| 摘要 |
PROBLEM TO BE SOLVED: To restrict load applied to a magnet from a cover.SOLUTION: In a rotor 52 used in a water pump, a distance R2 from the shaft center C of a rotor core 54 to the outer periphery 58A of a load receiving part 58 is set longer than a distance R1 from the shaft center C of the rotor core 54 to the outer periphery 56A of a magnet magnetic pole part 56. Therefore, when a rotor cover is fixed to the radially outside of the rotor body part 53, the radially inward load of the rotor core 54, applied to the rotor body part 53 from the rotor cover can be received by the load receiving part 58. Accordingly, since the application of the load on the magnet magnetic pole part 56 is restricted, load applied to a rotor magnet 60 from the rotor cover can be restricted. |
