Lumbar support lifting device and seat
By designing a lumbar support lifting device, the height of the lumbar support can be flexibly adjusted using adjustment components and positioning structures, solving the problem that existing seat lumbar supports cannot be adjusted, and improving the comfort and usability of the seat.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN MEISIHE FURNITURE CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-07-03
AI Technical Summary
Existing lumbar support pillows cannot be height-adjusted according to the user's body shape or needs, resulting in poor flexibility and comfort.
Design a lumbar pillow lifting device to achieve lumbar pillow height adjustment through adjusting components and positioning structure, including a combination of chair back body, lumbar pillow bracket, slide groove and slot, and use elastic element and snap-fit part to fix the lumbar pillow bracket.
The lumbar support height is flexibly adjustable, improving the comfort and flexibility of the seat and meeting the needs of different users.
Smart Images
Figure CN224440780U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seating technology, and in particular to a lumbar support lifting device and a seat. Background Technology
[0002] Most chairs come with lumbar support, which helps support the lower back, reduce pressure, and improve comfort. However, existing lumbar support pillows are usually fixed to the back of the chair and cannot be adjusted in height to suit the user's body shape or needs. This lack of flexibility fails to meet the needs of different users and significantly reduces the overall comfort of the chair. Utility Model Content
[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a lumbar pillow lifting device that allows for convenient adjustment of the lumbar pillow's height, making it convenient for users.
[0004] A lumbar support lifting device according to an embodiment of the present invention includes: a chair back body having an installation channel arranged in a vertical direction, and an installation hole communicating with the installation channel on the front side wall of the chair back body; a lumbar support bracket movably inserted into the installation channel in a vertical direction, the lumbar support bracket having a sliding groove arranged in a vertical direction; a positioning structure including a plurality of slots arranged in a vertical direction on the inner wall of one side of the sliding groove; and an adjusting component movably installed in the installation hole and extending into the sliding groove, the adjusting component having a sliding part and a locking part, the locking part being located behind the sliding part, the width of the sliding part being smaller than the width of the sliding part. The width of the groove, the width of the snap-fit part is greater than the width of the slide groove and can be embedded in either of the slots, and an elastic element is also provided between the adjustment component and the backrest body; wherein, the adjustment component can move backward along the axial direction of the mounting hole and cause the sliding part to be embedded in the slide groove, and the lumbar support can move up and down relative to the backrest body; or the elastic element can push the adjustment component forward along the axial direction of the mounting hole and cause the snap-fit part to snap into one of the slots, the snap-fit part can abut against the inner wall of the corresponding slot and prevent the lumbar support from moving up and down relative to the backrest body.
[0005] The lumbar pillow lifting device according to the embodiment of this utility model has at least the following beneficial effects:
[0006] In the lumbar pillow lifting device of this embodiment, the height of the lumbar pillow can be adjusted by pressing the adjustment component. When the adjustment component is pressed backward, the elastic element is compressed and deformed, and the adjustment component can move backward along the axial direction of the mounting hole, causing the sliding part to embed backward into the slide groove. Since the width of the sliding part is smaller than the width of the slide groove, the sliding part can move relative to the lumbar pillow bracket along the length direction of the slide groove, that is, the lumbar pillow bracket can move up and down relative to the chair back body, thereby adjusting the height of the lumbar pillow bracket. When the lumbar pillow bracket is adjusted to a suitable height, the adjustment component is released, the elastic element returns to its original deformation and can push the adjustment component forward along the axial direction of the mounting hole, causing the locking part to engage in the corresponding height slot. Since the width of the locking part is larger than the width of the slide groove and can be embedded in the slot, the locking part can abut against the inner wall of the slot upward or downward, thereby preventing the lumbar pillow bracket from moving up and down relative to the chair back body, thus fixing the lumbar pillow bracket at a suitable height. The structure is simple and easy to operate, making it convenient for users.
[0007] According to some embodiments of the present invention, the positioning structure is in two sets, and the two sets of positioning structures are correspondingly arranged on the inner walls of opposite sides of the slide groove. Each slot of one set of positioning structures corresponds one-to-one with each slot of the other set of positioning structures and is arranged opposite to each other. The snap-fit part can snap into the two opposite slots.
[0008] According to some embodiments of the present invention, the cross-section of the snap-fit part is circular, and the inner wall of the snap-fit groove is an arc-shaped surface that matches the outer peripheral wall of the snap-fit part.
