| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor capable of suppressing cogging and of obtaining a proper counter-electromotive force even in a case where, at a salient pole of a stator core, a magnetic flux density in a non-excitation state of a trunk part around which a coil wire is wound is enhanced.SOLUTION: A motor 1 comprises: a stator core in which a plurality of salient poles 21 around which a coil wire is wound are formed in a circumferential direction; and a rotor having a cylindrical permanent magnet 62 in which a plurality of magnetic poles 620 are formed in the circumferential direction. When n is defined as an integer of one or greater, the number of the magnetic poles 620 is 2×n, and the number of the salient poles 21 is 3×n. At the salient pole 21, a magnetic flux density in a non-excitation state, of a trunk part 23 around which the coil wire is wound is 1.0 T or more, and further, is 1.3 T or more, and is 90% or more of a saturation magnetic flux density. In the permanent magnet 62, the magnetic poles 620 are formed with a skew angle θ from 65° to 75° in terms of electric angle.SELECTED DRAWING: Figure 2 |
