阅读说明：本技术 一种椅架 (Chair frame ) 是由 张世洪 王帅帅 于 2021-07-06 设计创作，主要内容包括：本发明公开了一种椅架,本发明技术方案省去基座,底座设置于地面上,椅座与底座铰接,驱动装置一端与所述椅座连接,另一端与所述底座连接,驱动装置与所述椅座的连接点为支点A,驱动装置伸长或缩短,使支点A以椅座1与底座的连接点为圆心做圆弧运动,使得支点A相对地面在水平和竖直方向产生位移变化,以使椅座倒背或直立。本发明实施例所述的技术方案,综合考虑空间利用率、成本控制以及结构简化等因素,采用较简单的结构方案,实现背架的角度调节和零重力功能。也就是说,本发明实施例通过结构创新,采用较简单的结构方案实现整机近靠墙的倒背调节,整体结构简单,降低产品加工成本,降低产品材料成本,简化结构组装成本低廉。(The invention discloses a chair frame, which omits a base, wherein the base is arranged on the ground, a chair seat is hinged with the base, one end of a driving device is connected with the chair seat, the other end of the driving device is connected with the base, the connecting point of the driving device and the chair seat is a fulcrum A, the driving device extends or shortens, the fulcrum A makes circular arc motion by taking the connecting point of the chair seat 1 and the base as the circle center, and the fulcrum A generates displacement change in the horizontal and vertical directions relative to the ground so as to enable the chair seat to be inverted or upright. According to the technical scheme, factors such as space utilization rate, cost control and structure simplification are comprehensively considered, and a simpler structural scheme is adopted to realize the angle adjustment and zero gravity functions of the back frame. That is to say, the embodiment of the invention realizes the back-down adjustment of the whole machine close to the wall by adopting a simpler structural scheme through structural innovation, has a simple overall structure, reduces the product processing cost, reduces the product material cost, simplifies the structure and has low assembly cost.)

1. A chair frame is characterized by comprising a chair seat, a base and a driving device, wherein the chair seat is hinged on the base, one end of the driving device is connected with the chair seat, and the other end of the driving device is connected with the base;

the connecting point of the driving device and the chair seat is a fulcrum, and the fulcrum and the connecting point of the chair seat and the base are arranged at intervals;

the driving device drives the seat to enable the fulcrum to do circular arc motion by taking the connecting point of the seat and the base as a circle center, so that the fulcrum generates displacement change in the horizontal and vertical directions relative to the ground to enable the seat to be inverted or upright.

2. The chair frame according to claim 1, wherein said base comprises a horizontal bar and an upright bar, said horizontal bar being placed on the ground, one end of said horizontal bar being angularly fixed to one end of said upright bar, the other end of said upright bar being hinged to said seat.

3. A chair frame according to claim 2, wherein the drive means is spaced from the upright by the horizontal bar such that the centre of gravity of the seat is located between the drive means and the upright.

4. The chair frame according to claim 1, wherein the driving means is a push rod, one end of the push rod is hinged with the chair seat, the other end of the push rod is hinged with the base, and the push rod is contracted or extended to enable the chair seat to be backed or erected.

5. The chair frame according to claim 1, wherein said drive means is a sector gear assembly; the fan-shaped tooth assembly comprises a gear, fan-shaped teeth and a motor, a first fixing seat and a second fixing seat are arranged on the base, the gear is fixed on the first fixing seat through a pin shaft, the fan-shaped teeth are fixed on the second fixing seat through a pin shaft, the gear is meshed with the fan-shaped teeth, the motor is connected with the gear, and one end of the sector of each fan-shaped tooth is connected with the chair seat; the motor drives the gear to rotate, and the gear drives the sector gear to rotate, so that the chair seat is inverted or upright.

6. The chair frame according to claim 5, wherein the chair seat is further provided with an ear seat, and the ear seat is connected with one end of the sector face of the sector-shaped tooth.

7. The chair frame according to claim 1, wherein said drive means is an arcuate tooth assembly; the arc-shaped tooth assembly comprises a second gear, arc-shaped teeth and a motor, the arc-shaped teeth are fixedly arranged on the base, the second gear is meshed with the arc-shaped teeth, the motor is fixedly arranged on the chair frame, and a worm of the motor is meshed with the second gear; the meshing position of the second gear and the arc-shaped teeth is a fulcrum A;

the motor drives the second gear to rotate, the second gear rolls towards the direction of the seat or the direction of the ground in the arc-shaped teeth, so that the fulcrum A generates displacement change in the horizontal and vertical directions relative to the ground, and the seat is enabled to be inverted or upright.

