CN213429250U

CN213429250U - Chair back feeding and fine-adjusting mechanism

Info

Publication number: CN213429250U
Application number: CN202021529163.6U
Authority: CN
Inventors: 张毓云; 唐彩云; 郑旦; 其他发明人请求不公开姓名
Original assignee: Yudou Shanghai Intelligent Technology Co ltd
Current assignee: Yudou Shanghai Intelligent Technology Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-06-15
Anticipated expiration: 2030-07-29

Abstract

The utility model discloses a back of the chair feeds and fine-tuning, include: a stool part and a backrest; the stool part is supported on the supporting legs through the upright posts; the bench portion includes arranged in bench casing: a frame; the framework includes: a handrail fixing part which extends towards the two sides of the stool part and is used for fixing the handrail, and a backrest fixing part which extends towards the rear side of the stool part and is used for fixing the backrest; the backrest fixing part is detachably assembled with the backrest; the backrest performs the forward and backward adjustment of the lumbar support in the leaning direction through the feeding assembly; the feeding assembly comprises a gasket, an elastic gasket, an aluminum piece and a stud; the aluminum piece comprises a columnar connecting end used for being installed on the backrest; a threaded hole for assembling the stud is formed in the axial direction of the aluminum piece; the pad and the elastic pad are overlapped and then fixed on the back of the waist rest; one end of the stud is pressed against the elastic gasket through the bolt pad overlapped on the elastic pad, the bolt end is fixedly connected to the back surface of the waist rest, and the other end of the stud is assembled in the threaded hole.

Description

Chair back feeding and fine-adjusting mechanism

Technical Field

The utility model relates to a seat structure field, especially the back of the chair feed and fine-tuning.

Background

An office and study chair is a piece of daily life furniture, in particular to a piece of seating furniture with a backrest, a seat and armrests. The traditional chair back is integrated with a seat cushion, the sitting depth of the chair is usually adjusted by operating an adjusting mechanism below the chair, and the adjustment is laborious and not humanized in the ergonomic aspect. The traditional chair back lacks flexibility, and the chair back can not tilt comfortably and is fun to sit. The user does not have good buffering when sitting down, resulting in poor sitting feeling.

In order to solve the above problems, some office chairs employ a cushion or a lumbar support having a memory function in order to increase comfort, and although some experiences can be improved, such a cushion or a lumbar support is mostly airtight, and discomfort may occur when the chair is seated for a long time. Therefore, in order to provide a chair with an orientation fine-tuning capability that can be finely varied according to sitting postures, a simple and feasible structure is needed to solve the problem.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is: the chair back feeding and fine-tuning mechanism solves the technical problem that a seat and a backrest on a chair can meet the requirements of structural support, structural connection and structural assembly and can generate a fine-tuning function according to slight change of sitting postures.

The technical scheme of the utility model is that: a chair back feed and fine adjustment mechanism for use with a variety of chairs having a chair back, comprising: a stool part and a backrest.

Sit bench portion and support on the supporting leg through the stand, sit bench portion including arranging in sitting bench casing: the mechanical frame is used for bearing and connecting.

The framework includes: the armrest fixing part extends towards the two sides of the sitting stool part and is used for fixing the armrest, and the backrest fixing part extends towards the rear side of the sitting stool part and is used for fixing the backrest.

A plurality of connecting holes are arranged on the backrest fixing part, and the backrest is detachably connected and installed with the backrest fixing part through fasteners. The backrest is bent upwards to form a back support, and the backrest has certain hardness, so that the backrest can be inclined and tilted and can also have the back support effect.

A lumbar support is arranged at the upper end of the backrest, and the lumbar support is arranged on the backrest through a feeding assembly. The waist rest of the feeding assembly can move back and forth in the leaning direction to achieve the fine adjustment effect.

The feeding assembly comprises an aluminum piece, a stud and a bolt pad.

The aluminum member is a cylindrical member including a cylindrical attachment end for mounting on the backrest. The chair is installed through the columnar connecting end and the backrest, the aim of waist rotation can be achieved due to the clamping connection of the columnar bodies, and interestingness can be increased when the chair is used as a child chair.

The aluminum piece is axially provided with a threaded hole for assembling the stud, the threaded hole is coaxial with the columnar connecting end, and the longer stud is generally assembled in the threaded hole. The front end of the stud is fixed to the shell of the lumbar support after assembling the gasket and the bolt pad, so that the leaning direction can be adjusted by rotating the lumbar support.

The fine adjustment mechanism can be arranged on the basis of the feeding assembly, and the fine adjustment mechanism can be arranged in two ways. One arrangement is between the aluminum and the lumbar support, achieved by spring washers. The other is arranged between the aluminum piece and the backrest and is realized by a damping piece.

