Self-adaptive swing mechanism of seat waist support and seat
The self-adaptive waist support mechanism addresses the issue of fixed waist supports by dynamically adjusting to user postures, providing consistent support across different sitting positions.
Patent Information
- Application Number
- CN202422410379.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Existing seat lumbar support cannot provide effective support when the user is in different sitting positions, resulting in poor comfort.
An adaptive swing mechanism for the seat lumbar support is designed. Through the pivotal connection of the lumbar support back plate with the support seat and the cooperation of the elastic element, the lumbar support can automatically adjust the deflection angle according to the user's sitting posture and provide elastic support.
The lumbar support can be adjusted adaptively in different sitting positions, ensuring that the user's waist achieves better support effect and improving the comfort of the seat.
Smart Images
Figure CN223095133U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of seats, in particular to an adaptive swing mechanism for a seat lumbar support and a seat. Background Art
[0002] Traditional seats support the user's back through the seat backrest, and the user's lumbar support is in a suspended state. The seat cannot provide support for the user's waist, resulting in waist fatigue. In order to improve the comfort of the seat, some e-sports seats, office seats, etc. are equipped with lumbar supports on the backrests to support the user's waist and avoid waist fatigue caused by the waist being suspended. However, most of the existing seat lumbar supports are fixedly installed on the backrest of the seat, and they can only provide better support for the user's waist when in a fixed position and the user is in a fixed sitting posture. When the user is in different sitting postures, they cannot provide better support. For example, when the user's waist deflects, the lumbar support in a fixed posture cannot adapt to the deflected sitting posture of the user, resulting in poor comfort of the seat. Summary of the Utility Model
[0003] The purpose of the utility model is to provide an adaptive swing mechanism for a seat lumbar support and a seat, which can adaptively adjust the deflection angle of the lumbar support according to the user's sitting posture to ensure that the user's waist can obtain better support effects in different sitting postures.
[0004] To achieve the above purpose, the utility model adopts the following technical solutions:
[0005] An adaptive swing mechanism for a seat lumbar support, comprising a lumbar support back plate and a support seat;
[0006] The lumbar support back plate includes a front side surface and a rear side surface opposite to the front side surface. The lumbar support is installed on the front side surface of the lumbar support back plate. A pivot connection part is arranged on the rear side surface of the lumbar support back plate. The support seat is connected to the backrest or seat cushion of the seat and is placed at the rear of the lumbar support back plate. The pivot connection part of the lumbar support back plate is pivotally connected to the support seat so that the lumbar support back plate can rotate relative to the support seat around an axis extending in the up and down direction;
[0007] Two support parts are arranged on the support seat, and the two support parts are respectively located on both sides of the support seat. Two support surfaces are respectively arranged on the lumbar support back plate, and the two support surfaces are respectively matched with the two support parts. An elastic element is arranged between the mutually matched support surface and support part, and the elastic element is used to provide an elastic stress for pushing the support surface in a direction away from the support part.
[0008] Preferably, the support seat includes a mounting seat connected to the backrest or seat cushion of the seat, a first rotating shaft fixed to the top of the mounting seat, and a second rotating shaft fixed to the bottom of the mounting seat. Both the first rotating shaft and the second rotating shaft extend in the up and down direction, and both the first rotating shaft and the second rotating shaft are pivotally connected to the pivot connection part.
[0009] Preferably, the pivotal connection part includes two shaft holes provided on the lumbar support back plate, and the first rotating shaft and the second rotating shaft are respectively inserted into the two shaft holes so that the lumbar support back plate can rotate relative to the support seat around the axis.
[0010] Preferably, the pivotal connection part includes two semi-circular grooves located on the rear side surface of the lumbar support back plate and two connection seats detachably fixed on the rear side surface of the lumbar support back plate. The two connection seats are respectively located at the rear sides of the two semi-circular grooves. A semi-circular concave position is provided on the part of the connection seat facing the semi-circular groove, and the semi-circular concave position and the semi-circular groove jointly form a shaft hole.
[0011] Preferably, a clearance groove is formed on the part of the lumbar support back plate between the two semi-circular grooves, and the mounting seat is placed in the clearance groove so that the mounting seat can avoid the lumbar support back plate when the lumbar support back plate rotates relative to the support seat.
