Module cover for air bag device

Claim 1

A module cover for covering a container with an air bag in an air bag device, comprising: a cover member having an inner surface and a center portion; tear lines for tearing the module cover provided on the inner surface of the cover member, said tear lines including a first tear line extending in a transverse direction of the cover member, and second tear lines extending substantially perpendicularly to the first tear line and intersecting at both ends therewith to thereby form intersections, said second tear lines defining therebetween the center portion of the cover member; first adapter members fixed to the cover member outside the center portion to extend outwardly from the inner surface thereof, said first adapter members connecting the cover member to the container of the air bag device; side thick-walled portions integrally formed with the cover member and located adjacent to the respective second tear lines outside the center portion, each thick-walled portion facing each intersection and having a thickness larger than a thickness of the center portion and a length parallel to the second tear line adjacent thereto, said length being greater than a width of the first tear line so that a tearing operation started from the first tear line upon inflation of the air bag can continue to the second tear lines at the intersections; and second adapter members fixed to the cover member outside the center portion to be parallel to and spaced away from the second tear lines, each second adapter member having a thickness larger than the thickness of each side thick-walled portion to prevent a tearing operation started from the first tear line from continuing to the second adapter members.