Seat assembly and vehicle

Abstract

The utility model discloses a seat assembly and a vehicle, the seat assembly comprises a first connecting rod and a second connecting rod, one end of the first connecting rod and one end of the second connecting rod are respectively rotatably arranged on a base; the first connecting rod and the second connecting rod rotate relative to the base to drive the seat cushion body to be folded relative to the base; the first connecting rod and the second connecting rod rotate towards the folding direction of the seat cushion body, and the other end of the second connecting rod is suitable for driving the seat cushion body to move towards the direction away from the backrest. According to the seat assembly, the first connecting rod and the second connecting rod rotate to drive the seat cushion body to be folded relative to the base, and in the process that the seat cushion body is folded relative to the base, the other end of the second connecting rod drives the seat cushion body to move in the direction away from the backrest, so that the seat cushion body moves forwards while being folded upwards, and the seat assembly is convenient to use. The interference between the seat cushion foam and the backrest foam is reduced, the overturning angle of the seat cushion body can be optimized without sacrificing the foam shape and thickness, and the comfort level of the seat assembly is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a seat assembly and a vehicle. Background Art

[0002] In the related art, the seat cushion body of a seat can be turned upwards around a rear rotation shaft to reduce the longitudinal dimension of the seat, so that when the seat moves in cooperation with a slide rail, the seat can slide forward a greater distance, thereby increasing the space at the vehicle trunk. However, the rotation angle of the seat cushion body around the fixed rotation shaft at the rear of the seat cushion body is affected by the shapes and thicknesses of the seat cushion foam and the backrest foam. To avoid interference between the two foams after the seat cushion is turned over, usually, only the turning angle of the seat cushion is sacrificed, or the foam shape or foam thickness is sacrificed, thus reducing the riding comfort of passengers. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a seat assembly. According to the seat assembly of the utility model, the first link and the second link rotate relative to the base to drive the seat cushion body to fold relative to the base. During the process of the seat cushion body folding relative to the base, the other end of the second link is adapted to drive the seat cushion body to move in a direction away from the backrest, so that the seat cushion body moves forward while turning upwards, reducing the interference between the seat cushion foam and the backrest foam, and there is no need to sacrifice the foam shape and thickness to optimize the turning angle of the seat cushion body, thereby improving the comfort of the seat assembly.

[0004] The utility model also provides a vehicle with the above-mentioned seat assembly.

[0005] The seat assembly according to the utility model includes: a base, on which a backrest protruding from the base is provided; a first link and a second link, one end of the first link and one end of the second link are respectively rotatably provided on the base; a seat cushion body, on which a first connection point and a second connection point are formed, the first connection point is rotatably connected to the other end of the first link, the second connection point is rotatably connected to the other end of the second link, and the first link and the second link rotate relative to the base to drive the seat cushion body to fold relative to the base; wherein, the first link and the second link rotate in the direction of driving the seat cushion body to fold, and the other end of the second link is adapted to drive the seat cushion body to move in a direction away from the backrest.

[0006] According to the seat assembly of the present utility model, one end of the first connecting rod and one end of the second connecting rod are respectively rotatably arranged on the base. The other end of the first connecting rod and the other end of the second connecting rod are respectively connected to the seat cushion body. The first connecting rod, the second connecting rod, at least part of the seat cushion body and the base jointly construct a four-bar linkage mechanism. The first connecting rod and the second connecting rod rotate relative to the base to drive the seat cushion body to fold relative to the base. During the process of the seat cushion body folding relative to the base, the other end of the second connecting rod is adapted to drive the seat cushion body to move in a direction away from the backrest, thereby realizing that the seat cushion body moves forward while flipping upwards, reducing the interference between the seat cushion foam and the backrest foam, and there is no need to sacrifice the foam shape and thickness to optimize the flipping angle of the seat cushion body, improving the comfort of the seat assembly.

[0007] According to some embodiments of the present utility model, the distance between the first connection point and the second connection point is less than the distance between one end of the first connecting rod and one end of the second connecting rod.

[0008] According to some embodiments of the present utility model, the seat cushion body has a first end arranged close to the backrest and a second end arranged away from the backrest. The second connection point is arranged close to the first end, and the distance between the second end and the first connection point is greater than the distance between the first connection point and the second connection point.

