KR20080112001A

KR20080112001A - Passenger air bag system of vehicle

Info

Publication number: KR20080112001A
Application number: KR1020070060667A
Authority: KR
Inventors: 이재현
Original assignee: 현대모비스 주식회사
Priority date: 2007-06-20
Filing date: 2007-06-20
Publication date: 2008-12-24

Abstract

A passenger seat airbag device of a vehicle according to the present invention includes an airbag housing coupled to an instrument panel, an inflator installed in the airbag housing to eject gas in the event of a crash, and the airbag and airbag deployed toward the passenger seat when gas is introduced into the airbag housing. It is formed, and includes a vent hole to eject the gas in order to prevent the air bag from collapsing due to the reaction of the gas injection during deployment of the air bag, the vent hole is formed on both sides of the main vent hole and the side panel in the lower portion of the main panel of the air bag It includes a side vent hole formed in. According to the present invention, the passenger seat airbag device of the vehicle not only has a side panel, but also forms a vent hole in the lower part of the main panel, thereby increasing the amount of gas blown out when the airbag is deployed, thereby preventing LRD injuries of children and the like. In the late stage of deployment, the main vent hole formed in the lower part of the main panel is blocked, thereby maintaining the shock absorbing function of the airbag due to the dynamic collision.

Description

Passenger air bag system of vehicle {Passenger air bag system of vehicle}

1 is a perspective view showing a configuration for a passenger seat airbag device of a vehicle according to an embodiment of the present invention;

2 is a view referred to for explaining the airbag structure according to an embodiment of the present invention, and

3 and 4 are exemplary views for reference to the operation description of the passenger seat airbag device of a vehicle according to an embodiment of the present invention.

10: airbag 12a: main panel

12b: side panel 14a: main vent hole

14b: side vent hole 20: instrument panel

30: airbag housing 40: inflator

50: vent hole cover 55: adhesive portion

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a passenger seat airbag device of a vehicle, and more particularly, to a passenger seat airbag device of a vehicle for satisfying a low risk deployment (LRD) injury while maintaining dynamic collision performance during airbag deployment.

In general, a vehicle airbag is classified into a driver air bag mounted on a handle and protecting a driver of a driver's seat, and a passenger air bag installed on an instrument panel in front of a passenger seat to protect a passenger in a passenger seat. The driver's airbag is a mandatory feature and the passenger seat airbag is an option. However, in order to protect passengers, vehicles that use a passenger seat airbag as an essential specification are increasing.

However, the passenger seat airbag device of the prior art protects the occupant from shock as it is inflated as soon as possible in the event of a vehicle crash, but this protects the occupant in an abnormal position such as an infant, a child, a short passenger, an elderly person, or the like. Serious injury will occur.

Therefore, the LRD test should reduce the pressure inside the airbag to the extent that satisfactory injuries of infants and children are satisfied, but this has not been proven to be reliable enough to protect passengers in the normal position in the event of a serious crash.

Accordingly, an object of the present invention is to provide a passenger seat airbag apparatus for a vehicle that satisfies LRD injury while maintaining dynamic collision performance during airbag deployment.

The passenger seat airbag device of a vehicle according to the present invention for solving the above problems is installed in the airbag housing coupled to the instrument panel, an inflator installed in the airbag housing to eject gas in the event of a crash, the gas is stored in the airbag housing An airbag deployed toward the passenger seat and the airbag, the ventbag including a vent hole for ejecting gas to prevent the airbag from being pulled back due to the reaction of the gas spray when the airbag is deployed; and the vent hole includes a main hole of the airbag. It includes a main vent hole formed in the lower portion of the panel and side vent holes formed on both sides of the side panel.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view showing the configuration of a passenger seat airbag device of a vehicle according to an embodiment of the present invention. As shown in FIG. 1, the passenger seat airbag device of the vehicle according to the present invention is installed in the instrument panel 20, the airbag housing 30 coupled to the inside of the instrument panel 20, and the airbag housing 30. It is fixed to the inflator 40 and the airbag housing 30 to eject the high-pressure gas is stored in a folded state, the airbag 10, the airbag 10 is deployed toward the passenger seat when the gas flows in from the inflator 40 And vent holes 14a and 14b which allow the gas to be ejected to prevent the airbag 10 from being pulled out due to the reaction of the gas injection when the airbag 10 is deployed.

Here, the airbag 10 includes a main panel 12a formed to surround the upper and lower portions of the airbag 10, and side panels 12b formed to surround both sides of the main panel 12a. In addition, the vent holes 14a and 14b include a main vent hole 14a formed under the main panel 12a of the airbag 10 and side vent holes 14b formed on both sides of the side panel 12b. do.

