Seat adjustment assembly, seat and vehicle

Abstract

A seat adjustment assembly (100), a seat and a vehicle. The seat adjustment assembly (100) comprises a seat frame assembly (1), a sliding assembly (2) and a first drive mechanism (3), wherein a first frame (11) is rotatably connected to a second frame (12); a first link (131) is rotatably connected to the first frame (11) and a second link (132); a first slide rail (21) is slidably disposed on a second slide rail (22); a first connecting plate (23) is disposed on the first slide rail (21) and has a slide groove (231) formed therein; a second connecting plate (24) is disposed on the second slide rail (22) and connected to the second frame (12); the second link (132) is provided with a first connecting member (135) rotatably disposed within the slide groove (231); the second link (132) is rotatably connected to the second connecting plate (24); and a first adjustment section (2311) of the slide groove (231) has two ends at different heights.

Description

Seat adjustment assembly, seat and vehicle

[0001] Cross-references to related applications

[0002] This application is based on and claims priority to Chinese patent applications No. 202520321822.3 and 202510221038.X, filed on February 26, 2025, entitled “Seat Adjustment Assembly, Seat and Vehicle”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of vehicle seat adjustment assembly technology, and in particular to a seat adjustment assembly, a seat, and a vehicle. Background Technology

[0004] As living standards continue to improve, users are increasingly demanding higher levels of comfort when purchasing vehicles. The comfort of the vehicle's seat adjustment system directly impacts the user's driving and riding experience. Therefore, automakers are gradually emphasizing the adjustability of the seat adjustment system to enhance passenger comfort, such as allowing independent adjustment of the rear and front heights of the seat cushion. However, the flexibility of the seat posture adjustment rate design and the transmission stability in these technologies are still significantly lacking. Therefore, improvements are needed. Summary of the Invention

[0005] The first aspect of this application proposes a seat adjustment assembly, which has the advantages of flexible adjustment rate design and high adjustment stability.

[0006] A seat adjustment assembly according to a first aspect of this application includes: a seat frame assembly including a first frame, a second frame, and a linkage mechanism, wherein the front end of the first frame is rotatably connected to the second frame, the linkage mechanism includes a first link and a second link, a first end of the first link is rotatably connected to the rear end of the first frame, and a second end of the first link is rotatably connected to the first end of the second link; a sliding assembly including a first slide rail, a second slide rail, a first connecting plate, and a second connecting plate, wherein the first slide rail is slidably disposed on the second slide rail in a front-rear direction, the first connecting plate is disposed on the first slide rail and forms a groove extending in a front-rear direction, the second connecting plate is disposed on the second slide rail and connected to the second frame, a first connecting member is provided at the second end of the second link, the first connecting member is slidably disposed in the groove in a front-rear direction and is rotatable relative to the first connecting plate, the second link is rotatably connected to the second connecting plate, the groove includes at least a first adjustment section, the front and rear ends of the first adjustment section having different heights; and a first driving mechanism for driving the first slide rail to slide along the second slide rail.

[0007] According to the seat adjustment assembly of the first aspect of this application, the lifting or lowering rate of the first connecting member can be flexibly controlled by adjusting the slope of the first adjustment section, thereby improving the design flexibility of the lifting or lowering rate of the rear end of the first frame. In addition, the rotational connection between the second link and the second connecting plate can keep the rotation fulcrum of the second link relative to the second connecting plate fixed, thereby improving the reliability of the linkage mechanism transmission and improving the stability of controlling the lifting or lowering of the rear end of the first frame.

[0008] According to some embodiments of this application, the linkage mechanism further includes a third link and a fourth link. The first end of the third link is rotatably connected to the front end of the second frame, and the second end of the third link is rotatably connected to the first end of the fourth link. The rear end of the second frame is rotatably connected to the second connecting plate. The second end of the fourth link is provided with a second connecting member. The second connecting member is slidably disposed in the slide groove along the front-rear direction and is rotatable relative to the first connecting plate. The fourth link is rotatably connected to the second connecting plate. The slide groove further includes a second adjusting section, a first horizontal section, and a second horizontal section. The first adjusting section communicates with the first horizontal section. The front and rear ends of the second adjusting section have different heights. The second adjusting section communicates with the second horizontal section. The first connecting member is slidable between the first adjusting section and the first horizontal section, and the second connecting member is slidable between the second adjusting section and the second horizontal section.

[0009] According to some embodiments of this application, the first adjustment segment is located behind the first horizontal segment, the rear end of the first adjustment segment is lower than the front end of the first adjustment segment, the second adjustment segment is located in front of the second horizontal segment, the rear end of the second adjustment segment is higher than the front end of the second adjustment segment, the first horizontal segment and the second horizontal segment are at the same height, and the rear end of the second horizontal segment is connected to the front end of the first horizontal segment.

[0010] According to some embodiments of this application, the seat adjustment assembly has at least a first state, a second state, and a third state; wherein: in the first state, the first connector is located within the first adjustment section, and the second connector is located within the second horizontal section; in the second state, the first connector is located within the first horizontal section, and the second connector is located within the second adjustment section; in the third state, the first connector is located within the first horizontal section, and the second connector is located within the second horizontal section.

[0011] According to some embodiments of this application, both the sliding component and the linkage mechanism are provided with two arranged at intervals in the left-right direction. The first driving mechanism includes a first driving motor. The first slide rails of the sliding components on both sides are drivenly connected to the output shaft of the first driving motor. The first driving motor is used to drive the first slide rails on both sides to slide.

[0012] According to some embodiments of this application, the first slide rail is provided with a worm gear, the second slide rail is provided with a worm gear that is connected to the worm gear through a transmission. The first drive mechanism further includes a first transmission shaft and a second transmission shaft. The first drive motor is rotatably connected to the worm gears on both sides through the first transmission shaft and the second transmission shaft, and is used to drive the worm gears to rotate.

[0013] According to some embodiments of this application, the first drive motor is a dual-output shaft motor, and the first transmission shaft and the second transmission shaft are respectively connected to the two output shafts of the dual-output shaft motor; and / or, the first transmission shaft and the second transmission shaft are both flexible shafts.

[0014] According to some embodiments of this application, the first drive mechanism further includes a fixed bracket extending in the left-right direction, with both ends of the fixed bracket connected to the first slide rails on both sides, and the first drive motor mounted on the fixed bracket.

[0015] According to some embodiments of this application, the seat adjustment assembly further includes a backrest frame and a second drive mechanism. The second drive mechanism includes a second drive motor, a linkage shaft, and two angle adjusters. The left and right sides of the lower end of the backrest frame are connected to the rear end of the second frame through the angle adjusters. The output shaft of the second drive motor is connected to the two angle adjusters through the linkage shaft.

[0016] The second aspect of this application proposes a seat adjustment assembly.

[0017] A vehicle according to a second aspect embodiment of this application includes: a seat frame assembly, including a second frame and a linkage mechanism, the linkage mechanism including a third link and a fourth link, a first end of the third link being rotatably connected to the front end of the second frame, and a second end of the third link being rotatably connected to the first end of the fourth link; a sliding assembly, including a first slide rail, a second slide rail, a first connecting plate and a second connecting plate, the first slide rail being slidably disposed on the second slide rail in a front-rear direction, the first connecting plate being disposed on the first slide rail and forming a groove extending in a front-rear direction, the second connecting plate being disposed on the second slide rail, the rear end of the second frame being rotatably connected to the second connecting plate, a second connecting member being provided at the second end of the fourth link, the second connecting member being slidably disposed in the groove in a front-rear direction and rotatable relative to the first connecting plate, the fourth link being rotatably connected to the second connecting plate, the groove including at least a second adjusting section, the front and rear ends of the second adjusting section having different heights; and a first driving mechanism for driving the first slide rail to slide along the second slide rail.

