Self-adaptive waist support assembly and seat

Abstract

The utility model discloses a self-adaptive waist support assembly and a seat. The self-adaptive waist support assembly comprises a mounting seat, a main waist support and two auxiliary waist supports, the two auxiliary waist supports are located on the two sides of the main waist support respectively, and the two auxiliary waist supports are pivoted to the two sides of the mounting base respectively so that the auxiliary waist supports can swing inwards and outwards relative to the mounting base around a first axis extending in the vertical direction; the main waist support is located on the front side of the mounting base and comprises an elastic supporting piece, the elastic supporting piece comprises a deformation part located in the middle and two connecting parts located on the two sides of the deformation part respectively, and the two connecting parts are pivoted to the two auxiliary waist supports respectively so that the auxiliary waist supports can rotate around the second axis relative to the connecting parts; the second axis and the first axis are parallel and staggered. The comfort of the seat is improved, manual adjustment is not needed in the using process, and the using convenience of the seat is improved.

Description

Technical Field

[0001] This utility model relates to the field of seat technology, specifically to an adaptive lumbar support component and a seat. Background Technology

[0002] To prevent lumbar fatigue caused by unsupported lower back, existing office chairs and gaming chairs are typically equipped with lumbar support components. These components provide support to the user's lower back, improving chair comfort. In some chairs, to provide better lumbar support, the lumbar support component usually includes a main lumbar support and two secondary lumbar supports located on either side of the main lumbar support. The secondary lumbar supports are connected to the sides of the main lumbar support and are designed to be adjustable by swinging inwards and outwards relative to the main lumbar support. In use, the main lumbar support supports the middle of the user's lower back, while the two secondary lumbar supports support the sides of the lower back. By wrapping the user's lower back with the lumbar support component, the chair's comfort is enhanced. However, in actual use, users need to manually adjust the secondary lumbar supports, often requiring multiple adjustments to achieve a suitable angle, which is inconvenient. Utility Model Content

[0003] The purpose of this invention is to provide an adaptive lumbar support component and a seat that can adaptively wrap around the user's waist without the need for manual adjustment.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The adaptive lumbar support assembly includes a mounting base, a main lumbar support, and two secondary lumbar supports;

[0006] Two secondary lumbar supports are located on both sides of the main lumbar support, and the two secondary lumbar supports are pivotally connected to both sides of the mounting base so that the secondary lumbar supports can swing inward and outward relative to the mounting base about the vertically extending first axis.

[0007] The main lumbar support is located on the front side of the mounting base. The main lumbar support includes an elastic support member, which includes a deformation part located in the middle and two connecting parts located on both sides of the deformation part. The two connecting parts are pivotally connected to two secondary lumbar supports so that the secondary lumbar supports can rotate relative to the connecting parts around the second axis. On the same secondary lumbar support, the second axis is parallel to the first axis and is offset from each other.

[0008] Preferably, the elastic support is plate-shaped, and the main lumbar support also includes a flexible support block, which covers the front side of the elastic support and is bonded to the elastic support.

[0009] Preferably, each of the two connecting parts of the elastic support is provided with a connecting block, the connecting block is detachably fixed to the connecting part, and the connecting block is pivotally connected to the secondary lumbar support so that the secondary lumbar support can rotate relative to the connecting block about the second axis.

[0010] Preferably, the auxiliary waist support is provided with a first shaft hole and a second shaft hole that is offset from the first shaft hole; the mounting base is provided with a rotating base, and a first rotating shaft that is pivotally connected to the rotating base passes through the first shaft hole, with the first axis being the central axis of the first rotating shaft; the connecting block is provided with two connecting ears, and a second rotating shaft passes through the second shaft hole, with both ends of the second rotating shaft connected to the two connecting ears respectively, with the second axis being the central axis of the second rotating shaft.

[0011] Preferably, a limiting surface is formed on the outer side of the rotating seat, and a stop surface is provided on the auxiliary waist support. The stop surface and the limiting surface cooperate to limit the maximum angle of the auxiliary waist support swinging outward relative to the mounting seat around the first axis.

[0012] Preferably, the lumbar support is provided with a locking block that is fixedly engaged with the lumbar support, and the mounting base is provided with a locking member that engages with the locking block. The locking member can move relative to the mounting base between a first position and a second position. When the locking member is in the first position, the locking member is disengaged from the locking block, and when the locking member is in the second position, the locking member is engaged with the locking block.

[0013] Preferably, the secondary waist support is provided with a connecting arm extending away from the first axis. The end of the connecting arm away from the first axis forms a locking block. The locking block is provided with a plurality of first protrusions, and the locking member is provided with a plurality of second protrusions. When the locking member is in the second position, the plurality of first protrusions and the plurality of second protrusions engage with each other.

