阅读说明：本技术 一种多功能的椅 (Multifunctional chair ) 是由 吕伟郭 于 2020-12-15 设计创作，主要内容包括：本发明公开了一种多功能的椅,包括：第一架体单元；第一支撑单元,与第一架体单元的第一连接位置处相连,第一架体单元末端的高度低于其第一连接位置处的高度；第一抵靠单元,靠近第一连接位置处设置在第一架体单元上；第二架体单元,与第一架体单元的后部呈转动连接,该转动连接能使第二架体单元在用于躺椅或座椅的第一姿态以及用于健身器材的第二姿态之间运动；第二抵靠单元,设置在第二架体单元上。本发明提供的一种多功能的椅,功能多样,兼用于座椅、躺椅和健身器材,且结构简单、操作简单、快捷,使用方便,易于携带和运输。(The invention discloses a multifunctional chair, comprising: a first frame unit; the first support unit is connected with a first connecting position of the first frame body unit, and the height of the tail end of the first frame body unit is lower than that of the first connecting position; the first abutting unit is arranged on the first frame body unit close to the first connecting position; the second frame body unit is rotatably connected with the rear part of the first frame body unit, and the rotary connection can enable the second frame body unit to move between a first posture for a deck chair or a seat and a second posture for fitness equipment; the second leans on the unit, sets up on the second support body unit. The multifunctional chair provided by the invention has multiple functions, can be used as a seat, a deck chair and fitness equipment, and is simple in structure, simple and rapid to operate, convenient to use and easy to carry and transport.)

1. A multifunctional chair, comprising:

a first frame unit having a head end and a tail end;

the first support unit is used for supporting the first frame body unit, the first support unit is connected with a first connecting position of the first frame body unit, and the height of the tail end of the first frame body unit is lower than that of the first connecting position of the first frame body unit;

the first abutting unit is arranged on the first frame body unit and is close to a first connecting position;

the second frame body unit is arranged at the rear part of the first frame body unit and is in rotary connection with the first frame body unit, the rotary connection of the second frame body unit and the first frame body unit can move between a first posture for a deck chair or a seat chair and a second posture for fitness equipment, the second frame body unit and the first frame body unit are in the first posture when having an angle, and the second frame body unit and the tail end of the first frame body unit are in the second posture when being overlapped;

the second abutting unit is arranged on the second rack body unit;

the first support body unit comprises a first support body structure arranged in parallel and is used for mounting and supporting the first abutting unit;

the first frame body unit comprises a first frame body structure and a first transverse supporting structure which are arranged in parallel, the first transverse supporting structure is arranged on the first frame body structure at intervals, and the first frame body structure and the first transverse supporting structure are used for installing and supporting the first abutting unit;

the first frame body structure is arranged into an integral structure;

the first setting of support body structure is the components of a whole that can function independently structure, includes:

a first frame part;

the second frame part is pivotally connected with the first frame part, the angle formed between the first frame part and the second frame part is changed, and the first frame part and the second frame part are adjusted in an unfolding and folding state;

the second frame unit is connected with the first frame unit through a third rotating assembly and is used for adjusting the first posture and/or the second posture position of the second frame unit relative to the first frame unit and/or locking when the second frame unit is positioned at the first posture and/or the second posture;

the second posture is formed when the second frame unit moves along the tail end direction of the first frame unit through the rotation of the third rotating assembly and is overlapped with the tail end of the first frame unit;

the first posture is formed when the second frame unit moves to an angle with the first frame unit along any direction of the head end or the tail end of the first frame unit through the rotation of the third rotating assembly.

2. The multifunctional chair according to claim 1, wherein: the second support body unit comprises a second support body structure arranged in parallel and is used for mounting and supporting the second abutting unit;

the second frame body unit comprises a second frame body structure and a second transverse supporting structure which are arranged in parallel, the second transverse supporting structure is arranged on the second frame body structure at intervals, and the second frame body structure and the second transverse supporting structure are used for mounting and supporting the second abutting unit;

the third rotating assembly includes:

the ratchet wheel is provided with a ratchet wheel arm, and the ratchet wheel arm is connected with the second frame body structure and/or the second transverse supporting structure;

one end of the rotating arm is hinged with the ratchet wheel through a ratchet wheel shaft, and the other end of the rotating arm is connected with the first frame body structure and/or the first transverse supporting structure;

the non-return pawl is hinged with the rotating arm through a non-return pawl shaft and used for preventing the ratchet wheel from rotating;

the return piece is sleeved on the ratchet shaft and used for driving the return pawl to leave the ratchet;

the reset piece is used for resetting the check pawl;

the third rotating assembly includes:

the third connecting piece is connected with the second frame structure;

and one end of the rotating shaft III is connected with the frame body structure I, and the other end of the rotating shaft III is connected with the connecting piece III. (ii) a

The rack body unit is arranged below the first rack body unit, and the lower end of the first support unit is abutted against the first rack body unit and/or the second support unit;

the third supporting unit includes:

the upper end of the third support piece is rotatably connected with the second frame body structure;

and/or a third adjusting assembly for adjusting the position of the third supporting member relative to the first frame unit, the third adjusting assembly being provided on the first frame unit and/or the second supporting unit;

the third adjusting assembly comprises a third adjusting part, and a plurality of third adjusting channels are arranged on the third adjusting part and are used for supporting the lower end of the third supporting part;

the third adjusting channel is arranged in a groove-shaped structure with an open upper end and is used for abutting against the lower end of the third supporting piece;

the third supporting unit includes:

the upper end of the upper third supporting piece is rotatably connected with the second frame body structure;

the lower third supporting piece is connected with the upper third supporting piece, and the lower end of the lower third supporting piece is connected with the first rack body unit and/or the second supporting unit;

changing the relative length between the upper third supporting piece and the lower third supporting piece, and changing the height position between the second rack body unit and the installation end surface of the installation medium;

the upper third supporting piece and the lower third supporting piece are oppositely arranged into a telescopic structure;

the first connecting position is close to the head end of the first frame body unit and/or is overlapped with the head end of the first frame body unit.

3. The multifunctional chair according to any one of claims 1-2, wherein: the number of the first supporting units is at least one, and the first supporting units and the installation end surface are arranged at an angle;

the first support unit comprises at least two first support members which are arranged in parallel, the upper ends of the first support members are connected with the first connecting position of the first frame body unit, and the lower ends of the first support members are used for abutting against the mounting end face of the mounting medium;

the first support member is arranged into an integral structure;

the first support piece is arranged into a split structure and comprises:

a first support section;

the second supporting part is pivotally connected with the first supporting part, the angle formed between the first supporting part and the first supporting part of the second supporting part is changed, and the first supporting part and the second supporting part are used for adjusting the unfolding state and the folding state;

the first support piece is arranged into a split structure and comprises:

a first support section;

the second supporting part is arranged at the lower part of the first supporting part, the relative length between the first supporting part and the second supporting part is changed, and the height position between the first frame body unit and the installation end surface of the installation medium is changed;

the first supporting part and the second supporting part are oppositely arranged into a telescopic structure;

the first support unit is rotatably connected with the first frame body unit through a first rotating assembly;

the first rotating assembly includes:

the first connecting piece is connected with the first frame body structure;

one end of the first rotating shaft is connected with the first supporting piece, and the other end of the first rotating shaft is connected with the first connecting piece.

4. The multifunctional chair according to any one of claims 1-3, wherein: the multifunctional chair is characterized by further comprising a positioning unit arranged on the first supporting unit, and when the multifunctional chair is in the second posture, the positioning unit is used for placing and/or positioning feet or legs of a human body;

the positioning unit includes:

the positioning connecting pieces are arranged at intervals, and two ends of each positioning connecting piece are respectively connected with the first supporting piece;

the positioning adjusting piece is sleeved on the positioning connecting piece, and a positioning end face used for supporting the foot or the leg of the human body is formed at the outer end of the positioning adjusting piece;

the positioning adjusting piece is arranged into a flexible structure;

the first support unit is connected with the tail end of the first frame body unit and/or connected with the main body close to the tail end.

5. The multifunctional chair according to any one of claims 1-4, wherein: the second support unit is formed by the tail end of the first frame body unit and/or a main body of the first frame body unit close to the tail end;

the number of the second supporting units is at least one, and the second supporting units and the installation end surface are arranged at an angle;

the second support unit comprises at least two second support pieces which are arranged in parallel, the upper ends of the second support pieces are connected with the first frame body unit, and the lower ends of the second support pieces are used for abutting against the mounting end face for placing a medium;

the second support member is provided as an integral structure;

the second support piece is arranged into a split structure and comprises:

a third support portion;

the fourth supporting part is pivotally connected with the third supporting part, and changes an angle formed between the third supporting part and the fourth supporting part, and the third supporting part and the fourth supporting part are used for adjusting the unfolding state and the folding state;

the second support piece is arranged into a split structure and comprises:

a third support portion;

the fourth supporting part is arranged at the lower part of the third supporting part, the relative length between the third supporting part and the fourth supporting part is changed, and the height position between the first frame body unit and the installation end surface of the installation medium is changed;

the third supporting part and the fourth supporting part are oppositely arranged to be a telescopic structure.

6. The multifunctional chair according to any one of claims 1-5, wherein: the second support unit is rotatably connected with the first frame body unit through a second rotating assembly;

the second rotating assembly includes:

the second connecting piece is connected with the first frame structure and/or the second supporting piece;

one end of the rotating shaft II is connected with the frame body structure I, and the other end of the rotating shaft II is connected with the connecting piece II;

the second support unit further includes at least one second reinforcement member disposed between the second support members to reinforce the second support unit.

7. The multifunctional chair according to any one of claims 1-6, wherein: the first frame body unit is arranged at the front end of the first frame body unit and used for holding the first frame body unit;

the handrail structure is connected with the first frame body unit in a rotating mode.

8. The multifunctional chair according to any one of claims 1-7, wherein: the first abutting unit comprises a first abutting structure for the human body to sit or lie, and the first abutting structure is formed by extending from a position close to and/or a first connecting position along the direction close to the tail end of the first frame body unit;

the first abutting structure is connected with the first frame structure through the end part and/or the whole of the first abutting structure wrapping the first frame structure;

the first abutting structure is connected with the first frame body structure through a first connecting assembly, and the first connecting assembly is arranged into a buckling structure and/or a hook structure and/or a sticking structure;

the second leaning unit comprises a second leaning structure for the human body to sit or lie, and the second leaning structure is arranged on the second frame body unit and extends from one end close to the second frame body unit to the other end close to the first frame body unit;

the second abutting structure is connected with the second frame structure by wrapping the second frame structure by the end part and/or the whole of the second abutting structure.

9. The utility chair of claim 8, wherein: the second support structure is connected with the second frame body structure through a second connecting assembly, and the second connecting assembly is arranged into a buckling structure and/or a hook structure and/or a pasting structure.

10. The multifunctional chair according to any one of claims 1-9, wherein: the first and/or second abutment structure is/are provided as a cloth structure and/or a leather structure and/or a bamboo structure and/or a rattan structure and/or a plastic structure and/or a wood structure.

11. The multifunctional chair according to any one of claims 1-10, wherein: the first frame body structure is arranged to be an upper convex arc-shaped structure.

Technical Field

The invention relates to the field of articles for daily use, in particular to a multifunctional chair.

Background

The deck chair is a chair with a long backrest and a backward inclined backrest, people can lie on the deck chair to have a rest, and the deck chair becomes a leisure article commonly used in many places such as at home, in offices, in public places, outdoors and the like along with the improvement of living standard of people. Most of the existing deck chairs are composed of a chair seat and a chair back which is arranged in an inclined way with the chair seat, so that people can lie on the deck to have a rest, the daily requirements of the people are met, and the deck chair has a single function and does not have a body building function.

The patent of a utility model entitled folding type body-building deck chair (publication number: CN202858399U) is issued in 2013, 4 and 10.A publication comprises a backup plate, handrails, a seat plate, a foot-supporting plate bracket, an X-shaped chair bracket and a connecting frame, wherein the backup plate is connected with the seat plate in a binding manner, the foot-supporting plate is movably and telescopically connected with the seat plate, a multi-gear clamping groove plate is arranged in the clamping handrail, one end of the clamping groove plate extends out of the handrail to be hinged with the side surface of the backup plate, a movable support rod is arranged below the handrail to be hinged with the connecting frame, and the upper end of the movable support rod is provided with a clamping nail to; the rod pieces on the two upper end surfaces of the chair support are movably connected with the long slotted holes on the two sides of the connecting frame, and the foot plate support is hinged with the foot supporting plate; the device also comprises a pulley, a presser foot bent rod, a tension spring and a pulley support rod; the upper end of the pulley support rod is hinged with the middle part of the back of the backup plate, and the lower end of the pulley support rod is fixedly connected with the middle point of the connecting shaft of the pair of pulleys; the lower part of the back of the backup plate is provided with a tension spring connected with the lower end of the pulley support rod; two ends of the presser foot bent rod are movably connected with two outer side ends of the foot-supporting plate.

The foldable deck chair has the advantages that the foldable function and the body-building function are added on the basis of the traditional deck chair, the effect is more ideal when the deck chair is used, and the following defects still exist: (1) the chair has various components and complex structure, and the whole chair is heavy and inconvenient to use, package, carry and transport; (2) the front and back heights of the chair seat are consistent, when the chair is in a deck chair state, only the buttocks are relatively attached to the chair seat, and the comfort level is not high; the chair back and the chair seat can not be adjusted to the supporting amplitude required by the fitness state, so that the chair is inconvenient to use when used for fitness, and even has influence on the stretching action of the legs, the waist, the abdomen, the back, the shoulders, the neck and other parts; (3) when the deck chair is switched to a body-building state, the foot plate bracket and the X-shaped chair bracket are required to be folded one by one, and the presser foot bending rod is bent upwards, so that the operation is complex, and time and labor are wasted.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a multifunctional chair which has multiple functions, can be used as a seat, a deck chair and fitness equipment, and has the advantages of simple structure, simple and quick operation, convenient use and easy carrying and transportation.

