Seat assembly and vehicle

Abstract

The utility model relates to the field of vehicle accessories, and discloses a seat assembly and a vehicle. The seat assembly comprises a base assembly, a backrest assembly and an angle adjuster, the base assembly is connected with the backrest assembly through the angle adjuster, the angle adjuster is provided with an input end, and the angle adjuster can respond to power input of the input end to drive the backrest assembly to rotate relative to the base assembly; the gas generator is in transmission connection with the input end through the transmission assembly, the gas generator can generate gas in response to the alarm signal, and power of the gas is transmitted to the input end through the transmission assembly so as to drive the input end to rotate. Gas generated by the gas generator transmits power to the input end through the transmission assembly so as to drive the input end to rotate. The input end rotates to enable the angle adjuster to drive the backrest assembly to incline backwards relative to the base assembly, so that a passenger inclines backwards to be separated from the upper portion of the automobile body and located in a threshold area with large rigidity, and a better protection effect is provided for the passenger through a threshold.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle accessory technical field, concretely relates to seat assembly and vehicle. BACKGROUND

[0002] In today's society, automobile safety technology has become an extremely important link in vehicle design and manufacturing. With the progress of science and technology and the increasing emphasis on life safety, more and more innovative technologies are applied to improve the safety performance of automobiles.

[0003] In a side impact accident, due to the small distance between the occupant and the door panel or B column, the door panel or B column intrudes quickly, which easily causes serious injury to the occupant's shoulder and chest. In order to solve the above problem, the related technology protects the side of the occupant through the side airbag installed on the side of the seat.

[0004] However, although the design of the side airbag provides additional protection to some extent, in some cases, such as when the collision side arm is on the side of the body, the arm may exert a large pressure on the ribs when subjected to a strong impact, resulting in a fracture or other serious injury. SUMMARY

[0005] Therefore, the utility model provides a seat assembly and vehicle to solve or improve the problem that the arm may exert a large pressure on the ribs when subjected to a strong impact.

[0006] In a first aspect, the utility model provides a seat assembly, comprising:

[0007] a base assembly, a backrest assembly and an angle adjuster, the base assembly is connected with the backrest assembly through the angle adjuster, the angle adjuster has an input end, and the angle adjuster can drive the backrest assembly to rotate relative to the base assembly in response to the power input of the input end;

[0008] a gas generator and a transmission assembly, the gas generator is transmissionally connected with the input end through the transmission assembly, the gas generator can generate gas in response to an alarm signal, and the power of the gas is transmitted to the input end through the transmission assembly to drive the input end to rotate, and the direction of the rotation of the input end makes the backrest assembly recline.

[0009] In an optional embodiment, the transmission assembly comprises a transmission shaft, the gas generator is connected with the input end through the transmission shaft, and the gas generator is used to drive the transmission shaft to rotate.

[0010] In an alternative embodiment, the seat assembly further comprises a rotation driving device, which is mounted on the backrest assembly and connected with the transmission shaft, and is used to drive the transmission shaft to rotate.

[0011] Alternatively, the number of the angle adjusters is set to be at least two, the at least two angle adjusters are coaxially arranged, and the at least two angle adjusters are connected with the backrest assembly and the base assembly, and the transmission shaft is connected with the input end of each of the angle adjusters.

[0012] In an alternative embodiment, the rotation driving device is connected with the transmission shaft through a normally open clutch.

[0013] Alternatively, the transmission shaft is a spline shaft, the rotation driving device is connected with the transmission shaft through an internal spline sleeve, and the internal spline sleeve is used to be broken and failed during the process that the gas generator drives the transmission shaft to rotate.

[0014] In an alternative embodiment, the transmission assembly further comprises a cylinder, a push rod and a linear-to-rotary mechanism.