[0009] According to some embodiments of the present utility model, the seat cushion body includes an arc section that is close to the backrest and bends towards the base, and the first connection point and the second connection point are arranged on the arc section.

[0010] According to some embodiments of the present utility model, the seat assembly further includes: a driving device, the driving device is connected to the first connecting rod or the second connecting rod, and the driving device is adapted to drive the first connecting rod to rotate to drive the second connecting rod to rotate or drive the second connecting rod to rotate to drive the first connecting rod to rotate.

[0011] According to some embodiments of the present utility model, the seat assembly further includes: a connecting rod, the connecting rod is arranged on the base, one end of the connecting rod is connected to the driving device, and the other end of the connecting rod is connected to the first connecting rod. The driving device is adapted to drive the connecting rod to rotate to drive the first connecting rod to rotate.

[0012] According to some embodiments of the present utility model, the seat assembly further includes: an angle adjuster, the angle adjuster is connected to the first connecting rod, there are two angle adjusters, and the two angle adjusters are respectively arranged on both sides in the width direction of the base. One of the angle adjusters is connected to one end of the connecting rod, and the other angle adjuster is connected to the other end of the connecting rod. The driving device is adapted to drive the connecting rod to rotate to drive the two angle adjusters to rotate synchronously.

[0013] According to some embodiments of the present invention, a first limiting portion and a second limiting portion are formed on the base, the first limiting portion and the second limiting portion are respectively arranged on two sides of the first connecting rod in the rotation direction, a third limiting portion is formed on the first connecting rod, and the third limiting portion is respectively matched with the first limiting portion and the second limiting portion to limit the movement of the first connecting rod relative to the base.

[0014] According to some embodiments of the present invention, the first limiting portion and the second limiting portion are respectively configured as a first limiting pin and a second limiting pin, a protruding portion is formed on a side of the first connecting rod away from the base along the axis direction of the output shaft of the angle adjuster, and the protruding portion is respectively abutted against the first limiting pin and the second limiting pin to limit the movement of the first connecting rod relative to the base in the circumferential direction of the output shaft of the adjuster.

[0015] The vehicle according to the present invention will be briefly described below.

[0016] The vehicle according to the present invention is provided with the seat assembly described in any one of the above embodiments. Since the vehicle according to the present invention is provided with the seat assembly described in any one of the above embodiments, when the seat cushion body of the vehicle according to the present application is turned up, it can move forward, reducing the interference between the seat cushion foam and the backrest foam, without sacrificing the foam shape and thickness, and improving the riding comfort of the vehicle.

[0017] The additional aspects and advantages of the present invention will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a side view of a seat assembly according to an embodiment of the present invention;

[0020] Figure 2 is a top view of a base according to an embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of a seat assembly in a folded state according to an embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of a seat assembly in an unfolded state according to an embodiment of the present invention.

[0023] Reference Signs:

[0024] 100, Seat assembly;

[0025] 11, Base; 12, Backrest; 13, Seat cushion body; 131, First connection point; 132, Second connection point;

[0026] 21, First connecting rod; 22, Second connecting rod; 23, Angle adjuster; 24, Connecting rod; 25, Driving device;

[0027] 31, First limiting part; 32, Second limiting part; 33, Third limiting part. Detailed implementation mode

[0028] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0029] In the related art, the seat cushion body of the seat can be turned up axially around the rear end rotation axis to reduce the longitudinal dimension of the seat, so that when the seat cooperates with the slide rail, the seat can slide forward a greater distance to increase the space at the vehicle trunk. However, the rotation angle of the seat cushion body around the fixed rotation axis at the rear of the seat cushion body is affected by the shape and thickness of the seat cushion foam and the backrest foam. To avoid interference between the two foams after the seat cushion is turned up, usually only the turning angle of the seat cushion or the foam shape or foam thickness has to be sacrificed, thereby reducing the riding comfort of passengers.

[0030] The following refers to Figures 1-4 Describe the seat assembly according to the embodiments of the present utility model.