[0018] According to the vehicle of the second aspect embodiment of this application, the lifting or lowering rate of the second connecting member can be flexibly controlled by adjusting the slope of the second adjustment section, thereby improving the design flexibility of the lifting or lowering rate of the front end of the second frame. In addition, the rotational connection between the fourth link and the second connecting plate can keep the rotation fulcrum of the fourth link relative to the second connecting plate fixed, thereby improving the reliability of the linkage mechanism transmission and improving the stability of controlling the lifting or lowering of the front end of the second frame.

[0019] The third aspect of this application proposes a type of chair.

[0020] The seat according to a third aspect of this application includes: the aforementioned seat adjustment assembly.

[0021] According to the third aspect embodiment of the seat, the lifting or lowering rate of the first connecting member can be flexibly controlled by adjusting the slope of the first adjustment section, thereby improving the design flexibility of the lifting or lowering rate of the rear end of the first frame. In addition, the rotational connection between the second link and the second connecting plate can keep the rotation fulcrum of the second link relative to the second connecting plate fixed, thereby improving the reliability of the linkage mechanism transmission and improving the stability of controlling the lifting or lowering of the rear end of the first frame.

[0022] The fourth aspect of this application proposes a vehicle.

[0023] The vehicle according to the fourth aspect of this application includes: the aforementioned seat.

[0024] According to the vehicle of the fourth aspect of this application, the lifting or lowering rate of the first connecting member can be flexibly controlled by adjusting the slope of the first adjustment section, thereby improving the design flexibility of the lifting or lowering rate of the rear end of the first frame. In addition, the rotational connection between the second link and the second connecting plate can keep the rotation fulcrum of the second link relative to the second connecting plate fixed, thereby improving the reliability of the linkage mechanism transmission and improving the stability of controlling the lifting or lowering of the rear end of the first frame.

[0025] Additional aspects and advantages of this application 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 this application. Attached Figure Description

[0026] Figure 1 is a schematic diagram of a seat adjustment assembly according to an embodiment of this application;

[0027] Figure 2 is a schematic diagram of the seat frame assembly, sliding assembly and first drive mechanism of the seat adjustment assembly according to an embodiment of the present application;

[0028] Figure 3 is a schematic diagram of the structure in Figure 2 from another angle;

[0029] Figure 4 is a schematic diagram of the structure in Figure 2 from another angle, which is different from the angle in Figure 3;

[0030] Figure 5 is a top view of the section marked AA in Figure 2;

[0031] Figure 6 is a cross-sectional view along AA in Figure 5;

[0032] Figure 7 is a top view of the location of section BB marked in Figure 2;

[0033] Figure 8 is a cross-sectional view along BB in Figure 7;

[0034] Figure 9 is a schematic diagram of the structure in Figure 2 from another angle, which is different from the angles in Figures 3 and 4;

[0035] Figure 10 is a schematic diagram of the first slide rail, the second slide rail, and the first drive mechanism of the seat adjustment assembly according to an embodiment of this application;

[0036] Figure 11 is a cross-sectional view of the first slide rail, the second slide rail, and the first drive mechanism of the seat adjustment assembly according to an embodiment of this application;

[0037] Figure 12 is a schematic diagram of the backrest frame and the second drive mechanism of the seat adjustment assembly according to an embodiment of the present application;

[0038] Figure 13 is a schematic diagram of the structure in Figure 12 from another angle;

[0039] Figure 14 is a partial enlarged view of Figure 12;

[0040] Figure 15 is a partial enlarged view of Figure 13;

[0041] Figure 16 is a schematic diagram of the retaining spring of the seat adjustment assembly according to an embodiment of the present application;

[0042] Figure 17 is a schematic diagram of the fit between the step bolt and bushing of the seat adjustment assembly according to an embodiment of the present application.

[0043] Reference numerals: 100. Seat adjustment assembly; 1. Seat frame assembly; 11. First frame; 111. Support plate; 112. First fixing plate; 113. Seat tray; 114. Seat frame suspension; 115. Connecting tube; 116. Second fixing plate; 12. Second frame; 121. Second frame side plate; 122. Rear cross tube; 123. Third fixing plate; 124. Front cross tube; 131. First connecting rod; 132. Second connecting rod; 1321. First rod body; 1322. Second rod body; 133. Third connecting rod; 134. Fourth connecting rod; 1341. Third rod body; 1342. Fourth rod body; 135. First connector; 136. Second connector; 137. Step bolt; 138. Bushing; 2. Sliding assembly; 21. First 21. Slide rail; 22. Second slide rail; 23. First connecting plate; 231. Slide groove; 2311. First adjusting section; 2312. Second adjusting section; 2313. First horizontal section; 2314. Second horizontal section; 24. Second connecting plate; 3. First drive mechanism; 31. First drive motor; 32. Gearbox; 33. Worm gear; 34. First transmission shaft; 35. Second transmission shaft; 36. Fixed bracket; 37. Mounting bracket; 4. Backrest frame; 41. Backrest side plate; 42. Upper horizontal tube; 43. Headrest guide tube; 44. Backrest suspension; 45. Reinforcing plate; 46. Limiting piece; 5. Second drive mechanism; 51. Second drive motor; 52. Angle adjuster; 53. Linkage shaft; 54. Lower connecting plate; 55. Snap ring. Detailed Implementation

[0044] The embodiments of this application are described in detail below. 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 intended to explain this application, and should not be construed as limiting this application.

[0045] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0046] The seat adjustment assembly 100 according to a first aspect of this application is described below with reference to the accompanying drawings.

[0047] As shown in Figures 1 to 4, the seat adjustment assembly 100 according to the first aspect of this application includes: a seat frame assembly 1, a sliding assembly 2, and a first drive mechanism 3. The seat frame assembly 1 includes a first frame 11, a second frame 12, and a linkage mechanism. The front end of the first frame 11 is rotatably connected to the second frame 12. The linkage mechanism includes a first link 131 and a second link 132. The first end of the first link 131 is rotatably connected to the rear end of the first frame 11, and the second end of the first link 131 is rotatably connected to the first end of the second link 132. The sliding assembly 2 includes a first slide rail 21, a second slide rail 22, a first connecting plate 23, and a second connecting plate 24. The first slide rail 21 extends along the front and rear... The first connecting plate 23 is slidably disposed on the second slide rail 22 and is disposed on the first slide rail 21 and forms a groove 231 extending in the front-back direction. The second connecting plate 24 is disposed on the second slide rail 22 and is connected to the second frame 12. The second end of the second connecting rod 132 is provided with a first connecting member 135. The first connecting member 135 is slidably disposed in the groove 231 in the front-back direction and is rotatable relative to the first connecting plate 23. The second connecting rod 132 is rotatably connected to the second connecting plate 24. The groove 231 includes at least a first adjusting section 2311. The front and rear ends of the first adjusting section 2311 have different heights. The first driving mechanism 3 is used to drive the first slide rail 21 to slide along the second slide rail 22.

[0048] In this embodiment, the first frame 11 is the inner frame, and the second frame 12 is the outer frame. The sliding component 2 is connected to the first frame 11 via the first connecting rod 131 and the second connecting rod 132. The second end of the second connecting rod 132 is rotatably connected to the first connecting plate 23 via the first connecting member 135. The rotatable connection point between the second connecting rod 132 and the second connecting plate 24 is preferably at the middle position between the first end and the second end of the second connecting rod 132, but it can also be at other positions between the first end and the second end of the second connecting rod 132. This allows the second connecting rod 132 to form a lever structure with the rotation fulcrum located at the connection position between the second connecting rod 132 and the second connecting plate 24. Thus, by driving the second end of the second connecting rod 132 to move, the first end of the second connecting rod 132 can be driven to move, which in turn drives the first connecting rod 131 to move, thereby raising or lowering the rear end of the first frame 11.