In order to solve the technical problem, the invention is solved by the following technical scheme:

a multi-function chair comprising:

a first frame unit having a head end and a tail end;

the first support unit is used for supporting the first frame body unit, the first support unit is connected with a first connecting position of the first frame body unit, and the height of the tail end of the first frame body unit is lower than that of the first connecting position of the first frame body unit;

the first abutting unit is arranged on the first frame body unit and is close to a first connecting position;

the second frame body unit is arranged at the rear part of the first frame body unit and is in rotary connection with the first frame body unit, the rotary connection of the second frame body unit and the first frame body unit can move between a first posture for a deck chair or a seat chair and a second posture for fitness equipment, the second frame body unit and the first frame body unit are in the first posture when having an angle, and the second frame body unit and the tail end of the first frame body unit are in the second posture when being overlapped;

the second supports and leans on the unit, sets up on the second support body unit.

Preferably, the first frame unit comprises a first frame structure arranged in parallel, and is used for mounting and supporting the first abutting unit.

Preferably, the first frame unit comprises a first frame structure and a first transverse supporting structure which are arranged in parallel, the first transverse supporting structure is arranged on the first frame structure at intervals, and the first frame structure and the first transverse supporting structure are used for first installation and support of the abutting unit.

Preferably, the first frame structure is an integrated structure.

Preferably, the first frame structure is a split structure, and comprises:

a first frame part;

and the frame body part II is in pivoting connection with the frame body part I, changes an angle formed between the frame body part I and the frame body part II, and is used for adjusting the unfolding state and the folding state of the frame body part I and the frame body part II.

Preferably, the second frame unit is connected to the first frame unit via a third rotating assembly, and is used for adjusting the position of the first posture and/or the second posture of the second frame unit relative to the first frame unit, and/or locking the second frame unit in the first posture and/or the second posture.

Preferably, the second posture is formed when the second frame unit moves along the direction of the end of the first frame unit to overlap with the end of the first frame unit by the rotation of the third rotating assembly.

Preferably, the first posture is formed when the second frame unit moves to have an angle with the first frame unit in any one direction of the head end or the tail end of the first frame unit by the rotation of the third rotating assembly.

Preferably, the second frame unit comprises a second frame structure arranged in parallel, and the second frame structure is used for mounting and supporting the second leaning unit.

Preferably, the second support body unit comprises a second support body structure and a second transverse supporting structure which are arranged in parallel, the second transverse supporting structure is arranged on the second support body structure at intervals, and the second support body structure and the second transverse supporting structure are used for installation and support of the second support unit.

Preferably, the third rotating assembly includes:

the ratchet wheel is provided with a ratchet wheel arm, and the ratchet wheel arm is connected with the second frame body structure and/or the second transverse supporting structure;

one end of the rotating arm is hinged with the ratchet wheel through a ratchet wheel shaft, and the other end of the rotating arm is connected with the first frame body structure and/or the first transverse supporting structure;

the non-return pawl is hinged with the rotating arm through a non-return pawl shaft and used for preventing the ratchet wheel from rotating;

the return piece is sleeved on the ratchet shaft and used for driving the return pawl to leave the ratchet;

and the resetting piece is used for resetting the check pawl.

Preferably, the third rotating assembly includes:

the third connecting piece is connected with the second frame structure;

and one end of the rotating shaft III is connected with the frame body structure I, and the other end of the rotating shaft III is connected with the connecting piece III.

Preferably, the rack further comprises a third supporting unit for supporting the second rack unit, the third supporting unit is arranged below the second rack unit, and the lower end of the third supporting unit is abutted against the first rack unit and/or the second supporting unit.

Preferably, the third supporting unit includes:

the upper end of the third support piece is rotatably connected with the second frame body structure;

and/or a third adjusting assembly, which is used for adjusting the position of the third supporting piece relative to the first frame unit, and the third adjusting assembly is arranged on the first frame unit and/or the second supporting unit.

Preferably, the third adjusting assembly comprises a third adjusting part, and a plurality of third adjusting channels are arranged on the third adjusting part and used for supporting the lower end of the third supporting part.

Preferably, the third adjusting channel is provided in a groove-shaped structure with an open upper end for abutting against a lower end of the third support.

Preferably, the third supporting unit includes:

the upper end of the upper third supporting piece is rotatably connected with the second frame body structure;

the lower third supporting piece is connected with the upper third supporting piece, and the lower end of the lower third supporting piece is connected with the first rack body unit and/or the second supporting unit;

and the height position between the second frame body unit and the mounting end face of the mounting medium is changed by changing the relative length between the upper third support member and the lower third support member.

Preferably, the upper third supporting member and the lower third supporting member are arranged in a telescopic structure opposite to each other.

Preferably, the first connection position is arranged close to the head end of the first rack unit and/or is arranged in a manner of being overlapped with the head end of the first rack unit.

Preferably, the number of the first supporting units is at least one, and the first supporting units and the installation end face are arranged at an angle.

Preferably, the first support unit comprises at least two first support members arranged in parallel, the upper end of each first support member is connected with the first connection position of the first frame body unit, and the lower end of each first support member is used for abutting against the installation end face of the installation medium.

Preferably, the first support member is provided as a unitary structure.

Preferably, the first supporting member is provided as a split structure, including:

a first support section;

the second supporting part is connected with the first supporting part in a pivoting mode, the angle formed between the first supporting part and the first supporting part of the second supporting part is changed, and the first supporting part and the second supporting part are used for adjusting the unfolding state and the folding state.

Preferably, the first supporting member is provided as a split structure, including:

a first support section;

and the second supporting part is arranged at the lower part of the first supporting part, the relative length between the first supporting part and the second supporting part is changed, and the height position between the first frame body unit and the mounting end surface of the mounting medium is changed.

Preferably, the first supporting part and the second supporting part are arranged oppositely to form a telescopic structure.

Preferably, the first support unit is rotatably connected with the first frame unit through a first rotating assembly.

Preferably, the first rotating assembly includes:

the first connecting piece is connected with the first frame body structure;

one end of the first rotating shaft is connected with the first supporting piece, and the other end of the first rotating shaft is connected with the first connecting piece.

Preferably, the multifunctional chair further comprises a positioning unit arranged on the first supporting unit, and when the multifunctional chair is in the second posture, the positioning unit is used for placing and/or positioning feet or legs of a human body.

Preferably, the positioning unit includes:

the positioning connecting pieces are arranged at intervals, and two ends of each positioning connecting piece are respectively connected with the first supporting piece;

and/or the positioning adjusting piece is sleeved on the positioning connecting piece, and the outer end of the positioning adjusting piece is provided with a positioning end face used for supporting the foot or the leg of the human body.

Preferably, the positioning adjustment member is provided as a flexible structure.

Preferably, the rack further comprises a second support unit connected to the distal end of the first rack unit and/or the body near the distal end.

Preferably, the rack further comprises a second support unit, wherein the second support unit is formed by the tail end of the first rack unit and/or a main body of the first rack unit close to the tail end.

Preferably, the number of the second supporting units is at least one, and the second supporting units are arranged at an angle with the installation end face.

Preferably, the second support unit comprises at least two second support members arranged in parallel, the upper ends of the second support members are connected with the first frame body unit, and the lower ends of the second support members are used for abutting against the installation end face for placing the medium.

Preferably, the second support member is provided as a unitary structure.

Preferably, the second supporting member is provided as a separate structure, including:

a third support portion;

and the fourth supporting part is pivotally connected with the third supporting part, changes an angle formed between the third supporting part and the fourth supporting part, and is used for adjusting the unfolding state and the folding state.

Preferably, the second supporting member is provided as a separate structure, including:

a third support portion;

and the fourth supporting part is arranged at the lower part of the third supporting part, the relative length between the third supporting part and the fourth supporting part is changed, and the height position between the first frame body unit and the mounting end surface of the mounting medium is changed.

Preferably, the third supporting portion and the fourth supporting portion are arranged opposite to each other in a telescopic structure.

Preferably, the second supporting unit is rotatably connected with the first frame unit through a second rotating assembly.

Preferably, the second rotating assembly includes:

the second connecting piece is connected with the first frame structure and/or the second supporting piece;

and one end of the second rotating shaft is connected with the first frame structure, and the other end of the second rotating shaft is connected with the second connecting piece.

Preferably, the second support unit further comprises at least one second reinforcement member disposed between the second support members to reinforce the second support unit.

Preferably, the rack further comprises a handrail structure, and the handrail structure is arranged at the head end of the first rack unit.

Preferably, the handrail structure is rotatably connected with the first frame unit.

Preferably, the first abutting unit comprises a first abutting structure for the human body to sit or lie, and the first abutting structure is formed by extending from the position close to and/or the first connecting position along the direction close to the tail end of the first frame unit.

Preferably, the first abutment structure is connected to the first frame structure by wrapping the first frame structure partially and/or completely around the first frame structure.

Preferably, the first abutting structure is connected with the first frame body structure through a first connecting assembly, and the first connecting assembly is arranged into a buckling structure and/or a hook structure and/or a sticking structure.

Preferably, the second support unit comprises a second support structure for the human body to sit or lie, and the second support structure is arranged on the second frame unit and extends from one end close to the second frame unit to the other end close to the first frame unit.

Preferably, the second abutting structure is connected with the second frame structure by wrapping the second frame structure by the end part and/or the whole of the second abutting structure.

Preferably, the second abutting structure is connected with the second frame body structure through a second connecting assembly, and the second connecting assembly is arranged into a buckling structure and/or a hook structure and/or a sticking structure.

Preferably, the first and/or second abutment structure is provided as a cloth structure and/or a leather structure and/or a bamboo structure and/or a rattan structure and/or a plastic structure and/or a wood structure.

Preferably, the first frame structure is arranged in an upward convex arc structure.

The invention achieves the following beneficial effects:

(1) the multifunctional chair has two using postures, namely the first posture as a deck chair or a seat and the second posture as a fitness apparatus, by adjusting the angle relation between the second frame body unit and the first frame body unit, has two purposes, has the functions of the existing fitness apparatuses such as sit-up and push-up particularly when being adjusted to the second posture as the fitness apparatus, can randomly adjust the angle of the second frame body unit relative to the first frame body unit according to the requirement, can be selected or switched according to the requirement of the fitness or the deck chair or the seat, and is convenient to operate;

(2) according to the multifunctional chair, the supporting frame is composed of the first frame body unit and the second frame body unit, the first support body unit and the second support body unit are arranged on the first frame body unit and the second frame body unit, the second frame body unit is rotated relative to the first frame body unit, the angle between the first support body unit and the second support body unit is adjusted accordingly, the adjustment is convenient, the body building or the deck chair or the chair switching is completed by one key, the structure of the multifunctional chair is greatly simplified, the operation is simple and fast, and the installation and the disassembly are convenient;

(3) according to the multifunctional chair, the first frame body unit and the second frame body unit can be adjusted to be in an overlapped state, on one hand, the overall structure of the multifunctional chair can be reduced, and the multifunctional chair is convenient to package, carry and transport, on the other hand, when the first frame body unit and the second frame body unit are adjusted to be in the overlapped state, the multifunctional chair can be used as fitness equipment such as sit-up and push-up, relatively large stretching amplitude is provided for legs, waist, abdomen, back, shoulders, neck and the like, the second frame body unit cannot obstruct stretching action, various stretching actions can be freely carried out, and the first support unit and the second support unit can be folded relative to the first frame body unit, so that the overall structure of the multifunctional chair is further reduced, the multifunctional chair is convenient to package, carry and transport, and the cost is greatly reduced;

(4) according to the multifunctional chair, the first support unit is connected with the first connecting position of the first frame body unit, so that the height of the tail end of the first frame body unit is lower than that of the first connecting position, when the multifunctional chair is in the first posture of a deck chair or a seat, the hip, the leg and the like can be attached to the first abutting unit on the first frame body unit, the contact area of a human body and the first abutting unit is increased, stress points are dispersed, and the multifunctional chair is more comfortable and relaxed; when multi-functional chair is in body-building apparatus's second gesture, the coincide of second support body unit is at the rear portion of first support body unit to make the second support to lean on the unit, first support to lean on the unit and first support unit to form the required support range of body-building jointly, when having increased body-building demands such as being used for push-up, sit up promptly, to the tensile range of positions such as leg, waist, abdomen, back, shoulder, neck, replace current independent body-building apparatus completely.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is an overall structural schematic view of a multifunctional chair in a first posture according to a first embodiment of the invention.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a partial structural schematic view of the multifunctional chair in the first posture according to the first embodiment of the invention.

Fig. 4 is an overall structural schematic view of the multifunctional chair in the second posture according to the first embodiment of the invention.

Fig. 5 is an exploded view of fig. 4.

Fig. 6 is a partial structural schematic view of the multifunctional chair in the second posture according to the first embodiment of the invention.

Fig. 7 is an internal structure diagram of a third rotating assembly of the multifunctional chair according to the first embodiment of the invention.

Fig. 8 is a schematic structural view of a first rotating assembly of the multifunctional chair according to the first embodiment of the invention.

Fig. 9 is a schematic structural view of a first abutting unit and a first partial frame structure of the multifunctional chair according to the first embodiment of the invention.

Fig. 10 is a schematic structural view of a second abutting unit and a second partial frame structure of the multifunctional chair according to the first embodiment of the invention.

Fig. 11 is a partial structural schematic view of a multifunctional chair in a first posture according to a second embodiment of the invention.

Fig. 12 is a partial structural view of the multifunctional chair in the second posture according to the second embodiment of the invention.

Fig. 13 is an enlarged schematic view of a portion a in fig. 11.

Fig. 14 is a partial structural schematic view of a multifunctional chair in a third embodiment of the invention in a first posture.

Fig. 15 is a partial structural schematic view of the multifunctional chair in the third embodiment of the invention in the second posture.

Fig. 16 is a schematic structural view of a third rotating assembly of the multifunctional chair according to the third embodiment of the invention.

Fig. 17 is a partial structural view of a multifunctional chair in a first posture according to a fourth embodiment of the present invention.

Fig. 18 is a schematic structural view of a multifunctional chair in a folded state according to a fourth embodiment of the present invention.

