| 摘要 |
PROBLEM TO BE SOLVED: To prevent the life from being shortened caused by excessive fastening of a handle part. SOLUTION: A projecting part 7 projecting to a cutout part 2 is provided on a handle part 8. When the fastening amount of a bolt 5 and a nut 6 becomes a specified amount or more, the end of the projecting part 7 is allowed to about on a part 9a of a mount 3.
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