Patent ID: 8186707

Claim:
A knee airbag device for a vehicle, comprising: a knee airbag that is placed in a folded-up state before a collision and configured to be able to receive a supply of gas and expand and deploy toward the side of a knee portion of an occupant at the time of a collision of a vehicle; upper and lower tethers that are each provided to extend in a vehicle width direction at the inside of the knee air bag, arranged to be separated from each other in a vehicle vertical direction, configured to be able to regulate a bag thickness of the knee airbag at the time of expansion and deployment, and formed so that a vertical clearance therebetween increases approaching vehicle width direction end portions of both the upper and lower tethers; and an inflator that is able to eject gas to supply the gas between the upper and lower tethers at the inside of the knee airbag at the time of the collision of the vehicle, wherein both of the end portions of the upper side tether curve or incline toward a vehicle upper side, and both of the end portions of the lower side tether curve or incline toward a vehicle lower side.