To provide compact parking brake means without a complicated link mechanism.SOLUTION: Axle driving devices 4L, 4R comprises: a housing 41 for supporting axles 5L, 5R and storing therein an oil; a stepless speed change device 40 using the oil as a hydraulic oil; and a parking brake mechanism 20 for regulating rotation of the axles 5L, 5R. The parking brake mechanism 20 comprises: a brake rotor 21 capable of rotating coaxially to a motor shaft 48 serving as a shaft center; a lock member 22 which can be displaced between a first position X for engaging the brake rotor 21 and a second position Y where the brake rotor 21 is not engaged; and a spring member 24 for always energizing the lock member 22 to the first position X. The lock member 22 comprises an engagement part 22a fitted to a recess 21a at the first position X, and a non-engagement part 22b arranged on a position corresponding to the recess 21a at the second position, and there is provided a charge pump 70 for displacing the lock member 22 to the second position Y against the energization force F of the spring member 24 by hydraulic oil pressure.SELECTED DRAWING: Figure 5

    【課題】駐車ブレーキ手段を、複雑なリンク機構を用いずにコンパクトに構成する。【解決手段】車軸駆動装置4L・4Rは、車軸5L・5Rを支持し、内部に油を溜めたハウジング41と、該油を作動油として用いる無段変速装置40と、車軸5L・5Rの回転を規制する駐車ブレーキ機構20とを備え、駐車ブレーキ機構20は、モータ軸48を軸心として同軸で回転可能なブレーキロータ21と、ブレーキロータ21を係止する第1位置Xとブレーキロータ21を係止しない第2位置Yとに変位可能なロックメンバ22と、ロックメンバ22を第1位置Xへ常時付勢するバネ部材24とを有し、ロックメンバ22は、第1位置Xで凹部21aに嵌入される係止部22aと、第2位置Yで凹部21aに対応する位置に配置される非係止部22bとを備え、油圧によって、バネ部材24の付勢力Fに抗してロックメンバ22を第2位置Yに変位可能なチャージポンプ70を設けた。【選択図】図5


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    Titel :

    HYDRAULIC AXLE DRIVING DEVICE


    Weitere Titelangaben:

    油圧式車軸駆動装置


    Beteiligte:
    MATSUURA JUN (Autor:in) / IWAKI KOJI (Autor:in) / YASUDA AKIFUMI (Autor:in)

    Erscheinungsdatum :

    2019-09-19


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / F16H Getriebe , GEARING



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