CN223731030U - Office chair with adjustable backrest - Google Patents

Abstract

The utility model relates to the technical field of office chairs and discloses an office chair with an adjustable backrest, which comprises a support frame, wherein a limit hole is formed in the outer wall of the support frame, a sliding column is connected inside the support frame in a sliding manner, a chair back is fixedly connected to the outer wall of the sliding column, a connecting plate is fixedly connected to the outer wall of the sliding column, a clamping column is connected inside the connecting plate in a sliding manner, a sliding piece is fixedly connected to the outer wall of the clamping column, the outer wall of the sliding piece is connected inside the connecting plate in a sliding manner, a limit component is arranged on the outer wall of the chair back, and the limit component is used for limiting. According to the utility model, the clamping column can be driven to slide by driving the rotating block to rotate, and the effect of flexibly adjusting the position of the chair back can be achieved by the mutual coordination of the sliding column, the connecting plate, the sliding sheet, the first spring and the chair back, so that the effect of adapting to different user demands can be achieved, and more user groups can be adapted.

Description

Office chair with adjustable backrest

Technical Field

The utility model relates to the technical field of office chairs, in particular to an office chair with an adjustable backrest.

Background

Office chairs are a chair designed specifically for the office environment, intended to provide comfort and support, help a person sitting for a long period of time maintain a good posture, and reduce physical discomfort. It generally has multiple adjustment functions to accommodate the needs of different users and to ensure that the health of the work is maintained. Office chairs may vary widely in design and function, but basically they are ergonomic to improve work efficiency and comfort. The user is helped to adjust to the angle suitable for the spine curve of the user, the waist and back pressure possibly brought by sitting for a long time is reduced, the spine deformation or pain is avoided, and the office chair with the adjustable backrest is needed.

The office chair with the adjustable backrest is an office chair which can be adjusted in working in an office environment, and in the prior art, the backrest of the office chair cannot be adjusted generally, so that the position of the backrest cannot be changed according to the requirements of different users, and the office chair cannot be suitable for more people.

Disclosure of utility model

In order to overcome the defects, the utility model provides an office chair with an adjustable backrest, which aims to solve the problems that the backrest of the office chair cannot be adjusted generally, the position of the backrest cannot be changed according to the requirements of different users, and more applicable people cannot be adapted.

In order to achieve the above purpose, the office chair with the backrest capable of being adjusted comprises a supporting frame, wherein a limit hole is formed in the outer wall of the supporting frame, a sliding column is connected inside the supporting frame in a sliding mode, a chair back is fixedly connected to the outer wall of the sliding column, a connecting plate is fixedly connected to the outer wall of the sliding column, a clamping column is connected inside the connecting plate in a sliding mode, a sliding piece is fixedly connected to the outer wall of the clamping column, the outer wall of the sliding piece is connected inside the connecting plate in a sliding mode, one end of a first spring is fixedly connected to the outer wall of the sliding piece, the other end of the first spring is fixedly connected inside the connecting plate, a rotating shaft is fixedly connected to the outer wall of the clamping column, a rotating block is connected to the outer wall of the rotating block in a sliding mode, a limit assembly is arranged on the outer wall of the connecting plate, and the limit assembly is used for limiting the chair back.

Preferably, the limiting component comprises a limiting block, the outer wall of the limiting block is fixedly connected with the outer wall of the chair back, a limiting strip is connected inside the limiting block in a sliding mode, and the outer wall of the limiting strip is fixedly connected with the outer wall of the supporting frame.

Preferably, the outer wall fixedly connected with fixed block of back of the chair, the outer wall fixedly connected with sliding block of fixed block, the inside sliding connection of sliding block has the limiting plate.

Preferably, the inside sliding connection of sliding block has the sliding plate, the outer wall fixedly connected with spring two's one end, spring two's the other end fixed connection is in the inside of sliding block.

Preferably, the outer wall fixedly connected with fixture block of sliding plate, the outer wall sliding connection of fixture block is in the inside of limiting plate.

Preferably, the outer wall fixedly connected with spliced pole of limiting plate, the spacing groove has been seted up to the inside of spliced pole, the inside fixedly connected with connecting axle of spliced pole.

Preferably, the outer wall of connecting axle rotates and is connected with the connecting block, the inside fixedly connected with spring three's of connecting block one end, the other end fixedly connected with ball of spring three, the outer wall sliding connection of ball is in the inside of spacing groove, the outer wall fixed connection of connecting block is at the outer wall of head rest.

