CN217864028U - Airbag assembly and vehicle with same - Google Patents

Abstract

The utility model discloses an air bag assembly and a vehicle with the same. The vehicle includes a seat. The air bag assembly is arranged in the seat and adjacent to the outer edge of the seat. The air bag assembly includes: a first air bag, a second air bag and a gas Generating device, the second air bag is arranged on the outside of the first air bag, the gas generating device is arranged on the outside of the first air bag and the second air bag, the gas generating device is connected with the first air bag and the second air bag respectively, and the gas generating device When the device is activated, both the first airbag and the second airbag deploy towards the front side of the seat. According to the airbag assembly of the present utility model, the driver and passenger can be pushed towards the inner side of the second air bag to increase the distance between the driver and passenger and the collision position, so that the driver and passenger can maintain a safe posture and position, and then The impact of vehicle collision on the driver can be reduced to ensure the safety of the driver, and it is beneficial to improve the safety protection performance of the airbag component.

Description

Airbag module and vehicle with same

technical field

The utility model relates to the technical field of vehicle components, in particular to an air bag assembly and a vehicle with the same.

Background technique

With the rapid development of the vehicle industry and the continuous popularization of vehicles, the safety of vehicles has gradually become the primary consideration when people buy cars. Among them, airbags are an important means of protection, and their safety protection directly affects the safety of vehicles when they are subjected to collisions. The personal safety of the drivers and passengers, but the airbags in the related art can only cushion the impact, and cannot adjust the posture of the drivers and passengers, so the protection performance is not good.

Utility model content

The utility model provides an air bag assembly, which can push the driver and passengers to a safe posture and position when the vehicle collides, and has the advantage of high protection performance.

The utility model also proposes a vehicle with the above-mentioned air bag assembly.

The airbag assembly according to the embodiment of the present invention is used in a vehicle, the vehicle includes a seat, the airbag assembly is arranged in the seat and adjacent to the outer edge of the seat, and the airbag assembly includes: a first Air bag; second air bag, the second air bag is arranged on the outside of the first air bag; gas generating device, the gas generating device is arranged on the outside of the first air bag and the second air bag , the gas generating device communicates with the first air bag and the second air bag respectively, and after the gas generating device is triggered, the first air bag and the second air bag both face the seat The front side unfolds.

According to the air bag assembly of the embodiment of the present invention, the second air bag is arranged on the outside of the first air bag, and when the gas generating device is triggered, the second air bag can be better blocked between the driver and the passenger and the collision position. , the first airbag can push the occupant to move towards the inner side of the second airbag to increase the distance between the occupant and the collision location, so that the occupant can maintain a safe posture and position, and then the vehicle can be lowered The impact of the collision on the driver is to ensure the safety of the driver, which is conducive to improving the safety protection performance of the airbag component.

According to some embodiments of the present invention, in the inflated and deployed state, the length of the second air bag in the front-rear direction increases in the direction from the upper and lower ends of the second air bag toward the central position.

According to some embodiments of the present invention, in the inflated and deployed state, the upper and lower ends of the first air bag and the second air bag are flush; and/or, in the inflated and deployed state, the second air bag The front end protrudes from the front end of the first air bag.

According to some embodiments of the present invention, in the direction from back to front, the first air bag is deployed in a direction away from the second air bag.

According to some embodiments of the present utility model, the gas generating device includes: an air guide bag, the air guide bag has a first air outlet communicating with the first air bag and a second air outlet communicating with the second air bag Two gas outlets; a gas generator, the gas generator is arranged in the air guide bag.

According to some embodiments of the present invention, in the inflated and expanded state, the volume of the second air bag is larger than that of the first air bag, and the flow area of the second air outlet is larger than the flow area of the first air outlet. area.

According to some embodiments of the present utility model, the seat includes: a seat cushion; a backrest, the backrest is connected to the rear end of the seat cushion, the airbag assembly is arranged in the backrest and adjacent to the outer edge of the backrest, In an inflated and expanded state, the heights of the first air bag and the second air bag are both lower than the upper end of the backrest.

According to some embodiments of the present invention, the airbag assembly further includes: a mounting bracket adapted to be connected to the frame of the backrest and adjacent to the outer edge of the backrest, the mounting bracket has a first mounting portion and a second installation part, the second installation part is arranged at the front end of the first installation part and extends towards the outside of the seat, and in the stored state, the first airbag and the gas generating device are both arranged on the The inner side of the first installation part, at least a part of the second air bag is arranged on the front side of the second installation part.

