Chair with adjustable waist support position

Abstract

The utility model discloses a chair with an adjustable waist support position, and relates to the technical field of chairs, the chair comprises a chair seat and a chair back, an adjusting mechanism is arranged in the chair back, the adjusting mechanism comprises a sliding rod, an adjusting plate, a first threaded rod, an extrusion block and an extrusion plate, and the outer wall of the sliding rod is slidably connected with the inner wall of the adjusting plate; the inner wall of the adjusting plate is in threaded connection with the outer wall of a first threaded rod, one end of the first threaded rod is rotationally connected with one side of an extrusion block through a bearing, the other side of the extrusion block makes extrusion contact with one side of an extrusion plate, the other side of the extrusion plate makes extrusion contact with a backrest, and a telescopic rod is fixedly installed at one end of the adjusting plate. And a bearing plate is fixedly mounted at one end of the telescopic rod. According to the chair, the angle of the backrest can be quickly and conveniently adjusted, the problem that a user cannot be effectively protected due to the fact that adjustment cannot be quickly and conveniently performed in actual use is solved, and the working efficiency of the chair is improved.

Description

Technical Field

[0001] The present application relates to the technical field of chairs, and in particular to a chair with an adjustable waist protection position. Background Art

[0002] Chairs are daily furniture for people to work and study. When people sit for long periods of time, the human spine has a natural curvature, especially the curvature at the lumbar spine. Sitting for a long time can easily cause the lumbar spine to bend outward, which can easily lead to lumbar diseases such as lumbar disc herniation over time, so a backrest is needed for protection.

[0003] When the backrest of the existing chair is in use, the angle of the backrest and the position contacting the waist cannot be adjusted, so that in actual use, it cannot be adjusted quickly and conveniently, resulting in the user being unable to obtain effective protection. Utility Model Content

[0004] The purpose of the utility model is to solve or at least alleviate the problems existing in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A chair with adjustable lumbar support, comprising a seat and a backrest, wherein an adjustment mechanism is arranged inside the backrest, wherein the adjustment mechanism comprises a slide bar, an adjustment plate, a threaded rod, an extrusion block, and an extrusion plate, wherein the outer wall of the slide bar is slidably connected to the inner wall of the adjustment plate, the inner wall of the adjustment plate is threadedly connected to the outer wall of the threaded rod, one end of the threaded rod is rotatably connected to one side of the extrusion block through a bearing, the other side of the extrusion block is in extrusion contact with one side of the extrusion plate, the other side of the extrusion plate is in extrusion contact with a backrest, a telescopic rod is fixedly installed at one end of the adjustment plate, a bearing plate is fixedly installed at one end of the telescopic rod, and a limit rod is fixedly installed at one side of the bearing plate;

[0007] An auxiliary mechanism is arranged on one side of the chair back.

[0008] Optionally, there are two slide rods, which are symmetrically distributed on the inner side of the chair back. The adjustment plate is T-shaped, and the extrusion plate is made of deformable metal, so that the backrest can be better extruded and the angle of the backrest can be adjusted quickly and conveniently.

[0009] Optionally, the backrest is made of memory foam, there are two telescopic rods, which are symmetrically distributed at both ends of the adjustment plate, and there are two bearing plates, which are symmetrically distributed at one end of the two telescopic rods, so that the angle of the backrest can be better adjusted and the user can use it better.

[0010] Optionally, a limiting hole is provided on the inner side of the chair back, and there are several limiting holes. One end of the limiting rod is in squeeze contact with the inner wall of the limiting hole. A spring is fixedly installed between one side of the supporting plate and one end of the adjusting plate. There are two springs, which are symmetrically distributed at both ends of the adjusting plate, so that the height of the backrest can be better adjusted and it is more convenient to use.

[0011] Optionally, a movable groove is opened on one side of the chair back, one end of the mounting plate is slidably connected to the inner wall of the movable groove, the mounting plate is L-shaped, the number of the mounting plates is two, and the mounting plates are symmetrically distributed on both sides of the chair back, thereby effectively increasing the stability of the backrest when moving.

