Seat assembly of vehicle and vehicle

Abstract

The invention discloses a seat assembly of a vehicle and the vehicle, and relates to the technical field of vehicles, the seat assembly comprises a seat framework and a first driving part; the supporting assembly comprises a seat cushion supporting piece, a first backrest supporting piece and a second backrest supporting piece, the seat framework comprises a seat cushion framework and a backrest framework which are connected, the seat cushion supporting piece is rotatably connected with the seat cushion framework, and the first backrest supporting piece is rotatably connected with the backrest framework; the second backrest supporting piece is rotatably connected with the seat cushion supporting piece and is slidably connected with the first backrest supporting piece; the air bag is arranged between the seat cushion supporting piece and the seat cushion framework, and the air bag is used for driving the supporting assembly to act. By arranging the air bag and the supporting assembly, when the seat is collided in the lying posture state, the air bag drives the supporting assembly to act, the seat assembly can drive a passenger to rapidly recover the normal sitting posture, protection is achieved through a conventional safety belt and a safety air bag, and the risk that the passenger slides out of the seat and collides with a vehicle interior secondarily is reduced; and the safety of the vehicle is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a seat assembly of a vehicle and a vehicle with the seat assembly. BACKGROUND

[0002] In the related art, when the vehicle seat is in a lying position, the backrest and the cushion are in the same horizontal line, and the restraining effect of the seat on the occupant is almost zero. In a very short time after the collision, the occupant will slide out of the seat and collide with the vehicle interior again due to the lack of restraint, threatening the life and health safety of the occupant. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a seat assembly of a vehicle, which can quickly restore the normal sitting posture of the occupant when the seat is in a lying position and collides, thereby reducing the risk of the occupant sliding out of the seat and colliding with the vehicle interior again.

[0004] The present application further provides a vehicle.

[0005] The seat assembly of the vehicle according to the present application comprises a seat framework, a first driving member, the seat framework being rotatably arranged on a vehicle body of the vehicle, and the first driving member being used to drive the seat framework to rotate around a first axis; a support assembly, the support assembly comprising a cushion support member, a first backrest support member, and a second backrest support member; the seat framework comprising a cushion framework and a backrest framework, the cushion framework being connected with the backrest framework, the cushion support member being rotatably connected with the cushion framework, the first backrest support member being rotatably connected with the backrest framework, and the second backrest support member being rotatably connected with the cushion support member and slidably connected with the first backrest support member; and an airbag, the airbag being arranged between the cushion support member and the cushion framework, and being used to drive the support assembly to act.

[0006] The seat assembly of the vehicle according to the present application, by arranging the airbag and the support assembly, when the seat is in a lying position and collides, the airbag drives the support assembly to act, so that the seat assembly can quickly restore the normal sitting posture of the occupant, thereby relying on the conventional safety belt and airbag for protection, reducing the risk of the occupant sliding out of the seat and colliding with the vehicle interior again, and improving the safety of the vehicle.

[0007] In some examples of the present application, the front end of the cushion support member is rotatably connected with the cushion framework along the length direction of the vehicle.

[0008] In some examples of the present application, the seat assembly further comprises: a control valve, the air bag is formed with a deflation hole, the control valve is arranged at the deflation hole, and the control valve is configured to control the deflation hole to be opened to deflate when the vehicle state triggers a preset condition.

[0009] In some examples of the present application, the control valve comprises: a switch piece, a magnetic piece, and an elastic piece, the elastic piece is connected between the switch piece and the seat cushion framework, the magnetic piece is configured to attract the switch piece in an energized state to make the switch piece block the deflation hole and make the elastic piece be compressed, and the magnetic piece is further configured to be de-energized when the vehicle state triggers the preset condition to make the elastic piece drive the switch piece to move to open the deflation hole.

[0010] In some examples of the present application, the switch piece comprises: a first sub-piece and a second sub-piece, the first sub-piece is connected with the second sub-piece, the cross-sectional area of the first sub-piece is greater than that of the second sub-piece, the first sub-piece is arranged in the air bag, the second sub-piece is arranged through the deflation hole, and the elastic piece is connected between the first sub-piece and the seat cushion framework.

[0011] In some examples of the present application, the elastic piece is sleeved on the second sub-piece.

[0012] In some examples of the present application, the preset condition is triggered when the vehicle collides.

[0013] In some examples of the present application, the second back support piece is telescopically connected with the first back support piece.

