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Knee protecting airbag device

  • US 8,220,830 B2
  • Filed: 07/29/2010
  • Issued: 07/17/2012
  • Est. Priority Date: 07/07/2000
  • Status: Expired due to Term
First Claim
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1. A knee-protecting airbag device comprising:

  • an airbag inflatable for protecting knees;

    a housing that houses the airbag; and

    means for curving the airbag upward at inflation of the airbag, whereinthe airbag includes a knee-side wall deployable towards the knees and a vehicle body side wall deployable away from the knees,the airbag expands and inflates rearward and upward from the housing;

    the airbag includes a first tether and a second tether that respectively connect the knee-side wall to the vehicle body side wall so as to regulate a thickness of the airbag, the second tether being located at a rear of the first tether,a length of the airbag between positions where the first tether and the second tether are connected to the vehicle body side wall is shorter than a length of the airbag between positions where the first tether and the second tether are connected to the knee side wall such that a rear end region of the airbag curves upward at inflation, the second tether being located in a front-rear direction between the first tether and the rear end region of the airbag that is curved upward,an inflator for feeding an inflation gas to the airbag is located in a front position opposite to the rear end region of the airbag, the inflator being located in the front-rear direction anterior to the first tether and the second tether at airbag inflation and is secured to the housing,the first tether being positioned in a front-rear direction in front of the second tether and between the inflator and the second tether,the front-rear direction is from the inflator which is the front to the rear end region which is the rear.

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