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Gas generator for restraining device of vehicle

  • US 8,434,783 B2
  • Filed: 01/14/2010
  • Issued: 05/07/2013
  • Est. Priority Date: 01/15/2009
  • Status: Active Grant
First Claim
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1. A gas generator for a restraining device of a vehicle comprising:

  • a housing forming an outer shell container of the gas generator, having a circumferential wall portion which is provided with a gas discharge port, a first end, and a second end opposite to the first end, the first end and the second end being both closed;

    a cup-shaped inner tube member disposed in the housing, an inside thereof being an ignition chamber accommodating an ignition device, an outside thereof being a combustion chamber charged with a gas generating agent, the cup-shaped inner tube member including,a bottom surface located in a bottom plate of the first end of the housing, andan opening end portion provided with a ventilating portion for allowing a combustion product of the ignition device to pass therethrough; and

    an igniter of the ignition device attached to an igniter attaching portion formed at the second end of the housing,a passage for the combustion product defined between an inner wall surface of the cup-shaped inner tube member and the igniter attaching portion, and reaching the ventilating portion, such that the combustion product is released to a side of the second end in the combustion chamber thereby combustion of the gas generating agent proceeds from the second end to the first end.

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