CN216220857U

CN216220857U - Chair back adjusting mechanism and chair thereof

Info

Publication number: CN216220857U
Application number: CN202122236719.3U
Authority: CN
Inventors: 邓建波
Original assignee: Shenzhen Microtouch Ergonomic Technology Co ltd
Current assignee: Shenzhen Microtouch Ergonomic Technology Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-04-08
Anticipated expiration: 2031-09-14
Also published as: US20230081447A1

Abstract

The utility model discloses a chair back adjusting mechanism and a chair thereof, relating to the technical field of chairs and comprising a chair back, wherein the chair back is movably arranged above a supporting surface of a chair body, and the distance between the chair back and a backrest supporting plate of the chair body can be adjusted; a connecting seat is arranged at one side of the backrest supporting plate of the chair back close to the chair body; the chair comprises a connecting seat, a chair body and an elastic piece, and is characterized by further comprising at least one group of sliding components, wherein the sliding components are used for connecting the connecting seat and a backrest supporting plate of the chair body, and the elastic piece is arranged between the connecting seat and the backrest supporting plate of the chair body. According to the utility model, the chair back and the chair body are connected by adopting the sliding assembly, the elastic support is provided by the elastic piece, so that the chair back is always kept attached to the back of a user and moves along with the user, thereby reducing the fatigue of the user and effectively relieving the waist fatigue of a person sitting for a long time.

Description

Chair back adjusting mechanism and chair thereof

Technical Field

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

Background

The chair back is used for providing the support for its back and waist when user's position of sitting state, and the back of the chair support of current chair sets up to fixed unmovable usually, thereby the user only makes the back be close to the support that the back laminating realized the back through the change of position of sitting, has certain limitation, has restricted user's position of sitting, consequently, we provide a back of chair adjustment mechanism and seat thereof.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies of the prior art, it is an object of the present invention to provide a chair back adjusting mechanism and a chair thereof, which solve the above problems in the prior art.

The purpose of the utility model can be realized by the following technical scheme: a chair back adjusting mechanism comprises a chair back, wherein the chair back is movably arranged above a supporting surface of a chair body, and the distance between the chair back and a backrest supporting plate of the chair body can be adjusted; a connecting seat is arranged on one side of the backrest supporting plate, close to the chair body, of the chair back, and the chair back is movably connected with the connecting seat;

the chair comprises a chair body and is characterized by further comprising at least one group of sliding assemblies, wherein the sliding assemblies are used for connecting a connecting seat and a backrest supporting plate of the chair body and comprise a sliding block and a sliding rail, the sliding block is connected with the sliding rail in a sliding mode and fixedly connected with the connecting seat, the sliding rail is fixedly connected with the chair body, and an anti-falling assembly is arranged on the sliding rail and used for limiting the sliding block to fall off;

the chair further comprises an elastic piece, and the elastic piece is arranged between the connecting seat and the backrest supporting plate of the chair body.

As a further scheme of the utility model, the elastic element comprises a spring, one end of the spring is fixedly clamped with the connecting seat, the other end of the spring is fixedly clamped with the clamping block, the distance between the clamping block and the cover plate is adjustable to adjust the supporting force of the chair back, and the cover plate is fixedly connected with the chair body.

As a further scheme of the utility model, the cover plate is provided with an adjusting rod, the adjusting rod is rotatably connected with the cover plate, and the clamping block is in threaded connection with the adjusting rod.

As a further aspect of the present invention, the seat further comprises a locking mechanism configured to fix the connecting seat at a fixed distance from the seat body.

A chair comprises the chair back adjusting mechanism, wherein the chair back is connected with a connecting seat in a sliding mode, the chair back vertically moves up and down along the connecting seat, and a height adjusting assembly is arranged on the connecting seat and used for adjusting the height of the chair back.

As a further scheme of the utility model, the height adjusting assembly comprises a swing rod and a limiting rod, a fan-shaped groove is formed in the side surface of the connecting seat, which is far away from the chair back, the swing rod is accommodated in the fan-shaped groove, one end of the swing rod is hinged with the connecting seat, and a torsion spring is arranged at the hinged position to keep the swing rod in a vertical state;

the side of the chair back close to one side of the connecting seat is provided with a groove, a plurality of oblique tooth grooves are arranged in the groove along the vertical direction array, the tooth grooves of the oblique tooth grooves face downwards, the limiting rod and the swing rod are far away from the hinged one end fixed connection, and the limiting rod penetrates through the connecting seat to extend and be inserted into the oblique tooth grooves.

A chair comprises the chair back adjusting mechanism, wherein the chair back is hinged with a connecting seat through a fulcrum, and swings in a vertical plane along the connecting seat within a set swing angle range.

A chair comprises the chair back adjusting mechanism, wherein a rotating shaft is arranged on the chair back in the vertical direction, and the chair back is hinged to a connecting seat through the rotating shaft.

