Invention Patent
JP2012125034A Permanent magnet type rotary electric machine and manufacturing method for rotor thereof 审中-公开
永磁电机型旋转电机及其制造方法

Permanent magnet type rotary electric machine and manufacturing method for rotor thereof
Abstract:
PROBLEM TO BE SOLVED: To provide a permanent magnet type rotary electric machine in which magnetized permanent magnets can be inserted after formation of a rotor and the magnets are prevented from jumping out.SOLUTION: The permanent magnet type rotary electric machine comprises: a stator including a stator core which has multiple slots for storing stator coils inside; a rotor which is arranged opposing to the stator with a prescribed clearance and includes a rotor core equipped with magnet insertion holes to bury permanent magnets in a manner such that the polarity of the each magnet is changed; and end plates provided at both axial ends of the rotor core. One of the end plates provided at the both axial ends of the rotor has magnet insertion holes, and the magnet insertion holes arranged on the end plate are filled with non-magnetic substances for closing the magnet insertion holes.
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