阅读说明：本技术 一种装配式的弹性沙发椅 (Assembled elastic sofa chair ) 是由 刘文守 刘长权 于 2021-02-02 设计创作，主要内容包括：本发明公开了一种装配式的弹性沙发椅,其包括：靠背、座部、椅脚和扶手；所述靠背设置有多段支撑杆,每段支撑杆之间均设有连接件来进行连接；所述靠背的正面还设有多个靠枕；所述靠背、扶手与座部之间设有锥形连接件来进行连接；所述座部与椅脚之间设有弹性伸缩杆来进行连接；所述椅脚的底部设有弹性脚垫。本发明的弹性沙发椅靠背部位具有多层弹性结构,更为贴合使用者的背部,使用舒适感更好也更能对使用者的背部起到保护作用。(The invention discloses an assembled elastic sofa chair, which comprises: a backrest, a seat, chair legs and armrests; the backrest is provided with a plurality of sections of supporting rods, and connecting pieces are arranged among the sections of supporting rods for connection; the front surface of the backrest is also provided with a plurality of back rests; conical connecting pieces are arranged among the backrest, the armrests and the seat part for connection; an elastic telescopic rod is arranged between the seat part and the chair leg for connection; the bottom of the chair leg is provided with an elastic foot pad. The backrest part of the elastic sofa chair has a multi-layer elastic structure, is more attached to the back of a user, has better use comfort and can protect the back of the user.)

1. An assembled flexible sofa, comprising: a backrest, a seat, chair legs and armrests; the backrest is provided with a plurality of sections of supporting rods, and connecting pieces are arranged among the sections of supporting rods for connection; the front surface of the backrest is also provided with a plurality of back rests; conical connecting pieces are arranged among the backrest, the armrests and the seat part for connection; an elastic telescopic rod is arranged between the seat part and the chair leg for connection; the bottom of the chair leg is provided with an elastic foot pad.

2. The assembly-type flexible sofa of claim 1, wherein said headrest and said armrest are provided with a flexible member inside; the elastic component is formed into a multilayer three-dimensional structure by bending, twisting and overlapping one or more spring steel wires; the elastic component can provide lasting and natural elastic force for the headrest and the armrests when being pressed by the body; the resilient member has a variety of different configurations.

3. The assembly-type elastic sofa of claim 1, wherein the connecting member body is a connecting spring or a spirally bent steel wire made of a high-strength material; the connecting piece has a plurality of different appearance structures; and a joint protection device is also arranged outside the connecting piece.

4. The assembled flexible sofa chair according to claim 3, wherein the joint protector comprises an extension spring and a bend protector; the bending protection device is arranged at the front part or the rear part of the connecting piece and can limit and protect the connecting piece and the supporting rod at the upper end of the connecting piece when the connecting piece is pressed backwards; the bend relief devices have a variety of configurations.

5. The assembled flexible sofa chair according to claim 1, wherein the seat portion is a flexible layer and a floor layer; the bottom plate is connected with the elastic layer through a spring; the elastic layer comprises an outer frame and elastic materials uniformly distributed in the middle of the outer frame.

6. The assembled flexible sofa of claim 1, wherein said tapered connectors have a plurality of configurations; the conical connecting piece can drive the backrest and the armrests to shake in multiple directions and at multiple angles.

7. The assembled elastic sofa chair according to claim 1, wherein the spring foot pad comprises a foot pad mounting seat, the foot pad mounting seat is fixed on the bottom of the supporting leg through a bolt on the top surface of the inner cavity, a foot pad spring is fixed in the inner cavity of the foot pad mounting seat through a clamping piece and a nut, a foot pad connecting rod is fixed on the lower end of the foot pad spring, the bottom of the foot pad connecting rod is connected with a foot pad through a rotating piece, and the bottom of the foot pad is provided with a non-slip pad.

Technical Field

The invention particularly relates to the field of furniture, in particular to an assembled elastic sofa with multiple three-dimensional elasticity.

Background

A chair, which is the most commonly used item in daily life, generally consists of a seat plate supporting the buttocks of a user, a backrest vertically installed on the seat plate to support the back of the user, and chair legs under the seat plate. The backrest of the chair is mostly curved so that the backrest can properly support the back and waist of the user. However, in the case of the conventional chair, since the shape of the backrest is fixed, the portion supported by the backrest cannot be changed according to the body shape and the use state of the user, being restricted, thereby causing discomfort to the user.

Disclosure of Invention

The present invention aims to overcome the above-mentioned shortcomings and provide a technical solution to solve the above-mentioned problems.

An assembled flexible sofa, comprising: a backrest, a seat, chair legs and armrests; the backrest is provided with a plurality of sections of supporting rods, and connecting pieces are arranged among the sections of supporting rods for connection; the front surface of the backrest is also provided with a plurality of back rests; conical connecting pieces are arranged among the backrest, the armrests and the seat part for connection; an elastic telescopic rod is arranged between the seat part and the chair leg for connection; the bottom of the chair leg is provided with an elastic foot pad.

Preferably, elastic members are arranged inside the headrest and the armrests; the elastic component is formed into a multilayer structure by bending, twisting and overlapping one or more spring steel wires; the elastic component can provide lasting and natural elastic force for the headrest and the armrests when being pressed by the body; the resilient member has a variety of different configurations.

Preferably, the connecting piece main body is a connecting spring made of high-strength materials or a spirally bent steel wire; the connecting piece has a plurality of different appearance structures; and a joint protection device is also arranged outside the connecting piece.

