CN117302099A

CN117302099A - Vehicle seat far-end airbag device and bag folding method

Info

Publication number: CN117302099A
Application number: CN202311298591.0A
Authority: CN
Inventors: 史文宇; 朱隽玮; 赵轶凡
Original assignee: Junsheng Automobile Safety System Anhui Co ltd
Current assignee: Junsheng Automobile Safety System Anhui Co ltd
Priority date: 2023-10-08
Filing date: 2023-10-08
Publication date: 2023-12-29

Abstract

The application provides a vehicle seat far-end gasbag device and bag folding method relates to the technical field of automobile passive safety, and it includes gas generator and bag, and the bag is equipped with gas generator male opening, and the bag is set up in vehicle seat lateral part jointly with gas generator after coiling and/or folding formation roll-up body, and the formation of roll-up body includes following steps: the upper part and/or the lower part of the bag are/is turned over towards the side close to the passenger to form an accordion folding part, and the edge contour line of the accordion folding part forms an included angle with the extension line of the gas generator, and the included angle ranges from 100 degrees to 140 degrees; the bag is wound and/or folded along a direction perpendicular to the edge contour of the accordion folded portion as an axis to form a roll-up body. By limiting the winding and/or folding direction of the bag forming roll-up body, the bag can avoid the arms of passengers in a narrow space and can be unfolded smoothly, and the protection effect can be achieved in a very short time, so that the performance advantage of the bag can be fully exerted.

Description

Vehicle seat far-end airbag device and bag folding method

Technical Field

The application relates to the technical field of passive safety of automobiles, in particular to a vehicle seat far-end airbag device and a bag folding method.

Background

The seat distal airbag is provided on the seat side portion, and when the vehicle collides laterally, the distal airbag deploys between the driver's seat and the passenger seat for preventing the occupant from toppling toward the side away from the vehicle door, or for causing a collision between two occupants while opposing sides between the occupants seated in the same row, thereby providing support protection for the occupants and/or mitigating a collision between the front-row occupants.

For example, the Chinese patent publication No. CN113002472B discloses a far-end airbag for a vehicle seat, which comprises a gas generator and a bag, wherein the gas generator is inserted into the bag and fixedly connected with the bag on a backrest framework of the seat for inflating the bag. The upper end of the second pull belt is fixedly connected with the upper part of the bag, the lower end of the second pull belt is fixed on the first pull belt, and the upper part of the inflated bag can be pulled to bend towards the direction of the seat by the second pull belt. The bag is also provided with a third drawstring, the upper end of the third drawstring is fixed on the upper area of the bag, and the lower end of the third drawstring is fixed on the first drawstring. Through the restriction of first stretching strap to the bag lower part for the bag is in the inflation and pops out the in-process, and gaseous upper portion that can preferentially be full of the bag, cooperation second stretching strap and third stretching strap draw to bag upper portion, make the bag aerify the back and buckle to the seat direction and draw close, and should buckle the molding and adapt shoulder and head area more, and can be more stable keep at the design area, thereby provide more effective protection for the passenger.

However, since the installation space of the side portion of the vehicle seat is relatively small, the deployment space of the vehicle seat far-end airbag is limited, and there is no folding method for fully exerting the performance advantages of the vehicle seat far-end airbag, so that there is still a need to provide a folding structure and a folding method to better exert the performance of the vehicle seat far-end airbag.

Disclosure of Invention

In view of this, the embodiments of the present disclosure provide a vehicle seat distal airbag apparatus and a bag folding method that enable a bag to avoid an occupant's arm in a narrow space and to be smoothly deployed, and to play a protective role in an extremely short time, thereby fully exerting its performance advantages.

The embodiment of the specification provides the following technical scheme:

the embodiment of the present specification provides a vehicle seat far-end airbag device, including a gas generator and a bag, the bag is sewn along the periphery by at least two panels to form a sealed cavity, and is provided with an opening into which the gas generator is inserted in the lower part of the vehicle rear side, the bag is wound and/or folded to form a roll-up body and then is arranged on the side of the vehicle seat together with the gas generator, and the formation of the roll-up body includes the following steps:

the upper part and/or the lower part of the bag are/is turned sideways towards the passenger to form an accordion folding part, the edge contour line of the accordion folding part and the extension line of the gas generator form an included angle, and the included angle ranges from 100 degrees to 140 degrees;

and winding and/or folding the bag along the axis in the direction close to the gas generator along the direction perpendicular to the edge contour line of the accordion folding part to finally form the folded body.