[0049] Furthermore, the first connecting member 135 is slidably disposed within the slide groove 231 in the front-to-back direction. Driven by the first driving mechanism 3, the first slide rail 21 slides back and forth relative to the second slide rail 22, allowing adjustment of the position of the first connecting member 135 within the slide groove 231. Since the slide groove 231 has first adjustment sections 2311 with different heights at its front and rear ends, the first adjustment section 2311, in conjunction with the first connecting member 135, allows the first slide rail 21 to slide back and forth along the second slide rail 22 via the first driving mechanism 3, enabling the linkage mechanism to control the lifting or lowering of the rear end of the first frame 11. The lifting or lowering rate of the first connecting member 135 can be flexibly controlled by adjusting the slope of the first adjustment section 2311, thereby improving the design flexibility of the lifting or lowering rate of the rear end of the first frame 11. Additionally, the rotational connection between the second connecting rod 132 and the second connecting plate 24 keeps the rotation fulcrum of the second connecting rod 132 relative to the second connecting plate 24 fixed, thus improving the reliability of the linkage mechanism transmission and enhancing the stability of controlling the lifting or lowering of the rear end of the first frame 11.

[0050] The first link 131 has a first axis of rotation and a second axis of rotation relative to the first frame 11 and the second link 132, respectively. The second link 132 has a third axis of rotation and a fourth axis of rotation relative to the first connecting plate 23 and the second connecting plate 24, respectively. The first axis of rotation, the second axis of rotation, the third axis of rotation and the fourth axis of rotation are parallel and all extend in the left and right direction.

[0051] To facilitate understanding of the adjustment of the rear end of the first frame 11 by the seat adjustment assembly 100, we will take the example that the rear end of the first adjustment section 2311 is lower than the front end of the first adjustment section 2311, that is, the front of the first adjustment section 2311 is higher than the rear. When the first drive mechanism 3 drives the first slide rail 21 to slide forward relative to the second slide rail 22, the first connecting plate 23 slides forward relative to the first connecting member 135, causing the first connecting member 135 to slide backward relative to the slide groove 231. When the first connecting member 135 enters the first adjustment section 2311, since the rear end of the first adjustment section 2311 is lower than the front end, the first adjustment section 2311 tends to extend downward in the front-to-back direction. When the first connecting member 135 slides backward relative to the first adjustment section 2311, it is pressed down, that is, the second end of the second connecting rod 132 is pressed down, causing the first end of the second connecting rod 132 to lift up. Thus, the first connecting rod 131 can drive the rear end of the first frame 11 to rotate and lift around the rotation connection point between the front end of the first frame 11 and the second frame 12. For example, when the backrest of the seat is reclined at a large angle, the rear end of the first frame 11 can be lifted to reduce the drop between the lower end of the backrest and the rear end of the seat cushion, so as to better support the human body and improve the riding comfort. When it is necessary to lower the rear end of the first frame 11, the first slide rail 21 can be driven to slide backward relative to the second slide rail 22 by the first drive mechanism 3, and the first connecting member 135 can slide forward relative to the first adjustment section 2311. Thus, the first connecting member 135 can be gradually raised by the first adjustment section 2311, and the height of the second end of the second link 132 can be gradually lowered. Thus, the rear end of the first frame 11 can be lowered by the first link 131.

[0052] It should be noted that this is only an example of one form of the first adjustment segment 2311, and is not a limitation on the form of the first adjustment segment 2311. For example, the first adjustment segment 2311 can also be formed in a form that is lower in the front and higher in the back. When it is necessary to lift the rear end of the first frame 11, the first slide rail 21 is driven to slide backward by the first drive mechanism 3, and the first connecting member 135 is pressed down relative to the first adjustment segment 2311 to lift the rear end of the first frame 11. Conversely, when it is necessary to lower the rear end of the first frame 11, the first slide rail 21 is driven to slide forward by the first drive mechanism 3, and the first connecting member 135 is lifted up relative to the first adjustment segment 2311 to lower the rear end of the first frame 11.

[0053] According to the seat adjustment assembly 100 of the first aspect of this application, the lifting or lowering rate of the first connecting member 135 can be flexibly controlled by adjusting the slope of the first adjustment section 2311, thereby improving the design flexibility of the lifting or lowering rate of the rear end of the first frame 11. In addition, the rotational connection between the second link 132 and the second connecting plate 24 can keep the rotation fulcrum of the second link 132 relative to the second connecting plate 24 fixed, thereby improving the reliability of the linkage mechanism transmission and improving the stability of controlling the lifting or lowering of the rear end of the first frame 11.

[0054] In some embodiments, the first slide rail 21 and the second slide rail 22 can be arranged vertically, such as the first slide rail 21 being located above or below the second slide rail 22. In other embodiments, the first slide rail 21 and the second slide rail 22 can be arranged horizontally, such as the first slide rail 21 being located to the left or right of the second slide rail 22. It should be noted that this is only a limitation on the arrangement of some of the first slide rails 21 and the second slide rail 22, as long as the first slide rail 21 can slide relative to the second slide rail 22 in the front-back direction. The specific arrangement of the first slide rail 21 and the second slide rail 22 is not specifically limited here.

[0055] According to some embodiments of this application, the linkage mechanism further includes a third link 133 and a fourth link 134. The first end of the third link 133 is rotatably connected to the front end of the second frame 12, and the second end of the third link 133 is rotatably connected to the first end of the fourth link 134. The rear end of the second frame 12 is rotatably connected to the second connecting plate 24. The second end of the fourth link 134 is provided with a second connecting member 136. The second connecting member 136 is slidably disposed in the slide groove 231 in the front-rear direction and is rotatable relative to the first connecting plate 23. The fourth link 134 and the first link 134 are connected to the second frame 12. The two connecting plates 24 are rotatably connected. The slide groove 231 also includes a second adjusting section 2312, a first horizontal section 2313, and a second horizontal section 2314. The first adjusting section 2311 is connected to the first horizontal section 2313. The front and rear ends of the second adjusting section 2312 have different heights. The second adjusting section 2312 is connected to the second horizontal section 2314. The first connecting member 135 can slide between the first adjusting section 2311 and the first horizontal section 2313. The second connecting member 136 can slide between the second adjusting section 2312 and the second horizontal section 2314.

[0056] In other words, while the sliding component 2 is connected to the first frame 11 via the first link 131 and the second link 132, it is also connected to the second frame 12 via the third link 133, the fourth link 134, and the second connecting plate 24. The second end of the fourth link 134 is rotatably connected to the first connecting plate 23 via the second connector 136. The rotatable connection point between the fourth link 134 and the second connecting plate 24 is preferably at the middle position between the first and second ends of the fourth link 134, but it can also be at other positions between the first and second ends of the fourth link 134. This makes the fourth link 134 a lever structure with the rotation fulcrum located at the connection position between the fourth link 134 and the second connecting plate 24. Thus, by driving the second end of the fourth link 134 to move, the first end of the fourth link 134 can be driven to move, and then the movement of the first end of the fourth link 134 can drive the movement of the third link 133 to achieve the lifting or lowering of the front end of the second frame 12.

