Air bag cover
First Claim
1. An air bag cover which is used for an air bag apparatus having a bag adapted to be inflated in front of a seat occupant at a sudden deceleration of the vehicle speed and which covers said bag in a folded state, said air bag cover comprising:
- a cover body having a predetermined thickness for covering said bag in the folded state;
a first thin-walled portion which is provided in a portion of said cover body and is adapted to break at the time of the expansion of said bag so as to permit said bag to expand toward the seat occupant;
a second thin-walled portion which is formed continuously with said first thin-walled portion and whose longitudinal direction differs from that of said first thin-walled portion; and
a third thin-walled portion provided in a portion connecting together said first and second thin-walled portions and having a smaller thickness than those of said first and second thin-walled portions.
1 Assignment
0 Petitions
Accused Products
Abstract
An air bag cover for covering an air bag in a folded state, the air bag being adapted to expand in front of a seat occupant at a sudden deceleration of the vehicle speed. The air bag cover includes a first thin-wall portion which is first broken by the expanding pressure at the time of the inflation of the air bag and a second thin-wall portion which is broken after the breakage of the first thin-walled portion has advanced. The first thin-walled portion and the second thin-walled portion are connected to each other in such a manner as to be substantially perpendicular to each other. A connecting portion between the two thin-walled portions has an even smaller thickness than the thicknesses of the two thin-walled portions, thereby permitting the breakage of the first thin-walled portion to advance smoothly to the second thin-walled portion.
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Citations
20 Claims
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1. An air bag cover which is used for an air bag apparatus having a bag adapted to be inflated in front of a seat occupant at a sudden deceleration of the vehicle speed and which covers said bag in a folded state, said air bag cover comprising:
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a cover body having a predetermined thickness for covering said bag in the folded state; a first thin-walled portion which is provided in a portion of said cover body and is adapted to break at the time of the expansion of said bag so as to permit said bag to expand toward the seat occupant; a second thin-walled portion which is formed continuously with said first thin-walled portion and whose longitudinal direction differs from that of said first thin-walled portion; and a third thin-walled portion provided in a portion connecting together said first and second thin-walled portions and having a smaller thickness than those of said first and second thin-walled portions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An air bag cover which covers a bag in a folded state and a part of which is adapted to break at the time of the expansion of said bag so as to permit the expansion of said bag, said air bag cover comprising:
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an elongated first thin-walled portion which is adapted to break by the pressure of said bag at the time of the expansion of said bag so as to form an outlet port for said bag; an elongated second thin-walled portion which is connected to an end of said first thin-walled portion substantially perpendicularly thereto and is adapted to further expand said outlet port for said bag; and a third thin-walled portion which is provided at a connecting portion between said first thin-walled portion and said second thin-walled portion and is provided with an even smaller thickness than those of said first and second thin-walled portions. - View Dependent Claims (14, 15, 16, 17)
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18. An air bag cover which covers a folded bag accommodated in a base member mounted on a chassis of a vehicle and which is secured to a base plate, said air bag cover comprising:
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a cover body a peripheral portion of which is secured to said base member; a first thin-walled portion which is formed by providing a pair of grooves, respectively, in both obverse and reverse surfaces of said cover body, said first thin-walled portion being adapted to break at the time of the expansion of said bag so as to permit the expansion of said bag and protrusion thereof from said cover body; an arc shaped second thin-walled portion formed in a central portion of said cover body and connected at an end portion thereof to said first thin-walled portion substantially perpendicular to the same, thereby allowing the breakage of said first thin-walled portion to advance to said second thin-walled portion so as to further expand a portion to be broken; and a third thin-walled portion provided at a connecting portion between said first thin walled portion and said second thin-walled portion and having an even smaller thickness than the thicknesses of said first and second thin-walled portions. - View Dependent Claims (19, 20)
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Specification