Technical Field

The invention relates to the technical field of massage, in particular to a chair frame.

Background

When the angle of the backrest or the zero gravity function of the massage chair on the market at the present stage is adjusted, the massage chair mostly slides in the seat frame guide rail through the back frame, and then is realized by adopting a four-bar mechanism.

In addition, most of the existing massage chairs adopt seat frames for supporting and fixing back frames, and have two main defects, namely, the structure is complex, the materials are more, and the material cost and the labor cost are increased; the other point is that the seat frame needs an injection molding part to shield the decoration, so that the investment of the mold and the material cost are increased. In view of this, the present application is specifically made.

Disclosure of Invention

The invention provides a chair frame aiming at the defects of the prior art, thereby solving the problems that the structure of the prior massage chair frame is complex, the material consumption is more, the material and labor cost is higher, and the seat frame needs an injection molding part to shield and decorate, so that the mold investment and the material cost are increased.

The invention provides a chair frame which comprises a chair seat, a base and a driving device, wherein the chair seat is hinged on the base, one end of the driving device is connected with the chair seat, and the other end of the driving device is connected with the base;

the connecting point of the driving device and the chair seat is a fulcrum, and the fulcrum and the connecting point of the chair seat and the base are arranged at intervals;

the driving device drives the seat to enable the fulcrum to do circular arc motion by taking the connecting point of the seat and the base as a circle center, so that the fulcrum generates displacement change in the horizontal and vertical directions relative to the ground to enable the seat to be inverted or upright.

By adopting the technical scheme, the invention can obtain the following technical effects: compared with the prior art, the technical scheme of the invention is that a base is omitted, the base is arranged on the ground, the seat is hinged with the base, one end of a driving device is connected with the seat, the other end of the driving device is connected with the base, the connecting point of the driving device and the seat is a fulcrum A, the driving device extends or shortens, the fulcrum A makes circular arc motion by taking the connecting point of the seat 1 and the base as a circle center, and the fulcrum A generates displacement change in the horizontal and vertical directions relative to the ground so as to enable the seat to be inverted or upright. According to the technical scheme, factors such as space utilization rate, cost control and structure simplification are comprehensively considered, and a simpler structural scheme is adopted to realize the angle adjustment and zero gravity functions of the back frame. That is to say, the embodiment of the invention realizes the back-down adjustment of the whole machine close to the wall by adopting a simpler structural scheme through structural innovation, has simple integral structure, reduces the processing cost of products, reduces the material cost of the products, simplifies the structure and is assembled with low cost.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view illustrating a chair frame in an upright state according to an embodiment of the present invention;

FIG. 2 is a schematic structural view illustrating a back-inverted state of the chair frame shown in FIG. 1;

FIGS. 3 and 4 are schematic views showing the construction of the upright and inverted back of the alternative drive arrangement of FIG. 1;

fig. 5 and 6 are schematic views showing the structure of the upright and inverted back of the alternative driving device of fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the 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. 1-6, a detailed description is given of a chair frame provided by an embodiment of the present invention, the chair frame includes a chair seat 1, a base 2, and a driving device 3, the chair seat 1 is hinged to the base 2, one end of the driving device 3 is connected to the chair seat 1, and the other end is connected to the base 2;

the connection point of the driving device 3 and the seat 1 is a fulcrum A, and the fulcrum A and the connection point of the seat 1 and the base 2 are arranged at intervals;

the driving device 3 drives the seat 1 to make the pivot a do circular arc motion with the connection point of the seat 1 and the base 2 as the center of circle, so that the pivot a generates displacement change in the horizontal and vertical directions relative to the ground, and the seat 1 is inverted or upright.

That is to say, the technical scheme of the invention omits a base, the base is arranged on the ground, the seat is hinged with the base, one end of a driving device is connected with the seat, the other end of the driving device is connected with the base, the connecting point of the driving device and the seat is a fulcrum A, the driving device extends or shortens, the fulcrum A makes circular arc motion by taking the connecting point of the seat 1 and the base as a circle center, and the fulcrum A generates displacement change in the horizontal and vertical directions relative to the ground so as to enable the seat to be inverted or upright. According to the technical scheme, factors such as space utilization rate, cost control and structure simplification are comprehensively considered, and a simpler structural scheme is adopted to realize the angle adjustment and zero gravity functions of the back frame. That is to say, the embodiment of the invention realizes the back-down adjustment of the whole machine close to the wall by adopting a simpler structural scheme through structural innovation, has simple integral structure, reduces the processing cost of products, reduces the material cost of the products, simplifies the structure and is assembled with low cost.

