JP3245934B2 - Airbag device for passenger seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a passenger airbag device for protecting an occupant in a passenger seat of an automobile by deploying an airbag at the time of a vehicle collision. More specifically, the present invention relates to an airbag device for a passenger's seat that allows the airbag to have a desired deployed shape and then finally deployed to the original design shape of the airbag.

[0002]

2. Description of the Related Art A passenger airbag apparatus is an apparatus for protecting an occupant in a passenger seat by deploying an airbag at the time of a collision of a vehicle, and includes a folded airbag and a retainer or a retainer for protecting the airbag. A container, a lid for covering the airbag, an inflator (gas generator) for deploying the airbag, and the like are provided. This passenger airbag device is mounted on an instrument panel of a vehicle.

[0003] A conventional passenger airbag device and its operation will be described with reference to FIG. The airbag 10
Before the operation of the airbag device, the airbag device is properly folded and accommodated in the container 12, and a front opening of the container 12 is covered with a lid 14. When a car crashes,
The inflator 16 operates and the airbag 10 starts to deploy. The lid 14 is pushed by the airbag 10 and opens like a door as shown, and the airbag 10 is largely deployed in the vehicle compartment. Reference numeral 18 denotes an opening for guiding gas from the inflator 16 into the container 12.

[0004]

In the above-described conventional passenger airbag device, the gas discharged from the inflator 16 tends to go straight ahead of the container 12. For this reason, in the process of deploying the airbag 10, the airbag 10 once protrudes forward and assumes a protruding shape, and then expands (inflates) to the original design shape of the airbag 10.

The present invention provides an airbag device for a passenger seat, in which the airbag is quickly deployed in a desired shape in the up-down or left-right direction in the passenger compartment of the passenger seat, and then deployed to the original design shape of the bag. It is intended to provide.

[0006]

According to a first aspect of the present invention, there is provided an airbag apparatus for a passenger seat, comprising: a folded airbag; a container for accommodating the airbag; inflator and, of the container of
A front opening, and a lid which is pushed by the airbag when the airbag is deployed and is opened to the vehicle interior side; It is provided gas flow guide inner belt for guiding the gas from the inflator in a direction intersecting to the container front, the inner belt
Is installed between one end and the other end of the front opening of the container.
Handed over and the length from the one end to the other end
It is characterized by having a large length .

In a second aspect of the present invention, there is provided an airbag device for a passenger seat according to the first aspect , wherein the inner belt is provided with an opening for gas passage.

[0008]

According to the air bag device for a passenger's seat of the working Such present invention, the change flow direction vertical or horizontal direction by the gas Guy N'naberuto from the inflator, quickly expand to the desired shape of the air bag is once vertical or horizontal direction After that, the bag is developed into the original design shape.

[0009]

Embodiments will be described below with reference to the drawings .

[0010] Figure 2 is a perspective view of the airbag device operating state indicating a passenger airbag device according to the actual施例of the present invention. In this embodiment, Lee N'naberuto 40 is provided as a guide member for changing the gas flow direction.
The inner belt 40 is stretched between one end (left end) 12a and the other end (right end) 12b of the front opening of the container 12, and has a length larger than the length from the one end 12a to the other end 12b. Have. The inner belt 40 has openings 42 and 44 through which gas from the inflator 16 is blown out in the left-right direction when viewed from the passenger seat occupant.
Are provided in plurality.

The other components in FIG. 2 are the same as those in FIG. 1, and the same parts are denoted by the same reference numerals.

In the passenger-seat airbag apparatus shown in FIG. 2, the flow of the gas ejected from the inflator 16 is changed in the vertical direction by hitting the inner belt 40.
The airbag 10 can be deployed quickly in the up-down direction once, and the protrusion of the airbag 10 can be prevented. In the present embodiment, since the openings 42 and 44 are provided, the airbag 10 is once deployed in the left-right direction when viewed from the vehicle occupant. Alternatively, as shown in FIG. 3, there is also a method in which the inner belt is attached between one end (upper end) 12c and the other end (lower end) 12d of the front opening of the container 12 to flow gas in the left-right direction.

[0013]

As described above, according to the present invention, a passenger airbag apparatus of the present invention has provided Lee N'naberuto for guiding the gas from the inflator in a vertical or horizontal direction as viewed from the vehicle occupant, the air bag Does not protrude toward the vehicle occupant, but once expands vertically or horizontally as viewed from the vehicle occupant, and finally develops into the original design shape of the airbag. Therefore, there is little possibility that the airbag comes into contact with the vehicle occupant during the airbag deployment process.

[Brief description of the drawings]

FIG. 1 is a sectional perspective view of a conventional airbag device.

FIG. 2 is a perspective view of an airbag device showing an embodiment of the present invention.

FIG. 3 is a perspective view of an airbag device showing a different embodiment of the present invention.

[Explanation of symbols]

 10 airbag 12 container 14 lid 16 inflationTa 4 0 Inner belt 42,44 opening

Claims (2)

(57) [Claims] 1. A folded airbag, and said airbag
Container for accommodating air, and air provided in the container.
Inflator for bag deployment and said containerFront opening
When the airbag is deployed.
A lid which is pushed by the airbag and is opened to the vehicle interior side.
Of the gas flow to guide the antenna
Guide inner belt providedBecome The inner belt is connected to one end of the front opening of the container.
From the other end, and from the one end to the other end
Has a length greater than Characterized by
Airbag device for passenger seats. 2. The passenger airbag device according to claim 1 , wherein the inner belt is provided with an opening for gas passage.