[0009] According to some embodiments of the present invention, the adjustment component includes a button and a positioning block. The positioning block is inserted into the mounting hole. The snap-fit part and the sliding part are both disposed on the positioning block. The button is installed at the front end of the positioning block. The elastic element is disposed between the button and the backrest body.
[0010] According to some embodiments of the present invention, the cross-sectional shape of the mounting hole is the same as the cross-sectional shape of the sliding part, and in the width direction of the groove, the snap-fit part protrudes outward relative to the sliding part and can abut against the inner periphery of the mounting hole.
[0011] According to some embodiments of the present invention, the front end of the positioning block is provided with a first mounting groove, and the button is provided with a second mounting groove. A fastener extending into the first mounting groove is installed in the second mounting groove. At least one set of positioning components is also provided between the positioning block and the button. The positioning component includes a first positioning part provided on the positioning block and a second positioning part provided on the button. One of the first positioning part and the second positioning part is provided with a positioning groove, and the other is provided with a positioning post adapted to the positioning groove. When the positioning post is embedded in the corresponding positioning groove, the first mounting groove and the second mounting groove are aligned.
[0012] According to some embodiments of this utility model, the lumbar support is provided with an annular groove surrounding the outer periphery of the mounting hole, the button has a connecting post and a pressing part, the second mounting groove is opened in the connecting post, the pressing part is provided at the front end of the connecting post and surrounds the outer periphery of the connecting post, the outer periphery of the pressing part is provided with a rearwardly extending rim, the rim is movably embedded in the annular groove, the elastic member is sleeved on the outer periphery of the connecting post and located between the rim and the connecting post, one end of the elastic member abuts against the chair back body, and the other end abuts against the pressing part.
[0013] According to some embodiments of the present invention, the rear side of the lumbar support is provided with a receiving groove that communicates with the sliding groove. When the adjusting component moves backward along the axial direction of the mounting hole and the sliding part is embedded in the sliding groove, the snap-fit part can be embedded in the receiving groove and move up and down with the sliding part.
[0014] According to some embodiments of the present invention, one of the inner wall of the installation channel and the lumbar support is provided with a guide groove arranged in the vertical direction, and the other is provided with a guide rail adapted to the guide groove. The guide rail is movably installed in the guide groove and can move up and down along the guide groove.
[0015] The seat according to an embodiment of the present invention is provided with a lumbar support lifting device according to any of the above embodiments.
[0016] The seat according to the embodiment of this utility model has at least the following beneficial effects:
[0017] The seat using this utility model embodiment allows for lumbar support height adjustment via pressing the adjustment component. Its simple structure and convenient operation not only make it easy for users to use but also meet the needs of different users, greatly improving the seat's flexibility and comfort.
[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0020] Figure 1 This is a schematic diagram of the lumbar pillow lifting device according to an embodiment of the present utility model;
[0021] Figure 2 This is a cross-sectional schematic diagram of the lumbar pillow lifting device according to an embodiment of the present utility model;
[0022] Figure 3 This is a cross-sectional schematic diagram of the sliding part of the lumbar pillow lifting device embedded in the slide groove according to an embodiment of the present utility model;
[0023] Figure 4 This is another cross-sectional schematic diagram of the sliding part of the lumbar pillow lifting device embedded in the slide groove according to an embodiment of the present utility model;
[0024] Figure 5 This is a cross-sectional schematic diagram of the lumbar pillow lifting device of this utility model with the locking part embedded in the slot;
[0025] Figure 6 This is another cross-sectional schematic diagram of the lumbar pillow lifting device of this utility model being embedded in the slot;
[0026] Figure 7 This is a schematic diagram of the main body of the chair back according to an embodiment of the present utility model;
[0027] Figure 8 This is a cross-sectional schematic diagram of the main body of the chair back according to an embodiment of the present utility model;
[0028] Figure 9 This is a front view of the lumbar pillow bracket according to an embodiment of the present invention;
[0029] Figure 10 This is a schematic diagram of the rear side of the lumbar pillow bracket according to an embodiment of the present utility model;
[0030] Figure 11 This is a schematic diagram of the adjustment component according to an embodiment of the present utility model;
[0031] Figure 12 This is a cross-sectional schematic diagram of the adjustment component according to an embodiment of the present utility model;
[0032] Figure 13 This is a schematic diagram of the positioning block according to an embodiment of the present utility model;
[0033] Figure 14 This is a schematic diagram of a button according to an embodiment of the present invention.
