KR102387635B1 - Far side airbag apparatus for vehicle - Google Patents

Abstract

A far side airbag device for a vehicle, which is embedded in a seat backrest and inflates and deploys to correspond to the side of an occupant's upper body in the event of a side collision of the vehicle Provided is a configuration including an inflator that supplies the airbag cushion and a movement preventing member installed on the airbag cushion and hanging on the shoulder of the occupant to prevent the occupant from slipping out of the airbag cushion and moving in the lateral direction of the vehicle, between occupants By applying a movement preventing member to the airbag cushion deployed on the occupant and hanging it on the shoulder of the occupant, it is possible to prevent the occupant from slipping out of the airbag cushion, thereby safely protecting from a collision between occupants.

Description

FAR SIDE AIRBAG APPARATUS FOR VEHICLE

The present invention relates to a far side airbag device for a vehicle, and more particularly, to a far side airbag device for a vehicle that protects occupants by preventing a collision between occupants during a side collision of the vehicle.

BACKGROUND ART In general, an automobile airbag device is a safety device for protecting an occupant by rapidly inflating the airbag by injecting gas into the airbag according to a signal of an impact sensor during a vehicle collision.

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

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

The side airbag includes a so-called near side airbag that inflates and deploys between the passenger and the vehicle body component such as the door and protects the occupant from the vehicle body component member that protrudes inward due to the impact of a side impact, and the recoil of a side impact There is a far side airbag or a center side airbag that restricts the movement of occupants moving to the inside of the vehicle.

The far side airbag is deployed between an occupant and a occupant seated next to the vehicle when a collision accident occurs to prevent mutual collision of occupants, reduce the impact applied to the occupant, and prevent the occupant from being thrown out of the vehicle due to the impact. function to prevent it.

For example, the present applicant has disclosed a configuration of a far side airbag device in Patent Document 1 and Patent Document 2 below and applied for a patent.

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

In order to perform the function as described above, the far side airbag must be able to stably support the occupant when it collides with the occupant and to absorb the impact.

However, since the far side airbag according to the prior art cannot be supported by any structure that prevents the airbag from being rotated or moved due to the characteristics of the installation position, it is difficult to sufficiently support the collided occupant when the occupant collides.

In addition, when a side collision of the vehicle occurs, there is a problem in that the occupant slips out of the deployed far side airbag while moving along the side direction of the vehicle.

For this reason, the far side airbag according to the prior art has a limit in safely protecting the occupants by preventing a collision with other occupants.

SUMMARY OF THE INVENTION An object of the present invention is to provide a far side airbag device for a vehicle that is inflated and deployed between occupants when a side collision of the vehicle occurs to prevent a collision between the occupants.

Another object of the present invention is to provide a far-side airbag device for a vehicle that can safely protect an occupant by preventing slippage of the occupant from escaping from the far-side airbag while moving in the lateral direction of the vehicle.

In order to achieve the above object, the far side airbag device for a vehicle according to the present invention is an airbag cushion that is built in a seat back and inflates and deploys to correspond to the side of the occupant's upper body during a side impact of the vehicle, and the side impact of the vehicle An inflator that generates gas by a shock sensing signal and supplies it to the airbag cushion and an inflator installed on the airbag cushion and hung on the passenger's shoulder to prevent slipping of a passenger moving in the lateral direction of the vehicle from slipping out of the airbag cushion It is characterized in that it includes a member.

As described above, according to the far-side airbag device for a vehicle according to the present invention, the effect of preventing the occupant from slipping out of the airbag cushion while moving along the side direction of the vehicle is obtained.

That is, according to the present invention, the movement preventing member is installed on the far side airbag cushion deployed between the occupants, and the shoulder of the occupant moving in the lateral direction of the vehicle can be caught by the movement preventing member when a side collision of the vehicle occurs.

Accordingly, according to the present invention, without a separate structure for supporting the far side airbag, the movement preventing member is hung on the shoulder of the occupant to prevent rotation of the airbag cushion, and the airbag cushion is disposed between the occupant and other occupants. The effect that the state can be maintained is obtained.

And, according to the present invention, by installing a plurality of movement preventing members on the airbag cushion and sequentially hooking them on the shoulder of the occupant, it is possible to prevent slip of the occupant and to strengthen the support force of the movement preventing member at the same time.

In addition, according to the present invention, the width of the portion corresponding to the shoulder of the occupant in the movement preventing member is partially expanded to form an extended portion, or by combining a friction pad with the movement preventing member, the shoulder of the occupant is easily attached to the movement preventing member. The effect that it can be caught is obtained.

