| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor the housing of which can be made compact. SOLUTION: A motor 1 includes a rotor 4, in which a plurality of permanent magnets 42 and 43 are arranged along a circumferential direction thereof; an inner-circumferential-side stator 5 arranged in the inner circumference of the rotor 4; and an outer-circumferential-side stator 6, arranged in the outer circumference of the rotor 4. For the motor 1, the relation is established: 0.9<Si(Do×π-To×So)/So(Di×π-Ti×Si)<1.1, where Si is the number of slots, Di is slot outside diameter, and Ti is the tooth width in the inner-circumferential-side stator 5, and So is the number of slots, Do is the slot outside diameter, and To is the tooth width in the outer-circumferential-side stator 6. COPYRIGHT: (C)2011,JPO&INPIT
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