| 摘要 |
PROBLEM TO BE SOLVED: To provide a cooling mechanism of a coil where a reduction in diameter to the utmost limit is attained. SOLUTION: The cooling mechanism of a coil comprises: a shaft 20 wherein an oil feeding passage 22 of a cooling oil L is formed in the axial direction; injection nozzles 30A, 30B communicating with the oil feeding passage 22 formed in the shaft 20; and reflection cones 42, 46 which make the cooling oil L injected from the injection nozzles 30A, 30B into a splashed or a mist state, and in which a tilting surface at a specified tilting angle for guiding the cooling oil L to the coil end 16a of the coil 16. If the reflection cone is integrally formed with both side covers 40, 44, no component for cooling the coil end 16a has to be separately provided to the outer periphery of the coil end 16a and the shaft 20, with a reduction in the number of components and further reduction in size. COPYRIGHT: (C)2007,JPO&INPIT
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