| 摘要 |
<p>A frangible cover (130, 230, 330, 430, 530, 630, 730, 830) for a vehicle air bag assembly having a displaceable flap portion (150, 250, 350, 450, 550, 650, 750, 850) of controlled flexibility for rotation in hinging fashion generally away from a tear seam (144, 244, 344, 444, 544, 644, 744, 844) at the interior of the cover (130, 230, 330, 430, 530, 630, 730, 830) and towards the perimeter of the cover (130, 230, 330, 430, 530, 630, 730, 830) to form an opening across the cover (130, 230, 330, 430, 530, 630, 730, 830) for egress of an underlying air bag cushion. One or more stiffness reducing members (160, 260, 360, 460, 560, 660, 760, 860) are arranged at the flap portion (150, 250, 350, 450, 550, 650, 750, 850) and to facilitate ease of outward rotational displacement of the flap portion (150, 250, 350, 450, 550, 650, 750, 850). Such stiffness reducing members (160, 260, 360, 460, 560, 660, 760, 860) 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 (144, 244, 344, 444, 544, 644, 744, 844).</p> |