According to some embodiments of the present utility model, the frame of the backrest includes a first support portion and a second support portion, the second support portion is connected to the rear end of the first support portion and extends toward the inner side of the seat, the The first installation part is arranged inside the first support part, and the first air bag is arranged at an angle between the first installation part and the second support part.

A vehicle according to an embodiment of the present utility model includes: the above-mentioned airbag assembly.

According to the vehicle of the embodiment of the present invention, the second air bag is arranged on the outside of the first air bag, and when the gas generating device is triggered, the second air bag can be better blocked between the driver and passengers and the collision position, The first airbag can push the driver and passenger toward the inner side of the second airbag to increase the distance between the driver and the collision location, so that the driver and passenger can maintain a safe posture and position, thereby reducing vehicle collision The impact on the driver is to ensure the safety of the driver, which is conducive to improving the safety protection performance of the airbag component.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

FIG. 1 is a schematic structural view of an airbag assembly according to an embodiment of the present invention;

2 is a schematic diagram of the first airbag, the second airbag and the seat of the airbag assembly according to an embodiment of the present invention;

3 is a schematic diagram of the gas generating device, the first air bag and the second air bag of the air bag assembly according to an embodiment of the present invention;

Fig. 4 is a partial cross-sectional view of an airbag assembly and a seat according to an embodiment of the present invention.

Reference signs:

air bag assembly 100;

first air bag 1;

Second air bag 2;

Gas generating device 3; air guide bag 31; first gas outlet 311; second gas outlet 312; gas generator 32;

The mounting bracket 4; the first mounting part 41; the second mounting part 42;

Seat 200 ; seat cushion 210 ; backrest 220 ; frame 230 ; first support portion 231 ;

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

The following disclosure provides many different embodiments or examples for realizing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the utility model. Furthermore, the present invention may repeat reference numerals and/or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, various specific process and material examples are provided herein, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.

The airbag assembly 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1-4 , the airbag assembly 100 according to the embodiment of the present invention is used in a vehicle. The vehicle includes a seat 200 . That is to say, in the storage state, the airbag assembly 100 is arranged inside the seat 200, which can better save the installation space occupied by the airbag assembly 100, has a reasonable layout, and has a good protective effect on the airbag assembly 100 through the seat 200, so as to It is ensured that the airbag assembly 100 can pop out stably and reliably when the vehicle encounters a collision, so as to protect the driver and passengers. Wherein, the outside here refers to, in the left-right direction, the side of the seat 200 facing the outside of the vehicle, for example, when the seat 200 is the main driver's seat, the outer edge of the seat 200 refers to the main driver's seat , that is, the airbag assembly 100 on the main driver's seat is arranged on the right side of the left edge of the seat 200, and is adjacent to the left edge of the seat 200; and when the seat 200 is a passenger seat The outer edge of the seat 200 refers to the right edge of the passenger seat, that is, the airbag assembly 100 on the passenger seat is located on the left side of the right edge of the seat 200 and adjacent to the right side of the seat 200 edge. Therefore, when the airbag assembly 100 is triggered and pops up, it is adjacent to the outer edge of the seat 200, for example, when the side of the vehicle is hit, the airbag assembly 100 is positioned between the driver and the passenger and the collision position after being popped up, so that the airbag assembly 100 can be released from The side of the driver and passenger buffers the impact of the vehicle, thereby reducing the damage to the driver and passenger due to vehicle collision, so as to ensure the safety of the driver and passenger.