[0015] The cylinder is connected with the backrest assembly or the base assembly, one end of the push rod is slidably inserted into the cylinder and forms a pressure cavity with the cylinder, the push rod is drivingly connected with the transmission shaft through the linear-to-rotary mechanism, and is used to drive the transmission shaft to rotate through the linear-to-rotary mechanism.

[0016] The gas generator is connected with the pressure cavity and is used to release gas to the pressure cavity.

[0017] In an alternative embodiment, the linear-to-rotary mechanism further comprises a gear and a rack.

[0018] The gear is sleeved on the transmission shaft, and the rack is connected with the push rod and is used to be engaged with the gear.

[0019] In an alternative embodiment, the linear-to-rotary mechanism further comprises a flexible member, one end of the flexible member is connected with the transmission shaft, the flexible member is wound around the transmission shaft, and the other end of the flexible member is connected with the push rod.

[0020] In an alternative embodiment, the side part of the backrest assembly is provided with a side airbag.

[0021] Alternatively, a safety belt upper end fixing point is arranged on the backrest assembly.

[0022] In a second aspect, the utility model further provides a vehicle comprising the seat assembly.

[0023] In an optional embodiment, the vehicle includes a collision sensor, which is provided on a side of the vehicle, the collision sensor being electrically connected to the gas generator and configured to send an alarm signal to the gas generator;

[0024] And / or, the vehicle includes a control system, which is electrically connected to the gas generator and is used to send an alarm signal to the gas generator.

[0025] In this seat assembly, before or during a side impact, an alarm signal triggers a gas generator to generate gas. This gas then transmits power to the input end through a transmission assembly, driving the input end to rotate. This rotation of the input end causes the recliner to tilt the backrest assembly rearward relative to the base assembly, allowing the occupant to tilt backward, away from the upper body, and into the more rigid threshold area. This provides better protection for the occupant through the threshold, preventing the door panel or B-pillar from squeezing the occupant's arms or ribs in a side impact.

[0026] The vehicle provided by the present invention includes the seat assembly provided by the present invention, and thus includes all the above advantages of the seat assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 A schematic structural diagram of a first seat assembly provided by an embodiment of the present utility model;

[0029] Figure 2 for Figure 1 A schematic structural diagram of the transmission component of the seat assembly shown;

[0030] Figure 3 This is a schematic structural diagram of a second seat assembly provided in an embodiment of the present utility model;

[0031] Figure 4 for Figure 3 A schematic structural diagram of the transmission component of the seat assembly shown;

[0032] Figure 5 for Figure 4 a top view of the view shown;

[0033] Figure 6 for Figure 3Side view of the seat assembly shown.

[0034] Description of reference numerals:

[0035] 1. Base assembly; 2. Backrest assembly; 3. Recliner; 4. Gas generator; 5. Transmission assembly; 501. Transmission shaft; 502. Cylinder; 503. Push rod; 504. Gear; 505. Rack; 506. Flexible part; 6. Rotation drive device; 7. Fixed rod. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0037] In the related art, although the side airbags of the seat assembly can provide additional protection to a certain extent, in some cases, the door panels or B-pillars act on the side airbags when they intrude, causing the side airbags to squeeze the arms, and the arms may exert greater pressure on the ribs, resulting in fractures or other serious injuries.

[0038] In order to solve or improve the problem that the arms may exert greater pressure on the ribs when subjected to a strong impact, an embodiment of the present invention provides a seat assembly and a vehicle.

[0039] The following combination Figures 1 to 6 , describing the seat assembly provided in an embodiment of the present invention.

[0040] Specifically, the seat assembly includes a base assembly 1 , a backrest assembly 2 , a recliner 3 , a gas generator 4 and a transmission assembly 5 .

