Waist support assembly and seat
By designing a main lumbar support, a secondary lumbar support, and a linkage mechanism, the lumbar support automatically wraps around and loosens itself using elastic elements and a guiding mechanism. This solves the problem of existing lumbar support components requiring manual adjustment, thus improving ease of use and comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU HEIBAIDIAO TECH CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-05-08
AI Technical Summary
Existing lumbar support components require frequent manual adjustment of the secondary lumbar support during use, which is cumbersome and makes it difficult to achieve automatic wrapping and loosening, affecting ease of use.
The design incorporates a main lumbar support, a secondary lumbar support, and a linkage mechanism. The main lumbar support moves automatically through elastic elements and a guiding mechanism, causing the secondary lumbar support to automatically wrap around and loosen the user's waist. The linkage mechanism includes a swing rod, a first link, and a second link. The secondary lumbar support swings inward and outward during the back-and-forth movement of the main lumbar support through the linkage mechanism.
The automatic wrapping and unwrapping of the lumbar support component enhances ease of use, reduces the need for manual adjustment, and improves seat comfort.
Smart Images
Figure CN224206495U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seat technology, specifically to a lumbar support component and a seat. Background Technology
[0002] To prevent the user's lower back from being unsupported and improve chair comfort, many existing office chairs and gaming chairs are equipped with lumbar support components. These components support the user's lower back to prevent fatigue caused by unsupported lower back. Most existing lumbar supports use a fixed support surface to support the user's lower back, leaving the sides of the lower back unsupported. To improve this, some lumbar support components typically include a main lumbar support and two secondary lumbar supports located on either side of the main lumbar support. The secondary lumbar supports are often adjustable and mounted on the sides of the main lumbar support. When side support is needed, the secondary lumbar supports are rotated inwards. While this structure can alleviate lower back fatigue, it requires the user to frequently rotate the secondary lumbar supports, making the process somewhat cumbersome. Utility Model Content
[0003] The purpose of this utility model is to provide a lumbar support component and a seat, which can automatically wrap around and release the user's waist, thereby improving the ease of use of the lumbar support component.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] The lumbar support assembly includes a mounting base, a main lumbar support, a secondary lumbar support, and a linkage mechanism;
[0006] The main lumbar support is placed on the front side of the mounting base and is movably engaged with the mounting base so that the main lumbar support can move relative to the mounting base in the front-back direction. An elastic element is provided between the mounting base and the main lumbar support, which is used to apply forward elastic stress to the main lumbar support.
[0007] The secondary lumbar support is placed on the side of the main lumbar support and pivotally connected to the mounting base, so that the secondary lumbar support can rotate relative to the mounting base about a vertically extending first axis;
[0008] The linkage mechanism is installed between the main lumbar support and the secondary lumbar support, and is used to drive the secondary lumbar support to swing inward around the first axis when the main lumbar support moves backward relative to the mounting seat, and to drive the secondary lumbar support to swing outward around the first axis when the main lumbar support moves forward relative to the mounting seat.
[0009] Preferably, the linkage mechanism includes a swing rod, a first link, and a second link. One end of the swing rod is hinged to the mounting base, and the other end is hinged to the middle of the first link. One end of the first link is hinged to the main lumbar support, and the other end is hinged to one end of the second link. The other end of the second link is hinged to the auxiliary lumbar support so that the auxiliary lumbar support can rotate relative to the second link about a second axis. The second axis is parallel to the first axis and offset from it.
[0010] Preferably, a connecting arm extending to the outside of the secondary lumbar support is fixedly connected to the secondary lumbar support. The end of the connecting arm near the secondary lumbar support is pivotally connected to a rotatable seat on the mounting base via a pivot. The first axis is the central axis of the pivot. The other end of the second link is hinged to the end of the connecting arm away from the secondary lumbar support so that the connecting arm can rotate relative to the second link around the second axis.
[0011] Preferably, a connecting seat is provided on the secondary lumbar support, and a connecting plate is provided on the connecting seat to abut against the secondary lumbar support. The connecting plate and the secondary lumbar support are fixed together by bolts, and the connecting arm is integrally formed on the connecting seat.
[0012] Preferably, the mounting base is provided with a limiting groove, and one end of the swing rod is placed in the limiting groove so that the angle range of the swing rod relative to the mounting base is limited by the two side walls of the limiting groove.
[0013] Preferably, a first connecting block is detachably fixed on the mounting base, one end of the swing rod is hinged to the first connecting block, and a limiting groove is provided on the first connecting block.
[0014] Preferably, a second connecting block is detachably fixed on the main lumbar support, and one end of the first connecting rod is hinged to the second connecting block.
