CN215776727U

CN215776727U - Stay-supported chair back adjusting mechanism

Info

Publication number: CN215776727U
Application number: CN202120424926.9U
Authority: CN
Inventors: 陈远春; 吴书平
Original assignee: Bock Precision Components Guangdong Co ltd
Current assignee: Bock Precision Components Guangdong Co ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2022-02-11
Anticipated expiration: 2031-02-26

Abstract

The utility model discloses a stay-supported chair back adjusting mechanism which comprises a chair seat and a chair back, wherein an adjusting mechanism for adjusting the angle of the chair back is arranged between the chair seat and the chair back; the adjusting mechanism comprises a clamping tooth piece and a clamping groove piece; the latch piece is provided with a latch, one side of the latch piece is connected with an elastic reset piece, and the other side of the latch piece is provided with a pull wire; and the pull wire is led out of the chair seat; the clamping groove piece is provided with a plurality of clamping grooves which are arranged at intervals up and down, and each clamping groove is matched with the clamping tooth; pulling the pull wire to enable the latch of the latch member to be matched and locked with any slot of the slot member; or the latch of the latch member and the slot of the slot member can be unlocked by loosening the pull wire. So, through designing a back of the chair adjustment mechanism, adopt the mode of acting as go-between to control the inclination of the back of the chair, will act as go-between and lead to the base outside, it has the advantage that uses spare part few, the assembly is simple to reach, act as go-between can lead to the base outside so that the staff operates the advantage.

Description

Stay-supported chair back adjusting mechanism

Technical Field

The utility model relates to the technical field of chair back adjusting mechanisms, in particular to a stay wire type chair back adjusting mechanism.

Background

The existing office chair generally realizes the angle adjustment of the chair back by driving a chair back adjusting mechanism at the bottom of the chair through the rotation of a handle or the pulling of the handle; generally, the chair back adjusting mechanism also comprises a plurality of metal rods and gears, and a corresponding avoidance hole is arranged on a shell of a chair base for a handle to pass through; therefore, the defects of more assembling parts, more assembling steps and long assembling time exist; and a drawback that it is not easy for some users to handle.

Therefore, a new technical solution is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, the main objective of the present invention is to provide a pull-cord type chair back adjusting mechanism, which is designed to control the tilt angle of the chair back by using a pull cord, so as to lead the pull cord to the outside of the base, and has the advantages of less parts and simple assembly, and the pull cord can be led to the outside of the base for manual operation.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a pull-wire type chair back adjusting mechanism comprises a chair seat and a chair back which is rotatably connected with the chair seat, wherein an adjusting mechanism for adjusting the angle of the chair back is arranged between the chair seat and the chair back; wherein:

the adjusting mechanism comprises a clamping tooth piece and a clamping groove piece; the clamping tooth piece can be arranged on the chair seat in a front-back displacement mode, and the clamping groove piece is arranged on the chair back and can move up and down relative to the chair seat;

the clamping tooth piece is provided with a clamping tooth, one side of the clamping tooth piece is connected with an elastic reset piece, and the other side of the clamping tooth piece is provided with a pull wire; and the pull wire is led out of the chair seat;

the clamping groove piece is provided with a plurality of clamping grooves which are arranged at intervals up and down, and each clamping groove is matched with the clamping tooth;

pulling the pull wire to enable the latch of the latch member to be matched and locked with any slot of the slot member; or the latch of the latch member and the slot of the slot member can be unlocked by loosening the pull wire.

As a preferred scheme, the latch piece is fan-shaped, the left side of the latch piece is provided with a vertically through pivot hole, the seat is provided with a vertically arranged pivot shaft, the pivot hole is adapted to the pivot shaft so that the latch piece can be rotatably installed on the seat, and the latch is arranged on the arc edge on the right side of the latch piece.

As a preferred scheme, the latch piece is provided with a limiting groove, and the seat is provided with a limiting column and is positioned in the limiting groove; when the latch member rotates, the limit column limits the maximum rotation angle of the latch member in forward rotation and reverse rotation.

As a preferable scheme, the elastic reset piece is a reset spring, one end of the elastic reset piece is connected to the rear side of the latch piece, and the other end of the elastic reset piece is connected to the seat so as to provide reset pulling force for the reverse rotation of the latch piece;

one end of the pull wire is connected to the front side of the clamping tooth piece, and the other end of the pull wire extends out of the chair seat.

Preferably, the other end of the pull wire is provided with a pull ring.

As a preferred scheme, the clamping groove piece is arc-shaped, the clamping groove is formed in the left side of the clamping groove piece, and the right side of the clamping groove piece is an arc-shaped surface and is connected with the chair back.

Preferably, a first horizontal plane horizontally extends towards the left side from the upper end of the arc-shaped surface, a first vertical plane downwardly extends from the left end of the first horizontal plane, the arc-shaped surface and the first horizontal plane are formed into a first positioning part, and the first horizontal plane and the first vertical plane are connected through a smooth curved surface;

the chair back is provided with a first positioning groove matched with the first positioning part;

the lower end of the arc-shaped surface extends to the left lower side to form a first inclined surface, the left end of the first inclined surface extends upwards to form a second vertical surface, a second positioning part is formed by the lower end of the arc-shaped surface, the first inclined surface and the second vertical surface are connected through smooth and smooth curved surfaces;

the chair back is provided with a second positioning groove matched with the second positioning portion, a connecting hole is formed in the lower side of the second positioning groove, a screw is connected into the connecting hole, and the screw is locked on the vertical surface of the second.

