A backrest assembly and a backrest chair
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN DONGBA IND CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-07-21
AI Technical Summary
The existing back support components are poorly functional, providing only support and lacking diverse functionalities.
A backrest assembly was designed, comprising an integrated or separate support module. The inner core layer integrates vibration, heating and conductive components, and multiple massage functions are realized through a controller. The conductive components of the vibration and heating components are routed along the inner core layer and connected to the controller, making full use of the structure of the inner core layer.
The functionality of the backrest component has been improved, enabling multiple massage functions, enhancing space utilization, meeting wiring requirements, and improving the user experience.
Smart Images
Figure CN224522697U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of backrest chairs, and more particularly to a backrest assembly and a backrest chair. Background Technology
[0002] With the development of technology, backrest chairs have been applied to people's lives. Backrest chairs are used to adjust the contact points between the human body and the seat to obtain a more comfortable angle and reduce user fatigue. Backrest components are an integral part of backrest chairs. In the existing technology, existing backrest components include a support module, which includes a first support part and a second support part; the first support part and the second support part are connected; the first support part is used to support the user's buttocks; the second support part supports the user's waist. However, the functionality of existing backrest components is relatively poor. Utility Model Content
[0003] The purpose of this utility model is to provide a backrest assembly and a backrest chair. The support module includes a first support part and a second support part; the first support part and the second support part are an integral structure or a separate structure; the first support part is used to support the user's buttocks; the second support part extends along the periphery of the first support part and supports the user's waist in an arc direction; a controller is connected to the second support part; the backrest cushion has an inner core layer; the inner core layer is connected to the second support part; the inner core layer is connected to a vibrating element, an electric heating element and multiple conductive elements; the vibrating element is connected to a first side wall of the inner core layer facing the second support part; the electric heating element is connected to a second side wall of the inner core layer facing away from the second support part; the inner core layer has a through hole, and the second conductive element connected to the electric heating element passes through the through hole and extends toward the controller; the first conductive element connected to the vibrating element runs along the first side wall and extends toward the controller. Through the vibrating element and the electric heating element, multiple functions of massage are achieved for the user, avoiding only a support effect, improving the functionality of the backrest assembly, while meeting the wiring requirements, making full use of the structure of the inner core layer, and improving the space utilization of the backrest assembly.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a backrest assembly applied to a backrest chair, the backrest assembly comprising:
[0005] The support module includes a first support part and a second support part; the first support part and the second support part are an integral structure or a separate structure; the first support part is used to support the user's buttocks; the second support part extends along the circumferential direction of the first support part and supports the user's waist in an arc direction.
[0006] The controller is connected to the second support unit;
[0007] The backrest cushion has an inner core layer; the inner core layer is connected to the second support portion; the inner core layer is connected to a vibrating element, a heating element, and multiple conductive elements; the vibrating element is connected to a first sidewall of the inner core layer facing the second support portion; the heating element is connected to a second sidewall of the inner core layer facing away from the second support portion.
[0008] The inner core layer is provided with a through hole, and the second conductive element connected to the heating element passes through the through hole and extends toward the controller; the first conductive element connected to the vibrating element runs along the first side wall and extends toward the controller.
[0009] Optionally, the inner core layer is connected to a connecting layer, and the inner core layer and the connecting layer are either an integral structure or a separate structure;
[0010] The connecting layer is located between the inner core layer and the second support portion, and is connected to the second support portion;
[0011] The connecting layer and the inner core layer cover the vibrating element; a first conductive element connected to the vibrating element passes through the wiring channel formed by the connecting layer and the inner core layer.
[0012] Optionally, the wiring channel is a groove in the inner core layer and is covered by the connecting layer;
[0013] Alternatively, the wiring channel may be an interlayer channel between the connecting layer and the inner core layer.
[0014] Optionally, both the inner core layer and the connecting layer are flexible layers;
[0015] The first conductive element connected to the vibrating element is clamped by the inner core layer and the connecting layer, and is subjected to the flexible force of the inner core layer and the connecting layer.
