| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique capable of achieving a high-rigidity and low-noise brushless motor.SOLUTION: A rotor comprises a circular rotor core 26, and a plurality of magnets 28. The rotor core 26 comprises an annular part 26c around a through hole 26a, a plurality of fan-like pole pieces 26d formed radially from the annular part, a plurality of magnet housing parts 26b radially formed between adjacent pole pieces, and a plurality of first magnetic flux barrier parts 26e formed in each region between adjacent magnet housing parts. The magnet housing part 26b includes a second magnetic flux barrier part 26b1 at an end on the rotary shaft side. The rotor core 26 includes a first magnetic flux barrier part 26e, and two magnetic paths 26f formed between the two second magnetic flux barrier parts 26b1 adjacent to the first magnetic flux barrier part. The two magnetic paths 26f branch in a different direction from the end on the rotary shaft side of the pole piece 26d toward the annular part 26c. |