[0012] Optionally, the number of connecting plate 1 and connecting plate 2 is two, and the connecting plate 1 and connecting plate 2 form a group, and the connecting plate 1 and connecting plate 2 are symmetrically distributed on one side of the two mounting plates, and the number of threaded rod 2 is two, and the threaded rod 2 is symmetrically distributed on the inner walls of the two connecting plates 1, so that the backrest can be disassembled and assembled quickly and conveniently, and can be better replaced or cleaned.

[0013] Optionally, one side of the seat is fixedly connected to one side of the chair back, the inner wall of the chair back is fixedly connected to both ends of the sliding rod, and the extrusion plate, the inner wall of the backrest and the two outer walls of the threaded rod are threadedly connected.

[0014] In summary, the beneficial effects of this application are as follows:

[0015] The present application realizes the ability to quickly and conveniently adjust the angle of the backrest through an adjustment mechanism installed inside the chair back, thereby solving the problem that the user cannot be effectively protected due to the inability to quickly and conveniently adjust the backrest during actual use, thereby improving the working efficiency of the chair;

[0016] The present application achieves the ability to increase the stability of the backrest when it moves by installing an auxiliary mechanism on one side of the chair back, thereby enabling better adjustment of the backrest, and enabling the backrest to be quickly and conveniently disassembled and assembled, thereby enabling better use by different operators, thereby improving the convenience of the chair. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of this application;

[0018] Figure 2 It is a side view structural diagram of the present application;

[0019] Figure 3 It is a schematic diagram of the structure of the regulatory mechanism of this application;

[0020] Figure 4 This application Figure 3 A is an enlarged structural diagram;

[0021] Figure 5 It is a schematic diagram of the auxiliary mechanism structure of this application.

[0022] Explanation of the reference numerals in the accompanying drawings: 1. Seat; 2. Backrest; 3. Adjustment mechanism; 301. Sliding rod; 302. Adjustment plate; 303. Threaded rod one; 304. Extrusion block; 305. Extrusion plate; 306. Backrest; 307. Telescopic rod; 308. Load-bearing plate; 309. Limit rod; 4. Auxiliary mechanism; 401. Mounting plate; 402. Connecting plate one; 403. Threaded rod two; 404. Connecting plate two. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-5 This application is described in further detail.

[0024] See also Figure 1-5 A chair with adjustable lumbar support position, comprising a seat 1 and a backrest 2, wherein an adjustment mechanism 3 is arranged inside the backrest 2, wherein the adjustment mechanism 3 comprises a slide bar 301, an adjustment plate 302, a threaded rod 303, an extrusion block 304, and an extrusion plate 305, wherein the outer wall of the slide bar 301 is slidably connected with the inner wall of the adjustment plate 302, the inner wall of the adjustment plate 302 is threadedly connected with the outer wall of the threaded rod 303, one end of the threaded rod 303 is rotatably connected with one side of the extrusion block 304 through a bearing, the other side of the extrusion block 304 is in extrusion contact with one side of the extrusion plate 305, and the other side of the extrusion plate 305 is in extrusion contact with a backrest 306, a telescopic rod 307 is fixedly installed at one end of the adjustment plate 302, a bearing plate 308 is fixedly installed at one end of the telescopic rod 307, and a limit rod 309 is fixedly installed at one side of the bearing plate 308;

[0025] In this embodiment, there are two slide bars 301, which are symmetrically distributed on the inner side of the chair back 2. The adjustment plate 302 is T-shaped, and the extrusion plate 305 is made of deformable metal, so that the backrest 306 can be better extruded and the angle of the backrest 306 can be adjusted quickly and conveniently.