[0034] Figure label:
[0035] Chair back body 100, mounting channel 110, mounting hole 111, annular groove 120, guide rail 130;
[0036] Lumbar support 200, sliding groove 210, card slot 211, receiving groove 220, guide groove 230;
[0037] Adjustment component 300, sliding part 310, snap-fit part 320, positioning block 330, first mounting groove 331, positioning groove 332, button 340, second mounting groove 341, positioning post 342, pressing part 343, connecting post 344, edging 345, elastic element 350. Detailed Implementation
[0038] The embodiments of this utility model are described in detail below. Examples of these 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 utility model, and should not be construed as limiting this utility model.
[0039] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.
[0040] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0041] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0042] Reference Figures 1 to 14This utility model provides a lumbar support lifting device, including a chair back body 100, a lumbar support bracket 200, a positioning structure, and an adjustment assembly 300. The chair back body 100 has an installation channel 110 arranged vertically, and the front side wall of the chair back body 100 also has an installation hole 111 communicating with the installation channel 110. The lumbar support bracket 200 is used to install the lumbar support and is movably inserted into the installation channel 110 vertically. The lumbar support bracket 200 has a sliding groove 210 arranged vertically. The positioning structure includes multiple slots 211 arranged vertically on one inner wall of the sliding groove 210. The adjustment component 300 is movably installed in the mounting hole 111 and extends into the slide groove 210. The adjustment component 300 has a sliding part 310 and a snap-fit part 320. The snap-fit part 320 is located behind the sliding part 310. The width of the sliding part 310 is smaller than the width of the slide groove 210. The width of the snap-fit part 320 is larger than the width of the slide groove 210 and can be inserted into any of the snap-fit slots 211. An elastic member 350 is also provided between the adjustment component 300 and the chair back body 100. The adjusting component 300 can move backward along the axial direction of the mounting hole 111, causing the sliding part 310 to be embedded in the sliding groove 210, and the lumbar support bracket 200 can move up and down relative to the backrest body 100; or the elastic member 350 can push the adjusting component 300 forward along the axial direction of the mounting hole 111, causing the locking part 320 to be locked into one of the slots 211, and the locking part 320 can abut against the inner wall of the corresponding slot 211 and prevent the lumbar support bracket 200 from moving up and down relative to the backrest body 100.
[0043] In the lumbar pillow lifting device of this embodiment, the height of the lumbar pillow can be adjusted by pressing the adjustment component 300. When the adjustment component 300 is pressed backward, the elastic element 350 is compressed and deformed, and the adjustment component 300 can move backward along the axial direction of the mounting hole 111, so that the sliding part 310 is embedded backward into the slide groove 210. Since the width of the sliding part 310 is smaller than the width of the slide groove 210, the sliding part 310 can move relative to the lumbar pillow support 200 along the length direction of the slide groove 210. That is, the lumbar pillow support 200 can move up and down relative to the chair back body 100, thereby adjusting the height of the lumbar pillow support 200. When the lumbar support bracket 200 is adjusted to a suitable height, the adjustment component 300 is released. The elastic element 350 returns to its original shape and can push the adjustment component 300 forward along the axial direction of the mounting hole 111, causing the locking part 320 to engage with the corresponding height of the slot 211. Since the width of the locking part 320 is greater than the width of the sliding groove 210 and can be embedded in the slot 211, the locking part 320 can abut against the inner wall of the slot 211 upwards or downwards, thereby preventing the lumbar support bracket 200 from moving up and down relative to the chair back body 100. Thus, the lumbar support bracket 200 can be fixed at a suitable height. Therefore, the lumbar support adjustment device of this embodiment can achieve lumbar support height adjustment by pressing the adjustment component 300. It has a simple structure and is easy to operate, making it convenient for users and meeting the needs of different users, greatly improving the comfort of the seat.
[0044] Reference Figures 3 to 10 In some embodiments, the positioning structure is in two sets, and the two sets of positioning structures are respectively arranged on the inner walls of opposite sides of the slide groove 210. Each slot 211 of one set of positioning structures corresponds to each slot 211 of the other set of positioning structures and is arranged opposite to each other. The snap-fit part 320 can snap into the two opposite slots 211.