The utility model has the beneficial effects that: the chair back is connected with the chair body through the sliding assembly, the elastic support is provided through the elastic piece, so that the chair back is always kept attached to the back of a user and moves along with the user, the fatigue feeling of the user is reduced, and the waist fatigue problem of a long-sitting person is effectively relieved; meanwhile, the supporting force of the chair back is adjusted by adjusting the compression amount of the spring, so that the use requirements of different users are met.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

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

FIG. 2 is a cross-sectional view of FIG. 1

FIG. 3 is a schematic view of the construction of the chair back of the present invention;

FIG. 4 is a schematic structural view of the height adjustment assembly of the present invention;

FIG. 5 is a schematic structural view of the internal connection assembly of the present invention;

in the figure: the chair comprises a chair back-1, a connecting seat-2, a chair body-3, a limiting bolt-4, a spring-5, a clamping block-6, an adjusting rod-7, a cover plate-8, a sliding block-11, a sliding rail-12, a groove-101, a helical tooth groove-102, a limiting support-21, a swinging rod-22, a sector groove-211, a limiting rod-221, a second sleeve-31 and a first sleeve-201.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, in an embodiment of the present invention, a chair back adjusting mechanism is provided, wherein a chair back 1 is movably disposed above a supporting surface of a chair body 3, and a distance between the chair back 1 and a backrest supporting plate of the chair body 3 is adjustable; a connecting seat 2 is arranged on one side of the chair back 1 close to the backrest supporting plate of the chair body 3, and the chair back 1 is movably connected with the connecting seat 2; the chair is characterized by further comprising a plurality of groups of sliding assemblies, each sliding assembly is used for connecting the corresponding connecting seat 2 and the corresponding backrest supporting plate of the corresponding chair body 3 and comprises a sliding block 11 and a sliding rail 12, each sliding block 11 is connected with the corresponding sliding rail 12 in a sliding mode, each sliding block 11 is fixedly connected with the corresponding connecting seat 2, each sliding rail 12 is fixedly connected with the corresponding chair body 3, and each sliding rail 12 is provided with an anti-falling assembly for limiting the corresponding sliding block 11 to fall off; the sliding fit of the sliding block 11 and the sliding rail 12 ensures the stability of the telescopic movement between the connecting seat 2 and the chair body 3, reduces the abrasion between the components, and the sliding rail 12 is provided with an anti-falling block at the tail end position to prevent the sliding block 11 from falling off.

And the elastic piece is arranged between the connecting seat 2 and the backrest support plate of the chair body 3.

During the use, back 1 supports user's back, and the elastic component makes back 1 keep the support to user's back, and when user's body took place to remove, back 1 followed the removal to keep supporting user's back all the time, reduce user's tired sense, effectively alleviate the tired problem of the waist of the personnel of sitting for a long time.

Preferably, the elastic component adopts

spring

5, 5 one ends of spring and 2 fixed joint of connecting seat, the other end and 6 fixed joint of fixture block, the adjustable holding power that is used for adjusting back of the chair 1 of distance between fixture block 6 and the apron 8, apron 8 and chair body 3 fixed connection, through the distance between regulation fixture block 6 and the apron 8, adjust spring 5's compressive capacity to the support dynamics of the adjustment back of the chair 1 satisfies different demands. In some cases, pneumatic mechanisms such as vacuum cylinders, air bags, and connecting blocks made of materials with good resilient properties may also be used.

In other embodiments, the compression amount of the spring 5 is adjusted by arranging an adjusting rod 7 on the cover plate 8, rotatably connecting the adjusting rod 7 with the cover plate 8, and connecting the fixture block 6 with the adjusting rod 7 through threads, that is, adjusting the distance between the fixture block 6 and the cover plate 8 by rotating the adjusting rod 7, so as to adjust the compression amount of the spring 5 and realize the adjustment of the supporting force, and in another embodiment, adjusting the distance between the fixture block 6 and the cover plate 8 can also be realized by adopting a cam mechanism.

In some applications, the locking mechanism is further included, the locking mechanism is configured to fix the connecting seat 2 and the chair body 3 at a fixed distance, as shown in fig. 1, the locking mechanism includes a limiting bolt 4, the limiting bolt 4 is slidably connected to the second sleeve 31, and the first sleeve 201 is provided with a plurality of limiting holes for adjusting in cooperation with the limiting of the limiting bolt 4, so that the operation is convenient.

In some application occasions, back of the chair 1 and connecting seat 2 sliding connection, back of the chair 1 is equipped with height adjusting part along the perpendicular up-and-down motion of connecting seat 2 on the connecting seat 2, and height adjusting part is used for adjusting back of the chair 1's height, is fit for different height crowds ' use, can be according to the position of user's height adjustment back of the chair 1 in order to satisfy the support to the waist.

