Adjustable waist-protecting cushion

Abstract

The adjustable waist-protecting cushion comprises a cushion part (1), the backrest base plate (2) is connected with the cushion part (1); the device further comprises a suspension backrest assembly (3) and an adjusting mechanism (4). The suspension backrest assembly (3) comprises a linkage support (32) and a back cushion (31) connected with the linkage support (32). The adjusting mechanism (4) is connected with the backrest base plate (2) and the linkage support (32) and comprises an adjusting piece (41), the adjusting piece (41) is rotationally connected with the backrest base plate (2) or the linkage support (32), and the suspended backrest assembly (3) can be driven to move by rotating the adjusting piece (41). According to the adjustable waist protection cushion, the suspended backrest assembly can be driven to move towards the preset direction by arranging the suspended backrest assembly and the adjusting piece of the rotating adjusting mechanism, the adjusting operation is simplified, and therefore the efficiency of personalized adjusting is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of seat cushions, in particular to an adjustable waist-protecting seat cushion. Background Art

[0002] A seat cushion is a piece of padding that makes people more comfortable when sitting. With the update and iteration of seat cushions, seat cushion products with backrests and support have gradually appeared. Due to the support function, seat cushions have also derived a certain degree of sitting posture correction function through structures such as curved surfaces.

[0003] Currently, seat cushions on the market are used to soothe the user's back or correct the user's sitting posture by providing back cushions. However, the positions of these back cushions cannot be adjusted, and there are still certain inconveniences in use.

[0004] Therefore, it is necessary to provide a waist support cushion that can adjust the back cushion. Summary of the Invention

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0006] An adjustable lumbar support cushion includes a cushion portion 1; a backrest base plate 2 connected to the cushion portion 1; and also includes a suspended backrest component 3 and an adjustment mechanism 4; the suspended backrest component 3 includes a linkage bracket 32, and a cushion 31 connected to the linkage bracket 32; the adjustment mechanism 4 connects the backrest base plate 2 and the linkage bracket 32, and includes an adjustment member 41, which is rotatably connected to the backrest base plate 2 or the linkage bracket 32. Rotating the adjustment member 41 can drive the suspended backrest component 3 to move.

[0007] Furthermore, the adjustment mechanism 4 further includes a driving gear set 42 connected to the side of the adjustment member 41 close to the backrest base plate 2 ; a transmission gear set 43 connected to the linkage bracket 32 ​​or the backrest base plate 2 and in transmission cooperation with the driving gear set 42 .

[0008] Furthermore, the driving tooth group 42 includes at least one arc-shaped tooth 420, which is spirally distributed on the end surface of the adjusting member 41 and forms an adjusting opening 44; the transmission tooth group 43 is connected to the linkage bracket 32, and includes a plurality of sub-tooth members 430 distributed in an array. Rotating the adjusting member 41 can drive the arc-shaped tooth 420 to engage with different sub-tooth members 430.

[0009] Furthermore, a first self-locking surface 431 is provided on the sub-tooth part 430, which is located at one end of the sub-tooth part 430 distributed along the moving direction, and a second self-locking surface 421 is provided on the arc-shaped tooth 420, which is located on the outer side of the arc-shaped tooth 420 and cooperates with the first self-locking surface 431 to maintain the relative position between the linkage bracket 32 ​​and the backrest base plate 2; and / or a first guide surface 432 is provided on the sub-tooth part 430, which is located at the other end of the sub-tooth part 430 distributed along the moving direction, and a second guide surface 422 cooperating with the first guide surface 432 is provided on the arc-shaped tooth 420.

[0010] Furthermore, the suspended backrest assembly 3 adjusts its height position relative to the seat cushion portion 1 through the adjustment mechanism 4; the angle between the first self-locking surface 431 and the linkage bracket 32 ​​or the backrest base plate 2 is not greater than 90 degrees, and the angle between the first guide surface 432 and the linkage bracket 32 ​​or the backrest base plate 2 is greater than 90 degrees, so that the sub-tooth member 430 is tilted downward.

[0011] Furthermore, a mounting hole 21 is provided on the backrest base plate 2, and the mounting hole 21 is inclined along the moving direction of the suspended backrest component 3; the adjustment member 41 is connected to the mounting hole 21, and includes an operating part 412 and an adjustment part 411, which are respectively located at both ends of the mounting hole 21, and the driving gear group 42 is provided on the adjustment part 411.