[0026] Furthermore, the backrest 306 is made of memory foam, there are two telescopic rods 307, which are symmetrically distributed at both ends of the adjustment plate 302, and there are two bearing plates 308, which are symmetrically distributed at one end of the two telescopic rods 307, so that the angle of the backrest 306 can be better adjusted, and the user can use it better;

[0027] Furthermore, a limiting hole is provided on the inner side of the chair back 2, and the number of the limiting holes is several. One end of the limiting rod 309 is pressed and contacted with the inner wall of the limiting hole. A spring is fixedly installed between one side of the bearing plate 308 and one end of the adjustment plate 302. The number of the springs is two, and the springs are symmetrically distributed at both ends of the adjustment plate 302, so that the height of the backrest 306 can be better adjusted, which is more convenient to use.

[0028] Furthermore, one side of the seat 1 is fixedly connected to one side of the backrest 2, the inner wall of the backrest 2 is fixedly connected to both ends of the slide rod 301, and the inner wall of the extrusion plate 305 and the backrest 306 are threadedly connected to the outer wall of the threaded rod 403.

[0029] An auxiliary mechanism 4 is provided on one side of the chair back 2;

[0030] The auxiliary mechanism 4 includes a mounting plate 401, a connecting plate 1 402, a threaded rod 2 403, and a connecting plate 2 404. One side of the mounting plate 401 is fixedly connected to one end of the connecting plate 1 402. The inner wall of the connecting plate 1 402 is threadedly connected to the outer wall of the threaded rod 2 403. The outer wall of the threaded rod 2 403 is threadedly connected to the inner wall of the connecting plate 2 404. One end of the connecting plate 2 404 is fixedly connected to one side of the mounting plate 401.

[0031] In this embodiment, a moving groove is provided on one side of the chair back 2, and one end of a mounting plate 401 is slidably connected to the inner wall of the moving groove. The mounting plate 401 is L-shaped, and there are two mounting plates 401. The mounting plates 401 are symmetrically distributed on both sides of the chair back 2, thereby effectively increasing the stability of the backrest 306 when moving.

[0032] Furthermore, there are two connecting plates 1 402 and 404, and one connecting plate 1 402 and one connecting plate 2 404 form a group. The connecting plates 1 402 and 404 are symmetrically distributed on one side of the two mounting plates 401, and there are two threaded rods 403, and the threaded rods 403 are symmetrically distributed on the inner walls of the two connecting plates 1 402, so that the backrest 306 can be disassembled and assembled quickly and conveniently, and can be better replaced or cleaned.

[0033] The implementation principle of the present application is as follows: when it is needed, the user directly uses it; when it is needed to adjust the angle of the backrest 306, the operator drives the squeezing block 304 to move by rotating the threaded rod 303, and the squeezing plate 305 can be squeezed by the movement of the squeezing block 304, so that the squeezing plate 305 can be deformed, and the squeezing plate 305 can be deformed to squeeze the backrest 306, so that the angle of the backrest 306 can be adjusted, which is more convenient for the user to use; when it is necessary to adjust the height of the backrest 306, the telescopic rod 307 is squeezed and extended by pulling the carrying plate 308, and the telescopic rod 307 is extended and retracted. The movement of the bearing plate 308 can squeeze the spring, and as the bearing plate 308 moves, the limiting rod 309 can be pulled out of the limiting hole. At this time, pulling the adjustment plate 302 to move can make the adjustment plate 302 slide on the slide bar 301, and as the adjustment plate 302 slides, the backrest 306 can be driven to move, and as the backrest 306 moves, the mounting plate 401 can be driven to slide in the moving groove, so that the height of the backrest 306 can be adjusted. When the adjustment is completed, the bearing plate 308 is released, and the bearing plate 308 is reset by the elastic force of the spring, so that the limiting rod 309 is reinserted into the limiting hole, and the fixing is completed, which is more convenient to use.

[0034] When the height of the backrest 306 needs to be adjusted, the mounting plate 401 will slide in the movable groove, thereby increasing the stability of the backrest 306 when moving. When the backrest 306 needs to be replaced or cleaned after being used for a long time, the operator can rotate the threaded rod 403 to move the threaded rod 403 to pull out the connecting plate 404, the backrest 306, and the extrusion plate 305, so that the backrest 306 can be removed for replacement or cleaning. When installation is required, the above steps can be repeated.

