| 摘要 |
PROBLEM TO BE SOLVED: To sufficiently restrain generation of noises offensive to the ears of a driver regardless of whether or not an electric motor 10 and a deceleration gear mechanism exist near the driver. SOLUTION: A rotating shaft 11 of the electric motor 10 is supported at the inside of a case 32 and a housing 33 by a pair of slide bearings 14, 14 provided at both edge parts and a ball bearing 35 rotatably provided at an intermediate portion. An inner ring 56 which constitutes the ball bearing 35 is fitted onto the intermediate portion of the rotating shaft 11, and an outer ring 54 is fitted in the inside of the housing 33 through an O-ring 51 which is an elastic body. Thus, energy of the rotating shaft 11 which is an oscillation source can be sufficiently absorbed in the O-ring on the way of an energy transmission path. COPYRIGHT: (C)2007,JPO&INPIT |