[0016] Optionally, the inner core layer is connected to a connecting piece, the connecting piece is arranged relative to the wiring channel, and the connecting piece is bonded to the inner core layer and the first conductive element connected to the vibrating element to position the first conductive element connected to the vibrating element.
[0017] Optionally, the connection layer is provided with through holes, which are arranged relative to the controller;
[0018] The wiring channels formed by the connecting layer and the inner core layer, and the vias converge at the same through hole along different directions;
[0019] The second conductive element connected to the heating element and the first conductive element connected to the vibrating element can converge at the through hole.
[0020] Optionally, there are multiple heating elements, which are distributed at different positions in the inner core layer;
[0021] The plurality of heating elements include a first heating element and a second heating element, which are arranged on both sides of the central axis of the inner core layer;
[0022] A second conductive element connected to the first heating element passes through the inner core layer and through the wiring channel formed by the connecting layer and the inner core layer, and the through hole;
[0023] A second conductive element connected to the second heating element passes through the through hole and through the via;
[0024] Each of the second conductive elements is electrically connected to the controller.
[0025] Optionally, the inner core layer is connected to a red light element, and a conductive element connected to the red light element passes through the inner core layer and through the through hole; the conductive element connected to the red light element is electrically connected to the controller.
[0026] Optionally, the backrest cushion has an outer skin portion; the outer skin portion is located on the outer surface of the inner core layer and covers the heating element, and the outer skin portion is used to contact the user's back.
[0027] To achieve the above objectives, the present invention provides the following technical solution: a backrest chair, including the aforementioned backrest assembly.
[0028] Compared with the prior art, the beneficial effects of this utility model are:
[0029] This utility model provides a backrest assembly and a backrest chair. The support module includes a first support part and a second support part; the first support part and the second support part are an integral structure or a separate structure; the first support part is used to support the user's buttocks; the second support part extends along the periphery of the first support part and supports the user's waist in an arc direction; a controller is connected to the second support part; the backrest cushion has an inner core layer; the inner core layer is connected to the second support part; the inner core layer is connected to a vibrating element, an electric heating element and multiple conductive elements; the vibrating element is connected to a first sidewall of the inner core layer facing the second support part; the electric heating element is connected to a second sidewall of the inner core layer facing away from the second support part; the inner core layer has a through hole, and the second conductive element connected to the electric heating element passes through the through hole and extends toward the controller; the first conductive element connected to the vibrating element runs along the first sidewall and extends toward the controller. Through the vibrating element and the electric heating element, multiple functions of massage are achieved for the user, avoiding only a support effect, improving the functionality of the backrest assembly, while meeting the wiring requirements, making full use of the structure of the inner core layer, and improving the space utilization of the backrest assembly. Attached Figure Description
[0030] 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.
[0031] 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.
[0032] Figure 1 A schematic diagram of a back-mounted component according to an embodiment of this application is shown.
[0033] Figure 2 A schematic diagram of a support module of a backing component according to an embodiment of this application is shown.
[0034] Figure 3 A schematic diagram of a backrest cushion of a backrest assembly according to one embodiment of this application is shown.
[0035] Figure 4 An exploded view of the backrest cushion of a backrest assembly according to one embodiment of this application is shown.
[0036] Figure 5 A schematic diagram of the internal structure of the backrest cushion of a backrest assembly according to an embodiment of this application is shown.
[0037] Figure 6 It shows Figure 5 A magnified view of a portion of point A in the middle.
[0038] Figure Labels
[0039] 100. Back-mounted components;
[0040] 10. Support module; 11. First support section; 12. Second support section;
[0041] 20. Controller;
[0042] 30. Backrest cushion; 31. Inner core layer; 31a. Through hole; 32. Vibration element; 33. Heating element; 341. First conductive element; 342. Second conductive element; 35. Connecting layer; 35a. Through hole; 36. Connecting piece; 37. Infrared light element; 38. Outer skin. Detailed Implementation
[0043] 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.
[0044] Please refer to the attached document. Figures 1-6 This application provides a backrest component 100, which is applied to a backrest chair and is used to provide multiple massage functions to the user.
