PROBLEM TO BE SOLVED: To provide a motor drive unit A for a vehicle which dispenses with an electromagnetic motor, a control device or the like by using an oil pump 42 to be operated by using a reduction gear drive force, can be saved in a space and reduced in cost, and can use an injection device to widely feed oil to a gear-meshing part, a bearing part or the like at high liquid pressure and high injection speed or by spraying a lubricant in a spray state.SOLUTION: A relief valve 43c is arranged in an oil passage 42b between an oil pump 42 and an injection device (or a discharge nozzle 42c), an electric motor 1 is rotated at a high speed by maintaining constant the hydraulic pressure of the discharge nozzle 42c to the injection device, and thus, even if a discharge amount of the oil pump 42 largely exceeds an injection pressure which is necessary for the injection device of the oil pump 42, injection at high hydraulic pressure can be prevented and damage of the injection device can be protected.SELECTED DRAWING: Figure 2

    【課題】 減速機駆動力を利用し駆動させるオイルポンプ42を用いることにより、電磁モータや制御装置等を不要として、省スペース化、低コスト化が可能で、しかも歯車噛合い部、軸受部などへの給油を、噴射装置を用いて高い液圧、噴射速度や、噴霧状態の潤滑油を噴霧し、広範囲に給油することができる車両用モータ駆動装置Aを提供する。【解決手段】 オイルポンプ42と噴射装置(吐出ノズル42c)間の油路42bにリリーフバルブ43cを設け、吐出ノズル42cの噴射装置への油圧を一定に保つことにより、電動モータ1が高速回転し、オイルポンプ42の吐出量がオイルポンプ42の噴射装置に必要な噴射圧を大幅に超えた場合でも、高い油圧によるインジェクションや噴射装置等、噴射装置の破損を保護するようにした。【選択図】 図2


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    Title :

    MOTOR DRIVE UNIT FOR VEHICLE


    Additional title:

    車両用モータ駆動装置


    Contributors:

    Publication date :

    2017-08-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16H Getriebe , GEARING / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F04C ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS , Rotationskolben- oder Schwenkkolbenmaschinen [Kraft- und Arbeitsmaschinen] für Flüssigkeiten



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