Patent ID: 8808128

Claim:
A hybrid drive system comprising: an input member that is drivingly connected to an engine; a first rotating electric machine; an output member; a counter gear mechanism: a second rotating electric machine arranged on a different axis than an axis that the first rotating electric machine is arranged on; a power distributing apparatus that distributes and transmits torque that is transmitted to the input member to the first rotating electric machine and the output member; an output gear capable of outputting torque transmitted to the output member to a wheel side, the output gear being drivingly connected to the second rotating electric machine through the counter gear mechanism and the output gear being drivingly connected to the wheel side through the counter gear mechanism; and an output bearing that is arranged on a radially inner side of the output member and rotatably supports the output member from the radially inner side, wherein: the entire power distributing apparatus is arranged overlapping with the output member at a position in an axial direction on the radially inner side of the output member, a ring gear of the power distributing apparatus is integrally provided with the output member on an inner peripheral surface of the output member, the output gear is integrally provided with the output member on an outer peripheral surface of the output member, the output bearing and the output gear are arranged overlapping at a position in the axial direction; the output bearing and the output member are arranged overlapping at a position in the axial direction, the power distributing apparatus and the first rotating electric machine are arranged in this order along the axial direction from the engine side, the second rotating electric machine is arranged so as to: (1) overlap with a rotation shaft of the counter gear mechanism in a radial direction, (2) overlap with the first rotating electric machine in the axial direction and (3) not overlap with the output member in the radial direction, and the output bearing is arranged on the engine side with respect to the power distributing apparatus in the axial direction.