Preferably, the right side of the latch has an upper guide slope and a lower guide slope.

Preferably, the slot member has three slots; when the clamping groove at the lowest side is matched with the clamping teeth, the chair back is horizontally arranged;

when the uppermost clamping groove of the clamping groove piece is matched with the clamping teeth, the chair back is arranged at an angle of 40 degrees towards the right lower side.

Compared with the prior art, the chair has obvious advantages and beneficial effects, and particularly, according to the technical scheme, the chair back adjusting mechanism is designed, the inclination angle of the chair back is controlled by adopting a pull wire mode, the pull wire is led out of the base, and the chair has the advantages of few used parts and simplicity in assembly, and the pull wire can be led out of the base so as to be convenient for manual operation;

secondly, the design of latch spare and draw-in groove spare is comparatively simple, and in the accommodation process, because the ingenious cooperation each other of latch spare and draw-in groove spare for accommodation process is smooth and easy, does not block the stagnation.

To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is an assembled perspective view of an embodiment of the present invention;

FIG. 2 is an exploded view of an embodiment of the present invention;

FIG. 3 is a cross-sectional view of an embodiment of the present invention;

FIG. 4 is an enlarged fragmentary view of FIG. 3;

FIG. 5 is a partial exploded view of an embodiment of the present invention;

FIG. 6 is an enlarged partial view of FIG. 5;

fig. 7 is another partially exploded view of an embodiment of the present invention.

The attached drawings indicate the following:

100. chair seat 101, pin joint axle

102. Limiting column 200 and chair back

10. Latch member 11, latch

111. Upper guide slope 112, lower guide slope

12. Pivoting hole 13 and limiting groove

14. First mounting part 15, second mounting part

20. Slot part 21 and slot

22. Arc-shaped surface 221 and first horizontal surface

222. First vertical surface 223, first inclined surface

224. Second vertical surface 30, elastic restoring member

40. And pulling a wire.

Detailed Description

Referring to fig. 1 to 7, specific structures of embodiments of the present invention are shown.

A pull-string type chair back 200 adjusting mechanism comprises a chair seat 100 and a chair back 200 which is rotatably connected with the chair seat 100, wherein an adjusting mechanism for adjusting the angle of the chair back 200 is arranged between the chair seat 100 and the chair back 200; wherein:

the adjusting mechanism comprises a clamping tooth part 10 and a clamping groove part 20; the latch member 10 is mounted on the seat 100 in a front-back displacement manner, and the slot member 20 is mounted on the backrest 200 and can move up and down relative to the seat 100;

the latch member 10 has a latch 11, and one side of the latch member 10 is connected with an elastic reset member 30, and the other side is provided with a pull wire 40; and the pull wire 40 is led out of the chair seat 100;

the slot member 20 has a plurality of slots 21 arranged at intervals up and down, and each slot 21 is matched with the latch 11;

pulling the pull wire 40 to make the latch 11 of the latch member 10 cooperate and lock with any slot 21 of the slot member 20; alternatively, the latch 11 of the latch member 10 may be unlocked from the latch slot 21 of the latch member 20 by releasing the pull wire 40.

Here, what is to be supplemented is: in the prior art, handle type adjustment is usually adopted, so that an avoidance through hole for mounting a handle piece needs to be reserved on the side wall of the seat 100, and an avoidance position for the handle to move is reserved in the seat 100; the pull-string type chair back adjusting mechanism of the embodiment can directly lead the pull string 40 to the outside of the chair seat 100 from the upper side of the chair seat 100 (generally, the upper side cover plate of the chair seat 100 adopts a hollow structure, and the pull string 40 directly penetrates out of the hollow position).

Specifically, the method comprises the following steps: the latch member 10 is fan-shaped, and the left side thereof has a pivot hole 12 that runs through from top to bottom, the seat 100 has a pivot axle 101 that is vertically arranged, the pivot hole 12 is adapted to the pivot axle 101 so that the latch member 10 can be rotatably installed on the seat 100, and the latch 11 is arranged on the arc edge on the right side of the latch member 10.

Preferably, the latch member 10 has a limiting groove 13, and the seat 100 has a limiting post 102 and is located in the limiting groove 13; when the latch member 10 rotates, the limit post 102 limits the maximum rotation angle of the latch member 10 in the forward direction and the reverse direction.

Specifically, the elastic restoring member 30 is a restoring spring, one end of which is connected to the rear side of the latch member 10, and the other end of which is connected to the seat 100 to provide a restoring pulling force for the reverse rotation of the latch member 10; correspondingly, the latch member 10 is provided with a first mounting portion 14 connected with a return spring;

one end of the pull wire 40 is connected to the front side of the latch member 10, and correspondingly, the latch member 10 is provided with a second mounting portion 15 connected with the pull wire 40; and the other end extends out of the seat 100. Preferably, the other end of the pulling wire 40 is provided with a pulling ring, so that the adjustment operation of the user is facilitated.

