CN215076928U

CN215076928U - Chair back inclination angle locking and adjusting device

Info

Publication number: CN215076928U
Application number: CN202120662857.5U
Authority: CN
Inventors: 戴国良
Original assignee: Zhejiang Yihui Intelligent Furniture Co ltd
Current assignee: Zhejiang Yihui Intelligent Furniture Co ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-12-10
Anticipated expiration: 2031-03-31

Abstract

The utility model provides a back of chair inclination angle locking adjusting device, include: a housing; a moving component is arranged in the shell; a traction support part is hinged on the moving assembly, and the traction support part extends out of the shell; a limiting component is also arranged in the shell; the limiting component can move in the shell so as to be engaged with or separated from the moving component; when the limiting assembly is engaged or separated from the moving assembly, the moving assembly and the traction support member synchronously shift or are fixed; the utility model discloses a removal subassembly cooperation spacing subassembly that is equipped with to assist with the back of the chair articulated pull support piece, thereby control the angle of inclining of the back of the chair, and the operating mode is comparatively convenient.

Description

Chair back inclination angle locking and adjusting device

Technical Field

The utility model relates to a seat technical field especially relates to a back of chair inclines and faces upward angle locking adjusting device.

Background

The chair is one of the important conditions for improving the comfort of the chair at present, as a wide range of living appliances, and the chair back of the chair is adjustable. In addition, most of the prior functions of adjusting the inclination and the pitching of the chair back are realized by controlling the chassis at the bottom of the chair.

The method specifically comprises the following steps: for example, there is a lifting and tilting chair chassis (with a bulletin number of CN2922618) disclosed in the prior art, which describes a technical solution including: the upper plate, the middle plate and the knob; the spring is arranged in the middle disc, and the knob is fixed on the upper disc through a carriage screw; when the inclination angle of the chair back needs to be adjusted, the technical scheme needs to bend down to rotate the knob, the compression degree of the spring is changed by adjusting the position of the knob on the carriage screw, and then the middle disc and the upper disc are locked together by the locking inclination control device independently arranged on the adjusting knob so as to control the inclination of the chair back. However, the technical scheme has the technical problems of complex structure and inconvenient operation, and technical improvement is needed.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a device for locking and adjusting the tilt angle of a chair back.

In order to achieve the above object, the utility model provides a following technical scheme: a chair back recline angle locking adjustment device comprising: a housing; a moving component is arranged in the shell; a traction support part is hinged on the moving assembly, and the traction support part extends out of the shell; a limiting component is also arranged in the shell; the limiting component can move in the shell so as to be engaged with or separated from the moving component; when the limiting assembly is engaged with or separated from the moving assembly, the moving assembly and the traction support move synchronously or are static in the horizontal direction.

Furthermore, a fixing structure is also arranged in the shell; the moving component is arranged on the fixed structure in a sliding manner so as to realize the directional sliding of the moving component; the limiting component part is arranged inside the fixed structure.

Further, the moving assembly includes: a slide block and a return spring; the sliding block is slidably mounted on the fixed structure and hinged with the traction support piece; one end of the reset spring is connected with the sliding block and can apply elasticity to the sliding block and the traction support piece, and the other end of the reset spring is fixed on the inner wall of the shell.

Further, spacing subassembly includes: two positioning plates arranged at intervals and a traction moving piece; the positioning plate extends into the fixing structure to be meshed with the sliding block so as to fix the sliding block; the traction moving piece is positioned between the adjacent positioning plates and can control the positioning plates to move to be engaged with or separated from the sliding block.

As the utility model discloses a preferred scheme does, draws the moving member and includes: the traction rope, the moving block, the positioning column and the first pressure spring are arranged on the base; the first pressure spring is arranged on the opposite surfaces of the two positioning plates and gives elasticity to the two positioning plates so as to facilitate the resetting of the positioning plates; the positioning column is fixed between the positioning plates; one end of the traction rope is connected with the positioning plate, and the other end of the traction rope bypasses the positioning column and is fixedly connected with the moving block; and the moving block is provided with a pull rope for controlling the moving block to move.

Further, a guide plate is arranged in the shell; the moving block is arranged in the guide plate in a sliding manner; the pull rope penetrates through the guide plate and extends out of the shell; a pressure spring II is sleeved on the pull rope; the second pressure spring is located between the guide plate and the moving block, so that the second pressure spring drives the moving block to reset.

