KR20240099876A - Far side airbag apparatus for vehicle - Google Patents

Abstract

It relates to a far side airbag device for a car, which includes an airbag cushion that inflates and deploys to correspond to the side of the occupant's upper body during a side collision of the car, an inflator that generates gas according to an impact detection signal and supplies it to the airbag cushion during a side collision of the car, and The airbag cushion and the inflator are accommodated therein and include an airbag cover mounted on the backrest of the seat, wherein the airbag cover is connected to the backrest by a stud bolt coupled to the inflator and a fixing member connecting the airbag cover and the backrest frame. By providing a configuration that is fixed in close contact with the frame, when the airbag cover is deformed by the airbag cushion received inside in a folded state, it is possible to prevent the adhesion between the deformed airbag cover and the backrest frame from deteriorating. .

Description

Far side airbag device of automobile {FAR SIDE AIRBAG APPARATUS FOR VEHICLE}

The present invention relates to a far side airbag device for a vehicle, and more specifically, to a far side airbag device for a vehicle that protects occupants by preventing collision between occupants during 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 detection sensor during a car collision.

These airbag devices are installed on steering wheels, dashboards, seats, and side walls of automobiles, and inflate toward the front or sides of the occupants when the vehicle crashes to protect the occupants.

In other words, the car includes frontal airbags that deploy in front of the driver and passenger seats, curtain airbags and side airbags that deploy in the direction in which the side collision occurred (hereinafter referred to as the 'collision side') to protect passengers, and knee airbags that protect the passengers' knees. Airbags, etc. may be provided.

Side airbags include a so-called near side airbag that inflates and deploys between the passenger and vehicle body components such as doors and protects the occupants from vehicle body components that protrude inward due to the impact of a side collision; There is a far side airbag or center side airbag that restricts the movement of occupants moving inside the vehicle.

In the event of a car crash, the far side airbag is deployed between the occupants and the occupants seated next to them to prevent the occupants from colliding with each other, reduce the impact on the occupants, and prevent the occupants from being thrown out of the car by the impact. It functions to prevent

For example, the present applicant has filed a patent application disclosing the configuration of a far side airbag device in Patent Document 1 and Patent Document 2 below.

Meanwhile, in order to perform the above-mentioned function, the far side airbag must be able to stably support the occupant and absorb the impact when the occupant collides with the occupant.

For example, Figure 1 is a diagram showing a deployed state of a far side airbag according to the prior art, and Figures 2 and 3 are diagrams showing an airbag cover accommodating the airbag cushion shown in Figure 1 installed on the backrest, respectively.

Figure 2 shows a front view of the airbag cover coupled to the backrest as seen from the front, and Figure 3 shows a plan view of the airbag cover seen from the top.

As shown in FIG. 1, the far side airbag device 10 according to the prior art includes an airbag cushion 20 that inflates and deploys to correspond to the side of the occupant's upper body during a side collision of a vehicle, and an impact detection signal when a side collision of a vehicle occurs. It includes an inflator 30 that generates gas and supplies it to the airbag cushion 20.

The airbag cushion 20 is folded by a rolling or folding method, and then placed inside the airbag cover 40 together with the inflator 30 on one side of the backrest frame 12 of the seat 11 and on the inner side facing the other occupant. It is installed.

For example, the airbag cover 40 is composed of an inner cover and an outer cover that are coupled to each other to form a roughly hexahedral shape, and the outer cover has one end connected to the inner cover so that the airbag cushion 20 can be inflated and deployed, for example. It rotates around the rear end.

However, the airbag cover 40 applied to the far side airbag device 10 according to the prior art is deformed by the airbag cushion 20 and the inflator 30 accommodated therein.

That is, the airbag cover 40 may be deformed to have an approximately central portion in the vertical direction convex, as shown in FIG. 2, depending on the folded shape or state of the airbag cushion 20 accommodated therein.

In this way, when the central portion of the airbag cover 40 in the vertical direction is deformed to be convex, there is a problem in that the adhesion between the airbag cover 40 and the backrest frame 12 becomes poor.

In addition, as shown in FIG. 3 of the airbag cover 40, when the approximately central portion in the front-back direction changes to become convex, the airbag cover 40 rotates in the left or right direction about the convex central portion, and the airbag cover ( There was a problem that the adhesion between 40) and the backrest frame 12 was poor.