[0014] In some examples of the present application, the second back support piece and the first back support piece jointly define a hydraulic oil cavity, and hydraulic oil is arranged in the hydraulic oil cavity.

[0015] The vehicle according to the present application comprises the seat assembly of the vehicle of the above-mentioned embodiments.

[0016] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above-mentioned and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings. Figure 1 is a structural schematic diagram of a seat assembly according to an embodiment of the present application; Figure 2 is a structural schematic diagram of an air bag, a seat cushion support piece, and a seat cushion framework according to an embodiment of the present application; Figure 3 is a structural schematic diagram of a control valve according to an embodiment of the present application.

[0018] Reference Signs: seat assembly 100; seat frame 1; seat cushion frame 11; backrest frame 12; support assembly 2; seat cushion support 21; first backrest support 22; second backrest support 23; air bag 3; air hole 31; control valve 4; switch member 41; first sub-member 411; second sub-member 412; magnetic member 42; elastic member 43. DETAILED DESCRIPTION

[0019] Embodiments of the present application are described below in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application.

[0020] Reference is made below Figures 1-3 to describe a seat assembly 100 of a vehicle according to an embodiment of the present application.

[0021] As Figures 1-3 shown, the seat assembly 100 of the vehicle according to the present application includes: a seat frame 1, a first driving member, the seat frame 1 is rotatably provided on a vehicle body of the vehicle, the first driving member is used to drive the seat frame 1 to rotate around a first axis; a support assembly 2, the support assembly 2 includes: a seat cushion support 21, a first backrest support 22, a second backrest support 23, the seat frame 1 includes: a seat cushion frame 11 and a backrest frame 12, the seat cushion frame 11 is connected with the backrest frame 12, the seat cushion support 21 is rotatably connected with the seat cushion frame 11, the first backrest support 22 is rotatably connected with the backrest frame 12, the second backrest support 23 is rotatably connected with the seat cushion support 21 and slidably connected with the first backrest support 22; an air bag 3, the air bag 3 is provided between the seat cushion support 21 and the seat cushion frame 11, the air bag 3 is used to drive the support assembly 2 to act.

[0022] As some embodiments of the present application, the first driving member can be configured as an electric motor. The seat frame 1 is rotatably arranged on a vehicle body of a vehicle, and the first driving member is configured to drive the seat frame 1 to rotate about a first axis, which is parallel to the width direction of the vehicle. The support assembly 2 includes a seat cushion support 21, a first backrest support 22, and a second backrest support 23, and the seat frame 1 includes a seat cushion frame 11 and a backrest frame 12. As some embodiments of the present application, the seat cushion frame 11 and the backrest frame 12 are connected by welding. As some embodiments of the present application, the seat cushion frame 11 and the backrest frame 12 are integrally formed.

[0023] The seat cushion support 21 is rotatably connected to the seat cushion frame 11. As some embodiments of the present application, the seat cushion support 21 is hingedly connected to the seat cushion frame 11. As some embodiments of the present application, the seat cushion support 21 is rotatably connected to the seat cushion frame 11 by a pin. The first backrest support 22 is rotatably connected to the backrest frame 12. As some embodiments of the present application, the first backrest support 22 is hingedly connected to the backrest frame 12. As some embodiments of the present application, the first backrest support 22 is rotatably connected to the backrest frame 12 by a pin.

[0024] The second backrest support 23 is rotatably connected to the seat cushion support 21 and slidably connected to the first backrest support 22. As some embodiments of the present application, the second backrest support 23 is rotatably connected to the seat cushion support 21 by a hinge or a pin. As some embodiments of the present application, the second backrest support 23 is formed with a cavity, and the first backrest support 22 can slide in the cavity along the extension direction of the cavity. As some embodiments of the present application, the second backrest support 23 and the first backrest support 22 are in sliding pair relationship, so that the second backrest support 23 is slidably connected to the first backrest support 22.

[0025] The air bag 3 is arranged between the seat cushion support 21 and the seat cushion frame 11, and the air bag 3 is configured to drive the support assembly 2 to act. As some embodiments of the present application, the air bag 3 is made of rubber material with good air tightness and toughness. When the air bag 3 is inflated, the air bag 3 supports and drives the seat cushion support 21 to rotate away from the seat cushion frame 11, and in turn drives the second backrest support 23 and the first backrest support 22 to act, so that the seat cushion support 21, the second backrest support 23, and the first backrest support 22 are on the same plane at the side surface facing the occupant, and at this time the seat is in a lying position, so as to facilitate the occupant to lie down and rest.

