WO2023058915A1

WO2023058915A1 - Side air bag device of vehicle

Info

Publication number: WO2023058915A1
Application number: PCT/KR2022/013297
Authority: WO
Inventors: 권태익; 산딘게파르; 구스타프손폰투스; 변종기
Original assignee: 아우토리브 디벨롭먼트 아베
Priority date: 2021-10-07
Filing date: 2022-09-06
Publication date: 2023-04-13
Also published as: KR102589990B1; KR20230050135A

Abstract

The present invention relates to a side air bag device of a vehicle, the device comprising: an air bag cushion built in the backrest of a seat, and expanding and spreading to correspond to a side of an upper body of a passenger when a side collision of the vehicle occurs; an inflator for generating a gas in response to an impact detection signal and supplying the gas to the air bag cushion; and a cover member for shielding the outer surface of the air bag cushion and the inflator and delimiting a side appearance of the backrest in which a mounting space is formed, wherein the cover member may have a configuration including: a first member manufactured to have a predetermined rigidity and delimiting a side appearance of the backrest; and a second member coupled with the first member and shielding the outer surface of the air bag cushion and the inflator, may allow the side air bag device to be installed at one side of the backrest and to be stably fixed, and may delimit the side appearance of the backrest by using the cover member having the predetermined rigidity.

Description

Side airbag device in car

The present invention relates to a side airbag device for a vehicle, and more particularly, to a side airbag device for a vehicle that prevents a passenger from lateral movement of a vehicle in the event of a side collision of the vehicle.

In general, an automobile airbag device is a safety device that protects occupants by rapidly inflating the airbag by injecting gas into the airbag according to a signal from an impact sensor when a vehicle crashes.

Such an airbag device is installed in a steering wheel, dashboard, seat, sidewall, etc. provided in a vehicle, and inflates toward the front or side of the occupant when the vehicle collides to protect the occupant.

That is, in automobiles, front airbags deployed in front of the driver's seat and passenger's seat, curtain airbags and side airbags deployed in the direction in which a side collision occurred (hereinafter referred to as 'impact side') to protect passengers, and knee airbags to protect passengers' knees An airbag or the like may be provided.

Side airbags include a so-called near side airbag that inflates and deploys between a passenger and a vehicle body component such as a door and protects an occupant from a vehicle body component that protrudes inward due to the impact of a side collision, There is a far side airbag or a center side airbag that restricts the movement of passengers moving inside the vehicle.

On the other hand, the side airbag is installed on one side of the backrest provided on the seat, and is drawn out of a cover installed on one side of the backrest and inflates and deploys to the side of the occupant in case of a side collision of the vehicle.

That is, the side airbag is mounted in a mounting space formed on one side of the backrest in a state in which the airbag cushion is folded, and a cover defining the side shape of the backrest is coupled to the outside of the mounting space. The cover of the backrest may be formed as a flat surface along the vertical direction, but is generally formed as a curved surface having various curvatures, and the cover is installed on the side surface of the backrest to define the shape of the side surface of the backrest.

To this end, a cover made of a synthetic resin material to have a certain rigidity is coupled to the side airbag according to the prior art.

However, when a cover manufactured using a hard material such as synthetic resin has excessively high rigidity, there is a problem in that the injury value increases by applying an impact to an occupant moving to the side when a vehicle collision occurs.

In order to solve this problem, a method of manufacturing a cover using a soft material with low rigidity such as fabric has been proposed, but in this case, there is a problem in that it is difficult to effectively limit the side shape of the backrest.

Therefore, it is required to develop a technology capable of minimizing the impact upon collision with an occupant while forming the backrest in the side shape.

(Patent Document 1) Korean Patent Registration No. 10-1866083 (published on June 11, 2018)

(Patent Document 2) Korean Patent Registration No. 10-1708213 (published on February 20, 2017)

An object of the present invention is to solve the above problems, and to provide a side airbag device for a vehicle capable of preventing lateral movement of the vehicle by moving the side of the occupant in the event of a side collision of the vehicle.

Another object of the present invention is to provide a side airbag device for a vehicle capable of stably fixing an airbag cushion and an inflator of a side airbag installed on one side of a backrest and defining a side shape of the backrest.

Another object of the present invention is to provide a side airbag device for a vehicle capable of preventing injury to an occupant by minimizing impact upon collision with the occupant.

