Patent ID: 8376021

Claim:
Structural element for making a door leaf of a sectional door, which is movable along a predetermined path between a closed and an open setting, with a shell having two edge portions that run essentially perpendicular to the predetermined path and parallel to each other and that are folded back on themselves to form predetermined side structures, the shell having an outer surface that constitutes an exterior surface of the door leaf facing away from an interior space to be closed off in a closed setting and an inner surface opposite to the outer surface, wherein at least one side structure of the shell has a fastening area provided for attachment of at least one hinge for connecting structural elements arranged successively in a moving direction of the door leaf, wherein the fastening area of the shell has at least one positioning aid configured as a profiling extending perpendicular to the outer surface for a reinforcement strut, wherein the structural element further includes said reinforcement strut configured as an end cap spanning an edge at an end face of the shell, wherein said end cap extends roughly perpendicular to the side structures and has an engaging structure lying against a boundary surface of the fastening area and configured complementary to the profiling of the positioning aid, wherein the end cap has an outer leg with an outer fastening surface adjacent to the outer surface and an inner fastening surface at a distance from the outer fastening surface in a lengthwise direction of the at least one side structure and adjacent to the inner surface of the shell, and wherein the outer leg has a clamping tongue bounded by a slot and able to be bent into an interior of the end cap for pressing the outer surface of the shell against the outer fastening surface.