[0026] When the airbag 3 is in the deflation process, the airbag 3 cancels the support to the seat cushion support 21, the seat cushion support 21 rotates close to the seat cushion framework 11, and in turn drives the second back support 23 and the first back support 22 to act, at this time the seat returns to the sitting posture state, the conventional safety belt and the airbag 3 can normally protect the passenger, reduce the risk of the passenger sliding out of the seat and colliding with the vehicle interior when the vehicle collides, and effectively improve the safety of the vehicle.

[0027] Specifically, in the normal running state of the vehicle, when the passenger is tired, the seat assembly 100 can be adjusted to the lying posture state. At this time, the airbag 3 is inflated, and the airbag 3 can gradually support and drive the seat cushion support 21 to rotate away from the seat cushion framework 11, and drive the second back support 23 and the first back support 22 to act. At this time, at least part of the first back support 22 slides inside the cavity along the extension direction of the cavity to the inside of the cavity, so that the seat cushion support 21, the second back support 23 and the first back support 22 smoothly lie on the same plane on the side surface of the passenger.

[0028] It should be noted that during the adjustment of the seat assembly 100 to the lying posture state, the first driving member drives the seat framework 1 to rotate, so that the end of the seat cushion framework 11 and the backrest framework 12 away from each other, the seat cushion support 21, the second back support 23 and the first back support 22 are or approximately horizontally on the side surface of the passenger, so as to facilitate the passenger to lie down and rest.

[0029] If the seat assembly 100 collides in the lying posture state, the vehicle will take corresponding action, the first driving member synchronously drives the seat framework 1 to rotate back to the original posture, the airbag 3 deflates and gradually cancels the support to the seat cushion support 21, the seat cushion support 21 rotates close to the seat cushion framework 11, and in turn drives the second back support 23 and the first back support 22 to act. At this time, at least part of the first back support 22 slides inside the cavity along the extension direction of the cavity to the outside of the cavity, until the seat cushion support 21 rotates to abut against the seat cushion framework 11, and the second back support 23 and the first back support 22 abut against the backrest framework 12, so that the seat returns to the sitting posture state.

[0030] It should be noted that during this transformation process, the seat assembly 100 will drive the passenger to return to the sitting posture state, and the human body will not change the posture greatly, the movement amplitude of the viscera and trunk is small, the corresponding damage is small, and the deflation of the airbag 3 will consume part of the potential energy of the human body, further improving the protection effect of the seat on the human body. After returning to the sitting posture state, the conventional safety belt and the airbag 3 can normally protect the passenger, reduce the risk of the passenger sliding out of the seat and colliding with the vehicle interior when the vehicle collides, and effectively improve the safety of the vehicle.

[0031] Therefore, by arranging the airbag 3 and the support assembly 2, when the seat is in a lying position and collides, the airbag 3 drives the support assembly 2 to act, so that the seat assembly 100 drives the passenger to quickly recover to a normal sitting position, thereby relying on the conventional seat belt and the airbag 3 for protection, reducing the risk of the passenger sliding out of the seat and colliding with the vehicle interior, and improving the safety of the vehicle.

[0032] In some examples of the present application, as shown in Figure 1 The front end of the seat cushion support 21 is rotatably connected to the seat cushion framework 11 along the length direction of the vehicle.

[0033] The front end of the seat cushion support 21 is rotatably connected to the seat cushion framework 11 along the length direction of the vehicle, i.e., the X direction of the vehicle. As some embodiments of the present application, the front end of the seat cushion support 21 is rotatably connected to the seat cushion framework 11 through a hinge. As some embodiments of the present application, the front end of the seat cushion support 21 is rotatably connected to the seat cushion framework 11 through a latch. In this way, the connection position of the seat cushion support 21 and the seat cushion framework 11 can be reasonably arranged, which is conducive to the front end of the seat cushion framework 11, the seat cushion support 21, the second back support 23 and the first back support 22 to form a horizontal plane or substantially a horizontal plane on the side surface facing the passenger, so as to facilitate the passenger to lie down smoothly and improve the comfort of the passenger.

