Waist support mechanism convenient to quickly adjust and used for seat

Abstract

The utility model discloses a waist support mechanism convenient to adjust quickly for a seat. The waist support mechanism comprises a connecting plate, an adjusting assembly, a waist support plate and a front cushion, the adjusting assembly is arranged in the middle of the front side of the connecting plate and comprises a connecting seat connected with the connecting plate, elastic supporting seats arranged on the two sides of the connecting seat in a sliding mode and an adjusting seat connected to the outer side of the connecting seat in a sleeving mode, and the two sides of the adjusting seat and the supporting seats are fixed together; and movable supporting rods capable of rotating are arranged in concave cavities in the upper side and the lower side of the connecting seat. According to the waist supporting mechanism convenient to adjust quickly for the seat, the height of the waist supporting plate can be adjusted only through push-pull operation, when the waist supporting plate is adjusted to the highest state, the waist supporting plate can be used when a user sits on the back, when the waist supporting plate is adjusted to the lowest state, the waist supporting plate can be used when the user lies down, the height of the waist supporting plate is reduced, and the situation that the waist supporting plate is too high when the user lies down is avoided; it is ensured that the waist of the user can be comfortably supported after the user lies down, and the use requirements of the user are met.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a lumbar support mechanism for seats which is convenient for rapid adjustment. Background Art

[0002] Chairs are a type of furniture that is widely used in daily life and work. They usually include a base, backrest, support structure, armrests and other parts. In order to meet people's personalized needs and bring a more comfortable and healthy use experience, the structure and function of the chair are constantly improving. When users use chairs, they often rely on the base and backrest to support their hips and back, while the support of the waist is relatively weak. The muscles and spine of the waist and back of the human body will bear the pressure of the upper body weight. In the long run, lumbar muscle strain and spinal lesions will occur, causing inconvenience to people in learning, life and work.

[0003] In recent years, in order to provide support for the waist, seats with lumbar supports are appearing on the market. The lumbar support is connected to the backrest to provide good support for the user's waist, so that the user can sit upright and have a good protective function for the lumbar spine. However, the existing lumbar supports are difficult to adjust. After the user leans back and lies down, the lumbar support is too high, causing uncomfortable support. The user can only remove it and put it back after sitting up, which cannot meet the user's needs. To solve this problem, we have developed a lumbar support mechanism for seats that is easy to adjust quickly. Utility Model Content

[0004] The utility model aims to solve the technical problems in the prior art and proposes a lumbar support mechanism for a seat which is convenient for rapid adjustment.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a lumbar support mechanism for a seat that is easy to adjust quickly, comprising: a connecting plate, an adjustment component, a lumbar support plate and a front pad; the adjustment component is arranged at the middle part of the front side of the connecting plate, the adjustment component comprises a connecting seat connected to the connecting plate, a support seat slidably arranged on both sides of the connecting seat and with elasticity, and an adjustment seat sleeved on the outside of the connecting seat, the two sides of the adjustment seat are fixed together with the support seat, the concave cavities on the upper and lower sides of the connecting seat are provided with rotatable moving support rods, and the ends of the moving support rods are provided with spring pins, and the upper and lower sides of the inner cavity of the adjusting seat are provided with spring pins. A track groove is opened on both sides, the track groove is annular, and the front side of the track groove is in a forward protruding arc shape, the rear side is in a forward concave arc shape, and the two sides are arranged in straight lines, the spring pin at the end of the motion support rod is against the bottom wall of the track groove, and the middle part of the front end and the middle part of the rear end of the track groove are both provided with a concave groove, one side of the concave groove is smoothly transitioned to the bottom wall of one side of the track groove, and the other side is disconnected from the bottom wall of the other side of the track groove, and an inclined guide block is arranged in the concave groove at the rear end, and a concave cavity is formed between the inclined guide block and the bottom wall of one side of the track groove; the lumbar support plate is detachably arranged on the front side of the support seat; the front pad is pasted on the front side of the lumbar support plate.

