CN220001297U - Chair back adjusting mechanism for chair - Google Patents

Abstract

The utility model belongs to the technical field of seats, in particular to a chair back adjusting mechanism for a seat, which comprises a support; the top of one group of the supports is fixedly connected with a support column; the top of the pillar is fixedly connected with a bottom plate; a pair of fixed blocks are fixedly connected to two sides of the top of the bottom plate; a hand rest is fixedly connected between the pair of fixing blocks; the side wall of the bottom plate is rotationally connected with a fixing rod, and the fixing rod penetrates through the bottom plate; a backrest is fixedly connected to the fixed rod; soft cushions are arranged on the surfaces of the bottom plate and the backrest; round posts are fixedly connected to the two ends of the fixing rod; the connecting rod is connected with the bottom plate in a rotating way, and two ends of the connecting rod penetrate through the bottom plate; the problem that the angle of the backrest is adjusted by a small angle generally, the sitting posture required by work cannot be met, and meanwhile, a comfortable lying posture can be provided for office workers during noon break, so that the office workers can only sit down for noon break, the rest quality cannot be ensured, and uncomfortable symptoms such as arm ache are caused by long-time sitting down.

Description

Chair back adjusting mechanism for chair

Technical Field

The utility model belongs to the technical field of seats, and particularly relates to a chair back adjusting mechanism for a seat.

Background

The chair is a seat with a backrest and armrests, is complex in type, corresponds to different functions, is provided with an office chair, an electronic competition chair, a leisure chair and the like, and can be used for meeting individual requirements of different users, and the angle of the chair back can be adjusted to adapt to sitting habits of different people.

In the prior art, the angle adjustment of the backrest is usually adjusted by a small angle, and the backrest can not meet the vertical sitting posture required by work, and can provide a comfortable lying posture for office workers during noon break, so that the office workers can only sit down for noon break, the rest quality can not be ensured, and uncomfortable symptoms such as arm ache and the like are caused by long-time sitting down.

Disclosure of Invention

In order to make up the defects in the prior art, the problem that the adjustment of the angle of the backrest is usually adjusted at a small angle, and the problem that the sitting posture required by work cannot be met, and meanwhile, a comfortable lying posture can be provided for office workers in noon break, so that office workers only can sit down for noon break, the resting quality cannot be ensured, and uncomfortable symptoms such as arm ache and the like are caused by long-time sitting down is solved.

The technical scheme adopted for solving the technical problems is as follows: the utility model relates to a chair back adjusting mechanism for a chair, which comprises a support; the top of one group of the supports is fixedly connected with a support column; the top of the pillar is fixedly connected with a bottom plate; a pair of fixed blocks are fixedly connected to two sides of the top of the bottom plate; a hand rest is fixedly connected between the pair of fixing blocks; the side wall of the bottom plate is rotationally connected with a fixing rod, and the fixing rod penetrates through the bottom plate; a backrest is fixedly connected to the fixed rod; soft cushions are arranged on the surfaces of the bottom plate and the backrest; round posts are fixedly connected to the two ends of the fixing rod; the connecting rod is connected with the bottom plate in a rotating way, and two ends of the connecting rod penetrate through the bottom plate; fixed hooks are fixedly connected to two ends of the connecting rod; the round column is fixed in position through the fixing piece and the bottom plate.

Preferably, the fixing member includes a fixing plate; a group of square grooves are formed in the round column, and the square grooves are matched with the fixing hooks; the side walls at two sides of the bottom plate are fixedly connected with fixing plates; the fixed plate is fixedly connected with the fixed hook through a first spring.

Preferably, the side wall of the backrest is provided with a corresponding groove; the side wall of the corresponding groove is connected with a threaded rod through a thread groove; the end part of the threaded rod is fixedly connected with a waist support; the side walls of the corresponding grooves are connected with guide posts in a sliding manner through a pair of guide grooves, and one ends of the guide posts are fixedly connected with the waist support; the side walls of the corresponding grooves are fixedly connected with the waist support through a pair of first springs, and the guide posts are positioned in the first springs.

Preferably, the side wall of the bottom plate is slidably connected with a T-shaped block through a pair of T-shaped grooves, and one vertical ends of the T-shaped blocks extend out of the T-shaped grooves and are fixedly connected with a supporting plate.

