CN217471560U - Connecting structure of seat and backrest - Google Patents

Abstract

The utility model provides a connection structure of seat and back, including linking bridge and back support, the back support rotatable with linking bridge connects be equipped with the rotation regulation structure on the back support, just the rotation regulation structure to the linking bridge direction extends be equipped with a plurality of adjustment tanks on the rotation regulation structure, just the adjustment tank sets up along the direction of rotation be equipped with regulating plate and limit structure on the linking bridge, the regulating plate can be to being close to or keeping away from the direction of adjustment tank removes, limit structure with the regulating plate is connected and is used for the restriction the removal of regulating plate. Cross the regulating plate with the adjustment tank cooperatees, and the regulating plate can stretch into in the adjustment tank of difference, in order to adjust back support with linking bridge's relative angle, the user can adjust as required back support with angle between the linking bridge to adjust the back to a comfortable angle, in order to satisfy the user to the demand of seat comfort level.

Description

Connecting structure of seat and backrest

Technical Field

The utility model relates to a seat and back connection structure's technical field, concretely relates to connection structure of seat and back.

Background

When different users sit on the chair, there are different demands to the inclination of back, or when same user sat on the chair in the scene of difference, all had the difference to the inclination's of back requirement, and in current seat link, relatively fixed between back and the seat can not adjust the angle between the relative seat of back according to user's needs, can not satisfy user's demand.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve one of the problems that exist among the prior art to a certain extent, for this reason, the utility model aims to provide a connection structure of seat and back can adjust to a comfortable angle with the back to satisfy the demand of user to the seat comfort level.

The above purpose is realized by the following technical scheme:

the utility model provides a connection structure of seat and back, includes linking bridge and back support, back support rotatable with linking bridge connects be equipped with the rotation regulation structure on the back support, just the rotation regulation structure to the linking bridge direction extends be equipped with a plurality of adjustment tanks on the rotation regulation structure, just the adjustment tank sets up along the direction of rotation be equipped with regulating plate and limit structure on the linking bridge, the regulating plate can be to being close to or keeping away from the direction of adjustment tank removes, limit structure with the regulating plate is connected and is used for the restriction the removal of regulating plate.

As a further improvement of the utility model, last fixed axle and the reset spring of being equipped with of linking bridge, rotation regulation structure one end with back leg joint, the other end with fixed axle connection, just the fixed axle passes through reset spring with linking bridge connects.

As a further improvement of the utility model, the rotation regulation structure includes connecting rod and rotating member body, connecting rod one end with back support connected, the other end to the linking bridge direction extend and with this body coupling of rotating member, the rotating member body with fixed hub connection.

As a further improvement, the rotating member is oriented toward a terminal surface of the adjusting plate, and the adjusting groove is arranged on the arc surface.

As a further improvement, the limiting structure comprises a fixing plate and a spring assembly, the fixing hole is formed in the fixing plate, the hole is formed in the adjusting plate, the spring assembly is fixed on the connecting support, and one end of the spring assembly stretches into the hole and penetrates through the hole.

As a further improvement of the present invention, a mounting frame is provided on the connecting bracket, the fixing plate is fixedly mounted on the mounting frame, and a moving space is formed between the mounting frame and the fixing plate, and the adjusting plate is movably mounted in the moving space.

As a further improvement of the utility model, the utility model further comprises a seat frame, the seat frame is rotatable with linking bridge connects, just the seat frame with linking bridge connects's one end is kept away from the back support.

As a further improvement of the utility model, the chair further comprises a combined bracket, and the combined bracket is used for connecting the backrest bracket with the seat frame.

As a further improvement of the utility model, 2-5 adjusting grooves are arranged on the arc-shaped surface.

Compared with the prior art, the utility model discloses an at least including following beneficial effect:

1. the utility model provides a connection structure of seat and back, through the regulating plate with the adjustment tank cooperatees, and the regulating plate can stretch into in the adjustment tank of difference, in order to adjust back support with linking bridge's relative angle, the user can adjust as required back support with angle between the linking bridge to adjust the back to a comfortable angle, in order to satisfy the demand of user to seat comfort level.

Drawings

FIG. 1 is a schematic view showing a structure of a connecting structure of a seat and a backrest in an embodiment;

fig. 2 is a sectional view of a connection structure of a seat and a backrest in an embodiment;

FIG. 3 is another sectional view of the coupling structure of the seat and the back in one embodiment;

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

FIG. 5 is a partial schematic view in section of a connecting structure of a seat and a backrest in an embodiment;

fig. 6 is a further structural view of a connecting structure of a seat and a back rest according to an embodiment.

Detailed Description

The present invention is illustrated by the following examples, but the present invention is not limited to these examples. To the embodiment of the present invention, modify or replace some technical features, without departing from the spirit of the present invention, it should be covered in the technical solution scope of the present invention.

