Patent ID: 7954845
Filing Date: 2011-06-07
Classification: B60R

Abstract:
1. A knee-protecting airbag device comprising: an airbag with a base end attached to and accommodated in a vehicle body in front of an occupant; and an inflator that supplies gas to the airbag, the knee-protecting airbag device inflating and deploying the airbag from the base end to a position between the vehicle body and the knees of the occupant with the gas from the inflator, wherein the airbag is folded and accommodated so as to have a folding-in portion formed by folding a leading end in the deploying direction into the airbag; a pair of first roll-folded portions formed by roll-folding left and right ends of the airbag, whose leading end has been folded-in, toward each other toward a surface on a vehicle-body side; and a second roll-folded portion formed by roll-folding the leading end of the airbag in the deploying direction, whose left and right ends have been roll-folded, toward the base end toward the surface on the vehicle-body side, wherein the pair of first roll-folded portions are formed at a distance from each other so that the left and right ends of the airbag do not come into contact with each other, wherein the airbag has a tether disposed therein extending in a direction intersecting the deploying direction, the tether defining the inside of the airbag into a plurality of air chambers, wherein the folding-in portion is formed by folding the leading end into one of said plurality of air chambers at an extreme leading end in the deploying direction; and wherein at least one tether has a plurality of through holes that allow gas to pass therethrough and reach the leading end.