[0041] The base assembly 1 is arranged on the floor of the vehicle compartment. The backrest assembly 2 is connected to the base assembly 1 through the angle adjuster 3. The angle adjuster 3 has an input end, and the angle adjuster 3 drives the backrest assembly 2 to rotate relative to the base assembly 1 in response to the power input of the input end. Optionally, the angle adjuster 3 can be an electric angle adjuster. For example, the angle adjuster 3 is also called a car seat angle adjuster, which is a conventional product in the field of vehicles. The angle adjuster 3 mainly drives a group of wedge blocks to move in the circumferential direction by rotating the core shaft, driving the driving piece to rotate, and driving the cam to rotate, so as to realize the function of the backrest assembly 2 to flip forward and backward. When the core shaft stops rotating, the group of wedge blocks reach a self-locking state, and at this time, the angle adjuster 3 is in a stop locking state. It should be noted that the present application does not involve the structural improvement of the angle adjuster 3, and therefore will not be described here.

[0042] The gas generator 4 is in driving connection with the input end through the transmission assembly 5. The gas generator 4 can generate gas in response to the alarm signal, and transmit the power of the gas to the input end through the transmission assembly 5 to drive the input end to rotate. Optionally, the alarm signal can be a passive alarm signal from a collision sensor, or an active alarm signal from a control system. The direction in which the gas generator 4 drives the input end to rotate makes the backrest assembly 2 to recline. It should be noted that the gas generator 4 is a conventional product in the field of vehicles, and the present application does not involve the improvement of the gas generator 4, and therefore will not be described here.

[0043] In the embodiment, before or at the time of the side collision accident, the alarm signal triggers the gas generator 4 to generate gas. The gas transmits power to the input end through the transmission assembly 5 to drive the input end to rotate. The rotation of the input end drives the angle adjuster 3 to drive the backrest assembly 2 to recline relative to the base assembly 1, so that the occupant reclines to be away from the upper part of the vehicle body and is in the area of the door sill with greater stiffness, thereby providing better protection for the occupant through the door sill, preventing the door panel or B pillar from causing extrusion to the arms or ribs of the occupant due to side collision.

[0044] In some embodiments of the utility model, the transmission assembly 5 includes a transmission shaft 501. The gas generator 4 is connected with the input end through the transmission shaft 501, and the gas generator 4 is used to drive the transmission shaft 501 to rotate. That is, the gas generator 4, the transmission shaft 501 and the input end are in driving connection in sequence. For example, the transmission shaft 501 can be arranged as a spline shaft, and the input end is provided with an internal spline. The transmission shaft 501 penetrates into the internal spline of the input end to form a key connection with the input end.

[0045] In the embodiment, the transmission shaft 501 is used for connection and transition. On the one hand, the gas generator 4 transmits power to the angle adjuster 3 through the transmission shaft 501. On the other hand, it is convenient to arrange the position of the gas generator 4 along the transmission shaft 501 more flexibly.

[0046] In some embodiments provided by the utility model, the seat assembly further comprises a rotating driving device 6. Optionally, the rotating driving device 6 comprises a motor and a speed reducer, and the speed reducer is in transmission connection with the motor.

[0047] The rotating driving device 6 is installed on the backrest assembly 2 and connected with the transmission shaft 501, and the rotating driving device 6 is used for driving the transmission shaft 501 to rotate. Optionally, the motor and the speed reducer are both installed on the backrest assembly 2, and the output end of the speed reducer is sleeved on the transmission shaft 501, so as to drive the transmission shaft 501 to rotate.

[0048] In the embodiment, the angle of the backrest assembly 2 can be adjusted through the rotating driving device 6, without manually operating the transmission shaft 501, so as to reduce the labor intensity of the passenger and improve the convenience of angle adjustment of the seat assembly.

[0049] In some embodiments provided by the utility model, the number of the angle adjuster 3 is at least two. The at least two angle adjusters 3 are coaxially arranged, and the at least two angle adjusters 3 are both connected with the backrest assembly 2 and the base assembly 1. The transmission shaft 501 is connected with the input end of each angle adjuster 3, for example, the transmission shaft 501 sequentially passes through the input end of each angle adjuster 3 and is in key connection with each input end.

