KNEE AIRBAG DEVICE FOR VEHICLE

A knee airbag device for a vehicle is provided that is capable of effectively protecting both knees of a seat occupant, regardless of position, shape or the like of an airbag door relative to the seat. In a passenger seat knee airbag device (10), a tear line (52) of an airbag door retainer (42) is broken and airbag doors (54) are deployed upward and downward by deployment force of a knee airbag (86) that receives a gas supply from an inflator. Thus, the knee airbag (86) is deployed toward the knees of the occupant through an aperture portion formed in the airbag door retainer (42). A tear line (102) of a form that is non-symmetrical between left and right is formed in a retaining sheet (100) that is for retaining the knee airbag (86) in a folded state. Thus, timings of deployment of the airbag doors (54) by inflation pressure of the knee airbag (86) are caused to differ between a left side portion and a right side portion.