Inflating type occupant restraint device
First Claim
1. An inflating type occupant restraint device for a motor vehicle comprising a case for a gas bag folded up and encased so as to inflate only when a gas generator operates, said case being an integral structure which includes side walls secured to a fixed part of the vehicle and a lid surface portion thinner than said side walls, said lid portion being made of a ductile and comparatively hard material having a series of frangible weakened lines extending radially from near the center of the surface of said lid portion and leading at least to four corners of said lid surface portion, a peripheral portion extending from, raised above, and surrounding said lid portion and connecting it and said side walls, said peripheral portion being thinner than said side walls, and a cover sheet secured to and covering said lid surface portion but not said peripheral portion so as to cover the entire area of said frangible lines, said cover sheet being made of a material which ruptures more easily than said frangible lines.
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Accused Products
Abstract
A receiving case for receiving a gas bag is formed of a side wall portion secured to a fixed member and a lid surface portion thinner than the side wall portion by the use of a material having a comparatively high hardness and a ductility. Further, the lid surface portion is formed with fragile portions contiguous to one another. At the inflation of the gas bag, the receiving case for the gas bag is prevented from scattering in the form of broken pieces, and the gas bag is prevented from being damaged by a sharp edge otherwise arising at the fracture surface of the receiving case.
106 Citations
1 Claim
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1. An inflating type occupant restraint device for a motor vehicle comprising a case for a gas bag folded up and encased so as to inflate only when a gas generator operates, said case being an integral structure which includes side walls secured to a fixed part of the vehicle and a lid surface portion thinner than said side walls, said lid portion being made of a ductile and comparatively hard material having a series of frangible weakened lines extending radially from near the center of the surface of said lid portion and leading at least to four corners of said lid surface portion, a peripheral portion extending from, raised above, and surrounding said lid portion and connecting it and said side walls, said peripheral portion being thinner than said side walls, and a cover sheet secured to and covering said lid surface portion but not said peripheral portion so as to cover the entire area of said frangible lines, said cover sheet being made of a material which ruptures more easily than said frangible lines.
Specification
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- Resources
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Current AssigneeToyoda Gosei Company Limited (Toyota Motor Corporation), Toyota Jidosha Kogyo Kabushiki Kaisha (Toyota Motor Corporation)
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Original AssigneeToyoda Gosei Company Limited (Toyota Motor Corporation), Toyota Jidosha Kogyo Kabushiki Kaisha (Toyota Motor Corporation)
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InventorsYamazaki, Yoshio, Shiratori, Harunori, Hori, Junichi, Yoshimi, Takaharu
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Primary Examiner(s)Silverstrim, John P.
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Application NumberUS05/729,848Time in Patent Office917 DaysField of Search280/731, 280/728, 280/729, 280/730, 280/732, 280/734, 280/735, 280/736, 280/737, 280/738, 280/739, 280/740, 280/741, 280/742US Class Current280/731CPC Class CodesB60R 21/2035 using modules containing in...B60R 21/21656 Steering wheel covers or si...