As a result, according to the present invention, when a side collision of the vehicle occurs, it is possible to safely protect the occupant from the collision between the occupants by preventing the occupant from slipping out of the airbag cushion in the lateral direction of the automobile.

1 is a front view showing a state in which an airbag cushion of a far side airbag device for a vehicle is deployed according to a preferred embodiment of the present invention;
2 is a side view of the airbag cushion and the movement preventing member shown in FIG. 1;
3 to 4 are operation state diagrams each showing an operation state of a far side airbag device of a vehicle according to a preferred embodiment of the present invention;
5 is a side view of an airbag cushion and a movement preventing member of a far side airbag device for a vehicle according to another embodiment of the present invention;
6 and 7 are side views of an airbag cushion and a movement preventing member of a far side airbag device for a vehicle according to another embodiment of the present invention.

Hereinafter, a far 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 configuration of the far side airbag device installed in the driver's seat of a general vehicle will be described. The direction toward the front of the vehicle centered on the driver's seat is referred to as 'front (F)', and the direction toward the rear of the vehicle is referred to as 'rear (B)'. ' is said. In addition, terms indicating directions such as 'left (L)', 'right (R)', 'up (U)' and 'down (D)' indicate each direction based on the front and rear defined as doing

Accordingly, the front and rear (F, B) directions of the vehicle may be expressed in a horizontal direction, and the up and down (U, D) directions of the vehicle may be expressed in a vertical direction.

FIG. 1 is a front view showing a deployed state of an airbag cushion of a far side airbag device for a vehicle according to a preferred embodiment of the present invention, and FIG. 2 is a side view of the airbag cushion and the movement preventing member shown in FIG. 1 .

As shown in FIGS. 1 and 2 , the far side airbag device 10 for a vehicle according to a preferred embodiment of the present invention is built into the backrest 12 of the seat 11, and the upper body of the occupant during a side collision of the vehicle. The airbag cushion 20 that is inflated and deployed to correspond to the side surface, the inflator 30 and the airbag cushion 20 that generate gas by an impact detection signal during a side collision of a vehicle and supply it to the airbag cushion 20 and are installed on the passenger's side and a movement preventing member 40 that prevents movement of the airbag cushion 20 due to contact with an occupant who is hung on the shoulder and moves in the lateral direction of the vehicle.

The airbag cushion 20 is inflated and deployed forward, upward, and downward from the backrest 12 of the seat 11 to correspond to the pelvis and the entire upper body of the occupant, that is, to correspond to the sides of the occupant's abdomen, chest, neck and head. expansion unfolds. As described above, the airbag cushion 20 inflates and deploys between the occupant and other occupants, and functions to safely protect the occupant from collision with other occupants due to the impact of a side collision.

To this end, the airbag cushion 20 includes an outer panel in contact with the right side of the occupant and an inner panel in contact with the left side of another occupant, and by bonding the edges of the outer panel and the inner panel with a sewing method or the like to form a bag. can be formed.

The airbag cushion 20 is formed to inflate and deploy in a substantially circular shape, an oval shape, or a hexahedral shape, and may be inflated and deployed from the right side of the occupant toward the front, upward and downward directions.

In particular, the upper and lower portions of the airbag cushion 20 may be folded toward the occupant's head and abdomen or pelvis, respectively, centering on the central portion.

To this end, the airbag cushion 20 is divided into a plurality of chambers, and may be folded to each other around a central portion.

For example, the airbag cushion 20 includes an upper chamber 21 corresponding to the upper chest, neck, and head of the occupant centering on the occupant's chest, and a lower chamber 22 corresponding to the occupant's lower chest and abdomen. ) may be included.

The lower chamber 22 may extend downward to protect the pelvis along with the entire upper body of the occupant.

The upper chamber 21 and the lower chamber 22 may be folded into an approximately '<' shape in cross section by the chamber wall 23 forming a non-expandable region that does not expand.

As shown in FIG. 2, the chamber wall 23 includes a horizontal portion 24 that is horizontally disposed from the front end to the rear side of the airbag cushion 20 to form an approximately '┘' shape when viewed from the side, and a horizontal portion ( 24) may include a vertical portion 25 disposed vertically upward from the rear end. The horizontal portion 24 and the vertical portion 25 may be formed in various shapes, such as a straight line or a curved shape, a circular shape, an elliptical shape, and a polygonal shape, respectively.

Accordingly, the upper chamber 21 and the lower chamber 22 of the airbag cushion 20 may be folded to overlap each other based on the horizontal portion 24 of the chamber wall 23 .

