Patent ID: 8141902
Filing Date: 2012-03-27
Classification: B60R

Abstract:
1. An airbag device comprising: an airbag inflatable with gas generated by an inflator, the airbag having a front surface base fabric comprising a front surface of the airbag, a back surface base fabric comprising a back surface of the airbag, and internal tethers provided in an airbag body that restrict inflation; and a third base fabric that covers at least a portion of the front surface of the airbag and restricts inflation of the airbag during inflation, wherein the front surface base fabric of the airbag has a vent hole through which gas is discharged, wherein the third base fabric covers the vent hole, both side ends of the third base fabric being joined to the front surface base fabric, wherein the third base fabric is fixed to the front surface of the airbag and has such a length that the tension caused by inflation of the airbag is not applied thereto, wherein the third base fabric closes the vent hole through the use of a curved surface at the side portions of the front surface base fabric of the airbag during inflation, and wherein, while the airbag is in an inflated state, the third base fabric is broken and the vent hole is exposed so as to discharge gas, by the further inflation of the airbag resulting from an object pushing into the third base fabric.