Fig. 19 is a first structural schematic view of a first pivot structure of a multifunctional chair according to a fourth embodiment of the invention.

Fig. 20 is a partial structural view of the multifunctional chair in the first posture according to the fifth embodiment of the invention.

Fig. 21 is a schematic structural view of a fifth multifunctional chair according to the embodiment of the invention in a folded state.

Fig. 22 is a partial structural view of a multifunctional chair in a first posture according to a sixth embodiment of the invention.

Fig. 23 is a schematic structural view of a multifunctional chair according to a sixth embodiment of the present invention in a folded state.

Fig. 24 is a partial structural view of a multifunctional chair in a first posture in accordance with a seventh embodiment of the present invention.

Fig. 25 is a schematic structural view of a second rotating assembly of the multifunctional chair according to the seventh embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact, but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.

As shown in fig. 1 to 10, as a first embodiment of the present invention, a multifunctional chair is disclosed, which comprises a first frame unit 1, a second frame unit 2, a first supporting unit 3, and a first abutting unit 13 and a second abutting unit 23 respectively disposed on the first frame unit 1 and the second frame unit 2, wherein the first frame unit 1 is provided with a head end 101 and a tail end 102, the first supporting unit 3 is connected to a first connection position 103 of the first frame unit 1 for supporting the first frame unit 1, such that the height of the tail end 102 of the first frame unit 1 is lower than the height of the first connection position 103, the first abutting unit 13 is disposed near the first connection position 103 and is mainly used for contact and support of hips, legs, etc., the second frame unit 2 is disposed at the rear portion of the first frame unit 1 and is rotatably connected to the first frame unit 1, the rotational connection enables the multifunctional chair to move between a first posture as a deck chair or a seat and a second posture as a fitness device, and the second leaning unit 23 is arranged on the second frame body unit 2 and is mainly used for contacting and supporting parts such as waist, back, shoulders and the like. The multifunctional chair of the embodiment can obtain two using postures, namely a first posture as a deck chair or a seat and a second posture as a fitness device, by adjusting the angle relationship between the second frame body unit 2 and the first frame body unit 1, has two functions as a chair, particularly has the functions of the fitness device such as sit-up, push-up and the like when being adjusted to the second posture of the fitness device, and the angle of the second frame body unit 2 relative to the first frame body unit 1 can be optionally adjusted according to requirements, for example, the second frame body unit is used as a seat at 90 degrees, is used as a deck chair at 135 degrees, is used as a fitness device at 180 degrees, can be used for selecting or switching the requirements of the fitness device or the deck chair or the seat at any time, and is convenient to operate; the support frame of the multifunctional chair in the embodiment is composed of a first frame body unit 1 and a second frame body unit 2, a first abutting unit 13 and a second abutting unit 23 are arranged on the first frame body unit 1 and the second frame body unit 2, the second frame body unit 2 rotates relative to the first frame body unit 1, the angle between the first abutting unit 13 and the second abutting unit 23 is adjusted accordingly, the adjustment is convenient, the switching of the body-building chair or the deck chair or the chair is completed by one key, the structure of the multifunctional chair is greatly simplified, the operation is simple and rapid, and the installation or the disassembly is convenient; the first frame unit 1 and the second frame unit 2 in this embodiment can be adjusted to an overlapped state, on one hand, the overall structure of the multifunctional chair can be reduced, the packaging, carrying and transportation are convenient, and the cost is greatly reduced, on the other hand, when the first frame unit 1 and the second frame unit 2 are adjusted to the overlapped state, the first frame unit and the second frame unit can be used as fitness equipment such as sit-up, push-up and the like, and have relatively large stretching amplitude for legs, waist, abdomen, back, shoulders, necks and the like, and the second frame unit 2 can not obstruct the stretching action, and can freely perform various stretching actions; because the first support unit 3 in the embodiment is connected with the first connection position 103 of the first frame unit 1, the height of the tail end 102 of the first frame unit 1 is lower than the height of the first connection position 103, so that when the multifunctional chair is in the first posture of a deck chair or a seat, the hip, the leg and other parts can be attached to the first abutting unit 13 on the first frame unit 1, the contact area of the human body and the first abutting unit 13 is increased, the stress points are dispersed, and the multifunctional chair is more comfortable and relaxed; when the multifunctional chair is in the second posture of the fitness equipment, the second frame body unit 2 is overlapped at the rear part of the first frame body unit 1, so that the second abutting unit 23, the first abutting unit 13 and the first supporting unit 3 jointly form the supporting amplitude required by fitness, namely when the fitness requirements such as push-up, sit-up and the like are increased, the stretching amplitude of the legs, waist, abdomen, back, shoulders, neck and the like is completely replaced by the existing independent fitness equipment, of course, when the second frame body unit 2 is overlapped at the rear part of the first frame body unit 1, the angle between the second abutting unit 23 and the first abutting unit 13 can be equal to 180 degrees, namely the second frame body unit 2 is just overlapped with the rear part of the first frame body unit 1, or slightly more than or less than 180 degrees, namely the second frame body unit 2 is slightly inclined and overlapped at the rear part of the first frame body unit 1, can be used as body-building equipment for sit-ups, push-ups and the like. In addition, for clarity of illustration in this embodiment, the first posture for the reclining chair or the seat is that the second frame unit 2 has an angle with the first frame unit 1, and the second posture for the exercise apparatus is that the second frame unit 2 is overlapped with the end of the first frame unit 1, and in other embodiments, the second frame unit 2 may also be used as the exercise apparatus when the second frame unit 2 has an angle with the first frame unit 1, and the present invention is also within the protection scope of the present invention.

As shown in fig. 3, as a first embodiment of the present invention, the first frame unit 1 includes two frame structures 11 arranged in parallel, the frame structures 11 are arranged in a rod-like structure, the first abutting unit 13 is installed and supported between the two frame structures 11, so that the two frame structures 11 and the first abutting unit 13 together form a supporting end surface for supporting buttocks, legs and the like, greatly saving the section bar required by the first frame unit 1, saving the cost, reducing the overall weight of the multifunctional chair, facilitating the use and carrying, and the two frame body structures I11 are arranged in parallel, compared with the non-parallel arrangement, on one hand, the volume of the whole multifunctional chair is reduced, thereby be convenient for put, packing, carry and transport, on the other hand for the width between two support body structures 11 front, the rear end is unanimous, thereby is convenient in the installation or connect first unit 13 that leans on. Of course, in other embodiments, the frame structures one 11 may be arranged as one and arranged as a plate-like structure, or arranged as a combination of three, four, five or more rod-like structures and the first abutting unit 13, or arranged without the first abutting unit 13, or arranged as other frame structures, and the two frame structures one 11 may also be arranged in a non-parallel manner such as a splayed shape, an inverted splayed shape, or a crossed shape, which can also form a supporting end face together with the first abutting unit 13 for supporting buttocks, legs, etc. Of course, the first frame structure 11 in this embodiment is made of metal materials such as steel and iron, etc. to enhance the firmness of the structure, and in other embodiments, the first frame structure 11 may also be made of materials such as wood and plastic, etc. or other materials, or a combination of these materials, so as to make the multifunctional chair more versatile.

As shown in fig. 3, as a first embodiment of the present invention, the first frame unit 1 further includes two lateral support structures one 12 disposed at an interval between the two frame structures one 11, the lateral support structures one 12 is disposed in a rod-like structure, and the first abutting unit 13 is installed and supported above the two frame structures one 11 and the two lateral support structures one 12. In the embodiment, the stability and the bearing performance of the first frame body unit 1 and the first abutting unit 13 are improved by additionally arranging two transverse supporting structures one 12 arranged at intervals between the two frame body structures one 11, and the two transverse supporting structures I12 are arranged at intervals, so that the section bars needed by the first frame body unit 1 are greatly saved, the cost is saved, the whole weight of the multifunctional chair is reduced, the use and the transportation are convenient, and of course, in other embodiments, the first transverse supporting structure 12 can also be arranged into one and a plate-shaped structure, or be arranged into three, four, five or even more rod-shaped structures which are arranged at intervals or not, or other frame structures, the stability and the load-bearing performance of the first frame unit 1 can be improved, and in other embodiments, the transverse support structures 12 are not needed. Moreover, in this embodiment, the two first transverse supporting structures 12 are arranged in parallel, so that an unsupported space is formed between the two first transverse supporting structures 12, and when the hip, the leg and other parts are placed on the first abutting unit 13 arranged on the first frame unit 1, the first frame unit is more comfortable and relaxed. In addition, the first transverse supporting structure 12 in this embodiment is configured to be a concave arc structure, so as to further increase the attaching area of the first abutting unit 13 above the first transverse supporting structure 12 to the hips, the legs, and the like, and further improve the comfort of the hips, the legs, and the like, of course, in other embodiments, the first transverse supporting structure 12 may also be configured to be a convex arc structure to improve the stretching range of the legs, the waist, the abdomen, the back, the shoulders, the neck, and the like, or may be configured to be a straight structure and also be used for supporting the hips, the legs, and the like. Of course, the lateral support structure 12 in this embodiment is made of metal material such as steel, iron, etc. to enhance the firmness of the structure, and in other embodiments, the lateral support structure 12 may also be made of wood, plastic, etc. or other materials, or a combination of these materials, so as to make the multifunctional chair more versatile.

As shown in fig. 3, as a first embodiment of the present invention, the first frame structure 11 is an integrated structure, which enhances the stability of the first frame structure 11, and has a simple structure and is convenient for production and processing.

As shown in fig. 3, as a first embodiment of the present invention, the second frame unit 2 is connected to the first frame unit 1 through a third rotating assembly 8, and the third rotating assembly 8 is used for the second frame unit 2 to perform position adjustment and position locking for a first posture of the recliner or the seat and a second posture of the exercise apparatus with respect to the first frame unit 1. In this embodiment, through set up third rotating assembly 8 between second support body unit 2 and first support body unit 1 and can realize angle between second support body unit 2 and the first support body unit 1, the regulation and the locking of position, first support body unit 1 rotates second support body unit 2 relatively, first support leans on unit 13 and second to lean on the angle between unit 23 also to adjust thereupon, it is convenient to adjust, the switching of body-building or deck chair or seat is accomplished to the key, and the structure of multi-functional chair has been simplified greatly, the weight of multi-functional chair has been alleviateed, facilitate the use and the transport, and the installation is convenient with the dismantlement. Of course, in other embodiments, the third rotating assembly 8 may also be only used to adjust the angle and the position between the second frame unit 2 and the first frame unit 1, and cooperate with other locking structures to achieve the locking of the angle and the position between the second frame unit 2 and the first frame unit 1, or the third rotating assembly 8 may only be used to achieve the locking of the angle and the position between the second frame unit 2 and the first frame unit 1, cooperate with other adjusting structures to achieve the adjustment of the angle and the position between the second frame unit 2 and the first frame unit 1, and also may achieve the adjustment and the locking of the angle and the position between the second frame unit 2 and the first frame unit 1.

As shown in fig. 4, as a first embodiment of the present invention, a second posture for the exercise device is formed by the second frame unit 2 rotating relative to the first frame unit 1 through the third rotating assembly 8 and moving along the direction of the end 102 of the first frame unit 1 to overlap with the end 102, and at this time, the second abutting unit 23 also moves along with the second frame unit 2 to overlap with the end 102, so that the multifunctional chair is integrally formed into the structure of the exercise device such as sit-up and push-up, and can be used for the large-amplitude stretching action of the legs, waist, abdomen, back, shoulders, neck, and the like. In this embodiment, the third rotating assembly 8 is disposed at the middle position of the first frame unit 1, so that the second frame unit 2 can be overlapped with the end 102 after moving along the direction of the end 102 of the first frame unit 1, thereby ensuring that the second abutting unit 23 is maximally extended from the first abutting unit 13 to form a maximum supporting end surface, of course, in other embodiments, the third rotating assembly 8 may also be disposed at a distance forward from the middle position of the first frame unit 1, so that the second frame unit 2 is overlapped with a part of the structure of the first frame unit 1 near the end 102 after moving along the direction of the end 102 of the first frame unit 1 to form a slightly smaller supporting end surface, and also can be switched between the first posture for the reclining chair or the seat and the second posture for the fitness equipment. In this embodiment, the shape of the second frame unit 2 is matched with the shape of the end 102 of the first frame unit 1, so that the folding degree is higher, and no additional space is required, and of course, in other embodiments, the shapes of the second frame unit 2 and the end 102 of the first frame unit 1 may be different, so that they are only partially folded, and a second posture for the fitness equipment can also be formed.

As shown in fig. 1, as a first embodiment of the present invention, a first posture for a reclining chair or a seat is formed by the second frame unit 2 rotating relative to the first frame unit 1 through the third rotating assembly 8 and moving to have an angle with the first frame unit 1 along either direction of the end 102 or the head end 101 of the first frame unit 1, at this time, the second abutting unit 23 moves to have a certain angle with the end 102 of the first frame unit 1 along with the second frame unit 2, so that the multifunctional chair is a whole of a reclining chair or a seat structure, and the second frame unit 2 can be adjusted to a comfortable height according to requirements, and of course, the multifunctional chair can also be used for stretching exercise motions of legs, waist, abdomen, back, shoulders, neck and the like when in the first posture for the reclining chair or the seat.