Preferably, the joint protector comprises an extension spring and a bend protector; the bending protection device is arranged at the front part or the rear part of the connecting piece and can limit and protect the connecting piece and the supporting rod at the upper end of the connecting piece when the connecting piece is pressed backwards; the bend relief devices have a variety of configurations.

Preferably, the seat part is divided into an elastic layer and a bottom plate layer; the bottom plate is connected with the elastic layer through a spring; the elastic layer comprises an outer frame and elastic materials uniformly distributed in the middle of the outer frame.

Preferably, the tapered connector has a variety of configurations; the conical connecting piece can drive the backrest and the armrests to shake in multiple directions and at multiple angles.

Preferably, the spring foot pad includes the callus on the sole mount pad, the callus on the sole mount pad is fixed in through the bolt fastening of inside cavity top surface the bottom of supporting legs, be fixed with the callus on the sole spring through card and nut in the inside cavity of callus on the sole mount pad, the lower extreme of callus on the sole spring is fixed with the callus on the sole connecting rod, the bottom of callus on the sole connecting rod is connected with the callus on the sole through rotating the piece, the callus on the sole bottom is equipped with the slipmat.

Compared with the prior art, the invention has the beneficial effects that:

the backrest part is formed into an S shape, and the support rods of the backrest are divided into a plurality of sections and connected through connecting pieces; the shape of the backrest may be changed according to the shape of the spine to improve comfort, feel, provide protection to the body, relieve fatigue and relax muscles.

The connecting piece can deflect within an angle range, moves along with the movement of the back of a user and adjusts the shape of the backrest part, so that the connecting piece can adapt to different pressures and can be tightly attached to the back of the user to provide elastic support and protection, different supporting forces are provided for the user, more use environments can be adapted, the supporting force provided when the pressure is higher can be higher, better support feeling and support experience are provided for the user, and better and more comprehensive protection is provided for the user.

And a back cushion is arranged at the part of the backrest, which is in contact with a user, an elastic component, a plurality of layers of elastic fillers and air are arranged in the back cushion, so that the pressure can be effectively dispersed to all directions (front, back, left, right, up and down), and the fatigue of bones and muscles can be effectively relieved by increasing the adhesive force. The elastic member, the air bag with the air holes and the elastomer filled inside can provide more comfortable and comprehensive elasticity, and can also prevent permanent deformation possibly caused by external force, so that the service life of the whole headrest is longer.

Fourthly, elastic materials are uniformly distributed in the middle of the elastic layer connected with the bottom plate layer through the spring; the springs in the respective positions are compressed by the weight of the user and the seat is tilted; the user can provide better comfort and touch feeling and more comprehensive elasticity and body protection function when sitting on the elastic layer no matter what angle.

And fifthly, the conical connecting piece can swing in multiple directions and at multiple angles, so that the backrest part and the armrest part can move relatively along with the movement of a user, and then keep in contact with the body of the user all the time and protect the user, the blood vessel of the user cannot be oppressed, the blood circulation of the user is smooth, and more comprehensive and comfortable elastic support feeling and protection effect are provided for the user all the time.

Sixth, the invention produces and assembles the armrest and the back of the sofa bed separately, improve the production efficiency through a plurality of automatic transport systems such as the conveyer belt, etc., have greatly reduced the cost of production, pack expenses, logistics expenses, warehousing expenses are also reduced by a wide margin.

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

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic side view of the structure of the present invention.

Fig. 3 is a schematic structural view of a first connecting member and a first joint protector according to the present invention.

Fig. 4 is a schematic view of a second assembly structure of the present invention.

Fig. 5 is a schematic structural view of a second connecting member and a second joint protector according to the present invention.

Fig. 6 is a schematic structural view of a second connecting member and a third joint protector according to the present invention.

Fig. 7 is a schematic view of the structure of a third connector of the present invention.

Fig. 8 is a schematic structural view of a first elastic member of the present invention.

Fig. 9 is another structural view of the first elastic member of the present invention.

Fig. 10 is still another structural view of the first elastic member of the present invention.

Fig. 11 is a schematic structural view of a first elastic member of the present invention.

Fig. 12 is a schematic cross-sectional view of a first headrest of the present invention.

Fig. 13 is a schematic cross-sectional view of a second headrest of the present invention.

FIG. 14 is a schematic cross-sectional view of a first tapered connector of the present invention.

FIG. 15 is a schematic cross-sectional view of a second tapered connector of the present invention.

Fig. 16 is a cross-sectional structural view of a footpad portion of the present invention.

Fig. 17 is a schematic view of a rectangular spring within a footpad in accordance with the present invention.

Fig. 18 is a schematic view of the structure of the inner card of the footpad of the present invention.

Fig. 19 is a schematic structural view of a second elastic member of the present invention.

Fig. 20 is a schematic structural view of a second elastic member according to the present invention.

Fig. 21 is a schematic view showing the second elastic member of the present invention mounted inside the armrest.

FIG. 22 is a schematic view of the structure of a third elastic member according to the present invention.

FIG. 23 is another schematic view of the third elastic member of the present invention.

Fig. 24 is a schematic view of a third elastic member of the present invention installed inside a handrail.

FIG. 25 is a schematic view of a third tapered connector of the present invention.

FIG. 26 illustrates yet another structural schematic of the third tapered connector.

Fig. 27 is an exploded view of a third tapered connector of the present invention.

FIG. 28 is a schematic view of different sizes of the semicircular blocks of the third tapered coupler according to the present invention.

FIG. 29 is a view of a third tapered connector of the present invention in use.