[0014] Preferably, the mounting base is provided with a mounting groove extending from its rear side to the front side of the mounting base. The locking member is embedded in the mounting groove and can move relative to the mounting base along the extension direction of the mounting groove. A handle is pivotally connected to the mounting base. The handle is provided with a boss located on the rear side of the locking member. The handle is used to drive the boss to rotate so that the boss pushes the locking member forward and keeps the locking member in the second position.

[0015] Preferably, the front side of the mounting base is an arc shape with the middle part concave to the rear.

[0016] The seat, including the aforementioned adaptive lumbar support component.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] In this invention, the backward pressure applied by the user's waist to the main lumbar support causes the elastic support member on the main lumbar support to deform backward. The connecting parts on both sides of the elastic support member pull the two auxiliary lumbar supports to swing inward around the first axis. Ultimately, the main lumbar support and the two auxiliary lumbar supports automatically wrap around the user's waist. The support force provided by the main lumbar support and the auxiliary lumbar supports to the user's waist eventually balances with the backward pressure of the user's waist on the main lumbar support. This allows the angle of the auxiliary lumbar supports swinging inward to adaptively fit against the side of the user's waist. In one go, the main lumbar support and the auxiliary lumbar supports move to the optimal position to support the user's waist, improving the comfort of the seat. During use, no manual adjustment is required, improving the convenience of using the seat. Attached Figure Description

[0019] Figure 1 This is an installation diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the usage state of this utility model;

[0022] Figure 4 for Figure 2 AA section view;

[0023] Figure 5 for Figure 1 A schematic diagram of the central locking component.

[0024] Wherein: 10, mounting base; 101, limiting surface; 11, rotating base; 12, mounting groove; 20, main waist support; 21, elastic support component; 211, deformable part; 212, connecting part; 22, flexible support block; 23, connecting block; 231, connecting ear; 30, secondary waist support; 301, stop surface; 31, connecting arm; 311, first shaft hole; 312, second shaft hole; 32, locking block; 321, first protruding tooth; 40, locking component; 41, second protruding tooth; 50, handle; 51, boss. 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, 4, and 5, this utility model provides an adaptive lumbar support assembly, which includes a mounting base 10, a main lumbar support 20, and two auxiliary lumbar supports 30. The two auxiliary lumbar supports 30 are located on both sides of the main lumbar support 20, and are pivotally connected to both sides of the mounting base 10, so that the auxiliary lumbar supports 30 can swing inward and outward relative to the mounting base 10 around the first axis O1, thereby allowing the auxiliary lumbar supports 30 to swing inward and outward relative to the main lumbar support 20. The main lumbar support 20 is located on the front side of the mounting base 10. It includes an elastic support member 21, which is the main body of the main lumbar support 20. When it is squeezed by an external force, it can deform to a certain extent. For example, when the main lumbar support 20 is squeezed backward by the user's waist, the middle part of the elastic support member 21 can deform backward. When the user leaves the seat, his waist is separated from the main lumbar support 20, and the middle part of the elastic support member 21 can rebound to the initial state. Specifically, the elastic support member 21 includes a deformation part 211 located in the middle and two connecting parts 212 located on both sides of the deformation part 211. The elastic support member 21 extends at least between the two secondary lumbar supports 30 so that the two connecting parts 212 of the elastic support member 21 can be pivotally connected to the two secondary lumbar supports 30 respectively, thereby allowing the secondary lumbar supports 30 to rotate about the second axis O2 relative to the connecting parts 212 of the elastic support member 21. On the same secondary lumbar support 30, the second axis O2 is parallel to the first axis O1 and is offset from each other by a certain distance.

[0029] See Figure 2As shown, when the seat is not in use, the elastic support 21 is not subjected to the backward pressure of the user's waist or other external forces, and the elastic support 21 remains in its initial state. At this time, the two secondary lumbar supports 30 are in the state of being extended outward to their maximum angle; see also Figure 3 As shown, when the seat is in use, the user's waist presses the deformable portion 211 of the elastic support 21 backward, causing the deformable portion 211 of the elastic support 21 to bend backward. When the elastic support 21 deforms backward, its two connecting portions 212 pull inward, which in turn pulls the secondary lumbar support 30, causing the secondary lumbar support 30 to swing inward around the first axis O1. Finally, the main lumbar support 20 supports the middle of the user's waist, and the two secondary lumbar supports 30 support the sides of the user's waist, thus wrapping the user's waist with the lumbar support assembly. When the user leaves the seat, the elastic support 21 returns to its initial state, and the two connecting portions 212 push the secondary lumbar support 30 to swing outward around the first axis O1. Figure 2 The state shown is as follows. In this utility model, the backward pressure applied by the user's waist to the main lumbar support 20 causes the elastic support member 21 on the main lumbar support 20 to deform backward. The connecting parts 212 on both sides of the elastic support member 21 pull the two auxiliary lumbar supports 30 to swing inward around the first axis O1. Finally, the main lumbar support 20 and the two auxiliary lumbar supports 30 automatically wrap around the user's waist. The support force provided by the main lumbar support 20 and the auxiliary lumbar supports 30 to the user's waist eventually balances with the backward pressure of the user's waist on the main lumbar support 20. This allows the angle of the auxiliary lumbar supports 30 swinging inward to adaptively fit against the side of the user's waist. In one go, the main lumbar support 20 and the auxiliary lumbar supports 30 move to the optimal position to support the user's waist, improving the comfort of the seat. During use, no manual adjustment is required, improving the convenience of using the seat.