Preferably, the outer wall fixedly connected with seat support of support frame, the outer wall of support frame is provided with the base.

The utility model has the following beneficial effects:

1. according to the utility model, the clamping column can be driven to slide by driving the rotating block to rotate on the outer wall of the rotating shaft, and the position of the chair back can be flexibly adjusted by the mutual cooperation of the sliding column, the connecting plate, the sliding sheet, the first spring and the chair back, so that the effect of adapting to different user demands can be achieved, and more user groups can be adapted.

2. According to the utility model, the sliding plate is pressed to drive the clamping block to slide in the limiting plate, and the second spring, the sliding block, the limiting plate, the connecting column, the connecting shaft, the connecting block, the third spring, the ball and the head support are mutually matched, so that the effect of adjusting the angle and the position of the head support can be achieved, different requirements of users are met, and the comfort of the heads and the necks of the users is improved.

Drawings

FIG. 1 is a perspective view of an office chair with an adjustable backrest in accordance with the present utility model;

FIG. 2 is a schematic view of a partial structure of a backrest of an office chair with an adjustable backrest according to the present utility model;

Fig. 3 is a schematic cross-sectional view of the internal structure of the support frame of the office chair with the adjustable backrest according to the present utility model;

fig. 4 is a schematic view of a partial structure of a limit bar of an office chair with an adjustable backrest according to the present utility model;

Fig. 5 is a schematic view of a partial structure of a limiting plate of an office chair with an adjustable backrest according to the present utility model;

FIG. 6 is a schematic cross-sectional view showing the internal structure of a sliding block of an office chair with an adjustable backrest according to the present utility model;

fig. 7 is a schematic view of a partial structure of a headrest of an office chair with an adjustable backrest according to the present utility model.

Legend description:

1. A support frame; 2, a limiting hole, 3, a chair back, 4, a sliding column, 5, a connecting plate, 6, a clamping column, 7, a sliding sheet, 8, a first spring, 9, a rotating shaft, 10, a rotating block, 11, a limiting block, 12, a limiting strip, 13, a fixed block, 14, a sliding block, 15, a sliding plate, 16, a second spring, 17, a clamping block, 18, a limiting plate, 19, a connecting column, 20, a limiting groove, 21, a connecting shaft, 22, a connecting block, 23, a third spring, 24, a ball, 25, a head support, 26, a chair seat, 27 and a base.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. 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, 2 and 3, the office chair with the backrest capable of being adjusted comprises a support frame 1, wherein a limit hole 2 is formed in the outer wall of the support frame 1, a sliding column 4 is connected inside the support frame 1 in a sliding mode, a chair back 3 is fixedly connected to the outer wall of the sliding column 4, a connecting plate 5 is fixedly connected to the outer wall of the sliding column 4, a clamping column 6 is connected inside the support frame 1 in a sliding mode in an inner sliding mode, a sliding piece 7 is fixedly connected to the outer wall of the clamping column 6, the outer wall of the sliding piece 7 is connected inside the connecting plate 5 in a sliding mode, one end of a spring 8 is fixedly connected to the outer wall of the sliding piece 7, the other end of the spring 8 is fixedly connected inside the connecting plate 5, a rotating shaft 9 is fixedly connected to the outer wall of the rotating block 10, the outer wall of the rotating block 10 is connected to the outer wall of the connecting plate 5 in a sliding mode, a limit component is arranged on the outer wall of the chair back 3, and the limit component is used for limiting the chair back 3.

Specifically, the limiting hole 2 formed through the outer wall of the support frame 1 can play a limiting role, the sliding column 4 slides in the support frame 1 to play a role in driving the chair back 3 to move, the sliding column 4 plays a fixed role on the connecting plate 5, the rotating block 10 is manually driven to rotate on the outer wall of the rotating shaft 9 to drive the clamping column 6 to slide in the support frame 1, when the clamping column 6 slides out of the support frame 1, the sliding column 4 can be driven to slide in the support frame 1 through driving the chair back 3, the sliding block 10 is driven to reversely rotate again to drive the clamping column 6 to slide in the limiting hole 2, the elastic resilience of the spring 8 can drive the sliding sheet 7 to slide in the connecting plate 5, and then the chair back 3 after the position is adjusted can be limited, and the chair back 3 can be flexibly adjusted, so that the requirements of different users can be met.