[0012] Furthermore, it also includes an inclined sleeve pad 5; the inclined sleeve pad 5 includes a main pad portion 51, whose thickness gradually increases along the inclined direction of the mounting hole 21, located between the adjustment portion 411 and the backrest substrate 2, and / or a sleeve portion 52, connected to the hole wall of the mounting hole 21.

[0013] In some other embodiments, the adjustment mechanism 4 also includes a transmission frame; the transmission frame includes a movable platform, the linkage bracket 32 ​​is connected to the movable platform, and a connecting rod, the two ends of the connecting rod are respectively connected to the backrest base plate 2 and the movable platform, and the connecting rod is connected by the driving gear group 42 to drive the movable platform to move in a specific direction.

[0014] Furthermore, the linkage bracket 32 ​​is slidingly connected to the backrest base plate 2, and the sliding direction is consistent with the moving direction of the linkage bracket 32 ​​driven by the adjusting member 41; a first guide sliding portion 23 is provided on the backrest base plate 2, and a second guide sliding portion 322 is provided on both sides of the linkage bracket 32, which cooperates with the first guide sliding portion 23; and / or a third guide sliding portion 22 is provided on the backrest base plate 2, and a fourth guide sliding portion 321 which cooperates with the third guide sliding portion 22 is provided in the middle of the linkage bracket 32.

[0015] An anti-slip portion 24 is provided on at least one of the first sliding guide portion 23 and the third sliding guide portion 22 . The anti-slip portion 24 is distributed along the sliding direction and is suitable for limiting the linkage bracket 32 ​​from detaching from the backrest base plate 2 during the sliding process.

[0016] The utility model provides an adjustable waist support cushion by arranging a suspended backrest component. The adjusting piece of the rotating adjustment mechanism can drive the suspended backrest component to move in a predetermined direction, thereby simplifying the adjustment operation and effectively improving the efficiency of personalized adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a structural schematic diagram of an adjustable waist support cushion disclosed in Example 1 of the present utility model.

[0019] Figure 2 for Figure 1 Schematic diagram of the structure from another perspective.

[0020] Figure 3 for Figure 1 Schematic diagram of the cross-section of the structure.

[0021] Figure 4 for Figure 3 Schematic diagram of the partially enlarged cross-sectional structure at point A in the middle.

[0022] Figure 5 for Figure 1 Schematic diagram of the exploded structure of the structure.

[0023] Figure 6 for Figure 2 Schematic diagram of the exploded structure of the structure.

[0024] Figure 7 It is a structural diagram of the adjusting part.

[0025] Figure 8 Schematic diagram of the structure of the linkage bracket.

[0026] Figure 9 It is a structural diagram of the inclined sleeve.

[0027] Description of reference numerals:

[0028] 1. Seat cushion;

[0029] 2. Backrest base plate; 21. Mounting hole; 22. Third guide slide; 23. First guide slide; 24. Anti-slip portion;

[0030] 3. Suspended backrest assembly; 31. Back cushion; 32. Linkage bracket; 321. Fourth guide slide; 322. Second guide slide;

[0031] 4. Adjustment mechanism; 41. Adjustment member; 42. Drive gear set; 43. Transmission gear set; 44. Adjustment opening; 411. Adjustment portion; 412. Operating portion; 420. Arc-shaped teeth; 421. Second self-locking surface;

[0032] 422, second guide surface; 430, sub-tooth member; 431, first self-locking surface; 432, first guide surface;

[0033] 5. Inclined sleeve pad; 51. Main pad portion; 52. Socket connection portion. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments and drawings. It should be noted that the embodiments described below in conjunction with the reference drawings are exemplary and are intended to be used to explain the present invention, and should not be understood as limiting the present invention.

[0035] For example, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature; "plurality" means at least two, for example, two, three, etc., unless otherwise specifically specified.

[0036] Terms such as "installed", "connected", "connected", "fixed" etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined.

[0037] For example, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like indicate positions or location relationships based on the positions or location relationships shown in the accompanying drawings, and are intended only to facilitate description of the technical solutions of the present invention, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. For example, when a first feature is "up" or "down" a second feature, it means that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium; when a first feature is "above," "above," or "above" a second feature, it means that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is at a higher level than the second feature; when a first feature is "below," "below," or "below" a second feature, it means that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is at a lower level than the second feature.

