Elastic support assembly and lumbar support chair

Abstract

The application provides an elastic support assembly and a waist support sitting chair. The elastic support assembly comprises a sitting chair body and a support module. The sitting chair body is used for allowing a user to sit down and maintaining the sitting posture of the user. The sitting chair body is provided with a first support part and a second support part. The second support part is integrally connected to the first support part. The support module comprises a connecting seat, an elastic module and a waist support part. The connecting seat is arranged on one side of the second support part facing the waist of the user and is connected to the second support part. The elastic module is arranged between the waist support part and the connecting seat and applies an elastic force to the waist support part, so that the waist support part elastically moves relative to the connecting seat through the elastic module. The waist support part is used for allowing the waist of the user to abut and press, and is gathered to support the waist of the user under the abutment and pressing of the waist of the user, so as to elastically support the waist of the user. The waist support part avoids rigidly supporting the waist of the user, and the comfort of the elastic support assembly is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of lumbar support chairs, and more particularly to an elastic support component and a lumbar support chair. Background Technology

[0002] With the development of technology, lumbar support chairs have been applied to people's lives. These chairs are primarily designed for people who sit for long periods, providing lumbar support and relieving fatigue. They can be placed on chair seats, tabletops, desktops, or sofas. However, existing lumbar support chairs consist of a main chair body and a lumbar support component. The main chair body has a first support section and a second support section, with the lumbar support component positioned relative to and connected to the second support section. However, the lumbar support component provides rigid support to the user's lower back, lacking elastic support, resulting in poor comfort in existing lumbar support chairs. Utility Model Content

[0003] The purpose of this utility model is to provide an elastic support component and a lumbar support chair. The main body of the chair is used for users to sit down and maintain their sitting posture. The main body of the chair has a first support part and a second support part, with the second support part integrally connected to the first support part. The second support part maintains its shape under pressure to indirectly support the user's waist. The first support part is used to support the user's buttocks. The second support part is located on the rear side of the user's waist. The support module includes a connecting seat, an elastic module, and a lumbar support piece. The connecting seat is located on the side of the second support part facing the user's waist and is connected to the second support part. The lumbar support piece is located on the front side of the connecting seat. The elastic module is located between the lumbar support piece and the connecting seat and applies an elastic force to the lumbar support piece, allowing the lumbar support piece to move elastically relative to the connecting seat through the elastic module. The lumbar support piece is used to provide pressure for the user's waist and, under the pressure of the user's waist, gathers and supports the user's waist to achieve elastic support for the user's waist, avoiding rigid support from the lumbar support piece and improving the comfort of the elastic support component.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an elastic support component applied to a lumbar support chair, the elastic support component comprising:

[0005] The main body of the seating chair is used for users to sit down and maintain their sitting posture; the main body of the seating chair is provided with a first support part and a second support part, the second support part is integrally connected to the first support part, and the second support part maintains its own shape under pressure to indirectly support the user's waist; the first support part is used to support the user's buttocks; the second support part is located on the back side of the user's waist.

[0006] The support module includes a connecting seat, an elastic module, and a lumbar support piece. The connecting seat is located on the side of the second support portion facing the user's waist and is connected to the second support portion. The lumbar support piece is located on the front side of the connecting seat. The elastic module is positioned between the lumbar support piece and the connecting seat and applies an elastic force to the lumbar support piece, allowing the lumbar support piece to move elastically relative to the connecting seat via the elastic module. The lumbar support piece is used to provide pressure against the user's waist and, under the pressure of the user's waist, provides a gathered support for the user's waist.

[0007] Optionally, the connecting seat is provided with a first connecting portion; the elastic module is connected to the first connecting portion and is arranged at an angle relative to the central axis of the connecting seat; the elastic module elastically acts on at least one position of the lumbar support.

[0008] Optionally, the first connecting portion has multiple portions, and the multiple first connecting portions are arranged at intervals along the left-right direction of the connecting seat;

[0009] The elastic modules are arranged in a square or rectangular shape and act elastically at multiple different positions of the lumbar support.

[0010] The elastic module has multiple components, and each of the multiple elastic modules is connected to a corresponding first connecting part; the multiple elastic modules are arranged in a figure-eight shape, or the multiple elastic modules are arranged in parallel.