Further, the slot member 20 is arc-shaped, the slot 21 is disposed on the left side of the slot member 20, and the right side of the slot member 20 is arc-shaped 22 and is connected to the chair back 200.

Specifically, a first horizontal plane 221 extends horizontally from the upper end of the arc-shaped plane 22 to the left, a first vertical plane 222 extends downward from the left end of the first horizontal plane 221, a first positioning portion is formed around the first horizontal plane 221, and the first horizontal plane 221 and the first vertical plane 222 are connected through a smooth curved surface between the upper end of the arc-shaped plane 22 and the first horizontal plane 221;

the chair back 200 is provided with a first positioning groove matched with the first positioning part;

a first inclined surface 223 extends from the lower end of the arc-shaped surface 22 to the lower left side, a second vertical surface 224 extends from the left end of the first inclined surface 223 to the upper side, a second positioning part is formed around the first and second inclined surfaces 223, and the lower end of the arc-shaped surface 22 is connected with the first inclined surface 223 and the first inclined surface 223 is connected with the second vertical surface 224 through smooth curved surfaces;

the chair back 200 is provided with a second positioning groove matched with the second positioning portion, a connecting hole is formed in the lower side of the second positioning groove, a screw is connected into the connecting hole, and the screw is locked on the second vertical surface 224.

Preferably, the right side of the latch 11 has an upper guide inclined surface 111 and a lower guide inclined surface 112, and the upper guide inclined surface 111 and the lower guide inclined surface 112 are arranged, so that the adjusting mechanism is smooth in the adjusting process and is not blocked.

Preferably, the card slot member 20 has three card slots 21; when the lowest clamping groove 21 is matched with the clamping tooth 11, the chair back 200 is horizontally arranged;

when the uppermost engaging groove 21 of the engaging groove member 20 is engaged with the engaging tooth 11, the seat back 200 is arranged at an angle of 40 degrees toward the lower right. Generally, the backrest 200 is connected with a backrest vertically, the use requirements of modern people can be met by designing the inclination angles of the three backrests and setting the maximum inclination angle to be 40 degrees, and certainly, during production, a plurality of clamping grooves 21 can be additionally arranged according to the requirements of customers, and the maximum inclination angle is changed to be 40 degrees and set to be other angles.

The design of the utility model is characterized in that the chair back adjusting mechanism is mainly designed, the inclination angle of the chair back is controlled by adopting a pull wire mode, the pull wire is led out of the base, the chair back adjusting mechanism has the advantages of less used parts and simple assembly, and the pull wire can be led out of the base so as to be convenient for manual operation;

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.

Claims

1. A stay wire type chair back adjusting mechanism is characterized in that: the chair comprises a chair seat and a chair back which is rotatably connected with the chair seat, wherein an adjusting mechanism for adjusting the angle of the chair back is arranged between the chair seat and the chair back; wherein:

2. The pull-string chair back adjustment mechanism according to claim 1, wherein: the latch piece is fan-shaped, and its left side has the pin joint hole that link up from top to bottom, the seat support has vertical arrangement's pin joint axle, pin joint hole adaptation is in the pin joint axle so that latch piece is rotatable to be installed in the seat support, the latch sets up on the arc edge on latch piece right side.

3. The pull-string chair back adjustment mechanism according to claim 2, wherein: the clamping tooth piece is provided with a limiting groove, and the seat is provided with a limiting column and is positioned in the limiting groove; when the latch member rotates, the limit column limits the maximum rotation angle of the latch member in forward rotation and reverse rotation.

4. The pull-string chair back adjustment mechanism according to claim 2, wherein: the elastic reset piece is a reset spring, one end of the elastic reset piece is connected to the rear side of the latch piece, and the other end of the elastic reset piece is connected to the chair seat to provide reset pulling force for the reverse rotation of the latch piece;

5. The pull-string chair back adjustment mechanism according to claim 4, wherein: and the other end of the pull wire is provided with a pull ring.

6. The pull-string chair back adjustment mechanism according to claim 1, wherein: the clamping groove piece is arc-shaped, the clamping groove is formed in the left side of the clamping groove piece, and the right side of the clamping groove piece is an arc-shaped surface and is connected with the chair back.

7. The pull-string chair back adjustment mechanism according to claim 6, wherein: a first horizontal plane horizontally extends towards the left side from the upper end of the arc-shaped surface, a first vertical plane downwardly extends from the left end of the first horizontal plane, a first positioning part is formed by the arc-shaped surface, the first horizontal plane and the first vertical plane are connected through smooth curved surfaces;

8. The pull-string chair back adjustment mechanism according to claim 1, wherein: the right side of the latch is provided with an upper guide inclined plane and a lower guide inclined plane.

9. The pull-string chair back adjustment mechanism according to claim 1, wherein: the slot member has three slots; when the clamping groove at the lowest side is matched with the clamping teeth, the chair back is horizontally arranged;