EMBEDDED MAGNET TYPE MOTOR

摘要

PROBLEM TO BE SOLVED: To provide an embedded magnet type motor which can reduce cogging torque and a torque ripple and can achieve its downsizing and higher efficiency, by enabling a magnet to be arranged easily in a storage hole. SOLUTION: This embedded magnet type motor is equipped with a stator which has a plurality of teeth and a rotor 3 which has a rotor core 11 where a hole 11c piercing itself axially to allow a magnet 12 to be arranged is formed. The magnet 12 is so shaped as to be constant in its axial direction as a whole. The magnet 12 is composed of a sintered magnet 21 which has inclinations 21a inclining in the direction of its width being roughly the circumferential direction from the side of its axial one end to the side of the other end, and plastic magnets 22 which are made so that the magnet 12 may be shaped to be axially constant, and arranged at both ends in the direction of its width where the inclinations 21a of the sintered magnet 21 are made. COPYRIGHT: (C)2006,JPO&NCIPI