Wherein, the airbag assembly 100 includes: a first airbag 1 , a second airbag 2 and a gas generating device 3 . Specifically, the second air bag 2 is arranged on the outside of the first air bag 1, and the gas generating device 3 is arranged on the outside of the first air bag 1 and the second air bag 2, and the gas generating device 3 is connected with the first air bag 1 and the second air bag respectively. The air bags 2 are connected, and after the gas generating device 3 is triggered, both the first air bag 1 and the second air bag 2 are deployed towards the front side of the seat 200 . That is to say, when the gas generating device 3 is triggered, if the vehicle is hit by a collision, the gas generating device 3 is triggered, and the gas generating device 3 quickly fills the first air bag 1 and the second air bag 2 with gas respectively, and the first air bag 1 and the second air bag 2 are inflated and unfolded forward. Since the second air bag 2 is located outside the first air bag 1, when the vehicle suffers a side collision, the second air bag 2 can better block the collision position and the driver and passengers. between and to buffer the inward impact of the body structure, the first airbag 1 is located inside the second airbag 2, that is, the first airbag 1 is located on the side of the second airbag 2 facing the driver and passengers, therefore, at the During the unfolding process of an airbag 1, the first airbag 1 can better push the driver and passengers to move in a direction away from the second airbag 2, so that the distance between the driver and the second airbag 2 can be better increased. In turn, the distance between the driver and the passenger and the collision location can be better increased, so that the driver and passenger can maintain a safe posture and position, thereby reducing the impact of the vehicle collision on the driver and ensuring the safety of the driver , which is conducive to improving the safety protection performance of the airbag assembly 100 . In addition, the first air bag 1 is located between the second air bag 2 and the driver and passengers, so that the first air bag 1 can buffer the impact caused by the vehicle collision again, so as to further reduce the damage of the impact to the driver and passengers.

For example, when the B-pillar on the left side of the vehicle encounters a collision and deforms toward the driving space, the gas generating device 3 of the driver's seat is triggered and inflates the first airbag 1 and the second airbag 2, and the second airbag 2 After being inflated and deployed towards the front side, it is blocked on the left side of the driver to buffer the impact of the B-pillar collision and prevent the inward deformation of the B-pillar. When the first airbag 1 is inflated and deployed towards the front side, it pushes the driver towards the right side Movement, that is, pushing the driver away from the second airbag 2, can better increase the distance between the driver and the collision position of the B-pillar, thereby reducing the impact of the vehicle collision on the driver and ensuring the safety of the driver.

Wherein, the gas generating device 3 can simultaneously inflate the first airbag 1 and the second airbag 2, so that the first airbag 1 and the second airbag 2 can be deployed synchronously and quickly, thereby shortening the life of the airbag assembly 100 better. The pop-up time is to ensure that the airbag assembly 100 can react quickly to protect the driver and passengers, which is beneficial to improving the safety protection performance of the airbag assembly 100 .

According to the air bag assembly 100 of the embodiment of the present utility model, the second air bag 2 is arranged on the outside of the first air bag 1, and when the gas generating device 3 is triggered, the second air bag 2 can better block the driver and occupant and the collision At the same time between positions, the first airbag 1 can push the occupant to move towards the inner side of the second airbag 2 to increase the distance between the occupant and the collision position, so that the occupant can maintain a safe posture And the position, and then can reduce the impact of the vehicle collision on the driver to ensure the safety of the driver, which is beneficial to improve the safety protection performance of the airbag assembly 100 .

According to some embodiments of the present invention, in the inflated and expanded state, the length of the second air bag 2 in the front-rear direction increases in the direction from the upper and lower ends of the second air bag 2 toward the central position. The center position here refers to the center position of the second air bag 2 in the up-down direction. That is to say, after the second air bag 2 is fully inflated, the length of the center position of the second air bag 2 in the front-to-back direction is greater than the length of the two ends of the second air bag 2 in the front-to-back direction. It is better to increase the coverage area of the center position of the second air bag 2 on the side of the driver and passenger, wherein it can be understood that the chest area of the driver and passenger is opposite to the center position of the second air bag 2, thus, by increasing the second air bag The coverage area of the central position of the airbag 2 can better enhance the protective effect of the airbag assembly 100 on the chest area of the driver and occupant, which is beneficial to improve the protective performance of the airbag assembly 100 .

According to some optional embodiments of the present utility model, in the inflated and deployed state, the upper and lower ends of the first air bag 1 and the second air bag 2 are even. That is to say, after the air bag assembly 100 is fully bounced, that is, after the first air bag 1 and the second air bag 2 are fully inflated and deployed, the upper end of the first air bag 1 is flush with the upper end of the second air bag 2, and the first air bag 1 and the second air bag 2 are flush with each other. The lower end of the air bag 1 is flush with the lower end of the second air bag 2, so that in the up-down direction, the first air bag 1 and the second air bag 2 can better cover the sides of the driver and occupant, ensuring that the up-down direction While the upper second airbag 2 can cover the sides of the driver and passengers, it can better increase the coverage area of the first airbag 1 in the up and down direction, and can better increase the contact between the first airbag 1 and the driver and passengers. contact area to improve the driving effect of the first airbag 1 on the driver and occupant, thereby ensuring that the first airbag 1 can push the driver and occupant to a safe posture and position more quickly during the deployment process.