By the technical scheme, the far-end airbag device of the vehicle seat is arranged at the side part of the vehicle seat, and the airbag is wound and/or folded along the axis in the direction close to the gas generator, so that the folded body can be unfolded into an accordion folding part along the edge contour line of the accordion folding part in the direction far away from the gas generator in the process of generating gas by the point explosion of the gas generator; in the process, the installation position of the far-end airbag device of the vehicle seat is far lower than the arm of a driver, and the rear half arm of the driver is in an inclined downward state and keeps an included angle of about 15-30 degrees with the vertical direction in most cases, the folded body is close to the front of the arm of the driver in the vertical height, and has enough unfolding space in the running direction and does not touch the arm of the driver at all; when the vertical height of the unfolded bag approaches the rear arm half of the arm of the driver, the position of the unfolded bag in the running direction exceeds or approaches the front end position of the rear arm half of the arm of the driver, so that the unfolded bag still continues to be unfolded in the vertical direction and the running direction, and cannot interfere with the rear arm half of the arm of the driver too much;

the front arm half of the arm of the driver is in a horizontal or inclined upward state under most driving conditions, and an included angle of 60-90 degrees is kept between the front arm half of the arm and the vertical direction under most conditions, so that the front arm half of the arm of the driver is slightly higher than the rear arm half of the arm at most in the vertical height, and when the bag is higher than the rear arm half of the arm of the driver at the vertical height, the bag can not excessively interfere with the rear arm half of the arm of the driver even if the bag is continuously unfolded upwards or forwards along a direction away from the gas generator;

in summary, by limiting the direction of winding and/or folding of the bag forming the roll-up body, the bag can be smoothly unfolded while avoiding the arms of the occupant in a narrow space, and the protective effect can be achieved in a very short time, thereby fully exerting the performance advantages thereof.

Preferably, the outline of the upper edge of the accordion folding part is a folding line formed by folding the upper part of the bag towards the side close to the passenger;

the upper edge contour line of the accordion folding part forms an included angle beta with the extension line of the gas generator, and the included angle beta ranges from 100 degrees to 130 degrees.

Through the technical scheme, as the upper edge outline of the accordion folding part is arranged close to the air outlet of the air generator, the direction of the upper edge outline of the accordion folding part is limited, and the folded body can be prevented from being contacted with the arms of a driver and unfolded smoothly along the direction of the upper edge outline of the folded body in the process of unfolding the accordion folding part.

Preferably, a first pull belt is arranged on a panel of one side, close to the passenger, of the bag, the first pull belt is respectively fixed on the upper portion and the lower portion of the bag, a first sealing portion is further arranged in the middle of the bag, the first sealing portion is respectively connected with two panels in the bag, the gas generator is used for igniting and producing expansion gas to enter the bag, under the traction effect of the first pull belt, the upper portion of the bag is bent towards the direction of the seat along the first sealing portion, and the first pull belt is kept in a straightened state when the bag forms an accordion folding portion.

Through the technical scheme, the first drawstring is kept in a straightened state when the bag forms the accordion folding part, so that the first drawstring can play a traction role in the inflation and unfolding process of the bag, the upper part of the bag can be quickly pulled back to the side close to the passenger, and the upper part of the bag can quickly protect the passenger;

meanwhile, the first stretching strap is in a straightening state, and can play a limiting role in unfolding of the folding part, so that the folding part of the accordion folding part can be stably unfolded along the folding line, and the folding strap cannot swing greatly due to the flooding of high-pressure gas, so that unnecessary injury is caused to passengers.

Preferably, the accordion fold portion has a fold line formed by at least one fold between an upper fixing point of the first draw strap and the first closing portion.

Through the technical scheme, the specific folding characteristics of the accordion folding part formed by folding the bag are limited, so that the first stretching strap can be kept in a straightened state, and the folding thickness of the accordion folding part can be effectively controlled.

Preferably, the outline of the lower edge of the accordion folding part is a fold line formed by the side folding of the lower part of the bag towards the side close to the passenger;

an included angle alpha is formed between the outline of the lower edge of the accordion folding part and the extension line of the gas generator, and the included angle alpha ranges from 100 degrees to 140 degrees;

the included angle alpha is larger than the included angle beta so that a conical structure is formed between the upper edge profile and the lower edge profile of the accordion folding portion.