[0012] Preferably, two forwardly recessed mounting grooves are provided on the rear side surface of the lumbar support back plate. The bottom surfaces of the two mounting grooves respectively form two support surfaces, and at least a part of the elastic element is embedded in the mounting grooves.
[0013] Preferably, a retaining wall surrounding the mounting groove is provided on the rear side surface of the lumbar support back plate, and a receiving space for receiving the support part is formed by the retaining wall.
[0014] Preferably, a notch is provided on each part of the two retaining walls close to the support seat. Two connecting arms are provided on the first rotating shaft or the second rotating shaft. The two connecting arms respectively extend away from the support seat from both sides of the first rotating shaft or the second rotating shaft to pass through the notches of the two retaining walls and extend into the receiving space. The parts of the two connecting arms located in the two receiving spaces respectively form a support part.
[0015] Preferably, a connecting column extending towards the bottom surface of the mounting groove is provided on the support part. The elastic element is a spring. One end of the spring abuts against the bottom surface of the mounting groove, and the other end is sleeved around the connecting column and abuts against the support part.
[0016] A seat, comprising the adaptive swing mechanism of the above-mentioned seat lumbar support.
[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0018] In the present utility model, the lumbar support backboard is pivotally connected to the support base, enabling the lumbar support on the lumbar support backboard to have the freedom of rotation relative to the backrest or seat cushion of the seat. Two elastic elements respectively provide elastic support for the lumbar support backboard on both sides of the joint between the support base and the lumbar support backboard. When the user leans sideways, the elastic stress generated after the corresponding elastic element contracts reaches equilibrium with the pressure from the user's waist, ultimately enabling the lumbar support to adapt to the user's sitting posture, that is, the lumbar support can adaptively adjust the deflection angle of the lumbar support according to the user's sitting posture, ensuring that the waist can obtain a better support effect when the user is in different sitting postures. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a schematic structural diagram of the present utility model;
[0020] Figure 2 is an installation schematic diagram of the present utility model;
[0021] Figure 3 is Figure 1 A - A cross-sectional view of
[0022] Figure 4 is a schematic diagram of a use state of the present utility model.
[0023] Wherein: 10, lumbar support backboard; 101, front side; 102, rear side; 11, installation groove; 12, retaining wall; 13, notch; 14, semi-circular groove; 15, semi-circular groove; 16, clearance groove; 17, connecting seat; 171, semi-circular recess; 18, connecting seat; 181, semi-circular recess; 20, support base; 21, first rotating shaft; 22, second rotating shaft; 23, mounting seat; 24, connecting arm; 241, supporting part; 242, connecting column; 30, spring. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] Next, in combination with the drawings and specific embodiments, the present utility model will be further described. It should be noted that on the premise of no conflict, any combination can be formed between the following-described embodiments or technical features to form new embodiments. Except for special instructions, the materials and equipment used in this embodiment can be purchased from the market. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.
[0025] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application 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 application. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically and precisely defined.
[0026] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "connected", "communicated", "connected" should be understood in a broad sense. For example, it can be a fixed connection, or it can be connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to specific circumstances.
[0027] As Figure 1 , 2 As shown in Figures 3 and 4, an adaptive swing mechanism for a seat lumbar support of the present utility model includes a lumbar support back plate 10 and a support seat 20. The lumbar support back plate 10 includes a front side surface 101 and a rear side surface 102 opposite to the front side surface 101. The lumbar support of the seat is installed on the front side surface 101 of the lumbar support back plate 10. A pivot connection portion is provided on the rear side surface 102 of the lumbar support back plate 10. The pivot connection portion is pivotally connected to the support seat 20 so that the lumbar support back plate 10 can rotate relative to the support seat 20 about an axis extending vertically. The support seat 20 is connected to the backrest of the seat. Based on the relative rotation structure of the lumbar support back plate 10 and the support seat 20, the lumbar support has a degree of freedom to swing relative to the backrest of the seat. Two support portions 241 are provided on the support seat 20. The two support portions 241 are respectively located on both sides of the support seat 20, so that both support portions 241 deviate from the above-mentioned axis extending vertically. Two support surfaces are respectively provided on the lumbar support back plate 10. The two support surfaces respectively match the two support portions 241. The support portion 241 is located behind the support surface matching it, and a spring 30 is provided between the two. The spring 30 is used to provide an elastic stress that pushes the support surface in a direction away from the support portion 241. That is to say, the spring 30 can push the support surface forward. When one side of the lumbar support back plate 10 receives a backward pressure from the user's waist, the spring 30 on the corresponding side contracts, causing the side of the lumbar support back plate 10 that is stressed to deflect backward.