[0038] Example 1

[0039] like Figure 1-9 As shown, a preferred embodiment of an adjustable lumbar support cushion provided by the present invention includes a cushion portion 1 suitable for supporting the buttocks of a human body; a backrest base plate 2 connected to the cushion portion 1; and also includes a suspended backrest component 3 and an adjustment mechanism 4; the suspended backrest component 3 includes a linkage bracket 32, and a cushion 31 connected to the linkage bracket 32; the adjustment mechanism 4 is connected to the backrest base plate 2 and the linkage bracket 32, and includes an adjustment member 41, which is rotated to connect the backrest base plate 2 or the linkage bracket 32. The rotation of the adjustment member 41 can drive the suspended backrest component 3 to move in a predetermined direction, which can be a vertical lifting or a horizontal translation. In this embodiment, the rotation of the adjustment member 41 to drive the suspended backrest component 3 to lift and lower in the vertical direction is used as an example for explanation.

[0040] Specifically, the cushion portion 1 includes a bottom plate, and preferably also includes a soft cushion arranged on the bottom plate, and the surface of the soft cushion has a curved surface that fits the curve of the human body.

[0041] The backrest base plate 2 is connected to the rear end of the seat cushion and is arranged at an angle to the seat cushion portion 1 , and the angle is preferably 90 degrees.

[0042] Preferably, the suspended backrest assembly 3 is provided with a plurality of cushions 31, which are arranged in sequence and connected to a linkage bracket 32, and are connected to the backrest base plate 2 through the linkage bracket 32, and are located on the side of the backrest base plate 2 facing away, so that the plurality of cushions 31 are suspended on the backrest base plate 2.

[0043] Furthermore, several cushions 31 are arranged horizontally on the linkage bracket 32. By adjusting the height position of the linkage bracket 32, the several cushions 31 can be adjusted in linkage. There is no need to adjust the positions of the cushions 31 one by one. The positions of all cushions 31 can be adjusted quickly, which simplifies the adjustment operation, improves the operating efficiency, and optimizes the product user experience.

[0044] The adjustment mechanism 4 includes the above-mentioned adjustment member 41 and a transmission assembly. The transmission assembly converts the force of rotating the adjustment member 41 into a thrust for moving the suspended backrest assembly 3 in different directions such as vertical or horizontal directions.

[0045] The transmission assembly includes a drive gear set 42 connected to the side of the adjustment member 41 close to the backrest base plate 2; a drive gear set 43 connected to the linkage bracket 32 ​​or the backrest base plate 2 and in transmission cooperation with the drive gear set 42. In this embodiment, the drive gear set 43 is connected to the linkage bracket 32.

[0046] The drive tooth set 42 includes at least one curved tooth 420 arranged in a spiral pattern on the end surface of the adjustment member 41, forming an adjustment opening 44. The drive tooth set 42 can be a continuous segment of curved teeth 420, spiraling into a spiral, or it can be composed of multiple, disconnected segments of curved teeth 420 arranged along a spiral path. As the adjustment member 41 rotates, the adjustment opening 44 engages and releases the sub-teeth 430 of the drive tooth set 43, causing the curved teeth 420 to mesh with different sub-teeth 430.

[0047] The transmission tooth group 43 is connected to the linkage bracket 32, and includes several sub-tooth parts 430 distributed in an array. The rotating adjustment part 41 can drive the arc-shaped teeth 420 to engage with different sub-tooth parts 430. Specifically, by rotating the adjustment part 41, the adjustment opening 44 can sequentially swallow and discharge adjacent sub-tooth parts 430, thereby driving the linkage bracket 32 ​​to move along the direction of the array distribution of the sub-tooth parts 430. For example, in this embodiment, the sub-tooth parts 430 are distributed on the linkage bracket 32 ​​in the vertical direction. The adjustment part 41 is screwed, and the sub-tooth parts 430 are driven by the driving teeth to drive the linkage bracket 32 ​​to move in the vertical direction, thereby realizing the lifting and lowering adjustment of the suspended backrest component 3.