In order to achieve the above object, the side airbag device for a vehicle according to the present invention is built into the backrest of a seat, and inflates and deploys to correspond to the side of the occupant's upper body in the event of a side collision of the vehicle. An inflator that generates gas and supplies it to the airbag cushion, and a cover member that shields outer surfaces of the airbag cushion and the inflator and defines a side surface of a backrest in which an installation space is formed, wherein the cover member is manufactured to have preset rigidity. and a first member that is coupled to the first member to define a side surface of the backrest and a second member that shields outer surfaces of the airbag cushion and the inflator.

As described above, according to the side airbag device for a vehicle according to the present invention, the side airbag device is installed and stably fixed on one side of the backrest, and the airbag cushion is inflated and deployed in the event of a side collision of the vehicle to prevent the lateral movement of the occupant. The effect that can be obtained is obtained.

According to the present invention, an effect of preventing injury to an occupant by limiting the shape of the side surface of the backrest by using a cover member having a certain rigidity and minimizing impact upon collision with the occupant is obtained.

1 is a front view of a side airbag device for a vehicle according to a first embodiment of the present invention;

Figure 2 is a side view of the side airbag device shown in Figure 1;

3 is an exploded view of the cover unit shown in FIG. 1;

4 is a cross-sectional view taken along line A-A' shown in FIG. 2;

6 and 7 are cross-sectional views of a side airbag device for a vehicle according to a second embodiment of the present invention, respectively.

8 is a perspective view of a side airbag device for a vehicle according to a third embodiment of the present invention;

9 is a cross-sectional view taken along line BB′ shown in FIG. 8;

Hereinafter, a side airbag device for a vehicle according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, the direction toward the steering centered on the seat of the vehicle is referred to as 'front', and the opposite direction is referred to as 'rear'. In addition, terms indicating directions such as 'left', 'right', 'upward' and 'downward' are defined as indicating respective directions based on the above-described front and rear.

In addition, hereinafter, the direction toward the occupant from the airbag cushion is referred to as 'inside', and the opposite direction is referred to as 'outside'.

Therefore, the front and rear (F, B) directions, the left and right (L, R) directions, and the inside (I) and outside (O) directions of the car can be expressed as horizontal directions, respectively, and the top and bottom (U) of the car , D) direction can be expressed as a vertical direction.

Although the configuration of the near side airbag device installed in the driver's seat is described in this embodiment, it should be noted that the present invention may be modified to be applicable not only to the near side airbag device but also to a far side airbag or a center side airbag.

[Example 1]

1 is a front view of a side airbag device for a vehicle according to a first embodiment of the present invention, and FIG. 2 is a side view of the side airbag device shown in FIG. 1 . And FIG. 3 is an exploded view of the cover unit shown in FIG. 1, and FIG. 4 is a cross-sectional view taken along the line A-A' shown in FIG.

As shown in FIGS. 1 and 2 , the side airbag device for a vehicle according to the first embodiment of the present invention is built into the backrest 12 of the seat 11 and responds to the side of the upper body of the occupant in the event of a side collision of the vehicle. It includes an airbag cushion 20 that is inflated and deployed as much as possible, and an inflator 30 that generates gas and supplies it to the airbag cushion 20 according to an impact detection signal when a side collision of a vehicle occurs.

Here, the airbag cushion 20 may be folded in a rolling or folding manner together with the inflator 30 connected to one side to be provided as a single package.

Therefore, hereinafter, the airbag cushion 20 and the inflator 30 are abbreviated as a package.

As shown in FIG. 1 , this package is mounted on one side of the backrest 12 provided on each seat 11 .

To this end, a mounting space 13 for mounting a package is provided at one side of the backrest 12, and the package can be mounted while being inserted into the mounting space 13.

Further, the side airbag device 10 for a vehicle according to the first embodiment of the present invention further includes a cover member 40 that shields the outer surface of the package and defines an outer shape of one side surface of the backrest on which the mounting space 13 is formed. do.

As shown in FIGS. 3 and 4 , the cover member 40 includes a first member 50 having preset stiffness and a second member 60 coupled to the first member 50 and shielding the outer surface of the package. can include

The first member 50 is made of a material with greater rigidity than the second member 60 to have a certain rigidity in order to shield the outer surface of the mounting space 13 formed in the package and the backrest 12 and to limit the shape of the outer surface of the backrest. It can be made using materials.

