CN219109055U

CN219109055U - Front-back adjusting device for headrest of chair

Info

Publication number: CN219109055U
Application number: CN202223356930.XU
Authority: CN
Inventors: 郑宇轩
Original assignee: Central South University of Forestry and Technology
Current assignee: Central South University of Forestry and Technology
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-06-02
Anticipated expiration: 2032-12-14

Abstract

The utility model discloses a front-back adjusting device of a chair headrest, which comprises a mounting frame, wherein a supporting block is fixedly arranged on the upper surface of the mounting frame, a movable sleeve is connected to the surface of the supporting block in a sliding manner, an adjusting assembly is fixedly arranged at the top of the movable sleeve, the adjusting assembly comprises a fixed shell and an adjusting column, the adjusting column is connected in the fixed shell in a sliding manner, and a connecting column is fixedly arranged at the end part of the adjusting column. This chair headrest front and back adjusting device, through setting up adjusting part, when the front and back position of headrest is adjusted to needs, hugs closely the headrest with the head rear portion, then only need upwards pull the pull ring handle with the hand, then drive the adjusting column under compression spring's effect and remove to the fixed shell outside, and then drive the headrest and remove to the direction of head, and then adjust the headrest forward, when adjusting the headrest backward equally, promote the headrest with the head backward, will adjust the post and remove to the fixed shell inside, unclamp the pull ring handle again, and then carry out spacing fixedly to the headrest, make the adjustment operation more convenient.

Description

Front-back adjusting device for headrest of chair

Technical Field

The utility model relates to the technical field of furniture articles, in particular to a front-back adjusting device of a chair headrest.

Background

In recent years, due to the influence of epidemic situation, more and more time people can perform network office in home, the network office can lead users to sit on the chair for a long time and work in alignment with computers, the office chair becomes a seat for wide use in people's work and life, and some office chairs with headrests are also standard in configuration, so that the office chairs with headrests can improve the comfort of people in working.

Patent document CN216438861U, an adjusting device for a chair headrest, which comprises a sliding body for fixing the chair headrest and a fixing body for connecting a chair back frame, wherein the chair headrest in the patent document can be adjusted up and down, but cannot be adjusted back and forth, and when the position of the headrest needs to be adjusted, a user is required to lift up to adjust from the rear of the chair, the operation is cumbersome and inconvenient, therefore, a chair mounting device convenient for adjusting the back and forth of the headrest is designed, and the technical improvement is carried out on the problem.

Disclosure of Invention

The utility model aims to provide a front-back adjusting device for a headrest of a chair, which aims to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a chair headrest front and back adjusting device, includes the installing frame, the last fixed surface of installing frame is provided with the supporting shoe, and the surface sliding connection of supporting shoe has the movable sleeve, and the top of movable sleeve is fixed with adjusting part, and adjusting part includes fixed shell and adjusting column, adjusting column sliding connection in the inside of fixed shell, adjusting column's end fixing has the linking post, and the tip of linking post is connected with the headrest mounting panel through damping pivot rotation.

Preferably, the inner wall of the fixed shell is fixedly provided with a compression spring, the end part of the compression spring is fixedly connected with the adjusting column, and the surface of the adjusting column is provided with a plurality of positioning clamping grooves.

Preferably, the upper surface of the fixed shell is fixed with a limit frame, the upper surface of the limit frame is provided with a guide hole, the inner wall of the guide hole is slidably connected with a positioning clamping rod, the bottom end of the positioning clamping rod extends to the inside of the fixed shell, and the positioning clamping rod is matched with the positioning clamping groove.

Preferably, the surface cover of location kelly is equipped with reset spring, and reset spring's top and the fixed surface of spacing frame are connected, and reset spring's the other end and the fixed surface of location kelly are connected, and the top of location kelly is fixed with the pull ring handle.

Preferably, an inflatable headrest is fixedly arranged on the surface of the headrest mounting plate, and an inflation nozzle is arranged on the surface of the inflatable headrest.

Preferably, the surface of the movable sleeve is provided with a bar-shaped hole, the surface of the supporting block is provided with a bolt hole, the inner wall of the threaded hole is in threaded connection with a fastening bolt, and the fastening bolt is in sliding connection with the bar-shaped hole.

Preferably, a screw hole is formed in the surface of the mounting frame, a clamping bolt is connected to the inner wall of the screw hole in a threaded mode, and a clamping block is arranged at the end portion of the clamping bolt.