According to some optional embodiments of the present utility model, in the inflated and deployed state, the front end of the second air bag 2 protrudes from the front end of the first air bag 1 . That is to say, after the first airbag 1 and the second airbag 2 are fully inflated, the front end of the second airbag 2 is located at the front side of the first airbag 1 . Thus, in the front-rear direction, the coverage area of the second airbag 2 on the side of the driver and passenger can be better increased, thereby increasing the range where the second airbag 2 prevents the driver and passenger from contacting the collision position, which is beneficial to The protective effect of the second air bag 2 is further improved. In addition, the front end of the first air bag 1 is located at the rear side of the front end of the second air bag 2, which prevents the first air bag 1 from moving forward while ensuring that the first air bag 1 can push the driver and passengers to a safe posture and position. If the pop-up distance is too long, it will cause impact damage to the driver and passengers, and the layout is reasonable.

According to some embodiments of the present invention, in the direction from back to front, the first air bag 1 is deployed in a direction away from the second air bag 2 . That is to say, when the gas generating device 3 is triggered, the first airbag 1 is deployed toward the inner side of the seat 200 , that is, toward the driver and passengers in the direction from back to front. Thus, the distance that the first air bag 1 pushes the driver and passengers can be better increased, thereby further increasing the distance between the driver and the passenger and the collision position, that is, the first air bag 1 can push the driver and passengers Push it to a position farther from the collision area, so that the driver and passengers can be in a safe posture and position to ensure the safety of the driver and passengers.

According to some embodiments of the present utility model, the gas generating device 3 includes: an air guiding bag 31 and a gas generator 32, the air guiding bag 31 has a first gas outlet 311 communicating with the first air bag 1 and a gas outlet 311 connected to the second air bag 2 The connected second air outlet 312 and the gas generator 32 are arranged in the air guide bag 31 . That is to say, after the gas generating device 3 is triggered, the gas generator 32 can discharge a large amount of gas in the air guide bag 31, and the gas in the air guide bag 31 can enter the second air bag 2 through the second gas outlet 312 so that The second air bag 2 can be quickly deployed forward to block between the side of the driver and the passenger and the collision position. At the same time, the gas in the air guide bag 31 also enters the first air bag 1 through the first air outlet 311 so that the An air bag 1 can be quickly deployed forward and push the driver and passengers to a safe posture and position, so as to ensure the safety of the driver and passengers.

Further, in the inflated and expanded state, the volume of the second air bag 2 is greater than that of the first air bag 1 . That is to say, the amount of gas that the second air bag 2 can hold is greater than the amount of gas that the first air bag 1 can hold, so that the second air bag 2 can have a larger buffer area and better buffer effect. Wherein, the flow area of the second air outlet 312 is larger than the flow area of the first air outlet 311 . That is to say, in a unit time, the amount of gas entering the second air bag 2 through the second air outlet 312 is greater than the amount of gas entering the first air bag 1 through the first air outlet 311 . Thus, the synchronous deployment of the first airbag 1 and the second airbag 2 can be better ensured, thereby shortening the time for the airbag assembly 100 to fully bounce, that is, the response of the airbag assembly 100 can be shortened better. speed to improve the protective performance of the airbag assembly 100.

According to some embodiments of the present utility model, the seat 200 includes: a seat cushion 210 and a backrest 220 , and the backrest 220 is connected to the rear end of the seat cushion 210 . That is, the occupant can sit on the seat cushion 210, and the back of the occupant can lean against the backrest 220, wherein the airbag assembly 100 is arranged in the backrest 220 and adjacent to the outer edge of the backrest 220, for example, when the seat 200 is the main body When driving the seat, the outer edge of the backrest 220 refers to the left edge of the backrest 220, that is, the airbag assembly 100 on the main driver's seat is installed on the right side of the left edge of the backrest 220, and is adjacent to the left edge of the backrest 220. When the seat 200 is a passenger seat, the outer edge of the backrest 220 refers to the right edge of the backrest 220, that is, the airbag assembly 100 on the passenger seat is installed on the left side of the right edge of the backrest 220, and Adjacent to the right side edge of the backrest 220, thus, when the airbag assembly 100 is triggered and pops up, it is adjacent to the outer edge of the backrest 220. Between the collision positions, the impact of the collision on the upper body of the driver and passengers can be reduced by the airbag assembly 100 to ensure the safety of the drivers and passengers.