Republic of Korea Patent Registration No. 10-1916007 (announced on November 8, 2018) Republic of Korea Patent Registration No. 10-1781387 (announced on February 20, 2017)

The purpose of the present invention is to solve the problems described above, and is to provide a far side airbag device for a vehicle that inflates and deploys between occupants when a side collision occurs in the vehicle, thereby triggering a collision between the occupants.

Another object of the present invention is to provide a far side airbag device for a vehicle that can prevent poor adhesion between the airbag cover and the backrest frame due to deformation of the airbag cover where the airbag cushion and inflator are accommodated.

In order to achieve the above-mentioned object, the far side airbag device of the automobile according to the present invention includes an airbag cushion that inflates and deploys to correspond to the side of the occupant's upper body during a side collision of the automobile, and gases generated by an impact detection signal during a side collision of the automobile. An inflator that generates and supplies the airbag cushion to the airbag cushion, and an airbag cover that accommodates the airbag cushion and the inflator therein and is mounted on the backrest of the seat, wherein the airbag cover includes a stud bolt coupled to the inflator, the airbag cover, and the backrest. It is characterized in that it is fixed in close contact with the backrest frame by a fixing member that couples the frame.

In addition, the far side airbag device of an automobile according to the present invention includes an airbag cushion that inflates and deploys to correspond to the side of the occupant's upper body during a side collision of the automobile, and gas is generated by an impact detection signal and supplied to the airbag cushion during a side collision of the automobile. An inflator, the airbag cushion and the inflator are accommodated therein, and an airbag cover is mounted on the backrest of the seat, and the airbag cover includes a stud bolt coupled to the inflator and a support provided on a surface of the airbag cover that contacts the backrest frame. It is characterized in that it is fixed in close contact with the backrest frame by a member.

In addition, the far side airbag device of an automobile according to the present invention includes an airbag cushion that inflates and deploys to correspond to the side of the occupant's upper body during a side collision of the automobile, and gas is generated and supplied to the airbag cushion by an impact detection signal during a side collision of the automobile. An inflator, an airbag cover that accommodates the airbag cushion and inflator therein and is mounted on the backrest of the seat, wherein the airbag cover includes a stud bolt coupled to the inflator, a fixing member that couples the airbag cover and the backrest frame, and The airbag cover is fixed in close contact with the backrest frame by a support member provided on one surface that contacts the backrest frame.

As described above, according to the far side airbag device for a vehicle according to the present invention, when the airbag cover is deformed by the airbag cushion received in a folded state, the adhesion between the deformed airbag cover and the backrest frame becomes poor. The effect of being able to prevent this is achieved.

That is, according to the present invention, by applying a fixing member to the airbag cover to firmly fix the airbag cover and the backrest frame, the effect of preventing poor adhesion between the airbag cover and the backrest frame is obtained.

In addition, according to the present invention, by applying a support member to the airbag cover and rotating the rear end of the deformed airbag cover outward to bring the front end of the airbag cover into close contact with the backrest frame, poor adhesion between the airbag cover and the backrest frame is prevented. The effect of being able to do it is achieved.

1 is a diagram showing a deployed state of a far side airbag according to the prior art;
FIGS. 2 and 3 are diagrams showing the airbag cover accommodating the airbag cushion shown in FIG. 1 installed on the backrest, respectively;
Figure 4 is a diagram showing a state in which the far side airbag device of an automobile is installed on the backrest frame according to a preferred embodiment of the present invention;
Figure 5 is a view showing the airbag cover shown in Figure 4 in a deployed state;
Figure 6 is a cross-sectional view taken along line AA' shown in Figure 4;
Figure 7 is a view showing the airbag cover and backrest frame combined;
8 is an exploded perspective view of an airbag cover according to another embodiment of the present invention;
Figure 9 is an enlarged perspective view of the support member viewed from a different angle.

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

Figure 4 is a diagram showing the far side airbag device of a vehicle installed on the backrest frame according to a preferred embodiment of the present invention, and Figure 5 is a diagram showing the airbag cover shown in Figure 4 in a deployed state.