As shown in fig. 3, as a first embodiment of the present invention, the second frame unit 2 includes two frame structures 21 arranged in parallel, the frame structures 21 are arranged in a rod-like structure, and the second abutting unit 23 is installed and supported between the two frame structures 21, so that the two frame structures 21 and the second abutting unit 23 together form a supporting end face mainly used for supporting the back, the waist, and the like, thereby greatly saving the section required by the second frame unit 2, saving the cost, reducing the overall weight of the multifunctional chair, facilitating the use and the carrying, and the two second frame structures 21 are arranged in parallel, compared with the non-parallel arrangement, on one hand, the volume of the multifunctional chair is reduced, thereby be convenient for put, packing, carry and transport, on the other hand for the width between the upper and lower end of two support body structures two 21 is unanimous, thereby is convenient in the installation or connect the second and leans on unit 23. Of course, in other embodiments, the two frame structures 21 may be arranged as one and arranged as a plate-like structure, or arranged as a combination of three, four, five or more rod-like structures and the second abutting unit 23, or without the second abutting unit 23, or arranged as other frame structures, and the two frame structures 21 may also be arranged in a non-parallel manner, such as in a splayed shape, an inverted splayed shape, or a crossed shape, which can also form a supporting end face together with the second abutting unit for supporting the back, waist, and the like. Certainly, the second frame structure 21 in this embodiment is made of metal materials such as steel and iron, which enhances the firmness of the structure, and in other embodiments, the second frame structure 21 may also be made of materials such as wood and plastic, or other materials, or a combination of these materials, which makes the multifunctional chair more versatile.

As shown in fig. 2, as a first embodiment of the present invention, the second frame unit 2 further includes two second lateral support structures 22 spaced between the two second frame structures 21, the second lateral support structures 22 are configured as rod-shaped structures, and the second abutting unit 23 is installed and supported in front of the two second frame structures 21 and the two second lateral support structures 22. In the embodiment, the two transverse support structures two 22 arranged at intervals are additionally arranged between the two frame structures two 21, so that the stability and the bearing performance of the second frame unit 2 and the second abutting unit 23 are improved, and the two transverse supporting structures two 22 are arranged at intervals, so that profiles required by the second frame body unit 2 are greatly saved, the cost is saved, and the overall weight of the multifunctional chair is reduced, thereby being beneficial to use, package, carrying and transportation, of course, in other embodiments, the second lateral support structure 22 can also be arranged as one and as a plate-like structure, or as three, four, five or even more spaced or non-spaced rod-like structures, or in other frame structures, to improve the stability and load-bearing properties of the second frame unit 2, and in other embodiments the second lateral support structure 22 may not be provided. Moreover, in this embodiment, the two transverse supporting structures two 22 are arranged in parallel, so that an unsupported space is formed between the two transverse supporting structures two 22, and when the back, the waist and other parts are placed on the second abutting unit 23 arranged on the second frame unit 2, the second frame unit is more comfortable and relaxed, and of course, in other embodiments, the two transverse supporting structures two 22 may also be arranged in a non-parallel manner such as a splayed manner, an inverted splayed manner, or arranged in a cross manner, so that the stability and the bearing performance of the second frame unit 2 can also be improved. In addition, the second lateral support structure 22 in this embodiment is configured to be a concave arc structure, so that the attaching area of the second abutting unit 23 in front of the second lateral support structure 22 to the back and the waist is further increased, and the comfort of the back and the waist is further improved, of course, in other embodiments, the second lateral support structure 22 may also be configured to be a convex arc structure in front so as to improve the stretching range of the legs, the waist, the abdomen, the back, the shoulders, the neck, or configured to be a straight structure and also be used for supporting the back and the waist. Of course, the second lateral support structure 21 in this embodiment is made of metal materials such as steel and iron, etc. to enhance the firmness of the structure, and in other embodiments, the second lateral support structure 21 may also be made of materials such as wood and plastic, etc. or other materials, or a combination of these materials, so as to make the multifunctional chair more versatile.

As shown in fig. 7, as a first embodiment of the present invention, the third rotating assembly 8 includes a ratchet 812 with a ratchet arm 811, a ratchet shaft 813, a rotating arm 814, a non-return pawl 815, a non-return pawl shaft 816, a return member 817, and a return member 818, wherein the ratchet arm 811 is connected to the second frame structure 21, one end of the rotating arm 814 is hinged to the ratchet 812 through the ratchet shaft 813, the other end is connected to the first frame structure 11, the non-return pawl 815 is hinged to the rotating arm 814 through the non-return shaft 816 and is disposed corresponding to the ratchet 812 for preventing the ratchet 812 from rotating, the return member 817 is disposed on the ratchet shaft 813, one end of the return member 817 is provided with an arc-shaped notch structure 8171, the ratchet 812 is provided with an arc-shaped protrusion structure 8121 corresponding to the arc-shaped notch structure 8171, the other end of the return member 817 is provided with a protrusion structure 8172 corresponding to the non-return pawl 815, the protrusion, the return element 818 is a return spring selected to urge the check pawl 815 against the ratchet 812 after the check pawl 815 leaves the ratchet 812. In this embodiment, when the second frame structure 21 rotates toward the head end 101, the ratchet 812 also rotates counterclockwise, and meanwhile, the non-return pawls 815 pass through the tooth backs of the ratchet 812 one by one, and after the second frame structure 21 is adjusted to a required angle, the non-return pawls 815 return to abut against a certain tooth groove of the ratchet 812 under the elastic force of the reset piece 818, so as to lock the ratchet 812, that is, lock between the second frame structure 21 and the first frame structure 11; when the second frame structure 21 needs to be rotated toward the tail end 102, the second frame structure 21 is rotated toward the head end 101 to enable the front side of the arc-shaped protrusion structure 8121 on the ratchet 812 to abut against the front side of the arc-shaped notch structure 8171 on the return member 817, the second frame structure 21 is continuously rotated to enable the arc-shaped protrusion structure 8121 to push the arc-shaped notch structure 8171 to rotate around the counterclockwise direction until the protrusion structure 8172 pushes the pawl 835 away from the ratchet 812, then the second frame structure 21 is rotated toward the tail end 102, when the rear side of the arc-shaped protrusion structure 8121 abuts against the rear side of the arc-shaped notch structure 8171 on the return member 817, the second frame structure 21 is continuously rotated to enable the arc-shaped protrusion structure 8121 to push the arc-shaped notch structure 8171 to rotate around the clockwise direction until the protrusion structure 8172 leaves the non-return pawl 815, and the non-return pawl 815 returns to abut against a certain tooth groove of the ratchet 812 under the elastic, thereby achieving locking of the ratchet 812, i.e., locking between the second frame structure 21 and the first frame structure 11. The third rotating assembly 8 of this embodiment is simple in structure and easy to operate, and can enable the second frame structure 21 connected to the ratchet arm 811 to rotate and lock between the head end 101 and the tail end 102 of the first frame structure 11 connected to the rotating arm 834, of course, in other embodiments, the third rotating assembly 8 can be provided with other ratchet structures or hinge structures that can enable the second frame structure 21 to rotate and lock between the head end 101 and the tail end 102 of the first frame structure 11, and can also enable the second frame structure 21 to rotate and lock between the head end 101 and the tail end 102 of the first frame structure 11. In addition, the third rotating assemblies 8 in this embodiment are provided with two third rotating assemblies, and are respectively welded between the frame body structure two 21 and the frame body structure one 11 on the same side, so that adjustability and stability during adjustment are improved, of course, in other embodiments, only one third rotating assembly 8 may be provided, the welding manner may be replaced by other connection manners such as threaded connection, riveting connection, and snap connection, and the third rotating assembly 8 may also be provided between any one or two of the frame body structure two 21 and the transverse support structure two 22 and any one or two of the frame body structure one 11 and the transverse support structure one 12, so that the rotational connection and locking between the second frame body unit 2 and the first frame body unit 1 can also be realized.

As shown in fig. 3, as the first embodiment of the present invention, the first connection position 103 is disposed near the head end 101 of the frame structure one 11, that is, the first supporting unit 3 is supported near the head end 101 of the frame structure one 11, so as to reduce the height of the multifunctional chair as a whole and improve the stability of the multifunctional chair as a whole, and a distance is left between the head end 101 of the frame structure one 11 and the first connection position 103, on one hand, the stability of the connection of the first supporting unit 3 and the frame structure one 11 is improved and the risk of falling off connection is reduced, on the other hand, the part of the structure of the head end 101 of the frame structure one 11 can be used as an armrest to assist the human body to perform various body-building actions such as sit-up and push-up, especially when the multifunctional chair is in the second posture of the body-building apparatus, and furthermore, the first abutting unit 13 is disposed on the frame structure one 11 near the first connection position 103 along the direction of the tail end 102, the supporting end face for propping open between the first propping unit 13 and the second propping unit 23 is larger, the contact area with a larger area is larger than that of the human body, the acting points are more dispersed, and therefore the comfort is improved. Of course, in other embodiments, this first connection position 103 also can set up with the coincidence of the head end 101 of a support body structure 11, the holistic height of multi-functional chair has further been reduced, the holistic stability of multi-functional chair has been improved, and hide head end 101 of a support body structure 11 in first supporting unit 3, make the holistic succinct of multi-functional chair, use more unimpededly, or set up this first connection position 103 and the head end 101 coincidence of a support body structure 11 while being close to the position that head end 101 was gone up to support body structure 11 and set up another first connection position 103, thereby on succinct, unimpeded basis, improve the stability that first supporting unit 3 and support body structure 11 are connected, reduce the risk of coming off and connecting. In this embodiment, the first connection position 103 is disposed on the first frame structure 11 to enhance the stability and the load-bearing performance of the multifunctional chair, and of course, in other embodiments, the first connection position 103 may also be disposed on the first transverse support structure 12, or on the first frame structure 11 and the first transverse support structure 12, so that the first support unit 3 is connected to the first transverse support structure 12, or connected to both the first frame structure 11 and the first transverse support structure 12, and the first support unit 3 can support the head end 101 or the position near the head end 101 of the first frame unit 1, so that the height of the tail end 102 of the first frame unit 1 is lower than the height of the first connection position 103.

As shown in fig. 1, as a first embodiment of the present invention, the first supporting unit 3 is provided with one, which is simple in structure and is beneficial for use, carrying and transportation, and of course, in other embodiments, the first supporting unit 3 may also be provided with two, three or more, so as to enhance the support of the first frame unit 1 and improve the stability and the load-bearing performance of the multifunctional chair. In addition, first support unit 3 is the angle setting with the installation terminal surfaces such as floor, ground mat, gravel and sand and various indoor or outdoor platform surfaces, promptly, first support unit 3 inclines to these installation terminal surfaces and sets up, in this embodiment, the upper end of first support unit 3 inclines backward and sets up, makes the whole structure that closes gradually from the bottom up that forms of multi-functional chair, and each part of multi-functional chair can become inseparabler when first support body unit 1 atress, and the structure is more stable and firm. Of course, in other embodiments, the upper end of the first supporting unit 3 may also be disposed forward, so that the multifunctional chair is integrally formed into a structure gradually folded from top to bottom, so that the feet, the lower legs, and the like can move without hindrance, or the first supporting unit 3 is disposed perpendicular to the installation end surfaces, and can also form a stable triangular supporting structure with the first frame unit 1 and the installation end surfaces such as the ground, and the multifunctional chair can be stably placed and used.

As shown in fig. 3, as a first embodiment of the present invention, the first supporting unit 3 includes two first supporting members 31 arranged in parallel, the first supporting members 31 are arranged in a rod-like structure, the upper ends of the two first supporting members 31 are respectively connected to the first connecting positions 103 on the frame structure one 11 on the same side, and the lower ends are used for abutting against the mounting end surfaces of mounting media such as floors, floor mats, sand stones, and various indoor or outdoor platforms, so as to greatly save the section bars required by the first supporting members 31, save the cost, reduce the overall weight of the multifunctional chair, facilitate the use and the transportation, and the two first supporting members 31 are arranged in parallel, compared with the splayed arrangement, on one hand, the volume of the multifunctional chair is reduced, thereby facilitating the placement, packaging, carrying and transportation, on the other hand, the two first supporting members 31 are respectively on the same plane with the frame structure one 11 on the same side, and forward supporting force is exerted backward on the frame body structures 11 on the same side respectively, so that the supporting stability is improved. Of course, in other embodiments, the first supporting members 31 may be arranged in a plate-like structure and connected to the first connecting positions 103 on the two frame structures 11, or arranged in three, four, five or more rod-like structures, such that one frame structure 11 is connected to a plurality of first supporting members 31, respectively, and the two first supporting members 31 may be arranged in a non-parallel manner, such as a splay or an inverted splay, or arranged in a cross manner, such that the two first supporting members 31 are connected to the opposite frame structure 11, respectively, which also enables the first supporting units 3 to support the first connecting positions 103 on the first frame unit 1. Of course, the first supporting member 31 in this embodiment is made of metal material such as steel, iron, etc., in other embodiments, the first supporting member 31 may also be made of material such as wood, plastic, etc., or other materials, or a combination of these materials, so as to make the multifunctional chair more versatile.

As shown in fig. 3, as a first embodiment of the present invention, the first supporting member 31 is provided as an integral structure, which enhances the stability of the first supporting unit 3, and has a simple structure, and is convenient for production and processing.

As shown in fig. 3, as a first embodiment of the present invention, the first supporting unit 3 is rotatably connected to the first frame unit 1 via the first rotating assembly 6, so that the first supporting unit 3 can rotate relative to the first frame unit 1, on one hand, the angle between the first supporting unit 3 and the first frame unit 1 and the height of the multifunctional chair as a whole can be changed by adjusting the relative angle between the first supporting unit 3 and the first frame unit 1, and further the supporting direction of the first supporting unit 3 to the first frame unit 1 is changed to form different supporting structures, and at the same time, the positioning unit 9 moves accordingly, so that the angle when the multifunctional chair is used as a foot pad or a presser foot is different, so that the multifunctional chair has richer using states, on the other hand, after the first supporting unit 3 is rotated to abut against the first frame unit 1, the first supporting unit 3 can be folded, so that the overall size of the multifunctional chair is reduced, and the multifunctional chair is convenient to store, package, carry and transport. In this embodiment, two first rotating assemblies 6 are provided, the first supporting members 31 on the same side are connected with the first frame structure 11 through one first rotating assembly 6, so that the two first supporting members 31 rotate relative to the first frame structure 11 on the same side, thereby being capable of combining into more diversified use states, and the two first supporting members 31 can be folded, further reducing the overall size of the multifunctional chair, facilitating storage, packaging, carrying and transportation, of course, in other embodiments, the first rotating assembly 6 can also be only provided with one, so that one first supporting member 31 can rotate and fold relative to the first frame structure 11 on the same side, and also enabling the multifunctional chair to have more abundant use states and reduce the overall size of the multifunctional chair.