[0045] In the above structure, by setting two sets of positioning structures, the snap-fit part 320 can simultaneously snap into the two opposite snap-fit slots 211 and simultaneously abut against the inner walls of the two side snap-fit slots 211, thereby making the support and positioning of the snap-fit part 320 for the lumbar pillow bracket 200 more balanced and stable.
[0046] Reference Figures 3 to 14 In some embodiments, the cross-section of the latching portion 320 is circular, and the inner wall of the slot 211 is an arc-shaped surface that matches the outer peripheral wall of the latching portion 320. This increases the contact area when the latching portion 320 abuts against the inner wall of the slot 211, thereby making the support and positioning of the latching portion 320 for the lumbar pillow bracket 200 more balanced and stable.
[0047] It is understood that the cross-section of the latching part 320 can be circular or other shapes, and this utility model does not specifically limit this. The inner wall of the slot 211 can be adapted to fit the latching part 320, or there can be a gap between part of the inner wall of the slot 211 and the outer wall of the latching part 320. This utility model does not specifically limit this, as long as the latching part 320 can be embedded in the slot 211 and can abut against part of the inner wall of the slot 211.
[0048] Reference Figures 1 to 14 In some embodiments, the adjustment component 300 includes a button 340 and a positioning block 330. The positioning block 330 is disposed in the mounting hole 111. The snap-fit part 320 and the sliding part 310 are both disposed on the positioning block 330. The button 340 is mounted on the front end of the positioning block 330. The elastic element 350 is disposed between the button 340 and the backrest body 100.
[0049] In the above structure, by setting the adjustment component 300 as a positioning block 330 and a knob, the positioning block 330 is installed in the mounting hole 111, and the snap-fit part 320 and the sliding part 310 are both set on the positioning block 330, thereby facilitating the positioning of the lumbar support 200. The knob is installed at the front end of the positioning block 330, so that the user can adjust the height of the lumbar support 200 by pressing the knob.
[0050] Reference Figures 1 to 14 In some embodiments, the cross-sectional shape of the mounting hole 111 is the same as that of the sliding portion 310, thereby improving the stability of the movement of the positioning block 330 when the button 340 is pressed. In the width direction of the groove 210, the engaging portion 320 protrudes outward relative to the sliding portion 310 and abuts against the inner periphery of the mounting hole 111, thereby preventing the positioning block 330 from disengaging forward from the mounting hole 111 and confining the positioning block 330 within the mounting hole 111.
[0051] Reference Figures 3 to 14 In some embodiments, the front end of the positioning block 330 is provided with a first mounting groove 331, and the button 340 is provided with a second mounting groove 341. A fastener extending into the first mounting groove 331 is installed in the second mounting groove 341. Two sets of positioning components are also provided between the positioning block 330 and the button 340. The positioning components include a first positioning part provided in the positioning block 330 and a second positioning part provided in the button 340. The first positioning part is provided with a positioning groove 332, and the second positioning part is provided with a positioning post 342 adapted to the positioning groove 332. When the positioning post 342 is embedded in the corresponding positioning groove 332, the first mounting groove 331 and the second mounting groove 341 are aligned. This facilitates the installation and positioning of the button 340 and the positioning block 330, and makes it easier to install the fasteners into the second mounting groove 341 and the first mounting groove 331 in sequence.
[0052] It is understood that the number of positioning components can be two, one, three, or more, and this utility model does not specifically limit this. Furthermore, besides positioning the positioning groove 332 in the first positioning part and positioning the positioning post 342 in the second positioning part, in some embodiments, positioning the positioning groove 332 in the second positioning part and positioning the positioning post 342 in the first positioning part, this utility model also does not specifically limit this.
[0053] Reference Figures 3 to 8 In some embodiments, the lumbar support 200 is provided with an annular groove 120 surrounding the mounting hole 111. The button 340 has a connecting post 344 and a pressing part 343. The second mounting groove 341 is opened in the connecting post 344. The pressing part 343 is provided at the front end of the connecting post 344 and surrounds the outer periphery of the connecting post 344. The outer periphery of the pressing part 343 is provided with a rearwardly extending rim 345. The rim 345 is movably embedded in the annular groove 120. The elastic member 350 is sleeved on the outer periphery of the connecting post 344 and located between the rim 345 and the connecting post 344. One end of the elastic member 350 abuts against the backrest body 100, and the other end abuts against the pressing part 343.