Also, the first member 50 may be formed in a substantially plate shape to correspond to the cross-sectional shape of the mounting space 13 formed in the backrest 12 .

The first member 50 may be formed as a straight surface or a curved surface having various curvatures according to the side shape of the backrest 12 .

The second member 60 surrounds and shields the outer surface of the package, and may be manufactured using a material having less rigidity than that of the first member 50 .

For example, the first member 50 may be manufactured to have a certain stiffness by compressing a needle felt.

The needle felt is a method of condensation by piercing with a craft needle, in which wool sliver is placed in a pattern and pierced with a branched felt needle to entangle each other.

Unlike ordinary needles, the needle felting needle has small protrusions on the surface of the needle body to entangle wool fibers. Needle felts having various three-dimensional shapes can be made using the needle felt needles.

As described above, the present invention applies the needle felt compressed by pressing the needle felt as the first member, thereby shielding the outer surface of the mounting space of the backrest and at the same time imparting a certain rigidity to effectively limit the shape of the outer surface of the backrest. .

Of course, the present invention is not necessarily limited thereto, and may be changed to manufacture the first member 50 using a synthetic resin material having a certain stiffness.

The second member 60 may be made of a fiber material or a non-woven fabric material.

As shown in FIG. 3 , the second member 60 may be formed in a substantially disk shape or a rectangular plate shape.

In addition, when the second member 60 is formed in a disk shape or a square plate shape, the body 61 disposed in a substantially rhombic shape so that each vertex is approximately located on the upper, lower, left and right sides, and the upper and lower ends of the body 61 It may include first and

second extensions

62 and 63 extending upward and downward, respectively.

As shown in FIG. 3 at the center of the body 61, the first member 50 and the package are disposed.

At this time, the first member 50 and the second member 60 may be coupled along the edge of the first member 50 by a sewing method. That is, as shown in FIGS. 2 to 4 , a seam line 41 may be formed at the edge of the first member 50 .

Here, the front and rear ends of the body 61 may be folded backward and forward, respectively, so as to surround the first member 50 and the package.

In addition, the first and

second extension portions

62 and 63 extending from the upper and lower portions of the body 61 may be folded downward and upward to surround the first member 50 and the package.

Here, a stud 31 coupled to a side surface of the backrest 12 may protrude from one side of the inflator 30 (see FIG. 1 ).

A pair of studs 31 may be formed on one side surface of the inflator 30, that is, on an inner surface facing the inside of the mounting space 13, spaced apart from each other by a predetermined interval in the vertical direction.

Therefore, insertion holes 64 into which studs 31 are inserted may be formed in the front and rear parts of the body 61 and the first and

second extension parts

62 and 63, respectively.

For example, a pair of insertion holes 64 into which a pair of studs 61 are inserted may be formed in the front and rear portions of the body 61 , respectively. In addition, one insertion hole 64 is formed in the first extension part 62 into which the stud 61 disposed on the upper part of the pair of studs 31 is inserted, and disposed in the lower part of the second extension part 63. One insertion hole 64 into which the stud 63 is inserted may be formed.

Therefore, as the stud 31 is inserted into each insertion hole 64 in a folded state to surround the first member 50 and the package, the second member 60 is continuously folded without releasing the folded state. state can be maintained.

In a state where the package is placed inside the cover member 40 and folded to cover the package, the side airbag device 10 is inserted into the mounting space 13 of the backrest 12 and mounted. Here, a cushion member (not shown) surrounding the outer surface of the backrest 12 and a seat member (not shown) made of fabric or leather may be further installed outside the mounting space 13 .

In this way, the present invention installs and stably fixes the side airbag device on one side of the backrest, and inflates and deploys the airbag cushion in the event of a side collision of the vehicle to prevent lateral movement of the occupant.

In addition, the present invention can prevent injury to the occupant by limiting the shape of the side of the backrest by using a cover member having a certain rigidity and minimizing the impact upon collision with the occupant.

Meanwhile, in this embodiment, the first member 50 has been described as being disposed inside the second member 60 together with the package, but the present invention is not necessarily limited thereto.

For example, FIG. 5 is a cross-sectional view showing a modified example of the side airbag device of a vehicle shown in FIG. 4 .

As shown in FIG. 5 , the first member 50 may be disposed outside the second member 60 .