[0050] In the embodiment, the backrest assembly 2 and the base assembly 1 are connected through the at least two angle adjusters 3, so as to improve the connection strength between the backrest assembly 2 and the base assembly 1 and make the backrest assembly 2 run more stably.

[0051] Through the transmission shaft 501 connected with the input end of each angle adjuster 3, on the one hand, when the gas generator 4 releases gas or the rotating driving device 6 drives, the transmission shaft 501 can simultaneously drive all the angle adjusters 3 to rotate, so that the backrest assembly 2 is balanced in stress and runs stably when being reclined, and on the other hand, the angle adjusters 3 can share the gas generator 4 or the rotating driving device 6 through the transmission shaft 501, without separately arranging the gas generator 4 or the rotating driving device 6 for each angle adjuster 3, so as to make the seat assembly have fewer parts, a more compact structure and lower cost.

[0052] In some embodiments provided by the utility model, the rotating driving device 6 is connected with the transmission shaft 501 through a normally open clutch. Optionally, the normally open clutch comprises but is not limited to an electromagnetic clutch, a pneumatic clutch or a hydraulic clutch.

[0053] In the embodiment, the normally open clutch is kept in the disconnected state when the angle of the backrest assembly 2 is not required to be adjusted, the rotary driving device 6 is disconnected with the transmission shaft 501, and the normally open clutch is engaged under the action of current, gas pressure or hydraulic pressure when the angle of the backrest assembly 2 is required to be adjusted, the rotary driving device 6 is connected with the transmission shaft 501 through the normally open clutch, so that the rotary driving device 6 can drive the transmission shaft 501 to rotate.

[0054] Since the rotary driving device 6 comprises a reducer, reverse input exists self-locking or is prone to consume a large torque, in the embodiment, the normally open clutch is kept in the disconnected state during the side impact process, when the gas generator 4 drives the transmission shaft 501 to rotate, the power of the transmission shaft 501 cannot be transmitted to the rotary driving device 6 through the normally open clutch, so that the rotary driving device 6 can avoid dispersing the driving torque of the transmission shaft 501, to ensure the driving effect on the backrest assembly 2, and the problem of jamming caused by self-locking of the rotary driving device 6 can be avoided.

[0055] Of course, in order to avoid dispersing the driving torque or causing the problem of jamming, it is not limited to the form of the normally open clutch, for example, in other embodiments provided by the utility model, the transmission shaft 501 is provided as a spline shaft.

[0056] The rotary driving device 6 is connected with the transmission shaft 501 through the internal spline sleeve, for example, the output end of the rotary driving device 6 is connected with the internal spline sleeve, and the internal spline sleeve is keyed connected with the transmission shaft 501. The internal spline sleeve is used for breaking failure in the process that the gas generator 4 drives the transmission shaft 501 to rotate, that is, the bearable force of the internal spline sleeve to the transmission shaft 501 is less than the driving force of the gas generator 4 to the transmission shaft 501.

[0057] In the embodiment, the internal spline sleeve is provided as a weak link, in the process that the gas generator 4 drives the transmission shaft 501 to rotate, the transmission shaft 501 drives the regulator and the internal spline, and the internal spline sleeve breaks and fails, so that the power of the transmission shaft 501 cannot be transmitted to the rotary driving device 6 through the internal spline sleeve, thereby the rotary driving device 6 can avoid dispersing the driving torque of the transmission shaft 501, to ensure the driving effect on the backrest assembly 2, and the problem of jamming caused by self-locking of the rotary driving device 6 can be avoided.

[0058] Optionally, the internal spline sleeve is provided as a plastic structure or a metal structure with low strength.

[0059] In some embodiments provided by the utility model, the transmission assembly 5 further comprises a cylinder body 502, a push rod 503 and a linear-to-rotary rotation mechanism.

