CN114734946A

CN114734946A - Air bag and vehicle

Info

Publication number: CN114734946A
Application number: CN202210443866.4A
Authority: CN
Inventors: 蔡甫; 张秀琴; 陈焱; 洪妍鑫
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-07-12

Abstract

The application discloses air bag and vehicle belongs to car safety configuration technical field. The safety airbag is positioned on one side of a front seat of the vehicle, which faces to a rear seat, and comprises a shell, an air bag and a gas generator, wherein the gas generator is positioned in the shell, and the gas outlet end of the gas generator is communicated with the air bag; the airbag is in an uninflated state, and the airbag is stacked in the shell; when the safety airbag is in an inflated state, one end of the air bag is connected with the inner wall of the shell, the other end of the air bag is ejected out of the shell, the air bag forms a plurality of cavities, and two adjacent cavities are connected through a pull belt. In the unfolding process of the air bag, the arrangement of the pull belt easily enables the extension direction of the air bag to be changed, namely the air bag extends to a position between the leg of a rear passenger and a front seat, so that the leg of the rear passenger cannot be in rigid contact with the front seat, and the leg of the rear passenger is protected.

Description

Air bag and vehicle

Technical Field

The application relates to the technical field of automobile safety configuration, in particular to an air bag and a vehicle.

Background

When an automobile is collided with a barrier in an accident, because the impact force in the automobile is large, drivers and passengers in the automobile easily collide with the device in the automobile for the second time. To avoid the injury to the driver and passengers caused by the secondary collision, safety airbags are usually arranged in front of the vehicle, at the side of the front row, at the side of the rear row and at the roof of the vehicle. The safety airbag can quickly form an air cushion filled with air after the automobile collides with a barrier, so that the impact on drivers and passengers is relieved, the collision energy is absorbed, and the injury degree to passengers is reduced.

In the related art, the airbag is provided only for the protection of the occupant in the front row of the vehicle and not for the protection of the occupant in the rear row of the vehicle, and particularly, the rigid structure of the front seat is liable to cause injury to the legs of the rear occupant during an actual collision, so that the legs of the rear occupant are liable to be injured.

Disclosure of Invention

In view of this, the present application provides an airbag and a vehicle to protect the legs of a rear passenger in a vehicle collision.

Specifically, the method comprises the following technical scheme:

in one aspect, the embodiment of the application provides an airbag, which is positioned on one side of a front seat of a vehicle, which faces a rear seat, and comprises a shell, an airbag and a gas generator,

the gas generator is positioned in the shell, and the gas outlet end of the gas generator is communicated with the gas bag;

the airbag is stacked in the shell under the uninflated state;

when the safety airbag is in an inflated state, one end of the air bag is connected with the inner wall of the shell, the other end of the air bag is ejected out of the outer side of the shell, the air bag forms a plurality of cavities, and two adjacent cavities are connected through a pull belt.

In some embodiments, the plurality of cavities includes a first cavity, a second cavity, a third cavity, and a fourth cavity;

the connecting surface of the first cavity and the second cavity is provided with a first pull belt, the connecting surface of the second cavity and the third cavity is provided with a second pull belt, and the connecting surface of the third cavity and the fourth cavity is provided with a third pull belt;

the first stretching strap is connected with one end of the second stretching strap, the plane where the first stretching strap is located and the plane where the second stretching strap is located are acute angles, and the plane where the third stretching strap is located and the unfolding direction of the air bag are perpendicular.

In some embodiments, the first, second, and third draw tapes are each provided with a plurality of through holes.

In some embodiments, the housing has a fixing hole, and the gas generator has a fixing portion adapted to pass through the fixing hole such that a part of the gas generator is located outside the housing.

In some embodiments, the fixing portion has a seal with an inner wall of the fixing hole.

In some embodiments, first and second opposite sides of the housing are each provided with a first connector,

the first connecting piece is provided with at least one first connecting hole.

In some embodiments, third and fourth opposing sides of the housing are provided with a second plurality of connectors,

the distance between any two adjacent second connecting pieces is the same.