[0011] Optionally, the elastic module further includes an elastic element located on the side of the first connecting portion facing the lumbar support, one end of the elastic element being connected to the first connecting portion and stationary relative to the first connecting portion; the elastic element directly or indirectly supports the lumbar support and applies an elastic force to the lumbar support, so that the lumbar support provides elastic support to the user's waist.

[0012] Optionally, in each of the elastic modules, there are multiple elastic elements, which are arranged along the length direction of the first connecting portion and connected to the same first connecting portion. In this case, one first connecting portion connects at least two elastic elements.

[0013] Optionally, the elastic element is a spring; one end of the spring near the first connecting portion is attached to the side wall of the first connecting portion;

[0014] The first connecting part is provided with a first arm, which extends from the first connecting part toward the spring and inserts into the gap of the elastic element. Therefore, the first arm is located on the outside of the end of the spring near the first connecting part and restricts the movement of the end of the spring near the first connecting part, so that the elastic element is engaged with the first connecting part.

[0015] Optionally, the first connecting portion is located in the inner space of the spring and exposed to the inner side of the spring;

[0016] The first arm extends from the sidewall of the first connecting portion toward the gap of the elastic element. There are multiple first arms, which are arranged in a ring along the central axis of the spring and act at different positions in the spring near the end of the first connecting portion.

[0017] Optionally, the elastic module further includes a support base, which is disposed on the side of the elastic member facing away from the first connecting portion. The support base is located between the elastic member and the lumbar support member and supports the lumbar support member; the lumbar support member is detachably connected to the support base.

[0018] The support base is provided with a second connecting part, and the elastic element is a spring; one end of the spring near the second connecting part is attached to the side wall of the second connecting part.

[0019] The second connecting part is provided with a second arm, which extends from the second connecting part toward the spring and inserts into the gap of the elastic element. Therefore, the second arm is located on the outside of the end of the spring near the second connecting part and restricts the movement of the end of the spring near the second connecting part, so that the elastic element is engaged with the second connecting part.

[0020] Optionally, the elastic module further includes a screw that connects the lumbar support and the support base; the screw passes through the support base and is screwed to the lumbar support; when the second connection is connected to the spring, the end of the screw is located in the inner space of the spring and exposed in the inner space of the spring.

[0021] Alternatively, the elastic module may further include a protective cover located between the connecting seat and the support seat, and sleeved on the outside of each of the elastic elements to provide external protection for the elastic elements.

[0022] To achieve the above objectives, this utility model provides the following technical solution: a lumbar support chair, including the aforementioned elastic support component, the elastic support component having the aforementioned lumbar support member, the lumbar support member having a first side wing and a second side wing, the first side wing being disposed on one side of the second side wing; the first side wing and the second side wing are arranged along the left-right direction of the lumbar support member and can be pressed against by the user's waist, so that the first side wing and the second side wing converge towards the user's waist from the left-right direction to provide convergent support for the user's waist;

[0023] Alternatively, the lumbar support can be an integral flexible support, with the middle part of the integral flexible support pressed against the user's waist, and the left and right sides of the integral flexible support converging towards the user's waist to provide converging support for the user's waist.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] This utility model provides an elastic support component and a lumbar support chair. The main body of the chair is used for users to sit down and maintain their sitting posture. The main body of the chair has a first support part and a second support part, with the second support part integrally connected to the first support part. The second support part maintains its shape under pressure to indirectly support the user's waist. The first support part is used to support the user's buttocks. The second support part is located on the rear side of the user's waist. The support module includes a connecting seat, an elastic module, and a lumbar support piece. The connecting seat is located on the side of the second support part facing the user's waist and is connected to the second support part. The lumbar support piece is located on the front side of the connecting seat. The elastic module is located between the lumbar support piece and the connecting seat and applies an elastic force to the lumbar support piece, allowing the lumbar support piece to move elastically relative to the connecting seat through the elastic module. The lumbar support piece is used to provide pressure against the user's waist and, under the pressure of the user's waist, it gathers and supports the user's waist to achieve elastic support for the user's waist, avoiding rigid support from the lumbar support piece and improving the comfort of the elastic support component. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0028] Figure 1A schematic diagram of a resilient support component according to an embodiment of this application is shown.

[0029] Figure 2 A cross-sectional view of an elastic support component according to an embodiment of this application is shown.

[0030] Figure 3 An exploded view of an elastic support assembly according to an embodiment of this application is shown.

[0031] Figure 4 A schematic diagram of a seating chair body with an elastic support assembly according to an embodiment of this application is shown.