As shown in fig. 8, as a first embodiment of the present invention, the first rotating assembly 6 includes a first connecting member 61, a first rotating shaft 62 and a first limiting member 63, wherein one end of the first connecting member 61 is connected to the first connecting position 103 on the first frame structure 11, the other end is hinged to the first supporting member 31 through the first rotating shaft 62, so that the first supporting member 31 can rotate relative to the first connecting position 103 on the first frame structure 11, the first rotating shaft 62 is disposed perpendicular to the first frame structure 11, and the first limiting member 63 is disposed at the front portion of the first connecting member 61, so that the rotating tracks of the two first supporting members 31 are limited in the parallel direction of the first frame structure 11, thereby preventing the instability of the multifunctional chair as a whole due to the inconsistency of the rotating angles and directions of the two first supporting members 31. In this embodiment, when the first support unit 3 is rotated forward relative to the first frame unit 1 until the front end of the first support member 31 abuts against the first limit member 63, that is, the first support unit 3 is unfolded under the driving of the first support member 31, at this time, the multifunctional chair can be stably placed on the installation end surfaces such as the ground for use, when the first support unit 3 is rotated backward relative to the first frame unit 1 until the first support unit abuts against the first frame unit 1, that is, the first support unit 3 is folded and retracted under the driving of the first support member 31, at this time, the overall volume of the multifunctional chair is reduced, which is convenient for storage, packaging, carrying or transportation, and of course, in other embodiments, a locking member can be further provided to lock the first support member 31 at any angle relative to the first connection member 61, so as to integrally fix the first support member 31 and the first frame unit 1 at different angles and positions, the multifunctional chair is used for the foot pads or the presser feet with different angles and positions, so that the multifunctional chair has richer use states. In other embodiments, the first rotating assembly 6 may also be configured as other connecting structures such as a hinge, which can rotate the first supporting member 31 relative to the first frame structure 11, and can also switch the first frame unit 1 between the unfolded state and the folded state, so as to facilitate use, storage, packaging, carrying or transportation.

As shown in fig. 5, as a first embodiment of the present invention, the multifunctional chair further includes a positioning unit 9 disposed on the first support unit 3, and when the multifunctional chair is in the first state of the reclining chair or the seat, the multifunctional chair can be used for placing feet, lower legs, etc. to improve the comfort level when sitting or lying, and when the multifunctional chair is in the second posture of the exercise machine, the multifunctional chair can also be used for placing or positioning the feet, lower legs, etc. or simultaneously used for placing and positioning the feet, lower legs, etc. to assist various stretching movements of legs, waist, abdomen, back, shoulders, neck, etc., thereby completely replacing the existing independent exercise machine.

As shown in fig. 5, as a first embodiment of the present invention, the positioning unit 9 includes two positioning connectors 91 and two positioning adjusting members 92, wherein the positioning connectors 91 are disposed in a rod-like structure, the two positioning connectors 91 are disposed at intervals, and two ends of the two positioning connectors 91 are respectively connected to the two first supporting members 31, on one hand, the two positioning connectors 91 and the two first supporting members 31 together form a leaning end surface for placing or positioning the feet, the legs, and the like, thereby greatly saving the required section bar of the positioning unit 9, saving the cost, reducing the overall weight of the multifunctional chair, facilitating the use and the transportation, and the two positioning connectors 91 are disposed at intervals, so that the feet, the legs, and the like can be placed between the two positioning connectors 91, thereby realizing the spacing and the supporting of the front and rear two contact surfaces, and improving the positioning stability, on the other hand, the two positioning links 91 are connected between the two first supports 31, and also enhance the stability of the first support unit 3. The two first supporting members 31 are respectively sleeved with a positioning adjusting member 92, and the outer ends of the positioning adjusting members 92 are provided with positioning end faces for abutting against the feet, the shanks and the like, so that the contact areas of the two positioning connecting members 91 with the feet, the shanks and the like are increased, and the comfort level is improved. In this embodiment, the two positioning connectors 91 are provided, and are respectively sleeved with the positioning adjusting members 92, so that the feet, the shanks and the like and the positioning unit 9 have two placing or positioning end surfaces, thereby improving the comfort and the positioning stability, of course, in other embodiments, the positioning connectors 91 may also be provided with only one, or three, four, five or even more, the positioning adjusting members 92 may also be sleeved on only one of the positioning connectors 91, or various combinations may be performed on some of the positioning connectors 91, or no positioning adjusting members 92 are provided, which can also realize the placing or positioning of the feet, the shanks and the like. In addition, the positioning connecting piece 91 and the first supporting piece 31 can adopt fixed connecting structures such as welding, riveting and the like to enhance the stability of the structure, or can adopt detachable connecting structures such as a thread structure, a screw, a pin and the like to enable the multifunctional chair to be switched between a positioning unit and a non-positioning unit, thereby enabling the multifunctional chair to be more diversified, or can adopt a rotatable connecting structure to enable the positioning connecting piece 91 to rotate relative to the first supporting piece 31 to have massage effects on the feet, the legs and other parts, thereby enriching the functionality of the multifunctional chair, similarly, the positioning adjusting piece 92 and the positioning connecting piece 91 can adopt fixed connecting structures such as welding, gluing and the like to enhance the stability of the structure, or can adopt detachable connecting structures such as clamping connection, threaded connection, interference connection and the like to enable the multifunctional chair to be switched between the positioning adjusting piece and the non-positioning adjusting piece, thereby make multi-functional chair more diversified, perhaps adopt rotatable coupling structure, make location regulating part 92 can rotate relative positioning connection piece 91, promote the massage effect to positions such as foot, shank to the functional of multi-functional chair is abundanter. Of course, the positioning connection member 91 in this embodiment is made of metal materials such as steel and iron, etc. to enhance the firmness of the structure, and in other embodiments, the positioning connection member 91 may also be made of materials such as wood and plastic, etc. or other materials, or a combination of these materials, so as to make the multifunctional chair more versatile.

As shown in fig. 5, as a first embodiment of the present invention, the positioning adjustment member 92 is configured to be a flexible structure such as a sponge, a foam, or a soft silica gel structure, so as to further improve the comfort of the foot, the lower leg, or other parts placed or positioned on the positioning adjustment member 92.

As shown in fig. 2, as a first embodiment of the present invention, the multifunctional chair further comprises a second support unit 4, for supporting the rear portion of the first frame unit 1 and maintaining the balance of the whole multifunctional chair, in the present embodiment, the second support unit 4 is formed of the end 102 of the first magazine unit 1, simplifying the structure, facilitating the manufacture and processing, although, in other embodiments, the second supporting unit 4 may be formed by the body of the first frame unit 1 adjacent to the end 102 and the end 102, i.e. a larger portion of the first housing unit 1, or only the body of the first housing unit 1 near the distal end 102, or the second support unit 4 is separately provided and connected to the end 102 of the first frame unit 1 or a position near the end 102, so that the rear portion of the first frame unit 1 can be supported, and the balance of the whole multifunctional chair can be maintained.

As shown in fig. 4, as the first embodiment of the present invention, the second supporting unit 4 is provided with one, which is simple in structure and is beneficial for use, packaging, carrying and transportation, and of course, in other embodiments, the second supporting unit 4 may also be provided with two, three or more, so as to enhance the support of the rear portion of the first frame unit 1 and improve the stability and the load-bearing performance of the multifunctional chair. In addition, second support unit 4 is with the floor, the ground mat, the installation terminal surfaces such as gravel and sand and various indoor or outdoor platform surfaces are angular setting, namely, second support unit 4 inclines to these installation terminal surfaces and sets up, in this embodiment, the upper end of second support unit 4 inclines forward and sets up, make the whole structure that closes gradually from the bottom up that forms of multi-functional chair, each part of multi-functional chair can become inseparabler when first support body unit 1 atress, the structure is more stable and firm, and the angle that inclines forward of the upper end of second support unit 4 makes it form the extension shape of first support body unit 1, thereby simple structure, easily production and processing, and can form stable triangle-shaped supporting structure with installation terminal surfaces such as first support body unit 1, first support unit 3 and ground, realize stable putting and use of multi-functional chair. Of course, in other embodiments, the upper end of the second supporting unit 4 may also be inclined backward, so that the multifunctional chair is gradually folded from top to bottom, and the end 102 of the first frame unit 1 has a certain height with the installation end surface such as the ground, so that the multifunctional chair can move under the end 102 of the first frame unit 1 without hindrance, or the second supporting unit 4 is vertically arranged with the installation end surface such as the ground, and can also support the front end and the rear end of the first frame unit 1 together with the first supporting unit 3, thereby achieving stable placement and use of the multifunctional chair.

As shown in fig. 5, as a first embodiment of the present invention, the second supporting unit 4 includes two second supporting members 41 arranged in parallel, the second supporting members 41 are arranged in a rod-like structure, the two second supporting members 41 are respectively formed by frame structures 11 on the same side, the lower ends of the two second supporting members 41 are used for abutting against the mounting end surfaces of mounting media such as floors, floor mats, sand stones, indoor or outdoor various platforms, etc., so as to greatly save the sectional materials required by the second supporting unit 4, save the cost, reduce the overall weight of the multifunctional chair, facilitate the use and the transportation, and the two second supporting members 41 are arranged in parallel, compared with the splayed arrangement, on one hand, the overall volume of the multifunctional chair is reduced, thereby facilitating the placement, packaging, carrying and transportation, on the other hand, the two second supporting members 41 are respectively located on the same plane with the frame structures 11 on the same side, and forward positive supporting force is applied to the frame body structures 11 on the same side respectively, so that the supporting stability is improved. Of course, in other embodiments, the second supporting members 41 may be arranged in a plate-like structure and connected to two frame structures 11, or three, four, five or more rod-like structures, such that one frame structure 11 is connected to a plurality of second supporting members 41, and the two second supporting members 41 may be arranged in a non-parallel manner, such as a splay or an inverted splay, or arranged in a cross manner, such that two second supporting members 41 are connected to the opposite frame structures 11, which also enables the second supporting unit 4 to support the rear portion of the first frame unit 1. Of course, the second supporting member 41 in this embodiment is made of metal material such as steel, iron, etc. to enhance the firmness of the structure, in other embodiments, the second supporting member 41 may also be made of material such as wood, plastic, etc. or other materials, or a combination of these materials, so as to make the multifunctional chair more versatile.

As shown in fig. 5, as a first embodiment of the present invention, the second supporting member 41 is provided as an integral structure, which enhances the stability of the second supporting unit 4, and has a simple structure, and is convenient for production and processing.

As shown in fig. 5, as a first embodiment of the present invention, the second supporting unit 4 further includes a second reinforcing member 42 disposed between the two second supporting members 41 for reinforcing the structural stability and the load-bearing performance of the second supporting unit 4, and the second reinforcing member 42 is disposed in a rod-like structure, which greatly saves the section material required for the second reinforcing member 42, saves the cost, reduces the overall weight of the multifunctional chair, and is convenient for use and transportation. Of course, in other embodiments, the second reinforcing member 42 may also be provided in two, three or more to further enhance the stability of the second supporting unit 4, and the rod structure may also be replaced with a plate structure or other structures, so as to achieve the effect of enhancing the stability and the load-bearing performance of the structure of the second supporting unit 4. In addition, the second reinforcing member 42 in this embodiment is disposed between the ends of the two second supporting members 41, so as to increase the contact area between the second supporting unit 4 and the installation end surface such as the ground, and improve the stability of the chair when being placed. Of course, the second reinforcement 41 in this embodiment can be made of metal material such as steel, iron, etc. to enhance the firmness of the structure, and in other embodiments, the second reinforcement 41 can also be made of material such as wood, plastic, etc. or other materials, or a combination of these materials, so as to make the multifunctional chair more versatile.

As shown in fig. 2, as a first embodiment of the present invention, the multifunctional chair further includes an armrest structure 14, the armrest structure 14 is sleeved outside the head end 101 of the frame structure one 11, so as to increase the contact area when the head end 101 of the frame structure one 11 is held by a hand, thereby improving the comfort level of use, and being particularly beneficial to the multifunctional chair in the second posture of the exercise apparatus for assisting a human body to perform various exercise actions such as sit-up and push-up. In this embodiment, the armrest structure 14 is disposed outside the head end 101 of the frame structure one 11, which is beneficial for installation, detachment and use, and is convenient for production and processing, and has an anti-collision effect on the position of the head end 101, of course, in other embodiments, the armrest structure 14 may be disposed at other positions on the frame structure one 11, or disposed on any one of the lateral support structure one 12, the first abutting unit 13, the first rotating assembly 6, the first support member 31, the positioning connection member 91, the positioning adjustment member 92, the frame structure two 21, the lateral support structure two 22 or the second abutting unit 23, or on a combination of any several of them, and can also achieve an effect of assisting the human body to perform various body-building actions such as sit-up and push-up. In addition, in this embodiment, the handrail structure 14 adopts a flexible structure such as a sponge, a foam or a soft silica gel structure, so as to improve the comfort level of holding, but in other embodiments, the handrail structure 14 may also adopt a rigid structure such as a steel body, an iron body or a wood body, so as to appropriately improve the comfort level of use.

As shown in fig. 2, as a first embodiment of the present invention, the handrail structure 14 is rotatably connected to the head end 101 of the frame structure one 11, and can rotate relative to the frame structure one 11 after holding the handrail structure 14, so as to facilitate various body-building actions of a human body, such as twisting hands and wrists, and improve the body-building effect. Of course, in other embodiments, the handle structure 14 may also be connected to the head end 101 of the first frame structure 11 through a fixed connection structure such as welding or gluing, so as to enhance the connection stability, or connected through a detachable connection structure such as a thread, a screw, a snap, an interference, etc., so as to conveniently replace different types of handle structures 14.

