発電機

Abstract

(57)【要約】 【課題】 ポールコア33の端面に送風装置7を有する 車両用交流発電機1の軸方向寸法を短縮することにより 車両用交流発電機1の小型化を達成する。 【解決手段】 送風装置7の環状ブレード列の径方向の 内側に2個の集電環41と2個のブラシ51を配置して 車両用交流発電機1の軸長を短縮し、しかも2個の集電 環41と2個のブラシ51を収容する収容室48を形成 する集電環カバー61を極めてシンプルな円筒状の壁部 材とすることにより、送風装置7の環状ブレード列の全 周に向けて均等に空気を吸い込む吸い込み空間を形成し た。そして、リヤハウジング12に固定されたブラシホ ルダ59と集電環カバー61によって2個の集電環41 の周囲を取り囲み、集電環カバー61とポールコア33 の端面に取り付けられた送風装置7の支持板部44との 間に、収容室48内の密閉性を高める微小間隙47を設 けた。
PROBLEM TO BE SOLVED: To achieve a compact configuration of an AC generator for a vehicle by shortening the dimension in the axial direction of the generator having a blower at the edge of a pole core. SOLUTION: Two current collector rings 41 and two brushes 51 are arranged inside the ring-shaped blade line of a blower 7 in the radial direction, and the axial length of an AC generator 1 for a vehicle is shortened. Furthermore, a current collector ring cover 61 forming a housing chamber 48 housing two current collector rings 41 and two brushes 51 is made to be a very simple cylindrical wall member. Thus, a sucking space for uniformly sucking air is formed toward the entire surface of the ring-shaped blade line of the blower 7. The surrounding parts of two current collector rings 41 are surrounded with a brush holder 59 and the current collector ring cover 61, which are fixed to a rear housing 12. A minute gap 47, which enhances the tightly closing property in the housing chamber 48, is provided between the current collector ring cover 61 and a supporting plate part 44 of the blower 7, which is attached to the edge of a pole core 33.

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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    JP-2013106361-AMay 30, 2013Mitsubishi Electric Corp, 三菱電機株式会社Control device-integrated rotary electric machine
    WO-2015159761-A1October 22, 2015株式会社豊田自動織機Mécanisme à bagues collectrices et machine dynamo-électrique comportant le mécanisme à bagues collectrices