CN210581733U

CN210581733U - Chair with adjustable chair back

Info

Publication number: CN210581733U
Application number: CN201921252761.0U
Authority: CN
Inventors: 胡小明
Original assignee: Suzhou Diya Furniture Co ltd
Current assignee: Suzhou Diya Furniture Co ltd
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-05-22
Anticipated expiration: 2029-08-05

Abstract

The utility model discloses a back of the chair adjustable seat, including the back of the chair, one side of the back of the chair is provided with the bedplate, the bottom fixed mounting of bedplate has four supporting legs, the bedplate has been close to one side of the back of the chair and has been seted up first recess, slidable mounting has the movable plate in the first recess, and outside one side of movable plate extended to the bedplate, top one side of movable plate and the bottom fixed connection of the back of the chair, the second recess has been seted up to the bottom of movable plate, fixed mounting has the rack on the top inner wall of second recess, be provided with the gear in the first recess, the gear meshes with the rack mutually, one side fixed mounting of gear has the one end of. The utility model discloses simple structure, convenient operation is convenient for according to the transverse distance of the actual adjustment back of the chair with the bedplate, brings the convenience for the people that the height is different, improves the comfort level that different height personnel sat on the seat, satisfies the operation needs, is favorable to using.

Description

Chair with adjustable chair back

Technical Field

The utility model relates to the technical field of seats, especially, relate to a back of chair adjustable seat.

Background

In the design of the seat, the design of the chair back is very critical, the requirements for the chair back are different due to the difference of the sitting posture and the body shape of each person, and the existing seat with the adjustable chair back adjusts the inclination angle of the chair back.

But the horizontal distance of the back of the chair and bedplate is not convenient for adjust to current seat, brings inconvenience for the people of height difference, and in order to guarantee the comfort level, personnel learn inertia when sitting on the seat and contact the back of oneself with the back on the seat, can produce the sense of squeezing when higher people sit on the seat, and then reduced personnel's comfort level, can not satisfy the user demand, therefore we have proposed a back of the chair adjustable seat and have been used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a chair with an adjustable chair back.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a chair with an adjustable chair back comprises a chair back, wherein a seat plate is arranged on one side of the chair back, four supporting legs are fixedly mounted at the bottom of the seat plate, a first groove is formed in one side, close to the chair back, of the seat plate, a moving plate is slidably mounted in the first groove, one side of the moving plate extends out of the seat plate, one side of the top of the moving plate is fixedly connected with the bottom of the chair back, a second groove is formed in the bottom of the moving plate, a rack is fixedly mounted on the inner wall of the top of the second groove, a gear is arranged in the first groove and meshed with the rack, one end of a rotating rod is fixedly mounted on one side of the gear, the other end of the rotating rod extends out of the seat plate and is fixedly mounted with a connecting plate, a handle is arranged on one side, close to the connecting plate, of the handle is, outside the other end of rectangle slide bar runs through the rectangular hole and extends to the connecting plate, top one side fixed mounting of rectangle slide bar has the arc fixed block that is located between bedplate and the connecting plate, one side fixed mounting that the arc fixed block is close to the bedplate has a plurality of sharp pieces, one side fixed mounting that the bedplate is close to the connecting plate has circular rubber pad, and the one end that the connecting plate was kept away from to sharp piece contacts with one side that circular rubber pad is close to the connecting plate, the spout that is located rectangle slide bar top is seted up to one side that the connecting plate is close to the bedplate, one side fixed mounting that the arc fixed block is close to the connecting plate has the one end of first slide bar, and the other end of first slide bar extends to in the spout and the one end of fixed mounting a plurality of springs, and one side inner wall fixed.

Preferably, the number of the pointed blocks is two to four, and the two to four pointed blocks are arranged on one side of the arc-shaped fixing block, which is far away from the seat plate, at equal intervals.

Preferably, the number of the springs is two to four, and the two to four springs are arranged on the inner wall of the side of the sliding chute far away from the seat plate at equal intervals.

Preferably, a first limiting block is fixedly mounted on one side of the top of the first sliding rod, a first limiting groove is formed in the inner wall of the top of the sliding groove, and the first limiting block is connected with the first limiting groove in a sliding mode.

Preferably, a circular hole is formed in the inner wall of one side of the first groove, a bearing is fixedly sleeved in the circular hole, and the inner ring of the bearing is fixedly sleeved with the outer side of the rotating rod.

Preferably, a T-shaped limiting groove is formed in the inner wall of the top of the first groove, a T-shaped limiting block is fixedly mounted at the top of the moving plate, and the T-shaped limiting block is connected with the T-shaped limiting groove in a sliding mode.