[0054] In the above structure, the button 340 includes a pressing part 343 and a connecting part. The pressing part 343 is located at the front end of the connecting post 344 and surrounds the outer periphery of the connecting post 344, thereby increasing the pressing area of the button 340 and making it more convenient for the user to adjust the height of the lumbar pillow. Secondly, the periphery 345 of the button 340 is embedded in the annular groove 120, thereby improving the movement stability of the button 340 when pressed. In addition, the elastic element 350 is located in the annular groove 120 and between the periphery 345 and the connecting post 344, thereby confining the elastic element 350 within the annular groove 120. The pressing part 343 of the button 340 can also shield the elastic element 350, thereby effectively protecting the elastic element 350 and preventing damage caused by exposure.
[0055] Reference Figures 3 to 10 In some embodiments, the rear side of the lumbar support 200 is provided with a receiving groove 220 that communicates with the sliding groove 210. When the adjusting component 300 moves backward along the axial direction of the mounting hole 111 and the sliding part 310 is embedded in the sliding groove 210, the snap-fit part 320 can be embedded in the receiving groove 220 and move up and down with the sliding part 310.
[0056] In the above structure, the accommodating groove 220 provides a accommodating space for the snap-fit part 320, so that when the sliding part 310 is embedded in the sliding groove 210, the snap-fit part 320 can move up and down synchronously with the snap-fit part 320 without easily interfering or colliding with the lumbar support 200, thereby ensuring the smooth movement of the lumbar support 200.
[0057] Understandably, in order for the engaging part 320 to move synchronously with the sliding part 310 when the sliding part 310 is embedded in the sliding groove 210, in addition to opening a receiving groove 220 connected to the sliding groove 210 on the rear side of the lumbar support 200, the thickness of the sliding groove 210 can be set to be less than the thickness of the mounting channel 110, so that a gap is formed between the rear side wall of the sliding groove 210 and the rear inner wall of the mounting channel 110. Thus, when the sliding part 310 is embedded in the sliding groove 210, the engaging part 320 can be embedded in the gap between the rear side wall of the sliding groove 210 and the rear inner wall of the mounting channel 110, and can move synchronously with the sliding part 310.
[0058] Reference Figures 3 to 10 In some embodiments, the lumbar support 200 is provided with a guide groove 230 arranged in the vertical direction, and the inner wall of the mounting channel 110 is provided with a guide rail 130 adapted to the guide groove 230. The guide rail 130 is movably installed in the guide groove 230 and can move up and down along the guide groove 230. This can guide the lifting and lowering of the lumbar support 200 and improve the lifting and lowering stability of the lumbar support 200, so that the lumbar support 200 can stably lift and lower relative to the chair back body 100 along the guide rail 130.
[0059] It is understood that, in addition to setting the guide groove 230 on the lumbar support 200 and the guide rail 130 on the inner wall of the installation channel 110, in some embodiments, the guide groove 230 can also be set on the inner wall of the installation channel 110 and the guide rail 130 can be set on the lumbar support 200. This utility model does not specifically limit this.
[0060] An embodiment of this utility model also proposes a seat, which is equipped with a lumbar pillow lifting device of any of the above embodiments. In use, the height of the lumbar pillow can be adjusted by pressing the adjustment component 300. The structure is simple and easy to operate, which not only makes it convenient for users to use, but also meets the needs of different users, greatly improving the flexibility and comfort of the seat.