[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A chair with an adjustable waist support position, comprising a seat (1) and a backrest (2), characterized in that: An adjustment mechanism (3) is arranged inside the chair back (2), and the adjustment mechanism (3) comprises a sliding rod (301), an adjustment plate (302), a threaded rod (303), an extrusion block (304), and an extrusion plate (305); the outer wall of the sliding rod (301) is slidably connected to the inner wall of the adjustment plate (302); the inner wall of the adjustment plate (302) is threadedly connected to the outer wall of the threaded rod (303); one end of the threaded rod (303) is rotatably connected to one side of the extrusion block (304) via a bearing; the other side of the extrusion block (304) is in extrusion contact with one side of the extrusion plate (305); the other side of the extrusion plate (305) is in extrusion contact with a backrest (306); a telescopic rod (307) is fixedly mounted on one end of the adjustment plate (302); a bearing plate (308) is fixedly mounted on one end of the telescopic rod (307); a limiting rod (309) is fixedly mounted on one side of the bearing plate (308); An auxiliary mechanism (4) is provided on one side of the chair back (2).

2. The chair with adjustable waist support position according to claim 1, characterized in that: The auxiliary mechanism (4) comprises a mounting plate (401), a connecting plate 1 (402), a threaded rod 2 (403), and a connecting plate 2 (404); one side of the mounting plate (401) is fixedly connected to one end of the connecting plate 1 (402); the inner wall of the connecting plate 1 (402) is threadedly connected to the outer wall of the threaded rod 2 (403); the outer wall of the threaded rod 2 (403) is threadedly connected to the inner wall of the connecting plate 2 (404); and one end of the connecting plate 2 (404) is fixedly connected to one side of the mounting plate (401).

3. The chair with adjustable waist support position according to claim 1, characterized in that: The number of the sliding rods (301) is two, and the sliding rods (301) are symmetrically distributed on the inner side of the chair back (2). The shape of the adjustment plate (302) is T-shaped, and the material of the extrusion plate (305) is deformable metal.

4. The chair with adjustable waist support position according to claim 1, characterized in that: The backrest (306) is made of memory foam material, the number of the telescopic rods (307) is two, and the telescopic rods (307) are symmetrically distributed at both ends of the adjustment plate (302), and the number of the bearing plates (308) is two, and the bearing plates (308) are symmetrically distributed at one end of the two telescopic rods (307).

5. The chair with adjustable waist support position according to claim 1, characterized in that: A limiting hole is provided on the inner side of the chair back (2), the limiting holes being in a plurality of numbers, one end of the limiting rod (309) is in extrusion contact with the inner wall of the limiting hole, a spring is fixedly installed between one side of the bearing plate (308) and one end of the adjustment plate (302), the springs being in a plurality of numbers and symmetrically distributed at both ends of the adjustment plate (302).

6. The chair with adjustable waist support position according to claim 2, characterized in that: A movable groove is provided on one side of the chair back (2); one end of the mounting plate (401) is slidably connected to the inner wall of the movable groove; the mounting plate (401) is L-shaped; there are two mounting plates (401), which are symmetrically distributed on both sides of the chair back (2).

7. The chair with adjustable waist support position according to claim 2, characterized in that: The number of the connecting plate one (402) and the connecting plate two (404) is two, and the connecting plate one (402) and the connecting plate two (404) form a group. The connecting plate one (402) and the connecting plate two (404) are symmetrically distributed on one side of the two mounting plates (401), and the number of the threaded rod two (403) is two, and the threaded rod two (403) are symmetrically distributed on the inner walls of the two connecting plates one (402).

8. The chair with adjustable waist support position according to claim 1, characterized in that: One side of the seat (1) is fixedly connected to one side of the chair back (2); the inner wall of the chair back (2) is fixedly connected to both ends of the slide rod (301); and the extrusion plate (305) and the inner wall of the backrest (306) are threadedly connected to the outer wall of the second threaded rod (403).

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