Air bag system
First Claim
1. An air bag system comprising:
- an air bag having a center portion, a peripheral portion and an opening through which gas is supplied;
a container for containing the air bag folded in a predetermined polygonal shape to position the opening at a bottom side of the air bag, the center portion being positioned in a central region of the polygonal shape and a part of the peripheral portion of the air bag being positioned at a corner of the polygonal shape;
an expansion restraining member disposed around the folded air bag, the expansion restraining member comprising a main portion passing through the center of the polygonal shape, forked portions formed at the corner of the polygonal shape so that the part of the peripheral portion may be inserted between and be held by the forked portions, and a first slit portion formed on the main portion dividing the main portion into two, wherein when the folded air bag is deployed, an expansion of the peripheral portion at the corner is delayed compared to an expansion of the center portion due to the expansion restraining member being fractured at the first slit portion to make the center portion free but temporarily holding the peripheral portion.
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Accused Products
Abstract
An air bag system comprises an air bag having an opening through which gas is supplied. The air bag is folded in a predetermined polygonal shape and is then contained in a pad. An expansion restraining member is provided in the air bag system. The expansion restraining member temporarily holds a peripheral portion of the folded air bag so as to suppress rapid expansion thereof when the air bag is developed. Because the expansion of the peripheral portion is delayed by the expansion restraining member, it is possible to prevent the air bag from developing in the straight thin form toward a passenger. That is, the air bag can be developed in a round shape from its center portion when the gas is supplied into the air bag.
80 Citations
8 Claims
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1. An air bag system comprising:
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an air bag having a center portion, a peripheral portion and an opening through which gas is supplied;
a container for containing the air bag folded in a predetermined polygonal shape to position the opening at a bottom side of the air bag, the center portion being positioned in a central region of the polygonal shape and a part of the peripheral portion of the air bag being positioned at a corner of the polygonal shape;
an expansion restraining member disposed around the folded air bag, the expansion restraining member comprising a main portion passing through the center of the polygonal shape, forked portions formed at the corner of the polygonal shape so that the part of the peripheral portion may be inserted between and be held by the forked portions, and a first slit portion formed on the main portion dividing the main portion into two, wherein when the folded air bag is deployed, an expansion of the peripheral portion at the corner is delayed compared to an expansion of the center portion due to the expansion restraining member being fractured at the first slit portion to make the center portion free but temporarily holding the peripheral portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification