Patent ID: 7770915

Claim:
A cover body covering an air bag apparatus, the cover body being integral with an interior panel of a vehicle, the cover body comprising: a covering portion made of polyolefin resin, having a door portion defined by a tear seam in a closed-loop shape in a back surface of the covering portion; and a backing portion which is joined to the back surface of the covering portion including a back surface of the door portion, the backing portion being made of thermoplastic olefin which is softer and has a greater elongation than the polyolefin resin; wherein the backing portion comprises a reinforcing portion joined to the back surface of the door portion, a surrounding base which is joined to an outer surrounding portion of the back surface of the covering portion that surrounds the door portion and has an attachment portion, and a hinge portion having a first end joined to the reinforcing portion and a second end joined to the attachment portion near an edge portion of the surrounding base at a location away from the back surface of the covering portion so that a space portion is defined between the back surface of the covering portion and a location on the attachment portion where the second end of the hinge portion joins the attachment portion.