Compared with the prior art, the beneficial effects of the utility model are that:

by the seat board, the first groove, the movable plate, the second groove, the rack, the gear, the rotating rod, the connecting plate, the handle, the rectangular sliding rod, the arc-shaped fixed block, the tip block, the circular rubber pad, the sliding groove, the first sliding rod and the spring which are matched, the handle is pulled, the handle drives the arc-shaped fixed block to move towards the direction far away from the seat board through the rectangular sliding rod, the arc-shaped fixed block drives the tip block to be separated from the circular rubber pad, the arc-shaped fixed block also drives the first sliding rod in the sliding groove and compresses the spring, then the handle is rotated forwards, the handle drives the connecting plate to rotate through the rectangular sliding rod, the connecting plate drives the gear to rotate through the rotating rod, the gear drives the movable plate to slide towards the direction of one side position far away from the rotating rod in the first sliding groove through the rack, the movable plate drives the seat, the first sliding rod is driven by the elastic force of the spring to reset, the first sliding rod drives the sharp block to tightly squeeze the round rubber pad to be in close contact through the arc-shaped fixed block, so that the chair back is fixed, and the effect of adjusting the transverse distance between the chair back and the seat plate is achieved.

The utility model discloses simple structure, convenient operation is convenient for according to the transverse distance of the actual adjustment back of the chair with the bedplate, brings the convenience for the people that the height is different, improves the comfort level that different height personnel sat on the seat, satisfies the operation needs, is favorable to using.

Drawings

Fig. 1 is a schematic structural view of a chair with an adjustable chair back according to the present invention;

FIG. 2 is a side cross-sectional view of the seat pan and seat back of FIG. 1;

fig. 3 is a schematic structural view of a portion a of a chair with an adjustable backrest according to the present invention;

fig. 4 is a schematic structural diagram of a part B of a chair with an adjustable chair back according to the present invention.

In the figure: the device comprises a seat plate 1, a first groove 2, a moving plate 3, a second groove 4, a rack 5, a gear 6, a rotating rod 7, a connecting plate 8, a handle 9, a rectangular sliding rod 10, an arc-shaped fixing block 11, a tip block 12, a circular rubber pad 13, a sliding chute 14, a first sliding rod 15 and a spring 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, a chair with an adjustable chair back comprises a chair back, wherein a seat plate 1 is arranged on one side of the chair back, four support legs are fixedly arranged at the bottom of the seat plate 1, a first groove 2 is formed in one side of the seat plate 1 close to the chair back, a moving plate 3 is slidably arranged in the first groove 2, one side of the moving plate 3 extends out of the seat plate 1, one side of the top of the moving plate 3 is fixedly connected with the bottom of the chair back, a second groove 4 is formed in the bottom of the moving plate 3, a rack 5 is fixedly arranged on the inner wall of the top of the second groove 4, a gear 6 is arranged in the first groove 2 and is meshed with the rack 5, one side of the gear 6 is fixedly provided with one end of a rotating rod 7, the other end of the rotating rod 7 extends out of the seat plate 1 and is fixedly provided with a connecting plate 8, a handle, one side of the connecting plate 8 close to the handle 9 is provided with a rectangular hole, the other end of the rectangular sliding rod 10 penetrates through the rectangular hole and extends out of the connecting plate 8, one side of the top of the rectangular sliding rod 10 is fixedly provided with an arc-shaped fixed block 11 positioned between the seat plate 1 and the connecting plate 8, one side of the arc-shaped fixed block 11 close to the seat plate 1 is fixedly provided with a plurality of sharp blocks 12, one side of the seat plate 1 close to the connecting plate 8 is fixedly provided with a circular rubber pad 13, one end of the sharp block 12 far away from the connecting plate 8 is contacted with one side of the circular rubber pad 13 close to the connecting plate 8, one side of the connecting plate 8 close to the seat plate 1 is provided with a sliding groove 14 positioned above the rectangular sliding rod 10, one side of the arc-shaped fixed block 11 close to the connecting plate 8 is fixedly provided with one end of a first sliding rod 15, the other end of the first, the first sliding rod 15 is slidably mounted with the chute 14, and by the seat plate 1, the first groove 2, the moving plate 3, the second groove 4, the rack 5, the gear 6, the rotating rod 7, the connecting plate 8, the handle 9, the rectangular sliding rod 10, the arc-shaped fixing block 11, the sharp block 12, the circular rubber pad 13, the chute 14, the first sliding rod 15 and the spring 16 being arranged, the handle 9 is pulled, the handle 9 drives the arc-shaped fixing block 11 to move in a direction away from the seat plate 1 through the rectangular sliding rod 10, the arc-shaped fixing block 11 drives the sharp block 12 to be separated from the circular rubber pad 13, the arc-shaped fixing block 11 also drives the first sliding rod 15 to slide in the chute 14 and compress the spring 16, the handle 9 is rotated in a forward direction, the handle 9 drives the connecting plate 8 to rotate through the rectangular sliding rod 10, the connecting plate 8 drives the gear 6 to rotate through the rotating rod 7, the gear 6 drives the moving plate 3 to slide, the movable plate 3 drives the back of the chair and removes, when the back of the chair is adjusted suitable position, not hard up handle 9, the spring 14 that is in under the compression state this moment resets, and spring 14's elasticity drives first slide bar 15 and resets, and first slide bar 15 drives the crowded circular rubber pad 13 in close contact with of sharp piece 12 through arc fixed block 11 for the back of the chair is fixed, has reached the effect of adjusting the back of the chair and the lateral distance of bedplate 1, the utility model discloses simple structure, convenient operation is convenient for according to the actual horizontal distance of adjusting the back of the chair and bedplate 1, brings the convenience for the people that the height is different, improves the comfort level that different height personnel sat on the seat, satisfies the user demand, is favorable to using.