Hereinafter, the direction toward the front of the car centered on the seat 11 is referred to as 'front (F)', and the direction opposite to the front, in which the backrest is installed centered on the seat 11, is referred to as 'rear (B)'. It is said. And terms indicating directions such as 'left (L)', 'right (R)', 'upward (U)', and 'downward (D)' indicate each direction based on the front and rear above. It is defined as

This embodiment will be described by referring to the configuration of the far side airbag device 10 shown in FIG. 1. Accordingly, the same components will be described using the same reference numerals.

As shown in FIGS. 1 and 4, the far side airbag device 10 of a vehicle according to a preferred embodiment of the present invention includes an airbag cushion 20 that is inflated and deployed to correspond to the side of the occupant's upper body during a side collision of the vehicle; In the event of a side collision of a car, an inflator 30 generates gas according to an impact detection signal and supplies it to the airbag cushion 20, and the airbag cushion 20 and inflator 30 are accommodated inside, and the backrest 12 of the seat 11 ) includes an airbag cover 40 mounted on the

The airbag cushion 20 is expanded and deployed forward, upward, and downward from the backrest 12 of the seat 11 to correspond to the pelvis area and entire upper body of the occupant, that is, the sides of the occupant's abdomen, chest, neck, and head area. expands and unfolds. In this way, the airbag cushion 20 inflates and deploys between the occupant and another occupant (hereinafter referred to as 'opposite occupant') and functions to safely protect the occupant from collision between occupants due to the impact of a side collision.

For this purpose, the airbag cushion 20 includes an inner panel in contact with the right side of the occupant, that is, the driver, and an outer panel in contact with the left side of the passenger on the opposite side, and the edges of the inner and outer panels are joined by sewing, etc. It may be formed in the shape of a bag.

The airbag cushion 20 is formed to be inflated and deployed in a substantially circular, oval, or hexahedral shape, and can be inflated and deployed from the right side of the occupant forward, upward, and downward.

The inflator 30 functions to ignite gunpowder inside and supply gas through an inlet provided on one side of the airbag cushion 20 when a car crash occurs.

This inflator 30 is formed in a substantially cylindrical shape, and a pair of stud bolts 31 that penetrate the airbag cover 20 and are coupled to the backrest frame 12 may be installed on one side of the inflator 30.

As shown in FIGS. 4 and 5, the airbag cover 40 may include an inner cover 41 and an outer cover 42 that are coupled to each other to form a substantially rectangular parallelepiped shape.

The inner cover 41 and the outer cover 42 may each be formed in a substantially hexahedral shape with open surfaces on which they are joined. Here, the inner cover 41 is described as being disposed on the left side as seen in FIG. 5 so as to be in contact with the backrest frame 12, and the outer cover 42 is disposed on the right side to face the other occupant.

When the airbag cushion 20 is inflated and deployed, the outer cover 42 rotates around the connection portion 43 connected to the rear end of the inner cover 41 to pull the airbag cushion 20 out.

A coupling protrusion 44 and a coupling hole 45 may be formed on the inner cover 41 and the outer cover 42 so that they can be coupled to each other.

That is, a plurality of coupling holes 45 each having coupling holes are formed on the front, upper, and lower edges of the inner cover 41, and a plurality of coupling holes 45 each coupled to the plurality of coupling holes 45 are formed on the outer cover 42. A protrusion 44 may be formed. Here, each coupling protrusion 44 may be formed in a hook shape that is caught on the coupling hole 45 so as not to be separated by external vibration or impact while coupled to each coupling hole 45.

In addition, a pair of through holes 46 may be formed in the inner cover 41 to allow a pair of stud bolts 31 coupled to the inflator 30 to pass through.

For example, a pair of stud bolts 31 are each fastened to one side of the inflator 30 at a certain distance apart along the vertical direction, so that a pair of through holes 46 each have a pair of stud bolts ( 31), that is, it may be formed at approximately the center and lower portion of the inner cover 41, respectively.

Therefore, the pair of stud bolts 31 are connected to the inflator 30 to the introduction part of the airbag cushion 20, and are connected to the fixing hole formed in the backrest frame 12 through each through hole 46 of the inner cover 41. It is coupled to and can be firmly fixed by tightening the nut.

Meanwhile, in the prior art, the airbag cover 40 and the backrest frame 12 are coupled using a pair of stud bolts 31 disposed approximately in the center and lower part of the airbag cover 40. Accordingly, when deformation occurs in the airbag cover 40 due to the restoring force of the folded airbag cushion 20 to be restored to the deployed state, the upper part of the airbag cover 40 and the backrest frame 12 as shown in FIG. 2 ), as a gap occurs between them, the adhesion condition becomes poor.

