Patent attributes
Axial forces on the shins of small-bodied occupants and medium-bodied occupants may be suppressed or prevented, and protective performance of the knee areas of large-bodied occupants is assured. A vehicle knee airbag device is equipped with a knee airbag main body portion that is formed in a thin bag shape and that inflates and expands from below to above along a design surface of an instrument panel floor when gas is supplied thereto. A protection portion of the knee airbag main body portion has a size capable of covering both knees of an occupant, from small-bodied occupants to large-bodied occupants. A U-shaped lower tether is disposed in an upper portion of the interior of the protection portion; vertical direction dividing portions of the lower tether extend to the upward side from portions that correspond with both knees of medium-bodied occupants.
