| 摘要 |
PROBLEM TO BE SOLVED: To provide an automatic transmission capable of effectively realizing reduction in a center distance by adopting a winding transmission mechanism and ensuring excellent on-vehicle performance while reducing the axial dimension of the automatic transmission.SOLUTION: An automatic transmission 1 in which a transmission mechanism that includes a plurality of planetary gear sets, a friction fastening element, and an output unit 41, and a power transmission mechanism 2 are provided in sequence from an opposite side to a drive source on an axis of an input shaft 6, and in which an input unit 42 connected to the output unit 41 via a winding transmission mechanism 43, a speed-reduction planetary gear set 60, and a differential element 70 are provided in sequence from the opposite side to the drive source on a differential gear shaft 50, is configured so that the speed-reduction planetary gear set 60 is disposed to be closer to the opposite side to the drive source in an axial direction than the power transmission mechanism 2, the speed-reduction planetary gear set 60 and the power transmission mechanism 2 are disposed to overlap each other in a view from the axial direction, and a single constituent element 30 constituting the transmission mechanism 10 is disposed to be closer to the drive source than the output unit 41 and to overlap the speed-reduction planetary gear set 60 in the axial direction. |