[0006] In a preferred embodiment, sliding grooves are provided on both sides of the connecting seat, a connecting slide is provided on the inner side of the supporting seat, the connecting slide is adapted to be slidably arranged in the sliding groove, a spring is provided on the front side of the connecting slide, and the front end of the spring is installed on the front side of the sliding groove.

[0007] In a preferred embodiment, a connecting piece with an I-shaped cross section is provided on the front side of the support seat by means of bolts, and the lumbar support plate is installed on the front side of the connecting piece by means of bolts.

[0008] In a preferred embodiment, a groove is provided in the middle of the front side of the lumbar support plate, and the lumbar support plate is installed together with the connecting member by bolts passing through the groove.

[0009] In a preferred embodiment, one side of the track groove is provided with an opening extending out of the adjustment seat.

[0010] In a preferred embodiment, the connecting plate is arranged in a concave shape, and mounting holes are provided on both sides of the connecting plate.

[0011] In a preferred embodiment, a backrest inner frame is provided on the outer side of the connecting plate.

[0012] Compared with the prior art, the utility model provides a lumbar support mechanism for a seat that is easy to adjust quickly. Through the cooperation between the connecting seat, the moving support rod, the supporting seat, the spring, the adjusting seat and the track groove in the adjustment component, the height of the lumbar support plate can be adjusted by only pushing and pulling operations. When the lumbar support plate is adjusted to the highest state, it can be used by the user to sit and lean back. When the lumbar support plate is adjusted to the lowest state, it can be used by the user to lie down, thereby lowering the height of the lumbar support plate to avoid the lumbar support plate being too high when the user lies down, ensuring that the user's waist can be comfortably supported after lying down, thereby meeting the user's usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 It is an exploded view of the adjustment component in the utility model;

[0015] Figure 3 It is a schematic diagram of a three-dimensional cross-sectional structure between the connecting seat and the adjusting seat in the utility model;

[0016] Figure 4 It is a three-dimensional cross-sectional structural schematic diagram of the adjustment seat in the utility model.

[0017] In the figure: 1, connecting plate; 2, adjusting assembly; 21, connecting seat; 21a, moving support rod; 21b, slide groove; 22, supporting seat; 22a, connecting slide plate; 22b, spring; 22c, connecting piece; 23, adjusting seat; 23a, track groove; 23b, inclined guide block; 23c, concave cavity; 3, backrest inner frame; 4, lumbar support plate; 41, groove; 5, front pad. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0019] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this description, those skilled in the art can make creative modifications to the present embodiment as needed, but as long as it is within the scope of the claims of the present invention, it will be protected by the patent law.

[0020] The utility model provides a lumbar support mechanism for a seat that is easy to adjust quickly, which solves the technical problems in the prior art. The overall idea is as follows:

[0021] Embodiment 1:

[0022] See Figure 1 , Figure 2 , Figure 3 , Figure 4A lumbar support mechanism for a seat that is easy to adjust quickly, comprising a connecting plate 1, an adjustment assembly 2, a lumbar support plate 4 and a front pad 5. The adjustment assembly 2 is arranged at the middle of the front side of the connecting plate 1. The adjustment assembly 2 includes a connecting seat 21 connected to the connecting plate 1, and the two are installed together by bolts, a supporting seat 22 with elastic force that is slidably arranged on both sides of the connecting seat 21, and an adjustment seat 23 that is sleeved on the outside of the connecting seat 21, and both sides of the adjustment seat 23 are fixed together with the supporting seat 22;

[0023] A rotatable motion support rod 21a is provided in the concave cavities on the upper and lower sides of the connecting seat 21, and a spring pin is provided at the end of the motion support rod 21a. Track grooves 23a are opened on the upper and lower sides of the inner cavity of the adjustment seat 23. The track groove 23a is annular, and the front side of the track groove 23a is in a forward protruding arc shape, and the rear side is in a forward concave arc shape. The two sides are arranged in a straight line. The spring pins at the ends of the motion support rod 21a are against the bottom wall of the track groove 23a. A concave groove is provided in the middle of the front end and the middle of the rear end of the track groove 23a. One side of the concave groove smoothly transitions with the bottom wall of one side of the track groove 23a, and the other side is disconnected from the bottom wall of the other side of the track groove 23a. An inclined guide block 23b is provided in the concave groove at the rear end, and a concave cavity 23c is formed between the inclined guide block 23b and the bottom wall of one side of the track groove 23a; the lumbar support plate 4 is detachably arranged on the front side of the support seat 22; the front pad 5 is attached to the front side of the lumbar support plate 4 by Velcro.

