A seat waist pillow front and back stepless adjustment locking mechanism and seat

Abstract

The utility model relates to a kind of seat waist pillow front and rear stepless adjusting locking mechanism and seat, belong to seat adjusting component and seat technical field.It includes waist pillow fixing seat and waist pillow, and front and rear stepless adjusting locking unit is equipped between the waist pillow fixing seat and waist pillow;The front and rear stepless adjusting locking unit includes: waist pillow sliding seat, the waist pillow sliding seat includes seat body and connecting seat, seat body side is equipped with slide rail or slide groove, seat body is equipped with adjusting shaft hole, and connecting seat is horizontally equipped with connecting shaft hole;Adjusting shaft is set in adjusting shaft hole.By the optimization of structure, simplify waist pillow adjusting structure, realize the stepless gear adjustment of a certain distance before and after, and guarantee the barycenter stability of backrest, expand the use scene of seat, improve use convenience, comfort and stability and security, and waist pillow is convenient for adjustment and reset.

Description

Technical Field

[0001] This utility model relates to a stepless adjustment and locking mechanism for a seat lumbar support and a seat, belonging to the field of seat adjustment components and seat technology. Background Technology

[0002] As furniture closely related to human life, chairs bring convenience to people's work and meet the daily needs of desk work. In addition, the backrest is a key component for improving posture and enhancing comfort in daily use of office chairs. While ergonomically designed backrests meet basic needs, current technology offers limited adjustability. For example, people of different heights and with different sitting postures require significantly different backrest support points from an ergonomic perspective. Therefore, to improve the adjustability and adaptability of the backrest, a separate lumbar support component is needed, or a separate lumbar support component should be purchased from the market. Current lumbar support components lack stepless front-to-back adjustment or have complex adjustment functions, resulting in extremely high costs and hindering industrial production.

[0003] This utility model aims to solve this technical problem by equipping the backrest of the seat with a lumbar pillow. Through structural optimization, the lumbar pillow adjustment structure is simplified, enabling stepless adjustment at a certain distance between the front and back, while ensuring the stability of the backrest's center of gravity. This expands the seat's usage scenarios, improves its convenience, comfort, stability, and safety, and the lumbar pillow is easy to adjust and reset. Utility Model Content

[0004] One of the purposes of this utility model is to address the shortcomings of existing lumbar pillow components, which lack stepless front-to-back adjustment or have complex adjustment functions, resulting in extremely high costs and hindering industrial production. This utility model provides a stepless front-to-back adjustment locking mechanism for a seat lumbar pillow. Through structural optimization, the lumbar pillow adjustment structure is simplified, enabling stepless adjustment at a certain distance in front and back while ensuring the stability of the backrest's center of gravity. This expands the usage scenarios of the seat, improves its convenience, comfort, stability, and safety, and makes the lumbar pillow easy to adjust and reset.

[0005] The second objective of this utility model is to provide a seat equipped with a stepless front-to-back lumbar support adjustment and locking mechanism. Based on the lumbar support adjustment structure, the seat can achieve stepless adjustment of a certain distance in front and behind, while ensuring the stability of the backrest's center of gravity and expanding the seat's usage scenarios.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A stepless adjustment and locking mechanism for a seat lumbar pillow includes a lumbar pillow fixing seat and a lumbar pillow, wherein a stepless adjustment and locking unit is provided between the lumbar pillow fixing seat and the lumbar pillow.

[0008] The front and rear stepless adjustment locking unit includes:

[0009] A lumbar pillow sliding seat, comprising a seat body and a connecting seat, wherein the seat body is provided with a slide rail or slide groove on its side and an adjustment shaft hole is provided on the seat body, and the connecting seat is provided with a connecting shaft hole in the transverse direction.

[0010] The adjusting shaft is located in the adjusting shaft hole;

[0011] The lumbar pillow fixing seat includes an adjustment cavity, which is provided with a suitable slide groove or slide rail. The combination of the lumbar pillow sliding seat and the adjustment shaft is fixed in the adjustment cavity. The adjustment cavity is provided with a drive shaft hole and a drive shaft is provided. The drive end of the drive shaft meshes with the adjustment end of the adjustment shaft. The rotation of the drive shaft can drive the adjustment shaft to move axially, so as to realize the stepless sliding adjustment of the lumbar pillow relative to the lumbar pillow fixing seat.

[0012] The lumbar pillow is equipped with a connecting arm, which has a connecting hole. The connecting arm is rotatably connected to the connecting seat through the cooperation of the connecting hole, the connecting shaft hole, and the fixing part. An elastic element is provided between the lumbar pillow and the lumbar pillow sliding seat.

[0013] Preferably, the adjusting shaft adopts a bevel gear structure, including a threaded connection part, a first bevel gear part and a support part, and is connected to the adjusting shaft hole through the threaded connection part. The lumbar pillow fixing seat is located in the adjusting cavity and has an adjusting shaft support hole, and the support part is located in the support hole.

