| 摘要 |
A hinged, composite door having a vertically extending series of horizontally extending panels, adjacent panels of which are hinged to one another. Each panel has a thicker central layer of a lightweight material sandwiched between thin, inner and outer sheet metal layers. A hard, durable insert with a shank portion and an enlarged head portion is provided at a juncture between adjacent panels, the insert having a shank portion embedded in a recess in the central layer of one of the panels and an enlarged head portion that extends beyond the one of the panels to be received in a complementally-shaped recess of the central layer of the adjacent panel when the panels are in alignment with one another.
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