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Gas generator of thin-walled structure

  • US 5,387,007 A
  • Filed: 03/29/1993
  • Issued: 02/07/1995
  • Est. Priority Date: 06/21/1991
  • Status: Expired due to Fees
First Claim
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1. A gas generator of a thin-walled structure, having a central cylindrical holder in which a squib or enhancer is housed, a combustion chamber surrounding said holder and holding gas generants therein, a filter and coolant chamber formed annularly so as to surround said combustion chamber, and adapted to allow the entry thereinto of a gas which has passed through openings thereof communicating with said combustion chamber, and gas outlet ports formed at said filter and coolant chamber and through which the gas which has passed through a filter and a coolant rushes into an air bag, characterized in that said combustion chamber (10) is formed with a combustor cup (14) having an annular top wall fixed at an inner edge portion thereof to a circumferential edge of a top wall of said central cylindrical holder (4) by riveting, a combustor plate (16) being welded at an outer edge thereof to an inner edge portion of a flange at an outer circumference of said combustor cup, and at an inner edge thereof to an opposite edge portion of said holder, so as to close said combustion chamber, a diffuser (12) being provided so as to cover said top wall of said central cylindrical holder and a top wall which continues therefrom of said combustor cup, whereby a double wall for said combustion chamber is formed, an extended portion of said diffuser and said flange at the outer circumference of said combustor cup forming said filter and coolant chamber, a free end portion of said flange at the outer circumference of said combustor cup being welded to the inner wall of said extended portion of said diffuser, said outlet ports for a gas flow from said filter and coolant chamber being provided in said extended portion of said diffuser.

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