Preferably, the side wall of the bottom plate is provided with a sliding groove; a sliding plate is connected in the sliding groove in a sliding way; the opposite side walls of the sliding plate and the sliding groove are respectively provided with a clamping groove and a limiting groove; the side wall of the limit groove is fixedly connected with a clamping block through a second spring, and the clamping block corresponds to the clamping groove in position; the side wall of the clamping block is fixedly connected with a pulling block, and the pulling block penetrates through the bottom plate; an anti-falling groove is formed in the bottom of the sliding groove; the anti-falling groove is connected with an anti-falling block in a sliding way, and the anti-falling block is fixedly connected with the sliding plate.

Preferably, the cross section of the clamping block is right trapezoid; the sliding plate top is provided with a first inclined plane, and the first inclined plane corresponds to the inclined plane of the clamping block in position.

The beneficial effects of the utility model are as follows:

1. according to the chair back adjusting mechanism for the chair, the fixed hooks are manually pressed downwards to separate the fixed hooks from the square grooves in the circular columns, and then the angle of the backrest is adjusted, so that the angle of the backrest can be adjusted to be large, the backrest and the bottom plate can be in a horizontal angle for people to lie down for noon break, a comfortable sleeping posture is provided, when the noon break is finished, the fixed hooks are pressed to lift the backrest, then the circular columns and the fixed hooks are hooked, the backrest is kept at a slightly inclined angle for people to sit and stand for work, the design solves the uncomfortable conditions that office workers are inconvenient for noon break or can only lie down on a desk for noon break, and provides a comfortable posture for office workers to lie down for noon break, so that the chair back adjusting mechanism has practicability.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a partial block diagram of the present utility model;

FIG. 3 is a top cross-sectional view of the present utility model;

FIG. 4 is an enlarged view at A in FIG. 3;

FIG. 5 is an enlarged view at B in FIG. 3;

FIG. 6 is a partial cross-sectional view of the structure of the present utility model;

FIG. 7 is a perspective view of the present utility model;

FIG. 8 is an enlarged view of FIG. 7 at C;

in the figure: 1. a support; 2. a support post; 3. a bottom plate; 4. a hand support; 5. a fixed rod; 6. a backrest; 7. a circular column; 8. a connecting rod; 9. a fixed hook; 10. square grooves; 11. a fixing plate; 12. corresponding grooves; 13. a threaded rod; 14. a waist support; 15. a guide post; 16. a T-shaped groove; 17. a T-shaped block; 18. a support plate; 19. a sliding groove; 20. a sliding plate; 21. a clamping groove; 22. a limit groove; 23. a clamping block; 24. pulling the block; 25. an anti-drop groove; 26. an anti-falling block; 27. a first inclined surface.

Detailed Description

The utility model is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1 to 8, a chair back adjusting mechanism for a chair according to an embodiment of the present utility model includes a support 1; the top of one group of the supports 1 is fixedly connected with a support column 2; the top of the support column 2 is fixedly connected with a bottom plate 3; a pair of fixed blocks are fixedly connected to two sides of the top of the bottom plate 3; a hand rest 4 is fixedly connected between the pair of fixing blocks; the side wall of the bottom plate 3 is rotatably connected with a fixed rod 5, and the fixed rod 5 penetrates through the bottom plate 3; a backrest 6 is fixedly connected to the fixed rod 5; soft cushions are arranged on the surfaces of the bottom plate 3 and the backrest 6; round posts 7 are fixedly connected to the two ends of the fixed rod 5; a connecting rod 8 is connected with the bottom plate 3 in a rotating way, and two ends of the connecting rod 8 penetrate through the bottom plate 3; both ends of the connecting rod 8 are fixedly connected with fixed hooks 9; the round column 7 is fixed in position through the fixing piece and the bottom plate 3; during operation, the fixing hooks 9 are manually pressed downwards to separate the fixing hooks 9 from the square grooves 10 in the circular columns 7, and then the angle of the backrest 6 is adjusted, so that the adjustable angle is large, the backrest 6 can be horizontally angled with the bottom plate 3 to enable a person to lie down for noon break, a comfortable sleeping posture is provided, when noon break ends, the fixing hooks 9 are pressed to lift the backrest 6, then the circular columns 7 and the fixing hooks 9 are hooked to keep the angle of the backrest 6 slightly inclined to enable the person to sit for work, the design solves the uncomfortable situations that the office worker is inconvenient for noon break or can only lie down on a desk for noon break, and provides a comfortable posture for the office worker to lie down for noon break, so that the device has practicability.

