| 摘要 |
An electric motor has an armature rotatably accommodated inside a motor housing and a pair of magnets fixed to an inner surface of the motor housing so as to face the armature. The armature has an armature core 17 fixed to a rotating shaft 16 , and ten slots S 1 to S 10 formed on the armature core accommodate coils. These slots S 1 to S 10 are of four types that are different in shape, thereby enhancing a lamination factor of each coil. Also, these slots S 1 to S 10 are formed so as to be tilted in a rotating direction with respect to an axial direction of the rotating shaft 16 . Therefore, a magnetic imbalance caused by the slots S 1 to S 10 being formed in varying shapes is uniformized.
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