[0057] Furthermore, the first connecting member 135 and the second connecting member 136 are slidably disposed within the slide groove 231 in the front-back direction. The first drive mechanism 3 drives the first slide rail 21 to slide back and forth relative to the second slide rail 22, thereby adjusting the positions of the first connecting member 135 and the second connecting member 136 within the slide groove 231. Since the slide groove 231 has a first adjustment section 2311 and a second adjustment section 2312 with different heights at its front and rear ends, and a first horizontal section 2313 and a second horizontal section 2312 extending in the horizontal direction... 14. Therefore, through the cooperation of the first adjustment section 2311 and the first connecting member 135 and the cooperation of the second adjustment section 2312 and the second connecting member 136, the first slide rail 21 only needs to be controlled by the first drive mechanism 3 to slide back and forth along the second slide rail 22. The rear end of the first frame 11 and the front end of the second frame 12 can be raised or lowered by the linkage mechanism. This can reduce the number of parts in the seat adjustment assembly 100, thereby simplifying the structure of the seat adjustment assembly 100 and reducing the production cost and energy consumption of the seat adjustment assembly 100.

[0058] Furthermore, by setting the first horizontal segment 2313 and the second horizontal segment 2314, during the process of adjusting the rear end of the first frame 11 to lift or lower, the second connecting member 136 can slide back and forth within the second horizontal segment 2314 to keep the height of the front end of the second frame 12 unchanged; during the process of adjusting the front end of the second frame 12 to lift or lower, the first connecting member 135 can slide back and forth within the first horizontal segment 2313 to keep the height of the rear end of the first frame 11 unchanged, so as to facilitate the individual adjustment of the lifting or lowering of the rear end of the first frame 11 or the front end of the second frame 12.

[0059] Meanwhile, by adjusting the slopes of the first adjustment section 2311 and the second adjustment section 2312, the lifting or lowering rate of the first connecting member 135 and the second connecting member 136 can be flexibly controlled, thereby improving the design flexibility of the angle adjustment rate of the rear end of the first frame 11 and the front end of the second frame 12. In addition, the rotational connection between the second link 132 and the second connecting plate 24 can keep the rotation fulcrum of the second link 132 relative to the second connecting plate 24 fixed, and the rotational connection between the fourth link 134 and the second connecting plate 24 can keep the rotation fulcrum of the fourth link 134 relative to the second connecting plate 24 fixed, thereby improving the reliability of the linkage mechanism transmission and enhancing the stability of controlling the lifting or lowering of the rear end of the first frame 11 and the front end of the second frame 12.

[0060] The first link 131 has the first and second rotation axes relative to the first frame 11 and the second link 132, respectively. The second link 132 has the third and fourth rotation axes relative to the first connecting plate 23 and the second connecting plate 24, respectively. The third link 133 has the fifth and sixth rotation axes relative to the second frame 12 and the fourth link 134, respectively. The fourth link 134 has the seventh and eighth rotation axes relative to the first connecting plate 23 and the second connecting plate 24, respectively. The first, second, third, fourth, fifth, sixth, seventh, and eighth rotation axes are parallel and all extend in the left-right direction.

[0061] According to some embodiments of this application, the first adjusting segment 2311 is located behind the first horizontal segment 2313, and the rear end of the first adjusting segment 2311 is lower than the front end of the first adjusting segment 2311. The second adjusting segment 2312 is located in front of the second horizontal segment 2314, and the rear end of the second adjusting segment 2312 is higher than the front end of the second horizontal segment 2312. The first horizontal segment 2313 and the second horizontal segment 2314 are at the same height, and the rear end of the second horizontal segment 2314 is connected to the front end of the first horizontal segment 2313. That is, the first adjusting segment 2311, the second adjusting segment 2312, the first horizontal segment 2313, and the second horizontal segment 2314 are connected sequentially, thereby reducing the processing difficulty of the groove 231.

[0062] According to some embodiments of this application, the seat adjustment assembly 100 has at least a first state, a second state, and a third state; wherein: in the first state, the first connector 135 is located within the first adjustment section 2311, and the second connector 136 is located within the second horizontal section 2314. Since the first connector 135, when located within the first adjustment section 2311, can lift the rear end of the first frame 11, and the second connector 136, when located within the second horizontal section 2314, can keep the front end of the second frame 12 at a fixed height, that is, in the first state, the rear end of the first frame 11 is lifted, and the front end of the second frame 12 remains unchanged. At this time, the seat can be in a reclining mode, i.e., the backrest is laid flat at its maximum angle. Lifting the rear end of the first frame 11 reduces the drop between the lower end of the backrest and the rear end of the seat cushion, thus avoiding discomfort caused by the occupant's lower back being unsupported.

[0063] In the second state, the first connector 135 is located within the first horizontal section 2313, and the second connector 136 is located within the second adjustment section 2312. Since the first connector 135 is located within the first horizontal section 2313, the height of the rear end of the first frame 11 can remain fixed. When the second connector 136 is located within the second adjustment section 2312, it can lift the front end of the second frame 12. That is, in the second state, the height of the rear end of the first frame 11 remains unchanged while the front end of the second frame 12 is raised. At this time, the seat can be in a zero-gravity mode, and the user's legs can be raised by lifting the front end of the second frame 12 to provide a more comfortable seating experience.

[0064] In the third state, the first connector 135 is located within the first horizontal segment 2313, and the second connector 136 is located within the second horizontal segment 2314. That is, at this time, the height of the rear end of the first frame 11 remains unchanged as if at the default height, and the height of the front end of the second frame 12 remains unchanged as if at the default height. At this time, the seat can be in a normal sitting posture, i.e., the initial posture.

[0065] Specifically, in the initial position, the first connecting member 135 is located within the first horizontal section 2313, and the second connecting member 136 is located within the second horizontal section. When the first driving mechanism 3 drives the first slide rail 21 to slide forward, the first connecting member 135 and the second connecting member 136 slide backward relative to the slide groove 231. When the first connecting member 135 enters the first adjusting section 2311, it is pressed down as it slides backward relative to the first adjusting section 2311. The second end of the second connecting rod 132 is pressed down, causing the first end of the second connecting rod 132 to lift. Thus, the first connecting rod 131 can drive the rear end of the first frame 11 to rotate and lift around the rotational connection point between the front end of the first frame 11 and the second frame 12. During this process, the second connecting member 136 can remain sliding within the second horizontal section 2314, that is, the height of the second connecting member 136 remains unchanged. This ensures that the third connecting rod 133 and the fourth connecting rod 134 remain stationary relative to the second frame 12, thereby maintaining the posture of the second frame 12 during the process of controlling the lifting or lowering of the rear end of the first frame 11. When the rear end of the first frame 11 needs to be lowered, the first slide rail 21 can be driven to slide backward by the first drive mechanism 3, and the first connector 135 and the second connector 136 slide forward relative to the slide groove 231. During the forward sliding of the first connector 135 relative to the first adjustment section 2311, it is gradually raised, and the height of the second end of the second link 132 gradually decreases, so that the rear end of the first frame 11 can be lowered by the first link 131.

[0066] When the first drive mechanism 3 drives the first slide rail 21 to slide backward, the first connecting member 135 and the second connecting member 136 slide forward relative to the slide groove 231. When the second connecting member 136 enters the second adjustment section 2312, it is pressed down as it slides forward relative to the second adjustment section 2312. That is, the second end of the fourth link 134 is pressed down, causing the first end of the fourth link 134 to lift up. This allows the front end of the second frame 12 to rotate and lift around the rotation connection point between the rear end of the second frame 12 and the second connecting plate 24 via the third link 133. During this process, the first connecting member 135 can remain within the first horizontal section 2313, that is, the height of the first connecting member 135 remains unchanged. This ensures that the first link 131 and the second link 132 remain stationary relative to the first frame 11, thus maintaining the posture of the first frame 11 relative to the second frame 12 during the process of controlling the lifting or lowering of the front end of the second frame 12. When it is necessary to lower the front end of the second frame 12, the first slide rail 21 can be driven forward by the first drive mechanism 3, the first connector 135 and the second connector 136 slide backward relative to the slide groove 231, the second connector 136 is gradually raised when it slides backward along the second adjustment section 2312, and the height of the second end of the fourth link 134 gradually decreases, so that the front end of the second frame 12 can be lowered by the third link 133.

