KR20090118650A - Air bag cushion for vehicles - Google Patents

Abstract

PURPOSE: An air bag cushion for a vehicle is provided to improve the deployment performance of an air bag by installing third panel inside the cushion and dispersing the pressure in an initial airbag deploying step. CONSTITUTION: An air bag cushion for a vehicle comprises an inflator and an airbag cushion part(10). The inflator spouts high pressure gas in a vehicle crush. The air bag cushion is expanded by the inflator. The air bag cushion is made of a first panel(11), a second panel, and a third panel(13). The first panel has a gas inlet receiving gas from the inflator. The third panel is arranged between the first panel and the second panel. The third panel is welded with the first panel and a gas filled space part(50) is formed. The third panel has a plurality of inlets(40a).

Description

Air bag cushion for vehicles

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle airbag cushion, and more particularly, to a vehicle airbag cushion capable of minimizing damage to a driver of an out of position (OOP) by the force of the cushion.

In general, the driver's seat airbag device is a safety device that protects the driver and passengers from shock caused by the frontal collision or fall of the vehicle.It is installed in the vehicle as an option, but recently, the installation of the driver's airbag is mandatory. BACKGROUND OF THE INVENTION The use of passenger airbags for protecting passengers or airbag devices for protecting drivers and passengers from side collisions is increasing day by day.

 In addition, in the case of a conventional air bag as shown in Figure 1 and the cushion (1) consisting of one chamber; In the cushioning device composed of the inflator (2) for supplying gas to the cushion, the gas of the inflator is discharged to the cushion consisting of one chamber at a time during deployment, so that the flow of gas is difficult to control as designed by the designer, causing injury to the driver. The cushion development force that occurs is generated in the front center portion that is in contact with the driver at the beginning of the cushion deployment, when the driver is in an abnormal posture of the cushion development force is developed is unsuitable Injuries are caused by the shock of the cushion, and low pressure inflate or special dead or cushioning specifications have been developed.In this case, the cost increases due to the application of dual inflate and special ted. Cost increase due to specification and performance is severely deviated to improve Although he does not come out a satisfactory performance it is also a problem that is limited haneundedo applied to the airbag device.

The present invention has been made in order to solve the problems of the prior art as described above, the panel is bonded to the inside of the cushion to form a space filled with gas and guides the direction of gas flow, thereby preventing the punch out force shape The purpose is to provide a vehicle airbag cushion to minimize the.

An airbag cushion for a vehicle according to the present invention for solving the above problems includes an inflator for ejecting a high pressure gas during a crash of a vehicle, an airbag cushion for inflating by the inflator, and the airbag cushion for inflow of gas from the inflator A first panel having a gas inlet formed therein, and a second panel stitched against the first panel and disposed between the first panel and the second panel and joined to the first panel to form gas. A space portion to be filled is formed, and a third panel is provided with a plurality of inflow portions formed so that the high-pressure gas introduced into the space portion is evenly distributed and filled.

A plurality of inlet pipes are formed to control the flow of gas through a bar of a predetermined shape so that a plurality of inlets are formed between the first panel and the third panel.

The plurality of inlet pipe portion is characterized in that it is arranged radially from the space portion.

The inlet pipe unit is arranged to be symmetrically spaced apart from the gas inlet in a circumferential direction by a predetermined angle, and further comprises an upper inlet pipe unit for inducing gas in an upward direction.

The third panel has the same width as the left and right sides of the first panel, and the upper and lower widths are smaller than the width of the first panel.

        The vehicle airbag cushion according to the present invention configured as described above, by installing a third panel inside the cushion to induce the pressure to be distributed as the designer intends to the side and upward direction in the initial airbag electric field step to improve the airbag deployment performance And, there is an advantage that can be safely protected by minimizing the impact of the passengers.

In addition, it consists of only three panels, which greatly reduces the number of parts compared to the cushions with the existing LRD performance, and improves the OOP performance only by the cushion shape, simplifying the process, and eliminating the need for dual inflate or special ted. There is an advantage to this.

        Hereinafter, with reference to the accompanying drawings on the vehicle airbag cushion according to a preferred embodiment of the present invention will be described in detail. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention and to those skilled in the art to fully understand the scope of the invention. It is provided to inform you.

Figure 2 is a working state of the vehicle airbag cushion according to the present invention, Figure 3 is a state diagram showing the flow of gas mounted on the third panel of the vehicle airbag cushion according to the present invention, Figure 4 is a vehicle airbag cushion according to the present invention State diagram showing the gas flow in the device.

The vehicle airbag cushion 10 according to the present invention includes an inflator 2 for ejecting a high pressure gas in a crash event of the vehicle, an airbag cushion 10 inflated by the inflator 2, and the airbag cushion 10. Is composed of a first panel 11 having a gas inlet through which the gas flows from the inflator 2, and a second panel 12 which is sewn against the first panel 11 and sewn. 11) and a space portion 50 disposed between the second panel 12 and bonded to the first panel 11 and filled with gas to form a high pressure flowed into the space portion 50. And a third panel 13 in which a plurality of inlets 40a are formed to uniformly disperse and fill gas.

The first panel 11 of the cushion 10 is formed with an inlet 11a through which gas is introduced, and is disposed on the rear surface of the cushion 10.

As shown in (a) of FIG. 2, the first panel 11 disposed at the rear surface is formed in an “8” shape, and at least one vent hole 11b through which gas is ejected is formed.

