| 摘要 |
An automatic transmission (10) for a vehicle having a plurality of gear trains provided between an input shaft (13) and an output shaft (14), comprises a hollow shaft (43) coaxially including the input shaft (13), a particular forward drive gear (23a) rotatably mounted on the hollow shaft, a forward driven gear (23b) integrally mounted on the output shaft (14) and constantly meshing with the forward drive gear (23a), a reverse drive gear (27) rotatably mounted on the input shaft (13) adjacently to the forward drive gear (23a), a friction clutch (41) provided between the input shaft (13) and the hollow shaft (43) for selectively transmitting power from the input shaft (13) to the hollow shaft (43), a changeover hub (33) integrally mounted on the hollow shaft (43) between the particular forward drive gear (23a) and the reverse drive gear (27), an first idler gear (28a) constantly meshing with the reverse drive gear (27), a second idler gear (28b) integrally formed with the first idler gear (28a) and constantly meshing with the forward driven gear (23b) and a changeover member provided between the particular forward gear and the reverse drive gear for engaging the changeover hub (33) either with the particular forward drive gear or the reverse drive gear. <IMAGE> |