In another aspect, embodiments of the present application further provide a vehicle including an airbag, a front seat, and a rear seat as described in the above aspect, the airbag being located on a side of the front seat facing the rear seat.

In some embodiments, the front seat includes a seat frame and a seat fabric;

the seat fabric covers and establishes on the seat skeleton, and with form between the seat skeleton and hold the chamber, air bag is located hold the intracavity.

In some embodiments, the seating fabric has a skin slot for providing access for the ejection of the airbag.

According to the airbag provided by the embodiment of the application, the airbag is arranged on one side, facing to a rear seat, of a front seat of a vehicle, so that when the vehicle collides, the gas generator works and inflates an airbag stacked in the shell through the gas outlet end of the gas generator, and the airbag is unfolded; the air bag can form a plurality of cavitys, and the area of drawing between the cavity can be at the expansion in-process of air bag, easily makes the extending direction of air bag change, and the air bag extends to between rear passenger's shank and the front seat promptly for rear passenger's shank can not produce the rigid contact with the front seat, realizes the protection to rear passenger's shank.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic illustration of an airbag in an uninflated state and an inflated state according to an exemplary embodiment of the present application;

FIG. 2 is a side view of an airbag provided in accordance with an exemplary embodiment of the present application as it is being stacked;

fig. 3 is a structural diagram of a seat frame of a front seat in a vehicle according to an exemplary embodiment of the present application.

The reference numerals in the figures are denoted respectively by:

1-a shell; 11-a fixation hole; 12-a fixing member; 13-a first mounting hole; 14-a cover body;

2-air bag; 201-a first cavity; 202-a second cavity; 203-a third cavity; 204-a fourth cavity;

3-a gas generator;

4-pulling the belt; 41-a first draw tape; 42-a second draw tape; 43-a third draw tape; 44-a through hole;

5-a seal;

6-a first connector; 61-a first connection hole;

7-a second connector;

8-front row seats; 81-a seat frame;

01-uninflated state; 02-an inflated state;

101-a first side; 102-a second side; 103-third side; 104-fourth side.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it should be understood that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive effort, shall fall within the scope of protection of the present application.

The directional terms referred to in the embodiments of the present application, such as "upper", "lower", "side", and the like, are generally used with reference to the relative relationship of the directions shown in fig. 1, and these directional terms are used merely for the purpose of describing structures and the relationship between the structures more clearly, and are not used for describing absolute directions. When the product is placed in different postures, the orientation may be changed, for example, "up" and "down" may be interchanged.

When an automobile is collided with a barrier in an accident, because the impact force in the automobile is large, drivers and passengers in the automobile easily collide with the device in the automobile for the second time.

To avoid injury to the occupants of a vehicle from a secondary collision, airbags are typically provided in front of the vehicle, to the side of the front row, to the side of the rear row, and to the roof of the vehicle. The safety air bag can provide effective anti-collision protection for passengers, and when the automobile collides, the automobile safety air bag can reduce the injury rate of the passengers by 25%. The safety airbag can quickly form an air cushion filled with air after a vehicle collides with a barrier, so that impact on drivers and passengers is relieved, collision energy is absorbed, and the injury degree to passengers is reduced.

The airbag can generally convert the impact force generated by the direct collision between the body of the passenger and the vehicle body into the collision between the body of the passenger and the airbag, and the airbag is arranged to greatly reduce the possibility of injury of the passenger due to the lower hardness of the airbag. According to statistics, when the vehicle provided with the air bag collides frontally, the injury degree of the passengers can be reduced by 64 percent, and even 80 percent of the passengers are not belted. In addition, the volume of the air bag during explosion is only about 130 decibels and is within a range tolerable by a human body; 78% of gas in the air bag is generally nitrogen, is relatively stable and free of toxicity, and is harmless to human bodies; the powder brought out during explosion is the lubricating powder which keeps the air bag not to stick together in a folded state, and is harmless to human bodies.

In the related art, the airbag mainly comprises a driver airbag, a co-driver airbag, a side airbag and a side curtain, and although these airbags can effectively protect the front passenger in the collision accident process, in the actual collision process, the legs of the rear passenger have a very large probability of colliding with the rigid structure of the front seat to cause injury, so that the airbag for protecting the legs of the rear passenger is urgently needed to be designed to make up for the technical defects of the conventional airbag.