Referring to fig. 4, the limiting component comprises a limiting block 11, wherein the outer wall of the limiting block 11 is fixedly connected with the outer wall of the chair back 3, a limiting bar 12 is slidably connected in the limiting block 11, and the outer wall of the limiting bar 12 is fixedly connected with the outer wall of the supporting frame 1.

Specifically, the limiting block 11 has a fixed effect on the chair back 3, and the limiting block 11 can be driven to slide on the outer wall of the limiting strip 12 by driving the chair back 3 to move, so that the effect of supporting and limiting the chair back 3 is achieved.

Referring to fig. 5 and 6, the outer wall of the chair back 3 is fixedly connected with a fixed block 13, the outer wall of the fixed block 13 is fixedly connected with a sliding block 14, the inside of the sliding block 14 is slidably connected with a limiting plate 18, the inside of the sliding block 14 is slidably connected with a sliding plate 15, the outer wall of the sliding plate 15 is fixedly connected with one end of a second spring 16, the other end of the second spring 16 is fixedly connected with the inside of the sliding block 14, the outer wall of the sliding plate 15 is fixedly connected with a clamping block 17, and the outer wall of the clamping block 17 is slidably connected with the inside of the limiting plate 18.

Specifically, the chair back 3 is used for fixing the fixing block 13, the fixing block 13 is used for fixing the sliding block 14, the limiting plate 18 can be used for adjusting the position of the limiting plate 18 by sliding the inside of the sliding block 14, the head rest 25 is adjusted, the sliding plate 15 is pressed to slide in the sliding block 14 to drive the clamping block 17 to slide, the spring II 16 is used for rebound to drive the clamping block 17 to slide in the inside of the limiting plate 18, and the limiting effect of limiting the movement of the limiting plate 18 is achieved.

Referring to fig. 7, the outer wall of the limiting plate 18 is fixedly connected with a connecting column 19, a limiting groove 20 is formed in the connecting column 19, a connecting shaft 21 is fixedly connected in the connecting column 19, a connecting block 22 is rotatably connected to the outer wall of the connecting shaft 21, one end of a spring three 23 is fixedly connected to the inner portion of the connecting block 22, a ball 24 is fixedly connected to the other end of the spring three 23, the outer wall of the ball 24 is slidably connected to the inner portion of the limiting groove 20, and the outer wall of the connecting block 22 is fixedly connected to the outer wall of a head support 25.

Specifically, play fixed effect through limiting plate 18 to spliced pole 19, set up spacing groove 20 through spliced pole 19 inside, spacing groove 20 plays spacing effect, play fixed effect to connecting axle 21 through spliced pole 19, through driving connecting block 22 at the outer wall rotation of connecting axle 21, can drive head rest 25 rotation, play the effect of resilience to ball 24 through three 23 of spring and can drive ball 24 and slide in spacing groove 20's inside, and then carry out spacing effect after reaching the angle of adjustment head rest 25.

Referring to fig. 1, a seat 26 is fixedly connected to an outer wall of the support frame 1, and a base 27 is provided to the outer wall of the support frame 1.

Specifically, the chair seat 26 is fixed through the support frame 1, the chair seat 26 is used for supporting a user, the base 27 arranged through the outer wall of the support frame 1 can play a role in supporting an office chair, and the bottom of the base 27 is provided with wheels, so that the office chair can be moved.

Working principle: when the office chair is used, the office chair can be adjusted according to the requirement of a user, firstly, the rotating block 10 can be manually lifted to drive the rotating shaft 9 to rotate in the rotating block 10, then the sliding piece 7 is driven to slide in the connecting plate 5, meanwhile, the first spring 8 is driven to compress, the clamping column 6 is driven to slide out of the limit hole 2 formed in the support frame 1 through the rotating shaft 9, at the moment, the chair back 3 is manually pulled to move, meanwhile, the sliding column 4 is driven to slide in the support frame 1, the limit block 11 slides on the outer wall of the limit bar 12, after the chair back 3 slides to a proper position, the clamping column 6 can be driven to slide in the limit hole 2 through the rebound effect of the first spring 8, the effect of limiting the chair back 3 after the chair back 3 moves is achieved, and the position adjusting effect of the chair back 3 is achieved, so as to adjust the position of the chair back 3 according to the requirements of different users, and adapt to more people, in addition, when the head rest 25 needs to be adjusted, the sliding plate 15 is pressed to slide in the sliding block 14 to drive the second spring 16 to compress, meanwhile, the clamping block 17 is driven to slide out of the clamping groove arranged in the limiting plate 18, at the moment, the limiting plate 18 is adjusted to a proper position by driving the limiting plate 18 to slide in the sliding block 14, at the moment, the clamping block 17 is driven to slide in the limiting plate 18 by stopping pressing the sliding block 14 and by the rebound action of the second spring 16, at the moment, the effect of limiting the limiting plate 18 after adjustment is achieved, when the angle of the head rest 25 needs to be adjusted, the head rest 25 is rotated to drive the connecting block 22 to rotate on the outer wall of the connecting shaft 21, the third spring 23 plays a rebound role on the ball 24, can drive ball 24 and slide in the inside of spacing groove 20, wherein spacing groove 20 can play spacing effect to ball 24, and then reaches the nimble effect of adjusting the head rest 25 position to adapt to the position of sitting of user under the different circumstances, improve user's head comfort level, this office chair not only can reach the nimble effect of adjusting the back of the chair 3 according to user's demand, so that adapt to more user crowds, can also reach and adjust head rest 25, so that improve user's neck and head's comfort level.