To solve this problem, in this embodiment, as shown in FIG. 5, a fixing member 50 that fixes the airbag cover 40 and the backrest frame 12 is applied.

For example, FIG. 6 is a cross-sectional view taken along line A-A' shown in FIG. 4, and FIG. 7 is a view showing the airbag cover and the backrest frame combined.

As shown in FIGS. 5 and 6, the fixing member 50 may be formed in a substantially bolt shape using a metal material or synthetic resin material.

That is, the fixing member 50 may include a head portion 51 formed in a substantially disk shape, and a fixing protrusion 52 that penetrates the inner cover 41 and the backrest frame 12 and is fixed thereto.

This fixing member 50 passes through the fixing hole 47 formed in the inner cover 41 of the airbag cover 40 and is press-fitted to the backrest frame, or by forming a thread on the outer peripheral surface of the fixing protrusion 52 and attaching the nut. By fastening the back, the airbag cover (40) and backrest frame (12) can be firmly fixed.

Of course, the present invention may be modified to be formed integrally with the airbag cover 40 when molding the airbag cover 40.

For example, the fixing member 50 may be molded integrally with the airbag cover 40 using the same material as the airbag cover 40, for example, synthetic resin.

Alternatively, the fixing member 50 may be manufactured using a metal material and integrally molded with the airbag cover 40 using an insert molding method when manufacturing the airbag cover 40.

In order to prevent poor adhesion between the top of the airbag cover 40 and the backrest frame 12, the fixing member 50 is located above the center of the airbag cover 40, that is, approximately at the bottom of the airbag cover 40. It is desirable to place it between the top and the center.

One or more fixing members 50 may be provided. That is, the number and arrangement positions of the fixing members 50 may vary depending on the shape of the airbag cover 40 being deformed.

As such, the present invention applies a fixing member to the airbag cover to firmly fix the airbag cover and the backrest frame, thereby preventing poor adhesion between the airbag cover and the backrest frame as shown in FIG. 7.

Meanwhile, in the prior art, the airbag cover 40 and the backrest frame 12 are coupled using a pair of stud bolts 31 arranged on one straight line on one surface of the airbag cover 40. Accordingly, when deformation of the airbag cover 40 occurs due to the state of the folded airbag cushion 20, the airbag cover 40 moves to the left or right around the convexly deformed central portion as shown in FIG. 3. As it rotates, a gap occurs between the side opposite to the direction of rotation and the backrest frame 12, resulting in poor adhesion.

To solve this problem, in another embodiment of the present invention, a support member 60 that supports the inner cover 41 in close contact with the backrest frame 12 can be applied to the airbag cover 40.

Figure 8 is an exploded perspective view of an airbag cover according to another embodiment of the present invention, and Figure 9 is an enlarged perspective view of the support member viewed from a different angle.

As shown in FIGS. 8 and 9, the support member 60 may be provided as a block whose cross-section has a substantially right-angled triangle shape.

For example, the support member 60 may be formed at an angle so as to contact the backrest frame 12 and support the inner cover 41, so that the thickness becomes thicker toward the rear as seen in FIG. 9.

Therefore, the rear end of the inner cover 41 is rotated outward by the support member 60 to be away from the backrest frame 12, and the front end of the inner cover 41 is rotated inward to be closer to the backrest frame 12, thereby forming a backrest frame 12. It can be in close contact with the frame 12.

This support member 60 is manufactured separately from the airbag cover 40 using metal or synthetic resin materials, and can be coupled to the inner surface of the inner cover 41 using assembly protrusions, etc.

Alternatively, the support member 60 may be molded integrally with the airbag cover 40 when the airbag cover 40 is molded.

One or more such support members 60 may be provided.

For example, as shown in FIG. 9, the support members 60 are provided in pairs, and each support member 60 is located around a through hole 46 through which a pair of stud bolts 31 are coupled. can be formed.

Of course, the present invention is not necessarily limited to this, and may be modified to apply one or three or more support members 60.