[0045] Please refer to the attached document. Figures 1-6 In this embodiment, the backrest assembly 100 includes a support module 10, a controller 20, and a backrest cushion 30. The support module 10 includes a first support portion 11 and a second support portion 12. The first support portion 11 and the second support portion 12 are either an integral structure or a separate structure. The first support portion 11 supports the user's buttocks. The second support portion 12 extends along the circumferential direction of the first support portion 11 and supports the user's waist in an arc direction. The controller 20 is connected to the second support portion 12. The backrest cushion 30 has an inner core layer 31. The inner core layer 31 is connected to the second support portion 12. The inner core layer 31 is connected to a vibration element 32, an electric heating element 33, and a plurality of conductive elements 34. The vibration element 32 is connected to the inner core layer 31. The core layer 31 has a first sidewall facing the second support portion 12; the heating element 33 is connected to the second sidewall of the inner core layer 31 facing away from the second support portion 12; the inner core layer 31 has a through hole 31a, and the second conductive element 342 connected to the heating element 33 passes through the through hole 31a and extends toward the controller 20; the first conductive element 341 connected to the vibration element 32 runs along the first sidewall and extends toward the controller 20. Through the vibration element 32 and the heating element 33, multiple functions of massage are realized for the user, avoiding only the support effect, improving the functionality of the backrest assembly 100, while meeting the wiring requirements, making full use of the structure of the inner core layer 31, and improving the space utilization of the backrest assembly 100.
[0046] Please refer to the attached document. Figures 1-6In this embodiment, the support module 10 includes a first support portion 11 and a second support portion 12. The first support portion 11 and the second support portion 12 are either an integral structure or a separate structure. When the first support portion 11 and the second support portion 12 are an integral structure, the connection strength between the first support portion 11 and the second support portion 12 is improved, ensuring the connection stability of the first support portion 11 and the second support portion 12. When the first support portion 11 and the second support portion 12 are separate structures, it facilitates the connection or disconnection of the first support portion 11 and the second support portion 12, improving the ease of installation and removal of the first support portion 11 and the second support portion 12. Optionally, the first support portion 11 and the second support portion 12 can be made into a separate structure by means of interlocking.
[0047] The first support part 11 is used to support the user's buttocks; the second support part 12 extends along the periphery of the first support part 11 and supports the user's waist in an arc direction; so that the support module 10 can support the user through the first support part 11 and the second support part 12, thereby facilitating the adjustment of the contact point between the human body and the seat.
[0048] The controller 20 is arranged relative to the second support 12 and is connected to the second support 12 so that the controller 20 can be fixed to the second support 12.
[0049] The backrest cushion 30 has an inner core layer 31; the inner core layer 31 is connected to the second support part 12; the inner core layer 31 is connected to a vibrating element 32, an electric heating element 33 and multiple conductive elements 34; the vibrating element 32 is connected to the first side wall of the inner core layer 31 facing the second support part 12; the electric heating element 33 is connected to the second side wall of the inner core layer 31 facing away from the second support part 12; the inner core layer 31 has a through hole 31a, and the second conductive element 342 connected to the electric heating element 33 passes through the through hole 31a and extends toward the controller 20; the first conductive element 341 connected to the vibrating element 32 runs along the first side wall and extends toward the controller 20. Through the vibrating element 32 and the electric heating element 33, multiple functions of massage are realized for the user, avoiding only the support effect, improving the functionality of the backrest assembly 100, while meeting the wiring requirements, making full use of the structure of the inner core layer 31, and improving the space utilization of the backrest assembly 100.
[0050] Please refer to the attached document. Figures 1-6In this embodiment, the inner core layer 31 is connected to a connecting layer 35. The inner core layer 31 and the connecting layer 35 are either an integral structure or a separate structure. When the inner core layer 31 and the connecting layer 35 are an integral structure, the connection strength between the inner core layer 31 and the connecting layer 35 is improved, ensuring the connection stability between the inner core layer 31 and the connecting layer 35. When the inner core layer 31 and the connecting layer 35 are separate structures, the connecting layer 35 can be connected to or detached from the inner core layer 31, improving the ease of installation and removal of the inner core layer 31 and the connecting layer 35. Optionally, the inner core layer 31 and the connecting layer 35 are detachably connected by adhesive bonding.
