| 摘要 |
PURPOSE:To reduce the noise at switching time and wearing by providing the spring which is relatively slidable in the axial direction within a certain range between the shift fork and the coupling sleeve. CONSTITUTION:The coupling sleeve 4 slidably fitted on the peripheral surface of the synchro-hub 2 is engaged with the shift fork 5 by the groove 4a. The sliding piece 5c of the wear resisting material which is projected by the spring 5b is provided in the hole 5a made in the shift fork 5 in the axial direction so that the sliding pieces 5c on the left and the right are alternatively projected until the tops contact the side walls 4b, 4c of the groove 4a of the coupling sleeve 4. Then, the forward gear 6 contacts the stopper 18 formed on the main shaft 1, the backward gear 12 is restricted by the stopper ring 19, and the synchro-hub 2 is tightly held by the forward and backward gears 6, 12. |