[0031] The seat assembly 100 according to the present utility model includes: a base 11, a first connecting rod 21, a second connecting rod 22, and a seat cushion body 13. A backrest 12 protruding from the base 11 is provided on the base 11; one end of the first connecting rod 21 and one end of the second connecting rod 22 are respectively rotatably provided on the base 11; a first connection point 131 and a second connection point 132 are formed on the seat cushion body 13. The first connection point 131 is rotatably connected to the other end of the first connecting rod 21, and the second connection point 132 is rotatably connected to the other end of the second connecting rod 22. The first connecting rod 21 and the second connecting rod 22 rotate relative to the base 11 to drive the seat cushion body 13 to fold relative to the base 11; wherein, the first connecting rod 21 and the second connecting rod 22 rotate in the direction of driving the seat cushion body 13 to fold, and the other end of the second connecting rod 22 is adapted to drive the seat cushion body 13 to move away from the backrest 12.

[0032] In some specific embodiments, the seat assembly 100 is composed of a base 11, a first link 21, a second link 22, and a seat cushion body 13. A backrest 12 extending away from the base 11 is formed on the base 11. One end of the first link 21 is rotatably arranged on the base 11 around a first axis, and one end of the second link 22 is rotatably arranged on the base 11 around a second axis. The first link 21 and the second link 22 are arranged at intervals from each other. First connection points 131 and second connection points 132 which are arranged at intervals from each other are formed on the seat cushion body 13. The other end of the first link 21 is rotatably connected to the first connection point 131, and the other end of the second link 22 is rotatably connected to the second connection point 132. The first link 21, the second link 22, at least a part of the seat cushion body 13, and the base 11 together construct a four-bar linkage mechanism. When the first link 21 rotates to drive the second link 22 to rotate, the folding of the seat cushion body 13 relative to the base 11 is realized. During the folding process of the seat cushion body 13, the other ends of the first link 21 and the second link 22 can drive the seat cushion body 13 to move away from the backrest 12, so that the seat cushion body 13 moves forward while flipping upward, reducing the interference between the seat cushion foam and the backrest 12 foam, without sacrificing the foam shape and thickness to optimize the flipping angle of the seat cushion body 13, and improving the comfort of the seat assembly 100.

[0033] According to the seat assembly 100 of the present invention, one end of the first link 21 and one end of the second link 22 are respectively rotatably arranged on the base 11. The other end of the first link 21 and the other end of the second link 22 are respectively connected to the seat cushion body 13. The first link 21, the second link 22, at least a part of the seat cushion body 13, and the base 11 together construct a four-bar linkage mechanism. The first link 21 and the second link 22 rotate relative to the base 11 to drive the seat cushion body 13 to fold relative to the base 11. During the folding process of the seat cushion body 13 relative to the base 11, the other end of the second link 22 is adapted to drive the seat cushion body 13 to move away from the backrest 12, so that the seat cushion body 13 moves forward while flipping upward, reducing the interference between the seat cushion foam and the backrest 12 foam, without sacrificing the foam shape and thickness to optimize the flipping angle of the seat cushion body 13, and improving the comfort of the seat assembly 100.

[0034] According to some embodiments of the present invention, the distance between the first connection point 131 and the second connection point 132 being less than the distance between one end of the first link 21 and one end of the second link 22 can help control the movement range and trajectory of the seat cushion body 13, ensuring that the seat cushion body 13 can not only lift upward but also move forward when folding, reducing the interference between the seat cushion foam and the backrest 12 foam, without sacrificing the foam shape and thickness to optimize the flipping angle of the seat cushion body 13, and improving the comfort of the seat assembly 100.

[0035] According to some embodiments of the present utility model, the seat cushion body 13 has a first end disposed near the backrest 12 and a second end disposed away from the backrest 12. The second connection point 132 is disposed near the first end, and the distance between the second end and the first connection point 131 is greater than the distance between the first connection point 131 and the second connection point 132.

[0036] In some specific embodiments, one end of the seat cushion body 13 near the backrest 12 is configured as the first end, and one end of the seat cushion body 13 away from the cushion is configured as the second end. The second connection point 132 is disposed near the first end, and the first connection point 131 is disposed on the side of the seat cushion body 13 facing the base 11. The distance between the second end and the first connection point 131 is greater than the distance between the first connection point 131 and the second connection point 132, ensuring that the seat cushion body 13 follows a more ideal movement path during the folding process, so that the first link 21 and the second link 22 can drive the seat cushion body 13 to fold and move forward as long as they move a small angle, reducing the interference between the seat cushion foam and the backrest 12 foam, and there is no need to sacrifice the foam shape and thickness to optimize the flipping angle of the seat cushion body 13, improving the comfort of the seat assembly 100.