[0034] In some examples of the present application, as shown in Figures 2-3 The seat assembly 100 can further include a control valve 4. The airbag 3 is formed with a gas discharge hole 31, and the control valve 4 is arranged at the gas discharge hole 31. The control valve 4 is configured to control the gas discharge hole 31 to open to discharge gas when a preset condition is triggered by the state of the vehicle.

[0035] The airbag 3 is formed with a gas discharge hole 31, and the gas discharge hole 31 can be provided as at least one, for example, one, two or more. The present application takes four gas discharge holes 31 as an example for illustration. In this way, the risk of slow discharge caused by too few gas discharge holes 31 can be reduced, and the risk of reduced reliability of the airbag 3 caused by too many gas discharge holes 31 can be reduced. As some embodiments of the present application, the diameter of the gas discharge hole 31 can be about 50 mm. Under the action of four 50 mm gas discharge holes 31, the airbag 3 can complete the discharge within 15 ms. The control valve 4 is arranged at the gas discharge hole 31, and the control valve 4 can be provided as at least one, for example, one, two or more.

[0036] It can be understood that the at least one air vent 31 corresponds to the at least one control valve 4 one by one, that is, one air vent 31 corresponds to one control valve 4. The control valve 4 is configured to control the air vent 31 to be opened to deflate when the vehicle state triggers the preset condition. As some embodiments of the present application, the vehicle state triggering the preset condition is that the vehicle is in a collision. As some embodiments of the present application, the vehicle state triggering the preset condition is that the occupant manually operates the control seat assembly 100 to change from a lying position state to a sitting position state. By setting the air vent 31 and the control valve 4, when the vehicle state triggers the preset condition, the control valve 4 controls the air vent 31 to be opened, which facilitates the discharge of the gas in the airbag 3, thereby realizing the change of the seat assembly 100 from the lying position state to the sitting position state.

[0037] In some examples of the present application, as shown in Figure 3 The control valve 4 can include a switch piece 41, a magnetic piece 42, and an elastic piece 43, the elastic piece 43 is connected between the switch piece 41 and the seat cushion framework 11, the magnetic piece 42 is configured to attract the switch piece 41 in the energized state to make the switch piece 41 block the air vent 31 and make the elastic piece 43 be compressed, and the magnetic piece 42 is also configured to be de-energized when the vehicle state triggers the preset condition to make the elastic piece 43 drive the switch piece 41 to move to open the air vent 31.

[0038] As some embodiments of the present application, the elastic piece 43 can be configured as a spring. As some embodiments of the present application, the elastic piece 43 can be configured as a spring piece. As some embodiments of the present application, in the extension direction of the elastic piece 43, one end of the elastic piece 43 can be fixedly connected with or abut against the seat cushion framework 11, and at least part of the elastic piece 43 can be fixedly connected with the switch piece 41, so that the elastic piece 43 is connected between the switch piece 41 and the seat cushion framework 11. In the energized state, the magnetic piece 42 can attract the switch piece 41 to make the switch piece 41 block the air vent 31, and the energization of the magnetic piece 42 can make the elastic piece 43 be compressed, at this time, the airbag 3 is in the inflated state, until the airbag 3 is full, and the seat assembly 100 is in the lying position state.

[0039] When the vehicle state triggers the preset condition, the magnetic piece 42 is de-energized. As some embodiments of the present application, the de-energization of the magnetic piece 42 can be completed within 0-5 ms. The elastic piece 43 extends and drives the fixedly connected switch piece 41 to move to open the air vent 31 under the action of its own elastic force, the gas in the airbag 3 is quickly discharged through the opened air vent 31 under the pressure of the occupant, and the de-energization of the magnetic piece 42 to the completion of the deflation of the airbag 3 is 20 ms, which realizes the change of the seat assembly 100 from the lying position state to the sitting position state, guarantees that the seat assembly 100 quickly provides restraint for the occupant during the collision, reduces the risk of secondary collision of the occupant with the interior decoration after the occupant separates from the seat, and the deflation of the airbag 3 also relieves the impact energy of the occupant, so that the occupant can control his movement posture while changing his posture, and reduce the pressure on the spine of the occupant.

[0040] In some examples of the present application, as shown in Figures 2-3 The switch piece 41 can include a first sub-piece 411 and a second sub-piece 412, the first sub-piece 411 is connected with the second sub-piece 412, the cross-sectional area of the first sub-piece 411 is larger than that of the second sub-piece 412, the first sub-piece 411 is arranged in the airbag 3, the second sub-piece 412 is arranged in the air hole 31, and the elastic piece 43 is located between the first sub-piece 411 and the seat cushion framework 11.