The utility model discloses in, the quantity of sharp piece 12 is two to four, and two to four equidistant settings of sharp piece 12 keep away from one side of bedplate 1 at arc fixed block 11, the quantity of spring 16 is two to four, and two to four equidistant settings of spring 16 are on one side inner wall that bedplate 1 was kept away from at spout 14, top one side fixed mounting of first slide bar 15 has first stopper, first spacing groove has been seted up on the top inner wall of spout 14, first stopper and first spacing groove sliding connection, the circular port has been seted up on one side inner wall of first recess 2, the circular port internal fixation cover is equipped with the bearing, the inner circle of bearing and the fixed suit in the outside of dwang 7, T-shaped spacing groove has been seted up to the top inner wall of first recess 2, the top fixed mounting of movable plate 3 has T-shaped stopper, T-shaped stopper and T-shaped spacing groove sliding connection, bedplate 1 through setting, first recess 2, The movable plate 3, the second groove 4, the rack 5, the gear 6, the rotating rod 7, the connecting plate 8, the handle 9, the rectangular sliding rod 10, the arc-shaped fixed block 11, the sharp block 12, the circular rubber pad 13, the sliding groove 14, the first sliding rod 15 and the spring 16 are matched, the handle 9 is pulled, the handle 9 drives the arc-shaped fixed block 11 to move towards the direction far away from the seat plate 1 through the rectangular sliding rod 10, the arc-shaped fixed block 11 drives the sharp block 12 to be separated from the circular rubber pad 13, the arc-shaped fixed block 11 also drives the first sliding rod 15 to slide in the sliding groove 14 and compress the spring 16, then the handle 9 is rotated forwards, the handle 9 drives the connecting plate 8 to rotate through the rectangular sliding rod 10, the connecting plate 8 drives the gear 6 to rotate through the rotating rod 7, the gear 6 drives the movable plate 3 to slide towards the direction far away from the position, when the back of the chair was adjusted suitable position, not hard up handle 9, the spring 14 that is in under the compression state this moment resets, and spring 14's elasticity drives first slide bar 15 and resets, and first slide bar 15 drives the crowded tight circular rubber pad 13 in close contact with of sharp piece 12 through arc fixed block 11 for the back of the chair is fixed, has reached the effect of adjusting the back of the chair and the lateral distance of bedplate 1, the utility model discloses simple structure, convenient operation is convenient for according to the actual lateral distance who adjusts the back of the chair and bedplate 1, brings the convenience for the people that the height is different, improves the comfort level that different height personnel sat on the seat, satisfies the user demand, is favorable to using.

