Patent ID: 8549959

Claim:
A hybrid drive system, wherein an input shaft of an automatic transmission device, a clutch, an intermediate shaft, and a first gear are disposed on a first shaft coaxial with an engine output shaft, an electric motor, and a second gear provided on an output shaft of the electric motor are disposed on a second shaft different from the first shaft, and a rotation of the engine output shaft is transmitted to the input shaft of the automatic transmission device through the clutch and the intermediate shaft, and a rotation of the electric motor is transmitted to the input shaft of the automatic transmission device through the second gear and the first gear, wherein a first support wall and a second support wall that are integrated with a case are respectively provided on an axial front side that is an engine output shaft side and an axial rear side that is an automatic transmission device side of the first gear, the first gear and the intermediate shaft are integratedly formed with the intermediate shaft provided extending from the axial front side of the first gear, and the intermediate shaft is rotatably supported by the first support wall through a bearing, the clutch is disposed between the intermediate shaft and the engine output shaft on an axial front side of the first support wall, and a front side of the input shaft of the automatic transmission device is rotatably supported by the second support wall, and connected to a rear side of the intermediate shaft through a spline.