[0048] Furthermore, a first self-locking surface 431 and a second self-locking surface 421 are respectively provided on the sub-tooth part 430 and the arc-shaped tooth 420. The sub-tooth part 430 is provided with a first self-locking surface 431, which is located at one end of the sub-tooth part 430 distributed along the moving direction, and the arc-shaped tooth 420 is provided with a second self-locking surface 421, which is located on the outer side of the arc-shaped tooth 420 and cooperates with the first self-locking surface 431 to maintain the relative position between the linkage bracket 32 ​​and the backrest base plate 2; and / or the sub-tooth part 430 is provided with a first guide surface 432, which is located at the other end of the sub-tooth part 430 distributed along the moving direction, and the arc-shaped tooth 420 is provided with a second guide surface 422, which cooperates with the first guide surface 432 and is suitable for improving the smoothness when screwing the adjusting part 41.

[0049] In this embodiment, the height position of the suspended backrest component 3 relative to the seat cushion portion 1 is adjusted by the adjustment mechanism 4; the first self-locking surface 431 is arranged at the lower end of the sub-tooth part 430, and the first guide surface 432 is located at the upper end of the sub-tooth part 430, and is distributed in the opposite direction to the first self-locking surface 431, so that the arc-shaped tooth 420 is engaged with the sub-tooth part 430 while further having the function of clamping and limiting, so that the suspended backrest component 3 is locked at a certain height position.

[0050] Under the action of its own gravity, the suspended close component causes the sub-tooth part 430 on the linkage bracket 32 ​​to exert a downward force on the arc, and the first self-locking surface 431 located at the lower end of the sub-tooth part 430 cooperates with the second self-locking surface 421 located on the outside of the arc tooth 420 to form a card-locking limit fit, thereby realizing self-locking after the height position is adjusted.

[0051] The second guiding surface 422 is located on an inner side of the arc-shaped tooth 420 , that is, on a side close to the spiral center, and is opposite to the second self-locking surface 421 .

[0052] Preferably, the angle between the first self-locking surface 431 and the linkage bracket 32 ​​or the backrest base plate 2 is no more than 90 degrees, and the angle between the first guide surface 432 and the linkage bracket 32 ​​or the backrest base plate 2 is greater than 90 degrees, so that the sub-tooth member 430 is tilted downward.

[0053] Furthermore, a mounting hole 21 is provided on the backrest base plate 2, and the mounting hole 21 is tilted along the moving direction of the suspended backrest. Preferably, the tilt direction of the mounting hole 21 intersects with the inclination direction of the sub-tooth part 430. For example, in this embodiment, the sub-tooth part 430 is tilted downward, and the tilt direction of the mounting hole 21 is tilted upward.

[0054] The adjusting member 41 is connected to the mounting hole 21 and includes an operating portion 412 and an adjusting portion 411 , which are respectively located at two ends of the mounting hole 21 . The driving gear is provided on the adjusting portion 411 , which is located at one end facing away from the operating portion 412 .

[0055] By setting the mounting hole 21 at an angle, the spirally distributed arc-shaped teeth 420 are also set at an angle. No matter which direction the arc-shaped teeth 420 are rotated, the arc-shaped teeth 420 located on the lower side can be separated from the sub-tooth parts 430, releasing the engagement, reducing mechanical friction or interference, and improving the smoothness of the operation of the mechanism; at the same time, the arc-shaped teeth 420 located on the upper side can also always keep engaging with the sub-tooth parts 430, driving the movement of the linkage bracket 32, and performing self-locking limit after the adjustment is completed, thereby ensuring the stability of the adjustment process and the results after adjustment, and improving the user experience of the product.

[0056] Furthermore, it also includes an inclined sleeve pad 5, which is suitable for filling the gap between the adjustment part 411 and the backrest base plate 2, avoiding the unpleasant experience caused by the shaking of the adjustment part 41 and improving the product texture.

[0057] The tilting sleeve 5 includes a main cushion portion 51, whose thickness gradually increases along the tilting direction of the mounting hole 21 and is located between the adjustment portion 411 and the backrest base 2, and / or a sleeve portion 52, which connects to the wall of the mounting hole 21 and is located between the adjustment member 41 and the mounting hole 21. In this embodiment, the cavity of the mounting hole 21 is tilted upward, and the main cushion portion 51 gradually increases in thickness from bottom to top along the vertical direction.

