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Curtain airbag system

  • US 8,590,926 B2
  • Filed: 05/24/2012
  • Issued: 11/26/2013
  • Est. Priority Date: 05/24/2011
  • Status: Active Grant
First Claim
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1. A curtain airbag system for a vehicle, comprising:

  • an inflator that generates gas; and

    a curtain airbag that is stored in a folded state in an upper edge portion of an opening of a vehicle body through which a passenger gets in or off, the curtain airbag being operable to be inflated with gas supplied from the inflator, and deployed downward from the upper edge portion of the opening of the vehicle body, whereinthe curtain airbag comprises;

    a gas supply passage that is deployed in a cylindrical shape that extends in a longitudinal direction of the vehicle, along the upper edge portion of the opening, in the event of a side impact and rollover of the vehicle, so as to guide at least a part of the gas supplied from the inflator, toward the front of the vehicle;

    a first deployment portion to which gas is supplied from the gas supply passage in the event of a side impact or rollover of the vehicle, so that the first deployment portion is deployed downward in a vertical direction of the vehicle, so as to cover a region below the gas supply passage and above a belt line of the vehicle, the first deployment portion is a front main chamber;

    a second deployment portion to which gas is supplied from the inflator at least in the event of rollover of the vehicle, so that the second deployment portion is deployed at a vehicle front side of the first deployment portion, such that a lower end portion of the second deployment portion is located below the belt line; and

    a gas-flow guide portion located at the vehicle front side of a communicating portion that communicates with the gas supply passage and the front main chamber, and the gas-flow guide portion is located above the front main chamber, such that at least a part of the gas-flow guide portion projects downward beyond an imaginary line that extends from a lower end of the gas supply passage in the longitudinal direction of the vehicle, and the gas-flow guide portion is operable to block gas flowing toward the front of the vehicle through the gas supply passage, and guide the gas toward the front main chamber, such that most of the gas is directed toward the front main chamber.

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