Furthermore, an upper chute is arranged on the fixed structure; the sliding block is arranged in the upper sliding chute in a sliding manner; the fixed structure is also provided with a lower chute used for limiting the moving direction of the positioning plate, and the moving direction of the sliding block is perpendicular to the moving direction of the positioning plate, so that the positioning plate is separated from the sliding block.

Further, the traction support comprises: a fixed seat and a connecting rod; one end of the connecting rod is hinged with the fixed seat, and the other end of the connecting rod is hinged with the sliding block.

As the utility model discloses a preferred scheme does: a chair comprises a seat part and a chair back, wherein the chair back is hinged with the seat part, and hinged points are positioned on two sides of the seat part, so that the rotating axis of the chair back is close to the hip joint of a human body, the waist and the hip joint of the human body are effectively supported, and the comfort of the seat of the human body is further improved; the chair back tilting angle locking and adjusting device is characterized in that the part of the traction support piece extending out of the shell is hinged with the chair back so as to effectively drive the chair back to rotate and be fixed.

Compared with the prior art, the beneficial effects of the utility model are as follows: the limiting assembly is manually controlled to move so as to adjust the working state of engagement or separation between the moving assembly and the limiting assembly, so that the moving assembly is stressed to be static or moved, and the moving assembly synchronously drives the traction support member to move or horizontally move relatively to be static; in addition, the traction support piece is hinged on the chair back, so that the sliding or static movement of the moving component can control the inclination angle adjustment of the chair back; and the structure is simple, and the operation mode is more convenient.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the installation positions of the traction moving member and the positioning plate in the embodiment of the present invention;

fig. 3 is a schematic view of an installation position of the embodiment of the present invention.

In the figure: 1. a housing; 2. a moving assembly; 21. a slider; 22. a return spring; 3. a limiting component; 31. positioning a plate; 32. drawing the moving part; 321. a hauling rope; 322. a moving block; 324. a first pressure spring; 323. a positioning column; 4. a traction support; 41. a fixed seat; 42. a connecting rod; 5. a fixed structure; 51. an upper chute; 52. a lower chute; 6. a guide plate; 7. pulling a rope; 8. a second pressure spring; 9. a seat portion; 10. a chair back.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1, a chair back reclining angle locking adjustment device includes: a housing 1; a moving component 2 is arranged in the shell 1; a traction support part 4 is hinged on the moving component 2, and the traction support part 4 partially extends out of the shell 1; a limiting component 3 is also arranged in the shell 1; the limiting component 3 can move in the shell 1 so as to be engaged with or separated from the moving component 2, so that the moving component 2 can be conveniently displaced and fixed; when the limiting component 3 is engaged with or separated from the moving component 2, the moving component 2 and the traction support component 4 are synchronously displaced or fixed, namely when the limiting component 3 is separated from the moving component 2, the moving component 2 automatically resets and drives the traction support component 4 to move, or the traction support component 4 applies force to drive the moving component 2 to displace; when the limiting component 3 is engaged with the moving component 2, the position of the moving component 2 is fixed, so that the traction support 4 is relatively static in the horizontal direction.

As shown in fig. 1, a fixing structure 5 is further disposed in the housing 1; the moving assembly 2 is arranged on the fixed structure 5 in a sliding manner; the limiting assembly 3 is partially arranged inside the fixed structure 5, and in actual operation, the fixed structures 5 (namely, two groups of fixed structures 5) are symmetrically arranged in the shell 1, and the fixed structures 5 and the movable assemblies 2 are consistent in quantity.

As shown in fig. 1, the moving assembly 2 includes: a slider 21, a return spring 22; the sliding blocks 21 are all slidably mounted on the fixed structure 5, and the front ends of the sliding blocks 21 are hinged with the traction support 4; one end of the return spring 22 is connected with the rear end of the slider 21, the other end is fixed on the inner wall of the housing 1, and the return spring 22 always keeps a pre-pressing state to apply elasticity to the slider 21.