[0014] Preferably, the drive shaft adopts a bevel gear structure, including a drive rod and a second bevel gear section. The second bevel gear section is smaller than the first bevel gear section and the two mesh. The drive rod drives the second bevel gear section to rotate, thereby driving the first bevel gear section to rotate.

[0015] Preferably, both ends of the adjusting shaft are provided with fixing parts and fixing covers.

[0016] Preferably, the drive shaft is further provided with a handle, and the handle and drive shaft are fixed by a fastener and a cover is provided.

[0017] Preferably, the fastener is a screw or bolt, the fixing cover has a countersunk hole, and the end of the fastener extends into the countersunk hole.

[0018] Preferably, the elastic element is a ring spring, the fixing element is a one-way or two-way locking screw, and a cover is also provided at the fixing element 13, the inner end of the cover being adapted to the connecting hole.

[0019] Preferably, the drive rod has a polygonal cross-section, and the handle has a matching polygonal cavity. The drive rod and the polygonal cavity work together to achieve circumferential fixation.

[0020] Preferably, the fastener is a polygonal locking nut.

[0021] A type of seat employs the aforementioned stepless adjustment and locking mechanism for the lumbar support.

[0022] The beneficial effects of this utility model are: by optimizing the structure, the lumbar pillow adjustment structure is simplified, stepless adjustment of a certain distance between the front and back is achieved, and the center of gravity of the backrest is kept stable, expanding the usage scenarios of the seat, improving the convenience, comfort, stability and safety of use, and the lumbar pillow is easy to adjust and reset. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the usage state of this utility model (forward movement state);

[0028] Figure 5 This is a schematic diagram of the usage state (normal state) of this utility model;

[0029] Figure 6 A schematic diagram of the usage state of this utility model (rotated downwards);

[0030] Appendix Figure 1-6 The components are labeled as follows: 1. Lumbar pillow fixing seat, 2. Drive shaft, 3. Handle lever, 4. Fixing component, 5. Cover, 6. Fixing component, 7. Fixing cover, 8. Lumbar pillow sliding seat, 81. Seat body, 82. Connecting seat, 81a. Adjusting shaft hole, 83. Connecting shaft hole, 9. Adjusting shaft, 10. Lumbar pillow, 10a. Connecting arm, 11. Cover, 12. Elastic component, 13. Fixing component. Detailed Implementation

[0031] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0032] Example 1:

[0033] like Figure 1-6As shown, a stepless adjustment and locking mechanism for a seat lumbar pillow includes a lumbar pillow fixing seat 1 and a lumbar pillow 10, wherein a stepless adjustment and locking unit is provided between the lumbar pillow fixing seat 1 and the lumbar pillow 10.

[0034] The front and rear stepless adjustment locking unit includes:

[0035] The lumbar pillow sliding seat 8 includes a seat body 81 and a connecting seat 82. The seat body 81 is provided with a slide rail or slide groove on its side and an adjustment shaft hole 81a. The connecting seat 82 is provided with a connecting shaft hole 83 in the transverse direction.

[0036] Adjusting shaft 9 is located in adjusting shaft hole 81a;

[0037] The lumbar pillow fixing seat 1 includes an adjustment cavity 11. The adjustment cavity 11 is provided with a suitable slide groove or slide rail. The combination of the lumbar pillow sliding seat 8 and the adjustment shaft 9 is fixed in the adjustment cavity 11. The adjustment cavity 11 is provided with a drive shaft hole and a drive shaft 2 is configured thereon. The drive end of the drive shaft 2 meshes with the adjustment end of the adjustment shaft 9. The rotation of the drive shaft 2 can drive the adjustment shaft 9 to move axially, so as to realize the stepless sliding adjustment of the lumbar pillow 10 relative to the lumbar pillow fixing seat 1.

[0038] The lumbar pillow 10 is provided with a connecting arm 10a, which has a connecting hole. The connecting arm 10a is rotatably connected to the connecting seat 82 through the cooperation of the connecting hole, the connecting shaft hole 83, and the fixing member 13. An elastic member 12 is provided between the lumbar pillow 10 and the lumbar pillow sliding seat 8.

[0039] In this embodiment, the adjusting shaft 9 adopts a bevel gear structure, including a threaded connection part, a first bevel gear part and a support part. It is connected to the adjusting shaft hole 81a through the threaded connection part. The lumbar pillow fixing seat 1 is located in the adjusting cavity 11 and has an adjusting shaft 9 support hole, and the support part is located in the support hole.

[0040] In this embodiment, the drive shaft 2 adopts a bevel gear structure, including a drive rod and a second bevel gear section. The second bevel gear section is smaller than the first bevel gear section and the two mesh. The drive rod drives the second bevel gear section to rotate, thereby driving the first bevel gear section to rotate.

[0041] In this embodiment, both ends of the adjusting shaft 9 are provided with fixing parts 6 and fixing covers 7.

[0042] In this embodiment, the drive shaft 2 is also provided with a handle 3, and the handle 3 and the drive shaft 2 are fixed by a fastener and a cover 5 is provided.

[0043] In this embodiment, the fixing member 6 is a screw or bolt, the fixing cover 7 is provided with a countersunk hole, and the end of the fixing member 6 extends into the countersunk hole.

