| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor driving device for a vehicle that is excellent in quietness.SOLUTION: A motor driving device A for a vehicle includes: an electric motor 3 comprising an annular stator 6, and a rotor 7 rotating in the stator 6; a speed reducer 4 that reduces a speed of rotation inputted to an input shaft 30 connected to the rotor 7, and outputs the rotation by gears; and a differential gear 5 that distributes rotation outputted from the speed reducer 4 to right and left wheels. A bearing fitting surface 27 to which a bearing 15 on the side of the speed reducer 4 of the rotor 7 is fitted and a bearing fitting surface 28 to which a bearing 35 on the side of the electric motor 3 of the input shaft 30 is fitted are formed on the same member. |