[0061] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A neck pillow lifting device, characterized by, include: The chair back body (100) has an installation channel (110) arranged in the vertical direction, and the front side wall of the chair back body (100) also has an installation hole (111) that communicates with the installation channel (110). A lumbar support bracket (200) is movably inserted into the mounting channel (110) in the vertical direction, and the lumbar support bracket (200) is provided with a sliding groove (210) arranged in the vertical direction. The positioning structure includes multiple slots (211) arranged along the vertical direction on one side of the inner wall of the slide (210). An adjustment component (300) is movably mounted in the mounting hole (111) and extends into the slide groove (210). The adjustment component (300) has a sliding part (310) and a snap-fit part (320). The snap-fit part (320) is located behind the sliding part (310). The width of the sliding part (310) is smaller than the width of the slide groove (210). The width of the snap-fit part (320) is larger than the width of the slide groove (210) and can be inserted into any of the snap-fit grooves (211). An elastic element (350) is also provided between the adjustment component (300) and the chair back body (100). The adjustment component (300) can move backward along the axial direction of the mounting hole (111) and cause the sliding part (310) to be embedded in the sliding groove (210), and the lumbar support (200) can move up and down relative to the chair back body (100). Alternatively, the elastic element (350) can push the adjustment component (300) forward along the axial direction of the mounting hole (111) and cause the snap-fit part (320) to snap into one of the slots (211), the snap-fit part (320) can abut against the inner wall of the corresponding slot (211) and prevent the lumbar support (200) from moving up and down relative to the backrest body (100).
2. The neck pillow lifting device according to claim 1, wherein The positioning structure consists of two sets, which are respectively set on the inner walls of opposite sides of the slide groove (210). Each slot (211) of one set of positioning structures corresponds to and is arranged opposite to each slot (211) of the other set of positioning structures. The snap-fit part (320) can snap into the two opposite slots (211).
3. The neck pillow lifting device according to claim 2, wherein The cross-section of the snap-fit part (320) is circular, and the inner wall of the snap-fit groove (211) is an arc-shaped surface that matches the outer peripheral wall of the snap-fit part (320).
4. The neck pillow lifting device according to claim 1, wherein The adjustment component (300) includes a button (340) and a positioning block (330). The positioning block (330) is inserted into the mounting hole (111). The snap-fit part (320) and the sliding part (310) are both located on the positioning block (330). The button (340) is installed at the front end of the positioning block (330). The elastic element (350) is located between the button (340) and the backrest body (100).
5. The neck pillow lifting device according to claim 4, wherein The cross-sectional shape of the mounting hole (111) is the same as that of the sliding part (310). In the width direction of the groove (210), the snap-fit part (320) protrudes outward relative to the sliding part (310) and can abut against the inner periphery of the mounting hole (111).
6. The neck pillow lifting device according to claim 4, wherein The positioning block (330) has a first mounting groove (331) at its front end, and the button (340) has a second mounting groove (341). A fastener extending into the first mounting groove (331) is installed in the second mounting groove (341). At least one set of positioning components is provided between the positioning block (330) and the button (340). The positioning components include a first positioning part provided on the positioning block (330) and a second positioning part provided on the button (340). One of the first positioning part and the second positioning part is provided with a positioning groove (332), and the other is provided with a positioning post (342) adapted to the positioning groove (332). When the positioning post (342) is embedded in the corresponding positioning groove (332), the first mounting groove (331) and the second mounting groove (341) are aligned.
7. The neck pillow lifting device according to claim 6, wherein The lumbar support bracket (200) is provided with an annular groove (120) surrounding the outer periphery of the mounting hole (111). The button (340) has a connecting post (344) and a pressing part (343). The second mounting groove (341) is opened on the connecting post (344). The pressing part (343) is located at the front end of the connecting post (344) and surrounds the outer periphery of the connecting post (344). The outer periphery of the pressing part (343) is provided with a rearwardly extending rim (345). The rim (345) is movably embedded in the annular groove (120). The elastic member (350) is sleeved on the outer periphery of the connecting post (344) and located between the rim (345) and the connecting post (344). One end of the elastic member (350) abuts against the chair back body (100), and the other end abuts against the pressing part (343).
8. The neck pillow lifting device of claim 1, wherein, The rear side of the lumbar support (200) is provided with a receiving groove (220) that communicates with the sliding groove (210). When the adjusting component (300) moves backward along the axial direction of the mounting hole (111) and the sliding part (310) is embedded in the sliding groove (210), the snap-fit part (320) can be embedded in the receiving groove (220) and move up and down with the sliding part (310).
9. The neck pillow lifting device according to claim 1, wherein, The inner wall of the installation channel (110) and the lumbar support bracket (200) are provided with a guide groove (230) arranged in the vertical direction, and the other is provided with a guide rail (130) adapted to the guide groove (230). The guide rail (130) is movably installed in the guide groove (230) and can move up and down along the guide groove (230).
10. A seat, characterized by The device is equipped with a lumbar pillow lifting device as described in any one of claims 1 to 9.