[0037] In addition, the distance between the second end and the first connection point 131 being greater than the distance between the first connection point 131 and the second connection point 132 can reduce the physical space required for the seat cushion body 13 to fold over, enabling the seat cushion body 13 to be more compactly retracted after folding to reduce the longitudinal dimension of the seat assembly 100, allowing the seat group to move a greater distance towards the cockpit, thereby increasing the space of the trunk so that passengers can place more items in the trunk.

[0038] According to some embodiments of the present utility model, the seat cushion body 13 includes an arc segment that is curved near the backrest 12 and towards the base 11. The first connection point 131 and the second connection point 132 are disposed on the arc segment. The design of the arc segment can better conform to the human body curve, especially in the hip area, providing better support and comfort for passengers. The design of the arc segment allows the length of the second link 22 to be extended when the seat cushion body 13 folds, and the first link 21 and the second link 22 can move along a more natural path, reducing the interference between the seat cushion body 13 and the backrest 12, while maintaining the optimal shape and thickness of the seat cushion foam, ensuring that the comfort and aesthetics of the seat are not affected.

[0039] According to some embodiments of the present utility model, the seat assembly 100 further includes: a driving device 25, the driving device 25 is connected to the first link 21 or the second link 22, and the driving device 25 is adapted to drive the first link 21 to rotate to drive the second link 22 to rotate or drive the second link 22 to rotate to drive the first link 21 to rotate.

[0040] In some specific embodiments, a driving device 25 is further provided inside the seat assembly 100. The driving device 25 can be configured as an electric motor. The electric motor is fixed on the base 11 and the output end of the electric motor is connected to the first connecting rod 21. The electric motor drives the first connecting rod 21 to rotate, and the power generated by the electric motor is transmitted from the first connecting rod 21 to the second connecting rod 22, thereby realizing the folding and movement of the seat cushion body 13, ensuring the smoothness and consistency of the seat cushion body 13 during folding, and avoiding the imbalance or jamming that may be caused by manual operation.

[0041] In addition, the output end of the electric motor can also be connected to the second connecting rod 22. The electric motor drives the second connecting rod 22 to rotate, and the power generated by the electric motor is transmitted from the second connecting rod 22 to the first connecting rod 21, thereby realizing the folding and movement of the seat cushion body 13, ensuring the smoothness and consistency of the seat cushion body 13 during folding, and avoiding the imbalance or jamming that may be caused by manual operation.

[0042] According to some embodiments of the present invention, the seat assembly further includes: a connecting rod 24. One end of the connecting rod 24 is connected to the driving device 25, and the other end of the connecting rod 24 is connected to the first connecting rod 21. The driving device 25 is adapted to drive the connecting rod 24 to rotate so as to drive the first connecting rod 21 to rotate.

[0043] In some specific embodiments, a connecting rod 24 is further provided inside the seat assembly. The connecting rod 24 is disposed on the base 11, and both ends of the connecting rod 24 are respectively connected to the driving device 25 and the first connecting rod 21. The driving device 25 drives the connecting rod 24 to rotate, and then the connecting rod 24 transmits the power to the first connecting rod 21 connected thereto. The rotation of the first connecting rod 21 drives the folding of the seat assembly 100, thereby realizing the folding of the seat assembly 100.

[0044] According to some embodiments of the present invention, the seat assembly 100 further includes: a recliner 23. The recliner is connected to the first connecting rod 21. There are two recliners 23, and the two recliners are respectively disposed on both sides in the width direction of the base 11. One of the recliners is connected to one end of the connecting rod 24, and the other recliner 23 is connected to the other end of the connecting rod 24. The driving device 25 is adapted to drive the connecting rod 24 to rotate so as to drive the two recliners 23 to rotate synchronously.