According to the technical scheme, the upper edge profile and the lower edge profile of the accordion folding part are limited, on one hand, the angle is limited, so that the unfolding process of the rolling body can avoid the arms of drivers and passengers as much as possible, and on the other side, because the included angle formed between the upper edge profile and the gas generator is larger, the distance between one side, close to the gas generator, of the upper edge profile and the gas generator is shorter, and therefore, in the process of generating gas by the explosion of the gas generator, the unfolding speed of the rolling body can be improved through the arrangement of the conical structure.

Preferably, an upper portion of the bag is folded at least twice toward a side close to the occupant and a lower portion of the bag is folded at least once toward a side close to the occupant to form the accordion folded portion.

Preferably, a panel of one side of the bag close to the passenger is provided with a second drawstring which is respectively fixed at the upper part and the lower part of the bag;

the second drawstring and the first drawstring work together to draw the upper part of the bag to bend towards the seat along the first closing part.

Preferably, the upper part of the bag is provided with a second sealing part, and the second sealing part is respectively connected with two panels inside the bag;

the upper fixing point of the first pull belt and the upper fixing point of the second pull belt are both positioned on the second sealing part;

the lower fixing points of the first pull belt and the second pull belt are positioned at the lower part of the bag and distributed at intervals along the running direction of the vehicle.

The embodiment of the specification also provides a bag folding method of the vehicle seat far-end airbag device, which comprises the following steps:

the upper part and/or the lower part of the bag are/is turned over towards the side close to the passenger to form an accordion folding part, an included angle is formed between the edge contour line of the accordion folding part and the extension line of the gas generator, the included angle ranges from 100 degrees to 140 degrees, and the gas generator is arranged at the lower part of the bag, which is positioned at the rear side of the vehicle;

the bag is wound and/or folded along the axis in the direction close to the gas generator along the axis along the direction perpendicular to the edge contour line of the accordion folding part to form a folded body.

Preferably, the folding step of the accordion folding portion is as follows:

the upper part of the bag is folded towards the side close to the passenger to form a first folding structure;

folding the outer side of the first folding structure towards the side close to the passenger to form a second folding structure;

folding the outer side of the second folding structure towards the side close to the passenger to form a third folding structure;

and folding the inner lower part of the third folding structure towards the side close to the passenger to form the accordion folding part.

Compared with the prior art, the beneficial effects that above-mentioned at least one technical scheme that this description embodiment adopted can reach include at least:

by limiting the winding and/or folding direction of the bag forming roll-up body, the bag can effectively avoid the arms of passengers in a narrow space and can be unfolded smoothly, and the protection effect is achieved in a very short time, so that the performance advantage of the bag is fully exerted.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a pocket of a vehicle seat distal airbag device of the present application;

FIG. 2 is a schematic view of the vehicle seat distal airbag device of the present application when installed in a seat for inflation and deployment;

FIG. 3 is a schematic view of a pouch-forming roll-up in the present application;

fig. 4 is a schematic view of the pouch of the present application being deployed in steps after the gas generator is detonated to produce gas.

Reference numerals: 1. a pouch; 2. an opening; 3. a main drawstring; 4. a first pull strap; 5. a second drawstring; 6. a first closing portion; 7. a second closing portion; 8. a rolling body; 9. an accordion folding portion; 10. an axis; 11. a first fold line; 12. an upper edge contour line; 13. a lower edge contour line; 14. a first folding line; 15. a first folding structure; 16. a second folded line; 17. a second folded structure; 18. a third folded structure; 19. and a third fold line.

Detailed Description

Embodiments of the present application are described in detail below with reference to the accompanying drawings.

Other advantages and effects of the present application will become apparent to those skilled in the art from the present disclosure, when the following description of the embodiments is taken in conjunction with the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. The present application may be embodied or carried out in other specific embodiments, and the details of the present application may be modified or changed from various points of view and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It is noted that various aspects of the embodiments are described below within the scope of the following claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present application, one skilled in the art will appreciate that one aspect described herein may be implemented independently of any other aspect, and that two or more of these aspects may be combined in various ways. For example, apparatus may be implemented and/or methods practiced using any number and aspects set forth herein. In addition, such apparatus may be implemented and/or such methods practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should also be noted that the illustrations provided in the following embodiments merely illustrate the basic concepts of the application by way of illustration, and only the components related to the application are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided in order to provide a thorough understanding of the examples. However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details.

The following describes the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.

