| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor in which cooling effects of a stator core and a stator winding being wound around the stator core can be enhanced and a lifetime of the stator winding can be prolonged. SOLUTION: The motor comprises a rotor 13 provided with fins 14, and a stator disposed oppositely to the rotor 13. An insulation bobbin 6 interposed between a stator core 1 and a stator winding 5 wound around the stator core 1 and insulating them is provided with a plurality of cooling grooves 15 communicating to the inner circumferential side and the outer circumferential side in the radial direction. COPYRIGHT: (C)2005,JPO&NCIPI
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