[0045] In some specific embodiments, a recliner 23 is further provided in the seat assembly 100. The recliner 23 is a mechanical device that can change or control the angular position of a component. The recliner 23 is connected to the first connecting rod 21 to control the rotation angle of the first connecting rod 21. The recliner 23 is constructed in two parts. A recliner 23 is respectively provided on both sides of the width direction of the base 11. The four-bar linkage is constructed in two groups, which are respectively provided on both sides of the width direction of the base 11 and connected to the corresponding recliners 23 to ensure that the seat cushion body 13 moves synchronously and evenly when folded, avoiding the torque imbalance that may be caused by unilateral drive, thereby causing the seat cushion body 13 to move uncoordinated or wear problems. The two ends of the connecting rod 24 are respectively connected to the two recliners. The output shaft of the angle adjuster 23 is spline-connected, and the driving device 25 is connected to the connecting rod 24. The driving device 25 drives the connecting rod 24 to rotate to drive the two angle adjusters 23 to rotate, ensuring the synchronous movement of the two angle adjusters 23. Regardless of whether the seat cushion body 13 is folded or reset, the two angle adjusters 23 maintain a consistent speed and angle, so that the folding of the seat cushion body 13 is smoother and more stable. Controlling the movement of the two angle adjusters 23 by driving the connecting rod 24 with a motor not only improves the coordination and consistency of the folding of the seat cushion body 13, but also helps to improve the strength and durability of the entire seat assembly 100, while also reducing the number of components in the seat assembly 100 and reducing the manufacturing cost of the seat assembly 100.

[0046] At the same time, the driving device 25 drives the connecting rod 24 to rotate, driving the recliner 23, and then the recliner 23 drives the first connecting rod 21 to rotate. Compared with the driving device 25 being directly connected to the first connecting rod 21, on the one hand, the recliner 23 can be used as a force conversion point to convert the direct driving force of the motor into a force that is more suitable for the first connecting rod 21, thereby reducing the wear and damage to the first connecting rod 21 that may be caused by the direct force acting on the first connecting rod 21, thereby extending the life of the seat assembly 100. On the other hand, the use of the recliner 23 helps to reduce the momentum of the seat assembly 100 during the folding process, reduces unnecessary shaking and vibration of the first connecting rod 21 during movement, and improves the stability of the seat assembly 100 during the folding process and the reliability of the structure of the seat assembly 100.

[0047] In addition, since the recliner 23 itself has a locking function, no additional locking mechanism is required, which reduces the space occupied by the bottom of the seat assembly 100 and reduces the complexity of the entire seat assembly 100. At the same time, the recliner can withstand strong impact forces and loads, thereby improving the stability and reliability of the seat assembly during the folding process.

[0048] According to some embodiments of the present utility model, a first limiting portion 31 and a second limiting portion 32 are formed on the base 11. The first limiting portion 31 and the second limiting portion 32 are respectively arranged on both sides of the first connecting rod 21 in the rotation direction. A third limiting portion 33 is formed on the first connecting rod 21. When the seat cushion body 13 is folded to a certain position, the first limiting portion 31 abuts against the third limiting portion 33 to limit the movement of the first connecting rod 21 relative to the base 11, so that the seat cushion body 13 can maintain the folded state. When the seat cushion body 13 is in the unfolded state, the second limiting portion 32 abuts against the third limiting portion 33 to limit the movement of the first connecting rod 21 relative to the base 11, so that the seat cushion body 13 can be maintained in the unfolded state.

[0049] According to some embodiments of the present utility model, the first limiting portion 31 and the second limiting portion 32 are respectively configured as a first limiting pin and a second limiting pin. A protruding portion is formed on the side of the first connecting rod 21 away from the base 11 along the axis direction of the output shaft of the angle adjuster 23. When the first connecting rod 21 rotates driven by the output shaft of the angle adjuster 23, the protruding portion rotates around the axis of the output shaft of the angle adjuster 23 along with the first connecting rod 21. When the protruding portion contacts the first limiting pin or the second limiting pin, it will prevent the first connecting rod 21 from continuing to rotate in the same direction, thereby limiting the folding angle and position of the seat cushion body 13. When the seat cushion body 13 is folded to a certain position, the first limiting pin abuts against the third limiting portion 33 to limit the movement of the first connecting rod 21 relative to the base 11, so that the seat cushion body 13 can maintain the folded state. When the seat cushion body 13 is in the unfolded state, the second limiting pin abuts against the third limiting portion 33 to limit the movement of the first connecting rod 21 relative to the base 11, so that the seat cushion body 13 can be maintained in the unfolded state. The vehicle according to the present utility model is briefly described below.