For example, the upper chamber 21 and the lower chamber 22 may be folded while forming an angle of approximately 60° to 120°.

In addition, the upper chamber 21 of the airbag cushion 20 may be expanded and deployed concavely without being inflated by the vertical portion 25 of the chamber wall 23 . Here, the vertical portion 25 may be disposed at a position corresponding to the arm and shoulder of the passenger.

Therefore, when a side collision of the vehicle occurs, the shoulder of the occupant moves toward the concave center of the upper chamber 21 from the airbag cushion 20 in which the upper chamber 21 and the lower chamber 22 are inflated and deployed in a folded state. move in the direction In addition, the shoulder of the occupant is moved and inserted into the space S formed between the upper chamber 21 and the lower chamber 22 and the movement preventing member 23 so that it can be easily caught by the movement preventing member 40 .

The movement preventing member 40 has a tether function for limiting the deployment shape of the airbag cushion 20, and the airbag cushion 20 rotates and moves by contact with the occupant who is caught on the shoulder of the occupant and moves in the lateral direction of the vehicle. It performs the function of limiting the location to prevent it from happening.

In detail, the movement preventing member 40 may be formed in a substantially band shape having a preset length, width, and thickness.

Here, the length of the movement preventing member 40 may be provided to be shorter than the height of the airbag cushion 20 so that the upper chamber 21 and the lower chamber 22 of the airbag cushion 20 can be folded. .

That is, when the length of the movement preventing member 40 is shortened, the angle between the upper chamber 21 and the lower chamber 22 is reduced, and when the length of the movement preventing member 40 is increased, the upper chamber 21 and the lower chamber. The angle between (22) increases.

To this end, both ends of the movement preventing member 40 may be connected to the upper and lower ends of the airbag cushion 20 , respectively, to limit the deployment shape of the airbag cushion 40 .

That is, the upper end of the movement preventing member 40 is connected to the upper chamber 21 of the airbag cushion 20 , and the lower end of the movement preventing member 40 is connected to the lower chamber 22 of the airbag cushion 20 . can

The movement preventing member 40 may be connected to the upper end and the lower end of the airbag cushion 20 by a sewing method. Of course, the present invention is not necessarily limited thereto, and in addition to the sewing method, it may be connected to the airbag cushion 20 by various suitable methods such as adhesive, RF welding, and ultrasonic welding.

In particular, the upper end of the movement preventing member 40 is preferably connected to the front side of the central portion of the upper chamber 21 corresponding to the shoulder portion of the occupant so that the shoulder portion of the occupant can be easily caught.

On the other hand, the lower end of the movement preventing member 40 may be connected to the central portion of the lower chamber 22 or may be connected to the rear side of the central portion of the lower chamber 22 .

As described above, the present invention can prevent the airbag cushion from rotating or moving backward between the occupants by connecting the movement preventing member to the upper end of the airbag cushion and hanging it on the shoulder of the occupant.

Accordingly, according to the present invention, it is possible to safely protect from a collision between occupants by preventing a slip of an occupant moving along the side direction of the automobile from slipping out of the airbag cushion during a side collision of the automobile.

Meanwhile, in the present embodiment, it has been described that the airbag cushion 20 is installed on the right side of the backrest 12 of the seat 11 provided on the driver's seat, but the present invention is not necessarily limited thereto. It may be changed to be installed on the left side of the back 12 of the provided seat 11 .

And the lower end of the movement preventing member 40 may be connected to the lower end of the airbag cushion 20 or connected to the side of the seat 11 or the lower end of the backrest 12 .

In addition, according to the present invention, the movement preventing member 40 is provided not only in a band shape, but also in a panel member formed in a square shape, a circle shape, an oval shape, or the like, or a rope having a certain thickness, thereby causing damage or damage due to contact with an occupant. can also be prevented.

Next, a method of operating a far side airbag device for a vehicle according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 3 to 4 .

3 to 4 are operation state diagrams each showing an operation state of a far side airbag device for a vehicle according to a preferred embodiment of the present invention.

When a side collision of the vehicle occurs, the inflator 30 generates gas by igniting the ignition according to the detection signal of the impact sensor (not shown) installed in the vehicle, and the gas generated in the inflator 30 is It is supplied into the airbag cushion 20 .

When gas is supplied from the inflator 30 , the airbag cushion 20 is drawn out of the backrest 12 of the seat 11 and is inflated and deployed from the side of the occupant toward the front, upwards and downwards.

