| 摘要 |
PURPOSE:To surely prevent disengagement of a gear, by placing a gear to a speed change position with a working lever, engaging a pawl to a fixed part at a rocking position of the working lever, providing said pawl to the working lever and receiving a gear disengaging load with the fixed part. CONSTITUTION:A working lever 4, slidably displacing an idler gear 2 to the axial direction, is pivotally supported to a bracket 7, fixedly provided to a case 1, through a pivotally supporting shaft 8. Then an operating lever 9 is concurrently provided to the working lever 4, simultaneously pivotally supported to the working lever 4 through a pivotally supporting shaft 10, and formed to bell crank lever shape, and one end of the lever 9 is formed to a fork to provide an end face cavity 9a, while the other end is provided with a pawl 9b and striking element 9c. Further the pawl 9b of said operating lever 9 is engaged to a notch 7c, formed to the bracket 7, when the gear 2 is located at a speed change position, and a gear disengaging load is received by the fixed part (bracket 7) through the pawl 9b, in this way, gear disengagement can be surely prevented. |
