| 摘要 |
PROBLEM TO BE SOLVED: To provide a hook capable of fixing a temporary horizontal member such as a scaffold board to a horizontal round bar to prevent it from rising without sacrificing the convenience of excellent detachability. SOLUTION: This hook comprises a holding part having an opening capable of being hooked to the horizontal round bar from the upper side, a locking part capable of holding the horizontal round bar by closing a part of the opening, a slide shaft formed integrally with the locking part, a support part in which the slide shaft is inserted and which slidingly rotatably supports the slide shaft, and a spring interposed between the support part and a spring receiver fitted to near the locking part of the slide shaft and biasing the locking part in the closing direction. The holding part is opened in the slide shaft by compressing the spring. An opening holding pin capable of being locked to the support part at the position to which the locking part is rotated. A slit allowing the opening holding pin to extend therethrough when the locking part is so directed as to be able to close the opening is formed in the support part. COPYRIGHT: (C)2008,JPO&INPIT
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