STEPPED AUTOMATIC TRANSMISSION DEVICE, POWER UNIT WITH THE TRANSMISSION DEVICE, AND MOTORCYCLE WITH THE POWER UNIT

摘要

A transmission device that is compact in size in the direction of the axis of an input shaft and in which the distance between the input shaft and an output shaft is relatively small. The transmission device (31) includes a first clutch (55) having a first rotating shaft (53) and a second rotating shaft (54) that are arranged in the direction perpendicular to the direction of the axis of the input shaft (52) and also having a third rotating shaft (64); a first shift gear pair (86) having a first gear (58) that rotates together with an output-side clutch member (57) and also having a second gear (63); a first transmission gear pair (84) having a third gear (87) that rotates together with the first rotating shaft (53) and also having a fourth gear (75); a second transmission gear pair (85) having a fifth gear (74) that rotates together with the second rotating shaft (54) and also having a sixth gear (78); a second clutch (70); and a second shift gear pair (91) having a seventh gear (73) that rotates together with an output-side clutch member (72) and also having an eighth gear (77). At least either of an axis (C2) and an axis (C4) is not present on a plane (P).