| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vehicle driving device which can control stress concentration on an oil hole formed in a shaft member. <P>SOLUTION: The vehicle driving device is provided with a rotor shaft 31, a gear part 46, and a bearing 41 which supports the rotor shaft 31 with flexible rotation. The rotor shaft 31 has a spline part 36 in which a spline is formed, and the gear part 46 is arranged on the outer periphery of the rotor shaft 31. The gear part 46 is brought into spline engagement with the spline part 36, and rotates with the rotor shaft 31. The bearing 41 is arranged at a distance away from the spline part 36 in the rotary shaft direction of the rotor shaft 31, and the oil hole 34, in which the oil supplied to the spline part 36 and the bearing 41 circulates, is formed in the rotor shaft 31. The oil hole 34 is arranged in the area where the spline part 36 and the gear part 46 are engaged with each other in the rotary shaft direction of the rotor shaft 31. <P>COPYRIGHT: (C)2009,JPO&INPIT |