Advantageous effects

The utility model provides a front-back adjusting device of a chair headrest, which has the following beneficial effects:

1. this chair headrest front and back adjusting device, through setting up adjusting part, when the front and back position of headrest is adjusted to needs, hugs closely the headrest with the head rear portion, then only need upwards pull the pull ring handle with the hand, then drive the adjusting column under compression spring's effect and remove to the fixed shell outside, and then drive the headrest and remove to the direction of head, and then adjust the headrest forward, when adjusting the headrest backward equally, promote the headrest with the head backward, will adjust the post and remove to the fixed shell inside, unclamp the pull ring handle again, and then carry out spacing fixedly to the headrest, make the adjustment operation more convenient.

2. This chair headrest front and back adjusting device through being provided with the bar hole on movable sleeve surface, can reciprocate movable sleeve at the supporting shoe surface, and the reuse fastening bolt supports tightly fixedly to the supporting shoe to be convenient for highly adjusting the headrest, through setting up the headrest of aerifing, can improve the comfort level of headrest, and can utilize the headrest of aerifing to play similar massage's effect to head and neck.

Drawings

FIG. 1 is a schematic view of the present utility model in a front cross-section;

FIG. 2 is a schematic perspective view of a movable sleeve according to the present utility model;

fig. 3 is an enlarged schematic view of the structure at a in fig. 1.

In the figure: the device comprises a mounting frame 1, a supporting block 2, a movable sleeve 3, a fixed shell 4, an adjusting column 5, a headrest mounting plate 6, a compression spring 7, a positioning clamping groove 8, a limiting frame 9, a positioning clamping rod 10, a reset spring 11, an inflatable headrest 12, a strip-shaped hole 13, a fastening bolt 14, a clamping bolt 15 and a pull ring handle 16.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides a technical solution: the utility model provides a chair headrest front and back adjusting device, includes mounting frame 1, and the screw has been seted up on mounting frame 1's surface, and the inner wall threaded connection of screw has clamping bolt 15, and clamping bolt 15's tip is provided with the grip block.

The upper surface of the installation frame 1 is fixedly provided with a supporting block 2, the surface of the supporting block 2 is connected with a movable sleeve 3 in a sliding manner, the section of the movable sleeve 3 is -shaped, the top of the movable sleeve 3 is fixedly provided with an adjusting component, and the adjusting component comprises a fixed shell 4 and an adjusting column 5.

The surface of the movable sleeve 3 is provided with a bar-shaped hole 13, the surface of the supporting block 2 is provided with a bolt hole, the inner wall of the threaded hole is in threaded connection with a fastening bolt 14, and the fastening bolt 14 is in sliding connection with the bar-shaped hole 13.

The end of the fastening bolt 14 is provided with a stop block, the stop block is arranged on the other side of the supporting block 2 away from the fastening bolt 14, the stop block is in lap joint with the surface of the supporting block 2, the stop block can play a role in preventing the fastening bolt 14 from falling off and limiting, the surface of a nut of the fastening bolt 14 is provided with a rubber pad, and the rubber pad can play a role in preventing slipping when the fastening bolt 14 abuts against the movable sleeve 3.

Through being provided with bar hole 13 at movable sleeve 3 surface, can reciprocate movable sleeve 3 at supporting shoe 2 surface, utilize fastening bolt 14 to support the fastening to fix supporting shoe 2 again to be convenient for adjust the height of headrest.

The inner wall of the fixed shell 4 is fixedly provided with a compression spring 7, the end part of the compression spring 7 is fixedly connected with the adjusting column 5, and a plurality of positioning clamping grooves 8 are formed in the surface of the adjusting column 5.

The upper surface of the fixed shell 4 is fixed with a limit frame 9, the upper surface of the limit frame 9 is provided with a guide hole, the inner wall of the guide hole is slidably connected with a positioning clamping rod 10, the bottom end of the positioning clamping rod 10 extends to the inside of the fixed shell 4, the positioning clamping rod 10 is matched with the positioning clamping groove 8, the upper surface of the fixed shell 4 is provided with a through hole matched with the positioning clamping rod 10, and the positioning clamping rod 10 can penetrate through the through hole to be inserted into the surface of the adjusting column 5.

The surface cover of location card pole 10 is equipped with reset spring 11, and reset spring 11 top and the fixed surface of spacing frame 9 are connected, and reset spring 11's the other end and the fixed surface of location card pole 10 are connected, and the top of location card pole 10 is fixed with pull ring handle 16.