[0032] Figure 5 A schematic diagram of a support module of an elastic support component according to an embodiment of this application is shown.

[0033] Figure 6 A schematic diagram of the connector of an elastic support assembly according to an embodiment of this application is shown.

[0034] Figure 7 A schematic diagram showing the connection between the elastic module of the elastic support assembly and the lumbar support piece according to an embodiment of this application is shown.

[0035] Figure 8 A schematic diagram of a protective cover for an elastic support assembly according to a second embodiment of this application is shown.

[0036] Figure 9 A schematic diagram is shown of a lumbar support chair according to a third embodiment of this application, wherein the lumbar support component is an integral flexible support component.

[0037] Figure label:

[0038] 100. Flexible support components;

[0039] 10. Main body of the seating chair; 11. First support section; 12. Second support section;

[0040] 20. Support module; 21. Connecting seat; 211. First connecting part; 2111. First support arm; 22. Elastic module; 221. Elastic element; 222. Support seat; 2221. Second connecting part; 223. Screw; 224. Protective cover; 224a. Positioning hole; 23. Waist support; 231. First side wing; 232. Second side wing. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0042] Please refer to the attached document. Figures 1-8 This application provides an elastic support component 100, which is applied to a lumbar support chair and is used to elastically support the user's waist.

[0043] Please refer to the attached document. Figures 1-8 In this embodiment, the elastic support component 100 includes a seating chair body 10 and a support module 20. The seating chair body 10 is used for a user to sit down and maintain the user's sitting posture. The seating chair body 10 is provided with a first support part 11 and a second support part 12. The second support part 12 is integrally connected to the first support part 11. The second support part 12 maintains its own shape under pressure to indirectly support the user's waist. The first support part 11 is used to support the user's buttocks. The second support part 12 is located on the back side of the user's waist. The support module 20 includes a connecting seat 21, an elastic module 22, and a lumbar support component 23. The connecting seat 21 is located on the second support part 11. On the side of the support part 12 facing the user's waist, the connecting seat 21 is connected to the second support part 12; the lumbar support 23 is disposed on the front side of the connecting seat 21, and the elastic module 22 is located between the lumbar support 23 and the connecting seat 21, and applies an elastic force to the lumbar support 23, so that the lumbar support 23 can move elastically relative to the connecting seat 21 through the elastic module 22; the lumbar support 23 is used to provide pressure for the user's waist, and under the pressure of the user's waist, it gathers and supports the user's waist, so as to achieve elastic support for the user's waist, avoid the lumbar support 23 providing rigid support for the user's waist, and improve the comfort of the elastic support component 100.

[0044] Please refer to the attached document. Figures 1-8 In this embodiment of the application, the main body 10 of the seating chair is used for users to sit down and maintain the user's sitting posture; the main body 10 of the seating chair is provided with a first support part 11 and a second support part 12, the second support part 12 is integrally connected to the first support part 11, and the second support part 12 maintains its own shape under pressure to indirectly support the user's waist; the first support part 11 is used to support the user's buttocks; the second support part 12 is located on the back of the user's waist to ensure the user's sitting posture comfort.

[0045] The support module 20 includes a connecting seat 21, an elastic module 22, and a lumbar support 23. The connecting seat 21 is located on the side of the second support part 12 facing the user's waist and is connected to the second support part 12. The lumbar support 23 is located on the front side of the connecting seat 21. The elastic module 22 is located between the lumbar support 23 and the connecting seat 21 and applies an elastic force to the lumbar support 23, allowing the lumbar support 23 to move elastically relative to the connecting seat 21 through the elastic module 22. The lumbar support 23 is used to provide pressure for the user's waist and, under the pressure of the user's waist, gathers and supports the user's waist to achieve elastic support for the user's waist, avoiding rigid support for the user's waist and improving the comfort of the elastic support assembly 100.

[0046] Please refer to the attached document. Figures 1-6 In this embodiment, the connecting seat 21 is provided with a first connecting part 211; the elastic module 22 is connected to the first connecting part 211 and is arranged at an inclination relative to the central axis of the connecting seat 21; the elastic module 22 elastically acts on at least one position of the lumbar support 23 so that the elastic module 22 can be connected to the connecting seat 21 through the first connecting part 211, thereby facilitating the lumbar support 23 to move elastically relative to the connecting seat 21 through the elastic module 22, so as to cushion the user's waist when it comes into contact with the lumbar support 23.