[0028] See Figure 4As shown, during use, when the user leans to the left, their waist presses the lumbar support backward. The left side of the lumbar support backplate 10 receives the pressure from the user's waist. The left spring 30 is compressed and contracted by the support surface on the left side of the lumbar support backplate 10, causing the lumbar support to deflect to the left as a whole with the lumbar support backplate 10. The gradual contraction of the left spring 30 causes the elastic squeezing force it exerts on the left support surface to gradually increase until the elastic stress of the left spring 30 balances the pressure from the user's waist, making the angle of the lumbar support deflecting to the left with the lumbar support backplate 10 exactly adapt to the sitting posture of the user leaning to the left, and then enabling the swing angle of the lumbar support to automatically adapt to the posture of the user leaning sideways. When the user leans to the right, through the contraction of the right spring 30, the swing angle of the lumbar support automatically adapts to the posture of the user leaning to the right.
[0029] It should be noted that the spring 30 of the present utility model can be replaced by other elastic elements. For example, an elastic rubber block can be provided between the support surface and the support portion 241, or other elastic elements that can generate a gradually increasing elastic stress after being gradually squeezed. In the above solution, the support seat 20 is connected to the backrest of the seat, and then the lumbar support is connected to the backrest of the seat. In other embodiments, the support seat 20 can also be installed on the seat cushion of the seat, and then the lumbar support is connected to the seat cushion of the seat.
[0030] In the present utility model, the lumbar support backplate 10 is pivotally connected to the support seat 20, so that the lumbar support located on the lumbar support backplate 10 has the freedom to rotate relative to the backrest or seat cushion of the seat. By providing elastic support for the lumbar support backplate 10 on both sides of the cooperation between the support seat 20 and the lumbar support backplate 10 through two elastic elements, when the user leans sideways, the elastic stress generated after the corresponding elastic element contracts balances the pressure from the user's waist, and finally enables the lumbar support to adapt to the user's sitting posture, that is, the lumbar support can adaptively adjust the deflection angle of the lumbar support according to the user's sitting posture to ensure that the waist can obtain a better support effect when the user is in different sitting postures.
[0031] In a preferred embodiment, the above-mentioned support base 20 includes a mounting base 23 connected to the backrest or seat cushion of the seat, a first rotating shaft 21, and a second rotating shaft 22. The first rotating shaft 21 is fixedly connected to the top of the mounting base 23, and the second rotating shaft 22 is fixedly connected to the bottom of the mounting base 23. The mounting base 23 is used to facilitate the connection of the support base 20 to the backrest or seat cushion of the seat. Both the first rotating shaft 21 and the second rotating shaft 22 extend in the up and down directions, and both the first rotating shaft 21 and the second rotating shaft 22 are pivotally connected to the pivoting connection portion, enabling the lumbar support back plate 10 to rotate relative to the support base 20 about an axis extending in the up and down direction. Moreover, the first rotating shaft 21 and the second rotating shaft 22 are respectively provided at the top and bottom of the support base 20. The first rotating shaft 21 and the second rotating shaft 22 can not only enable the lumbar support back plate 10 to be pivotally connected to the support base 20, but also can better support the lumbar support back plate 10. The pivoting connection portion includes two shaft holes provided on the lumbar support back plate 10. The first rotating shaft 21 and the second rotating shaft 22 are respectively inserted into the two shaft holes, enabling the lumbar support back plate 10 to rotate relative to the support base 20 about an axis extending in the up and down direction. For the convenience of assembly, in the present utility model, the above-mentioned shaft holes are formed by an assembled manner. Specifically, the pivoting connection portion includes semi-circular grooves 14 and 15 located on the rear side surface 102 of the lumbar support back plate 10, as well as connection seats 17 and 18. A semi-circular concave position 171 is provided on the connection seat 17, and a semi-circular concave position 181 is provided on the connection seat 18. The connection seat 17 is detachably fixed to the rear side surface 102 of the lumbar support back plate 10 by bolts or other connection means. The semi-circular concave position 171 on the connection seat 17 is disposed opposite to the semi-circular groove 14, and the semi-circular concave position 171 and the semi-circular groove 14 are butted together to form a shaft hole for the first rotating shaft 21 to penetrate. Similarly, the connection seat 18 is detachably fixed to the rear side surface 102 of the lumbar support back plate 10 by bolts or other connection means. The semi-circular concave position 181 on the connection seat 18 and the semi-circular groove 15 together form a shaft hole for the second rotating shaft 22 to penetrate. During assembly, the first rotating shaft 21 is embedded into the semi-circular groove 14, the second rotating shaft 22 is embedded into the semi-circular groove 15, and then the connection seats 17 and 18 are fixed to the rear side surface 102 of the lumbar support back plate 10, thereby connecting the lumbar support back plate 10 and the support base 20 together and ensuring their rotatable cooperation.
