ROTATING ELECTRIC MACHINE
PROBLEM TO BE SOLVED: To provide a rotating electric machine for improving its service life with a small space by waterproofing to a clearance between a rotating shaft 6 and end brackets 2A, 2B and cooling a bearing by a wind blow to the rotating shaft.SOLUTION: A disc-like member 10 fixed to a rota...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a rotating electric machine for improving its service life with a small space by waterproofing to a clearance between a rotating shaft 6 and end brackets 2A, 2B and cooling a bearing by a wind blow to the rotating shaft.SOLUTION: A disc-like member 10 fixed to a rotating shaft 6 and co-rotating with the rotating shaft 6 formes a labyrinth structure portion 12 between the end brackets 2A, 2B to prevent water permeation into a rotating electric machine casing. Fins 11 are provided on the inside of the disc-like member 10. Thus, air is blown from the fins 11 inside the disc-like member 10 to the bearings 4A, 4B in accordance with the rotations of the rotating shaft 6 and the disc-like member 10, thereby reducing an increase in temperature of the bearings 4A, 4B to improve the service life. |
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