Wherein, in the inflated and deployed state, the heights of the first air bag 1 and the second air bag 2 are both lower than the upper end of the backrest 220 . That is to say, after the first air bag 1 and the second air bag 2 are fully inflated and deployed, the first air bag 1 and the second air bag 2 are located at the lower side of the upper end of the backrest 220 . Thus, while ensuring the protective performance of the airbag assembly 100 for the driver and passengers, it is possible to better avoid the interference of the upper ends of the first air bag 1 and the second air bag 2 protruding from the upper end of the backrest 220, so that the first air bag The bag 1 and the second air bag 2 can be ejected quickly. For example, in a specific example, the head airbag is installed above the backrest 220. After the head airbag is inflated and deployed, it is located on the upper side of the backrest 220 to protect the head of the driver and occupant. Thus, the airbag can be better prevented. When the assembly 100 is ejected, it interferes with the ejection of the head airbag, so as to ensure that the airbag assembly 100 and the head airbag can eject stably and reliably, so as to further ensure the safety of the drivers and passengers.

Further, the airbag assembly 100 also includes a mounting bracket 4, the mounting bracket 4 is adapted to be connected with the frame 230 of the backrest 220 and adjacent to the outer edge of the backrest 220, the mounting bracket 4 has a first mounting portion 41 and a second mounting portion 42, the second The mounting part 42 is located at the front end of the first mounting part 41 and extends towards the outside of the seat 200. For example, the mounting bracket 4 in the main driver's seat is installed on the frame 230 adjacent to the left edge of the main driver's seat. The front end of the first mounting portion 41 is connected to the right end of the second mounting portion 42 and there is an angle between the first mounting portion 41 and the second mounting portion 42, and the angle between the first mounting portion 41 and the second mounting portion 42 is located in the first mounting portion 42. The left side of the mounting portion 41 and the rear side of the second mounting portion 42 . Wherein, in the stored state, the first air bag 1 and the gas generating device 3 are both disposed inside the first mounting portion 41 , and at least part of the second air bag 2 is disposed on the front side of the second mounting portion 42 .

That is to say, the first installation part 41 is positioned at the outside of the first airbag 1, and the second installation part 42 is positioned at at least part of the rear side of the second airbag 2, and therefore, after the gas generating device 3 is triggered, the first airbag 1 and the second air bag 2 are inflated, the first mounting part 41 can better support the first air bag 1 from the outside, so that under the push of the reaction force of the first mounting part 41, the first air bag 1 moves toward the second air bag. The inner side of a mounting part 41 is expanded, thereby ensuring that the first airbag 1 can push the driver and occupant to move in a direction away from the first mounting part 41 during the unfolding process, that is, increase the distance between the driver and the passenger and the collision position, so as to ensure Drivers and passengers are in a safe posture and position. And in the process that the second air bag 2 expands, the second mounting part 42 can support the second air bag 2 from the rear side preferably, so that under the promotion of the reaction force of the second mounting part 42, the second air bag 2 It is deployed forward and blocked between the driver and passengers and the collision position, so as to reliably buffer the impact of the collision on the driver and passengers. Thus, the mounting bracket 4 can not only better reduce the installation and adaptation difficulty of the first air bag 1, the second air bag 2 and the gas generating device 3, but also better provide the first air bag 1, the second air bag The reaction force of the deployment of the airbag 2 ensures that the first airbag 1 and the second airbag 2 can be deployed toward a predetermined direction, which is beneficial to improving the protective performance of the airbag assembly 100 . In addition, mutual interference during deployment of the first airbag 1 and the second airbag 2 can be better avoided, so as to ensure the speed and reliability of the airbag assembly 100 popping off.

Further, the frame 230 of the backrest 220 includes a first support portion 231 and a second support portion 232, the second support portion 232 is connected to the rear end of the first support portion 231 and extends toward the inside of the seat 200, the first mounting portion 41 is disposed inside the first supporting portion 231 . For example, the mounting bracket 4 is installed on the left side of the frame 230 of the main driver's seat, the rear end of the first support part 231 is connected with the left end of the second support part 232, and the first support part 231 and the second support part 232 have an included angle , the angle between the first support part 231 and the second support part 232 is located on the right side of the first support part 231 and on the front side of the second support part 232, and the first mounting part 41 is fixed on the inner side of the first support part 231 on the wall.