[0032] A clearance groove 16 is formed on the lumbar support back plate 10 between the semi-circular grooves 14 and 15. The mounting base 23 is located inside the clearance groove 16. When the lumbar support back plate 10 rotates relative to the support base 20, the clearance groove 16 can avoid the mounting base 23, preventing interference between the lumbar support back plate 10 and the support base 20 during rotation. At the same time, it can also be that a mounting base 23 with a larger size is configured on the support base 20 to facilitate the connection of the mounting base 23 to the backrest or seat cushion of the seat.
[0033] In the present utility model, two forwardly recessed mounting grooves 11 are provided on the rear side surface 102 of the lumbar support back plate 10. The bottom surfaces of the two mounting grooves 11 respectively form two support surfaces. A part of the spring 30 is embedded in the mounting groove 11. By providing the mounting groove 11, an installation space is provided for the spring 30, enabling the spring 30 to generate sufficient deformation to ensure that the rotation angle of the lumbar support back plate 10 relative to the support base 20 can meet the requirements and adapt to different sitting postures of the user. A retaining wall 12 surrounding the mounting groove 11 is provided on the rear side surface 102 of the lumbar support back plate 10. A receiving space for receiving the support portion 241 is enclosed by the retaining wall 12. The support portion 241 is placed in the receiving space and abuts against the rear end side of the spring 30, causing the front end side of the spring 30 to abut against the support surface. A notch 13 is provided on each part of the two retaining walls 12 close to the support base 20. A connecting arm 24 is provided on each side of the first rotating shaft 21. The two connecting arms 24 extend away from the support base 20 from both sides of the first rotating shaft 21, causing the two connecting arms 24 to respectively pass through the notches 13 provided on the two retaining walls 12. The end portions of the two connecting arms 24 respectively extend into the receiving space through the two notches 13. The parts of the two connecting arms 24 located in the two receiving spaces respectively form a support portion 241. By providing the retaining wall 12 to enclose the receiving space, the receiving space is communicated with the internal space of the mounting groove 11, providing sufficient space for the spring 30 and the support portion 241, ensuring that the spring 30 has sufficient length dimensions to increase the range of the rotation angle of the lumbar support back plate 10 relative to the support base 20, and then adapting to the self-adaptive adjustment of the lumbar support within a relatively large swing range. A connecting column 242 extending towards the bottom surface (i.e., the support surface) of the mounting groove 11 is provided on the support portion 241. One end of the spring 30 abuts against the bottom surface of the mounting groove 11, and the other end is sleeved around the connecting column 242 and abuts against the support portion 241.
[0034] It should be noted that in the present utility model, the two connecting arms 24 can also be provided on the second rotating shaft 22.
[0035] The seat of the present utility model includes the self-adaptive swing mechanism of the above-mentioned seat lumbar support. The other structures of the seat are the same as those in the prior art and will not be described in detail here.
