| 摘要 |
PURPOSE: A hook pin is provided to prevent the hook pin from escaping from the mounting plate during transportation, by strengthening the contact surface between the mounting plate and the coupling plate. CONSTITUTION: A hook pin(11) has a main body(13) with a predetermined length, and a stopper(15) having a diameter larger than the diameter of the main body is formed integrally with an end of the main body. The other end of the main body has a groove(17), and a coupling plate(19) is hinge-mounted by a fixing pin(21), in the groove in such a manner that the coupling plate is rotatable. The coupling plate has an end connected to an end of an elastic member(25) which has the other end connected to the groove. The coupling plate has a central portion which is hinge-mounted in the groove through the fixing pin, a free end(23) bent at a predetermined angle, and the other end having a connection groove(27) and a connection pin(29) for connection with the elastic member.
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