| 摘要 |
PROBLEM TO BE SOLVED: To easily adjust clearance between a guide lever and a stopper by providing a stopper member of integrally constituting a receiving plate and a nut for restricting an operation range of the guide lever energized to the guide rail side. SOLUTION: The stopper member 21 comprises the receiving plate 22 and the nut 23. A projection part 22a is formed on the receiving plate 22, and this projection part 22a is rotatalby engaged with a the nut 23 to be constituted so as to mutually slide in the rotational direction while integrally forming the receiving plate 22 and the nut 23. With this constitution, since the stopper member 21 is integrally constituted so that the receiving plate 22 and the nut 23 can freely rotate between mutual ones, the stopper member 21 does not move in clearance with a guide lever 8. Thus, the clearance between the stopper member 21 and the guide lever 8 can be easily adjusted to a prescribed dimension.
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