1. Field of the Invention
The present invention relates to an air bag apparatus, and more particularly, to an air bag apparatus for side crash.
2. Description of the Related Art
An air bag apparatus is provided for a car to protect the body of a rider like a driver or a passenger. As the air bag apparatuses for the car, an air bag apparatus for head-on collision and an air bag apparatus for side crash are known. The air bag apparatus for side crash is provided between a center pillar or a door and the rider to protect the body of the rider, especially, the chest of the rider.
As shown in FIGS. 1 and 2, the air bag apparatus for side crash is composed of an air bag 102 whoseproximal end is stuck to a side section 101 of a seat and which expands due to gas inflation by an inflater 103 in case of side crash at a moment. As shown in FIG. 2, the air bag is folded and embedded in the side section 101 of the seat before the expansion. However, if the side direction acceleration sensor operates, the inflater 103 operates to supply a high-pressure gas into the air bag 102 at a moment. As a result, the air bag 102 expands in the direction shown by an arrow a, between the chest of the rider and the sidepiece 104 of the car to protect the body of the rider.
In such an air bag apparatus for side crash, the air bag expands rapidly