| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a multiplex rotor motor suppressing infiltration of lubrication oil to an air gap between an inner rotor and an outer rotor and having less power loss and high motor efficiency. <P>SOLUTION: The multiplex rotor motor 10 includes: the inner rotor 20; the outer rotor 40 supporting an outer rotor core 43 by support walls 41 and 42; and a stator 12 confronted with the outer rotor 40 via a radial direction gap to be arranged. A plurality of through holes 51 and 52 passing in an axial direction are formed in the support walls 41 and 42 by separating them in a circumferential direction. A groove portion 56 directing inward in the radial direction is formed between the adjacent through holes 51 and 52 for the circumferential direction. <P>COPYRIGHT: (C)2012,JPO&INPIT |