[0050] The vehicle according to the present utility model is provided with the seat assembly 100 described in any one of the above embodiments. Since the vehicle according to the present utility model is provided with the seat assembly 100 described in any one of the above embodiments, the seat cushion body of the vehicle according to the present application can move forward while being turned up, reducing the interference between the seat cushion foam and the backrest 12 foam, without sacrificing the foam shape and thickness, and improving the riding comfort of the vehicle.

[0051] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", 5 "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0052] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more.

[0053] In the description of the present utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0054] In the description of the present utility model, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0055] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model.

[0056] In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0057] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A seat assembly, characterized in that, Comprising: A base (11), on which a backrest (12) protruding from the base (11) is provided; A first link (21) and a second link (22), one end of the first link (21) and one end of the second link (22) are respectively rotatably provided on the base (11); A seat cushion body (13), on which a first connection point (131) and a second connection point (132) are formed. The first connection point (131) is rotatably connected to the other end of the first link (21), and the second connection point (132) is rotatably connected to the other end of the second link (22). The first link (21) and the second link (22) rotate relative to the base (11) to drive the seat cushion body (13) to fold relative to the base (11); Wherein, the first link (21) and the second link (22) rotate in the direction of driving the seat cushion body (13) to fold, and the other end of the second link (22) is adapted to drive the seat cushion body (13) to move away from the backrest (12).

2. The seat assembly according to claim 1, wherein, The distance between the first connection point (131) and the second connection point (132) is less than the distance between one end of the first link (21) and one end of the second link (22).

3. The seat assembly according to claim 2, wherein, The seat cushion body (13) has a first end disposed close to the backrest (12) and a second end disposed away from the backrest (12). The second connection point (132) is disposed adjacent to the first end, and the distance between the second end and the first connection point (131) is greater than the distance between the first connection point (131) and the second connection point (132).

4. The seat assembly according to claim 3, wherein, The seat cushion body (13) includes an arc section that is close to the backrest (12) and bends towards the base (11), and the first connection point (131) and the second connection point (132) are provided on the arc section.

5. The seat assembly according to claim 3, wherein Further comprising: A driving device (25), the driving device (25) is connected to the first link (21) or the second link (22), and the driving device (25) is adapted to drive the first link (21) to rotate to drive the second link (22) to rotate or drive the second link (22) to rotate to drive the first link (21) to rotate.

6. The seat assembly according to claim 5, characterized in that, Further comprising: A connecting rod (24), the connecting rod (24) is provided on the base (11), one end of the connecting rod (24) is connected to the driving device (25), and the other end of the connecting rod (24) is connected to the first link (21). The driving device is adapted to drive the connecting rod (24) to rotate to drive the first link (21) to rotate.

7. The seat assembly according to claim 6, characterized in that, Further comprising: An angle adjuster (23), the angle adjuster being connected to the first connecting rod (21). Two angle adjusters (23) are provided, and the two angle adjusters (23) are respectively arranged on both sides in the width direction of the base (11). One of the angle adjusters is connected to one end of the connecting rod, and the other angle adjuster (23) is connected to the other end of the connecting rod (24). The driving device (25) drives the connecting rod (24) to rotate so as to drive the two angle adjusters (23) to rotate synchronously.

8. The seat assembly according to claim 7, wherein, A first limiting portion (31) and a second limiting portion (32) are formed on the base (11). The first limiting portion (31) and the second limiting portion (32) are respectively arranged on both sides of the first connecting rod (21) in the rotation direction. A third limiting portion (33) is formed on the first connecting rod (21), and the third limiting portion (33) cooperates with the first limiting portion (31) and the second limiting portion (32) respectively to limit the movement of the first connecting rod (21) relative to the base (11).

9. The seat assembly according to claim 8, characterized in that, The first limiting portion (31) and the second limiting portion (32) are respectively configured as a first limiting pin and a second limiting pin. A protruding portion is formed on the side of the first connecting rod (21) away from the base (11) along the axis direction of the output shaft of the angle adjuster. The protruding portion abuts against the first limiting pin and the second limiting pin respectively to limit the movement of the first connecting rod (21) relative to the base (11) in the circumferential direction of the output shaft of the angle adjuster.

10. A vehicle, characterized in that, Comprising the seat assembly according to any one of claims 1-9.

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