Waist rest and chair back

Abstract

The utility model relates to the technical field of seats, in particular to a waist rest and a seat back. The waist rest comprises a body, the body is in an arc shape, the middle of the body is detachably connected with a supporting piece, and the supporting piece is elastic. The chair comprises a chair back frame, a supporting plate is vertically installed on the chair back frame, and the waist rest is connected with the supporting plate in an up-down sliding mode. When the waist rest is stressed, according to sitting postures or weights of different users, the supporting piece can be bent and deformed to different degrees and adjusted in a self-adaptive mode, the lumbar vertebra of the human body can be better supported, comfort is improved, and the waist rest is stable in structure and not prone to being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a lumbar support and a chair back Background Art

[0002] For example, the Chinese utility model patent with the publication number of CN201360765Y discloses an up-and-down adjustment structure of a seat lumbar support, which includes a lumbar support and a backrest frame. The two ends of the lumbar support can be limited to move up and down in the backrest frame, and the two ends of the lumbar support are fixed to the backrest frame through concave-convex cooperation. The problems existing in the prior art are that it is difficult for the lumbar support to adaptively adjust according to the sitting posture and different weights of the human body, it is not comfortable enough, and its connection structure with the backrest frame is relatively simple and not firm enough Summary of the Utility Model

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a chair back with a firm structure, an adaptive lumbar support and comfortable seating

[0004] The technical solution adopted by the utility model to solve the problem is: a lumbar support, including a body, the body is in an arc shape with an opening at the front side, a support member is detachably connected to the middle of the body, the support member is arranged on the front side of the body, and the support member has elasticity

[0005] As a further improvement of the above technical solution, the cross-section of the support member is a polygon with an opening, a groove extending in the front-rear direction is arranged on the inner side wall of the support member, and a connecting member is arranged on the support member

[0006] As a further improvement of the above technical solution, a clamping groove is arranged on the inner wall of the body, the connecting member is clamped in the clamping groove, a sliding groove is arranged at the rear side of the middle of the body, and sliding teeth are arranged on the outer side wall of the sliding groove

[0007] As a further improvement of the above technical solution, an elastic band is arranged on the front side of the body, and the elastic band abuts against the front end face of the support member

[0008] As a further improvement of the above technical solution, a wing handle is arranged on the rear side of the body

[0009] A chair back, including a lumbar support as described above, further includes a chair back frame, a support plate is vertically arranged on the rear side of the chair back frame, a guide groove is arranged in the support plate, and the body is slidably connected up and down on the guide groove

[0010] As a further improvement of the above technical solution, a guiding member is arranged in the guide groove, elastic pieces are arranged on the inner side wall of the guide groove, the sliding groove is slidably connected with the guiding member, and the sliding teeth are slidably matched with the elastic pieces

[0011] As a further improvement of the above technical solution, a fabric is provided on the front side of the backrest frame, and the elastic band abuts against the fabric.

[0012] The beneficial effects of the present utility model are as follows: An elastic support member is provided inside the lumbar support. When the lumbar support is stressed, the support member can be bent and deformed according to the sitting postures or weights of different users, and can be adaptively adjusted, better supporting the human lumbar vertebra, increasing comfort, and having a stable structure and being not easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present utility model will be further explained and described below in conjunction with the drawings and specific embodiments.

[0014] Figure 1 is a schematic structural diagram of the lumbar support of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the support member of the present utility model;

[0016] Figure 3 is a schematic structural diagram of the preferred embodiment of the present utility model;

[0017] Figure 4 is an exploded view of the preferred embodiment of the present utility model;

[0018] Figure 5 is a schematic structural diagram of the support plate of the present utility model;

[0019] Figure 6 is an exploded view of a part of the structure of the present utility model.

[0020] In the figure: 1 - body, 11 - clamping groove, 12 - sliding groove, 13 - sliding teeth, 14 - wing handle, 2 - support plate, 21 - guide groove, 211 - guide member, 212 - elastic sheet, 3 - support member, 31 - groove body, 32 - connecting member, 4 - elastic band, 5 - backrest frame, 6 - fabric. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it should not be construed as a limitation on the protection scope of the present utility model.

[0022] In the description of the present utility model, it should be understood that regarding the orientation description, for example, the orientations or positional relationships indicated by up, down, front, back, left, right, etc. are based on the orientations or positional relationships shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0023] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more. Understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0024] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the technical field can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0025] Refer to Figures 1 to 2 , a lumbar support, including a body 1, a support member 3 is detachably connected to the middle of the body 1. The support member 3 is arranged on the front side of the body 1, and the support member 3 has elasticity.

