| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a coolant from leaking to an area between magnetic steel sheets from a coolant passage in a rotor core formed by laminating the magnetic steel sheets. <P>SOLUTION: A rotor core 20 has cavities extending in the rotation axial line direction of the rotor core. Permanent magnets 28 are respectively disposed in the cavities. Further, resin members 46 are formed in the cavities. A surface of each permanent magnet 28 and an inner surface of each resin member 46 form a coolant passage 30 where a coolant flows. A tube like structure is formed by each permanent magnet 28 and each resin member 46 and insulates the coolant flowing in the cooling passage 30 from the rotor core 20. <P>COPYRIGHT: (C)2013,JPO&INPIT |