[0060] The cylinder body 502 is connected to the backrest assembly 2 or the base assembly 1, for example, Figure 1The cylinder 502 is connected to the backrest assembly 2. One end of the push rod 503 is slidably extended into the cylinder 502 and forms a pressure chamber with the cylinder 502. The push rod 503 is connected to the transmission shaft 501 through a linear-to-rotary rotation mechanism and is used to drive the transmission shaft 501 to rotate through the linear-to-rotary rotation mechanism.

[0061] The gas generator 4 is connected to the pressure chamber and is used to release gas into the pressure chamber. For example, the gas generator 4 can be arranged in the pressure chamber, or the gas generator 4 is arranged outside the pressure chamber and is in communication with the pressure chamber.

[0062] In this embodiment, after receiving the alarm signal, the gas generator 4 releases gas into the pressure chamber, and the gas in the pressure chamber transmits power to the push rod 503 and drives the push rod 503 to extend. The linear-to-rotary rotation mechanism is used to convert the linear motion of the push rod 503 into rotary motion and drive the transmission shaft 501 to rotate.

[0063] In this way, the structure of the push rod 503 and the cylinder 502 is simple, and the action of the push rod 503 is reliable. For example, the push rod 503 can stably move linearly in the cylinder 502, ensuring that the power of the gas is converted into linear output, thereby ensuring the accuracy and stability of the transmission.

[0064] Optionally, by setting the extension stroke of the push rod 503, the effect of accurately controlling the reclining angle of the backrest assembly 2 can be achieved.

[0065] In some embodiments of the utility model, the linear-to-rotary rotation mechanism comprises a gear 504 and a rack 505.

[0066] The gear 504 is sleeved on the transmission shaft 501, for example, the gear 504 can be keyed connected with the transmission shaft 501. The rack 505 is connected with the push rod 503 and is used to engage with the gear 504, for example, the rack 505 is slidably mounted on the backrest assembly 2.

[0067] In this embodiment, the rack 505 is driven to move in the process that the push rod 503 extends, and the rack 505 engages with the gear 504 to drive the transmission shaft 501 to rotate. In this way, the structure of the linear-to-rotary rotation mechanism is simple and compact, and the transmission is reliable.

[0068] Further, when the push rod 503 is in the initial state, the rack 505 is disengaged from the gear 504. In this way, in the process that the rotary drive device 6 drives the transmission shaft 501 to rotate, the gear 504 will not engage with the rack 505, thereby avoiding the influence of the rack 505 on the gear 504, to ensure that the angle adjustment of the backrest assembly 2 is not interfered.

[0069] Of course, the linear-to-rotary mechanism is not limited to the form of the gear 504 and the rack 505, for example, in other embodiments of the utility model, the linear-to-rotary mechanism comprises a flexible member 506. For example, the flexible member 506 includes but is not limited to a drawstring or a drawcord.

[0070] Wherein, one end of the flexible member 506 is connected with the transmission shaft 501, the flexible member 506 is arranged around the transmission shaft 501, and the other end of the flexible member 506 is connected with the push rod 503.

[0071] In this embodiment, the flexible member 506 is pulled during the extension of the push rod 503, so that the flexible member 506 arranged around the transmission shaft 501 is unfolded, and the flexible member 506 can drive the transmission shaft 501 to rotate during the unfolding process. In this way, the linear-to-rotary mechanism has a simple structure and low cost.

[0072] Optionally, the linear-to-rotary mechanism further comprises a fixing rod 7, and the transmission shaft 501 is arranged as a spline shaft. Wherein, one end of the flexible member 506 is connected with the fixing rod 7, for example, one end of the flexible member 506 is provided with a fixing hole for the fixing rod 7 to pass through. The fixing rod 7 is arranged between two key teeth of the spline shaft, and the flexible member 506 is arranged around the part of the transmission shaft 501 provided with the fixing rod 7.