Specifically, as shown in fig. 1 and 2, it can be seen that the positions and angles of the pivot a, the seat 1 and the base are changed in the process of inverting the back of the chair frame, so as to realize the angle adjustment and zero gravity function of the back frame. It should be noted that the back-leaning state means that the chair frame is in a zero gravity state, and the standing state means that the chair frame is in a sitting posture state, and the specific angle is not limited.

Further, in one example, as shown in fig. 2, the base 2 comprises a horizontal rod 21 and an upright rod 22, the horizontal rod 21 is placed on the ground, one end of the horizontal rod 21 is fixed with one end of the upright rod 22 at an angle, and the other end of the upright rod 22 is hinged with the seat 1.

Further, in one example, as shown in fig. 2, the driving device 3 and the upright 22 are spaced apart from each other on the horizontal bar 21, so that the center of gravity of the seat 1 is located between the driving device 3 and the upright 22.

Specifically, the angle between the vertical rod 22 and the horizontal rod 21 is within the range of 0-180 degrees, and the interval between the driving device 3 and the vertical rod 22 ensures that the center of gravity of the seat 1 in a sitting posture or a lying posture is located between the driving device 3 and the vertical rod 22, so as to ensure the stability of the whole chair frame in the seat posture adjustment process.

Further, in one example, as shown in fig. 2, the driving device 3 is a push rod, one end of the push rod is hinged with the seat 1, and the other end of the push rod is hinged with the base 2, and the push rod is contracted or extended to enable the seat 1 to be backed or erected. The embodiment of the invention realizes the back-turning adjustment of the whole machine close to the wall by adopting a simpler structural scheme through structural innovation, has simple integral structure, reduces the processing cost of products, reduces the material cost of the products, simplifies the structure and is low in assembly cost.

Further, as another executable solution, as shown in fig. 3 and 4, the driving means 3 is a sector gear assembly; the sector gear assembly comprises a gear 31, sector teeth 32 and a motor 33, a first fixed seat 23 and a second fixed seat 24 are arranged on the base 2, the gear 31 is fixed on the first fixed seat 23 through a pin shaft, the sector teeth 32 are fixed on the second fixed seat 24 through a pin shaft, the gear 31 is meshed with the sector teeth 32, the motor 33 is connected with the gear 31, and one end of the sector face of the sector teeth 32 is connected with the seat 1; the motor 33 drives the gear 31 to rotate, and the gear 31 drives the sector gear 32 to rotate, so that the seat 1 is inverted or upright.

Specifically, one end of the sector gear 32 abuts against the seat 1, a contact point of the abutment is a fulcrum a, the motor 33 drives the gear 31 to rotate, so that the gear 31 drives the sector gear to rotate towards the direction of the chair frame or towards the direction of the ground, and the fulcrum a generates displacement change in the horizontal and vertical directions relative to the ground, so that the seat 1 is inverted or upright.

Further, as another executable solution, as shown in fig. 3 and 4, since one end of the sector-shaped teeth 32 abuts against the seat 1, the contact point of the abutment is the fulcrum a, the contact point rubs on the seat 1, and in order to protect the seat 1, an ear seat 11 may be further provided on the seat, and the ear seat 11 is connected with one end of the sector-shaped teeth 32. Therefore, the friction seat 1 can be avoided, the maintenance and the replacement are convenient, the maintenance cost is further reduced, and the maintenance efficiency is improved.

Further, as another executable aspect, as shown in fig. 5-6, the driving means is an arcuate tooth assembly; the arc-shaped tooth assembly comprises a second gear 41, arc-shaped teeth 42 and a motor (not shown in the figure), the arc-shaped teeth 42 are fixedly arranged on the base 2, the second gear 41 is meshed with the arc-shaped teeth 42, the motor is fixedly arranged on the chair frame 1, and a worm of the motor is meshed with the second gear 41; the meshing position of the second gear 41 and the arc-shaped teeth 42 is a fulcrum A;

the motor drives the second gear 41 to rotate, and the second gear 41 rolls in the direction of the seat 1 or the direction of the ground in the arc-shaped teeth 42, so that the fulcrum a is displaced and changed in the horizontal and vertical directions relative to the ground, and the seat 1 is enabled to be inverted or upright.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.