[0030] In a preferred embodiment, the elastic support member 21 may be plate-shaped, made of a deformable material, so that when the elastic support member 21 is compressed backward, the middle deformable portion 211 can deform sufficiently backward to drive the two connecting portions 212 to move inward. The main lumbar support 20 also includes a flexible support block 22, which covers the front side of the elastic support member 21. The flexible support block 22 provides support for the middle position of the user's waist to improve comfort and can adapt to the deformation of the elastic support member 21. The flexible support block 22 may be made of molded cotton, and after covering the front side of the elastic support member 21, it is glued to the elastic support member 21. In other embodiments, the flexible support block 22 may also be made by wrapping flexible filling material with cotton cloth, leather, or other materials.

[0031] To facilitate the pivotal connection between the elastic support 21 and the secondary lumbar support 30, a connecting block 23 is fixed to each of the two connecting portions 212 of the elastic support 21. The connecting block 23 is detachably fixed to the connecting portion 212 and pivotally connected to the secondary lumbar support 30, allowing the secondary lumbar support 30 to rotate relative to the connecting block 23 around the second axis O2. The secondary lumbar support 30 is provided with a first shaft hole 311 and a second shaft hole 312, which are offset from each other. A rotating seat 11 is provided on the mounting base 10. A first rotating shaft that pivotally engages with the rotating seat 11 passes through the first shaft hole 311. The first axis O1 is the central axis of the first rotating shaft. The connecting block 23 is provided with two vertically opposed connecting ears 231. A second rotating shaft passes through the second shaft hole 312, and the two ends of the second rotating shaft are respectively connected to the two connecting ears 231. The second axis O2 is the central axis of the second rotating shaft.

[0032] A limiting surface 101 is formed on the outer side of the swivel seat 11, and a stop surface 301 is provided on the secondary lumbar support 30. The stop surface 301 cooperates with the limiting surface 101, and when the two are in contact, they limit the secondary lumbar support 30 from swinging outward around the first axis O1. That is, the stop surface 301 and the limiting surface 101 cooperate to limit the maximum angle of the secondary lumbar support 30 from swinging outward relative to the mounting base 10 around the first axis O1. Figure 2 In the state shown, if the secondary lumbar support 30 is impacted backward, the secondary lumbar support 30 is limited by the limiting surface 101 and the stop surface 301, thereby preventing the elastic support member 21 on the main lumbar support 20 from being pulled due to the backward swing of the secondary lumbar support 30, and thus protecting the elastic support member 21.

[0033] In another preferred embodiment, the lumbar support 30 is provided with a locking block 32 that is fixedly engaged with the lumbar support 30, and the mounting base 10 is provided with a locking member 40 that engages with the locking block 32. The locking member 40 can move relative to the mounting base 10 between a first position and a second position. When the locking member 40 is in the first position, the locking member 40 is disengaged from the locking block 32. When the locking member 40 is in the second position, the locking member 40 and the locking block 32 are engaged with each other, thereby locking the lumbar support 30 through the locking member 40, so that the lumbar support 30 can remain relatively fixed to the mounting base 10. A connecting arm 31 extending away from the first axis O1 is provided on the secondary lumbar support 30. The end of the connecting arm 31 away from the first axis O1 forms a locking block 32. The locking block 32 is provided with a plurality of first protrusions 321, and the locking member 40 is provided with a plurality of second protrusions 41. When the locking member 40 is in the second position, the plurality of first protrusions 321 and the plurality of second protrusions 41 engage with each other, so that the locking member 40 and the locking block 32 remain relatively fixed, thereby keeping the secondary lumbar support 30 and the mounting base 10 relatively fixed. The mounting base 10 has a mounting groove 12 extending forward from its rear side to the front side of the mounting base 10. The locking member 40 is embedded in the mounting groove 12, allowing the locking member 40 to move relative to the mounting base 10 along the extension direction of the mounting groove 12. A handle 50 is pivotally connected to the mounting base 10. The locking member 40 is controlled by the handle 50, so that the locking member 40 can be held in the second position or released, allowing the locking member 40 to move to the first position. Specifically, the handle 50 has a boss 51 located on the rear side of the locking member 40. When the handle 50 is rotated to the predetermined position, the boss 51 rotates with the handle 50, pressing the locking member 40 forward, so that the locking member 40 is held in the second position, and then the locking member 40 engages with the locking block 32. When it is necessary to release the locking member 40, the handle 50 is rotated in the opposite direction, so that the boss 51 disengages from the locking member 40, and the locking member 40 can move backward in the mounting groove 12 and disengage from the locking block 32.