At this time, the deployment shape of the upper chamber 21 and the lower chamber 22 of the airbag cushion 20 is limited by the movement preventing member 40 as shown in FIG. 3 .

That is, the upper chamber 21 and the lower chamber 22 are folded to overlap each other in an approximately '<' shape around the horizontal portion 24 of the chamber wall 23 formed in the central portion.

In particular, the airbag cushion 20 may be inflated and deployed to be folded into an approximately ''' shape so that the shoulder of the occupant can be easily caught at the initial stage of deployment.

Therefore, a space (S) is formed between the upper chamber (21), the lower chamber (22) and the movement preventing member (40), the shoulder of the occupant hangs.

Therefore, when a side collision of the vehicle occurs, the upper body of the occupant moves to the right along the lateral direction of the vehicle as shown in FIG. It moves to the space (S) between them.

At this time, the movement preventing member 40 is caught on the shoulder region including the arm of the occupant, and the airbag cushion 20 is fixed so that rotation and movement in the front-rear direction, the up-down direction, the left-right direction is impossible regardless of the movement direction of the occupant. keep the status quo

Through the process as described above, the present invention installs the movement preventing member on the airbag cushion, and the shoulder of the occupant moving along the side direction of the vehicle is caught by the movement preventing member.

Accordingly, the present invention prevents rotation of the airbag cushion by hooking the movement preventing member to the shoulder of an occupant without a separate structure for supporting the far side airbag, and the airbag cushion is disposed between the occupant and other occupants. can keep

For this reason, according to the present invention, it is possible to prevent the occupant from slipping out of the airbag cushion while moving in the lateral direction of the vehicle, thereby preventing injuries due to a collision between occupants.

Meanwhile, in the above embodiment, it has been described that one movement preventing member is applied to the airbag cushion, but the present invention is not necessarily limited thereto.

5 is a side view of an airbag cushion and a movement preventing member of a far side airbag device for a vehicle according to another embodiment of the present invention.

In the far side airbag device for a vehicle according to another embodiment of the present invention, the movement preventing member 40 may be provided in plurality, for example, two, as shown in FIG. 5 .

That is, the first and second movement preventing members 41 and 42 may be installed on the airbag cushion 20 .

Here, the first movement preventing member 41 and the second movement preventing member 42 are positioned at different angles from each other so that they can be sequentially caught on the shoulder of an occupant moving in the lateral direction of the vehicle when a side collision of the vehicle occurs. can be placed as

For example, the upper end of the first movement preventing member 41 may be connected to the upper end in front of the central portion of the upper chamber 21 corresponding to the shoulder of the occupant, like the movement preventing member described in the above embodiment. And the lower end of the first movement preventing member 21 may be connected to the central portion or the rear side of the lower chamber (22).

The upper end of the second movement preventing member 42 is connected to the front side than the upper end of the first movement preventing member 41 , and the lower end of the second movement preventing member 42 is the same as the lower end of the first movement preventing member 41 . It can be connected to the location or the front or rear.

Here, the lower end of the second movement preventing member 42 may be connected to the lower end of the lower chamber 22 , or the lower portion of the seat 11 or the backrest 12 .

In this way, the angle of the second movement preventing member 42 is adjusted according to the position where the upper end and the lower end are connected to the airbag cushion 20 , and may be disposed at an angle different from that of the first movement preventing member 41 .

Therefore, after the shoulder portion of the occupant is primarily caught by the first movement preventing member 41, the second movement preventing member 42 is separated from the first movement preventing member due to vibration or impact. It is possible to prevent slipping from the airbag cushion 20 while the occupant moves to the side of the vehicle by being caught on the shoulder part of the vehicle.

Of course, the second movement preventing member 42 may more effectively prevent the occupant from slipping out of the airbag cushion 20 by being secondarily hooked on the shoulder portion of the occupant caught by the first movement preventing member 41 .

In the present invention, three or more movement preventing members are installed in the airbag cushion 20 so that they are sequentially hung on the shoulder of the occupant, thereby preventing the occupant from slipping and at the same time strengthening the support force of the movement preventing member.

6 and 7 are side views of an airbag cushion and a movement preventing member of a far side airbag device for a vehicle according to another embodiment of the present invention.

As shown in FIG. 6 , the movement preventing member 40 may include an extension 43 having a wider width than other parts so that the shoulder portion of the occupant can be easily caught.

The extension portion 43 may be formed by extending a portion of the movement preventing member 40 corresponding to the shoulder portion of the passenger to be wider than the width of other portions, for example, upper and lower portions.

