| 摘要 |
PROBLEM TO BE SOLVED: To provide a hook member for fastening a corrugated plate preventing damage to the corrugated plate while resisting aged deterioration and being excellent in watertightness. SOLUTION: The corrugated plate 21 is secured to lightweight steel 22 by use of the hook member 1 comprising a hook member body 2 and elastic packing 3, the hook member body being integrally molded from a thermoplastic resin and having a gripping piece 13 on the upper surface of a disc-shaped seat part 12 and having a latching part 14 and a plurality of peripheral tongues 15 on the lower surface of the disc-shaped seat part 12, with the thermoplastic resin being transparent in color and having an aromatic polycarbonate ester structure. The latching part 14 is elastically deformed for restoration to prevent damage to the plate while resisting aged deterioration and maintaining elasticity, thus preventing the corrugated plate 21 from leaking, dropping or being lifted away.
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