[0034] The front side of the mounting base 10 is an arc shape with the middle part concave to the rear. When the main lumbar support 20 is squeezed backward, the middle part of the elastic support member 21 on the main lumbar support 20 will not interfere with the mounting base 10 when it deforms backward, making the structure of the entire lumbar support assembly more compact.

[0035] The seat of this utility model includes the aforementioned adaptive lumbar support assembly. 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 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. An adaptive lumbar support assembly, characterized in that, Includes mounting base, main lumbar support, and two auxiliary lumbar supports; Two secondary lumbar supports are located on both sides of the main lumbar support, and the two secondary lumbar supports are pivotally connected to both sides of the mounting base so that the secondary lumbar supports can swing inward and outward relative to the mounting base about the vertically extending first axis. The main lumbar support is located on the front side of the mounting base. The main lumbar support includes an elastic support member, which includes a deformation part located in the middle and two connecting parts located on both sides of the deformation part. The two connecting parts are pivotally connected to two secondary lumbar supports so that the secondary lumbar supports can rotate relative to the connecting parts around the second axis. On the same secondary lumbar support, the second axis is parallel to the first axis and is offset from each other.

2. The adaptive lumbar support assembly as described in claim 1, characterized in that, The elastic support is plate-shaped, and the main lumbar support also includes a flexible support block, which covers the front side of the elastic support and is connected to the elastic support by adhesive.

3. The adaptive lumbar support assembly as described in claim 1, characterized in that, Each of the two connecting parts of the elastic support is provided with a connecting block. The connecting block is detachably fixed to the connecting part and is pivotally connected to the secondary lumbar support so that the secondary lumbar support can rotate relative to the connecting block around the second axis.

4. The adaptive lumbar support assembly as described in claim 3, characterized in that, The auxiliary waist support is provided with a first shaft hole and a second shaft hole that is offset from the first shaft hole; the mounting base is provided with a swivel, and a first rotating shaft that is pivotally connected to the swivel is passed through the first shaft hole, and the first axis is the central axis of the first rotating shaft; the connecting block is provided with two connecting ears, and a second rotating shaft is passed through the second shaft hole, with the two ends of the second rotating shaft connected to the two connecting ears respectively, and the second axis is the central axis of the second rotating shaft.

5. The adaptive lumbar support assembly as described in claim 4, characterized in that, A limiting surface is formed on the outer side of the rotating seat, and a stop surface is provided on the auxiliary waist support. The stop surface and the limiting surface cooperate to limit the maximum angle of the auxiliary waist support swinging outward relative to the mounting seat around the first axis.

6. The adaptive lumbar support assembly as described in claim 1, characterized in that, The lumbar support is provided with a locking block that is fixedly engaged with the lumbar support. The mounting base is provided with a locking member that engages with the locking block. The locking member can move relative to the mounting base between a first position and a second position. When the locking member is in the first position, the locking member is disengaged from the locking block. When the locking member is in the second position, the locking member is engaged with the locking block.

7. The adaptive lumbar support assembly as described in claim 6, characterized in that, The secondary lumbar support is provided with a connecting arm extending away from the first axis. The end of the connecting arm away from the first axis forms a locking block. The locking block is provided with multiple first protrusions, and the locking member is provided with multiple second protrusions. When the locking member is in the second position, the multiple first protrusions and the multiple second protrusions engage with each other.

8. The adaptive lumbar support assembly as described in claim 7, characterized in that, The mounting base has a mounting groove extending from its rear side to the front side of the mounting base. The locking element is embedded in the mounting groove and can move relative to the mounting base along the extension direction of the mounting groove. A handle is pivotally connected to the mounting base. The handle has a boss located on the rear side of the locking element. The handle is used to drive the boss to rotate so that the boss pushes the locking element forward and keeps the locking element in the second position.

9. The adaptive lumbar support assembly as described in claim 1, characterized in that, The front side of the mounting base is an arc shape that is concave in the middle and backward.

10. A seat, characterized in that, Includes the adaptive lumbar support assembly as described in any one of claims 1-9.

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