As shown in fig. 9, as a first embodiment of the present invention, the first abutting unit 13 includes a first abutting structure 131, the first abutting structure 131 is mainly used for contacting and supporting the buttocks, the legs, etc. when the human body is sitting or lying, the first abutting structure 131 is disposed on the frame structure one 11, the first abutting structure 131 is formed by extending from the rear end near the first connecting position 103 along the direction approaching the end 102 of the first frame unit 1, on one hand, the front end of the first abutting structure 131 is disposed near the first connecting position 103 supported by the first supporting member 31, so that the first abutting structure 131 is located between the first connecting position 103 on the frame structure one 11 with a large area and the first rotating member 6, the first abutting structure 131 is ensured to have a large enough contact end surface, and is not crossed with the first connecting position 103 or the first rotating member 6, so as to facilitate installation and detachment, on the other hand, a placing space is left between the front end of the first abutting structure 131 and the positioning unit 4, and can be used for placing and positioning feet, calves and the like, a placing space is left between the front end of the first abutting structure 131 and the free end of the armrest structure 14, and can be used for placing feet, calves and the like, and the feet, the calves and the like can be blocked in the placing space through the armrest structure 14, so that the positioning of the feet, the calves and the like is further realized, and the collision of the outside to the feet, the calves and the like can be prevented. Of course, in other embodiments, the front end of the first abutting structure 131 may be disposed on the first connecting position 103, and also, on the basis of ensuring that the first abutting unit 13 has a sufficiently large contact end surface, a rest space for placing and positioning the feet, the lower legs, and the like is left, or the first abutting structure 131 may be formed to extend from the front end near the first connecting position 103 in the direction approaching the end 102 of the first frame unit 1, and the rear end of the first abutting structure 131 may be disposed on the first frame structure 11 at the position connected to the first rotating assembly 6, or disposed behind the position connected to the first rotating assembly 6 on the first frame structure 11 even at the end 102 of the first frame unit 1, which also enables the first abutting unit 3 to support the hips, the legs, and the like. Of course, in other embodiments, the first abutting structure 131 may be disposed on the first lateral supporting structure 12, or on the first frame structure 11 and the first lateral supporting structure 12, so as to support the hip, the leg, etc.

As shown in fig. 9, as a first embodiment of the present invention, the first abutting structure 131 is connected to the first frame structure 11 through the first connecting component 132, so that the first abutting structure 131 is detachably connected to the first frame structure 11, which is convenient for cleaning the first abutting structure 131, or different types of first abutting structures 131 are replaced according to different requirements, thereby making the multifunctional chair more diversified as a whole. In this embodiment, be provided with on support body structure 11 and have open-ended slot type structure, first connecting component 132 set to with this slot type structure assorted card strip structure, first support to lean on structure 131 to be connected through this card strip structure and the slot type structure buckle on the support body structure 11, easy to assemble, dismantle, of course, in other embodiments, this slot type structure and card strip structure also can set to other buckle structures, or set to the couple structure, paste other arbitrary detachable connection structure such as structure, or several kinds of detachable connection structure's combination, also can realize conveniently rinsing and replace the first of different grade type to support to lean on structure 131. Of course, in other embodiments, the first connecting assembly 132 may not be provided, and the first abutting structure 131 is directly wrapped outside the first frame structure 11 through a part or all of the structure of the end portion thereof to be connected to the first frame structure 11, so as to simplify the structure and facilitate the production and processing.

As shown in fig. 10, as a first embodiment of the present invention, the second abutting unit 23 includes a second abutting structure 231, the second abutting structure 231 is mainly used for contacting and supporting the back and the waist of the human body when the human body sits or lies on the frame structure two 21, the second abutting structure 231 is disposed on the frame structure two 21 and extends from one end close to the frame structure two 21 along the direction close to the other end of the frame structure two 21, in this embodiment, two ends of the second abutting structure 231 are respectively disposed close to two ends of the frame structure two 21, so that the second abutting structure 231 is disposed on the frame structure two 21 in a larger area, which ensures that the second abutting structure 231 has a large enough contacting end surface, and is convenient to mount and dismount. Of course, in other embodiments, the second abutting structure 231 may also be disposed on the frame structure two 21 in a partial area, so that the second abutting structure 231 has a relatively small contact end surface, and the second abutting structure 231 can also support the hip, the leg, and the like. Of course, in other embodiments, the second abutting structure 231 may also be disposed on the second lateral supporting structure 22, or disposed on the second frame structure 21 and the second lateral supporting structure 22, so as to support the back and the waist.

As shown in fig. 10, as a first embodiment of the present invention, the second abutting structure 231 is connected to the second frame structure 21 through the second connecting assembly 232, so that the second abutting structure 231 is detachably connected to the second frame structure 21, which is convenient for cleaning the second abutting structure 231, or different types of second abutting structures 231 are replaced according to different requirements, thereby making the multifunctional chair more diversified as a whole. In this embodiment, be provided with the groove type structure that has the open-ended on the second 21 of support body structure, set up to with this groove type structure assorted card strip structure through second coupling assembling 232, the second leans on structure 231 to be connected through this card strip structure and the groove type structure buckle on the second 21 of support body structure, easy to assemble, dismantle, of course, in other embodiments, this groove type structure and card strip structure also can set other buckle structures to, or set to the couple structure, paste other arbitrary detachable connection structures such as structure, or several kinds of detachable connection structure's combination, the second that also can realize conveniently wasing and replace the different grade type leans on structure 231. Of course, in other embodiments, the second connecting assembly 232 may not be provided, and the second abutting structure 231 may be directly wrapped on the outside of the second frame structure 21 by a part or the whole of the end of the second abutting structure and connected to the first frame structure 11, so as to simplify the structure and facilitate the production and processing.

As shown in fig. 9 to 10, as the first embodiment of the present invention, the first abutting structure 131 and the second abutting structure 231 are configured as a cloth structure, which reduces the cost, but of course, the cloth structure may be made of an elastic material to improve the flexibility of the chair when the chair is sitting or lying, or may be made of an inelastic material to improve the rigidity of the chair when the chair is sitting or lying, and in other embodiments, the cloth structure may be replaced by any one or a combination of several other structures such as a leather structure, a bamboo structure, a rattan structure, a plastic structure, and a wood structure, which can contact and support the buttocks, legs, back, and waist of the person when the chair is sitting or lying, and further diversify the multifunctional chair.

As shown in fig. 6, as a first embodiment of the present invention, the frame structure one 11 is configured to be an upward convex arc structure, and particularly, configured to be an upward convex arc structure gradually descending from the first connection position 103 of the frame structure one 11 in the direction of the tail end 102, the frame structure two 21 is configured to be an upward convex arc structure matching with the tail end 102 of the frame structure one 11, since the first abutting unit 13 is formed by extending from the position close to the first connection position 103 in the direction of the tail end 102, when the multifunctional chair is in the first posture of the reclining chair or the seat, the human body can lean backward and sit or lie on the first abutting unit 13 and the second abutting unit 23 arranged on the first frame unit 1 and the second frame unit 2 as a whole, so as to realize the whole body pressure release and relaxation, and the upward convex arc structure makes the hip, leg, back, waist, and the like position more fit with the first abutting unit 13 and the second abutting unit 23, stress points are more dispersed, so that the mattress is more comfortable and relaxed; when multi-functional chair is in body-building apparatus's second gesture, the human body can lean on the border position that unit 13 is close to first hookup location 103 from leaning on wholly to be the gesture that descends gradually and lie, lie and lean on unit 13 and second to lean on unit 23 at the first support body unit 13 that sets up on first support body unit 1 and second support body unit 2, carry out the body-building action such as sit up, compare and carry out this type of action on the plane in lying to one side, the intensity of body-building has been increaseed, the body-building effect has been promoted, namely, the leg has been increased, the waist, the abdomen, the back, the shoulder, the tensile range of positions such as neck, the body-building effect has been promoted, and the whole gesture that is descending gradually more accords with human structure, it is more comfortable to carry out body-building. Of course, in other embodiments, the frame structure one 11 may be an upward convex arc structure with a position between the first connection position 103 and the end 102 higher than the first connection position 103, so that when the multifunctional chair is in the first posture of the lounge chair or the chair, only the upper body and the hip part of the human body can be leaned backward to sit or lie on the first abutting unit 13 and the second abutting unit 23 arranged on the first frame unit 1 and the second frame unit 2, so as to realize certain pressure relief and relaxation, when the multifunctional chair is in the second posture of the fitness equipment, the human body can lie on the first abutting unit 13 and the second abutting unit 23 arranged on the first frame unit 1 and the second frame unit 2 in a gradually descending posture from the highest position of the upward convex arc structure, so as to perform a sit-up action, compared with the action of lying on the plane obliquely, the strength of fitness can be increased, the existing independent fitness equipment is replaced, or the first frame structure 11 can be set into a straight structure, the height of the tail end 102 of the first frame structure 11 is lower than that of the first connecting position 103, so that the attaching area can be increased to a certain extent, the comfort level is improved, the first abutting unit 13 on the first frame structure 11 and the second abutting unit 23 on the second frame structure 21 are opposite to each other by 180 degrees, the stretching range of the parts such as the thigh, the waist, the abdomen, the back, the shoulder and the neck can be increased compared with the prior art, and the fitness effect is improved.

As shown in fig. 11 to 13, as a second embodiment of the present invention, a multifunctional chair is disclosed, and the difference of the second embodiment with respect to the first embodiment is: the multifunctional chair further comprises a third supporting unit 5, the third supporting unit 5 is arranged below the rear portion of the second frame body unit 2, and the lower end of the third supporting unit 5 abuts against the first frame body unit 1. In this embodiment, on the basis that position locking is carried out to frame structure two 21 and frame structure 11 connected with it through third rotating assembly 8 in embodiment one, through addding third support element 5, make third support element 5 support and further locking the rear portion of second frame body unit 2, second frame body unit 2's stability and bearing capacity when further having strengthened multi-functional chair in the first gesture of seat or chair, prevent back, waist etc. position from leaning on second frame body unit 2 back, second frame body unit 2 atress and backward rotation, and exert the fore-and-above holding power to the rear portion of second frame body unit 2, make third support element 5 more forward and direct to the support behind the second frame body unit 2 atress, the supporting effect is better. Of course, in other embodiments, the third supporting unit 5 may be disposed directly below or forwardly below the second frame unit 2, or a combination of several directions, so as to apply a supporting force or pulling force to the second frame unit 2 in a direction directly above or rearwardly above, and also to enhance the stability and load-bearing performance of the second frame unit 2 when the multifunctional chair is in the first posture of the recliner or chair. In other embodiments, the lower end of the third supporting unit 5 may abut against the second supporting unit 4, and the same effect is achieved. In other embodiments, the third supporting member 51 may be rotatably connected to the first frame structure 11, and the third adjusting assembly 52 may be disposed on the second frame structure 21, with the same effect.

As shown in fig. 11, as a second embodiment of the present invention, the third supporting unit 5 includes a third supporting member 51 and a third adjusting assembly 52, wherein an upper end of the third supporting member 51 is rotatably connected to the movable ends of the two second frame structures 21, and a lower end of the third supporting member 51 is adjustably connected to the third adjusting assembly 52, so that the third supporting member 51 can rotate relative to the second frame structure 21 at a connection position with the second frame structure 21, and the rotated lower end of the third supporting member 51 is connected to a new position of the third adjusting assembly 52, which is adjusted relative to the third adjusting assembly 52, so as to adjust a supporting angle of the third supporting member 51 to the second frame structure 21, and further support different spreading angles between the second abutting unit 23 on the second frame structure 21 and the first abutting unit 13 on the first frame structure 11. The number of the third adjusting assemblies 52 is two, and the two third adjusting assemblies 52 are correspondingly arranged on the two first frame structures 11, so that the position of the lower end of the third supporting member 51 relative to the two first frame structures 11 can be adjusted. Of course, fixed connection structures such as welding and riveting can be adopted between the third adjusting assembly 52 and the frame body structure 11, connection stability is enhanced, and detachable connection structures such as a threaded structure, a screw and a buckle can also be adopted, so that assembly or replacement is facilitated. In addition, in other embodiments, the third adjusting assembly 52 may be disposed on the second supporting member 41 or the second reinforcing member 42, or on a combination of these components, with equal effect. In other embodiments, the third adjusting assembly 52 may not be provided, and the lower end of the third supporting member 51 may be directly adjustably connected to the first frame structure 11, or may be used for adjusting the position of the lower end of the third supporting member 51 relative to the two first frame structures 11.

As shown in fig. 13, as a second embodiment of the present invention, the third adjusting assembly 52 includes an adjusting member three 521, a plurality of adjusting channels three 522 are provided on the adjusting member three 521, each adjusting channel three 522 is provided to cooperate with the lower end of the third supporting member 51, for connecting, locking and supporting the lower end of the third supporting member 51, improving the stability of the third supporting unit 5 for supporting the second frame structure 21, meanwhile, the third adjustment channel 522 is matched with the rotation angle of the third rotation assembly 8, so that the spreading angle between the second abutting unit 23 on the second frame structure 21 and the first abutting unit 13 on the first frame structure 11 is locked at any angle of the third rotation assembly 8, and the third adjustment channel 522 corresponding to the lower end of the third support member 51 supported at an angle with the second frame structure 21 can be arranged on the third adjustment member 521, thereby realizing the support and locking of the second frame unit 2 under the condition of locking at each angle. Of course, in other embodiments, the third adjusting channel 522 may also be disposed to cooperate with only a partial rotation angle of the third rotating assembly 8, so that the third supporting unit 5 is only used for further supporting under the partial opening angle between the second abutting unit 23 on the second frame structure 21 and the first abutting unit 13 on the first frame structure 11, and the stability of the third supporting unit 5 for supporting the second frame structure 21 can also be improved.