[0024] During specific implementation, in order to realize the sliding of the support seat 22 with elastic force, sliding grooves 21b are opened on both sides of the connecting seat 21, and a connecting slide 22a is provided on the inner side of the support seat 22. The connecting slide 22a is adapted to be slidably arranged in the sliding groove 21b, and a spring 22b is provided on the front side of the connecting slide 22a, and the front end of the spring 22b is installed on the front side of the sliding groove 21b.

[0025] In specific implementation, in order to realize the disassembly and assembly between the lumbar support plate 4 and the support seat 22, a connecting piece 22c with an I-shaped cross section is provided on the front side of the support seat 22 by bolts, and the lumbar support plate 4 is installed on the front side of the connecting piece 22c by bolts.

[0026] In specific implementation, in order to facilitate the connection between the lumbar support plate 4 and the connecting member 22c, a groove 41 is opened in the middle of the front side of the lumbar support plate 4, and the lumbar support plate 4 is installed together with the connecting member 22c by passing bolts through the groove 41.

[0027] During specific implementation, in order to facilitate the disassembly and assembly between the adjustment seat 23 and the connecting seat 21, an opening extending from the adjustment seat 23 is opened on one side of the track groove 23a, and the movable support rod 21a on the connecting seat 21 can be moved out from its opening along the track groove 23a, so as to facilitate the separation of the adjustment seat 23 from the connecting seat 21. When the adjustment seat 23 is re-put on the connecting seat 21, the movable support rod 21a can enter the track groove 23a along the opening of the track groove 23a.

[0028] During specific implementation, in order to facilitate the installation of the connecting plate 1 and the seat, the connecting plate 1 is arranged in a "concave" shape, and installation holes are opened on both sides of the connecting plate 1.

[0029] In specific implementation, a backrest inner frame 3 is provided on the outer side of the connecting plate 1 , and the connecting plate 1 can be installed by passing bolts through the mounting holes on both sides of the connecting plate 1 and then screwing it into the backrest inner frame 3 inside the seat.

[0030] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process. The specific work is as follows:

[0031] When in use, the moving support rod 21a is in the concave groove in the middle of the rear end of the track groove 23a, and the spring pin at the end of the moving support rod 21a pops out. At this time, the waist support plate 4 is in the highest state, and the spring 22b is in a stretched state. Due to the obstruction of the inclined guide block 23b, when the waist support plate 4 is pulled forward to drive the adjustment seat 23 to move forward, the arc surface of the inner wall of the track groove 23a squeezes the moving support rod 21a, causing the moving support rod 21a to rotate into the track groove 23a on the side away from the inclined guide block 23b, and at the same time, the spring pin at the end of the moving support rod 21a gradually Retract, and then push the lumbar support plate 4 backwards. Under the elastic force of the spring 22b, the motion support rod 21a enters the concave groove in the middle of the front end of the track groove 23a and is limited. At this time, the lumbar support plate 4 is in the lowest state, and the spring pin at the end of the motion support rod 21a pops out again. When the user lies down, downward pressure is applied to the lumbar support plate 4, the support seat 22 and the adjustment seat 23. The outer edge of the concave groove in the middle of the front end of the track groove 23a presses on the motion support rod 21a, so that the motion support rod 21a can be stably in the concave groove at this position.