[0041] In some examples of the present application, the first sub-piece 411 and the second sub-piece 412 are integrally formed. In some examples of the present application, the first sub-piece 411 and the second sub-piece 412 are connected by bonding. The first sub-piece 411 is arranged in the airbag 3, the second sub-piece 412 is arranged in the air hole 31, and the cross-sectional area of the first sub-piece 411 is larger than that of the second sub-piece 412. In this way, the structure of the switch piece 41 can be reasonably designed, which is conducive to the reciprocating movement of the second sub-piece 412 in the air hole 31, thereby driving the first sub-piece 411 to open or close the air hole 31.

[0042] In some examples of the present application, along the extension direction of the elastic piece 43, one end of the elastic piece 43 can be fixedly connected with or abut against the seat cushion framework 11, and at least part of the elastic piece 43 can be fixedly connected with the second sub-piece 412, so that the elastic piece 43 is located between the first sub-piece 411 and the seat cushion framework 11. In the energized state, the magnetic piece 42 can attract the switch piece 41, so that the first sub-piece 411 blocks the air hole 31, and the elastic piece 43 is compressed. At this time, the airbag 3 is in an inflated state, and the seat assembly 100 is in a lying state.

[0043] When the vehicle state triggers a preset condition, the magnetic piece 42 is de-energized. The elastic piece 43 extends under the action of its own elastic force and drives the second sub-piece 412 to move to open the air hole 31, and the gas in the airbag 3 is quickly discharged through the opened air hole 31 under the pressure of the occupant, realizing the transition of the seat assembly 100 from the lying state to the sitting state.

[0044] In some examples of the present application, as shown in Figure 3 The elastic piece 43 is sleeved on the second sub-piece 412.

[0045] The elastic member 43 is sleeved on the second sub-portion 412, and further, the inner peripheral wall of the at least partial elastic member 43 is fixedly connected with the outer peripheral wall of the at least partial second sub-portion 412, so that when the magnetic member 42 is in the energized state and the magnetic member 42 attracts the switch member 41, the second sub-portion 412 drives the elastic member 43 to be compressed. When the magnetic member 42 is de-energized, the elastic member 43 can extend under the action of its own elastic force, thereby smoothly driving the second sub-portion 412 to move to open the air vent 31, and the gas in the air bag 3 is quickly discharged through the opened air vent 31 under the pressure of the occupant, so as to realize the smooth transition of the seat assembly 100 between the lying state and the sitting state.

[0046] In some examples of the present application, the preset condition is triggered when the vehicle collides.

[0047] When the vehicle collides, the preset condition is triggered, the magnetic member 42 is de-energized, the elastic member 43 extends under the action of its own elastic force and drives the fixedly connected switch member 41 to move to open the air vent 31, the gas in the air bag 3 is quickly discharged through the opened air vent 31 under the pressure of the occupant, so as to realize the transition of the seat assembly 100 from the lying state to the sitting state, and ensure that the seat assembly 100 quickly provides restraint for the occupant during the collision of the vehicle, thereby reducing the risk of secondary collision between the occupant and the interior decoration when the occupant separates from the seat.

[0048] In some examples of the present application, as shown in Figure 1 The second backrest support 23 is telescopically connected with the first backrest support 22.

[0049] As some embodiments of the present application, the second backrest support 23 is formed with a cavity, and the first backrest support 22 can slide in the cavity along the extension direction of the cavity. As some embodiments of the present application, the second backrest support 23 is formed with a slide rail, and the first backrest support 22 is provided with a pulley, which can move on the slide rail along the extension direction of the slide rail, so that the second backrest support 23 is telescopically connected with the first backrest support 22. In this way, the design of the second backrest support 23 and the first backrest support 22 is reasonable, which is conducive to the smooth operation of the support assembly 2, so that the seat assembly 100 can smoothly transition between the lying state and the sitting state.

[0050] In some examples of the present application, the second backrest support 23 and the first backrest support 22 jointly define a hydraulic oil cavity, and the hydraulic oil cavity is provided with hydraulic oil.