A second member 60 is disposed on one side of the first member 50 and on the inside facing the inside of the mounting space 13, and the first member 50 and the second member 60 are of the first member 50. It can be joined by sewing along the edge.

So, the sewing line 41 is formed at a position spaced apart from the edge of the first member 50 by a predetermined interval.

In this way, according to the present invention, the package may be folded to enclose the package using the second member in a state in which the first member and the second member are coupled.

Therefore, as shown in FIG. 5, the present invention, when the front-back width of the first member is greater than the front-back width of the package, the first member is coupled to the outer surface of the second member, and the second member is used. It can be attached to the backrest of the seat while the package is wrapped.

[Example 2]

A side airbag device 10 for a vehicle according to the second embodiment of the present invention has a configuration similar to that of the side airbag device 10 for a vehicle according to the first embodiment described with reference to FIGS. 1 to 4 , except that the first First and second

bent portions

51 and 52 are formed at the front and rear ends of the member 50, respectively.

That is, the mounting space 13 formed in the backrest 12 is formed to have a constant volume.

Therefore, in the present embodiment, the first member 50 is bent in the direction toward the package at the front and rear ends, that is, toward the inside of the mounting space 13, so as to increase the bonding force coupled to the mounting space 13. Second

bent parts

51 and 52 are further included.

Here, the width of the first member 50 in the front-back direction and the width in the left-right direction of the first and second

bent parts

51 and 52 coupled to the inside of the mounting space 13 are the volume of the mounting space 13, that is, It can be changed according to various conditions, such as the width of the mounting space 13 in the front-back direction and the depth in the left-right direction, and the shape and standard of the frame installed inside the backrest 12.

For example, as shown in FIG. 6 , the width of the first member 50 is larger than the width of the package in the front and rear direction so as to correspond to the mounting space 13 .

The first and second

bent parts

51 and 52 respectively bent at the front and rear ends of the first member 50 are inserted into the mounting space 13 and coupled thereto.

At this time, the second member 60 may be folded to surround the package disposed inside in a state in which the second member 60 is coupled to the first member 50 by a sewing method.

Alternatively, as shown in FIG. 7 , the width of the first member 50 in the front and rear direction may be formed to correspond to the width of the package in the front and rear direction.

The first and second

bent parts

At this time, the second member 60 may be folded so as to entirely enclose the first member 50 and the package disposed inside in a state in which the second member 60 is coupled to the first member 50 by a sewing method.

As described above, according to the present invention, the side airbag device inserted into the mounting space of the backrest can be firmly fixed by forming bent portions inserted into the mounting space of the backrest at the front and rear ends of the first member, respectively.

[Example 3]

FIG. 8 is a perspective view of a side airbag device for a vehicle according to a third embodiment of the present invention, and FIG. 9 is a cross-sectional view taken along line BB′ of FIG. 8 .

As shown in FIGS. 8 and 9 , the side airbag device 10 for a vehicle according to the third embodiment of the present invention is the side airbag device for a vehicle according to the first embodiment described with reference to FIGS. 1 to 4 ( 10), except that the first member 50 may include third and

fourth members

53 and 54 for accommodating the package therein and shielding the outer surface of the package.

As shown in FIG. 9 , the third member 53 and the fourth member 54 may respectively have cross sections of '┏┓' and '┗┛' shapes when viewed from above.

To this end, at the front and rear ends of the third member 53 and the fourth member 54, the first and second

bent portions

51 and 52 are bent to face each other toward the inside and outside of the mounting space 13, respectively. can be formed

That is, the third member 53 and the fourth member 54 may be formed in a substantially hexahedral shape with open inner and outer surfaces, respectively.

Thus, when the third and

fourth members

53 and 54 are coupled to each other, cross sections may form substantially rectangular frame shapes.

Accordingly, the package may be disposed in the inner space of the third and

fourth members

53 and 54 coupled to each other, and the outer surface may be shielded by the third and

fourth members

53 and 54 .

The third and

fourth members

53 and 54 may be opened and closed by rotating around a hinge shaft installed at one end, for example, the front end.

In this embodiment, the second member 60 has a function of shielding a portion of the outer surface of the third and

fourth members

53 and 54 coupled to each other and maintaining the coupled state of the third and

fourth members

53 and 54. do

To this end, the rear end of the second member 60 is coupled to the second bent portion 52 formed at the rear end of the third member 53 in a sewing manner, and the front end of the second member 60 is attached to the inflator 30. An insertion hole 64 into which the formed stud 31 is inserted may be formed.