Through setting up adjusting part, when the front and back position of headrest is adjusted to needs, hug closely the headrest with the head rear portion, then only need upwards draw pull ring handle 16 with the hand, then drive adjusting column 5 to the outside removal of fixed shell 4 under compression spring 7's effect, and then drive headrest to the direction removal of head, and then adjust the headrest forward, when adjusting the headrest backward equally, promote the headrest with the head backward, will adjust column 5 to the inside removal of fixed shell 4, loosen pull ring handle 16 again, and then carry out spacing fixed to the headrest, make the regulation operation more convenient.

The adjusting column 5 is slidably connected in the fixing shell 4, the end part of the adjusting column 5 is fixedly provided with a connecting column, the end part of the connecting column is rotationally connected with the headrest mounting plate 6 through the damping rotating shaft, the surface of the headrest mounting plate 6 is fixedly provided with the inflatable headrest 12, and the surface of the inflatable headrest 12 is provided with an inflating nozzle.

By providing the headrest with the air-inflated structure, the comfort of the headrest can be improved, and the air-inflated headrest 12 can be utilized to exert a massage-like effect on the head and neck.

Working principle: when a user needs to adjust the headrest forwards and backwards, the user does not need to lift up from the chair, as long as the back brain spoon is abutted against the surface of the headrest, the pull ring handle 16 is pulled upwards by one hand to drive the positioning clamping rod 10 to move upwards, the positioning clamping rod 10 is moved out of the positioning clamping groove 8 on the surface of the adjusting column 5, the limit on the adjusting column 5 is further lost, then the adjusting column 5 is pushed to move forwards under the action of the compression spring 7 in the fixed shell 4, the headrest is further moved forwards, after the headrest is adjusted and in a proper position, the pull ring handle 16 is loosened, the positioning clamping rod 10 is reinserted into the positioning clamping groove 8 corresponding to the surface position of the adjusting column 5 under the action of the reset spring 11, the positioning of the adjusting column 5 is realized, the headrest is adjusted forwards in the same way, and the headrest can be adjusted backwards, and the operation is simple and convenient.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a chair headrest front and back adjusting device, includes mounting frame (1), its characterized in that: the upper surface fixed of installing frame (1) is provided with supporting shoe (2), and the surface sliding connection of supporting shoe (2) has movable sleeve (3), and the top of movable sleeve (3) is fixed with adjusting part, and adjusting part includes fixed shell (4) and adjusting column (5), adjusting column (5) sliding connection in the inside of fixed shell (4), the tip of adjusting column (5) is fixed with the linking post, and the tip of linking post is connected with headrest mounting panel (6) through damping pivot rotation.

2. A chair headrest front-rear adjustment device according to claim 1, characterized in that: the inner wall of the fixed shell (4) is fixedly provided with a compression spring (7), the end part of the compression spring (7) is fixedly connected with the adjusting column (5), and a plurality of positioning clamping grooves (8) are formed in the surface of the adjusting column (5).

3. A chair headrest front-rear adjustment device according to claim 1, characterized in that: the upper surface of fixed casing (4) is fixed with spacing frame (9), and the guiding hole has been seted up to the upper surface of spacing frame (9), and the inner wall sliding connection of guiding hole has location draw-in lever (10), and the inside of fixed casing (4) is extended to the bottom of location draw-in lever (10), and location draw-in lever (10) and location draw-in groove (8) assorted.

4. A chair headrest front-rear adjustment device according to claim 3, characterized in that: the surface cover of location kelly (10) is equipped with reset spring (11), and the top of reset spring (11) is connected with the fixed surface of spacing frame (9), and the other end of reset spring (11) is connected with the fixed surface of location kelly (10), and the top of location kelly (10) is fixed with pull ring handle (16).

5. A chair headrest front-rear adjustment device according to claim 1, characterized in that: the surface of the headrest mounting plate (6) is fixedly provided with an inflatable headrest (12), and the surface of the inflatable headrest (12) is provided with an inflation nozzle.

6. A chair headrest front-rear adjustment device according to claim 1, characterized in that: the surface of movable sleeve (3) has seted up bar hole (13), the bolt hole has been seted up on the surface of supporting shoe (2), and the inner wall threaded connection of screw hole has fastening bolt (14), fastening bolt (14) and bar hole (13) sliding connection.

7. A chair headrest front-rear adjustment device according to claim 1, characterized in that: by a means of

Screw holes are formed on the surface of the mounting frame (1), clamping bolts (15) are connected with the inner walls of the screw holes in a threaded manner,

the end part of the clamping bolt (15) is provided with a clamping block.