| 摘要 |
PURPOSE:To speed up access by providing a top, which contacts with the top of a needlelike roller bearing, in the hollow part of a pivot fixed to a carriage body and by inserting a leaf spring into the top with respect to a swing arm system. CONSTITUTION:A top 7 has an axial notch 9 for leaf spring insertion in its back surface 7a, and a leaf spring 10 is inserted into it. In the center of the axial flank 6a of the hollow part 6 of a pivot 3, a notch 11 wherein a pin 12 is inserted is provided. The supporting structure of this pivot 3 provides a stable spring constant over the large displacement range of the pivot, and the top 7 supports the pivot 3 as if it were supported at a fixed terminal. |