In order to solve the problems in the related art, embodiments of the present application provide an airbag that is disposed at a side of a front seat of a vehicle facing a rear seat, so that a gas generator operates to inflate an airbag stacked in a housing through an outlet end thereof in the event of a collision of the vehicle, thereby protecting legs of a rear passenger.

FIG. 1 is a schematic illustration of an airbag in an uninflated state and an inflated state according to an exemplary embodiment of the present application.

Referring to fig. 1, an airbag provided in an embodiment of the present application, which is located on a side of a front seat of a vehicle facing a rear seat, includes a housing 1, an airbag 2, and a gas generator 3.

The gas generator 3 is positioned in the shell 1, and the gas outlet end of the gas generator 3 is communicated with the gas bag 2;

the airbag is in an uninflated state 01, and the airbag 2 is stacked in the shell 1;

when the safety airbag is in an inflation state 02, one end of the air bag 2 is connected with the inner wall of the shell 1, the other end of the air bag is ejected out of the shell 1, the air bag 2 forms a plurality of cavities, and two adjacent cavities are connected through the pull belt 4.

The airbag provided by the embodiment of the application is arranged on one side of a front seat facing a rear seat of a vehicle, so that when the vehicle collides, the gas generator 3 works to inflate the gas bag 2 stacked in the shell 1 through the gas outlet end of the gas generator, and the gas bag 2 is unfolded; the air bag 2 can form a plurality of cavities, and the stretching strap 4 between the cavities can easily change the extending direction of the air bag 2 in the unfolding process of the air bag 2, namely the air bag 2 extends to a position between the leg of a rear passenger and a front seat, so that the leg of the rear passenger cannot be in rigid contact with the front seat, and the leg of the rear passenger is protected.

The structure of the airbag provided in the embodiment of the present application is further described below:

in some embodiments, the housing 1 is used to house an uninflated airbag 2 and a gas generator 3.

When the airbag is in the non-inflated condition, the airbag 2 is stacked in the housing 1, and a side view of the airbag 2 in the stacked condition is shown in fig. 2.

Wherein, referring to fig. 1, the housing 1 comprises at least one fixing member 12, and the at least one fixing member 12 is located on an inner wall of the housing 1 for fixedly connecting with the airbag 2.

Specifically, one end of the air bag 2 is provided with at least one connecting rope, and the connecting ropes of the air bag 2 correspond to the fixing pieces 12 of the shell 1 one by one, so that one end of the air bag 2 is bound on the inner wall of the shell 1, and when the air bag 2 is inflated and unfolded, the other end of the air bag 2 can be popped out of the shell 1.

In some embodiments, the airbag 2 is generally made of polyamide fabric with good anti-cracking performance, the polyamide fabric is semi-rigid foam plastic, can bear larger pressure, and can reduce the inertia force when the airbag inflates after being vulcanized.

In some embodiments, the interior of the airbag 2 is also coated with a coating material to ensure a hermetic seal of the gas inside the airbag 2.

Alternatively, the number of the fixing members 12 may be two, and the fixing members are symmetrically arranged on both sides of the inner wall of the housing 1.

In some embodiments, the gas generator 3 is located within the housing 1, and the gas outlet end of the gas generator 3 is in communication with the gas pouch 2.

The gas generator 3 includes, among other things, an igniter, and a reactant. After the collision happens, the igniter ignites the igniter immediately, the igniter burns to generate a large amount of heat, so that the reactant is heated and decomposed to generate a large amount of gas, and the generated large amount of gas enters the air bag 2 through the gas outlet end of the gas generator, so that the air bag 2 is rapidly inflated and unfolded.

In some embodiments, the igniter is wrapped with aluminum foil and mounted in a central location within the gas generator. The ignition agent comprises an electric heating wire, explosive and primer, when an ignition instruction is received, the electric heating wire is connected with a circuit, the electric heating wire rapidly generates heat to ignite the primer, the explosive is further ignited, instant explosion generates heat, and reactants are heated and decomposed to generate gas and are released into the air bag.