Furthermore, the first air bag 1 is disposed at the angle between the first installation part 41 and the second support part 232 . That is to say, the first airbag 1 is located inside the first installation part 41 and on the front side of the second support part 232, therefore, when the gas generating device 3 is triggered and inflated into the first airbag 1, the first installation Part 41 can better support the first airbag 1 from the outside, and the second support part 232 can better support the first airbag 1 from the rear side, so that the first installation part 41 and the second support part 232 provide Under the reaction force, the first air bag 1 can be deployed toward the inside of the mounting bracket 4 in the direction from back to front, thus, the distance that the first air bag 1 pushes the driver and passengers can be better increased, thereby The distance between the driver and the passenger and the collision position can be better increased, so that the driver and passenger can be in a safe posture and position to ensure the safety of the driver and passenger.

A vehicle according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

The vehicle according to the embodiment of the utility model includes: an airbag assembly 100 .

According to the vehicle of the embodiment of the utility model, the second air bag 2 is arranged on the outside of the first air bag 1, and when the gas generating device 3 is triggered, the second air bag 2 can be better blocked between the driver and passengers and the collision position. At the same time, the first airbag 1 can push the occupant to move towards the inner side of the second airbag 2 to increase the distance between the occupant and the collision position, so that the occupant can maintain a safe posture and position , thereby reducing the impact of the vehicle collision on the driver to ensure the safety of the driver, which is beneficial to improving the safety protection performance of the airbag assembly 100 .

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrated; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two elements or the interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications, the scope of the present invention is defined by the claims and their equivalents.

Claims (10)

1. An air bag assembly for a vehicle, wherein the vehicle includes a seat, the air bag assembly is disposed in the seat and adjacent to the outer edge of the seat, the air bag assembly includes: first air bag; a second air bag, the second air bag is arranged on the outside of the first air bag; A gas generating device, the gas generating device is arranged outside the first air bag and the second air bag, the gas generating device communicates with the first air bag and the second air bag respectively, the After the gas generating device is triggered, both the first air bag and the second air bag are deployed towards the front side of the seat. 2. The airbag assembly according to claim 1, wherein, in the inflated and deployed state, in the direction from the upper and lower ends of the second airbag toward the central position, the second airbag is in the front-rear direction length increases. 3. The airbag assembly according to claim 1, characterized in that, in the inflated and deployed state, the upper and lower ends of the first air bag and the second air bag are flush; and/or, in the inflated and deployed state , the front end of the second air bag protrudes from the front end of the first air bag. 4 . The airbag assembly according to claim 1 , wherein, in a rear-to-front direction, the first airbag deploys in a direction away from the second airbag. 5. The airbag assembly according to claim 1, wherein the gas generating device comprises: An air guide bag, the air guide bag has a first air outlet communicated with the first air bag and a second air outlet communicated with the second air bag; A gas generator, the gas generator is arranged in the air guide bag. 6. The airbag assembly according to claim 5, wherein in the inflated and deployed state, the volume of the second airbag is larger than that of the first airbag, and the flow area of the second air outlet is larger than the first airbag. Describe the flow area of the first air outlet. 7. The airbag assembly of claim 1, wherein the seat comprises: cushion; Backrest, the backrest is connected to the rear end of the seat cushion, the airbag assembly is arranged in the backrest and adjacent to the outer edge of the backrest, and in the inflated and expanded state, the first airbag and the second airbag The height of the pockets are lower than the upper end of the backrest. 8. The airbag assembly according to claim 7, further comprising: a mounting bracket adapted to be connected to the frame of the backrest and adjacent to the outer edge of the backrest, the mounting bracket having a first a mounting part and a second mounting part, the second mounting part is arranged at the front end of the first mounting part and extends toward the outside of the seat; in the stowed state, the first air bag and the gas generating device It is arranged inside the first installation part, and at least part of the second air bag is arranged on the front side of the second installation part. 9. The airbag assembly according to claim 8, wherein the frame of the backrest comprises a first support portion and a second support portion, the second support portion is connected to the rear end of the first support portion and faces toward the seat The inner side of the chair extends, the first installation part is arranged on the inner side of the first support part, and the first air bag is arranged at an angle between the first installation part and the second support part. 10. A vehicle, characterized by comprising: the airbag assembly according to any one of claims 1-9.

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