| 摘要 |
PROBLEM TO BE SOLVED: To obtain an electric rotating machine which reduces a cogging torque and which reduces a noise by a method wherein a magnet insertion hole is divided into a plurality of holes in the axial direction, the holes are formed so as to be shifted by a prescribed angle in the circumferential direction and permanent magnets are fixed inside the magnet insertion holes via a gap filler. SOLUTION: The size of every magnet insertion hole 6 is a little larger than the size of every permanent magnet, a gap filler which is used also as an adhesive is filled into the very small gap between every permanent magnet and every magnet insertion hole 6, and every permanent magnet 4A is buried in every magnet insertion hole 6 so as to be integrated with a laminated rotor core 3. Every permanent magnet 4A and every permanent magnet 4B which are divided into two in the radial direction are fixed to the laminated rotor core 3 so as to be in a positional relationship in which they are shifted by a prescribed angleδalong the circumferential direction of the laminated rotor core 3. When the permanent magnets are shifted by an arbitrary angle in the circumferential direction in this manner, they can have a skew effect. Consequently, the cogging torque of an electric rotating machine can be reduced, and its noise can be reduced.
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