Patent ID: 8146943
Filing Date: 2012-04-03
Classification: B60R

Abstract:
1. A knee airbag device for a vehicle comprising: a knee airbag that is normally stored in a folded state in a storage section and is configured to receive a supply of a gas at the time of a collision of the vehicle and inflate and deploy toward knee regions of an occupant seated in a vehicle seat; and an airbag case that is disposed in the storage section, is configured to fold and store the knee airbag, has a through hole, has a side wall portion on a vehicle right side that is placed on the vehicle right side of a vehicle width direction center of the knee region on the vehicle right side, and has a side wall portion on a vehicle left side that is placed on the vehicle left side of a vehicle width direction center of the knee region on the vehicle left side; and a vent hole that is disposed in the knee airbag, aligns with the through hole in the airbag case and to vent the gas to the outside when the knee regions are in a near state with respect to the storage section of the knee airbag, and, when the knee regions are not in the near state with respect to the storage section of the knee airbag, moves to the outside of the storage section in accompaniment with inflation and deployment of the knee airbag and is blocked at the time of restraint of the knee regions.