| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor which is equipped with a cooling structure that can suppress deviated flow of a fluid flowing in a cooling space. SOLUTION: The motor 11 is equipped with a cylindrical case 13 which houses a rotor 17 and a stator 19. The case 13 has the cooling space 50, which is formed along substantially the entire circumferential direction and allows the fluid to circulate. A plurality of grooves 27 (irregularities) are formed along substantially the entire circumferential direction at the outer face of an inner cylinder 21 which faces the cooling space 50. COPYRIGHT: (C)2010,JPO&INPIT
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