[0047] Please refer to the attached document. Figures 1-6 In this embodiment, there are multiple first connecting portions 211, which are arranged at intervals along the left and right directions of the connecting seat 21. The elastic modules 22 are arranged in a square or rectangular shape and elastically act on multiple different positions of the lumbar support 23, so that the lumbar support 23 can provide elastic support to different positions of the user's waist. There are multiple elastic modules 22, which are respectively connected to the corresponding first connecting portions 211. The multiple elastic modules 22 are arranged in a figure-eight shape, with adjacent elastic modules 22 extending outward or contracting inward, thereby forming outward or inward component forces on the left and right sides to enhance the hugging or tensioning effect. Alternatively, the multiple elastic modules 22 are arranged in parallel so that all elastic modules 22 have the same direction and form a uniform and parallel elastic support surface.

[0048] Please refer to the attached document. Figures 1-7 In this embodiment, the elastic module 22 further includes an elastic element 221, which is located on the side of the first connecting part 211 facing the waist support 23. One end of the elastic element 221 is connected to the first connecting part 211 and is stationary relative to the first connecting part 211. The elastic element 221 directly or indirectly supports the waist support 23 and applies an elastic force to the waist support 23, so that the waist support 23 provides elastic support for the user's waist. This allows the two ends of the elastic element 221 to be connected to the first connecting part 211 and the waist support 23 respectively, thereby realizing the elastic movement of the waist support 23.

[0049] Please refer to the attached document. Figures 1-7 In this embodiment of the application, each elastic module 22 has multiple elastic elements 221. The multiple elastic elements 221 are arranged along the length direction of the first connecting part 211 and connected to the same first connecting part 211. At this time, one first connecting part 211 connects at least two elastic elements 221. By arranging multiple elastic elements 221, the elastic force of the waist support 23 is increased, thus ensuring the elastic effect of the waist support 23.

[0050] Please refer to the attached document. Figures 1-7 In this embodiment, the elastic element 221 is a spring; one end of the spring near the first connecting portion 211 is attached to the side wall of the first connecting portion 211; the first connecting portion 211 is provided with a first support arm 2111, which extends from the first connecting portion 211 toward the spring and inserts into the gap of the elastic element 221. Therefore, the first support arm 2111 is located on the outside of the end of the spring near the first connecting portion 211 and restricts the movement of the end of the spring near the first connecting portion 211, so that the elastic element 221 is engaged with the first connecting portion 211, so that the first connecting portion 211 can be connected to the elastic element 221 through the first support arm 2111, thereby improving the connection strength between the elastic element 221 and the first connecting portion 211.

[0051] Please refer to the attached document. Figures 1-7 In this embodiment, the first connecting portion 211 is located in the inner space of the spring and exposed to the inner side of the spring; the first support arm 2111 extends from the side wall of the first connecting portion 211 toward the gap of the elastic member 221. There are multiple first support arms 2111, which are arranged in a ring along the central axis of the spring and act at different positions in the spring near the end of the first connecting portion 211. By arranging multiple first support arms 2111, the connection stability between the first connecting portion 211 and the elastic member 221 is increased. When one first support arm 2111 fails, the first connecting portion 211 and the elastic member 221 still maintain the connection effect.

[0052] Please refer to the attached document. Figures 1-7 In this embodiment, the elastic module 22 further includes a support base 222, which is disposed on the side of the elastic member 221 facing away from the first connecting portion 211. The support base 222 is located between the elastic member 221 and the waist support member 23 and supports the waist support member 23. The waist support member 23 is detachably connected to the support base 222 so that the waist support member 23 can be connected to or detached from the support base 222, thereby facilitating the detachable connection of the waist support member 23 to the elastic module 22 through the support base 222 and improving the ease of disassembly of the waist support member 23.

[0053] The support base 222 is provided with a second connecting part 2221, and the elastic element 221 is a spring. One end of the spring near the second connecting part 2221 is attached to the side wall of the second connecting part 2221. The second connecting part 2221 is provided with a second support arm, which extends from the second connecting part 2221 toward the spring and inserts into the gap of the elastic element 221. Therefore, the second support arm is located on the outside of the end of the spring near the second connecting part 2221 and restricts the movement of the end of the spring near the second connecting part 2221, so that the elastic element 221 is engaged with the second connecting part 2221, so that the second connecting part 2221 can be connected to the elastic element 221 through the second support arm, thereby improving the connection strength between the elastic element 221 and the second connecting part 2221.