As shown in fig. 1, the embodiment of the present specification provides a vehicle seat distal airbag device including a gas generator (not shown in the drawings) and a bag 1. The bag 1 is a sealed cavity formed by sewing at least two panels along the periphery, and is provided with an opening 2 for inserting a gas generator at the lower part of the rear side of the vehicle. The pouch 1 is wound and/or folded to form a roll-up body 8 and then co-located with the gas generator on the side of the vehicle seat.

The side of the bag 1 close to the occupant is provided with a main drawstring 3, a first drawstring 4 and a second drawstring 5.

The main drawstring 3 covers the lower part of the bag 1, and two ends of the main drawstring 3 are fixedly connected with two side edges of the bag 1 respectively. Wherein, both side edges of the pouch 1 refer to both side edges of the pouch 1 in the vehicle traveling direction.

The upper ends of the first and second pull straps 4 and 5 are both fixed to the upper portion of the pouch 1, and the upper fixing point of the first pull strap 4 is located above the upper fixing point of the second pull strap 5. The lower end of the first pull belt 4 and the lower end of the second pull belt 5 are both fixed on the main pull belt 3, the lower fixing point of the first pull belt 4 and the lower fixing point of the second pull belt 5 are distributed at intervals along the running direction of the vehicle, and the lower fixing point of the first pull belt 4 is positioned between the lower fixing point of the second pull belt 5 and the gas generator.

As shown in fig. 1 and 2, the pouch 1 is provided with a first closing part 6 at the middle part and a second closing part 7 at the upper part of the pouch 1.

Wherein, the first sealing part 6 is respectively connected with two panels inside the bag 1. When the gas generator is exploded to generate expansion gas and enter the bag 1, the upper part of the bag 1 is bent towards the direction of the seat along the first closing part 6 under the combined traction action of the first pull belt 4 and the second pull belt 5, so that the upper part of the bag 1 effectively protects the passenger.

The second closing part 7 is respectively connected with two panels inside the bag 1. The upper fastening point of the first pull strap 4 and the upper fastening point of the second pull strap 5 are both located on the second closure portion 7.

The first closing portion 6 and the second closing portion 7 are non-inflatable regions on the pouch 1.

As shown in fig. 1 and 3, the steps of forming the rolled body 8 of the pouch 1 are as follows:

the upper part and/or the lower part of the bag 1 are/is turned over towards the side close to the passenger to form an accordion folding part 9, and the edge contour line of the accordion folding part 9 forms an included angle with the extension line of the gas generator, wherein the included angle ranges from 100 degrees to 140 degrees. Wherein, in this application embodiment, gas generator's extension line sets up along vertical direction.

The sachet 1 is rolled and/or folded along the axis 10 in a direction close to the gas generator, along the axis 10, perpendicular to the edge contour of the accordion fold, to finally form the convolution 8.

As shown in fig. 3 and 4, the folded body 8 formed by the above steps is mounted on the side of the vehicle seat. When the gas generator is ignited and generates inflation gas into the pouch 1, the bellows 8 is first unfolded into the accordion 9 along the edge contour of the accordion 9. In this process, before the upper structure of the roll-up body 8 contacts with the arm of the driver, there is enough space for the roll-up body 8 to be unfolded in the traveling direction, so that by defining the unfolding direction of the roll-up body 8 (i.e., the edge contour line of the accordion folded portion 9), when the roll-up body 8 contacts with the rear arm of the driver, the unfolding position of the roll-up body 8 in the traveling direction has passed over or is close to the front end position of the rear arm of the driver in the traveling direction, so that when the bag 1 continues to be unfolded vertically upwards or forwards in the traveling direction, excessive interference with the rear arm of the driver does not occur; the front arm of the driver is in a horizontal extending state or an inclined upward state (or may have an inclined downward state) in most cases, and the included angle relative to the vertical direction is 60-90 degrees, so that the vertical height of the front arm of the driver does not exceed the vertical height of the rear arm of the arm too much, and therefore, even if the bag 1 is continuously unfolded, too much interference with the front arm of the driver is not generated. In summary, by limiting the direction in which the bag 1 is wound and/or folded to form the folded body 8, the bag 1 can be smoothly unfolded while avoiding the arms of the occupant in a narrow space, and the protective effect can be achieved in a very short time, thereby fully exerting its performance advantages.

The front arm of the driver refers to the forearm of the driver.

Specifically, the upper edge contour 12 of the accordion folded portion 9 is a fold line formed by the upper portion of the bag 1 being folded sideways toward the occupant.

