| 摘要 |
The rotor (32) includes: a rotor core (32a) including stacked electromagnetic steel sheets; and a rivet (34) clamping the rotor core (32a) at both axial ends of the rotor core (32a). The balance weight mechanism (60, 70) includes: an insertion portion (68, 78) into which drive shaft (40) is press fit; and a flat portion (67, 77) forming a flat surface to an end of the drive shaft (40). The balance weight mechanism (60, 70) is placed to an axial end portion of the rotor (32) to cover a head (34b) of the rivet (34). |
