| 摘要 |
PROBLEM TO BE SOLVED: To improve the workability and securely prevent a locking pin from coming off when locking it by passing through a shaft hole and locking it for preventing loosening of a member including a nut. SOLUTION: Bent parts 3, 4 having a springing force at one end or both ends are formed and are inserted into the shaft hole, and then the bent parts 3, 4 return to their original shapes to lock the locking pin.
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