PROBLEM TO BE SOLVED: To improve cooling performance of a drive device for an electric automobile with lubricant to thereby extend a travel range and improve rating output.SOLUTION: In a drive device for an electric automobile, by providing an open hole 57 in a cylindrical part 51 of an outer pin housing 50, lubricant that did not contribute to lubrication of each part, among lubricant scattered inside a speed reducer B with rotation, is scattered from the open hole 57 to the outer part of the outer pin housing 50, and adheres to the inner diameter surface of a casing 22b; and for a period until lubricant adhering to the inner diameter surface of the casing 22b flows into an oil tank 41 in the lower part of the casing 22b with gravity, heat of lubricant is thermally conducted to the casing 22b, and temperature of lubricant is reduced.

    【課題】 潤滑油による電気自動車用駆動装置の冷却性能を向上させて、航続距離延長、定格出力向上を図ることを課題とする。【解決手段】 外ピンハウジング50の円筒部51に貫通孔57を設けることにより、減速機Bの内部で回転に伴い飛散した潤滑油の内、各部の潤滑に寄与しなかった潤滑油が、貫通孔57から外ピンハウジング50の外部に飛散し、ケーシング22bの内径面に付着するようにして、このケーシング22bの内径面に付着した潤滑油が重力によりケーシング22bの下部のオイルタンク41に流れ込むまでの間に、潤滑油の熱をケーシング22bに熱伝導させて、潤滑油の温度が低下するようにした。【選択図】 図1


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    Title :

    DRIVE DEVICE FOR ELECTRIC AUTOMOBILE


    Additional title:

    電気自動車用駆動装置


    Contributors:
    HIRAI ISAO (author) / SUZUKI KENICHI (author)

    Publication date :

    2015-07-16


    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



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