| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem of a conventional hook that a mechanism for holding a hook tool to prevent a fall is complicated and has the large number of parts of a support tool and that a manufacturing price is expansive, assembling labors are needed, and occurance of a malfunction due to a breakdown and damage of the parts is often. SOLUTION: The thin and nearly cylindrical support tool 1 provided with an opening 1a at a central part of a bottom surface thereof and provide with a receiver part 1d curved downward in a bottom part 1c in both sides of the opening 1a is integrally formed by using metal and synthetic resin. The hook 2 to be hooked and removed on/from the support tool 1 has a shaft 3 provided with a lateral rod 4 having a circular lower surface at one end thereof, and a hook part 5 is connected to the other end of the shaft 3 freely to turn.
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