Electric power unit for vehicle

摘要

[SUBJECT] To provide an electric power unit for a vehicle, which requires small numbers of parts and assembly processes and which is also capable of reducing the weight and securing the stiffness of a transmission case. [MEANS FOR SOLUTION] A second gear case portion 22 housing a secondary reduction gear train 14 is provided integrally continuous to a rear end of a shaft case portion 21 housing a propeller shaft 11. A first opening portion 23 for inserting the propeller shaft 11 and a drive gear 17 of the secondary reduction gear train 14 and for attaching a first bearing 33 supporting a rear portion of the propeller shaft 11 is provided in a front end of the shaft case portion 21. In addition, a second opening portion 24 for inserting a driven gear 18 of the secondary reduction gear train 14 and a rear axle holder 48 holding a bearing 47 supporting a rear axle 12 is provided in one side portion of the second gear case portion 22.