The extension 43 may be formed in various shapes such as a polygonal shape such as a square shape or a hexagonal shape, or a circular shape or an elliptical shape.

In addition, the extension 43 may be formed by expanding only the left portion of the movement preventing member 40 in contact with the shoulder of the occupant, that is, as seen in FIG. 6 .

In addition, as shown in FIG. 7 , a friction pad 44 applied to the shoulder of the occupant may be coupled to the movement preventing member 40 using frictional force when in contact with the shoulder of the occupant.

The friction pad 44 may be made of a pad member such as a cloth material, a synthetic resin material such as rubber or vinyl, or the like, which has a greater friction coefficient than a general tether member.

The friction pad 44 is formed in various shapes, such as a polygonal shape such as a square shape or a hexagonal shape, a circular shape, an oval shape, and the movement preventing member 40 by various suitable methods such as sewing method, adhesive, RF welding, ultrasonic welding, etc. can be coupled to

As described above, according to the present invention, it is possible to install a movement preventing member on the airbag cushion and partially expand the width of the portion corresponding to the shoulder of the occupant in the movement preventing member to form an extended portion, or to couple a friction pad to the movement preventing member. there is.

Accordingly, the present invention can effectively prevent the occupant from slipping out of the airbag cushion by making the occupant's shoulder easily catch on the movement preventing member while the occupant moves in the lateral direction of the vehicle.

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

The present invention applies a movement preventing member to an airbag cushion deployed between occupants so that it hangs on the shoulder of the occupant, thereby preventing the occupant from slipping out of the airbag cushion in the event of a side collision of the vehicle, thereby preventing a collision between occupants. It is applied to the car's far side airbag device technology to safely protect it from

10: car airbag device
11: seat 12: backrest
20: airbag cushion
21: upper chamber 22: lower chamber
23: chamber wall 24: horizontal part
25: vertical part
30: Inflator
40: movement preventing member 41, 42: first, second movement preventing member
S: space

Claims (10)

An airbag cushion that is embedded in the seat back and inflates and deploys to correspond to the side of the occupant's upper body in the event of a side collision of a vehicle;
an inflator that generates gas by an impact detection signal during a side collision of a vehicle and supplies it to the airbag cushion;
Both ends are connected to the upper and lower ends of the airbag cushion, respectively, to limit the deployment shape when the airbag cushion is inflated and deployed, and to prevent the occupant from slipping out of the airbag cushion while being caught on the shoulder of the occupant and moving in the lateral direction of the vehicle Includes a movement preventing member,
A space is formed between the airbag cushion and the movement preventing member, in which the shoulder portion of the occupant hangs when the airbag cushion is deployed;
The airbag cushion includes an upper chamber corresponding to the upper chest, neck, and head of the occupant centering on the occupant's chest;
Including a lower chamber corresponding to the lower chest, abdomen, and pelvis of the occupant,
The upper end of the movement preventing member is connected to the front side of the airbag cushion corresponding to the shoulder of the passenger,
The movement preventing member is provided in plurality so that the shoulder portion of the occupant moving in the lateral direction of the vehicle is sequentially caught,
The plurality of movement preventing members are sequentially hooked on the shoulder of the occupant to prevent the occupant from slipping and are connected to the airbag cushion at different angles to strengthen the support force of the movement preventing member,
The upper chamber and the lower chamber are caught on the shoulder of the occupant moving along the side of the vehicle to prevent rotation and movement while preventing the occupant from slipping out of the airbag cushion to protect the occupant. side airbag device. delete According to claim 1,
The airbag cushion is provided with a chamber wall forming a non-inflated region,
The chamber wall includes a horizontal portion disposed from the front end to the rear side of the airbag cushion;
It is formed in a '┘' shape including a vertical part disposed upward from the rear end of the horizontal part,
The far side airbag device for a vehicle, characterized in that the upper chamber and the lower chamber are folded to overlap each other around a horizontal portion of the chamber wall. delete delete According to claim 1,
The lower end of the movement preventing member is a far side airbag device for a vehicle, characterized in that it is connected to a seat or back in which the airbag cushion is built. delete delete According to claim 1,
The far side airbag device for a vehicle, wherein the movement preventing member includes an extension portion that is wider than other portions at a position corresponding to the shoulder portion of the occupant. According to claim 1,
A far side airbag device for a vehicle, characterized in that the friction pad having a friction coefficient greater than the friction coefficient of the movement preventing member is coupled to the movement preventing member so that the shoulder portion of the occupant is caught by frictional force.

Images