[0015] Preferably, a guide mechanism is provided between the mounting base and the main lumbar support. The guide mechanism includes a guide post and a guide sleeve that is slidably sleeved on the outside of the guide post. Both the guide post and the guide sleeve extend in the front-back direction. The guide post is connected to one of the mounting base and the main lumbar support, and the guide sleeve is connected to the other of the mounting base and the main lumbar support.
[0016] Preferably, a receiving groove is formed inside the guide column, and the elastic element is a spring. The spring is placed in the receiving groove, and the two ends of the spring abut against the mounting base and the main waist support, respectively.
[0017] Seat, including the aforementioned lumbar support assembly.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0019] In this invention, the user's waist applies backward pressure to the main lumbar support, causing it to move backward towards the mounting base. A linkage mechanism linked to the main lumbar support drives the secondary lumbar support to swing inward. The secondary lumbar support, together with the main lumbar support, wraps around the user's waist, improving seat comfort. When the user stands up, the waist no longer applies pressure to the main lumbar support. An elastic element pushes the main lumbar support forward, and the linkage mechanism drives the secondary lumbar support to swing outward. At this time, the secondary lumbar support releases from the side of the user's waist, allowing the lumbar support assembly to unfold, facilitating the user's departure from the seat. Thus, the lumbar support assembly can automatically wrap around and release the user's waist without requiring manual adjustment of the secondary lumbar support, improving the convenience of using the lumbar support assembly. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of this utility model;
[0021] Figure 2 This is a cross-sectional view of the present invention;
[0022] Figure 3 This is a schematic diagram of the usage state of this utility model;
[0023] Figure 4 for Figure 2 A magnified view of point A in the middle.
[0024] Wherein: 10, mounting base; 11, first connecting block; 110, limiting groove; 111, side wall; 112, side wall; 12, guide post; 121, receiving groove; 13, rotating seat; 20, main waist support; 21, second connecting block; 22, guide sleeve; 30, auxiliary waist support; 31, connecting seat; 311, connecting plate; 312, connecting arm; 40, linkage mechanism; 41, swing rod; 42, first connecting rod; 43, second connecting rod; 50, spring. Detailed Implementation
[0025] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0026] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.
[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0028] like Figure 1 , 2 As shown in Figures 3 and 4, a lumbar support assembly of this utility model includes a mounting base 10, a main lumbar support 20, two auxiliary lumbar supports 30, and two linkage mechanisms 40. The main lumbar support 20 is located on the front side of the mounting base 10, and the two auxiliary lumbar supports 30 are located on both sides of the main lumbar support 20. The main lumbar support 20 supports the middle position of the user's waist, and the two auxiliary lumbar supports 30 provide support on both sides of the user's waist. The main lumbar support 20 is movably engaged with the mounting base 10, allowing the main lumbar support 20 to move relative to the mounting base 10 in the front-back direction. A spring 50 is provided between the mounting base 10 and the main lumbar support 20, and the spring 50 applies a forward elastic stress to the main lumbar support 20. The two auxiliary lumbar supports 30 are pivotally connected to both sides of the mounting base 10, allowing the auxiliary lumbar supports 30 to rotate relative to the mounting base 10 about a vertically extending first axis O1.
[0029] In other words, when the secondary lumbar support 30 rotates around the first axis O1, it can change the angle between the secondary lumbar support 30 and the main lumbar support 20. Specifically, when the secondary lumbar support 30 swings inward around the first axis O1, the angle between the secondary lumbar support 30 and the main lumbar support 20 decreases; conversely, when the secondary lumbar support 30 swings outward around the first axis O1, the angle between the secondary lumbar support 30 and the main lumbar support 20 increases. The linkage mechanism 40 is installed between the main lumbar support 20 and the secondary lumbar support 30, and is used to drive the secondary lumbar support 30 to swing inward around the first axis O1 when the main lumbar support 20 moves backward relative to the mounting base 10, and to drive the secondary lumbar support 30 to swing outward around the first axis O1 when the main lumbar support 20 moves forward relative to the mounting base 10.
[0030] It should be noted that two or more springs 50 can be installed between the main lumbar support 20 and the mounting base 10. The two or more springs 50 can provide a relatively stable elastic stress to the main lumbar support 20. The springs 50 can be replaced by other elastic elements such as spring sheets or elastic rubber blocks.