[0044] In this embodiment, the elastic element 12 is a ring spring, the fixing element 13 is a one-way or two-way locking screw, and a cover 11 is also provided on the fixing element 13, the inner end of the cover 11 being adapted to the connecting hole.

[0045] In this embodiment, the cross-section of the drive rod is polygonal, and the handle 3 is provided with a suitable polygonal cavity. The circumferential fixation is achieved by the cooperation between the drive rod and the polygonal cavity.

[0046] In this embodiment, the fixing member 6 is a polygonal locking nut.

[0047] A type of seat employs the aforementioned stepless adjustment and locking mechanism for the lumbar support.

[0048] The beneficial effects of this utility model are: by optimizing the structure, the lumbar pillow adjustment structure is simplified, stepless adjustment of a certain distance between the front and back is achieved, and the center of gravity of the backrest is kept stable, expanding the usage scenarios of the seat, improving the convenience, comfort, stability and safety of use, and the lumbar pillow is easy to adjust and reset.

[0049] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A stepless adjustment and locking mechanism for a seat lumbar support, comprising a lumbar support fixing seat (1) and a lumbar support (10), characterized in that, A stepless front-to-back adjustment locking unit is provided between the lumbar pillow fixing seat (1) and the lumbar pillow (10); The front and rear stepless adjustment locking unit includes: The lumbar pillow sliding seat (8) includes a seat body (81) and a connecting seat (82). The seat body (81) has a slide rail or slide groove on its side and an adjustment shaft hole (81a). The connecting seat (82) has a connecting shaft hole (83) in the lateral direction. An adjusting shaft (9) is provided in the adjusting shaft hole (81a); The lumbar pillow fixing seat (1) includes an adjustment cavity (11), the adjustment cavity (11) is provided with a suitable slide groove or slide rail, the combination of the lumbar pillow sliding seat (8) and the adjustment shaft (9) is fixed in the adjustment cavity (11), the adjustment cavity (11) is provided with a drive shaft hole, and a drive shaft (2) is provided thereon, the drive end of the drive shaft (2) meshes with the adjustment end of the adjustment shaft (9), the rotation of the drive shaft (2) can drive the adjustment shaft (9) to move axially, so as to realize the stepless sliding adjustment of the lumbar pillow (10) relative to the lumbar pillow fixing seat (1); The lumbar pillow (10) is provided with a connecting arm (10a), the connecting arm (10a) is provided with a connecting hole, the connecting arm (10a) is rotatably connected to the connecting seat (82) through the cooperation of the connecting hole with the connecting shaft hole (83) and the fixing member (13), and an elastic member (12) is provided between the lumbar pillow (10) and the lumbar pillow sliding seat (8).

2. The stepless adjustment and locking mechanism for the lumbar support of a seat according to claim 1, characterized in that, The adjusting shaft (9) adopts a bevel gear structure, including a threaded connection part, a first bevel gear part and a support part. It is connected to the adjusting shaft hole (81a) through the threaded connection part. The lumbar pillow fixing seat (1) is located in the adjusting cavity (11) and is provided with the adjusting shaft (9) support hole. The support part is located in the support hole.

3. The stepless adjustment and locking mechanism for the lumbar support of a seat according to claim 2, characterized in that, The drive shaft (2) adopts a bevel gear structure, including a drive rod and a second bevel gear section. The second bevel gear section is smaller than the first bevel gear section and the two mesh. The drive rod drives the second bevel gear section to rotate, thereby driving the first bevel gear section to rotate.

4. The stepless adjustment and locking mechanism for the lumbar support of a seat according to claim 2, characterized in that, The adjusting shaft (9) is equipped with a fixing part (6) and a fixing cover (7) at both ends.

5. The stepless adjustment and locking mechanism for a seat lumbar support according to claim 3, characterized in that: The drive shaft (2) is also provided with a handle (3), which is fixed to the drive shaft (2) by a fastener and is provided with a cover (5).

6. The stepless adjustment and locking mechanism for a seat lumbar support according to claim 4, characterized in that: The fastener (6) is made of screws or bolts, and the fixing cover (7) is provided with a countersunk hole, with the end of the fastener (6) extending into the countersunk hole.

7. The stepless adjustment and locking mechanism for a seat lumbar support according to claim 1, characterized in that: The elastic element (12) is a ring spring, and the fixing element (13) is a one-way or two-way locking screw. A cover (11) is also provided on the fixing element (13), and the inner end of the cover (11) is adapted to the connecting hole.

8. The stepless adjustment and locking mechanism for a seat lumbar support according to claim 5, characterized in that: The cross-section of the drive rod is polygonal, and the handle (3) is provided with a suitable polygonal cavity. The circumferential fixation is achieved by the cooperation between the drive rod and the polygonal cavity.

9. The stepless adjustment and locking mechanism for a seat lumbar support according to claim 4, characterized in that: The fastener (6) is a polygonal locking nut.

10. A type of seat, characterized in that, The seat lumbar support with stepless front-to-back adjustment and locking mechanism as described in any one of claims 1-9 is adopted.

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