[0073] In this embodiment, by arranging the fixing rod 7 and arranging the fixing rod 7 between the two key teeth of the spline shaft, during the pulling of the flexible member 506 by the push rod 503, the limiting effect of the fixing rod 7 can prevent the flexible member 506 from sliding relative to the transmission shaft 501, so that the flexible member 506 can more reliably pull the transmission shaft 501 to rotate. The flexible member 506 is arranged around the part of the transmission shaft 501 provided with the fixing rod 7, which can prevent the fixing rod 7 from coming out of the two key teeth.

[0074] Further, the fixing rod 7 can also be fixed by adhesive tape or glue to prevent the fixing rod 7 from coming out of the two key teeth.

[0075] Optionally, when the push rod 503 is in the initial state, the flexible member 506 has a preset amount of sag, so that the angle adjustment of the backrest assembly 2 is not limited.

[0076] It can be understood that the gas generator 4 is not limited to transmitting power to the transmission shaft 501 or the input end through the cylinder 502, the push rod 503 and the linear-to-rotary mechanism. For example, in other embodiments of the utility model, the seat assembly comprises a pneumatic motor. The pneumatic motor is installed on the backrest assembly 2 or the base assembly 1, and the gas generator 4 is connected with the air inlet of the pneumatic motor to release gas to the pneumatic motor. The output shaft of the pneumatic motor is connected with the transmission shaft 501 or the input end to drive the transmission shaft 501 or the input end to rotate.

[0077] In the embodiment, the gas released by the gas generator 4 drives the pneumatic motor to rotate, and the pneumatic motor drives the transmission shaft 501 or the input end to rotate, so that the backrest assembly 2 is inclined backward.

[0078] In some embodiments of the utility model, the side of the backrest assembly 2 is provided with a side airbag. In the embodiment, the side airbag is provided, in the side collision process, the backrest assembly 2 makes the passenger lean backward, makes the passenger close to the door sill area with greater rigidity, and cooperates with the side airbag inflation to protect the side of the passenger, which can further reduce the injury of the passenger.

[0079] Optionally, the side airbag can be a head and chest integrated side airbag.

[0080] In some embodiments of the utility model, the backrest assembly 2 is provided with a safety belt upper end fixed point. In the prior art, the safety belt upper end fixed point is usually arranged on the B column, and in the embodiment, the safety belt upper end fixed point is arranged on the backrest assembly 2, and in the process of the backrest assembly 2 being inclined backward, the backrest assembly 2 can restrain the passenger from leaning backward through the safety belt, improve the leaning speed of the passenger, and improve the protection effect on the passenger. It should be noted that the safety belt upper end fixed point is a product in the prior art, and the present application only changes the position of the safety belt upper end fixed point and does not involve the structural improvement of the safety belt upper end fixed point, so it will not be described here.

[0081] The embodiment of the utility model also provides a vehicle.

[0082] Specifically, the vehicle comprises the seat assembly as described above.

[0083] It should be noted that the vehicle includes the seat assembly, and also includes all the advantages of the seat assembly, so it will not be described here.

[0084] In some embodiments of the utility model, the vehicle comprises a collision sensor.

[0085] The collision sensor is arranged on the side of the vehicle, and the collision sensor is electrically connected with the gas generator 4 and is used to send an alarm signal to the gas generator 4.

[0086] In the embodiment, in the side collision process, the collision sensor is triggered, the collision sensor sends an alarm signal to the gas generator 4, the gas generator 4 generates gas in response to the alarm signal, and the power of the gas is transmitted to the input end through the transmission assembly 5 to drive the input end to rotate, so that the backrest assembly 2 is inclined backward.

[0087] Of course, it is not limited to sending the alarm signal passively through the collision sensor, for example, in other embodiments provided by the utility model, the vehicle further comprises a control system, the control system is electrically connected with the gas generator 4, and is used for sending the alarm signal to the gas generator 4.

