| 摘要 |
PROBLEM TO BE SOLVED: To provide a Lundell type motor capable of preventing magnetic flux of a field magnet from leaking to enhance output of a motor while, keeping a fastening force to a rotation shaft of a rotor core.SOLUTION: In a first and a second core bases of a first and a second rotor cores 20 and 30, through holes into which a rotation shaft 6 is press-fitted to be fixed are formed at centers of the core bases, respectively. Around the circumference sides of shaft bearings 8 and 9 which the through holes face, boss sections 21e and 31e are formed, respectively. The first and the second rotor cores 20 and 30 are arranged so that the bearings 8, 9 and the boss sections 21e, 31e are alienated from each other relative to the bearings 8, 9. Outer diameters D1, D2 of the boss sections 21e, 31e are smaller than outer diameters Da, Db of the bearings 8 and 9. |
