PROBLEM TO BE SOLVED: To prevent the damage of a parallel-axis gear reduction gear caused by insufficient lubrication even at a restart of an electric motor.SOLUTION: An in-wheel motor drive unit 21 comprises a motor part A, a reduction gear part B constituted of a parallel-axis gear reduction gear 39 which is composed of a plurality of gears 30 to 33, and a wheel bearing part C. The in-wheel motor drive unit lubricates the gear 30 to 33 by a splash by the rotation of the gears 30 to 33 of the parallel-axis gear reduction gear 39 in a non-pump oil bath state. The parallel-axis gear reduction gear 39 comprises the first gear 30 which is coaxially connected to a shaft end of a motor rotating shaft 25 of the motor part A, and an oil sump 56 which stores a lubricant by the splash by the rotation of a plurality of the gears 30 to 33, and after that, drips the lubricant to the first gear 30 is arranged above the first gear 30.SELECTED DRAWING: Figure 1

    【課題】 電動モータの再始動時であっても、潤滑不足による平行軸歯車減速機の損傷を未然に防止する。【解決手段】 モータ部Aと、複数の歯車30〜33からなる平行軸歯車減速機39で構成された減速機部Bと、車輪用軸受部Cとを備え、ポンプなしの油浴状態で平行軸歯車減速機39の歯車30〜33の回転による跳ね掛けでもって各歯車30〜33を潤滑するインホイールモータ駆動装置21であって、平行軸歯車減速機39は、モータ部Aのモータ回転軸25の軸端に同軸的に連結された第1歯車30を備え、複数の歯車30〜33の回転による跳ね掛けでもって潤滑油を貯溜した後にその潤滑油を第1歯車30に滴下する油溜まり部56を、第1歯車30の上方に配設する。【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 :

    2017-01-05


    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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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