In addition, the position of each support member 60 can be changed in various ways, but in order to bring the front end of the airbag cover 40 and the backrest frame 12 into close contact with each other, the airbag cover 40 is positioned in a certain direction, that is, the airbag cover It is preferable to arrange a plurality of support members 60 in a row on an imaginary line along the vertical direction on the inner surface of the airbag cover 40 so that the 40 rotates counterclockwise when viewed from the top.

In addition, in this embodiment, the deformation value is measured for each position where a plurality of support members are placed in the actual airbag cover 40, and the height of the rear end of each support member 60 is set to be variously changed based on each measured value. It may be possible.

As such, the present invention applies a support member to the airbag cover and rotates the rear end of the modified airbag cover outward to bring the front end of the airbag cover into close contact with the backrest frame, thereby preventing poor adhesion between the airbag cover and the backrest frame. You can.

Meanwhile, in the above embodiments, it was explained that the fixing member 50 and the support member 60 are applied separately to the airbag cover 40, but the present invention applies the fixing member 50 and the support member 60 at the same time. It may be changed.

Accordingly, the present invention applies a fixing member and a support member together to bring the upper part of the airbag cover into close contact with the backrest frame, and at the same time, the front end of the airbag cover comes into close contact with the backrest frame to firmly fix the airbag cover to the backrest frame.

Although the invention made by the present inventor has been described in detail according to the above-mentioned embodiments, the present invention is not limited to the above-described embodiments and, of course, can be changed in various ways without departing from the gist of the invention.

The present invention is applied to the far side airbag device technology of an automobile that can firmly fix the airbag cover and the backrest frame by tightly contacting them, even if the airbag cover is deformed by the airbag cushion accommodated in a folded state inside.

10: Far side airbag device in automobiles
11: Seat 12: Backrest frame
20: Airbag cushion
30: Inflator 31: Stud bolt
40: Airbag cover 41,42: Inner, outer cover
43: connection part 44: coupling protrusion
45: Combined study 46: Through hole
47: fixed ball
50: fixing member 51: head
52: fixed protrusion
60: Support member

Claims (8)

An airbag cushion that inflates and deploys to correspond to the side of the occupant's upper body during a side collision of a car;
An inflator that generates gas according to an impact detection signal in the event of a car side collision and supplies it to the airbag cushion, and
An airbag cover that accommodates the airbag cushion and inflator therein and is mounted on the backrest of the seat,
The far side airbag device of an automobile, wherein the airbag cover is fixed in close contact with the backrest frame by a stud bolt coupled to the inflator and a fixing member connecting the airbag cover and the backrest frame. According to paragraph 1,
The far side airbag device of an automobile, wherein the fixing member is formed in a bolt shape including a head and a fixing protrusion, and is coupled through the airbag cover and the backrest frame. According to paragraph 2,
The far side airbag device of an automobile, wherein the fixing member is integrally molded with the airbag cover when manufacturing the airbag cover. An airbag cushion that inflates and deploys to correspond to the side of the occupant's upper body during a side collision of a car;
An inflator that generates gas according to an impact detection signal during a side collision of a car and supplies it to the airbag cushion,
An airbag cover that accommodates the airbag cushion and inflator therein and is mounted on the backrest of the seat,
The airbag cover is fixed in close contact with the backrest frame by a stud bolt coupled to the inflator and a support member provided on a surface of the airbag cover that contacts the backrest frame. . According to clause 4,
The far side airbag device of an automobile, wherein the support member is inclined so that its thickness increases from the front end to the rear end of the airbag cover. According to clause 5,
The far side airbag device of an automobile, wherein the support member is integrally molded with the airbag cover when manufacturing the airbag cover. According to clause 5,
The support member is provided as one or more,
When provided in plural, the far side airbag device of an automobile is arranged in a row along the vertical direction on one surface of the airbag cover so as to rotate the airbag cover in one direction. An airbag cushion that inflates and deploys to correspond to the side of the occupant's upper body during a side collision of a car;
An inflator that generates gas according to an impact detection signal during a side collision of a car and supplies it to the airbag cushion,
An airbag cover that accommodates the airbag cushion and inflator therein and is mounted on the backrest of the seat,
The airbag cover is in close contact with the backrest frame by a stud bolt coupled to the inflator, a fixing member connecting the airbag cover and the backrest frame, and a support member provided on a surface of the airbag cover that contacts the backrest frame. A far side airbag device for an automobile, characterized in that it is fixed in a fixed state.

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