The upper edge contour 12 of the accordion folded portion 9 forms an angle beta with the extension of the gas generator, which angle beta ranges from 100 to 130 deg..

The lower edge contour line 13 of the accordion folded portion 9 forms a fold line for the side of the lower portion of the bag 1 toward the occupant.

The lower edge contour 13 of the accordion fold 9 forms an angle alpha with the extension of the gas generator, which angle alpha ranges from 100 deg. -140 deg..

Wherein the included angle α is larger than the included angle β so that the upper edge profile and the lower edge profile of the accordion folded portion form a tapered structure.

By defining the angles of the upper edge contour line 12 and the lower edge contour line 13 of the accordion folded portion 9 relative to the gas generator, the track route of the folded body 8 unfolded into the accordion folded portion 9 is further defined, so that the folded body 8 can be unfolded quickly without interference with the arms of a driver. Furthermore, because the upper edge contour of the accordion folding portion 9 is close to the side of the gas generator and the gas outlet of the gas generator, the arrangement of the conical structure is beneficial to the rapid diffusion of gas along the upper edge contour line 12 of the accordion folding portion 9, and can effectively accelerate the unfolding speed of the folded body 8. Meanwhile, the upper edge contour line 12 and the lower edge contour line 13 of the accordion folding portion 9 are defined with respect to the angle of the gas generator, and the length dimension of the accordion folding portion 9 (the distance between the upper edge contour line 12 and the lower edge contour line 13 of the accordion folding portion 9) can be further defined, so that the dimension after the folded body 8 is formed meets the dimension requirement of the installation position of the actual bag 1.

In the inflation and deployment process of the actual pouch 1, after the folded body 8 is unfolded to form the accordion folded portion 9, the accordion folded portion 9 is mainly unfolded along the folding line formed by folding a plurality of times. The upper edge contour line 12 is defined with respect to the angle of the gas generator, and the unfolding direction of the upper structure of the accordion folding portion 9 is also defined, and the unfolding direction of the upper structure is perpendicular to the upper edge contour line 12 of the accordion folding portion 9, so that when the upper structure of the accordion folding portion 9 is unfolded, the upper structure can be unfolded towards the direction deviating from the front arm of the driver, thereby reducing interference with the front arm of the driver, ensuring smooth inflation and unfolding of the bag 1, and effectively reducing secondary injury to the driver during the unfolding process of the bag 1.

Further, the first drawstring 4 remains straightened when the pouch 1 forms the accordion fold 9.

In the practical application process, the first stretching strap 4 is limited to be kept in a straightened state when the accordion folding part 9 is formed by the bag 1, so that the upper structure of the accordion folding part 9 can be stably unfolded along the direction perpendicular to the folding line, large and unstable swing caused by rapid filling of high-pressure gas can be avoided, and unnecessary injury to drivers and passengers is reduced.

Specifically, the upper portion of the bag 1 is folded at least twice toward the occupant side and the lower portion of the bag 1 is folded at least once toward the occupant side to form the accordion folded portion 9.

Wherein the accordion fold 9 has at least one fold forming a fold line between the upper fixing point of the first pull strap 4 and the first closure 6. As shown in fig. 3, the folding line between the upper fixing point of the first stretching strap 4 and the first closing portion 6 is the first folding line 11, by adopting the above folding manner, the first stretching strap 4 can be kept in a straightened state when the accordion folding portion 9 is formed by the bag 1, and the folded portions can be staggered for multiple times, so that the accordion folding portion 9 has a smaller thickness, and the whole structure is more compact.

In other embodiments, the upper portion of the bag 1 may be folded once near the passenger side, the outer side of the primary folding structure is folded once in a direction near the passenger side, and the outer side of the secondary folding structure is folded once in a direction far away from the passenger side, and the last folded portion is folded between the two former folded portions, so that the upper end fixing point of the drawstring is located between the last folded fold line and the first sealing portion 6, and thus the first drawstring 4 can be kept in a straightened state.

the upper part and/or the lower part of the bag 1 are/is turned sideways towards the passenger to form an accordion folding part 9, and the edge contour line of the accordion folding part 9 forms an included angle with the extension line of the gas generator, wherein the included angle ranges from 100 degrees to 140 degrees. Wherein the gas generator is provided at a lower portion of the pouch 1 at the rear side of the vehicle.

The envelope 1 is wound and/or folded along the axis 10 in a direction close to the gas generator, forming a convolution 8, along the axis 10, along a direction perpendicular to the edge contour of the accordion fold 9.