FIG. 30 is a schematic view of the installation of the third tapered connector of the invention.

FIG. 31 is a schematic view of the seat portion of the present invention.

In the figure: 1. a backrest; 2. a seat portion; 3. chair legs; 4. a first elastic member; 5. an outer filler; 6. an inner filler; 7. a handrail; 11. an upper support rod; 12. a middle support rod; 13. a lower support bar; 14. a first headrest; 15. a second headrest; 16. an upper connecting piece; 17. a lower connecting piece; 18. a connecting belt; 19. a back board; 20. a backrest cone connector; 2010. a handrail tapered connection; 21. an elastic layer; 22. a floor layer; 23. a spring, 24, an elastic band; 31. an elastic telescopic rod; 32. supporting legs; 33. an elastic foot pad; 331. a bolt; 332. a nut; 333. a card; 334. a foot pad spring; 335. a foot pad connecting rod; 336. a cavity; 337. a rotating member; 338. a foot pad; 339. a non-slip mat; 3310. a foot pad mounting seat; 201. a conical column; 202. a bolt connection; 203. a conical spring; 204. a conical spring housing; 171. a rotating support; 172. a lower extension spring; 173a, a second connector; 173b, a third connecting piece; 174. a fixed support; 175. a lower extension spring connecting seat; 1710. adjusting the bolt; 1711. adjusting the spring; 1712. a lower support block; 1713. connecting a baffle plate; 1714. an upper support block with a hole; 164. an upper tension spring; 165. a first type of connector; 166. an upper extension spring connecting seat; 71. a third elastic member; 41. a first elastic supporting unit; 42. a second elastic supporting unit; 43. a third elastic supporting unit; 44. a fourth elastic supporting unit; 45. a first tensioning band; 46 second tensioning belt. 111. A first baffle plate; 112. a second baffle; 113. a third baffle plate; 8. a second elastic member; 81. a left elastic connection unit; 82. a right elastic connection unit; 83. a left elastic support unit; 84. a right elastic support unit; 85. an upper end elastic support unit; 86. a first elastic connection unit; 87. a second elastic connection unit; 88. a third tension belt; 89. a fourth tension band. 91. A conical jacket; 92. a conical inner sleeve; 93. a semicircular clamping block; 94. a connecting bolt; 95. a conical cylinder; 96. a spring plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the 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 embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 31, in an embodiment of the present invention, an assembled flexible sofa is characterized in that it includes: a backrest 1, a seat 2, chair legs 3 and armrests 7; the backrest 1 is provided with a plurality of sections of supporting rods, and connecting pieces are arranged among the sections of supporting rods for connection; the front surface of the backrest 1 is also provided with a plurality of back rests; conical connecting pieces are arranged among the backrest 1, the armrests 7 and the seat 2 for connection; an elastic telescopic rod 31 is arranged between the seat part 2 and the chair leg 3 for connection; the bottom of the chair leg 3 is provided with an elastic foot pad 33.

In the present invention, the structure of the backrest portion has various embodiments of connection assembly.

In embodiment 1, the backrest part is formed in an "S" shape, the bottom of the backrest plate 19 is connected to the floor layer 22, and the first baffle 111, the second baffle 112 and the third baffle 113 are fixed to the support rods; the first baffle 111, the second baffle 112 and the third baffle 113 are arranged at the front and the rear sides of the backboard 19 in a crossed manner, so as to provide a foundation support for the backboard 19. And the support bar of the back rest is divided into three sections, the support bars of the back rest are connected by the connecting pieces, each connecting piece can deflect and twist in the front and back direction and provide elastic support, so the shape of the back rest can be changed according to the shape of the spine of a user and can be changed along with the posture change of the user and the change of the position and the direction of the pressure on the back rest part, the back rest is clung to the body of the user all the time to provide more uniform support and protection, the back rest can adapt to the use of different users under different conditions, and better comfort and touch feeling can be provided under more using environments, in addition, the structure of the back rest part ensures that each section of support bar (the upper support bar 11, the middle support bar 12 and the lower support bar 13) has the effect of erecting the back of the user by. Better protects the back vertebra of the user, reduces the compression on the body, blood vessels and nerves of the user and accords with human engineering mechanics.

In embodiment 2, the bottom of the backrest board 19 is connected to the second baffle 112, the support rods of the backrest part are divided into an upper section and a lower section, three connecting members are arranged between the second baffle 112 and the first baffle 111 at equal intervals, the joint protection device is arranged outside the connecting members, the connecting members on the left side and the right side are respectively connected to the support rods on the upper section and the support rods on the lower section, and the connecting member in the middle part is connected to the second baffle 112 and the first baffle 111. Compared with embodiment 1, the connecting structure strengthens the elastic support at the lower part of the backrest, removes the effect of deflectable twisting at the upper part of the backrest, is not similar to embodiment 1 in comfort level, fit degree and protection effect, cannot perform multi-section deflection fitting, is more convenient to process and produce than embodiment 1, and has lower cost.

Elastic components are arranged inside the back cushion and the armrests; the elastic component is formed into a multilayer structure by bending, twisting and overlapping one or more spring steel wires; the elastic component can provide lasting and natural elastic force for the headrest and the armrests when being pressed by the body; the resilient member has a variety of different configurations.

Compared with the existing sofa or chair, the existing sofa or chair is mostly manufactured by plane elasticity and is far from adapting to complex body structures (bones, nerves, tendons, joints, blood vessels and muscles), and the elastic member of the invention has the advantages that the elastic member has different plane elasticity from the traditional one, can generate a three-dimensional elastic effect, provides different elastic supports for different parts of a human body, has the effect of weight dispersion and is more complex in ergonomic design. The elastic member can be widely applied to pillows such as throw pillows and back pillows and other furniture articles requiring elasticity such as chairs and sofas, and is not limited to the assembled elastic sofa chair.

In embodiment 1, the headrest is internally filled with an outer filler 5 and an air bag, and the air bag is internally filled with an inner filler 6 and a first elastic member 4; the back cushion is also divided into a first back cushion and a second back cushion; the first back cushion 14 and the second back cushion 15 are connected to the back board 19 through a connecting belt 18, elastic objects and air hoops are filled in the first back cushion 14 and the second back cushion 15, a first elastic component 4, an inner filler 6 and air are arranged in the air hoops, and the air hoops are made of materials with air holes.

The first elastic member 4 is composed of four elastic supporting units, the end of the first elastic supporting unit 41 is connected with the end of the fourth elastic supporting unit 44, and the first elastic supporting unit 41 is connected with one end generated by the spiral or crossing of the other end and the second elastic supporting unit 42 by the spiral or crossing downwards; the other end of the second elastic supporting unit 42 is connected with one end of the third elastic supporting unit 43; the other end of the third elastic support unit 43, which is formed by spiraling or crossing, is connected to the other end of the fourth elastic support unit 44, which is spiraling or crossing.

The inner part of the back cushion is designed to be a multilayer structure, so that direct contact between a user and the back board 19 or the elastic element is avoided, the outer layer filler 5 in the back cushion can be mixed and filled with soft elastic bodies such as memory cotton, duck down, sponge and the like, so that the soft feeling of the user when the user is rested is improved, the air in the inner layer is made of materials with air holes, the air in the air bag can conveniently enter and exit, the first elastic component 4 is fixed in the air bag and filled with air and part of the mixed inner filler 6, the first elastic component 4 can provide nearly permanent elasticity, the service life of the whole back cushion is prolonged, better elastic effect is provided, the air filled in the air bag can provide the most soft and natural elastic effect, and compared with other solid elastic bodies, the air has no resistance when moving, can effectually disperse the weight, embrace when receiving the extrusion at the air, the slow discharge of air provides more natural slow elastic effect, and when external pressure removed, elastic component can be rapid embrace the air and prop up and quick suction air and then resume the elasticity that the air was embraced fast, has the practicality more.

When a user applies pressure to the headrest, the outer filler 5 firstly performs a first layer of basic elastic buffering and supporting to provide a soft using effect for the user, air is removed after the air is held by the pressure to squeeze the inner filler 6 and the first elastic member, and the inner filler 6 and the first elastic member 4 are compressed and provide elasticity.

When a user twists and moves left and right, the first elastic supporting unit 41, the second elastic supporting unit 42, the third elastic supporting unit 43 and the fourth elastic supporting unit 44 of the first elastic member 4 in the air-tight structure correspondingly deform, when the user approaches the left, the left pressure is high, the pressure applied to the second elastic supporting unit 42 and the third elastic supporting unit 43 is higher, the compression deformation of the second elastic supporting unit 42 and the third elastic supporting unit is higher, the pressure applied to the first elastic supporting unit 41 and the fourth elastic supporting unit 44 is lower, the compression deformation is smaller, the whole first elastic member 4 forms elastic deformation with lower left and higher right, the left and right sides provide elastic supports with different sizes, the pressure change and difference of the user in different postures are aimed at, and corresponding pressure distribution is provided, the elasticity of the place with large pressure is also larger, so that the pressure of a user is dispersed to be elastically supported, and the elastic support is more comprehensive and has higher applicability.

When outside elasticity loses, the first elastic component that the steel wire was made will recover under the effect of elasticity to carry out corresponding deformation in the middle of the pillow of next pressure, provide corresponding elasticity dispersion pressure, let user's experience feel more natural soft. During normal use, each elastic supporting unit of the first elastic member 4 is subjected to different pressures to deform differently to provide different elastic forces for supporting.

At the junction of every elastic support unit, all there is certain sunken, fixes first tensioning belt 45 and second tensioning belt 46 on horizontal, two directions of indulging in the sunken department, and the tensioning belt has better elasticity, can provide fine elastic force for first elastic component 4 on horizontal, two directions of indulging, prevents the excessive bending and the deformation of first elastic component, improves the life of first elastic component 4. The first elastic member is less elastic when it has two or more formed coupling openings, and is most elastic as a whole when it has only one formed coupling opening. The first elastic member provides different front and rear elastic forces to the headrest, and the elasticity of the first elastic member can be changed after kneading, so that a user can adjust the elastic force of the first elastic member through kneading, and the first elastic member almost always has elasticity and has no permanent deformation. And the user also can extrude through the sunken of different elastic support unit junctions after using, and then comes the pressure of different positions on the different elastic support unit of manual regulation first elastic component 4 to elastic support unit to partly having out of shape carries out the recovery of elasticity, has more when satisfying different user groups's user demand near permanent elasticity effect, very big extension the life of whole back cushion.

The first elastic component can keep the space inside the air bag, and the use efficiency of the air bag is improved. These elastic members can enhance and maximize the elastic function of the existing elastic materials (cotton wool latex, etc.), and provide three-dimensional composite elastic effect in combination with air, sponge, etc., and the elastic members are stronger in elasticity and softer in use. When in contact, the elastic rocking chair can circumferentially rock forwards, backwards, leftwards and rightwards, reduce noise and body contact pressure, provide soft touch feeling, have a buffering effect on all parts contacted by the body, have soft touch feeling, provide optimal elasticity for the bent waist and the neck of the back of the body, and play a role in relieving fatigue.

The composite three-dimensional elastic also has a longer useful life than some of the prior elastomers used alone, such as doll sponges,in thatAfter 2-3 months of use, the shape of the elastic bodies can generate permanent deformation due to external pressure, the elastic effect is weakened, the elasticity disappears after 4-5 months, and the elasticity is rapidly weakened after three years of service life of the sponge. The elastic component of the invention is used by combining the air bag with some existing elastic bodies, and can obtain the elasticity which is softer, stronger and has longer service life than chemical cotton, natural cotton and sponge with lower cost.

In embodiment 2, the inside of the armrest is provided with the second elastic member 8, which has an upper end elastic support unit 85 that is bent outward, a left elastic connection unit 81 and a right elastic connection unit 82 connected to both sides of the upper end elastic support unit 85, a left elastic support unit 83 connected to the top of the left elastic connection unit 81, a right elastic support unit 84 connected to the top of the right elastic connection unit 82, a first elastic connection unit 86 connected to the lower side of the left elastic support unit 83, a second elastic connection unit 87 connected to the lower side of the right elastic support unit 84, and the first elastic connection unit connected to the second elastic connection unit 87. A third tension belt 88 is connected to the bottom of the upper end elastic support unit 85, and a fourth tension belt 89 is connected to the bottom of the left and right elastic connection units 81 and 82.

The second elastic member 8 can provide a more three-dimensional elastic effect, and has a unique elastic supporting effect in the front, rear, left, right, up and down directions, thereby being more three-dimensional and comprehensive.

When the pressure from the two sides is applied, the upper end elastic supporting unit 85 is squeezed, corresponding elastic support can be provided at the top of the second elastic member 8, the middle left elastic supporting unit 83 and the middle right elastic supporting unit 84 can be squeezed and approach each other, corresponding elastic support is provided, when the external pressure is increased, the left elastic supporting unit 83 and the right elastic supporting unit 84 can approach each other slowly and abut against each other finally, the elastic supporting force is the largest at the moment, the excessive bending and squeezing of the left elastic supporting unit 83 and the right elastic supporting unit 84 caused by the excessive external pressure can be effectively avoided, the protection measures are provided for the left elastic supporting unit 83 and the right elastic supporting unit 84, and the excessive bending damage of the second elastic member 8 is avoided.

When subjected to pressure from the front, the second elastic member 8 may again provide a very good distributed elastic force, when there is a front pressure, the upper elastic supporting unit 85 is compressed and extended to both sides to distribute the pressure, and the left and right elastic connecting units 81 and 82 are compressed inward to provide a maximum elastic supporting force, the middle left and right elastic supporting units 83 and 84 are front surfaces to receive the pressure, can be bent inward and the pressure can be dispersed, providing a more comprehensive and natural effect of dispersing the elastic force, reducing the pressure of the left and right elastic connection units 81 and 82, the use feeling of the user is more natural, the pressure of the human body is dispersed, the oppression of the body, blood vessels and nerves of the user due to overlarge local pressure is avoided, the health of the human body is protected, and the human body health protection device is more in line with the mechanical design of human engineering. The user can be through installing second kind elastic component on handrail or the inside suitable position of back cushion for laminating user's health, provides better elasticity protection, when the user of different height sizes such as the face height, short, fat, thin, can also manually adjust the position of second kind elastic component in handrail or the inside of back cushion, and then reach the most suitable most comfortable state of using next to the shin most.

In embodiment 3, a third elastic member 71 is provided inside the armrest, a top 711 of the third elastic member 71 is bent outward, tension bands 715 are connected to both sides of the top to provide elastic supporting force, a bent end 714 and a bent end 713 are bent to both sides of a bottom of the third elastic member 71, and the bent end 713 and the bent end 714 are connected by a multi-stage bent bending part 712 and the tension bands 716.

The bending sections 713, 741 and the top 711 are bent to provide a soft and three-dimensional elastic supporting effect for the user. In the absence of external pressure, the elastic force of the tension belts 715 and 716 is restored, thereby enhancing the utility of the third elastic member 71.

The middle bending part 712 with multiple bends provides lateral elastic support for the third elastic member 71, enhances the three-dimensional elastic effect of the third elastic member 71, and provides an internal supporting force for the third elastic member 71, thereby reducing the deformation degree of the third elastic member 71 in long-term use. The practicality and the service life of the third elastic member 71 are improved.

The bending elements 712 have different distances between each bending section, which can provide different amounts of elastic force, thereby providing a three-dimensional elastic effect.

The connecting piece main body is a connecting spring made of high-strength materials or a spirally bent steel wire; the connecting piece has a plurality of different appearance structures; and a joint protection device is also arranged outside the connecting piece.

The backrest of the conventional chair is kept in a straight or C-shaped fixed state at present, and if the conventional chair is used for a long time, not only the fatigue of the body is increased, but also the bending of the backrest is caused. However, in the embodiment of the present invention, each support portion of the backrest portion is connected by the connecting member and independently moved, thereby solving the problem of the fixed backrest of the conventional chair. In other words, the backrest part of the embodiment of the invention can adapt to the back of the user through multi-angle adjustment, changes along with the twisting of the user, provides elastic supporting force for the back of the user at any time, protects the back of the user, further greatly reduces the body fatigue of the user, can effectively prevent the shoulder, neck and lumbar disc from being damaged, can also greatly reduce the damage probability of the backrest of the chair, prolongs the service life of the chair, and has wider application range.