[0088] In this embodiment, the control system can actively send the alarm signal to the gas generator 4 before the collision occurs or in other emergency situations, the gas generator 4 generates gas in response to the alarm signal, and the power of the gas is transmitted to the input end through the transmission assembly 5 to drive the input end to rotate, so that the backrest assembly 2 is reclined.

[0089] Although the embodiments of the utility model are described in combination with the drawings, various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A seat assembly, characterized in that: include: A base assembly (1), a backrest assembly (2) and a recliner (3), wherein the base assembly (1) is connected to the backrest assembly (2) via the recliner (3), the recliner (3) having an input end, and the recliner (3) can drive the backrest assembly (2) to rotate relative to the base assembly (1) in response to power input from the input end; A gas generator (4) and a transmission assembly (5), wherein the gas generator (4) is connected to the input end through the transmission assembly (5); the gas generator (4) can generate gas in response to an alarm signal, and transmit the power of the gas to the input end through the transmission assembly (5) to drive the input end to rotate, and the direction of rotation of the input end causes the backrest assembly (2) to tilt backward.

2. The seat assembly according to claim 1, characterized in that: The transmission assembly (5) comprises a transmission shaft (501), the gas generator (4) is connected to the input end via the transmission shaft (501), and the gas generator (4) is used to drive the transmission shaft (501) to rotate.

3. The seat assembly according to claim 2, characterized in that: The seat assembly further comprises a rotation drive device (6), the rotation drive device (6) being mounted on the backrest assembly (2) and connected to the transmission shaft (501), the rotation drive device (6) being used to drive the transmission shaft (501) to rotate; And / or, the number of the recliners (3) is set to at least two, at least two of the recliners (3) are coaxially arranged, at least two of the recliners (3) are connected to the backrest assembly (2) and the base assembly (1), and the transmission shaft (501) is connected to the input end of each of the recliners (3).

4. The seat assembly according to claim 3, characterized in that: The rotation drive device (6) is connected to the transmission shaft (501) via a normally open clutch; Alternatively, the transmission shaft (501) is a spline shaft, and the rotation drive device (6) is connected to the transmission shaft (501) via an internal spline sleeve, and the internal spline sleeve is used to break and fail during the process of the gas generator (4) driving the transmission shaft (501) to rotate.

5. The seat assembly according to any one of claims 2 to 4, characterized in that: The transmission assembly (5) further includes a cylinder (502), a push rod (503) and a linear rotation mechanism; The cylinder body (502) is connected to the backrest assembly (2) or the base assembly (1), one end of the push rod (503) can be slidably extended into the cylinder body (502) and forms a pressure chamber with the cylinder body (502), and the push rod (503) is connected to the transmission shaft (501) through the linear rotation mechanism and is used to drive the transmission shaft (501) to rotate through the linear rotation mechanism; The gas generator (4) is connected to the pressure chamber and is used to release gas into the pressure chamber.

6. The seat assembly according to claim 5, characterized in that: The linear rotation mechanism includes a gear (504) and a rack (505); The gear (504) is mounted on the transmission shaft (501), and the rack (505) is connected to the push rod (503) and is used to mesh with the gear (504).

7. The seat assembly according to claim 5, characterized in that: The linear rotation mechanism further comprises a flexible member (506), one end of which is connected to the transmission shaft (501), the flexible member (506) is wound around the transmission shaft (501), and the other end of which is connected to the push rod (503).

8. The seat assembly according to any one of claims 1 to 4, characterized in that: The side of the backrest assembly (2) is provided with a side airbag; And / or, a safety belt upper end fixing point is provided on the backrest assembly (2).

9. A vehicle, characterized in that: Comprising the seat assembly according to any one of claims 1 to 8.

10. The vehicle according to claim 9, characterized in that The vehicle includes a collision sensor, which is arranged on a side of the vehicle, and is electrically connected to the gas generator (4) and is used to send an alarm signal to the gas generator (4); And / or, the vehicle comprises a control system, the control system being electrically connected to the gas generator (4) and being used to send an alarm signal to the gas generator (4).

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