[0054] Please refer to the attached document. Figures 1-7 In this embodiment, the elastic module 22 further includes a screw 223, which connects the lumbar support 23 and the support base 222. The screw 223 passes through the support base 222 and is screwed onto the lumbar support 23. When the second connecting part 2221 is connected to the spring, the end of the screw 223 is located in the inner space of the spring and exposed in the inner space of the spring. This facilitates the further connection between the support base 222 and the lumbar support 23 via the screw 223, ensuring the connection effect between the support base 222 and the lumbar support 23.

[0055] Please refer to the attached document. Figures 7-8 In the second embodiment, the elastic module 22 further includes a protective cover 224, which is located between the connecting seat 21 and the support seat 222 and is sleeved on the outside of each elastic element 221 to provide external protection for the elastic element 221, prevent the user's hand from contacting the elastic element 221, improve the external protection of the elastic element 221, and at the same time improve the safety of the elastic support assembly 100.

[0056] In addition, the positioning cover 224 is provided with a positioning hole 224a, which is used for the elastic member 221 to pass through. The inner sidewall of the positioning hole 224a can contact the outer sidewall of the elastic member 221 to position the elastic member 221 and prevent the elastic member 221 from bending or misaligning under dynamic load.

[0057] Please refer to the attached document. Figure 9In the third embodiment, a lumbar support chair includes an elastic support assembly 100, which has a lumbar support member 23. The lumbar support member 23 has a first side wing 231 and a second side wing 232. The first side wing 231 is disposed on one side of the second side wing 232. The first side wing 231 and the second side wing 232 are arranged along the left and right direction of the lumbar support member 23 and can be pressed against by the user's waist, so that the first side wing 231 and the second side wing 232 converge towards the user's waist from the left and right direction to provide convergent support for the user's waist. This allows for convergence through staggered overlap, thereby forming a ring support that adapts to the waist curves of different body types. Optionally, the first side wing 231 and the second side wing 232 can be integrally covered by an outer flexible cover.

[0058] Alternatively, the lumbar support 23 is an integral flexible support component. The middle part of the integral flexible support component is pressed against the user's waist, and the left and right sides of the integral flexible support component converge toward the user's waist to provide convergent support for the user's waist. The integral flexible support seat 222 has a raised middle part and naturally converged sides to achieve convergent support without restricting movement, resulting in higher comfort and stronger adaptability.

[0059] Compared with the prior art, the beneficial effects of this utility model are:

[0060] This utility model provides an elastic support component 100 and a lumbar support chair. The chair body 10 is used for users to sit down and maintain their sitting posture. The chair body 10 has a first support part 11 and a second support part 12. The second support part 12 is integrally connected to the first support part 11. The second support part 12 maintains its shape under pressure to indirectly support the user's waist. The first support part 11 is used to support the user's buttocks. The second support part 12 is located on the back side of the user's waist. The support module 20 includes a connecting seat 21, an elastic module 22, and a lumbar support component 23. The connecting seat 21 is located on the second support part 12. On the side facing the user's waist, the connecting seat 21 is connected to the second support part 12; the waist support 23 is disposed on the front side of the connecting seat 21, and the elastic module 22 is located between the waist support 23 and the connecting seat 21, and applies an elastic force to the waist support 23, so that the waist support 23 can move elastically relative to the connecting seat 21 through the elastic module 22; the waist support 23 is used to provide pressure for the user's waist, and under the pressure of the user's waist, it gathers and supports the user's waist, so as to achieve elastic support for the user's waist, avoid the waist support 23 providing rigid support for the user's waist, and improve the comfort of the elastic support component 100.

[0061] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0062] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0063] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An elastic support component, characterized in that, The elastic support component, used in a lumbar support chair, includes: The main body of the seating chair is used for users to sit down and maintain their sitting posture; the main body of the seating chair is provided with a first support part and a second support part, the second support part is integrally connected to the first support part, and the second support part maintains its own shape under pressure to indirectly support the user's waist; the first support part is used to support the user's buttocks; the second support part is located on the back side of the user's waist. The support module includes a connecting seat, an elastic module, and a lumbar support piece. The connecting seat is located on the side of the second support portion facing the user's waist and is connected to the second support portion. The lumbar support piece is located on the front side of the connecting seat. The elastic module is positioned between the lumbar support piece and the connecting seat and applies an elastic force to the lumbar support piece, allowing the lumbar support piece to move elastically relative to the connecting seat via the elastic module. The lumbar support piece is used to provide pressure against the user's waist and, under the pressure of the user's waist, provides a gathered support for the user's waist.