[0031] When in use, the user's waist applies backward pressure to the main lumbar support 20, causing it to overcome the elastic stress of the elastic element and move backward toward the mounting base 10. Simultaneously, the linkage mechanism 40, linked to the main lumbar support 20, drives the secondary lumbar support 30 to swing inward. After swinging inward at a certain angle, the secondary lumbar support 30 supports the side of the user's waist. Thus, the two secondary lumbar supports 30, in conjunction with the main lumbar support 20, wrap around the user's waist, improving seat comfort. When the user stands up, the waist no longer applies pressure to the main lumbar support 20. The elastic element pushes the main lumbar support 20 forward, and the linkage mechanism 40 drives the secondary lumbar support 30 to swing outward. At this time, the secondary lumbar support 30 releases from the side of the user's waist, allowing the lumbar support assembly to unfold, facilitating the user's departure from the seat. Therefore, the lumbar support assembly of this invention can automatically wrap around and release the user's waist without requiring manual adjustment of the secondary lumbar support 30, improving the convenience of use.
[0032] In a preferred embodiment, the linkage mechanism 40 includes a swing rod 41, a first link 42, and a second link 43. One end of the swing rod 41 is hinged to the mounting base 10, and the other end is hinged to the middle of the first link 42. One end of the first link 42 is hinged to the main lumbar support 20, and the other end is hinged to one end of the second link 43. The other end of the second link 43 is hinged to the auxiliary lumbar support 30, so that the auxiliary lumbar support 30 can rotate relative to the second link 43 about a second axis O2. The second axis O2 is parallel to the first axis O1 and offset from each other by a certain distance.
[0033] See Figure 2 , 3 As shown, when the user's waist applies backward pressure to the main lumbar support 20, the main lumbar support 20 moves backward relative to the mounting base 10, the angle between the swing rod 41 and the first connecting rod 42 decreases, and the first connecting rod 42 pushes the second connecting rod 43 outward. As the second connecting rod 43 moves outward, it pushes the secondary lumbar support 30 to swing inward around the first axis O1. When the user stands up, the main lumbar support 20 moves forward relative to the mounting base 10 under the elastic stress of the spring 50, the angle between the swing rod 41 and the first connecting rod 42 increases, and the first connecting rod 42 pulls the second connecting rod 43 inward, thereby causing the second connecting rod 43 to move inward and pull the secondary lumbar support 30 to swing outward around the first axis O1.
[0034] A connecting seat 31 is provided on the secondary lumbar support 30. A connecting arm 312 integrally formed with the connecting seat 31 is provided on the inner side of the connecting seat 31. A connecting plate 311 is provided on the outer side of the connecting seat 31. The connecting plate 311 abuts against the secondary lumbar support 30 and is fixedly connected to the secondary lumbar support 30 by bolts. The connecting arm 312 extends inward and then extends to the outside of the secondary lumbar support 30. The middle part of the connecting seat 31 is pivotally connected to the rotating seat 13 provided on the mounting base 10 through a rotating shaft. The central axis of the rotating shaft is the aforementioned first shaft. Line O1, the pivot is located at the end of the connecting arm 312 near the auxiliary lumbar support 30, the end of the connecting arm 312 away from the auxiliary lumbar support 30 is hinged to the other end of the second link 43, the axis of relative rotation between the connecting arm 312 and the other end of the second link 43 is the aforementioned second axis O2, by the length of the connecting arm 312 itself, the first axis O1 and the second axis O2 are set at a certain distance apart, when the connecting arm 312 is pulled or pushed by the second link 43, the connecting arm 312 can rotate around the first axis O1, thereby driving the auxiliary lumbar support 30 to swing.
[0035] In another preferred embodiment, a limiting groove 110 is provided on the front side of the mounting base 10. The limiting groove 110 includes opposing sidewalls 111 and 112. The swing rod 41 is placed in the limiting groove 110. The sidewalls 111 and 112 of the limiting groove 110 limit the angular range of the swing rod 41 relative to the mounting base 10. Specifically, when the swing rod 41 swings inward, the sidewall 111 abuts against the swing rod 41; when the swing rod 41 swings outward, the sidewall 112 abuts against the swing rod 41. By limiting the swing rod 41 through the limiting groove 110, the rotation range of the swing rod 41 is limited, thereby allowing the secondary lumbar support 30 to swing relative to the mounting base 10 within a corresponding angular range, avoiding excessive rotation of the secondary lumbar support 30 and interference with the main lumbar support 20.
[0036] A first connecting block 11 is detachably fixed to the front side of the mounting base 10. The fixed connection between the first connecting block 11 and the mounting base 10 can be achieved by bolt connection. The aforementioned limiting groove 110 is provided on the first connecting block 11. Meanwhile, one end of the swing rod 41 is hinged to the first connecting block 11. Thus, during assembly, the first connecting block 11 can be assembled with the linkage mechanism 40 first, and then the first connecting block 11 can be fixedly connected to the mounting base 10.
[0037] A second connecting block 21 is detachably fixed on the main lumbar support 20. The second connecting block 21 can be connected to the main lumbar support 20 by bolts. One end of the first connecting rod 42 is hinged to the second connecting block 21. During assembly, the second connecting block 21 can be assembled with the connecting rod mechanism 40 first, and then the second connecting block 21 can be fixedly connected to the main lumbar support 20.