Specifically, the method comprises the following steps:

the gasket and the elastic gasket are overlapped and then fixed on the back of the waist rest, one end of the stud presses the elastic gasket through the bolt pad overlapped on the elastic gasket, the bolt end is fixedly connected to the back of the waist rest, and the other end of the stud is assembled in the threaded hole.

The bullet gasket includes: the bolt pad is overlapped on the axial convex surface of the elastic gasket.

The spring washer includes an axial through hole and includes a boss on an inner wall of the through hole for defining an installation. And a notch matched with the boss is arranged in the shaft hole of the gasket and is used for corresponding installation and positioning locking.

The bolt pad comprises an axial square hole, and the stud comprises a square column part protruding from the center of the end face of the shaft. After the end part of the stud is fixed with the shell of the waist rest, the root part of the square column part supports against the bolt pad, so that the gasket and the elastic gasket are tightened, and the deformation of the elastic gasket generates rotary deformation taking the through hole of the elastic gasket as the center.

Screw holes are uniformly distributed on the gasket, the elastic gasket and the bolt pad, and the gasket, the elastic gasket and the bolt pad are arranged on the central position of the waist rest by connecting, fixing and feeding components.

The elastic pad is generally made of rubber, is not easy to age and can be adjusted according to the thickness.

The other one is as follows:

set up POM damping piece upwards at the connecting axle of aluminium part and back, the liner of metal gasket and rubber gasket is passed through to the both sides of POM damping piece, and it is fixed to the axial of the column link of aluminium part with POM tissue piece to recycle the screw on, ensures that POM and aluminium part are coaxial, increases the resistance of rotation department slightly, avoids leading to the fact damage or accident because the waist leans on to rotate at the excessive speed. At the same time, the POM damping element can also provide a weak deformation, so that a fine adjustment in the leaning direction is achieved.

The two modes can be selected alternatively, and certainly, the chair can be used simultaneously on the premise of reasonable cost so as to increase the comfort level of the chair.

The utility model has the advantages that:

1. the chair back can be subjected to self-adaptive fine adjustment tilting;

2. the waist rest is convenient to adjust the sitting depth in a connecting way;

3. the chair back can be rotated, so that the interestingness of the child chair is increased;

4. simple structure easily produces, and convenient assembling easily transports.

Drawings

The invention will be further described with reference to the following drawings and examples:

FIG. 1 is a first schematic assembly view of a chair back feed and fine adjustment mechanism;

FIG. 2 is a second schematic assembly view of the chair back feed and fine adjustment mechanism;

FIG. 3 is a view of a seat employing a seat back feed and fine adjustment mechanism;

wherein: 1. a feeding assembly; 2. a backrest; 3. a waist support; 11. a gasket; 12. a spring washer; 13. a bolt pad; 14. a stud; 15. an aluminum piece; 16. a large iron shim; 17. a medium iron shim; 18. a POM damping member; 19. a rubber gasket; 20. a screw; 21. A small iron shim.

Detailed Description

The utility model discloses a preferred embodiment 1:

a chair back feeding and fine-adjusting mechanism comprises a mechanism frame for bearing and connecting.

The framework includes: handrail fixed part, back fixed part. The handrail is installed on the handrail fixing part through the fastener, the plurality of connecting holes are arranged on the backrest fixing part, and the backrest 2 is installed in a separable connection mode through the fastener and the backrest fixing part.

The upper end of the backrest 2 is provided with the waist support 3, the waist support 3 is arranged on the backrest through the feeding assembly 1 in the center position, and the waist support sponge is a shaping sponge and is more comfortable than common sponge.

The feeding assembly 1 comprises an aluminium member 15, a stud 14, a bolt pad 13.

The pad 11 and the elastic pad 12 are overlapped and fixed on the back of the waist rest 3, the elastic pad 12 is generally made of rubber elastic pad, and can be finely adjusted according to the comfortable sitting posture of a person when the person sits down.

The aluminium member 15 is a cylindrical element comprising a cylindrical attachment end for mounting on the backrest 2. The installation is carried out through column link and back 2, can play the rotatory purpose of lumbar support 3 because of the joint of columnar body, can increase the interest when as children's seat.

The bullet pad 12 includes: the end face contacting the washer 11, the axial convex face contacting the bolt pad 13, and the axial convex face of the bolt pad 13 overlapped on the elastic washer 12.

The aluminum piece 15 is provided with a threaded hole for assembling the stud in the axial direction, the threaded hole is coaxial with the columnar connecting end, and the longer stud 14 is generally assembled in the threaded hole. The front end of the stud 14 is fixed to the housing of the lumbar support 3 after fitting the washer 11, the spring washer 12, and the bolt washer 13, so that feed adjustment in the reclining direction can be achieved by rotating the lumbar support.