[0051] The connecting layer 35 is located between the inner core layer 31 and the second support portion 12, and is connected to the second support portion 12; so that the inner core layer 31 can be connected to the second support portion 12 through the connecting layer 35. The connecting layer 35 and the inner core layer 31 cover the vibrating element 32, so that the connecting layer 35 and the inner core layer 31 can provide a certain degree of protection for the vibrating element 32; the first conductive element 341 connected to the vibrating element 32 passes through the wiring channel 31b formed by the connecting layer 35 and the inner core layer 31, so that the first conductive element 341 can be connected to the controller 20 through the wiring channel 31b, thereby facilitating the controller 20 to control the vibrating element 32 through the first conductive element 341.
[0052] Please refer to the attached document. Figures 1-6 In this embodiment, the wiring channel 31b is a groove in the inner core layer 31 and is covered by the connecting layer 35. The groove in the inner core layer 31 provides a relatively fixed physical space for the first conductive element 341, preventing it from moving around arbitrarily. The connecting layer 35 covers the groove, further preventing the first conductive element 341 from being subjected to external physical damage, such as scratches or collisions, thus protecting the first conductive element 341. Alternatively, the wiring channel 31b can be a sandwich channel between the connecting layer 35 and the inner core layer 31, hiding the first conductive element 341 between the connecting layer 35 and the inner core layer 31, making the first conductive element 341 less likely to be directly observed from the outside, thus improving the aesthetics of the backrest cushion 30.
[0053] Please refer to the attached document. Figures 1-6 In this embodiment, both the inner core layer 31 and the connecting layer 35 are flexible layers. The first conductive element 341, connected to the vibrating element 32, is clamped by the inner core layer 31 and the connecting layer 35 and subjected to the flexible force of the inner core layer 31 and the connecting layer 35. When the backrest cushion 30 deforms, the flexible layer can deform with the deformation of the backrest cushion 30, preventing the first conductive element 341 from breaking or being damaged due to excessive stretching or compression, and ensuring that the first conductive element 341 still maintains a good electrical connection under deformation. At the same time, the flexible layer can provide cushioning for the first conductive element 341, reducing the impact of external impacts and vibrations on the first conductive element 341.
[0054] Please refer to the attached document. Figures 1-6 In this embodiment, the inner core layer 31 is connected to a connecting piece 36. The connecting piece 36 is arranged relative to the wiring channel 31b. The connecting piece 36 is bonded to the inner core layer 31 and the first conductive element 341 connected to the vibrating element 32 to position the first conductive element 341 connected to the vibrating element 32, thereby restricting the position of the first conductive element 341 connected to the vibrating element 32 and preventing the first conductive element 341 connected to the vibrating element 32 from swaying. Optionally, there are multiple connecting pieces 36, which are spaced apart along the length direction of the first conductive element 341 connected to the vibrating element 32.
[0055] Please refer to the attached document. Figures 1-6 In this embodiment, the connecting layer 35 is provided with a through hole 35a, which is arranged relative to the controller 20. The wiring channels 31b and vias 31a formed by the connecting layer 35 and the inner core layer 31 converge at the same through hole 35a along different directions. The second conductive element 342 connected to the heating element 33 and the first conductive element 341 connected to the vibration element 32 can converge at the through hole 35a, so that the second conductive element 342 connected to the heating element 33 and the first conductive element 341 connected to the vibration element 32 can extend to the controller 20 through the through hole 35a, thereby facilitating the electrical connection between the second conductive element 342 connected to the heating element 33 and the first conductive element 341 connected to the vibration element 32 and the controller 20. At the same time, the inner contour of the through hole 35a restricts the range of motion of the second conductive element 342 connected to the heating element 33 and the first conductive element 341 connected to the vibration element 32.