The fixing piece comprises a fixing plate 11; a group of square grooves 10 are formed in the round column 7, and the square grooves 10 are matched with the fixing hooks 9; the side walls of the two sides of the bottom plate 3 are fixedly connected with fixing plates 11; the fixed plate 11 is fixedly connected with the fixed hook 9 through a first spring; during operation, the fixing hooks 9 are separated from the square grooves 10 by pressing the fixing hooks 9, then the angle of the backrest 6 is adjusted, after the backrest 6 is finished, the fixing hooks 9 are hooked with the square grooves 10, the backrest 6 and the bottom plate 3 are fixed in angle, and the angle adjustment is finished.

The side wall of the backrest 6 is provided with a corresponding groove 12; the side wall of the corresponding groove 12 is connected with a threaded rod 13 through a thread groove; the end part of the threaded rod 13 is fixedly connected with a waist support 14; the side walls of the corresponding grooves 12 are slidably connected with guide posts 15 through a pair of guide grooves, and one ends of the guide posts 15 are fixedly connected with the waist support 14; the side walls of the corresponding grooves 12 are fixedly connected with the waist support 14 through a pair of first springs, and the guide posts 15 are positioned in the first springs; when the waist support device works, the depth of the waist support 14 extending out of the corresponding groove 12 can be adjusted by rotating the threaded rod 13, so that the supporting distance of the waist support 14 to the waist is further solved, different using habits of different using groups are used, and the waist support 14 has a substantial use.

The side wall of the bottom plate 3 is slidably connected with a T-shaped block 17 through a pair of T-shaped grooves 16, and one vertical end of each T-shaped block 17 extends out of the T-shaped groove 16 and is fixedly connected with a supporting plate 18; when the chair is in operation, the supporting plate 18 is pulled out, and then the T-shaped groove 16 at the sliding position of the T-shaped block 17 is driven, so that after the backrest 6 is completely laid down, the supporting plate 18 provides supporting force for a sleeping person, the situation that the chair and the person are overturned due to unstable gravity after the sleeping person falls down is avoided, and the use safety is ensured.

The side wall of the bottom plate 3 is provided with a sliding groove 19; a sliding plate 20 is slidably connected in the sliding groove 19; the opposite side walls of the sliding plate 20 and the sliding groove 19 are respectively provided with a clamping groove 21 and a limiting groove 22; the side wall of the limit groove 22 is fixedly connected with a clamping block 23 through a second spring, and the clamping block 23 corresponds to the clamping groove 21 in position; the side wall of the clamping block 23 is fixedly connected with a pulling block 24, and the pulling block 24 penetrates through the bottom plate 3; an anti-falling groove 25 is formed in the bottom of the sliding groove 19; the anti-falling groove 25 is connected with an anti-falling block 26 in a sliding way, and the anti-falling block 26 is fixedly connected with the sliding plate 20; when the sliding plate is in operation, the clamping block 23 is separated from the position limitation of the clamping groove 21 by pulling the pulling column, then the sliding plate 20 is pulled out of the sliding groove 19, so that a leg support can be provided for a sleeping person, the sleeping posture is more comfortable, and after the sliding plate 20 is used, the sliding plate is fixed in the sliding groove 19, so that the sliding plate is simple to operate and safe and stable to use.

The cross section of the clamping block 23 is right trapezoid; the top of the sliding plate 20 is provided with a first inclined plane 27, and the first inclined plane 27 corresponds to the inclined plane of the clamping block 23 in position; when the clamping device works, the clamping block 23 is in a right trapezoid shape, so that when the first inclined plane 27 extrudes the inclined plane of the clamping block 23, the clamping groove 21 and the clamping block 23 can be directly clamped, the situation of pulling a pulling column is avoided, and the operation steps are simplified.