[0038] A guide mechanism is provided between the mounting base 10 and the main lumbar support 20. The guide mechanism includes a guide post 12 and a guide sleeve 22. The guide sleeve 22 is slidably fitted on the guide post 12. Both the guide post 12 and the guide sleeve 22 extend in the front-back direction. Through their relative sliding structure, the main lumbar support 20 can only move relative to the mounting base 10 in the front-back direction. The guide post 12 is fixed to the front side of the mounting base 10 and extends forward, while the guide sleeve 22 is fixed to the main lumbar support 20 and extends backward. In other embodiments, the guide post 12 can be fixed to the main lumbar support 20, and the guide sleeve 22 can be fixed to the mounting base 10. A receiving groove 121 is formed inside the guide post 12. A spring 50 is placed in the receiving groove 121, and the two ends of the spring 50 abut against the mounting base 10 and the main lumbar support 20, respectively.
[0039] The seat of this utility model includes the lumbar support component described above. The other structures of the seat are the same as those in the prior art and will not be described in detail here.
[0040] Finally, it should be noted that the above embodiments are only optional embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A lumbar support assembly, characterized in that, Includes mounting base, main lumbar support, secondary lumbar support, and linkage mechanism; The main lumbar support is placed on the front side of the mounting base and is movably engaged with the mounting base so that the main lumbar support can move relative to the mounting base in the front-back direction. An elastic element is provided between the mounting base and the main lumbar support, which is used to apply forward elastic stress to the main lumbar support. The secondary lumbar support is placed on the side of the main lumbar support and pivotally connected to the mounting base, so that the secondary lumbar support can rotate relative to the mounting base about a vertically extending first axis; The linkage mechanism is installed between the main lumbar support and the secondary lumbar support, and is used to drive the secondary lumbar support to swing inward around the first axis when the main lumbar support moves backward relative to the mounting seat, and to drive the secondary lumbar support to swing outward around the first axis when the main lumbar support moves forward relative to the mounting seat.
2. The lumbar support assembly as described in claim 1, characterized in that, The linkage mechanism includes a swing rod, a first link, and a second link. One end of the swing rod is hinged to the mounting base, and the other end is hinged to the middle of the first link. One end of the first link is hinged to the main lumbar support, and the other end is hinged to one end of the second link. The other end of the second link is hinged to the auxiliary lumbar support so that the auxiliary lumbar support can rotate relative to the second link about a second axis. The second axis is parallel to the first axis and offset from it.
3. The lumbar support assembly as described in claim 2, characterized in that, A connecting arm extending to the outside of the secondary lumbar support is fixedly connected to the secondary lumbar support. The end of the connecting arm near the secondary lumbar support is pivotally connected to the rotatable seat on the mounting base via a pivot. The first axis is the central axis of the pivot. The other end of the second link is hinged to the end of the connecting arm away from the secondary lumbar support so that the connecting arm can rotate relative to the second link around the second axis.
4. The lumbar support assembly as described in claim 3, characterized in that, A connecting seat is provided on the secondary lumbar support, and a connecting plate is provided on the connecting seat to abut against the secondary lumbar support. The connecting plate and the secondary lumbar support are fixed together by bolts, and the connecting arm is integrally formed on the connecting seat.
5. The lumbar support assembly as described in claim 2, characterized in that, The mounting base is provided with a limiting groove, and one end of the swing rod is placed in the limiting groove so that the angle range of the swing rod relative to the mounting base is limited by the two side walls of the limiting groove.
6. The lumbar support assembly as described in claim 5, characterized in that, The mounting base is detachably fixed with a first connecting block, one end of the swing rod is hinged to the first connecting block, and a limiting groove is provided on the first connecting block.
7. The lumbar support assembly as described in claim 2, characterized in that, A second connecting block is detachably fixed to the main lumbar support, and one end of the first connecting rod is hinged to the second connecting block.
8. The lumbar support assembly as claimed in claim 1, characterized in that, A guide mechanism is provided between the mounting base and the main lumbar support. The guide mechanism includes a guide post and a guide sleeve that slides outside the guide post. Both the guide post and the guide sleeve extend in the front-back direction. The guide post is connected to one of the mounting base and the main lumbar support, and the guide sleeve is connected to the other of the mounting base and the main lumbar support.
9. The lumbar support assembly as described in claim 8, characterized in that, The guide post has a receiving groove inside, and the elastic element is a spring. The spring is placed in the receiving groove, and the two ends of the spring abut against the mounting base and the main waist support, respectively.
10. A seat, characterized in that, Includes the lumbar support assembly as described in any one of claims 1-9.