MAGNET EMBEDDED TYPE MOTOR

摘要

PROBLEM TO BE SOLVED: To provide a magnet embedded type motor that can easily fix permanent magnets to insertion holes by utilizing magnetic forces of the permanent magnets. SOLUTION: In the magnet embedded type motor in which a plurality of the insertion holes 23 for inserting and embedding the permanent magnets 22 are formed inside the radial direction apart from the external periphery of a rotor core 21, the permanent magnets 22 are arranged at a position where a gap between the external peripheral surface 22b formed at the external side in a rotor radial direction in the permanent magnet 22 and the external peripheral wall surface 23e of the insertion hole of the rotor core 21 that faces the external peripheral surface 22b is smaller than a gap between the internal peripheral surface 22f formed inside the rotor radial direction in the permanent magnet 22 and the internal peripheral wall surface 23f of the insertion hole of the rotor core 21 that faces the internal peripheral surface 22f. COPYRIGHT: (C)2007,JPO&INPIT