Alternatively, on one side of the fourth member 54, as shown in FIGS. 8 and 9, an insertion protrusion 55 or a hook inserted into the insertion hole 64 of the second member 60 may be protruded. .

That is, the third and

fourth members

53 and 54 constituting the first member 51 are axially rotated around the hinge member on one side for an opening operation, and the third and

fourth members

53 and 54 are opened. ) is accommodated in the inner space of the package.

And the third and

fourth members

53 and 54 are axially rotated around the hinge member on one side to perform a closing operation, and the closed third and

fourth members

53 and 54 are the second member 60 As the stud 31 of the inflator 30 or the insertion protrusion 55 formed on the fourth member 54 or the hook is inserted into the insertion hole 64 of the inflator 30, the mutually coupled state can be continuously maintained.

On the other hand, when a side collision of the vehicle occurs, the inflator 30 generates gas by igniting gunpowder according to the collision detection signal, and the airbag cushion 20 receives the gas generated by the inflator 30, and the second member ( 60) is broken or damaged, and then expands to the outside of the mounting space 13 of the first member 50 and the backrest 12. Then, the airbag cushion 20 expands and deploys forward and upward from the side of the occupant to constrain the side of the occupant, thereby preventing the occupant from lateral movement.

Through the process as described above, the present invention can prevent the side movement of the occupant by installing and stably fixing the side airbag device on one side of the backrest and inflating and deploying the airbag cushion in the event of a side collision of the vehicle.

Although the invention made by the present inventors has been specifically described according to the above embodiments, the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention.

The present invention is applied to a technology for a side airbag device of a vehicle in which a side airbag device is installed and stably fixed on one side of a backrest and a cover member having a certain rigidity is used to define a side shape of the backrest.

Claims

An airbag cushion built into the backrest of the seat and inflated and deployed to correspond to the side of the occupant's upper body in the event of a side collision of the vehicle;

An inflator that generates gas by an impact detection signal and supplies it to the airbag cushion; and

a cover member for shielding outer surfaces of the airbag cushion and the inflator and defining a side surface of a backrest in which an installation space is formed;

The cover member is manufactured to have a preset rigidity and includes a first member defining the side surface of the backrest and

and a second member coupled to the first member and shielding outer surfaces of the airbag cushion and the inflator.
According to claim 1,

The side airbag device of a vehicle according to claim 1 , wherein the first member is manufactured using a material having greater rigidity than the second member to have rigidity for shielding an outer surface of the mounting space and defining an outer shape of the backrest. .
According to claim 2,

The first member is provided with a compressed needle felt by pressing the needle felt,

The side airbag device of a vehicle, characterized in that the second member is provided with a fiber material or a non-woven fabric material.
According to claim 2,

The second member is a body formed in a plate shape,

Includes first and second extensions extending upward and downward from the upper and lower ends of the body, respectively;

The side airbag device of a vehicle, characterized in that the front and rear parts of the body and the first and second extension parts are folded to surround the airbag cushion and the inflator.
According to claim 2,

The first member is coupled to the second member by a seam line formed along an edge of the first member,

A side airbag device for a vehicle, characterized in that accommodated inside the second member together with the airbag cushion and the inflator.
According to claim 2,

The first member is coupled to the second member by a seam line formed along an edge of the first member,

A side airbag device for a vehicle, characterized in that disposed outside the second member.
According to claim 2,

A stud coupled to a backrest is formed on one surface of the inflator,

An insertion hole into which the stud is inserted is formed in the second member in a folded state to surround the airbag cushion and the inflator.
According to claim 2,

First and second bent portions are formed at both ends of the first member to be inserted into the mounting space of the backrest, respectively,

The first member and the first and second bent parts are adjusted in size to correspond to an installation space.
In the second

The first member includes third and fourth members for accommodating the airbag cushion and the inflator in an internal space and shielding an outer surface,

The third and fourth members are each formed in a hexahedron shape with open surfaces facing each other,

A side airbag device for a vehicle, characterized in that it opens and closes by pivoting around a hinge member installed at one end.
In the ninth,

One end of the second member is coupled to one end of the third member in a sewing manner,

An insertion hole into which a stud formed in the inflator or an insertion protrusion formed in the fourth member or a hook is inserted is formed at the other end of the second member.