| 摘要 |
PROBLEM TO BE SOLVED: To provide a support structure of a rotor shaft which can secure an elastic force without being elongated in an axial direction, and can sufficiently obtain a buffer effect of a tooth hammering sound.SOLUTION: In a support structure 12 of a rotor shaft, a friction damper 10 in which an annular or cylindrical core material 44 and an elastic member 46 are fit to each other is pressure-inserted into a clearance between opposing faces of an external peripheral face 43 of a first rotating shaft 26 and an internal peripheral face 41 of the rotor shaft 22 of an electric motor 20 in a radial direction, and a rib 48 and a rib 50 which are inclined to a rotational axial direction, and fit to each other are arranged at contact faces of the core material 44 and the elastic member 46. Therefore, a force F which is imparted by the core material 44 to a vertical direction of the rib 50 of the elastic member 46 in a longitudinal direction is lowered, and the apparent torsional toughness of the elastic member 46 becomes large. By this constitution, an apparent elastic force of the elastic member 46 is increased without elongating an axial dimension, and a friction force can be secured.SELECTED DRAWING: Figure 4 |