[0067] It should be noted that this is only an example of one type of slide groove 231 to facilitate understanding of the cooperation between slide groove 231 and linkage mechanism. For example, in another embodiment, the first horizontal segment 2313 is located behind the first adjusting segment 2311, and the rear end of the first adjusting segment 2311 is higher than the front end of the first adjusting segment 2311. The second horizontal segment 2314 is located in front of the second adjusting segment 2312, and the front end of the second adjusting segment 2312 is higher than the rear end of the second adjusting segment 2312. In this embodiment, when the first slide rail 21 slides forward relative to the second slide rail 22, the front end of the second frame 12 is lifted by the third link 133 and the fourth link 134; when the first slide rail 21 slides backward relative to the second slide rail 22, the rear end of the first frame 11 is lifted by the first link 131 and the second link 132. Further details are omitted here.

[0068] According to some embodiments of this application, as shown in Figures 10 and 11, both the sliding component 2 and the linkage mechanism have two components arranged at intervals along the left-right direction. The first driving mechanism 3 includes a first driving motor 31. The first slide rails 21 of both sliding components 2 are drivenly connected to the output shaft of the first driving motor 31. The first driving motor 31 is used to drive the first slide rails 21 on both sides to slide. That is, the sliding component 2 on the left side is connected to the first frame 11 and the second frame 12 through the left linkage mechanism, and the sliding component 2 on the right side is connected to the first frame 11 and the second frame 12 through the right linkage mechanism. The first driving motor 31 can simultaneously drive the first slide rails 21 on both sides to slide along the second slide rail 22 in the front-back direction.

[0069] Therefore, only one first drive motor 31 is needed to simultaneously control the sliding of the first slide rails 21 on both sides, and to raise and lower the rear end of the first frame 11 and the front end of the second frame 12. This can effectively reduce the number of first drive motors 31 and reduce the cost of the seat adjustment assembly 100. In addition, the transmission stability between the sliding components 2 and the seat frame assembly 1 can be improved through the two sets of sliding components 2 and the linkage mechanism on the left and right sides, thereby improving the stability of controlling the raising or lowering of the rear end of the first frame 11 and the front end of the second frame 12.

[0070] According to some embodiments of this application, a worm gear is provided on the first slide rail 21, and a worm 33 is provided on the second slide rail 22 for transmission connection with the worm gear. The first drive mechanism 3 further includes a first drive shaft 34 and a second drive shaft 35. A first drive motor 31 is rotatably connected to the worm gears on both sides through the first drive shaft 34 and the second drive shaft 35, and is used to drive the worm gears to rotate. That is, the first slide rail 21 and the second slide rail 22 are connected by transmission through the worm gear and worm 33 structure. The first drive motor 31 can transmit driving force to the worm gears on both sides through the first drive shaft 34 and the second drive shaft 35, respectively, to drive the worm gears to rotate on the worm 33, so as to adjust the position of the worm gears on the worm 33, thereby driving the first slide rail 21 to slide back and forth relative to the second slide rail 22 through the worm gears. The cooperation between the worm gear and the worm 33 can improve the stability of the first drive mechanism 3 driving the first slide rail 21 to slide. At the same time, the worm gear and the worm 33 can achieve self-locking, so that when the worm gear does not receive the driving force of the first drive motor 31, it can remain in the position on the worm 33, thereby ensuring the stability of the seat frame assembly 1 in various modes such as the front end of the second frame 12 being raised or the rear end of the first frame 11 being raised.

[0071] In a specific example, the worm gear is integrated into the gearbox 32, which can convert the driving force transmitted by the first drive shaft 34 and the second drive shaft 35 into the rotation of the worm gear on the worm 33. The gearbox 32 is fixed on the first slide rail 21, and the worm 33 is a lead screw, which is rotatably disposed in the gearbox 32. The rotation axis of the lead screw extends in the front-back direction.

[0072] According to some embodiments of this application, the first drive motor 31 is a dual-output shaft motor, and the first transmission shaft 34 and the second transmission shaft 35 are respectively connected to the two output shafts of the dual-output shaft motor. This simplifies the structure of the first drive mechanism 3 and improves the synchronicity of the first drive motor 31 driving the sliding of the first slide rails 21 on both sides. Specifically, the output shaft of the first drive motor 31 extends in the left-right direction, and the first transmission shaft 34 and the second transmission shaft 35 are respectively located on the left and right sides of the first drive motor 31. After the first transmission shaft 34 and the second transmission shaft 35 are connected to the two output shafts of the first drive motor 31, driving force can be directly output to the worm gears on both sides, eliminating the need for a steering structure between the first drive motor 31 and the first transmission shaft 34 and the second transmission shaft 35, thus simplifying the structure of the first drive mechanism 3.

[0073] According to some embodiments of this application, both the first drive shaft 34 and the second drive shaft 35 are flexible shafts. Therefore, when there is a difference in the transmission between the worm gears and worm 33 on both sides, the first drive shaft 34 and the second drive shaft 35 can stably output driving force to the worm gears on both sides through deformation, which can better avoid jamming caused by the rigid connection of the first drive shaft 34 and the second drive shaft 35, thereby improving the reliability of the first drive mechanism 3.

[0074] According to some embodiments of this application, the first drive mechanism 3 further includes a fixed bracket 36 extending in the left-right direction. Both ends of the fixed bracket 36 are connected to the first slide rails 21 on both sides, and the first drive motor 31 is mounted on the fixed bracket 36. That is, the first slide rails 21 on both sides can be connected through the fixed bracket 36, thereby ensuring that the first slide rails 21 slide synchronously back and forth, and maintaining the positional relationship between the sliding components 2 on both sides, thus improving the overall structural stability of the seat adjustment assembly 100. Furthermore, the fixed bracket 36 can also provide an installation position for the first drive motor 31, thus enabling the reuse of the fixed bracket 36 and eliminating the need for a separate mounting structure for the first drive motor 31, thereby reducing the cost of the seat adjustment assembly 100.

[0075] In some embodiments, as shown in Figures 5-8, the second connecting rod 132 includes a first rod 1321 and a second rod 1322 arranged at an angle. The rotational connection position between the first connecting rod 131 and the second connecting plate 24 is located at the connection position of the first rod 1321 and the second rod 1322. In the direction from the end of the first rod 1321 away from the second rod 1322 to the end where the first rod 1321 and the second rod 1322 are connected, the second rod 1322 is oriented towards the first frame 11. The fourth link 134 includes a third link 1341 and a fourth link 1342 arranged at an angle. The rotational connection position between the third link 133 and the second connecting plate 24 is located at the connection position of the third link 1341 and the fourth link 1342. In the direction from the end of the third link 1341 away from the fourth link 1342 to the end where the third link 1341 and the fourth link 1342 are connected, the fourth link 1342 extends obliquely towards the second frame 12. Therefore, the space occupied by the second link 1322 and the fourth link 1342 in the vertical direction can be reduced effectively, resulting in a compact overall structure and reasonable layout of the linkage mechanism.