In some embodiments, to ensure the safety of the aeration process, the gas generated by heating the reactants is generally an inert gas with relatively stable properties.

Alternatively, the reactant may be sodium azide to generate nitrogen gas with more stable properties.

In some embodiments, the housing 1 has a fixing hole 11, and the gas generator 3 has a fixing portion adapted to pass through the fixing hole 11 such that a part of the gas generator 3 is located outside the housing 1.

Specifically, the fixing hole 11 is located at one side of the housing 1 for preliminary positioning of the gas generator 3 during installation of the gas generator 3.

In some embodiments, there is a seal 5 between the fixing portion and the inner wall of the fixing hole 11.

When the fixing portion of the gas generator 3 is penetrated into the fixing hole 11, in order to prevent the gas generator 3 from slipping off the fixing hole 11, the sealing member 5 is fitted in a gap between the fixing portion and the fixing hole 11 and is interference-connected with the fixing portion of the gas generator 3.

It will be appreciated that since the fixing portion is a cylindrical body and the fixing hole 11 is a circular hole, the sealing member 5 may have a ring-shaped structure and closely fit with the fixing portion of the gas generator 3.

In some embodiments, the housing 1 further has at least one first mounting hole (not shown), and the at least one first connecting hole is spaced apart from one side of the housing 1 close to the fixing hole 11. The gas generator 3 also has at least one second mounting hole (not shown), wherein the at least one first mounting hole 13 corresponds to the at least one second mounting hole one by one, and is connected by bolts to realize the fixed connection between the gas generator 3 and the housing 1.

Optionally, the number of the first mounting holes may be two.

In some embodiments, the first and second

opposite sides

101, 102 of the housing 1 are each provided with a first connector 6.

The first connecting pieces 6 are symmetrically disposed on the first side 101 and the second side 102, and are used for fixedly connecting the housing 1 and the front seat.

Specifically, the first connecting member 6 has at least one first connecting hole 61, and one side of the front seat close to the rear seat has at least one second connecting hole (not shown in the figure), wherein the at least one first connecting hole 61 and the at least one second connecting hole are in one-to-one correspondence, and are connected by bolts, so as to realize the fixed connection between the casing 1 and the front seat.

In some embodiments, each of the third 103 and fourth 104 opposing sides of the housing 1 is provided with a plurality of second connectors 7.

So set up, can make a plurality of second connecting pieces 7 and the fitting piece one-to-one correspondence connection that the front seat reserved to further strengthen the joint strength of casing 1 and front seat, avoid when gas generator 3 ignition releases huge energy, casing 1 receives the impact and breaks away from the front seat, causes the secondary injury to the passenger.

It is understood that the distance between any adjacent two second connecting members 7 is the same.

By the arrangement, when the shell 1 is impacted, the second connecting pieces 7 are stressed averagely, and the second connecting pieces 7 with larger stress are prevented from being damaged.

In some embodiments, referring to fig. 1, the interior of the housing 1 is hollow, and one side of the housing 1 has an opening.

So configured, the installation of the components inside the housing 1 can be facilitated.

In some embodiments, the housing 1 further comprises a cover 14, and the cover 14 is rotatably disposed on the opening side of the housing 1 for covering the opening of the housing 1.

When the gas generator 3 in the housing 1 is ignited, the gas bag 2 is rapidly inflated to generate a large amount of energy, which can open the cover 14 to eject the gas bag 2.

When the airbag is in an inflated condition, see fig. 1, the airbag 2 forms a plurality of cavities including a first cavity 201, a second cavity 202, a third cavity 203 and a fourth cavity 204.

It will be appreciated that the provision of a plurality of cavities may allow the gas pouch 2 to have more functions.

Specifically, the first cavity 201 is located below the front seat, and is used for protecting the safety of the feet of the rear passenger; the second chamber 202 is located below the front seat on the side close to the rear seat to facilitate the change of the extending direction of the air bag 2, thus allowing the third chamber 203 to extend upward between the front seat and the rear seat for the safety of the legs of the rear passenger, and the fourth chamber 204 is located above the third chamber 203 for the safety of the knees of the rear passenger.