[0032] When the waist support plate 4 is pulled forward again to drive the adjustment seat 23 to move forward, the arc surface of the inner wall of the track groove 23a squeezes the moving support rod 21a, causing the moving support rod 21a to rotate and enter the track groove 23a, and the spring pin at the end of the moving support rod 21a retracts. Continuing to pull forward can make the moving support rod 21a enter the concave cavity 23c. At this time, it moves to the end and cannot be pulled forward any further. By pushing the waist support plate 4 backward, the moving support rod 21a can be limited due to the cross section on one side of the track groove 23a. Ensure that the motion support rod 21a gradually moves along the inclined guide block 23b into the concave groove in the middle of the rear end of the track groove 23a, and the spring pin at the end of the motion support rod 21a pops out, and the lumbar support plate 4 is adjusted to the highest state again. This state can be used when the user sits and leans back, leaning on the lumbar support plate 4, and applying downward pressure to the support seat 22 and the adjustment seat 23, the inner edge of the concave groove in the middle of the rear end of the track groove 23a presses on the motion support rod 21a, which can ensure the stability of the motion support rod 21a.

[0033] The above description of the embodiments is to facilitate ordinary technicians in this technical field to understand and use the utility model. It is obvious that those familiar with the technology in this field can easily make various modifications to the embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the protection scope of the utility model.

Claims

1. A lumbar support mechanism for a seat that is easy to adjust quickly, characterized in that: Included are: Connecting plate (1); The adjusting assembly (2) is arranged at the middle of the front side of the connecting plate (1), and the adjusting assembly (2) comprises a connecting seat (21) connected to the connecting plate (1), a supporting seat (22) slidably arranged on both sides of the connecting seat (21) and having elastic force, and an adjusting seat (23) sleeved on the outer side of the connecting seat (21), the two sides of the adjusting seat (23) are fixed together with the supporting seat (22), the concave cavities on the upper and lower sides of the connecting seat (21) are both provided with rotatable moving support rods (21a), and the ends of the moving support rods (21a) are provided with spring pins, and the inner cavity of the adjusting seat (23) is provided with track grooves (21) on the upper and lower sides. 3a), the track groove (23a) is annular, and the front side of the track groove (23a) is in a forward protruding arc shape, the rear side is in a forward concave arc shape, and the two sides are arranged in straight lines, the spring pin at the end of the motion support rod (21a) is against the bottom wall of the track groove (23a), and the middle of the front end and the middle of the rear end of the track groove (23a) are both provided with a concave groove, one side of the concave groove is smoothly transitioned with the bottom wall of one side of the track groove (23a), and the other side is disconnected from the bottom wall of the other side of the track groove (23a), and an inclined guide block (23b) is arranged in the concave groove at the rear end, and a concave cavity (23c) is formed between the inclined guide block (23b) and the bottom wall of one side of the track groove (23a); A lumbar support plate (4), wherein the lumbar support plate (4) is detachably arranged on the front side of the support seat (22); A front pad (5) is adhered to the front side of the lumbar support plate (4).

2. The lumbar support mechanism for a chair that is easy to adjust quickly according to claim 1, characterized in that: Slide grooves (21b) are provided on both sides of the connecting seat (21), a connecting slide plate (22a) is provided on the inner side of the supporting seat (22), the connecting slide plate (22a) is slidably arranged in the slide groove (21b), a spring (22b) is provided on the front side of the connecting slide plate (22a), and the front end of the spring (22b) is installed on the front side of the slide groove (21b).

3. The lumbar support mechanism for a chair that is easy to adjust quickly according to claim 2, characterized in that: A connecting piece (22c) having an I-shaped cross section is provided on the front side of the support seat (22) by means of bolts, and the lumbar support plate (4) is mounted on the front side of the connecting piece (22c) by means of bolts.

4. The lumbar support mechanism for a chair that is easy to adjust quickly according to claim 3, characterized in that: A groove (41) is provided in the middle of the front side of the waist support plate (4), and the waist support plate (4) is installed together with the connecting piece (22c) by means of bolts passing through the groove (41).

5. The lumbar support mechanism for a chair that is easy to adjust quickly according to claim 4, characterized in that: One side of the track groove (23a) is provided with an opening extending out of the adjustment seat (23).

6. The lumbar support mechanism for a chair that is easy to adjust quickly according to claim 5, characterized in that: The connecting plate (1) is arranged in a "concave" shape, and mounting holes are provided on both sides of the connecting plate (1).

7. The lumbar support mechanism for a chair that is easy to adjust quickly according to claim 6, characterized in that: A backrest inner frame (3) is arranged on the outer side of the connecting plate (1).

Images