[0076] Specifically, the first connecting member 135 is located at the end of the first rod 1321 opposite to the second rod 1322. The end of the second rod 1322 opposite to the first rod 1321 is rotatably connected to the second end of the first connecting rod 131. The second connecting member 136 is located at the end of the third rod 1341 opposite to the fourth rod 1342. The end of the fourth rod 1342 opposite to the third rod 1341 is rotatably connected to the second end of the third connecting rod 133. In the structure shown in Figure 8, the angle between the second rod 1322 and the first rod 1321 in the counterclockwise direction is an obtuse angle, and the angle between the fourth rod 1342 and the third rod 1341 in the counterclockwise direction is also an obtuse angle. When the first rod 1322... When the first connector 135 is located within the first horizontal segment 2313 and the second connector 136 is located within the second horizontal segment 2314, the connection position between the first rod 1321 and the first connector 135, and the rotational connection position between the second rod 1322 and the first connecting rod 131 are both located above the rotational connection position between the second connecting rod 132 and the second connecting plate 24. The connection position between the third rod 1341 and the second connector 136, and the rotational connection position between the fourth rod 1342 and the third connecting rod 133 are both located above the rotational connection position between the fourth connecting rod 134 and the second connecting plate 24, thereby avoiding occupying the space below the connection position between the second connecting rod 132 and the second connecting plate 24.

[0077] According to some embodiments of this application, as shown in Figures 12-15, the seat adjustment assembly 100 further includes a backrest frame 4 and a second drive mechanism 5. The second drive mechanism 5 includes a second drive motor 51, a linkage shaft 53, and two angle adjusters 52. The lower left and right sides of the backrest frame 4 are connected to the rear end of the second frame 12 through the angle adjusters 52. The output shaft of the second drive motor 51 is connected to the two side angle adjusters 52 through the linkage shaft 53. Therefore, the second drive motor 51 can drive the linkage shaft 53 to rotate, thereby moving the two side angle adjusters 52 and adjusting the angle between the backrest frame 4 and the seat frame assembly 1 to meet the different seating posture requirements of the occupants.

[0078] In some embodiments, the seat adjustment assembly 100 further includes a third drive mechanism (not shown). The sliding component 2 is mounted on the third drive mechanism, which can drive the sliding component 2 to move back and forth or rotate as a whole. This allows the seat frame assembly 1 and the backrest frame 4 to translate or rotate back and forth via the sliding component 2. This improves the seat's adjustment flexibility to better meet different user needs.

[0079] The seat adjustment assembly 100 according to a second aspect of this application is described below with reference to the accompanying drawings.

[0080] According to a second aspect embodiment of the present application, a seat adjustment assembly 100 includes: a seat frame assembly 1, a sliding assembly 2, and a first drive mechanism 3. The seat frame assembly 1 includes a second frame 12 and a linkage mechanism. The linkage mechanism includes a third link 133 and a fourth link 134. The first end of the third link 133 is rotatably connected to the front end of the second frame 12, and the second end of the third link 133 is rotatably connected to the first end of the fourth link 134. The sliding assembly 2 includes a first slide rail 21, a second slide rail 22, a first connecting plate 23, and a second connecting plate 24. The first slide rail 21 is slidably disposed on the second slide rail 22 in a front-rear direction, and the first connecting plate 23 is disposed on... A first slide rail 21 has a groove 231 extending in the front-rear direction. A second connecting plate 24 is disposed on the second slide rail 22. The rear end of the second frame 12 is rotatably connected to the second connecting plate 24. The second end of the fourth connecting rod 134 is provided with a second connecting member 136. The second connecting members 136 are slidably disposed in the groove 231 in the front-rear direction and are rotatable relative to the first connecting plate 23. The fourth connecting rod 134 is rotatably connected to the second connecting plate 24. The groove 231 includes a second adjusting section 2312. The front and rear ends of the second adjusting section 2312 have different heights. The first driving mechanism 3 is used to drive the first slide rail 21 to slide along the second slide rail 22.

[0081] In this embodiment, the first frame 11 is the inner frame, and the second frame 12 is the outer frame. The sliding component 2 is connected to the second frame 12 via the third link 133, the fourth link 134, and the second connecting plate 24. The second end of the fourth link 134 is rotatably connected to the first connecting plate 23 via the second connector 136. The rotatable connection point between the fourth link 134 and the second connecting plate 24 is preferably at the middle position between the first and second ends of the fourth link 134, but it can also be at other positions between the first and second ends of the fourth link 134. This allows the fourth link 134 to form a lever structure with the rotation fulcrum located at the connection point between the fourth link 134 and the second connecting plate 24. Thus, by driving the second end of the fourth link 134 to move, the first end of the fourth link 134 can be driven to move, and then the movement of the first end of the fourth link 134 can drive the movement of the third link 133 to achieve the lifting or lowering of the front end of the second frame 12.

[0082] Furthermore, the rear end of the second frame 12 is rotatably connected to the second connecting plate 24, and the second connecting member 136 is slidably disposed in the slide groove 231 in the front-back direction. By driving the first slide rail 21 to slide back and forth relative to the second slide rail 22 through the first driving mechanism 3, the position of the second connecting member 136 in the slide groove 231 can be adjusted. Since the slide groove 231 has a second adjustment section 2312 with different heights at the front and rear ends, by cooperating with the second adjustment section 2312 and the second connecting member 136, it is only necessary to control the first slide rail 21 to slide back and forth along the second slide rail 22 through the first driving mechanism 3, and the front end of the second frame 12 can be raised or lowered through the linkage mechanism. The lifting or lowering rate of the second connecting member 136 can be flexibly controlled by adjusting the slope of the second adjustment section 2312, thereby improving the design flexibility of the lifting or lowering rate of the front end of the second frame 12. In addition, the rotational connection between the fourth link 134 and the second connecting plate 24 can keep the rotation fulcrum of the fourth link 134 relative to the second connecting plate 24 fixed, thereby improving the reliability of the linkage mechanism transmission and improving the stability of controlling the lifting or lowering of the front end of the second frame 12.

[0083] Among them, the rotation axes of the third link 133 relative to the second frame 12 and the fourth link 134 are the fifth and sixth rotation axes, respectively, and the rotation axes of the fourth link 134 relative to the first connecting plate 23 and the second connecting plate 24 are the seventh and eighth rotation axes, respectively. The fifth, sixth, seventh and eighth rotation axes are parallel and all extend in the left and right direction.

[0084] To facilitate understanding of the adjustment of the front end of the second frame 12 by the seat adjustment assembly 100, we will take the example that the front end of the second adjustment section 2312 is lower than the rear end of the second adjustment section 2312, that is, the front end of the second adjustment section 2312 is lower than the rear end. When the first drive mechanism 3 drives the first slide rail 21 to slide backward, the first connecting plate 23 slides backward relative to the second connecting member 136, causing the second connecting member 136 to slide forward relative to the slide groove 231. When the second connecting member 136 enters the second adjustment section 2312, since the rear end of the second adjustment section 2312 is higher than the front end of the second adjustment section 2312, the second adjustment section 2312 tends to extend downward in the direction from back to front. When the second connecting member 136 slides forward relative to the second adjustment section 2312, it is pressed down, that is, the second end of the fourth link 134 is pressed down, causing the first end of the fourth link 134 to lift up. Thus, the front end of the second frame 12 can be driven to rotate and lift around the rotation connection point between the rear end of the second frame 12 and the second connecting plate 24 through the third link 133, thereby realizing the zero-gravity seat mode. When it is necessary to lower the front end of the second frame 12, the first slide rail 21 can be driven forward by the first drive mechanism 3, and the second connecting piece 136 can slide backward relative to the second adjustment section 2312. Thus, the second connecting piece 136 can be gradually raised by the second adjustment section 2312, so that the height of the second end of the fourth link 134 can be gradually lowered. Thus, the front end of the second frame 12 can be lowered by the third link 133.