[0056] Please refer to the attached document. Figures 1-4 In this embodiment, there are multiple heating elements 33, which are distributed at different positions in the inner core layer 31 so that the multiple heating elements 33 can make full use of the internal space of the inner core layer 31. Multiple heating elements 33 include a first heating element 331 and a second heating element 332, which are arranged on both sides of the central axis of the inner core layer 31. A second conductive element 342 connected to the first heating element 331 passes through the inner core layer 31 and through the wiring channel 31b and through hole 35a formed by the connecting layer 35 and the inner core layer 31. A second conductive element 342 connected to the second heating element 332 passes through the through hole 31a and through hole 35a. This allows the second conductive elements 342 connected to the first heating element 331 and the second heating element 332 to extend to the controller 20. Each second conductive element 342 is electrically connected to the controller 20 so that the controller 20 can control the start-up or shutdown of the first heating element 331 and the second heating element 332.
[0057] Please refer to the attached document. Figures 1-4In this embodiment, the inner core layer 31 is connected to a red light element 37, and a conductive element 34 connected to the red light element 37 passes through the inner core layer 31 and through a through hole 35a so that the conductive element 34 connected to the red light element 37 extends to the controller 20; the conductive element 34 connected to the red light element 37 is electrically connected to the controller 20 so that the controller 20 can control the start or stop of the red light element 37, and the red light element 37 is used to perform red light therapy on the user's waist.
[0058] Please refer to the attached document. Figures 1-3 In this embodiment, the backrest cushion 30 is provided with an outer skin portion 38; the outer skin portion 38 is located on the outer surface of the inner core layer 31 and covers the heating element 33. The outer skin portion 38 is used to contact the user's back so that the outer skin portion 38 can evenly transfer the heat generated by the heating element 33 to the user's back. The outer skin portion 38 can reduce heat loss and improve the thermal efficiency of the heating element 33.
[0059] In a second application embodiment, a backrest chair includes a backrest assembly 100, which is part of the backrest chair. The backrest chair is used to adjust the contact point between the human body and the seat to obtain a more comfortable angle to reduce user fatigue.
[0060] At this time, the backrest assembly 100 includes a support module 10, a controller 20, and a backrest cushion 30. The support module 10 includes a first support part 11 and a second support part 12; the first support part 11 and the second support part 12 are either an integral structure or a separate structure; the first support part 11 is used to support the user's buttocks; the second support part 12 extends along the circumferential direction of the first support part 11 and supports the user's waist in an arc direction; the controller 20 is connected to the second support part 12; the backrest cushion 30 is provided with an inner core layer 31; the inner core layer 31 is connected to the second support part 12; the inner core layer 31 is connected to a vibrating element 32, an electric heating element 33, and a plurality of conductive elements 34; the vibrating element 32 is connected to the inner core layer 30. The first sidewall of the inner core layer 31 faces the second support portion 12; the heating element 33 is connected to the second sidewall of the inner core layer 31 facing away from the second support portion 12; the inner core layer 31 is provided with a through hole 31a, and the second conductive element 342 connected to the heating element 33 passes through the through hole 31a and extends toward the controller 20; the first conductive element 341 connected to the vibration element 32 runs along the first sidewall and extends toward the controller 20. Through the vibration element 32 and the heating element 33, multiple functions of massage are realized for the user, avoiding only the support effect, improving the functionality of the backrest assembly 100, while meeting the wiring requirements, making full use of the structure of the inner core layer 31, and improving the space utilization of the backrest assembly 100.
[0061] Compared with the prior art, the beneficial effects of this utility model are:
[0062] This utility model provides a backrest assembly 100 and a backrest chair. The support module 10 includes a first support part 11 and a second support part 12. The first support part 11 and the second support part 12 are either an integral structure or a separate structure. The first support part 11 is used to support the user's buttocks. The second support part 12 extends along the circumferential direction of the first support part 11 and supports the user's waist along an arc direction. A controller 20 is connected to the second support part 12. The backrest cushion 30 is provided with an inner core layer 31. The inner core layer 31 is connected to the second support part 12. The inner core layer 31 is connected to a vibrating element 32, an electric heating element 33, and a plurality of conductive elements 34. The vibrating element 32 is connected to the inner core layer 31 facing the first support part 12. The first sidewall of the second support part 12; the heating element 33 is connected to the second sidewall of the inner core layer 31 facing away from the second support part 12; the inner core layer 31 is provided with a through hole 31a, and the second conductive element 342 connected to the heating element 33 passes through the through hole 31a and extends toward the controller 20; the first conductive element 341 connected to the vibration element 32 runs along the first sidewall and extends toward the controller 20. Through the vibration element 32 and the heating element 33, multiple functions of massage are realized for the user, avoiding only the support effect, improving the functionality of the backrest assembly 100, while meeting the wiring requirements, making full use of the structure of the inner core layer 31, and improving the space utilization of the backrest assembly 100.
