| 摘要 |
An AC generator for vehicles includes a rotor, a stator, a frame, a bearing retaining portion, and a resin-made cylindrical member. The bearing retaining portion is disposed in the frame, and retains a bearing that rotatably supports the rotor. The resin-made cylindrical member is disposed between the bearing and the bearing retaining portion, and an inner circumferential surface thereof has a simple cylindrical shape while an outer circumferential surface thereof has a thick portion in a part thereof. |