[0085] It should be noted that this is only an example of one form of the second adjustment section 2312, and is not a limitation on the form of the second adjustment section 2312. For example, the second adjustment section 2312 can also be formed in a form that is higher in the front and lower in the back. When it is necessary to lift the rear end of the second frame 12, the first slide rail 21 is driven forward by the first drive mechanism 3, and the second connecting member 136 is pressed down relative to the second adjustment section 2312 to lift the front end of the second frame 12. Conversely, when it is necessary to lower the front end of the second frame 12, the first slide rail 21 is driven backward by the first drive mechanism 3, and the second connecting member 136 is lifted up relative to the second adjustment section 2312 to lower the front end of the second frame 12.

[0086] According to the seat adjustment assembly 100 of the second aspect of this application, the lifting or lowering rate of the second connecting member 136 can be flexibly controlled by adjusting the slope of the second adjustment section 2312, thereby improving the design flexibility of the lifting or lowering rate of the front end of the second frame 12. In addition, the rotational connection between the fourth link 134 and the second connecting plate 24 can keep the rotation fulcrum of the fourth link 134 relative to the second connecting plate 24 fixed, thereby improving the reliability of the linkage mechanism transmission and improving the stability of controlling the lifting or lowering of the front end of the second frame 12.

[0087] The seat adjustment assembly 100 according to a specific embodiment of this application is described below with reference to Figures 1-17. It is to be understood that the following description is exemplary only and is intended to explain this application, and should not be construed as limiting this application.

[0088] Referring to Figure 1, the seat adjustment assembly 100 includes a seat frame assembly 1, a sliding assembly 2, a first drive mechanism 3, a backrest frame 4, and a second drive mechanism 5.

[0089] As shown in Figures 2-4, the seat frame assembly 1 includes a first frame 11, a second frame 12, and a linkage mechanism. The first frame 11 includes a support plate 111, a first fixing plate 112, a seat plate 113, a seat frame suspension 114, a connecting pipe 115, and a second fixing plate 116. The first fixing plate 112 has two pieces facing each other in the left-right direction. The rear ends of the two first fixing plates 112 are welded to the support plate 111, and the front ends of the two first fixing plates 112 are welded to the seat plate 113. The seat frame suspension 114 is fastened to the support plate 111 and the seat plate 113, and the seat frame suspension 114 can better support the user's buttocks. The second fixing plate 116 has two pieces spaced apart in the left-right direction and fixed to the bottom surface of the seat plate 113 by bolts. The connecting pipe 115 is rotatably passed through the two second fixing plates 116.

[0090] The second frame 12 includes a second frame side plate 121, a rear horizontal tube 122, a third fixing plate 123, and a front horizontal tube 124. The second frame side plate 121 has two pieces facing each other in the left-right direction. The support plate 111 and the first fixing plate 112 are located between the two second frame side plates 121. The rear horizontal tube 122 is located between the two second frame side plates 121 and its two ends are respectively welded to the rear ends of the two second frame side plates 121. The front horizontal tube 124 is located between the two second frame side plates 121 and its two ends are respectively welded to the front ends of the two second frame side plates 121. The third fixing plate 123 has two pieces facing each other in the left-right direction and is welded to the front horizontal tube 124. The two ends of the connecting tube 115 are respectively welded to the two third fixing plates 123 to realize the rotational connection between the connecting tube 115 and the front end of the second frame 12. The front ends of the third fixing plate 123, the front horizontal tube 124, and the two second frame side plates 121 are all located below the seat plate 113.

[0091] As shown in Figures 5-9 and 17, both the connecting mechanism and the sliding assembly 2 are provided with two sets arranged in the left-right direction. The linkage mechanism includes a first link 131, a second link 132, a third link 133, and a fourth link 134. The first link 131 and the second link 132 are located behind the third link 133 and the fourth link 134. The first end of the first link 131 is rotatably connected to the first fixed plate 112 through a stepped bolt 137 and a bushing 138. The second end of the first link 131 is rotatably connected to the first end of the second link 132 through a stepped bolt 137 and a bushing 138. The first end of the third link 133 is rotatably connected to the front end of the second frame side plate 121 through a stepped bolt 137 and a bushing 138. The second end of the third link 133 is rotatably connected to the first end of the fourth link 134 through a stepped bolt 137 and a bushing 138.

[0092] The sliding assembly 2 includes a first slide rail 21, a second slide rail 22, a first connecting plate 23, and a second connecting plate 24. The first slide rail 21 is slidably disposed on the second slide rail 22 in the front-back direction. The first connecting plate 23 is fixed to the first slide rail 21 by bolts. A groove 231 extending in the front-back direction is formed on the first connecting plate 23. The groove 231 passes through the first connecting plate 23 in the left-right direction. The second end of the second connecting rod 132 is slidably connected to the groove 231 by a stepped bolt 137 and a bushing 138 and is rotatable relative to the first connecting plate 23. The stepped bolt 137 and the bushing 138 disposed on the second end of the second connecting rod 132 constitute a first connecting member 135. The second end of the fourth connecting rod 134 is slidably connected to the groove 231 by a stepped bolt 137 and a bushing 138 and is rotatable relative to the first connecting plate 23. The stepped bolt 137 and the bushing 138 disposed on the second end of the fourth connecting rod 134 constitute a second connecting member 136. The second connecting plate 24 is welded to the second slide rail 22. The middle part of the second connecting rod 132 is rotatably connected to the second connecting plate 24 via a stepped bolt 137 and a bushing 138. The middle part of the fourth connecting rod 134 is rotatably connected to the second connecting plate 24 via a stepped bolt 137 and a bushing 138. The positions where the first connecting plate 23 and the second connecting plate 24 mate with the second connecting rod 132 and the fourth connecting rod 134 are located between the sliding components 2 on both sides. The bushing 138 can be a Teflon part to improve its wear resistance.

[0093] As shown in Figures 10 and 11, the first drive mechanism 3 includes a first drive motor 31, two gearboxes 32, two worm gears 33, a first transmission shaft 34, a second transmission shaft 35, a fixed bracket 36, and a mounting bracket 37. The fixed bracket 36 extends in the left-right direction and both ends of the fixed bracket 36 are bolted to the mounting bracket 37. The mounting bracket 37 is screwed to the corresponding first slide rail 21. The first drive motor 31 is snapped onto the fixed bracket 36. The two gearboxes 32 are respectively mounted on the two first slide rails 21. The two worm gears 33 are respectively bolted to the two second slide rails 22. The gearboxes 32 and the corresponding worm gears 33 are engaged by worm gears 33. The two ends of the first transmission shaft 34 are respectively inserted into the corresponding gearboxes 32 and the first drive motor 31. The two ends of the second transmission shaft 35 are respectively inserted into the corresponding gearboxes 32 and the first drive motor 31.

[0094] As shown in Figure 12-16, the backrest frame 4 includes a backrest side panel 41, an upper horizontal tube 42, a headrest guide tube 43, a backrest suspension 44, a reinforcing plate 45, and a limiting piece 46. The backrest side panel 41 has two pieces arranged opposite each other in the left-right direction. The upper ends of the two backrest side panels 41 are welded to both ends of the upper horizontal tube 42, respectively. The headrest guide tube 43 is welded to the upper horizontal tube 42 and has two pieces spaced apart in the left-right direction. The lower ends of the two backrest side panels 41 are welded to the left and right ends of the reinforcing plate 45. The backrest suspension 44 is snapped onto the two backrest side panels 41 and the reinforcing plate 45. The backrest suspension 44 can better support the user's back.