[0051] The second back support 23 and the first back support 22 are telescopically connected by the hydraulic oil cavity defined by the second back support 23 and the first back support 22, and the hydraulic oil in the hydraulic oil cavity, and the hydraulic operation is stable, and the risk of the hydraulic oil cavity cracking caused by the multiple telescopic cooperation of the second back support 23 and the first back support 22 is reduced, thereby improving the use safety of the vehicle. Further, the hydraulic oil has a lubricating effect, which can reduce the risk of the second back support 23 or the first back support 22 being stuck, improve the use comfort of the seat assembly 100, and the hydraulic oil can also reduce the risk of rusting at the cooperation position of the second back support 23 and the first back support 22, thereby prolonging the service life of the support assembly 2.

[0052] The vehicle according to the present application includes the seat assembly 100 of the vehicle of the above-mentioned embodiments. By arranging the air bag 3 and the support assembly 2, when the seat is in a lying position and a collision occurs, the air bag 3 drives the support assembly 2 to act, so that the seat assembly 100 drives the occupant to quickly recover to a normal sitting position, thereby relying on the conventional safety belt and the safety air bag 3 for protection, reducing the risk of the occupant sliding out of the seat and colliding with the vehicle interior, and improving the safety of the vehicle.

[0053] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0054] In the description of the present application, "first feature" and "second feature" can include one or more of the features.

[0055] In the description of the present application, "a plurality of" means two or more.

[0056] In the description of the present application, "above" or "below" the first feature of the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.

[0057] In the description of the present application, "above", "above" and "above" of the first feature of the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height.

[0058] In the description of the specification, reference to "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" means that a particular feature, structure, material or characteristic is included in at least one embodiment or example of the present application. The appearances of the phrases "in one embodiment", "in some embodiments", "in an embodiment", "for example", "specific example" or "in some examples" in various places in the specification are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0059] Although embodiments of the present application have been shown and described, it would be appreciated by those skilled in the art that changes, modifications, alternatives and variations to these embodiments could be made without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A seating assembly for a vehicle, characterized by, The seat assembly comprises: a seat framework rotatably arranged on a vehicle body of the vehicle, and a first driving member configured to drive the seat framework to rotate about a first axis; a support assembly comprising a seat cushion support, a first backrest support, and a second backrest support, the seat framework comprising a seat cushion framework and a backrest framework, the seat cushion framework being connected to the backrest framework, the seat cushion support being rotatably connected to the seat cushion framework, the first backrest support being rotatably connected to the backrest framework, and the second backrest support being rotatably connected to the seat cushion support and slidably connected to the first backrest support; an air bag arranged between the seat cushion support and the seat cushion framework, the air bag being configured to drive the support assembly to act.

2. The seating assembly of claim 1, wherein, A front end of the seat cushion support is rotatably connected to the seat cushion framework along a length direction of the vehicle.

3. The seating assembly of claim 1, wherein The seat assembly further comprises: a control valve arranged at a deflation hole of the air bag, the control valve being configured to control the deflation hole to be opened to deflate when a preset condition is triggered by a vehicle state.

4. The seating assembly of claim 3, wherein, The control valve comprises a switch member, a magnetic member, and an elastic member, the elastic member being connected between the switch member and the seat cushion framework, the magnetic member being configured to attract the switch member in an energized state to make the switch member block the deflation hole and compress the elastic member, and the magnetic member being configured to be de-energized when the preset condition is triggered by the vehicle state to make the elastic member drive the switch member to move to open the deflation hole.

5. The seating assembly of claim 4, wherein, The switch member comprises a first sub-portion and a second sub-portion, the first sub-portion being connected to the second sub-portion, a cross-sectional area of the first sub-portion being greater than that of the second sub-portion, the first sub-portion being arranged in the air bag, and the second sub-portion being arranged in the deflation hole, the elastic member being connected between the first sub-portion and the seat cushion framework.

6. The seating assembly of claim 5, wherein, The elastic member is sleeved on the second sub-portion.

7. The seating assembly of claim 3, wherein, The preset condition is triggered when the vehicle is in a collision.

8. The seating assembly of claim 1, wherein, The second backrest support is slidably connected to the first backrest support.

9. The seating assembly of claim 8, wherein, The second backrest support and the first backrest support jointly define a hydraulic oil cavity, and the hydraulic oil cavity is filled with hydraulic oil.

10. A vehicle characterized by comprising: The seat assembly of the vehicle according to any one of claims 1-9.

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