2. The elastic support component according to claim 1, characterized in that, The connecting seat is provided with a first connecting part; the elastic module is connected to the first connecting part and is arranged at an angle relative to the central axis of the connecting seat; the elastic module elastically acts on at least one position of the lumbar support piece.

3. The elastic support component according to claim 2, characterized in that, The first connecting part has a plurality of parts, and the plurality of first connecting parts are arranged at intervals along the left and right direction of the connecting seat; The elastic modules are arranged in a square or rectangular shape and act elastically at multiple different positions of the lumbar support. The elastic module has multiple components, and each of the multiple elastic modules is connected to a corresponding first connecting part; the multiple elastic modules are arranged in a figure-eight shape, or the multiple elastic modules are arranged in parallel.

4. The elastic support component according to claim 2, characterized in that, The elastic module further includes an elastic element located on the side of the first connecting portion facing the lumbar support. One end of the elastic element is connected to the first connecting portion and is stationary relative to the first connecting portion. The elastic element directly or indirectly supports the lumbar support and applies an elastic force to the lumbar support, so that the lumbar support provides elastic support to the user's waist.

5. The elastic support component according to claim 4, characterized in that, In each of the elastic modules, there are multiple elastic elements, which are arranged along the length direction of the first connecting portion and connected to the same first connecting portion. In this case, one first connecting portion connects at least two elastic elements.

6. The elastic support component according to claim 4, characterized in that, The elastic element is a spring; one end of the spring near the first connecting part is attached to the side wall of the first connecting part. The first connecting part is provided with a first arm, which extends from the first connecting part toward the spring and inserts into the gap of the elastic element. Therefore, the first arm is located on the outside of the end of the spring near the first connecting part and restricts the movement of the end of the spring near the first connecting part, so that the elastic element is engaged with the first connecting part.

7. The elastic support component according to claim 6, characterized in that, The first connecting portion is located in the inner space of the spring and exposed to the inner side of the spring; The first arm extends from the sidewall of the first connecting portion toward the gap of the elastic element. There are multiple first arms, which are arranged in a ring along the central axis of the spring and act at different positions in the spring near the end of the first connecting portion.

8. The elastic support component according to claim 4, characterized in that, The elastic module further includes a support base, which is disposed on the side of the elastic member facing away from the first connecting portion. The support base is located between the elastic member and the lumbar support member and supports the lumbar support member. The lumbar support member is detachably connected to the support base. The support base is provided with a second connecting part, and the elastic element is a spring; one end of the spring near the second connecting part is attached to the side wall of the second connecting part. The second connecting part is provided with a second arm, which extends from the second connecting part toward the spring and inserts into the gap of the elastic element. Therefore, the second arm is located on the outside of the end of the spring near the second connecting part and restricts the movement of the end of the spring near the second connecting part, so that the elastic element is engaged with the second connecting part.

9. The elastic support component according to claim 8, characterized in that, The elastic module also includes a screw that connects the lumbar support and the support base; the screw passes through the support base and is screwed to the lumbar support; when the second connection is connected to the spring, the end of the screw is located in the inner space of the spring and exposed in the inner space of the spring. Alternatively, the elastic module may further include a protective cover located between the connecting seat and the support seat, and sleeved on the outside of each of the elastic elements to provide external protection for the elastic elements.

10. A lumbar support chair, characterized in that, The device includes an elastic support component as described in any one of claims 1 to 9, wherein the elastic support component is provided with the lumbar support member, the lumbar support member is provided with a first side wing and a second side wing, the first side wing being disposed on one side of the second side wing; the first side wing and the second side wing are arranged along the left-right direction of the lumbar support member and can be pressed against by the user's waist, such that the first side wing and the second side wing converge toward the user's waist from the left-right direction to provide convergent support for the user's waist; Alternatively, the lumbar support can be an integral flexible support, with the middle part of the integral flexible support pressed against the user's waist, and the left and right sides of the integral flexible support converging towards the user's waist to provide converging support for the user's waist.

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