[0026] The body 1 is in an arc shape with an opening on the front side. An elastic band 4 is arranged on the front side of the body 1. A chute 12 is arranged on the rear side of the middle of the body 1. A sliding tooth 13 is arranged on the outer side wall of the chute 12. A wing handle 14 is arranged on the rear side of the body 1. A clamping groove 11 is arranged on the inner wall of the middle of the body 1. The wing handle 14 is provided for adjusting the position of the lumbar support and facilitating use.

[0027] The cross-section of the support member 3 is a polygon with an opening. A groove 31 extending in the front-back direction is arranged on the inner side wall of the support member 3. A connecting member 32 is arranged on the support member 3. The connecting member 32 is clamped in the clamping groove 11. The front end face of the support member 3 abuts against the elastic band 4.

[0028] When the lumbar support is stressed, since the support member 3 has elasticity and a transverse groove 31 is arranged on the inner wall, therefore, according to the sitting postures or weights of different users, the support member 3 can bend to undergo different degrees of deformation, adaptively adjust, better support the human lumbar vertebra, and increase comfort.

[0029] Refer to Figures 3 to 6, in a preferred embodiment, a backrest includes a lumbar support as described above, and further includes a backrest frame 5. A support plate 2 is vertically provided on the rear side of the backrest frame 5. A guide groove 21 is provided inside the support plate 2, and the lumbar support is slidably connected up and down to the guide groove 21. The support plate 2 is used to disperse the force on the lumbar support, avoid the lumbar support from falling off and being damaged due to excessive force, and the structure is stable.

[0030] A guide member 211 is provided in the guide groove 21, and an elastic piece 212 is provided on the inner side wall of the guide groove 21. The sliding groove 12 is slidably connected to the guide member 211, and the sliding teeth 13 are slidably engaged with the elastic piece 212. In a preferred embodiment, a fastener can be provided at the rear side of the guide member 211 for fixing the lumbar support.

[0031] A fabric 6 is provided on the front side of the backrest frame 5, and the elastic band 4 abuts against the fabric 6.

[0032] The sliding teeth 13 on both sides of the sliding groove 12 are slidably engaged with the elastic piece 212. The lumbar support can be gradually adjusted on the support plate 2 through the mutual sliding and fixing between the elastic piece 212 and the sliding teeth 13. The position of the lumbar support can be adjusted up and down, which is convenient and fast.

[0033] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the description and drawings of the present invention under the inventive concept of the present invention, or directly or indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A lumbar support, characterized in that: It includes a body (1), the body (1) is in an arc shape with an opening at the front side, a support member (3) is detachably connected to the middle of the body (1), the support member (3) is arranged on the front side of the body (1), and the support member (3) has elasticity.

2. The lumbar support according to claim 1, characterized in that: The cross-section of the support member (3) is a polygon with an opening, a groove body (31) extending in the front-rear direction is arranged on the inner side wall of the support member (3), and a connecting member (32) is arranged on the support member (3).

3. The lumbar support according to claim 2, characterized in that: A clamping groove (11) is arranged on the inner wall of the body (1), the connecting member (32) is clamped in the clamping groove (11), a sliding groove (12) is arranged at the rear side of the middle of the body (1), and sliding teeth (13) are arranged on the outer side wall of the sliding groove (12).

4. The lumbar support according to claim 3, characterized in that: An elastic band (4) is arranged on the front side of the body (1), and the elastic band (4) abuts against the front end face of the support member (3).

5. The lumbar support according to claim 4, characterized in that: Wing handles (14) are arranged on the rear side of the body (1).

6. A chair back, including the lumbar support according to claim 5, characterized in that: It further includes a chair back frame (5), a support plate (2) is vertically arranged on the rear side of the chair back frame (5), a guide groove (21) is arranged in the support plate (2), and the body (1) is slidably connected up and down on the guide groove (21).

7. The chair back according to claim 6, characterized in that: A guide member (211) is arranged in the guide groove (21), elastic pieces (212) are arranged on the inner side wall of the guide groove (21), the sliding groove (12) is slidably connected with the guide member (211), and the sliding teeth (13) are slidably matched with the elastic pieces (212).

8. The chair back according to claim 6, characterized in that: A fabric (6) is arranged on the front side of the chair back frame (5), and the elastic band (4) abuts against the fabric (6).

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