Patent ID: 7052433

Claim:
An automatic transmission, comprising: an input shaft that rotates on the basis of an output rotation of a drive power source; a planetary gear unit having first, second, third and fourth rotation elements; a reduced rotation output unit for selectively outputting a reduced rotation obtained by reducing rotation of the input shaft to the first rotation element; a first clutch interposed between the input shaft and the second rotation element; a second clutch interposed between the input shaft and the third rotation element; and an output member that outputs rotation of the fourth rotation element to a driven wheel transmission mechanism, wherein the reduced rotation output unit is arranged at one side of the planetary gear unit in an axial direction, the first and second clutches are arranged at the other side of the planetary gear unit in the axial direction, and the output member is arranged between the first and second clutches and the planetary gear unit, wherein the first clutch is connected to the second rotation element via an inner peripheral side of the output member, and the second clutch is connected to the third rotation element via an outer peripheral side of the first clutch and an inner peripheral side of the output member.