[0095] The second drive mechanism 5 includes a second drive motor 51, an angle adjuster 52, a linkage shaft 53, a lower connecting plate 54, and a retaining ring 55. Two angle adjusters 52 and two lower connecting plates 54 are provided. Two backrest side plates 41 are respectively connected to the lower connecting plate 54 via corresponding angle adjusters 52. The angle adjusters 52 are welded to the backrest side plates 41 and the lower connecting plate 54. Limiting plates 46 are welded to the backrest side plates 41 to limit the rotation angle of the lower connecting plate 54 relative to the backrest side plates 41. The second drive motor 51 is fixed to one backrest side plate 41 with bolts. The linkage shaft 53 passes through the first drive motor 31 and the two angle adjusters 52, and both ends of the linkage shaft 53 are connected to the two angle adjusters 52 via retaining rings 55. Furthermore, the linkage shaft 53 passes through a reinforcing plate 45 and is rotatable relative to the reinforcing plate 45, thus providing good protection for the linkage shaft 53 through the reinforcing plate 45.

[0096] The following description, with reference to the accompanying drawings, describes a seat according to a third aspect of this application.

[0097] The seat according to a third aspect of this application includes: a seat adjustment assembly 100.

[0098] According to the third aspect embodiment of the seat, the lifting or lowering rate of the first connecting member 135 can be flexibly controlled by adjusting the slope of the first adjustment section 2311, thereby improving the design flexibility of the lifting or lowering rate of the rear end of the first frame 11. In addition, the rotational connection between the second link 132 and the second connecting plate 24 can keep the rotation fulcrum of the second link 132 relative to the second connecting plate 24 fixed, thereby improving the reliability of the linkage mechanism transmission and improving the stability of controlling the lifting or lowering of the rear end of the first frame 11.

[0099] The vehicle according to an embodiment of the fourth aspect of this application is described below with reference to the accompanying drawings.

[0100] The vehicle according to a fourth aspect of this application includes: a seat.

[0101] According to the vehicle of the fourth aspect of this application, the lifting or lowering rate of the first connecting member 135 can be flexibly controlled by adjusting the slope of the first adjusting section 2311, thereby improving the design flexibility of the lifting or lowering rate of the rear end of the first frame 11. In addition, the rotational connection between the second link 132 and the second connecting plate 24 can keep the rotation fulcrum of the second link 132 relative to the second connecting plate 24 fixed, thereby improving the reliability of the linkage mechanism transmission and improving the stability of controlling the lifting or lowering of the rear end of the first frame 11.

[0102] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0103] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0104] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A seat adjustment assembly, wherein, include: A seat frame assembly includes a first frame, a second frame, and a linkage mechanism. The front end of the first frame is rotatably connected to the second frame. The linkage mechanism includes a first link and a second link. The first end of the first link is rotatably connected to the rear end of the first frame, and the second end of the first link is rotatably connected to the first end of the second link. A sliding assembly includes a first slide rail, a second slide rail, a first connecting plate, and a second connecting plate. The first slide rail is slidably disposed on the second slide rail in a front-back direction. The first connecting plate is disposed on the first slide rail and forms a groove extending in a front-back direction. The second connecting plate is disposed on the second slide rail and connected to a second frame. A first connecting member is provided at the second end of a second connecting rod. The first connecting member is slidably disposed in the groove in a front-back direction and is rotatable relative to the first connecting plate. The second connecting rod is rotatably connected to the second connecting plate. The groove includes at least a first adjusting section, and the front and rear ends of the first adjusting section have different heights. A first driving mechanism is used to drive the first slide rail to slide along the second slide rail.

2. The seat adjustment assembly according to claim 1, wherein, The linkage mechanism further includes a third link and a fourth link. The first end of the third link is rotatably connected to the front end of the second frame, and the second end of the third link is rotatably connected to the first end of the fourth link. The rear end of the second frame is rotatably connected to the second connecting plate. The second end of the fourth link is provided with a second connecting member. The second connecting member is slidably disposed in the slide groove along the front-back direction and is rotatable relative to the first connecting plate. The fourth link is rotatably connected to the second connecting plate. The slide groove further includes a second adjusting section, a first horizontal section, and a second horizontal section. The first adjusting section communicates with the first horizontal section. The front and rear ends of the second adjusting section have different heights. The second adjusting section communicates with the second horizontal section. The first connecting member is slidable between the first adjusting section and the first horizontal section, and the second connecting member is slidable between the second adjusting section and the second horizontal section.

3. The seat adjustment assembly according to claim 2, wherein, The first adjustment segment is located behind the first horizontal segment, and the rear end of the first adjustment segment is lower than the front end of the first adjustment segment. The second adjustment segment is located in front of the second horizontal segment, and the rear end of the second adjustment segment is higher than the front end of the second adjustment segment. The first horizontal segment and the second horizontal segment are at the same height, and the rear end of the second horizontal segment is connected to the front end of the first horizontal segment.

4. The seat adjustment assembly according to claim 3, wherein, The seat adjustment assembly has at least a first state, a second state, and a third state; wherein: In the first state, the first connector is located within the first adjustment section, and the second connector is located within the second horizontal section; In the second state, the first connector is located within the first horizontal section, and the second connector is located within the second adjustment section; In the third state, the first connector is located within the first horizontal segment, and the second connector is located within the second horizontal segment.

5. The seat adjustment assembly according to any one of claims 1-4, wherein, Both the sliding component and the linkage mechanism have two arranged at intervals in the left-right direction. The first driving mechanism includes a first driving motor. The first slide rails of the sliding components on both sides are connected to the output shaft of the first driving motor. The first driving motor is used to drive the first slide rails on both sides to slide.

6. The seat adjustment assembly according to claim 5, wherein, The first slide rail is provided with a worm gear, the second slide rail is provided with a worm gear that is connected to the worm gear for transmission, the first drive mechanism also includes a first drive shaft and a second drive shaft, and the first drive motor is rotatably connected to the worm gears on both sides through the first drive shaft and the second drive shaft respectively to drive the worm gears to rotate.

7. The seat adjustment assembly according to claim 6, wherein, The first drive motor is a dual-output shaft motor, and the first transmission shaft and the second transmission shaft are respectively connected to the two output shafts of the dual-output shaft motor, and / or, the first transmission shaft and the second transmission shaft are both flexible shafts.

8. The seat adjustment assembly according to any one of claims 1-7, wherein, It also includes a backrest frame and a second drive mechanism. The second drive mechanism includes a second drive motor, a linkage shaft, and two angle adjusters. The left and right sides of the lower end of the backrest frame are connected to the rear end of the second frame through the angle adjusters. The output shaft of the second drive motor is connected to the two angle adjusters through the linkage shaft.

9. A seat adjustment assembly, wherein, include: A seat frame assembly includes a second frame and a linkage mechanism, the linkage mechanism including a third link and a fourth link, the first end of the third link being rotatably connected to the front end of the second frame, and the second end of the third link being rotatably connected to the first end of the fourth link; A sliding assembly includes a first slide rail, a second slide rail, a first connecting plate, and a second connecting plate. The first slide rail is slidably disposed on the second slide rail in a front-to-back direction. The first connecting plate is disposed on the first slide rail and forms a groove extending in a front-to-back direction. The second connecting plate is disposed on the second slide rail. The rear end of the second frame is rotatably connected to the second connecting plate. The second end of the fourth connecting rod is provided with a second connecting member. The second connecting member is slidably disposed in the groove in a front-to-back direction and is rotatable relative to the first connecting plate. The fourth connecting rod is rotatably connected to the second connecting plate. The groove includes at least a second adjusting section, and the front and rear ends of the second adjusting section have different heights. A first driving mechanism is used to drive the first slide rail to slide along the second slide rail.

10. A type of seat, wherein, include: The seat adjustment assembly according to any one of claims 1-9.

11. A vehicle, wherein, include: The seat according to claim 10.

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