| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hook structure restraining a hook from being turned to an unhooking position even if an impact is applied from a hooked object, in the hook pivoted in a state of being turnable to a hooking position hooked with the hooked object and the unhooking position. <P>SOLUTION: A pivot 2 of the hook 1 comprises a core member 21 made of a metal square material and an outer circumferential member 22 of an oval cross-section made of a synthetic resin and covering the outer circumference of the core member 21. A through hole 3 in the hook 2 comprises a circular hole 31 corresponding to the circumferential member 22 of the pivot 2 and allowing the member 22 to enter the hole 31 and a locking hole 32 having a diameter smaller than the diameter of the hole 31 and capable of being fitted with the core member 21 of the pivot 2, and both the sections are formed integrally and continuously at the base end 10 of the hook 1. When a load causing the hook 1 to move to the front end 11 side is applied from the hooked object 45 to the hook 1 at the hooking position, the outer circumferential member 22 of the pivot 2 is destroyed in the circular hole 31, and the core member 21 is fitted into the locking hole 32 to restrain the hook from turning to the unhooking position. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