In example 1, the connecting spring of the first connecting member is a horizontal spring wire having two coils, and the upper and lower ends of the connecting spring are connected to the support rods. When receiving external pressure, the bracing piece is crooked to drive the first connecting piece crooked, and this coupling spring receives external pressure, produces the ascending elastic deformation of fore-and-aft direction to provide elasticity, when losing external pressure, this coupling spring drives the bracing piece and resets. The connecting spring with the structure has the best elastic force effect in the front-back direction, can provide the strongest elastic force in the front-back direction, and can bear larger external pressure.

In embodiment 2, the main body connecting spring of the second connecting member is a compact connecting spring having a rectangular or polygonal cross section and no gap between every two circles of springs, and the spring has a strong elastic force effect in the circumferential direction, can be bent in the circumferential directions of front, rear, left, right, etc., and provides a transverse elastic force, and can meet the use requirements under different conditions and adapt to more use environments.

The main body connecting spring of the second connecting member may also be a connecting spring having a gap between every two coils, which can be compressed in the up-down direction and provide an elastic support in the up-down direction, and can be bent in the circumferential directions such as front, rear, left, right, etc. and provide an elastic support, which can provide a more comprehensive elastic support effect, but the elastic effect in the circumferential direction is inferior to that of the compact type connecting spring.

In embodiment 3, the main body connection spring of the third connection member 173b is a compact type conical spring having a large middle portion and two small ends, and both ends of the third connection member 173b can be inserted into the middle support bar 12 and the lower support bar 13 and connected and fixed. The third connector has a certain activity space in the middle support rod 12 and the lower support rod 13, and also can perform circumferential shaking, the elastic effect of the third connecting piece 173b can be adjusted and controlled by adjusting the number of spring turns up and down of the third connecting piece 173b, when the number of spring turns is more, the shaking range of the third connecting piece 173b is larger, and when the number of spring turns is less, the shaking range of the third connecting piece 173b is smaller. Can meet different use effects and is not easy to break and damage.

The connecting piece carries out the segmentation to the bracing piece to play an elastic support's effect, compare in fixed knot structure's bracing piece, the bracing piece that connects through the connecting piece can have in the front, back, the bigger motion range in left and right direction, has stronger and more comprehensive elasticity effect, can let the back part of elasticity sofa chair twist along with the wrench movement of user back, hugs closely user's back, provides support and protection to user's back at all times.

The joint protection device comprises an extension spring and a bending protection device; the bending protection device is arranged at the front part or the rear part of the connecting piece and can limit and protect the connecting piece and the supporting rod at the upper end of the connecting piece when the connecting piece is pressed backwards; the bend relief devices have a variety of configurations.

When the joint protection device is not provided, the connecting piece cannot be fixed, the backrest part is easy to bend left, right, front and back, and the expected use purpose cannot be achieved.

In embodiment 1, when the user provides lateral or other pressure, the upper support rod 11 and the upper connecting member 16 deflect correspondingly and provide corresponding elastic supporting force, and the upper support rod 11 and the upper connecting member 16 reset under the elastic force of the upper extension spring when the external pressure is lost, so that the practicability is higher, and the provided elastic force is more comprehensive composite elastic force, and is suitable for elastic force requirements in different directions.

In embodiment 2, the second type 173a is bent and compressed when pressure is applied from the user, the lower extension spring 172 is extended, and at the same time, the rotary supporter 171 fixed to the middle support pole 12 is rotated with respect to the fixed supporter 174, and deflection of the middle support pole 12 is achieved.

The rotation angle of the rotation support 171 can be limited by the rotation slot on the fixed support 174, and the rotation slot abuts against the second connection member 173a, so that the second connection member 173a is prevented from being bent and deflected continuously, the deflection angle of the middle support rod 12 is further limited, the lower connection member 17 is protected, the damage caused by excessive deflection is avoided, and the service life of the lower connection member 17 is prolonged.

When losing external pressure, the lower extension spring 172 provides elasticity to pull back the middle support rod, and then restores to the throne the second connecting piece 173a, quickens the restoring speed of the second connecting piece 173a, disperses the external pressure received by the second connecting piece 173a, avoids the concentration of the external pressure, avoids the damage caused by the excessive bending of the second connecting piece 173a, and prolongs the service life of the second connecting piece 173 a.

In embodiment 3, the third joint protection device comprises an upper supporting block 1714 with holes and a lower supporting block 1712, the lower supporting block 1712 is fixed with a connecting block 1713 and the connecting block 1713 is fixed with an adjusting spring 1711, the upper end of the adjusting spring 1711 is also fixed with a connecting block 1713, meanwhile, the upper supporting block 1714 with holes is internally and threadedly connected with an adjusting bolt 1710, and the bottom end of the adjusting bolt 1710 is fixed on the connecting block 1712 on the upper part.

When the connecting piece is pressed from the front direction and the rear direction, the connecting piece is bent, the extension spring is extended, meanwhile, the adjusting spring 1711 is compressed and provides an opposite elastic support to disperse the pressure on the connecting piece and protect the connecting piece, and when the external pressure is lost, the connecting piece can accelerate to recover the elastic force under the action of the extension spring and the adjusting spring 1711. The user can adjust the elasticity size of control regulating spring 1711 through adjusting bolt 1710, and then comes the elasticity supporting effect that control regulating spring can provide and the dispersion effect of pressure and the protection dynamics to the connecting piece, is applicable to different suitable demands.