At this time, the internal gas of the airbag 10 is ejected through the main vent hole 14a and the side vent hole 14b from the beginning to the middle of the deployment of the airbag 10, but in the second half of the deployment of the airbag 10, As the lower end of the main panel 12a and the instrument panel 20 come into contact with each other, the main vent hole 14a is blocked, and the gas inside the cushion of the airbag 10 is ejected only through the side vent hole 14b.

2 is a view referred to for explaining the airbag structure according to an embodiment of the present invention. Referring to FIG. 2, a vent hole cover 50 formed around the main vent hole 14a is provided at the periphery of the mail vent hole.

Here, the vent hole cover 50 prevents the gas from being blown out through the main vent hole 14a when the airbag 10 cushion is in contact with the instrument panel 20 of the vehicle. At this time, it is assumed that both sides of the vent hole cover 50 are provided with an adhesive part 55 to facilitate adhesion to the airbag 10 cushion.

FIG. 3 is an exemplary operation diagram referred to for describing an operation of a passenger seat airbag device of a vehicle according to an embodiment of the present invention, and in particular, an embodiment of an operation for satisfying a low risk deployment (LDR) injury.

First, referring to Figure 3 (a), it is a view showing the state when a child about six years old seated in the passenger seat. At this time, when a collision accident occurs, the high-pressure gas is ejected from the inflator 40 to fill the airbag 10, the airbag 10 is deployed toward the passenger seat as the high-pressure gas is filled to protect the passenger seat passenger from impact do.

3B is a view illustrating an initial stage of deployment of the airbag cushion, in which gas is ejected through a main vent hole 14a formed in the main panel of the airbag 10 cushion and a site vent hole in which a side panel is formed. As the pressure inside the cushion of the airbag 10 is reduced, a neck injury of a child may be reduced.

In addition, Figure 3 (c) is a view showing the mid-airbag deployment stage, also in this case, as shown in Figure 3 (b), the main vent hole 14a and the side panel formed in the main panel of the airbag 10 cushion As the gas is ejected through the formed site vent hole, as the pressure inside the cushion of the airbag 10 is reduced, the neck injury of the child may be reduced.

FIG. 4 is a view referred to for describing an operation of a passenger seat airbag device of a vehicle according to an embodiment of the present invention. In particular, an embodiment of an operation for maintaining dynamic collision performance is illustrated.

First, Figure 4 (a) is a view showing the initial stage of the airbag deployment when a collision accident, (b) is a view showing the mid-airbag deployment stage, (c) is a view showing the late stage of airbag deployment to be. At this time, (a) and (b) of Figure 4, like the (b) and (c) of Figure 3, the main vent hole 14a and the side formed in the main panel of the airbag 10 cushion when the airbag 10 is deployed The gas is blown out through the panel vented site vent hole.

only. In the latter stage of deployment of the airbag 10 as shown in FIG. 4C, the main vent hole 14a is blocked as the main panel is in contact with the instrument panel 20, so that the side vent hole 14b of the side panel 12b is blocked. Ensure that gas is emitted only through Therefore, in the late stage of deployment of the airbag 10, the pressure inside the airbag 10 is maintained to a certain degree, so that the safety is increased by absorbing the shock during the dynamic collision.

As described above, the passenger seat airbag device of the vehicle according to the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed herein, and may be applied within the scope of the technical idea. have.

As described above, according to the present invention, the passenger seat airbag device of the vehicle has an effect of preventing the LRD injury of a child by increasing the amount of gas blown when the airbag is deployed by forming a vent hole not only in the side panel but also in the lower part of the main panel. In addition, in the late stage of airbag deployment, the main vent hole formed in the lower portion of the main panel is blocked, thereby maintaining the shock absorbing function of the airbag due to the dynamic collision.

Claims

An airbag housing coupled to the instrument panel; An inflator installed in the airbag housing to eject gas when a crash occurs; An airbag stored in the airbag housing and deployed toward the passenger seat when gas is introduced; And a vent hole formed in the air bag to allow gas to be ejected to prevent the air bag from being pulled out due to the reaction of the gas injection when the air bag is deployed.

The vent hole may include a main vent hole formed at a lower portion of the main panel of the airbag and side vent holes formed at both sides of the side panel.

The method of claim 1,

And a vent hole cover formed to surround the main vent hole and blocking the gas from being blown out through the main vent hole when the air bag comes in contact with the instrument panel. .

The method of claim 2,

A passenger seat airbag device, characterized in that provided on both sides of the vent hole cover to be bonded to the airbag.