Working principle: the fixed hook 9 is manually pressed downwards to separate the fixed hook 9 from the square groove 10 in the circular column 7, then the angle of the backrest 6 is adjusted, the angle of the backrest 6 can be adjusted to be large, the backrest 6 can be in a horizontal angle with the bottom plate 3, so that a user can lie down for noon break, a comfortable sleeping posture is provided, when the noon break is finished, the fixed hook 9 is pressed, the backrest 6 is lifted, then the circular column 7 and the fixed hook 9 are hooked, the backrest 6 is kept at a slightly inclined angle for sitting and standing, the design solves the uncomfortable condition that the office worker is inconvenient for noon break or can only lie on a desk for noon break, provides a comfortable posture for the office worker to lie down for noon break, has practicability, after the fixed hook 9 is pressed to separate from the square groove 10, then the angle of the backrest 6 is adjusted, the fixed hook 9 and the square groove 10 are hooked after the noon break is finished, the backrest 6 and the bottom plate 3 are fixed in angle to finish angle adjustment, the waist support 14 is extended to the depth corresponding to the groove 12 by rotating the threaded rod 13, the supporting distance of the waist support 14 to the waist is further solved, different using habits of different users are used, the waist support 14 has a substantial use, the supporting plate 18 is pulled out to drive the T-shaped groove 16 at the sliding position of the T-shaped block 17, after the backrest 6 is completely put down, the supporting plate 18 provides supporting force for a sleeping person, the situation that the chair and the person are overturned due to unstable gravity center after sleeping is avoided, the use safety is ensured, the clamping block 23 is separated from the position limitation of the clamping groove 21 by pulling the pulling column, then the sliding plate 20 is pulled out of the sliding groove 19, the leg support can be provided for the sleeping person, the sleeping posture is more comfortable, after the sleeping person is finished, the sliding plate 20 is fixed in the sliding groove 19, the operation is simple, the use is safe and stable, and through setting up of the clamping block 23 for right trapezoid, can make when the first inclined plane 27 extrudes the clamping block 23 inclined plane, directly can make clamping groove 21 and clamping block 23 looks screens, avoided pulling the condition of pulling the post, simplified the operation procedure.

The front, rear, left, right, up and down are all based on fig. 1 in the drawings of the specification, the face of the device facing the observer is defined as front, the left side of the observer is defined as left, and so on, according to the viewing angle of the person.

In the description of the present utility model, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present utility model.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (5)

1. The utility model provides a back of chair adjustment mechanism for seat which characterized in that: comprises a support (1); the top of one group of the supports (1) is fixedly connected with a support column (2); a bottom plate (3) is fixedly connected to the top of the support column (2); a pair of fixed blocks are fixedly connected to two sides of the top of the bottom plate (3); a hand rest (4) is fixedly connected between the pair of fixed blocks; the side wall of the bottom plate (3) is rotatably connected with a fixed rod (5), and the fixed rod (5) penetrates through the bottom plate (3); a backrest (6) is fixedly connected to the fixed rod (5); soft cushions are arranged on the surfaces of the bottom plate (3) and the backrest (6); round posts (7) are fixedly connected to the two ends of the fixed rod (5); the connecting rod (8) is rotationally connected to the bottom plate (3), and two ends of the connecting rod (8) penetrate through the bottom plate (3); both ends of the connecting rod (8) are fixedly connected with fixing hooks (9); the round column (7) is fixed in position through the fixing piece and the bottom plate (3).

2. A chair back adjustment mechanism for a chair as claimed in claim 1, wherein: the fixing piece comprises a fixing plate (11); a group of square grooves (10) are formed in the round column (7), and the square grooves (10) are matched with the fixing hooks (9); the side walls at two sides of the bottom plate (3) are fixedly connected with fixing plates (11); the fixing plate (11) is fixedly connected with the fixing hook (9) through a first spring.

3. A chair back adjustment mechanism for a chair as claimed in claim 2, wherein: the side walls of the bottom plate (3) are slidably connected with T-shaped blocks (17) through a pair of T-shaped grooves (16), and the vertical ends of the T-shaped blocks (17) extend out of the T-shaped grooves (16) and are fixedly connected with a supporting plate (18).

4. A chair back adjustment mechanism according to claim 3, wherein: a sliding groove (19) is formed in the side wall of the bottom plate (3); a sliding plate (20) is connected in a sliding way in the sliding groove (19); the opposite side walls of the sliding plate (20) and the sliding groove (19) are respectively provided with a clamping groove (21) and a limiting groove (22); the side wall of the limiting groove (22) is fixedly connected with a clamping block (23) through a second spring, and the clamping block (23) corresponds to the clamping groove (21); a pulling block (24) is fixedly connected to the side wall of the clamping block (23), and the pulling block (24) penetrates through the bottom plate (3); an anti-falling groove (25) is formed in the bottom of the sliding groove (19); the anti-falling groove (25) is connected with an anti-falling block (26) in a sliding way, and the anti-falling block (26) is fixedly connected with the sliding plate (20).

5. A chair back adjustment mechanism for a chair as claimed in claim 4, wherein: the cross section of the clamping block (23) is a right trapezoid; the top of the sliding plate (20) is provided with a first inclined plane (27), and the first inclined plane (27) corresponds to the inclined plane of the clamping block (23).