Patent ID: 8556329

Claim:
A door panel comprising: an outer panel; an inner panel that is affixed to an inner surface of the outer panel and provided, at least at one lateral end thereof, with a reinforcing plate housing raised portion bulging in a direction perpendicular to the outer panel; and an internal reinforcing plate affixed between the outer panel and the reinforcing plate housing raised portion provided at said lateral end of the inner panel, and affixed to the outer panel, wherein: the inner panel includes: a plurality of flat hinge mounting surface portions formed on the reinforcing plate housing raised portion at said lateral end of the inner panel; and reinforcing groove portions, each of which is formed along at least a part of the periphery of each respective hinge mounting surface portion and protrudes from an inner surface closest to an inside of the door of the inner panel, the internal reinforcing plate includes: hinge mounting raised portions, each of which has a flat surface adapted to be in close contact with each respective hinge mounting surface portion of the inner panel; and reinforcing recessed portions, each of which extends along at least a part of the periphery of each respective hinge mounting raised portion and is adapted to fit to each respective reinforcing groove portion of the inner panel, and the door panel further includes hinges, each of which is attached to its respective hinge mounting surface portion of the inner panel and its respective hinge mounting raised portion of the internal reinforcing plate.