[0058] Furthermore, the linkage bracket 32 ​​is slidably connected to the backrest base plate 2, and the sliding direction is consistent with the direction in which the linkage bracket 32 ​​is driven by the adjusting member 41, that is, parallel or overlapping; a first guide sliding portion 23 is provided on the backrest base plate 2, and a second guide sliding portion 322 is provided on both sides of the linkage bracket 32, respectively, which cooperate with the first guide sliding portion 23; and / or a third guide sliding portion 22 is provided on the backrest base plate 2, and a fourth guide sliding portion 321 which cooperates with the third guide sliding portion 22 is provided in the middle of the linkage bracket 32.

[0059] By slidingly connecting the linkage bracket 32 ​​to the backrest base plate 2 , the lifting and lowering adjustment of the suspended backrest assembly 3 is made smoother and more stable.

[0060] In this embodiment, a first guide portion 23 is provided on each side of the backrest base plate 2. These first guide portions are vertically arranged grooves or rails, thereby adjusting the height of the suspended backrest assembly 3. A second guide portion 322 extends from each end of the linkage bracket 32 ​​toward the backrest base plate 2, giving the linkage bracket 32 ​​an overall N-shape when viewed from above. The second guide portions 322 are accommodated and slidable within the first guide portions 23. A third guide portion 22 is provided in the middle of the backrest base plate 2, and a fourth guide portion 321 extends from the middle of the linkage bracket 32 ​​toward the backrest base plate 2.

[0061] Furthermore, an anti-slip portion 24 is provided on at least one of the first guide portion 23 and the third guide portion 22. The anti-slip portion 24 is arranged along the sliding direction and is suitable for preventing the linkage bracket 32 ​​from separating from the backrest base 2 during the sliding process. In this embodiment, the anti-slip portion 24 is provided on both the first guide portion 23 and the third guide portion 22, respectively, to restrain the second guide portion 322 and the fourth guide portion 321 in their respective sliding grooves, thereby preventing the linkage bracket 32 ​​from separating from the backrest base 2.

[0062] Furthermore, the cushion 31 is connected to the linkage bracket 32 ​​through a connecting seat, and an elastic member and a mounting sleeve are provided between the cushion 31 and the connecting seat. The mounting sleeve is provided on the outside of the elastic member. One of the purposes is to increase the dimension of the movable direction of the cushion 31 so that it can better fit the back curve of the human body and optimize the comfort of use and product effect.

[0063] Furthermore, a handle portion is provided on the backrest base plate 2 , which is suitable for holding the lumbar support cushion to provide convenience for moving or transporting. Preferably, the handle portion is a through hole provided on the top of the backrest base plate 2 .

[0064] Example 2

[0065] As a variation of the above embodiment, the above-mentioned adjustment mechanism 4 also includes a transmission frame; the transmission frame includes a movable platform, a linkage bracket 32 ​​connected to the movable platform, a connecting rod, and the two ends of the connecting rod are respectively connected to the backrest base plate 2 and the movable platform. The connecting rod is connected by the driving gear group 42 to drive the movable platform to move in a specific direction.

[0066] For example, the connecting rod is a screw, which is fixed to the backrest base plate 2; the movable platform is threadedly connected to the screw; one end of the adjusting member 41 is a worm, which is transmission-connected to the screw, and the adjusting member 41 is rotated to drive the screw to rotate, thereby moving the movable platform in the vertical direction.

[0067] Furthermore, the movable platform is slidably connected to the backrest base plate 2 , thereby reducing the shaking of the suspended backrest assembly 3 .

[0068] The utility model provides an adjustable waist support cushion by arranging a suspended backrest component. The adjusting piece of the rotating adjustment mechanism can drive the suspended backrest component to move in a predetermined direction, thereby simplifying the adjustment operation and effectively improving the efficiency of personalized adjustment.

[0069] The above embodiments only represent a part of the implementation methods of the present invention. Any modifications, substitutions and improvements made by those skilled in the art without creative work without departing from the concept of the present invention shall fall within the scope of protection of the present invention.

Claims

1. An adjustable lumbar support cushion, comprising a cushion portion (1); a backrest base plate (2) connected to the cushion portion (1); characterized in that: It also includes a suspended backrest assembly (3) and an adjustment mechanism (4); The suspended backrest assembly (3) comprises a linkage bracket (32) and a cushion (31) connected to the linkage bracket (32); The adjustment mechanism (4) is connected to the backrest base plate (2) and the linkage bracket (32), and includes an adjustment member (41) that is rotatably connected to the backrest base plate (2) or rotatably connected to the linkage bracket (32). Rotating the adjustment member (41) can drive the suspended backrest assembly (3) to move.