In addition, the second panel 12 of the cushion 10 is formed in a circular shape, it is disposed on the surface that collides with the passenger, that is, the front.

The first panel 11 and the second panel 12 are pressed together at the edge to seal the outer edge portion by sewing means, and at least one panel between the first panel 11 and the second panel 12. The joined third panel 13 is installed.

As shown in FIG. 2B, the third panel 13 is attached to and fixed to the first panel 11 to block the injection port 11a of the first panel 11.

The third panel 13 is formed in an “8” shape installed to correspond to the shape of the first panel 11, and the inclined straight sections on the left and right sides are the width of the first panel 11. It is formed the same, the upper and lower curved section is formed smaller than the width of the first panel (11).

In addition, the third panel 13 has a three-panel vent hole 13b corresponding to the vent hole 11b formed in the first panel 11 so that gas is ejected.

As such, the third panel 13, which is in contact with the first panel 11, is formed with a space part 50 filled with gas, and faces toward the outer edge of the cushion 10 from the space part 50. An inlet 40a through which a plurality of gases are injected is formed.

The plurality of inlets 40a are formed with a plurality of inlet pipes 40 for controlling the flow of gas through a bar of a predetermined shape, the plurality of inlet pipes 40 are arranged radially from the space 50 do.

As shown in (c) of FIG. 2, the inlet pipe part 40 is spaced apart from the gas inlet 11a by a predetermined angle along the circumferential direction so that left and right sides are symmetrical, and an upper inlet for inducing gas in an upward direction. It is configured to further include a pipe portion (41).

The inlet pipe part 40 is fixedly installed by the sewing unit 60 to bond the first panel 11 and the third panel 13 to each other, and the sewing unit 60 has various types of inlets. 40a is formed to adjust the inlet pipe 40 is formed is a structure to improve the deployment performance by adjusting the direction of the gas flow as the designer intended.

Referring to the operating state of the vehicle airbag cushion of the present invention made of the above configuration as follows.

When the collision accident of the vehicle occurs, the inflator 2 is exploded, the high-pressure gas is ejected from the inflator 2 and supplied to the inside of the airbag cushion 10 through the gas inlet 11a of the airbag cushion 10. do.

As shown in FIG. 3, the high-pressure gas introduced through the gas inlet 11a is filled into the space 50 positioned in front of the gas inlet 11a, and is filled from the filled space 50. The plurality of inlet pipe portion 40 is dispersed to move.

Since the plurality of inflow pipe parts 40 are radially provided inside the airbag cushion 10, the high-pressure gas may be evenly distributed in all directions.

When the high-pressure gas is filled in each of the plurality of inlet pipes 40, the airbag cushion induces the gas in the left, right and upper directions, and in more detail, the gas flows into the upper left, right, lower left and right sides of the cushion 10. Induced by the inlet pipe portion 40 is ejected to the inlet portion 40a of each of the inlet pipe portion 40 and expands first to the left, right upwards to expand toward the front of the passenger to protect the passenger.

At this time, when the high-pressure gas is evenly distributed and filled in the plurality of inlet pipe 40, the high-pressure gas is prevented from being concentrated on the center side of the airbag cushion 10, in particular, unreasonable expansion for the passenger in the OOP state Since no pressure is applied, passengers are prevented from being injured.

The present invention has been described above with reference to the embodiments shown in the drawings. However, the present invention is not limited to this, and those skilled in the art to which the present invention pertains have various modifications that are equivalent to the present invention by those skilled in the art to which the present invention pertains. Or other embodiments are possible. Therefore, the true scope of protection of the present invention should be defined by the following claims.

Although applied to the shape of the vehicle airbag cushion according to the present invention can be designed and manufactured in a variety of patterns can provide an airbag with low performance and price.

1 is a block diagram of a vehicle airbag apparatus according to the prior art

Figure 2 is a working state of the vehicle airbag cushion according to the invention,

3 is a state diagram showing the flow of the gas mounted on the third panel of the vehicle airbag cushion according to the present invention,

Figure 4 is a state diagram showing the gas flow of the vehicle airbag cushion device according to the invention.

<Explanation of symbols on main parts of the drawings>

 2: inflator 10: first panel

 20: second panel 30: third panel

 40: inflow pipe part 50: space part

Claims (5)

An inflator for ejecting high pressure gas during a vehicle crash; An airbag cushion inflated by the inflator; The airbag cushion includes: a first panel having a gas inlet through which gas is introduced from the inflator, and a second panel which is sewn against the first panel; A space part disposed between the first panel and the second panel and bonded to the first panel to fill a gas, and a plurality of inflow parts to uniformly disperse and fill the high-pressure gas introduced into the space part. Vehicle airbag cushion comprising a third panel formed.        The method of claim 1, A vehicle airbag cushion having a plurality of inlet pipe portions for controlling the flow of gas through a rod of a predetermined shape such that a plurality of inlets are formed between the first panel and the third panel.        The method of claim 2, And the plurality of inflow pipe parts are disposed radially from the space part.        The method of claim 2, The inlet pipe unit is arranged to be symmetrically spaced apart from the gas inlet in the circumferential direction by a predetermined angle, and further comprises an upper inlet pipe unit for inducing gas in an upward direction.        The method of claim 1, The third panel may have the same width as the left and right sides of the first panel, and the upper and lower widths may be smaller than the width of the first panel.

Images