One end of a stud 14 presses the elastic pad 12 through a bolt pad 13 overlapped on the elastic pad 12 and the bolt end is fixed to the back of the lumbar support 3, and the other end of the stud 14 is fitted into the threaded hole.

The bolt pad 13 includes a square hole in the axial direction, and the stud includes a square column portion protruding from the center of the end face of the shaft. After the end part of the stud is fixed with the shell of the waist rest 3, the root part of the square column part supports against the bolt pad 13, so that the gasket 11 and the elastic gasket 12 are tightened, and the rotation deformation taking the through hole as the center is generated according to the deformation of the elastic gasket 12 to achieve the self-adaptive fine adjustment effect.

The utility model discloses a preferred embodiment 2:

a chair back feeding and fine-adjusting mechanism is characterized in that a waist rest 3 is arranged at the upper end of a backrest 2, and the waist rest 3 is arranged on the backrest through a feeding assembly 1 at the center position of the waist rest.

Specifically, the feeding assembly 1 comprises an aluminum member 15, a stud 14, and a bolt pad 13.

One end of a stud 14 is clamped on the bolt pad 13, the bolt pad 13 is fastened on the back of the waist rest 3, and the other end of the stud 14 is assembled in a threaded hole of the aluminum piece 15 after being sleeved with a large iron gasket 16. The rear end of the aluminum member 15 is a columnar connection end, and a middle iron shim 17, a POM damping member 18, a rubber shim 19, a middle iron shim 17, and a small iron shim 21 are laminated in this order on this end. The set of components is finally fixed on the rear end of the aluminum piece through screws 20, which ensures that the POM is coaxial with the aluminum piece, slightly increases the resistance of the rotating position, and avoids the damage or accident caused by the over-fast rotation of the waist rest. At the same time, the POM damping element can also provide a weak deformation, so that a fine adjustment in the leaning direction is achieved.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical concepts of the present invention be covered by the claims of the present invention.

Claims

1. Chair back feeds and fine-tuning, includes: a stool part and a backrest; the stool part is supported on the supporting legs through the upright posts; the method is characterized in that: the stool part comprises a mechanism frame arranged in a stool shell, and the mechanism frame is used for bearing and connecting;

the mechanism frame includes: a handrail fixing part which extends towards the two sides of the stool part and is used for fixing the handrail, and a backrest fixing part which extends towards the rear side of the stool part and is used for fixing the backrest; the backrest fixing part is detachably assembled with the backrest; the backrest performs the forward and backward adjustment of the lumbar support in the leaning direction through the feeding assembly;

the feeding assembly comprises an aluminum piece and a stud; the aluminum piece comprises a columnar connecting end used for being installed on the backrest; a threaded hole for assembling the stud is formed in the axial direction of the aluminum piece; the aluminum piece is connected to the back surface of the waist rest through a stud; an elastic gasket which is arranged on the stud in a penetrating way is arranged between the aluminum piece and the back surface of the waist rest, and/or a POM damping piece is arranged between the connecting part of the aluminum piece and the back rest.

2. The chair back feed and fine adjustment mechanism of claim 1, wherein: the gasket and the elastic gasket are overlapped and then fixed on the back of the waist rest; one end of the stud is pressed against the elastic gasket through the bolt pad overlapped on the elastic pad, the bolt end is fixedly connected to the back surface of the waist rest, and the other end of the stud is assembled in the threaded hole.

3. The chair back feed and fine adjustment mechanism of claim 1, wherein: and the POM damping part and the gasket are arranged in the axial direction of the columnar connecting end of the aluminum part.

4. The chair back feed and fine adjustment mechanism of claim 1, wherein: the bullet pad includes: the end face is in contact with the gasket, and the axial convex face is in contact with the bolt pad; the spring washer includes an axial through hole, and a boss for defining an installation is included on an inner wall of the through hole.

5. The chair back feed and fine adjustment mechanism of claim 2, wherein: the bolt pad comprises an axial square hole, and the stud comprises a square column part with a central bulge on the end face of the shaft.

6. The chair back feed and fine adjustment mechanism of claim 1, wherein: and screw holes are uniformly distributed on the gasket, the elastic gasket and the bolt pad.

7. The chair back feed and fine adjustment mechanism of claim 6, wherein: the feeding assembly is mounted on the central position of the waist support.

8. The chair back feed and fine adjustment mechanism of claim 4, wherein: the bolt pad is overlapped on the axial convex surface of the elastic gasket.