In some embodiments, the air bag 2 achieves the separation of multiple cavities by providing multiple pull straps 4 at different locations.

In some embodiments, the pull tape 4 is a rectangular sheet, and the length of the pull tape 4 is the same as the length of the air bag 2 perpendicular to the extending direction.

In some embodiments, the drawstring 4 is made of nylon, and the drawstring 4 is sewn on the joint surface between two adjacent cavities.

Specifically, the joint surface of the first cavity 201 and the second cavity 202 has a first pull tape 41, the joint surface of the second cavity 202 and the third cavity 203 has a second pull tape 42, and the joint surface of the third cavity 203 and the fourth cavity 204 has a third pull tape 43.

In some embodiments, with continued reference to FIG. 1, one end of the first pull strap 41 and the second pull strap 42 are connected, and the plane of the first pull strap 41 and the plane of the second pull strap 42 are at an acute angle.

By such an arrangement, the extending direction of the second cavity 202 can be changed, so that the third cavity 203 can extend upwards.

In some embodiments, the plane of the third pull strap 43 is perpendicular to the deployment direction of the airbag 2.

So set up, can make fourth cavity 204 continue to extend upwards, further realize the stability of fourth cavity 204.

In some embodiments, with continued reference to FIG. 1, first pull strap 41, second pull strap 42, and third pull strap 43 are each provided with a plurality of through holes 44.

The provision of the through holes 44 allows communication between the plurality of chambers, and allows the plurality of chambers of the airbag 2 to be rapidly inflated when the gas generator 3 is operated.

Alternatively, the first pull strap 41, the second pull strap 42 and the third pull strap 43 may be integrally formed with the airbag 2.

Alternatively, the number of the through holes 44 may be three.

Alternatively, the shape of the through-hole 44 may be circular.

In some embodiments, the gas pouch 2 is also provided with a safety valve.

Because the air bag 2 has higher air pressure in the inflation process, when the inflation is excessive or the pressure in the bag exceeds a certain value, partial air can be automatically released, and the passengers are prevented from being extruded and injured.

In a possible example, taking the airbag shown in fig. 1 as an example, where the number of the fixing members 12 is two, when the airbag provided by the embodiment of the present application is assembled, the assembly may be performed according to the following steps:

passing the fixing portion of the gas generator 3 through the fixing hole of the housing 1 so that a part of the gas generator 3 is located outside the housing 1;

at least one second mounting hole of the gas generator 3 corresponds to at least one first mounting hole of the shell 1 one by one and is fixedly connected with the first mounting hole through a bolt;

fitting the seal 5 into a gap between the fixing portion of the gas generator 3 and the fixing hole 11 of the housing 1, and interference-connecting with the fixing portion of the gas generator 3;

the air bag 2 is stacked and then placed in the shell 1;

at least one connecting rope of the air bag 2 corresponds to the fixing piece 12 of the shell 1 one by one, and the connecting rope is bound and connected with the fixing piece 12;

the cover 14 is closed over the opening of the case 1.

The present embodiment also provides a vehicle including an airbag, a front seat 8 (shown in fig. 3), and a rear seat as described in the above embodiments, the airbag being located on a side of the front seat 8 facing the rear seat.

Therefore, in the vehicle according to the embodiment of the present application, by providing the airbag 2 as in the above embodiments, the leg of the rear passenger can be protected by ejecting the airbag from the rear side of the front seat 8 when the vehicle collides.

In some embodiments, the front seat 8 includes a seat frame 81 and seat fabric.

The seat frame 81 is used to support the seat, thereby improving the strength of the seat. The seat frame 81 has a seat foam on the outside thereof for improving the comfort of the seat, and a seat fabric for covering the outside of the seat foam for improving the beauty of the seat.

In some embodiments, a receiving cavity is formed between the seat frame 81 and the seat foam, and an airbag is located in the receiving cavity.

With the arrangement, the arrangement space of the safety air bag can be reduced to the greatest extent, and the structural arrangement of the passenger compartment is not influenced.

In some embodiments, the seat fabric has skin slots for providing access for the ejection of the airbag 2.

