| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the occurrence of a defective cancel without lengthening a lever by a method wherein a cancel lever is rotated through rotation operation of a freely movable moving lever supported by first and second parallel levers. SOLUTION: A moving lever 83 is supported by means of first and second parallel levers 81 and 82 through pins 83a and 83b. Through moving operation of the moving lever 83 by operation of the moving lever 81 and the parallel lever 82, a cancel lever 55 is pressed by the moving lever 83 and the moving lever 83 effects rotation operation. Therefore, even when through operation of an active lever and a passive lever, an engagement point between the moving lever 83 and the cancel lever is changed, the rotation stroke of the cancel lever to the moving stroke of the moving lever 33 is kept in a constant through operation of the first and second parallel levers 81 and 82. This constitution prevents the occurrence of a defective cancel without lengthening the lever.</p> |
