Apparatus for improved detachment of the deployment door of an airbag assembly

摘要

The deployment door positioned in a panel of a vehicle is opened by an airbag module located rearwardly of the deployment door. A device is provided for detaching the door at a tear region from the remaining area of the panel, thereby providing a doorway outlet through the panel for the passage of an inflating airbag. A tear structure has a distal end in the form of an outwardly rounded bump cutter positioned and extending outwardly toward the tear region and a front surface of the panel, thereby reducing the distance of travel of the cutter through the foam in the panel to the tear region which reduces the force required to tear the foam. The outwardly rounded bump of the tear structure in one embodiment may be in the form of a closed loop. The deployment door may be completely contained within and surrounded by the panel before opening or may have one edge bordering on the edge of the panel.