The seat part is divided into an elastic layer and a bottom plate layer; the bottom plate is connected with the elastic layer through a spring; the elastic layer comprises an outer frame and elastic materials uniformly distributed in the middle of the outer frame.

At present, the most used elastic bodies in the sofa and the chair seat are various chemical sponges, cotton wool and the like, and the existing elastic bodies are not environment-friendly enough and have higher cost. Utilize the spring to connect with low costs, environmental protection and energy saving in comparison, the spring still has the elasticity effect that can twist to circumference that the sponge does not possess, lets the elastic layer can twist along with the wrench movement of user's buttock, gives the different result of use of user. Meanwhile, the service life of the sponge, the jean cotton and the like is short, for example, after the jean cotton is used for two to three months, the appearance can be permanently deformed due to external pressure, the elastic effect is weakened, the elasticity disappears after four to five months, the elasticity of the sponge can be quickly weakened after the sponge is used for three years, and compared with the spring, the spring is more durable and powerful, the service life is longer, and the practicability is higher.

In the embodiment, the elastic layer 21 is provided with elastic bands 24 across the middle. Can provide more balanced and comprehensive elastic supporting effect for the buttocks of a user, and compared with the structures such as spring wires and the like, the elastic belt 24 has the advantages that the elastic force is less prone to deformation, the elastic force is more balanced, and the use feeling is more natural and comfortable. The below of elastic layer 21 is connected with the bottom plate layer through the spring, the use of cavernosum has been replaced, while more environmental protection, the cost is also lower, compare in the cavernosum simultaneously, when the user moves or twists on the side in the seat, the spring in relevant position is compressed by user's weight, and the seat slope, can let the user all can provide better comfort level and sense of touch and more comprehensive elasticity and health protection function when sitting on the elastic layer no matter what kind of angle, can let the user keep the position of sitting that is favorable to health, the back keeps the s type, and guide user's health to think the size.

The conical connector has a plurality of structures; the conical connecting piece can drive the backrest and the handrail to shake in multiple directions and at multiple angles

The existing mode of connecting the armrests or the backrest is to connect the armrests or the backrest through a chain joint, and the fixing method is complex, not firm and not easy to use. The shape of the link button is a plane, the link button is a three-dimensional conical connecting piece, the conical connecting piece is a stronger assembly mode than the link button, even if a small amount of specification errors exist, the link button is very easy to clamp, the effect of connecting and fixing is enhanced, and the link button is also a structure which is very easy to assemble,It is adjusted and fixed by weight, not by clips.

In one embodiment 1, the first conical connection member is a conical triangular or polygonal spring connection member (spring cap) and a conical column 201 inside the spring connection member 20, and is combined to form a connection body having a shaking action on both left and right sides.

The first conical connecting piece is sleeved with a conical column 201, a gap is reserved between the top of the conical column 201 and the top of the conical spring 203, and the conical column 201 is fixed on the bottom plate layer 22 through a bolt connecting piece 202.

First toper connecting piece can let 1 part of back and 7 parts of handrail carry out the deflection of certain degree for seat 2, for seat 2 provides bigger space scope, lets the user can be more comfortable work of following one's mind, but the deflection angle of back is bigger, and applicable scope is wider, uses more comfortable

The conical spring can provide more comprehensive elastic support along with different sizes of the deflection angles of the back or the armrest part, the elastic force provided by the conical spring 203 is larger when the deflection is larger, the conical spring 203 can drive the back and the armrest part to rebound and reset when external pressure is lost, the trouble of manual adjustment of a user is reduced, the manual adjustment is more practical, and the elastic support force with different sizes can be correspondingly provided according to different external pressures.

On the one hand, the height of the top of the conical column 201 in the conical spring 203 is lower than the highest height of the conical spring 203, and a gap exists between the top of the conical column 201 and the top of the conical spring 203, so that the conical column 201 in the conical spring 203 can provide internal supporting force for the conical spring 203 in the deflection process, the problem of separation caused by excessive deflection of the conical spring 203 is avoided, the back and the armrest can be tightly attached to a human body at any time, and the back and the armrest can not be separated from the support due to left-right swinging. On the other hand can prevent conical spring 203 because the elastic deformation that causes for a long time deflects in the middle of the use, can be very big reduction conical spring 203's deformability, improve whole device's life, more practical.

And compare and be circular shape conical spring 203 in the cross section, triangular prism design and polygonal cross section's conical spring 203 design has stronger elasticity and stability, and the spring can not produce the slip when putting into wherein corresponding support column, and through triangular pyramid formula design, the spring can seamlessly be put together, and the combination is more firm durable to when installing together with having elastic overcoat, can realize antiskid and elastic connection simultaneously.

When the conical spring 203 or the triangular spring or the polygonal spring and the supporting columns with corresponding shapes in the springs are made into corresponding male and female sockets, the springs can be installed without a complex installation process, and the blind or children can also carry out simple assembly, so that the practicability is high.

In embodiment 2, compared with embodiment 1, the conical spring 203 is externally sleeved with the conical spring sleeve 204, and the lower support rod 13 is connected to the conical spring sleeve, so that the conical spring 203 and the lower support rod are not welded and fixed, the difficulty in the production process is reduced, and the service life of the conical spring 203 is prolonged; a gap exists between the conical spring 203 and the conical column 201 in the circumferential direction and in the height direction, and the conical column 201 is fixed on the seat part through welding or bolts; the conical spring sleeve 204 and the conical spring 203 have gaps in the circumferential direction and the height, compared with embodiment 1, the structure enlarges the movable range of the conical connecting piece in the circumferential direction, and when the gaps at two positions are larger, the circumferential movement range of the conical connecting piece is larger; the conical outer sleeve 204 and the conical column 201 can effectively protect the conical spring 203 from deformation in an all-around manner. The user can also adjust the gap through the bolt connection 202 to adjust the spring effect that the tapered connection can provide. In particular, the inclination angle of the interior of the conical spring housing 204, the inclination angle of the conical spring 203 and the inclination angle of the conical column 201 are sequentially increased, so that the gap between every two conical spring housings is gradually increased from top to bottom, and the movable range of the conical connecting piece is also larger.

