PROBLEM TO BE SOLVED: To extend a cruising distance, and to improve a rated output by improving the cooling performance of an in-wheel motor drive unit by a lubricant.SOLUTION: An in-wheel motor drive unit 21 comprises: a motor part A which generates a drive force; a reduction gear B which decelerates the rotation of the motor part, and outputs it; and a wheel hub C which transmits the output from the reduction gear B to a drive wheel. The motor part A and the reduction gear B are accommodated in a casing 21, an oil feed passage 43 in which a lubricant circulates by an oil pump 42 is formed in the casing 21, the lubricant circulating in the oil feed passage 43 is guided to the motor part A and the reduction gear B, and the lubrication and cooling of the motor part A and the reduction gear B are performed. A groove or a protrusion is formed in the oil feed passage 43, a flow passage internal surface area of the oil feed passage 43 is increased, and the cooling efficiency of the lubricant from the oil feed passage is enhanced.SELECTED DRAWING: Figure 1

    【課題】 潤滑油によるインホイールモータ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】 駆動力を発生させるモータ部Aと、モータ部の回転を減速して出力する減速機Bと、減速機Bからの出力を駆動輪に伝える車輪ハブCとを備え、前記モータ部Aおよび減速機Bがケーシング21内に収容され、このケーシング21に、オイルポンプ42によって潤滑油が循環する給油通路43を設け、この給油通路43を循環する潤滑油をモータ部Aと減速機Bに導いて、モータ部Aと減速機Bの潤滑と冷却を行うインホイールモータ駆動装置21において、前記給油通路43内に、溝又は突起を設けて給油通路43の流路内表面積を増加させ、給油通路からの潤滑油の冷却効果を高めるようにした。【選択図】 図1


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    Title :

    IN-WHEEL MOTOR DRIVE UNIT


    Additional title:

    インホイールモータ駆動装置


    Contributors:

    Publication date :

    2016-02-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F16H Getriebe , GEARING



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