[0063] 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.
[0064] 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.
[0065] 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. A back-mounted component, characterized in that, Applied to a backrest chair, the backrest assembly includes: The support module includes a first support part and a second support part; the first support part and the second support part are an integral structure or a separate structure; the first support part is used to support the user's buttocks; the second support part extends along the circumferential direction of the first support part and supports the user's waist in an arc direction. The controller is connected to the second support unit; The backrest cushion has an inner core layer; the inner core layer is connected to the second support portion; the inner core layer is connected to a vibrating element, a heating element, and multiple conductive elements; the vibrating element is connected to a first sidewall of the inner core layer facing the second support portion; the heating element is connected to a second sidewall of the inner core layer facing away from the second support portion. The inner core layer is provided with a through hole, and the second conductive element connected to the heating element passes through the through hole and extends toward the controller; the first conductive element connected to the vibrating element runs along the first side wall and extends toward the controller.
2. The back-support assembly according to claim 1, characterized in that, The inner core layer is connected to a connecting layer, and the inner core layer and the connecting layer are either an integral structure or a separate structure. The connecting layer is located between the inner core layer and the second support portion, and is connected to the second support portion; The connecting layer and the inner core layer cover the vibrating element; The first conductive element connected to the vibrating element passes through the wiring channel formed by the connecting layer and the inner core layer.
3. The back-support assembly according to claim 2, characterized in that, The wiring channel is a groove in the inner core layer and is covered by the connecting layer; Alternatively, the wiring channel may be an interlayer channel between the connecting layer and the inner core layer.
4. The back-support assembly according to claim 2, characterized in that, Both the inner core layer and the connecting layer are flexible layers; The first conductive element connected to the vibrating element is clamped by the inner core layer and the connecting layer, and is subjected to the flexible force of the inner core layer and the connecting layer.
5. The back-support assembly according to claim 2, characterized in that, The inner core layer is connected to a connecting piece, which is arranged relative to the wiring channel. The connecting piece is bonded to the inner core layer and to the first conductive element connected to the vibrating element to position the first conductive element connected to the vibrating element.
6. The back-support assembly according to claim 2, characterized in that, The connection layer is provided with through holes, which are arranged relative to the controller; The wiring channels formed by the connecting layer and the inner core layer, and the vias converge at the same through hole along different directions; The second conductive element connected to the heating element and the first conductive element connected to the vibrating element can converge at the through hole.
7. The back-support assembly according to claim 6, characterized in that, The heating element is multiple, and the multiple heating elements are distributed at different positions in the inner core layer; The plurality of heating elements include a first heating element and a second heating element, which are arranged on both sides of the central axis of the inner core layer; A second conductive element connected to the first heating element passes through the inner core layer and through the wiring channel formed by the connecting layer and the inner core layer, and the through hole; A second conductive element connected to the second heating element passes through the through hole and through the via; Each of the second conductive components is electrically connected to the controller.
8. The back-support assembly according to claim 6, characterized in that, The inner core layer is connected to a red light element, and a conductive element connected to the red light element passes through the inner core layer and through the through hole; the conductive element connected to the red light element is electrically connected to the controller.
9. The back-support assembly according to claim 1, characterized in that, The backrest cushion has an outer skin portion; the outer skin portion is located on the outer surface of the inner core layer and covers the heating element; the outer skin portion is used to contact the user's back.
10. A backrest chair, characterized in that, Includes the back support component as described in any one of claims 1 to 9.