| 摘要 |
<p>PURPOSE:To simplify the structure and to reduce the number of parts and also to reduce the weight by fitting a loading spring direct to a loading semiring gear and a guide block. CONSTITUTION:The loading spring 23 is directly suspended between the loading semiring gear 10 and the guide block 9 for the purpose of moving the guide block 9 by interlocking with a turning operation of the loading semiring gear 10. Consequently, the turning operation of the loading semiring gear 10 is directwise transmitted to the guide block 9 via the loading spring 23, so that the loading semiring gear 10 can be interlocked with the guide block 9 without providing a loading pin or lever. By this method, the structure can be simplified with light weight and also the number of parts can be reduced.</p> |