In embodiment 3, the top of the outer cone 91 is connected to the backrest or the armrest, the inner cone 92 is sleeved inside the outer cone, the spring strips 96 are uniformly distributed in the inner cone 92 along the circumferential direction, the inner cone 92 is made of an elastic soft material, the inner cone 93 is sleeved inside the inner cone, the bottom of the inner cone 93 is connected to the conical cylinder 94 through the connecting bolt, and the bottom of the conical cylinder is fixed to the floor layer of the seat 2.

When a user provides downward weight and pressure, the semicircular clamping block 93 is pressed into the conical inner sleeve 92 and extrudes the conical inner sleeve 92, so that the friction force is increased, and meanwhile, the semicircular clamping block can be clamped and fixed by the spring pieces which are uniformly distributed in the circumferential direction and is not easy to fall off.

The tapered inner sleeve 92 can be made of various elastic materials, and the tapered inner sleeve is inserted between the tapered outer sleeve and the semicircular clamping block, so that noise can be reduced, and the semicircular clamping block can be prevented from slipping and falling off. The conical inner sleeve enables the semicircular clamping block to swing left and right, so that the whole sitting feeling and the elasticity are softer and more natural.

When a user provides pressure in a lateral direction or other directions, the conical outer sleeve 91 and the back or armrest part connected with the conical outer sleeve 91 deflect, the semicircular clamping block 93 deflects inside the conical inner sleeve 92 and presses one or more spring pieces 96 in the deflection direction, the spring pieces 96 can provide corresponding supporting force after being pressed, and when the external pressure is lost, the semicircular clamping block 93 can rotate and reset under the action of the pressed spring pieces 96. Is more convenient.

The semicircular clamping blocks 93 with different sizes can be clamped into different depths, when the semicircular clamping blocks 93 are smaller, the semicircular clamping blocks 93 are inserted deeper, and the angle range which can be adjusted in a swinging mode is smaller; when semicircle fixture block 93 is great, it inserts shallowly, and is closer to the oral area comparatively, and the angle scope that the user can rock the regulation just also is big more, is fit for the crowd of different operation requirements and uses.

The conical inner sleeve 92 is made of elastic materials, so that the semicircular clamping block 93 can be prevented from being in direct contact with the conical outer sleeve 91, the friction loss in deflection is avoided, the operation of the whole device is smoother and more natural, and the noise generated by friction can be absorbed and reduced in the deflection process.

The user can adjust the height of semicircle fixture block 93 for circular cone cylinder 94 through connecting bolt 95, and then adjusts the height of toper endotheca 92 and toper overcoat 91, and indirect improvement the height of back and handrail, satisfy different height users' practical demand, more have the practicality.

The spring foot pad includes the callus on the sole mount pad, the callus on the sole mount pad is fixed in through the bolt fastening of inside cavity top surface the bottom of supporting legs, be fixed with the callus on the sole spring through card and nut in the inside cavity of callus on the sole mount pad, the lower extreme of callus on the sole spring is fixed with the callus on the sole connecting rod, the bottom of callus on the sole connecting rod is connected with the callus on the sole through rotating the piece, the callus on the sole bottom is equipped with the slipmat.

In an embodiment, the elastic foot pad 33 includes a foot pad mounting base 3310, the foot pad mounting base 3310 is fixed to the bottom of the supporting foot 32 by a bolt 331 on the top surface of an inner cavity, a foot pad spring 334 is fixed to the inner cavity of the foot pad mounting base 3310 by a clamping piece 333 and a nut 332, a foot pad connecting rod 335 is fixed to the lower end of the foot pad spring 334, a foot pad 338 is connected to the bottom of the foot pad connecting rod 335 by a rotating piece 337, and a non-slip pad 339 is arranged at the bottom of the foot pad 338.

When the elastic foot pad is attached to the foot of a chair or a sofa bed, the foot moves 1 mm, the upper part is buffered by the movement principle, and therefore elasticity is generated, shaking is generated, and the spine and all joints can move more freely. The small springs are wrapped with elastic and then secured under the chair legs using screws, adhesives or plug-in structures, which is the least expensive and most economical elastomer.

The elastic foot pad 33 can provide an upward elastic effect for the whole seat, the supporting foot 32 is pressed when the user sits down, then the foot pad mounting base 3310 and the foot pad spring 334 fixed by the clamping piece 333 and the nut 332 inside the foot pad mounting base 3310 are driven to press down, the rotating piece 337 and the anti-slip pad 339 on the foot pad 338 and the foot pad 338 side are pressed into the accommodating cavity 336, when the user leaves, the foot pad spring 334 resets, and the rotating piece 337 is extruded out of the accommodating cavity 336 to restore inside.

The foot pad mounting base 3310 and the foot pad connecting rod 335 are made of elastic materials, so that noise and abrasion of the foot pad spring 334 in the compression process are reduced while better elasticity is provided, and the foot pad mounting base is firmer and more durable and has longer service life.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.