| 摘要 |
PROBLEM TO BE SOLVED: To provide a permanent magnet motor of high performance by suppressing a variation in magnetic flux density between magnetic poles of a magnet, which is a cylindrical magnet oriented in one direction vertical to the axis of the cylinder through a vertical magnetic field molding method and magnetized into multiple poles and reducing the variation in torque. SOLUTION: A cylindrical magnet 1, oriented in one direction vertical to the axis of the cylinder, is manufactured by a vertical magnetic field molding method. When the number of poles magnetized in the circumferential direction of the cylindrical magnet 1 is 2n ((n) is a positive integer larger than 1 and smaller than 50), the number of teeth 2 of a stator to be combined with the cylindrical magnet 1 is 3k ((k) is a positive integer larger than 1 and smaller than 33) and where 2n≠3k.
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