As shown in fig. 1-6, a connection structure of seat and back, includes linking bridge 1 and back support 2, back support 2 rotatable with linking bridge 1 connects be equipped with rotation regulation structure 3 on back support 2, just rotation regulation structure 3 to linking bridge 1 direction extends be equipped with a plurality of adjustment grooves 322 on the rotation regulation structure 3, just adjustment groove 322 sets up along the direction of rotation be equipped with regulating plate 4 and limit structure 5 on linking bridge 1, regulating plate 4 can be to being close to or keeping away from the direction of adjustment groove 322 removes, limit structure 5 with regulating plate 4 connects and is used for the restriction regulating plate 4's removal.

When the adjusting plate 4 moves towards the direction close to the adjusting groove 322 and extends into the adjusting groove 322, the relative rotation of the rotary adjusting structure 3 can be limited, and the relative rotation of the backrest support 2 can be further limited; when the adjusting plate 4 moves away from the adjusting groove 322, the adjusting plate 4 can be disengaged from the adjusting groove 322, the rotation adjusting structure 3 can rotate relatively, and further the rotation adjusting structure 3 can rotate relatively to the backrest support 2.

The utility model provides a connection structure of seat and back, through regulating plate 4 with adjustment tank 322 cooperatees, and in adjustment tank 322 of difference can be stretched into to regulating plate 4, in order to adjust back support 2 with relative angle between linking bridge 1, the user can adjust as required back support 2 with angle between linking bridge 1 to adjust the back to a comfortable angle, in order to satisfy the demand of user to the seat comfort level.

In this embodiment, the limiting structure 5 is connected with the adjusting plate 4 to limit the adjusting plate 4 to move away from the direction of the adjusting groove 322, so that the adjusting plate 4 always keeps a state of being close to and extending into the adjusting groove 322, and the adjusting plate 4 extends into the adjusting groove 322.

The connecting bracket 1 is provided with a fixed shaft 11 and a return spring 12, one end of the rotary adjusting structure 3 is connected with the backrest bracket 2, the other end of the rotary adjusting structure is connected with the fixed shaft 11, and the fixed shaft 11 is connected with the connecting bracket 1 through the return spring 12.

In this embodiment, the backrest support 2 is connected to the connecting support 1 through the rotation adjusting structure 3, the fixing shaft 11 and the return spring 12, so that the backrest support 2 is always kept close to the connecting support 1.

In this embodiment, the return spring 12 includes a first return spring and a second return spring, and a connection point of the rotation adjusting structure 3 and the fixed shaft 11 is between the first return spring and the second return spring.

The rotation adjusting structure 3 comprises a connecting rod 31 and a rotating part body 32, one end of the connecting rod 31 is connected with the backrest support 2, the other end of the connecting rod extends towards the connecting support 1 and is connected with the rotating part body 32, and the rotating part body 32 is connected with the fixed shaft 11.

A rotating shaft is arranged between the backrest support 2 and the connecting support 1.

In this embodiment, an end surface of the rotating member body 32 facing the adjusting plate 4 is an arc-shaped surface 321, and the adjusting groove 322 is disposed on the arc-shaped surface 321. The arc-shaped surface 321 narrows from top to bottom in a direction away from the adjusting plate 4. The adjustment groove 322 is provided in a vertical direction.

2-5 adjusting grooves 322 are arranged on the arc-shaped surface 321. In this embodiment, 3 adjusting grooves 322 are provided on the arc-shaped surface 321.

In this embodiment, the connecting bracket 1 is provided with a base, the base is provided with a groove, and the lower end of the rotating member body 32 is matched with the groove, so that the rotating member body 32 can be prevented from colliding with the connecting bracket 1 in the rotating process.

Limiting structure 5 includes fixed plate 51 and spring assembly 52 be equipped with fixed orifices 511 on the fixed plate 51 be equipped with perforation 41 on the regulating plate 4, spring assembly 52 is fixed on linking bridge 1, just spring assembly 52's one end stretches into and passes perforation 41 reaches fixed orifices 511.

In this embodiment, the spring assembly 52 includes a fixed column and a torsion spring, the torsion spring is installed on the fixed column, and one end of the torsion spring sequentially extends into the through hole 41 and the fixed hole 511 from bottom to top. So as to drive the adjusting plate 4 to move relative to the adjusting slot 322 (i.e. to limit the moving distance of the adjusting plate 4 in the direction away from the adjusting slot 322) by the movement of the end of the torsion spring.

The spring assembly 52 is arranged to apply a force to the adjustment plate 4 that is always moved toward the adjustment slot 322.