The skin trunking is a stressed member covering the seat frame 81, and has a small thickness, low elasticity, and is easy to break through.

When the airbag 2 is popped open, the large energy of the rapid inflation of the airbag 2 can rapidly blow open the skin slot and cause the seat fabric to tear, providing a path for the popping open of the airbag 2.

In some embodiments, the airbag provided in the embodiments of the present application is provided in a vehicle equipped with a collision sensor and a signal processor, and when a collision of the vehicle is sensed, the signal processor transmits an ignition signal to the gas generator 3 to inflate the airbag 2.

In a possible example, taking a front seat shown in fig. 3 as an example, when the vehicle provided by the embodiment of the present application is assembled, the assembly may be performed according to the following steps:

at least one first connecting hole in the first connecting piece 6 of the safety airbag corresponds to at least one second connecting hole of the front seat framework 81 one by one and is fixedly connected through a bolt;

a plurality of second connecting members 7 of the airbag are connected to the front seat frame 81 one by one;

filling the gap of the front seat frame with a hard foam material;

sleeving seat fabric on the outer layer of the front-row seat framework;

a plurality of front seats are assembled on a vehicle one by one.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the present application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. The specification and examples are to be regarded in an illustrative manner only.

It will be understood that the present application is not limited to the precise arrangements and instrumentalities shown in the drawings and described above, and that various modifications and changes can be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. An airbag, characterized in that the airbag is positioned on one side of a front seat of a vehicle facing a rear seat and comprises a housing (1), an airbag (2), and a gas generator (3),

the gas generator (3) is positioned in the shell (1), and the gas outlet end of the gas generator (3) is communicated with the gas bag (2);

in the uninflated state (01), the airbag (2) is stacked in the housing (1);

the safety airbag is characterized in that one end of the airbag (2) is connected with the inner wall of the shell (1) in an inflated state (02), the other end of the airbag is ejected out of the shell (1), the airbag (2) forms a plurality of cavities, and two adjacent cavities are connected through a pull belt (4).

2. An airbag according to claim 1 wherein the plurality of cavities comprises a first cavity (201), a second cavity (202), a third cavity (203) and a fourth cavity (204);

a first pull belt (41) is arranged on the joint surface of the first cavity (201) and the second cavity (202), a second pull belt (42) is arranged on the joint surface of the second cavity (202) and the third cavity (203), and a third pull belt (43) is arranged on the joint surface of the third cavity (203) and the fourth cavity (204);

one end of the first pull belt (41) is connected with one end of the second pull belt (42), the plane where the first pull belt (41) is located and the plane where the second pull belt (42) is located are acute angles, and the plane where the third pull belt (43) is located is perpendicular to the unfolding direction of the air bag (2).

3. An airbag according to claim 2 wherein the first pull strap (41), the second pull strap (42) and the third pull strap (43) are each provided with a plurality of through holes (44).

4. An airbag according to claim 1, characterised in that the housing (1) has a fixing hole (11) and the gas generator (3) has a fixing portion adapted to pass through the fixing hole (11) such that part of the gas generator (3) is located outside the housing (1).

5. An airbag according to claim 4 wherein a seal (5) is provided between the fixing portion and the inner wall of the fixing hole (11).

6. An airbag according to claim 1, characterised in that a first (101) and a second (102) opposite side of the housing (1) are each provided with a first connecting piece (6),

the first connecting piece (6) has at least one first connecting opening (61).

7. An airbag according to claim 1, characterised in that a third (103) and a fourth (104) opposite side of the housing (1) are each provided with a plurality of second connectors (7),

the distance between any two adjacent second connecting pieces (7) is the same.

8. A vehicle, characterized in that it comprises an airbag according to any one of claims 1-7, a front seat and a rear seat, said airbag being located on the side of the front seat (8) facing the rear seat.

9. The vehicle of claim 8, characterized in that the front seat (8) comprises a seat frame (81) and a seat fabric;

the seat fabric covers and establishes on seat skeleton (81), and with form between seat skeleton (81) and hold the chamber, air bag is located hold the intracavity.

10. Vehicle according to claim 9, characterized in that the seat fabric has a skin slot for providing access for ejection of the airbag (2).