It should be noted that the foregoing description is only a preferred embodiment of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it should be understood that modifications, equivalents, improvements and modifications to the technical solution described in the foregoing embodiments may occur to those skilled in the art, and all modifications, equivalents, and improvements are intended to be included within the spirit and principle of the present utility model.

Claims (8)

1. The office chair with the adjustable backrest comprises a supporting frame (1) and is characterized in that a limit hole (2) is formed in the outer wall of the supporting frame (1), a sliding column (4) is connected to the inner side of the supporting frame (1) in a sliding mode, a chair back (3) is fixedly connected to the outer wall of the sliding column (4), a connecting plate (5) is fixedly connected to the outer wall of the sliding column (4), a clamping column (6) is connected to the inner side of the connecting plate (5) in a sliding mode, a sliding sheet (7) is fixedly connected to the outer wall of the clamping column (6), a spring (8) is fixedly connected to the outer wall of the sliding sheet (7) at one end of the sliding sheet, a rotating shaft (9) is fixedly connected to the outer wall of the clamping column (6), a rotating block (10) is connected to the outer wall of the rotating shaft (9) in a rotating mode, and the outer wall of the rotating block (10) is connected to the outer wall of the chair back (5) in a sliding mode, and the chair back (3) is limited by the limiting component.

2. The office chair with the adjustable backrest of claim 1, wherein the limiting component comprises a limiting block (11), the outer wall of the limiting block (11) is fixedly connected to the outer wall of the backrest (3), a limiting strip (12) is slidably connected to the inside of the limiting block (11), and the outer wall of the limiting strip (12) is fixedly connected to the outer wall of the supporting frame (1).

3. The office chair with the adjustable backrest according to claim 1, wherein the outer wall of the backrest (3) is fixedly connected with a fixed block (13), the outer wall of the fixed block (13) is fixedly connected with a sliding block (14), and a limiting plate (18) is slidably connected inside the sliding block (14).

4. The office chair with the adjustable backrest according to claim 3, wherein the sliding block (14) is internally and slidably connected with a sliding plate (15), one end of a second spring (16) is fixedly connected to the outer wall of the sliding plate (15), and the other end of the second spring (16) is fixedly connected to the inside of the sliding block (14).

5. The office chair with the adjustable backrest according to claim 4, wherein the outer wall of the sliding plate (15) is fixedly connected with a clamping block (17), and the outer wall of the clamping block (17) is slidably connected inside the limiting plate (18).

6. The office chair with the adjustable backrest of claim 5, wherein the outer wall of the limiting plate (18) is fixedly connected with a connecting column (19), a limiting groove (20) is formed in the connecting column (19), and a connecting shaft (21) is fixedly connected in the connecting column (19).

7. The office chair with the adjustable backrest according to claim 6, wherein the outer wall of the connecting shaft (21) is rotatably connected with a connecting block (22), one end of a spring III (23) is fixedly connected inside the connecting block (22), a ball (24) is fixedly connected to the other end of the spring III (23), the outer wall of the ball (24) is slidably connected inside the limiting groove (20), and the outer wall of the connecting block (22) is fixedly connected to the outer wall of the head support (25).

8. The office chair with the adjustable backrest according to claim 1, wherein the outer wall of the support frame (1) is fixedly connected with a seat (26), and the outer wall of the support frame (1) is provided with a base (27).