The working principle is as follows: when the transverse distance between the chair back and the seat board 1 needs to be adjusted, the handle 9 is pulled, the handle 9 drives the rectangular sliding rod 10 to slide in the rectangular hole in the direction far away from the seat board 1, the rectangular sliding rod 10 drives the arc-shaped fixed block 11 to move in the direction far away from the seat board 1, the arc-shaped fixed block 11 drives the sharp block 12 to move in the direction far away from the seat board 1, so that one end of the sharp block 12 far away from the connecting plate 8 is separated from one side of the circular rubber pad 13 close to the connecting plate 8, meanwhile, the arc-shaped fixed block 11 drives the first sliding rod 15 to slide in the sliding groove 14 and compress the spring 16, then the handle 9 is rotated in the forward direction, the handle 9 drives the rectangular sliding rod 10 to rotate, under the action of the rectangular hole formed on the connecting plate 8, the rectangular sliding rod 10 rotates to drive the connecting plate 8 to rotate, the rotating rod, the gear 6 rotates to drive the rack 5 to move in the first groove 2, the rack 5 drives the movable plate 3 to move in the first sliding groove 2, the movable plate 3 drives the T-shaped limiting block to slide in the T-shaped limiting groove, the movable plate 3 drives the chair back to move in the direction away from the rotating rod 7, when the chair back is adjusted to a proper position, the handle 9 is loosened, the spring 14 in a compression state resets at the moment, the elastic force of the spring 14 drives the first sliding rod 15 to reset, the first sliding rod 15 drives the arc-shaped fixed block 11 to reset, the arc-shaped fixed block 11 drives the sharp block 12 to closely contact with the circular rubber pad 13, meanwhile, the arc-shaped fixed block 11 drives the rectangular sliding rod 10 to reset, the rectangular sliding rod 10 drives the handle 9 to reset, under the matching of the sharp block 12 and the circular rubber pad 13, the chair back is fixed, and the effect of adjusting the transverse distance between the chair back.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A chair with an adjustable chair back comprises a chair back, wherein a seat board (1) is arranged on one side of the chair back, four supporting legs are fixedly mounted at the bottom of the seat board (1), the chair is characterized in that a first groove (2) is formed in one side, close to the chair back, of the seat board (1), a movable plate (3) is slidably mounted in the first groove (2), one side of the movable plate (3) extends out of the seat board (1), one side of the top of the movable plate (3) is fixedly connected with the bottom of the chair back, a second groove (4) is formed in the bottom of the movable plate (3), a rack (5) is fixedly mounted on the inner wall of the top of the second groove (4), a gear (6) is arranged in the first groove (2), the gear (6) is meshed with the rack (5), one end of a rotating rod (7) is fixedly mounted on one side of the gear (6), and the other end of the rotating rod (7) extends, one side of the connecting plate (8) far away from the seat plate (1) is provided with a handle (9), one side of the handle (9) near the connecting plate (8) is fixedly provided with one end of a rectangular sliding rod (10), one side of the connecting plate (8) near the handle (9) is provided with a rectangular hole, the other end of the rectangular sliding rod (10) penetrates through the rectangular hole and extends out of the connecting plate (8), one side of the top of the rectangular sliding rod (10) is fixedly provided with an arc-shaped fixing block (11) positioned between the seat plate (1) and the connecting plate (8), one side of the arc-shaped fixing block (11) near the seat plate (1) is fixedly provided with a plurality of sharp blocks (12), one side of the seat plate (1) near the connecting plate (8) is fixedly provided with a circular rubber pad (13), one end of the sharp block (12) far away from the connecting plate (8) is contacted with one side, one side that connecting plate (8) are close to bedplate (1) is seted up spout (14) that are located rectangle slide bar (10) top, one side fixed mounting that arc fixed block (11) are close to connecting plate (8) has the one end of first slide bar (15), and the other end of first slide bar (15) extends to in spout (14) and fixed mounting has the one end of a plurality of springs (16), and the one side inner wall fixed connection of bedplate (1) is kept away from with spout (14) to the other end of spring (16), first slide bar (15) and spout (14) slidable mounting.

2. The chair back adjustable seat as claimed in claim 1, wherein the number of the pointed blocks (12) is two to four, and the two to four pointed blocks (12) are arranged at equal intervals on one side of the arc-shaped fixing block (11) far away from the seat plate (1).

3. The chair back adjustable seat as claimed in claim 1, wherein the number of the springs (16) is two to four, and the two to four springs (16) are arranged on the inner wall of the sliding groove (14) on the side far away from the seat plate (1) at equal intervals.

4. The chair with the adjustable chair back according to claim 1, wherein a first limit block is fixedly mounted on one side of the top of the first sliding rod (15), a first limit groove is formed on the inner wall of the top of the sliding groove (14), and the first limit block is slidably connected with the first limit groove.

5. The chair with the adjustable chair back according to claim 1, characterized in that a circular hole is formed in the inner wall of one side of the first groove (2), a bearing is fixedly sleeved in the circular hole, and an inner ring of the bearing is fixedly sleeved on the outer side of the rotating rod (7).

6. The chair with the adjustable chair back according to claim 1, wherein a T-shaped limiting groove is formed in the inner wall of the top of the first groove (2), a T-shaped limiting block is fixedly mounted at the top of the moving plate (3), and the T-shaped limiting block is connected with the T-shaped limiting groove in a sliding mode.