As shown in fig. 1, the stopper assembly 3 includes: two positioning plates 31 and a traction moving piece 32 which are arranged at intervals; the positioning plate 31 partially extends into the fixing structure 5 to be meshed with the sliding block 21, and specifically comprises: the bottom of the slide block 21 and the top of the positioning plate 31 extending into the fixed structure 5 are provided with notches which are engaged with each other; the traction moving member 32 is located between the adjacent positioning plates 31 and can control the positioning plates 31 to be engaged with or disengaged from the slider 21.

As shown in fig. 2, the towing mover 32 includes: the device comprises a traction rope 321, a moving block 322, a positioning column 323 and a first pressure spring 324; the first pressure spring 324 is arranged on the opposite surfaces of the two positioning plates 31 and gives elasticity to the two positioning plates 31 so as to help the positioning plates 31 to reset; the number of the positioning columns 323 is two, and the positioning columns 323 are arranged between the two positioning plates 31 and keep a certain interval; the two pulling ropes 321 are arranged, the front ends of the pulling ropes 321 are respectively fixed on the opposite surfaces of the positioning plate 31, the rear ends of the pulling ropes 321 bypass the positioning columns 323 and are jointly fixed on the moving block 322, and an included angle formed by the extension between the front ends and the rear ends of the pulling ropes 321 is 90 degrees, so that the pulling ropes 321 can horizontally pull the positioning plate 31; the moving block 322 is provided with a pull rope 7 for controlling the moving block 322 to move so as to pull the moving block 322.

As shown in fig. 2, a guide plate 6 in a U-shaped structure is arranged in the housing 1; the moving block 322 is slidably arranged in the U-shaped opening of the guide plate 6 to limit the moving direction of the moving block 322; the pull rope 7 penetrates through the guide plate 6 and extends out of the shell 1; a second pressure spring 8 is sleeved on the pull rope 7; the second compression spring 8 is positioned between the moving blocks 322; to assist in repositioning the movement block 322.

As shown in fig. 1, in the present invention, the fixing structure 5 is preferably composed of two iron sheets arranged at intervals; the side walls of the two iron sheets are oppositely provided with upper sliding grooves 51; the sliding blocks 21 are all arranged in the upper sliding chute 51 in a sliding manner; the opposite sides of the two groups of fixed structures 5 are also provided with lower sliding chutes 52 (namely, the side walls of the two iron sheets positioned in the middle are both provided with the lower sliding chutes 52); the positioning plate 31 partially passes through the lower chute 52 to the housing 1.

As shown in fig. 1, the towing support 4 includes: a fixed seat 41 and a connecting rod 42; the connecting rod 42 is integrally arranged in a U-shaped structure, two ends of a U-shaped opening of the connecting rod are respectively hinged with the corresponding sliding blocks 21, a vertical rod is fixed at one end of the connecting rod 42 extending out of the shell 1, and the vertical rod is hinged with the fixed seat 41; the slider 21 can drive the connecting rod 42 to move synchronously when moving, and the connecting rod 42 rotates around the fixed seat 41, so that when the slider 21 moves, the connecting rod 42 can adjust the rotating angle between the connecting rod 42 and the fixed seat 41 and the slider 21 in time, and the slider 21 is prevented from being locked.

As shown in fig. 3, the utility model also discloses a seat equipped with the chair back tilting angle locking and adjusting device, which comprises a seat part 9 and a chair back 10, wherein the chair back 10 is hinged with the seat part 9, and the hinged points are positioned at the left side and the right side of the seat part 9; the chair back inclination angle locking and adjusting device is installed at the bottom of the seat part 9, and the part of the traction support piece 4 extending out of the shell 1 is hinged with the chair back 10, specifically: the fixed seat 41 is arranged on the chair back 10 below the seat 9; compare original direct setting in the seat chassis of seat 9 bottoms, the utility model discloses directly articulate back of the chair 10 in the both sides of seat 9 for back of the chair 10 pivoted axle center is close with human pivoted hip joint, effectively supports human waist and hip joint, further improves the travelling comfort that the human body leaned on.