Wherein, as shown in fig. 1 and 3, the folding step of the accordion folding portion 9 is as follows:

the upper portion of the pouch 1 is folded over along the first fold line 14 towards the occupant-adjacent side to form a first fold structure 15.

The outer side of the first fold structure 15 is folded along the second fold line 16 toward the occupant side to form a second fold structure 17.

The outer side of the second fold 17 is folded along the first fold line 14 toward the occupant-side, forming a third fold 18.

The inner lower portion of the third folded structure 18 is folded along the third folding line 19 toward the occupant-approaching side to form the accordion folded portion 9.

The outer side of the folded structure means the side closer to the occupant, and the inner side of the folded structure means the side farther from the occupant.

Wherein the first fold line 14 and the second fold line 16 each extend obliquely downwards from the side of the upper part of the pouch 1 remote from the gas generator towards the gas generator.

The first fold line 14 forms an angle of 100 ° -130 ° with the axis 10 of the gas generator.

The second fold line 16 is located above the first fold line 14, and the end of the second fold line 16 remote from the gas generator passes through the region between the upper end fixing point of the first draw tape 4 and the upper end fixing point of the second draw tape 5.

Wherein the fold line formed by the first fold structure 15 and the fold line formed by the third fold structure 18 overlap the first fold line 14 and form the upper edge contour 12 of the accordion folded portion 9.

The second folding structure 17 forms a folding line that is a first folding line 11, and the first folding line 11 overlaps with the second folding line 16.

Further, the first fold line 14 forms an angle of 118 ° with the axis 10 of the gas generator.

The third fold line 19 extends obliquely downwards from the side of the lower part of the pouch 1 remote from the gas generator in a direction towards the gas generator.

The third fold line 19 forms an angle of 100-140 deg. with the axis 10 of the gas generator.

The lower part of the inner side of the third folding structure 18 is folded along the third folding line 19 to form a folding line, namely the lower edge outline of the accordion folding part 9.

In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment focuses on differences from other embodiments.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present application should be covered in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A vehicle seat far-end airbag apparatus comprising a gas generator and a bag that is sewn along a periphery by at least two panels to form a sealed cavity, and is provided with an opening into which the gas generator is inserted in a lower portion of a vehicle rear side, the bag being wound and/or folded to form a roll-up body and then being disposed on a vehicle seat side portion together with the gas generator, characterized in that the formation of the roll-up body comprises the steps of:

2. The vehicle seat distal airbag apparatus according to claim 1, wherein an upper edge contour line of the accordion folded portion is a fold line formed by a bag upper portion being folded sideways toward an occupant;

3. The vehicle seat far-end airbag apparatus according to claim 1, wherein a panel of a side of the bag close to the occupant is provided with a first draw strap fixed to an upper portion and a lower portion of the bag, respectively, a first closing portion is further provided in a middle portion of the bag, the first closing portion is connected to two panels, respectively, inside the bag, the gas generator is exploded to generate inflation gas to enter the bag, and under a traction effect of the first draw strap, the upper portion of the bag is folded toward the seat along the first closing portion, and the first draw strap is kept in a straightened state when the bag forms an accordion folded portion.

4. A vehicle seat distal airbag apparatus according to claim 3, wherein the accordion folded portion has a fold line formed by at least one fold located between an upper fixing point of the first draw strap and the first closing portion.

5. The vehicle seat distal airbag apparatus according to claim 2, wherein a lower edge contour line of the accordion folded portion is a fold line formed by a bag lower portion being folded sideways toward an occupant;

6. The vehicle seat distal airbag apparatus according to claim 4, characterized in that an upper portion of the bag is folded back toward a side close to the occupant at least twice and a lower portion of the bag is folded back toward the occupant at least once to form the accordion folded portion.

7. The vehicle seat distal airbag apparatus according to claim 4, wherein a panel of a side of the bag adjacent to the occupant is provided with a second pull strap fixed to an upper portion and a lower portion of the bag, respectively;

8. The vehicle seat distal airbag apparatus according to claim 7, wherein the bag upper portion is provided with a second closing portion which connects two panels respectively inside the bag;

9. A method of folding a pocket of a distal airbag apparatus for a vehicle seat, comprising the steps of:

10. The method for folding a bag of a vehicle seat distal airbag apparatus according to claim 9, wherein the folding step of the accordion folding portion is as follows: