| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve the structure that can secure a torque transmission capacity of a friction roller type reduction gear 2b in which an electric motor 1a, the friction roller type reduction gear 2b, a transmission 3a and a rotation transmission device 4a can use mutually different kinds of lubricant, while making each of these elements 1a, 2b, 3a and 4a demonstrate each performance enough. <P>SOLUTION: A casing 32 that stores a driving device for an electric vehicle comprises: a motor housing part 33; a reduction gear housing 34, a transmission housing 35; and a rotation transmission device housing 36. Each of these housings 33, 34, 35, and 36 are united and integrated. Then seals 50a and 50b are installed between the motor housing part 33 and the reduction gear housing 34, and between the reduction gear housing 34 and the transmission housing 35 respectively. <P>COPYRIGHT: (C)2013,JPO&INPIT |