2. The adjustable lumbar support cushion according to claim 1, characterized in that: The adjustment mechanism (4) further comprises a driving gear set (42) connected to the adjustment member (41) and located on a side close to the backrest base plate (2); The transmission gear set (43) is connected to the linkage bracket (32) or the backrest base plate (2) and is in transmission cooperation with the driving gear set (42).

3. The adjustable waist support cushion according to claim 2, characterized in that: The driving tooth set (42) includes at least one arc-shaped tooth (420) which is spirally distributed on the end surface of the adjusting member (41) and forms an adjusting opening (44); The transmission tooth set (43) is connected to the linkage bracket (32) and includes a plurality of sub-tooth members (430) distributed in an array. Rotating the adjustment member (41) can drive the arc-shaped teeth (420) to engage with different sub-tooth members (430).

4. The adjustable lumbar support cushion according to claim 3, characterized in that: The sub-tooth member (430) is provided with a first self-locking surface (431), which is located at one end of the sub-tooth member (430) distributed along the moving direction; and the arc-shaped teeth (420) are respectively provided with a second self-locking surface (421), which is located on the outer side of the arc-shaped teeth (420) and cooperates with the first self-locking surface (431) to maintain the relative position between the linkage bracket (32) and the backrest base plate (2); And / or a first guide surface (432) is provided on the sub-tooth piece (430), located at the other end of the sub-tooth piece (430) distributed along the moving direction, and a second guide surface (422) is provided on the arc-shaped tooth (420) to cooperate with the first guide surface (432).

5. The adjustable lumbar support cushion according to claim 4, characterized in that: The height position of the suspended backrest component (3) relative to the seat cushion portion (1) is adjusted by the adjustment mechanism (4); The angle between the first self-locking surface (431) and the linkage bracket (32) or the backrest base plate (2) is not greater than 90 degrees, and the angle between the first guide surface (432) and the linkage bracket (32) or the backrest base plate (2) is greater than 90 degrees, so that the sub-tooth member (430) is arranged to tilt downward.

6. The adjustable lumbar support cushion according to claim 4, characterized in that: A mounting hole (21) is provided on the backrest base plate (2), and the mounting hole (21) is arranged obliquely along the moving direction of the suspended backrest component (3); The adjusting member (41) is connected to the mounting hole (21), and comprises an operating portion (412) and an adjusting portion (411), which are respectively located at two ends of the mounting hole (21); the driving gear set (42) is provided on the adjusting portion (411).

7. The adjustable lumbar support cushion according to claim 6, characterized in that: Also includes a tilting sleeve (5); The inclined sleeve pad (5) comprises a main pad portion (51), the thickness of which gradually increases along the inclined direction of the mounting hole (21), located between the adjustment portion (411) and the backrest base plate (2), and / or a sleeve portion (52) connected to the hole wall of the mounting hole (21).

8. The adjustable lumbar support cushion according to claim 2, characterized in that: The regulating mechanism (4) further comprises a transmission frame; The transmission frame includes a movable platform, the linkage bracket (32) is connected to the movable platform, and a connecting rod, the two ends of which are respectively connected to the backrest base plate (2) and the movable platform, and the connecting rod is connected to the movable platform through the driving gear group (42), thereby driving the movable platform to move in a specific direction.

9. The adjustable lumbar support cushion according to any one of claims 1 to 8, characterized in that: The linkage bracket (32) is slidably connected to the backrest base plate (2), and the sliding direction of the linkage bracket (32) is consistent with the moving direction of the linkage bracket (32) driven by the adjustment member (41); A first guide slide portion (23) is provided on the backrest base plate (2), and second guide slide portions (322) are respectively provided on both sides of the linkage bracket (32) to cooperate with the first guide slide portion (23); And / or a third guide slide portion (22) is provided on the backrest base plate (2), and a fourth guide slide portion (321) cooperating with the third guide slide portion (22) is provided in the middle of the linkage bracket (32).

10. The adjustable lumbar support cushion according to claim 9, characterized in that: An anti-slip portion (24) is provided on at least one of the first guide sliding portion (23) and the third guide sliding portion (22); The anti-slip portion (24) is distributed along the sliding direction and is suitable for limiting the linkage bracket (32) from detaching from the backrest base plate (2) during the sliding process.

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