The working principle is as follows:

when a human body needs to rotate the chair back 10, the pull rope 7 is manually pulled towards one side departing from the chair back 10, the moving block 322 gradually extends into the U-shaped opening of the guide plate 6, the pressure spring II 8 is compressed under the stress, the pull rope 321 drives the positioning plate 31 to gradually withdraw from the fixing structure 5 and to approach each other under the stress, and at the moment, the positioning plate 31 is separated from the sliding block 21; when the stress of the chair back 10 is larger than the acting force of the return spring 22, the return spring 22 drives the slide block 21 to move towards the direction departing from the traction support piece 4, and the chair back 10 rotates backwards; when the stress of the chair back 10 is smaller than the acting force of the return spring 22, the return spring 22 drives the slide block 21 to move towards the traction support piece 4, and the chair back 10 is driven to return; after the inclination angle of the chair back 10 is determined, the pull rope 7 is manually loosened, at the moment, the second compression spring 8 drives the moving block 322 to reset, and the first compression spring 324 drives the positioning plate 31 to reset and is meshed with the sliding block 21 again.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. A chair back recline angle locking adjustment device comprising: a housing (1); the device is characterized in that a moving assembly (2) is arranged in the shell (1); a traction support (4) is hinged on the moving assembly (2), and the traction support (4) partially extends out of the shell (1); a limiting component (3) is also arranged in the shell (1); the limiting component (3) can move in the shell (1) so as to be engaged with or separated from the moving component (2); when the limiting assembly (3) is separated from or engaged with the moving assembly (2), the moving assembly (2) and the traction support (4) synchronously move or are static in the horizontal direction.

2. The chair back reclining angle locking adjustment device as claimed in claim 1, wherein a fixing structure (5) is further provided in the housing (1); the moving assembly (2) is arranged on the fixed structure (5) in a sliding manner; the limiting assembly (3) is partially arranged inside the fixed structure (5).

3. A chair back recline angle adjustment device according to claim 2, wherein said moving assembly (2) includes: a slide block (21) and a return spring (22); the sliding block (21) is slidably mounted on the fixed structure (5) and hinged with the traction support (4); one end of the return spring (22) is connected with the sliding block (21) and can apply elasticity to the sliding block (21) and the traction support piece (4), and the other end of the return spring is fixed on the inner wall of the shell (1).

4. A chair back recline angle adjustment device according to claim 3, wherein said check assembly (3) includes: two positioning plates (31) and a traction moving piece (32) which are arranged at intervals; the positioning plate (31) partially extends into the fixed structure (5) to be meshed with the sliding block (21); the traction moving piece (32) is positioned between the adjacent positioning plates (31) and can control the positioning plates (31) to be meshed with or separated from the sliding block (21).

5. A chair back recline angle adjustment device according to claim 4, wherein said traction moving member (32) includes: the device comprises a traction rope (321), a moving block (322), a positioning column (323) and a first pressure spring (324); the first pressure spring (324) is arranged on the opposite surfaces of the two positioning plates (31) and gives elasticity to the two positioning plates (31); the positioning columns (323) are fixed between the positioning plates (31); one end of the traction rope (321) is connected with the positioning plate (31), and the other end of the traction rope bypasses the positioning column (323) and is fixedly connected with the moving block (322); and a pull rope (7) for controlling the moving block (322) to move is arranged on the moving block (322).

6. The chair back tilt angle adjustment device of claim 5, wherein a guide plate (6) is provided in the housing (1); the moving block (322) is arranged in the guide plate (6) in a sliding manner; the pull rope (7) penetrates through the guide plate (6) and extends out of the shell (1); a second pressure spring (8) is sleeved on the pull rope (7); the second pressure spring (8) is located between the guide plate (6) and the moving block (322).

7. The chair back inclination angle adjusting device according to claim 6, wherein the fixed structure (5) is provided with an upper chute (51); the sliding block (21) is arranged in the upper sliding groove (51) in a sliding manner; the fixing structure (5) is further provided with a lower sliding groove (52) used for limiting the moving direction of the positioning plate (31).

8. The chair back recline angle locking adjustment device according to any one of claims 1-6, wherein said traction support (4) includes: a fixed seat (41) and a connecting rod (42); one end of the connecting rod (42) is hinged with the fixed seat (41), and the other end of the connecting rod is hinged with the sliding block (21).

9. A seat comprises a seat part (9) and a chair back (10), wherein the chair back (10) is hinged with the seat part (9) and hinged points are positioned at two sides of the seat part (9); characterized in that it also comprises a backrest tilt angle locking adjustment device as claimed in any one of claims 1 to 6, the portion of said traction support (4) extending outside the casing (1) being hinged to the backrest (10).