US Patent 8678118 Vehicle drive device

A vehicle drive device having two independent systems provided for two driving wheels, respectively, each system including a rotating electrical machine, an output member to be connected to a corresponding driving wheel, and a drive transmission system. The transmission also includes a counter deceleration mechanism, which connects the rotating electrical machine and the output member to each other. A case integrally accommodates the rotating electrical machines, the output members, and the drive transmission systems of the two systems. The rotation axes are provided so that their respective rotation axes are parallel to each other, and are positioned so as to overlap each other in the rotation axis direction. The rotating electrical machine of each system is provided with an output portion located on one side of the rotating electrical machine which is distal from the corresponding driving wheel in the rotation axis direction of the rotating electrical machine.