Preferably, as shown in fig. 2 and 4, the height adjustment assembly includes a swing link 22 and a limit lever 221, a fan-shaped groove 211 is formed on a side surface of the connecting seat 2 away from the seat back 1, the swing link 22 is received in the fan-shaped groove 211, one end of the swing link 22 is hinged to the connecting seat 2, a torsion spring is disposed at the hinged position to keep the swing link 22 in a vertical state, a groove 101 is formed on a side surface of the seat back 1 close to the connecting seat 2, a plurality of oblique tooth grooves 102 are formed in the groove 101 in an array manner along a vertical direction, a tooth groove direction of the oblique tooth groove 102 faces downward, the limit lever 221 is fixedly connected with the end of the swing link 22 away from the hinged position and penetrates through the connecting seat 2 to extend into the oblique tooth grooves 102, when the position of the seat back 1 needs to be adjusted to be high, the seat back 1 is lifted upward, the limit lever 221 slides into the next tooth groove along a tooth surface of the oblique tooth groove 102 to support the seat back 1, the torsion spring disposed on the swing link 22 keeps the limit lever 221 inserted into the tooth groove 102, when the seat back 1 moves so that the stopper rod 221 moves to the lowest inclined tooth groove 102, the stopper rod 221 is disengaged from the stopper of the inclined tooth groove 102, that is, the seat back 1 can move downward.

In some use occasions, back of the chair 1 is articulated with connecting seat 2 through a fulcrum, and back of the chair 1 swings in the vertical plane according to the pivot angle within range of setting for along connecting seat 2, and when user's health left and right sides swing, back of the chair 1 follows user's motion, improves user experience comfort level.

In some use occasions, back of the chair 1 is equipped with the pivot along the vertical direction, and is articulated through the pivot between back of the chair 1 and the connecting seat 2, when the user rotates the health about, back of the chair 1 follows the user and rotates, improves the user experience comfort level.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", etc., indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the method is simple. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

It will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the spirit and scope of the utility model, and any equivalents thereto, such as those skilled in the art, are intended to be embraced therein.

Claims

1. A chair back adjusting mechanism comprises a chair back (1), and is characterized in that the chair back (1) is movably arranged above a supporting surface of a chair body (3), and the distance between the chair back (1) and a backrest supporting plate of the chair body (3) can be adjusted; a connecting seat (2) is arranged on one side, close to a backrest supporting plate of the chair body (3), of the chair back (1), and the chair back (1) is movably connected with the connecting seat (2);

the backrest connecting device is characterized by further comprising at least one group of sliding assemblies, the sliding assemblies are used for connecting the connecting seat (2) and a backrest supporting plate of the chair body (3), each sliding assembly comprises a sliding block (11) and a sliding rail (12), the sliding blocks (11) are in sliding connection with the sliding rails (12), the sliding blocks (11) are fixedly connected with the connecting seat (2), the sliding rails (12) are fixedly connected with the chair body (3), and anti-falling assemblies are arranged on the sliding rails (12) and used for limiting the sliding blocks (11) to fall off;

the chair further comprises an elastic piece, and the elastic piece is arranged between the connecting seat (2) and the backrest supporting plate of the chair body (3).

2. The chair back adjusting mechanism according to claim 1, wherein the elastic member comprises a spring (5), one end of the spring (5) is fixedly clamped with the connecting seat (2), the other end of the spring is fixedly clamped with the clamping block (6), the distance between the clamping block (6) and the cover plate (8) is adjustable to adjust the supporting force of the chair back (1), and the cover plate (8) is fixedly connected with the chair body (3).

3. The chair back adjusting mechanism according to claim 2, wherein the cover plate (8) is provided with an adjusting rod (7), the adjusting rod (7) is rotatably connected with the cover plate (8), and the clamping block (6) is in threaded connection with the adjusting rod (7).

4. The chair back adjustment mechanism according to claim 1, further comprising a locking mechanism configured to fixedly maintain the connecting seat (2) at a fixed distance from the chair body (3).

5. A chair, characterized in that, comprising the chair back adjusting mechanism of any one of claims 1-4, the chair back (1) is connected with the connecting seat (2) in a sliding way, the chair back (1) moves vertically up and down along the connecting seat (2), the connecting seat (2) is provided with a height adjusting component, and the height adjusting component is used for adjusting the height of the chair back (1).

6. The seat according to claim 5, characterized in that the height adjusting assembly comprises a swing rod (22) and a limiting rod (221), a fan-shaped groove (211) is formed in the side surface of the connecting seat (2) far away from the seat back (1), the swing rod (22) is accommodated in the fan-shaped groove (211), one end of the swing rod (22) is hinged with the connecting seat (2), and a torsion spring is arranged at the hinged position to keep the swing rod (22) in a vertical state;

offer on the side of back of the chair (1) near connecting seat (2) one side fluted (101), set up a plurality of oblique tooth's socket (102) along vertical direction array in recess (101), the tooth's socket direction of oblique tooth's socket (102) is down, articulated one end fixed connection is kept away from with pendulum rod (22) gag lever post (221) to pass connecting seat (2) and extend and insert in oblique tooth's socket (102).

7. A seat, characterized by comprising the chair back adjusting mechanism of any one of claims 1-4, wherein the chair back (1) is hinged with the connecting seat (2) through a fulcrum, and the chair back (1) swings in a vertical plane along the connecting seat (2) within a set swing angle range.

8. A chair, characterized in that, comprising the chair back adjusting mechanism of any one of claims 1-4, the chair back (1) is provided with a rotating shaft along the vertical direction, and the chair back (1) is hinged with the connecting seat (2) through the rotating shaft.