As shown in fig. 13, as a second embodiment of the present invention, the adjusting channel three 522 is configured to be a groove-shaped structure with an open upper end, the third supporting member 51 includes two supporting members three 511 and two clamping members three 512, wherein the two supporting members three 511 are provided, the upper ends of the two supporting members three 511 are respectively rotatably connected to the two frame structures two 21 through a hinge member three 513, the lower ends of the two supporting members three 511 are respectively connected to the clamping member three 512 at positions close to the two end portions, and the clamping member three 512 between the position where the two supporting members three 511 are connected to the clamping member three 512 and the two end portions of the clamping member three 512 is used for clamping with the groove-shaped structure, so as to support and lock the lower end of the third supporting member 51 in one. In this embodiment, the groove-shaped structure is matched with the structure of the region between the end of the third adjusting member 512 and the position connected with the third support member 511, so as to enhance the stability of the third adjusting member 52 on supporting the lower end of the third support member 51, and the third support member 512 is integrally configured as a cylindrical rod structure, the groove-shaped structure is configured as a corresponding U-shaped groove structure, so that the third support member 512 can be conveniently clamped into the third adjusting passage 522 through the opening from various angles and directions, the operation is simple, the structure is simple, the production and processing are easy, of course, in other embodiments, the third support member 512 can only configure the structure of the region between the end and the position connected with the third support member 511 as a cylindrical structure, and the structure of the region between the positions connected with the two third support members 511 as other structures such as a square structure and a polygonal structure, so that the third support member 512 can be conveniently clamped into the third adjusting passage 522 through the opening from various angles and directions, or the third clamping piece 512 is arranged into a square structure, a polygonal structure and other structures matched with the groove-shaped structure, or is arranged into other structures not matched with the groove-shaped structure, and the lower end of the third supporting piece 51 can be supported and locked in one of the adjusting channels three 522. In this embodiment, the opening of the groove-shaped structure is formed by arranging the first engaging portion 523 and the second engaging portion 524 at an interval, the interval width between the first engaging portion 523 and the second engaging portion 524 is smaller than the width of the groove-shaped structure, and the first engaging portion 523 and the second engaging portion 524 are made of slightly elastic materials, so that after the end of the third engaging member 512 is inserted into the groove-shaped structure, the third engaging member 512 is firmly limited in the groove-shaped structure by the first engaging portion 523 and the second engaging portion 524 to prevent loosening, and the first engaging portion 523 slightly protrudes out of the inner side of the groove-shaped structure, the second engaging portion 524 relatively protrudes out of the inner side of the groove-shaped structure, that is, the end of the third engaging member 512 is mainly limited by the second engaging portion 524, so that when the second frame body structure 21 rotates along the direction of the head end 101 or the tail end 102 of the first frame body structure 11, that is, the third supporting member 51 is driven to move forward or backward relative to the third adjusting, that is, the both ends of three joint spare 512 break away from respectively in a certain regulation passageway three 522 and extend the up end slip of a plurality of block portion 523 and block portion two 524, after frame body structure two 21 adjusts to required angle, push down frame body structure two 21 or third support piece 51, three joint spare 512 receives the force card promptly and inserts another regulation passageway three 522, the operation is simpler, it is more convenient to use, of course, in other embodiments, the opening of this channel type structure also can set to other structures that the width is less than the channel type structure width, also can firmly inject three joint spare 512 in this channel type structure, prevent to become flexible. When the third supporting unit 5 is not needed, the third clamping member 512 is only needed to be separated from the third adjusting member 521, and the third supporting unit 5 can be folded and collected behind the second frame body unit 2 by rotating the third hinge member 513 relative to the second frame body structure 21, so that the use of the multifunctional chair as a seat, a deck chair or a fitness equipment is not affected. Of course, the third supporting member 51 in this embodiment is made of metal material such as steel, iron, etc. to enhance the firmness of the structure, in other embodiments, the third supporting member 51 may also be made of metal material such as wood, plastic, etc. or other materials, or a combination of these materials, so as to make the multifunctional chair more versatile. Of course, the third supporting unit 5 in this embodiment can be used in other embodiments, so that the multifunctional chair in other embodiments can also have the effect.

As shown in fig. 14 to 16, as a third embodiment of the present invention, a multifunctional chair is disclosed, and the difference of the third embodiment with respect to the second embodiment is: the third rotating assembly 8 includes a third connecting member 821 and a rotating shaft 822, wherein the third connecting member 821 is connected to the second frame structure 21, one end of the rotating shaft 822 is connected to the first frame structure 11, and the other end of the rotating shaft is rotatably connected to the third connecting member 821. In this embodiment, the structures of the ratchet arm 811, the ratchet 812, the ratchet shaft 813, the rotating arm 814, the check pawl 815, the check pawl shaft 816, the returning member 817 and the returning member 818 in the second embodiment are replaced by the connecting member iii 821 and the rotating shaft 822, so that the structure is simplified, and the production and the processing are facilitated. In this embodiment, three 821 of connecting pieces can carry out 360 degrees all-round rotations of direction relative to three 822 of axis of rotation, when multi-functional chair is in the first gesture of deck chair or seat, can follow head end 101 direction or terminal 102 direction accessible rotation second support body unit 2 of first support body unit 1, and through the angle and the position locking after third support piece 5 will rotate, realize that second support body unit 2 struts the fixed of angle relative to first support body unit 1, increased the relative support body structure 11 of support body structure two 21 and strutted the angular range, and the operation is simple, and wide application range, and suitable crowd is more. Of course, the fixed connection structures such as welding, riveting and the like can be adopted between the third connecting piece 821 and the second frame structure 21 and between the third rotating shaft 822 and the first frame structure 11, so that the connection stability is enhanced, and the detachable connection structures such as screws, buckles and the like can also be adopted, so that the assembly or the replacement is convenient. In addition, in other embodiments, the second frame structure 21 and the first frame structure 11 may be directly rotatably connected by a rotating shaft or other hinge structure, and the second frame unit 2 can be rotated 360 degrees relative to the head end 101 or the tail end 102 of the first frame unit 1 without any obstacle. In other embodiments, it is also possible to connect the third connecting member 821 with the first frame structure 11 and connect the third rotating shaft 822 with the second frame structure 21, with the same effect. Of course, the third rotating assembly 8 in this embodiment can be used in other embodiments, so that the multifunctional chair in other embodiments can also have the effect.

As shown in fig. 17 to 19, as a fourth embodiment of the present invention, a multifunctional chair is disclosed, and the fourth embodiment is different from the third embodiment in that: the first frame structure 11 is a split structure, and includes a first frame portion 111 and a second frame portion 112, wherein the second frame portion 112 and the first frame portion 111 are pivotally connected, and the second frame portion 112 can be rotated relative to the first frame portion 111, so as to change an angle formed between the first frame portion 111 and the second frame portion 112. In this embodiment, when the second frame portion 112 rotates relative to the first frame portion 111 to abut against the first frame portion 111, the second frame portion 112 can be folded and folded, so that the second frame portion 112 can be folded and folded on the basis of folding and folding the first support unit 3 and the positioning unit 9 of the multifunctional chair in the third embodiment, so that the multifunctional chair can be completely folded and folded, the overall size of the multifunctional chair is greatly reduced, and the multifunctional chair is more convenient to store, package, carry or transport, when the second frame portion 112 rotates relative to the first frame portion 111 to the original state, the second frame portion 112 can be unfolded for use, of course, the pivotal connection piece between the first frame portion 111 and the second frame portion 112 is selected to enable the second frame portion 112 to rotate relative to the first frame portion 111 to fold and form the pivotal connection piece of the upward convex arc structure of the first frame portion 11 when unfolded and used, in this embodiment, the first pivot connection member is a first pivot connection member 113, the first pivot connection member 113 includes a third frame portion 115 and two first pivot connection members 114 hinged to two ends of the third frame portion 115, so that the first frame portion 111 and the second frame portion 112 can be respectively hinged to the two first pivot connection members 114 and can be folded and folded relative to two ends of the third frame portion 115, compared with the case where the first frame portion 111 and the second frame portion 112 are pivotally connected by only one first pivot connection member 114, this embodiment can make the folded and folded multifunctional chair structure more compact, and avoid the situation that the first frame unit 1 is interfered and unsmooth in the folding and folding process due to the influence of its own structure, and the third frame portion 115 is configured in the shape of the first frame portion 11, so that the first frame portion 11 having the folding effect still maintains the upward convex arc shape of the first frame portion 11, and has the same first posture for a reclining chair or a second posture for a fitness equipment as the first frame portion 11, and has a second posture for a fitness The two-position usage effect, of course, in other embodiments, the frame portion three 115 may also be configured to have other shapes such as a downward convex arc shape or a straight rod shape different from the frame structure one 11, so as to avoid the situation that the first frame unit 1 is interfered by its own structure and is not smoothly folded in the folding process. In this embodiment, the frame body portion two 112 can be folded and folded under the frame body portion one 111, because the frame body portion one 11 is configured to be an upward convex arc structure, the folded and folded multifunctional chair structure is more compact, and can prevent the multifunctional chair from being damaged due to collision in the process of storage, packaging or transportation, meanwhile, because the frame body structure two 21 can rotate 360 degrees relative to the frame body portion one 11 without obstacles, the second frame body unit 2 and the third support unit 5 can be folded and folded under the frame body portion one 111, the overall volume of the multifunctional chair is further reduced, and because the transverse support structures one 12 and the transverse support structures two 22 are arranged at intervals, the transverse support structures one 12 and the transverse support structures two 22 can be staggered, the folded and folded multifunctional chair structure is further more compact, and the overall volume of the multifunctional chair is reduced again, the storage, packaging, carrying or transportation is more convenient, however, in other embodiments, the first frame portion 111 and the second frame portion 112 may be connected by only one pivoting connection piece 114, and the second frame portion 112 may also be folded and collected under the first frame portion 111. In other embodiments, the second frame portion 112, the second frame unit 2 and the third supporting unit 5 may be folded over the first frame portion 111, so as to reduce the overall size of the multifunctional chair, and facilitate storage, packaging, carrying or transportation. In this embodiment, only one pivoting structure one 113 is provided, so that the whole frame structure one 11 can be folded and folded, in other embodiments, two, three or more pivoting structures one 113 can be provided on the frame structure one 11, so that the frame structure one 11 has a folding effect of three folding, four folding or even more folding, in other embodiments, the frame part one 111 and the frame part two 112 can be connected through a telescopic structure, the size of the whole multifunctional chair can be reduced by shortening the whole length of the frame structure one 11, and the multifunctional chair is more convenient to store, package, carry or transport. Of course, the frame structure one 11 in this embodiment can be used in other embodiments, so that the multifunctional chair in other embodiments can also have this effect, the multifunctional chair provided with the frame structure one 11, the third rotating assembly 8 can be connected with any one or a combination of several of the frame parts one 111, two 112, one 113 or the second support 41, and the second frame unit 2 can be connected with the first frame unit 1 in a rotating manner, so that the multifunctional chair has two using states, namely, the first posture for the lounge chair or the chair and the second posture for the fitness equipment.

As shown in fig. 20 to 21, as a fifth embodiment of the present invention, a multifunctional chair is disclosed, and the difference between the fifth embodiment and the first embodiment is: the first frame structure 11 is provided with the first pivot structure 113 in the fourth embodiment, and since the rotation angle between the ratchet arm 811 and the rotating arm 814 has a certain range limitation, the second frame unit 2 and the third support unit 5 can be folded and collected above the first frame part 111, and the overall size of the multifunctional chair can be reduced on the basis of the first embodiment, so that the multifunctional chair is convenient to store, package, carry or transport.

As shown in fig. 22 to 23, as a sixth embodiment of the present invention, a multifunctional chair is disclosed, and the first difference of the sixth embodiment with respect to the fourth embodiment is: the first supporting member 31 is configured as a split structure, and includes a first supporting portion 311 and a second supporting portion 312, wherein the first supporting member 31 is directly connected to the first connecting position 103 on the frame body structure one 11 without being connected through the first rotating assembly 6, and the second supporting portion 312 is pivotally connected to the first supporting portion 311 and can rotate the second supporting portion 312 relative to the first supporting portion 311, so as to change an angle formed between the first supporting portion 311 and the second supporting portion 312. In this embodiment, when the second supporting portion 312 rotates relative to the first supporting portion 311 to abut against the lower portion of the first frame portion 111, the second supporting portion 312 can be folded, so as to reduce the overall size of the multifunctional chair, and facilitate storage, packaging, carrying or transportation, and when the second supporting portion 312 rotates relative to the first supporting portion 311 to the original state, the second supporting portion 312 can be unfolded for use. In this embodiment, the second pivot structure 313 between the first support part 311 and the second support part 312 is a hinge structure, which is simple in structure and convenient for assembly and use, and in other embodiments, the second pivot structure 313 may also be another pivot connecting part capable of enabling the second support part 312 to rotate and fold relative to the first support part 311 and forming the shape and structure of the original first support part 31 when the second support part 312 is unfolded for use, and also capable of enabling the second support part 312 to switch between the folded state and the unfolded state. In addition, the lower end of the first supporting portion 311 in this embodiment is disposed close to the first connecting position 103, and the positioning connection member 91 is disposed only on the second supporting portion 312, so that the folded and folded second supporting portion 312 is closer to the first frame structure 11, and the folded and folded multifunctional chair is more compact as a whole, of course, in another embodiment, the lower end of the first supporting portion 312 may be disposed slightly away from the first connecting position 103, the positioning connection member 91 may be disposed on both the first supporting portion 311 and the second supporting portion 312, or disposed only on the first supporting portion 311, and the second supporting portion 312 can be rotatably folded relative to the first supporting portion 311, and converted between the folded state and the unfolded state, in addition, the connecting end of the first supporting portion 311 and the second supporting portion 312 is further provided with a positioning protrusion, and the connecting end of the second supporting portion 312 is correspondingly provided with a positioning groove, the positioning device is used for positioning the second supporting part 312 after being unfolded, so that the connection stability is enhanced, and the first supporting part 311 or the second supporting part 312 is prevented from being twisted, inclined and the like. The first supporting member 31 in this embodiment is made of a wooden material to enhance the comfort, and in other embodiments, the first supporting member 31 may also be made of a metal material such as steel or iron, or a plastic material, or other materials, or a combination of these materials, so as to make the multifunctional chair more versatile. Of course, the first support 31 of the present embodiment can be used in other embodiments, so that the multifunctional chair of other embodiments can also have the effect.

