| 摘要 |
PURPOSE:To secure the locking between the locked part of a cover body and a locking member by making the support part of a leaf spring for applying energizing force to the locking member wider than the operating part. CONSTITUTION:The leaf spring 20a which energizes the locking member 11 is made wider at the support part 20a which is fitted and held in a groove formed in a half cassette 1 than at the operating part 20b which applies elastic force to the locking member 11. When the operating part 20b is as wide as before, the groove of the half case 1 where the leaf spring 20 is fitted becomes wider than before because the support part 20a needs to be situated therein, but this is covered without increasing the size of the shape of the half case 1.
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