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    • 5. 发明专利
    • AC GENERATOR FOR VEHICLE
    • JPH09322466A
    • 1997-12-12
    • JP13986396
    • 1996-06-03
    • HITACHI LTD
    • MAEKAWA NORIYUKIHONDA YOSHIAKITAKAHASHI KENJIYOKOYAMA SHINGOMIYATA HIROICHI
    • H02K5/20H02K5/24H02K9/06
    • PROBLEM TO BE SOLVED: To improve cooling performance and to inhibit vibration by supporting a stator and rotor with front and rear brackets, forming air blowing means between a stator and a cooling cover covering the outer peripheral portion of the stator, and providing a cooling fin or heat transfer means o the inner periphery of the cooling cover. SOLUTION: A cooling cover 16 surrounding the outer peripheral portion of a stator core 7 is provided and is formed as part of a front bracket 9. A heat radiation fin 17 is provided in the inner peripheral portion of a cooling cover 16 and is formed in one united body with the front bracket 9 and the cooling cover 16. Front fins 34a and 34b provided inside the front bracket 9, and rear fins 35a and 35b are provided inside a rear bracket 10. A heat transfer member 27 is provided between the cooling cover 16 and the rear bracket 10. A rear fan 18 is provided at the side of the end face of rear bracket 10. A first front fan 19 is provided at the end face of the front bracket 9, and a second front fan 20 is provided at a portion projected out from the front bracket 9. Cooling wind flows from air blowing holes 21a and 21b in a manner as shown by arrows F1a to F6a and F1b to F6b, and each part is cooled off.