As shown in fig. 22, the second difference of the sixth embodiment from the fourth embodiment is that: the first supporting member 31 is provided with a structure with a narrow upper part and a wide lower part, and the rod body structure in the fourth embodiment is replaced, so that the lower end surface of the first supporting member 31 has a larger contact area with the installation end surfaces such as the ground, and the overall stability and the bearing performance of the multifunctional chair are improved. Of course, the first support 31 of the present embodiment can be used in other embodiments, so that the multifunctional chair of other embodiments can also have the effect.

As shown in fig. 22, the third difference of the sixth embodiment from the fourth embodiment is that: the second supporting unit 4 is connected to the main body of the first supporting unit 3 near the end 102 and the end 102, that is, the second supporting unit 4 integrated with the frame structure one 11 in the fourth embodiment is replaced by a separate second supporting unit 4, the second supporting unit 4 includes two second supporting members 41 connected to the main body of the frame structure one 11 near the end 102 and the end 102, and a second reinforcing member 42 disposed between the two second supporting members 41, and the second supporting member 41 is configured to be narrow at the top and wide at the bottom, the rod body structure in the fourth embodiment is replaced, so that the lower end surface of the second supporting member 41 has a larger contact area with the installation end surfaces such as the ground, and the stability and the load-bearing performance of the multifunctional chair as a whole are improved. In this embodiment, second support 41 and frame structure 11 are close to terminal 102's main part and terminal 102 and link to each other, the area of contact of connection region has been increased, the stability of connection has been improved, of course, in other embodiments, this second support 41 also can link to each other with frame structure 11's terminal 102 alone or the position that is close to terminal 102, this second support 41 and frame structure 11 between can adopt fixed connection structure connection such as welding, riveting, improve the stability of connection, can also adopt detachable connection structure connection such as screw, buckle, be convenient for installation, dismantle. The second supporting member 41 in this embodiment is made of a wooden material to enhance the comfort, and in other embodiments, the second supporting member 41 may also be made of a metal material such as steel or iron, or a plastic material, or other materials, or a combination of these materials to make the multifunctional chair more versatile. Of course, the second support 41 of this embodiment can be used in other embodiments, so that the multifunctional chair of other embodiments can also have the effect.

As shown in fig. 24 to 25, as a seventh embodiment of the present invention, a multifunctional chair is disclosed, and the first difference of the seventh embodiment with respect to the fourth embodiment is: the third supporting unit 5 includes an upper third supporting member 531 and a lower third supporting member 532, wherein an upper end of the upper third supporting member 531 is rotatably connected with the second shelf structure 21, an upper end of the lower third supporting member 532 is cooperatively connected with the upper third supporting member 531, and a lower end of the lower third supporting member 532 is detachably connected with the first shelf structure 11. The upper third support member 531 and the lower third support member 532 in this embodiment replace the third support member 51 and the third adjusting assembly 52 in the fourth embodiment, the support of the second rack structure 21 at each angle can also be realized through the structural matching between the upper third support member 531 and the lower third support member 532, in other embodiments, the lower end of the lower third support member 532 can also be movably connected with the first rack structure 11 through an adjustable structure, and the support of the second rack structure 21 at each angle is realized through the adjustable structure or the matching structure combining the upper third support member 531 and the lower third support member 532. Of course, in other embodiments, the lower end of the lower third supporting member 532 may be connected to the second supporting unit 4, and the same effect can be achieved. In this embodiment, the upper third supporting member 531 and the lower third supporting member 532 are configured to be telescopic structures, when the height of the second rack unit 2 relative to the installation end surface such as the ground or the angle relative to the first abutting unit 13 needs to be adjusted, the connecting end third 5321 is gradually contracted and hidden in the installation channel third 5311, that is, the height of the second rack unit 2 relative to the installation section such as the ground is reduced, the angle of the second rack unit 2 relative to the first abutting unit 13 is increased, when the lower third supporting member 532 is gradually extended and expanded relative to the upper third supporting member 532, the height of the second rack unit 2 relative to the installation end surface such as the ground is increased, the angle of the second rack unit 2 relative to the first abutting unit 13 is decreased, and the operation is simple and the use is convenient Other adjustable structures such as a buckle structure are matched and connected with each other, and the overall length of the upper third support member 531 and the lower third support member 532 can be changed to support the second frame structure 21 at each angle. Of course, the upper third supporting member 531 and the lower third supporting member 532 in this embodiment are made of metal materials such as steel and iron, which enhances the firmness of the structure, and in other embodiments, the upper third supporting member 531 and the lower third supporting member 532 may also be made of metal materials such as wood and plastic, or other materials, or a combination of these materials, which makes the multifunctional chair more versatile. Of course, the third supporting unit 5 in this embodiment can be used in other embodiments, so that the multifunctional chair in other embodiments can also have the effect.

As shown in fig. 24, the difference between the seventh embodiment and the fourth embodiment is that: the first supporting member 31 is configured as a split structure, and includes a first supporting portion 311 and a second supporting portion 312, wherein the upper end of the second supporting portion 312 is connected to the lower portion of the first supporting portion 311 in a matching manner, and the lower end surface of the second supporting portion 312 abuts against the installation end surfaces of installation media such as floors, floor mats, sand and stones, and indoor or outdoor platforms, etc., and the total length of the first supporting portion 311 and the second supporting portion 312 is changed, so that the height between the installation end surfaces of the first connection position 103 on the frame body structure one 11 relative to the ground, etc. can be changed. In this embodiment, the first supporting member 31 of the integrated structure in the fourth embodiment is replaced with the first supporting member 31 of the split structure including the first supporting portion 311 and the second supporting portion 312, through the structural matching between the second supporting portion 312 and the first supporting portion 311, the first supporting member 31 supports the first connection position 103 of the first frame structure 11 and can fold the first supporting member 31 on the base below the first frame structure 11 through the first rotating assembly 6, and the length of the first supporting member 31 can be adjusted, so as to adjust the overall height of the multifunctional chair, so that the multifunctional chair has a richer use state, and the application range is wider. In this embodiment, the second supporting portion 312 and the first supporting portion 311 are arranged to be of a telescopic structure, and the overall height of the multifunctional chair can be adjusted by changing the overall length of the second supporting portion 312 and the first supporting portion 311, which is simple in operation and convenient in use, and of course, in other embodiments, the first supporting portion 311 and the second supporting portion 312 may be connected by matching with each other by adopting other adjustable structures such as a sliding rail structure and a buckle structure, and the overall height of the multifunctional chair can also be adjusted by changing the overall length of the first supporting portion 311 and the second supporting portion 312. In addition, the lengths of the first supporting portion 311 and the second supporting portion 312 in this embodiment are substantially the same, the two positioning connectors 91 are respectively disposed between the two first supporting portions 311 and between the two second supporting portions 312, so that the length of the contracted second supporting portion 312 coinciding with the first supporting portion 311 is longer, the total length of the expanded second supporting portion 312 coinciding with the first supporting portion 311 is longer, the height adjustment range of the first supporting member 31 for the multifunctional chair as a whole is larger, and at the same time, the interval between the two positioning connectors 91 is larger or smaller, which can be adapted to the placement or positioning of feet, lower legs and other parts with different intervals, of course, in other embodiments, the lengths of the first supporting portion 311 and the second supporting portion 312 can also be set to have a larger difference, the two positioning connectors 91 can also be disposed only on the first supporting portion 311 or only on the second supporting portion 312, the height of the whole multifunctional chair can be adjusted by changing the total length of the first support part 311 and the second support part 312. Of course, in the present embodiment, the first supporting portion 311 and the second supporting portion 312 are made of metal materials such as steel and iron, etc. to enhance the firmness of the structure, in other embodiments, the first supporting portion 311 and the second supporting portion 312 may also be made of metal materials such as wood and plastic, etc. or other materials, or a combination of these materials, so as to make the multifunctional chair more versatile. Of course, the first support 31 of the present embodiment can be used in other embodiments, so that the multifunctional chair of other embodiments can also have the effect.

As shown in fig. 24, the seventh embodiment differs from the fourth embodiment in the third point: second support 41 sets up into the body structure, including third supporting part 411 and fourth supporting part 412, wherein, the upper end of fourth supporting part 412 is connected with the lower part of third supporting part 411 mutually supporting, and the lower terminal surface supports on leaning on with the mounting surface of mounting medium such as floor, ground mat, gravel and various indoor or outdoor platforms, changes the overall length of third supporting part 411 and fourth supporting part 412, can change the rear end of frame body structure 11 for the height between the mounting surface such as ground. In this embodiment, the second supporting member 41 of the integrated structure in the fourth embodiment is replaced with the second supporting member 41 of the split structure including the third supporting portion 411 and the fourth supporting portion 412, and through the structural cooperation of the fourth supporting portion 412 and the third supporting portion 411, on the basis that the second supporting member 41 supports the rear end of the first frame structure 11, the length of the second supporting member 41 can be adjusted, so that the height of the rear end of the multifunctional chair can be adjusted, the multifunctional chair has a richer use state, and the application range is wider. In this embodiment, the fourth supporting portion 412 and the third supporting portion 411 are arranged to be retractable structures, and the height of the multifunctional chair rear end can be adjusted by changing the total length of the fourth supporting portion 412 and the third supporting portion 411, so that the operation is simple, the use is convenient, of course, in other embodiments, other adjustable structures such as a sliding rail structure and a buckle structure can be adopted between the third supporting portion 411 and the fourth supporting portion 412 to be mutually matched and connected, and the height of the multifunctional chair rear end can be adjusted by changing the total length of the third supporting portion 411 and the fourth supporting portion 412. In addition, the second reinforcing member 42 in this embodiment is disposed between the ends of the two fourth supporting portions 412, so as to increase the contact area between the second supporting unit 4 and the installation end surfaces such as the ground, and improve the stability of the multifunctional chair when being placed, in addition, the second supporting members 41 on two sides are also connected into a whole by the second reinforcing member 42, so that the second supporting unit 4 can be conveniently folded or extended integrally relative to the first frame body unit 1, of course, in other embodiments, the second reinforcing member 42 may also be disposed between other positions of the two fourth supporting portions 412 or between the two third supporting portions 411, so as to enhance the stability and the load-bearing performance of the structure of the second supporting unit 4. Of course, in this embodiment, the third supporting portion 411 and the fourth supporting portion 412 are made of metal materials such as steel and iron, etc. to enhance the firmness of the structure, in other embodiments, the third supporting portion 411 and the fourth supporting portion 412 may also be made of metal materials such as wood and plastic, etc. or other materials, or a combination of these materials, so as to make the multifunctional chair more versatile. Of course, the second support 41 of this embodiment can be used in other embodiments, so that the multifunctional chair of other embodiments can also have the effect.

As shown in fig. 24, the difference between the seventh embodiment and the fourth embodiment is as follows: the second supporting unit 4 is rotatably connected to the first frame unit 1 via a second rotating assembly 7. In this embodiment, through addding second rotating component 7, make second supporting element 4 rotate relative to first support body unit 1, on the one hand, the relative angle between second supporting element 4 and first support body unit 1 is adjusted to the accessible, thereby change the angle between second supporting element 4 and the installation terminal surfaces such as ground and the holistic height of multi-functional chair, and then change second supporting element 4 to the direction of support of first support body unit 1, form different bearing structure, make multi-functional chair have abundanter user state, on the other hand, rotate second supporting element 4 to the back that leans on with first support body unit 1, still can fold second supporting element 4 alone and close, thereby provide more folding modes of closing for multi-functional chair. In this embodiment, two second rotating assemblies 7 are provided, the second supporting member 41 on the same side is connected to the first frame structure 11 through one second rotating assembly 7, and the second supporting member 41 on the same side is driven by the second reinforcing member 42 to rotate relative to the first frame structure 11 on the same side, so that the second supporting unit 4 can be conveniently folded and retracted independently.

As shown in fig. 25, as a seventh embodiment of the present invention, the second rotating assembly 7 includes a second connecting member 71, a second rotating shaft 72 and a second limiting member 73, wherein one end of the second connecting member 71 is hinged to the first frame structure 11 through the second rotating shaft 72, and the other end is hinged to the second supporting member 41 through another second rotating shaft 72 arranged at an interval, so that the second supporting member 41 can rotate relative to the connecting position on the first frame structure 11, the second rotating shaft 72 is arranged perpendicular to the direction of the first frame structure 11, and the second limiting member 73 is arranged on the upper portion of the second connecting member 71, so that the rotating tracks of the two second supporting members 41 are limited in the parallel direction of the first frame structure 11, thereby preventing the instability of the whole multifunctional chair caused by the inconsistency of the rotating angles and directions of the two second supporting members 41. In this embodiment, when the second support unit 4 is rotated backward relative to the first frame unit 1 until the top end of the second support member 41 abuts against the second limit member 73, i.e. the second support unit 4 is unfolded under the driving of the second support member 41, at this time, the multifunctional chair can be stably placed on the installation end surfaces such as the ground for use, when the second support unit 4 is rotated forward relative to the first frame unit 1 until the second support unit abuts against the first frame unit 1, i.e. the second support unit 4 is folded under the driving of the second support member 41, at this time, the overall volume of the multifunctional chair is reduced, which is convenient for storage, packaging, carrying or transportation, and of course, in other embodiments, a locking member can be further provided to lock the second support member 41 at any angle relative to the second connecting member 71, so as to integrally fix the second support member 41 and the first frame unit 1 at different angles and positions, the multifunctional chair is used for supporting at different angles and positions, so that the multifunctional chair has richer use states. In other embodiments, the second rotating assembly 7 may also be configured as other connecting structures such as a hinge, which can rotate the second supporting member 41 relative to the first frame structure 11, and can also switch the second supporting unit 4 between the unfolded state and the folded state, so as to facilitate use, storage, packaging, carrying or transportation. In addition, the structure of the second rotating component 7 in the embodiment can also be adopted by the first pivot connecting element 114 in the fourth embodiment or the second pivot connecting element 313 in the sixth embodiment. Of course, the second rotating assembly 7 in this embodiment can be used in other embodiments, so that the multifunctional chair in other embodiments can also have the effect.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made in the claims of the present invention should be covered by the claims of the present invention.