[0036] Finally, it should be noted that the above-mentioned embodiments are only optional embodiment modes of the present utility model and cannot be used to limit the protection scope of the present utility model. Any non-substantive changes and substitutions made by those skilled in the art based on the present utility model fall within the protection scope required by the present utility model.
Claims
1. Adaptive swing mechanism for seat lumbar support, characterized in that, It includes a lumbar support backplate and a support seat; The lumbar support backplate includes a front side surface and a rear side surface opposite to the front side surface. The lumbar support is installed on the front side surface of the lumbar support backplate. A pivot connection portion is provided on the rear side surface of the lumbar support backplate. The support seat is connected to the backrest or seat cushion of the seat and is placed at the rear of the lumbar support backplate. The pivot connection portion of the lumbar support backplate is pivotally connected to the support seat so that the lumbar support backplate can rotate relative to the support seat about an axis extending vertically; Two support portions are provided on the support seat, and the two support portions are respectively located on both sides of the support seat. Two support surfaces are respectively provided on the lumbar support backplate, and the two support surfaces respectively match the two support portions. An elastic element is provided between the mutually matching support surface and support portion, and the elastic element is used to provide an elastic stress that pushes the support surface in a direction away from the support portion.
2. The adaptive swing mechanism of the seat lumbar support according to claim 1, characterized in that, The support seat includes a mounting seat connected to the backrest or seat cushion of the seat, a first rotating shaft fixed to the top of the mounting seat, and a second rotating shaft fixed to the bottom of the mounting seat. Both the first rotating shaft and the second rotating shaft extend in the vertical direction, and both the first rotating shaft and the second rotating shaft are pivotally connected to the pivot connection portion.
3. The adaptive swing mechanism of the seat lumbar support according to claim 2, characterized in that, The pivot connection portion includes two shaft holes provided on the lumbar support backplate, and the first rotating shaft and the second rotating shaft are respectively inserted into the two shaft holes so that the lumbar support backplate can rotate relative to the support seat about the axis.
4. The adaptive swing mechanism of the seat lumbar support according to claim 3, characterized in that The pivot connection portion includes two semi-circular grooves located on the rear side surface of the lumbar support backplate, and two connecting seats detachably fixed to the rear side surface of the lumbar support backplate. The two connecting seats are respectively located at the rear of the two semi-circular grooves. A semi-circular concave portion is provided on the part of the connecting seat facing the semi-circular groove, and the semi-circular concave portion and the semi-circular groove together form a shaft hole.
5. The adaptive swing mechanism of the seat lumbar support according to claim 4, wherein A clearance groove is formed on the part of the lumbar support backplate between the two semi-circular grooves, and the mounting seat is placed in the clearance groove so that the mounting seat can avoid the lumbar support backplate when the lumbar support backplate rotates relative to the support seat.
6. The adaptive swing mechanism of the seat lumbar support according to claim 2, characterized in that, Two mounting grooves recessed forward are provided on the rear side surface of the lumbar support backplate, and the bottom surfaces of the two mounting grooves respectively form two support surfaces, and at least a part of the elastic element is embedded in the mounting grooves.
7. The adaptive swing mechanism of the seat lumbar support according to claim 6, characterized in that, A retaining wall surrounding the mounting groove is provided on the rear side surface of the lumbar support backplate, and a receiving space for receiving the support portion is formed by the retaining wall.
8. The adaptive swing mechanism of the seat lumbar support according to claim 7, characterized in that, A notch is provided on each part of the two retaining walls close to the support seat. Two connecting arms are provided on the first rotating shaft or the second rotating shaft. The two connecting arms respectively extend from both sides of the first rotating shaft or the second rotating shaft in a direction away from the support seat to penetrate through the notches of the two retaining walls and extend into the receiving space. The parts of the two connecting arms located in the two receiving spaces respectively form a support portion.
9. The adaptive swing mechanism of the seat lumbar support according to claim 8, characterized in that, A connecting column extending towards the bottom surface of the mounting groove is provided on the support portion. The elastic element is a spring. One end of the spring abuts against the bottom surface of the mounting groove, and the other end is sleeved around the connecting column and abuts against the support portion.
10. Seat, characterized in that, It includes an adaptive swing mechanism of the seat lumbar support according to any one of claims 1-9.