Air bag cover with internal hinge configuration

摘要

A frangible cover for a vehicle air bag assembly having a displaceable flap portion of controlled flexibility for rotation in hinging fashion generally away from a tear seam at the interior of the cover and towards the perimeter of the cover to form an opening across the cover for egress of an underlying air bag cushion. One or more stiffness reducing members are arranged at the flap portion to control the internal stiffness of the flap portion and to facilitate ease of outward rotational displacement of the flap portion. Such stiffness reducing members may be arranged in a pattern extending in the region between the outer edge of the cover and a portion of an interior tear seam.