In this embodiment, the fixing hole 511 extends along the front-back direction, and the length of the fixing hole 511 in the front-back direction on the fixing plate 51 can limit the distance of the front-back direction movement of the end portion of the torsion spring. It is possible to prevent the adjusting plate 4 from being excessively far away from the adjusting groove 322.

The connecting bracket 1 is provided with a mounting frame 13, the fixing plate 51 is fixedly mounted on the mounting frame 13, a moving space is formed between the mounting frame 13 and the fixing plate 51, and the adjusting plate 4 is movably mounted in the moving space. The fixing plate 51 is above the adjusting plate 4.

In this embodiment, the fixing plate 51 is fixedly connected to the mounting frame 13. The height of the moving space in the vertical direction is adapted to the thickness of the adjusting plate 4, so that the adjusting plate 4 has a guiding effect, and the adjusting plate 4 is prevented from shaking up and down in the front-back moving process.

In some embodiments, a guide rail bar is formed at an end of the fixing plate 51 facing the adjusting plate 4, and the guide rail bar is disposed on the fixing plate 51 in a front-rear direction, and a guide groove on the adjusting plate 4, which is engaged with the guide rail, is engaged with the guide groove through the guide rail bar to guide movement of the adjusting plate 4.

Still include seat frame 6, seat frame 6 rotatable with linking bridge 1 is connected, just seat frame 6 with the one end that linking bridge 1 is connected is kept away from backrest support 2.

The backrest support frame is characterized by further comprising a combined support frame 7, wherein the combined support frame 7 is used for connecting the backrest support frame 2 with the seat frame 6.

Through sectional shelf 7 will back support 2 with seat frame 6 is connected, in order to work as back support 2 is relative when linking bridge 1 rotates, drives seat frame 6 is relative linking bridge 1 rotates, and remains throughout back support 2 with the contained angle of being connected between the seat frame 6. That is, when the back bracket 2 rotates downward with respect to the link bracket 1, the seat frame 6 rotates upward with respect to the link bracket 1; when the back support frame 2 is rotated upward with respect to the link frame 1, the seat frame 6 is rotated downward with respect to the link frame 1.

The above-described preferred embodiments should be considered as examples of the embodiments of the present application, and any technical deductions, substitutions, improvements and the like, which are similar, approximate or based on the present application, should be considered as the protection scope of the present patent.

Claims (9)

1. The utility model provides a connection structure of seat and back, a serial communication port, including linking bridge and back support, back support rotatable with linking bridge connects be equipped with the rotation regulation structure on the back support, just the rotation regulation structure to the linking bridge direction extends be equipped with a plurality of adjustment grooves on the rotation regulation structure, just the adjustment groove sets up along the direction of rotation be equipped with regulating plate and limit structure on the linking bridge, the regulating plate can be to being close to or keeping away from the direction of adjustment groove removes, limit structure with the regulating plate is connected and is used for the restriction the removal of regulating plate.

2. The connecting structure for a seat and a backrest as claimed in claim 1, wherein a fixing shaft and a return spring are provided on the connecting bracket, one end of the rotation adjusting structure is connected to the backrest bracket, the other end of the rotation adjusting structure is connected to the fixing shaft, and the fixing shaft is connected to the connecting bracket through the return spring.

3. A seat and backrest connecting structure according to claim 2, wherein said rotation adjusting structure includes a connecting rod and a rotating member body, one end of said connecting rod is connected to said backrest bracket, the other end extends toward said connecting bracket and is connected to said rotating member body, and said rotating member body is connected to said fixed shaft.

4. A seat and backrest connecting structure as claimed in claim 3, wherein an end surface of said rotary body facing said adjusting plate is an arc-shaped surface on which said adjusting groove is provided.

5. The connecting structure for a chair and a backrest as claimed in claim 1, wherein the limiting structure comprises a fixing plate and a spring assembly, the fixing plate is provided with a fixing hole, the adjusting plate is provided with a through hole, the spring assembly is fixed on the connecting bracket, and one end of the spring assembly extends into and passes through the through hole and the fixing hole.

6. A seat and backrest connection structure according to claim 5, wherein a mounting bracket is provided on said connection bracket, said fixed plate is fixedly mounted on said mounting bracket, and a movement space is formed between said mounting bracket and said fixed plate, and said adjustment plate is movably mounted in said movement space.

7. The connecting structure for the seat and the backrest according to any one of claims 1 to 6, further comprising a seat frame, wherein the seat frame is rotatably connected with the connecting bracket, and one end of the seat frame connected with the connecting bracket is far away from the backrest bracket.

8. The structure for connecting a seat and a backrest according to claim 7, further comprising a combination bracket connecting the backrest bracket with the seat frame.

9. A seat and backrest connection according to claim 4, wherein 2-5 adjustment slots are provided in said arcuate surface.

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