PROBLEM TO BE SOLVED: To provide a wheel drive unit which can supply a lubricant even at a start of startup from a stop of a vehicle.SOLUTION: A wheel drive unit comprises: a motor part A having a motor rotating shaft 24a; a reduction gear B which decelerates the rotation of the motor rotating shaft 24a, and outputs it; a casing 22 for accommodating the motor part A and the reduction gear B; an oil tank arranged below the casing 22; and an oil pump 42 which sucks a lubricant from the oil tank, supplies the lubricant to the motor part A and the reduction gear B, and performs the lubrication and cooling of the motor part A and the reduction gear B. The wheel drive unit drives wheels by an output of the reduction gear, and comprises a casing oil passage extending to a rear part along the inside of the casing of the motor part A from a discharge port of the oil pump 42, and an internal passage 44 which is connected to the casing oil passage, and arranged at the motor rotating shaft 24a. An inlet side of the casing oil passage connected to the discharge port of the oil pump is arranged while being directed downward from a horizontal plane, and an outlet side connected to the internal oil passage 44 of the casing oil passage is directed upward from the horizontal plane.SELECTED DRAWING: Figure 3

    【課題】 停車から始動開始の時にも潤滑油を供給することができる車輪駆動装置を提供する。【解決手段】 モータ回転軸24aを有するモータ部Aと、モータ回転軸24aの回転を減速して出力する減速機Bと、モータ部Aと減速機Bを収容するケーシング22と、ケーシング22の下方に設けたオイルタンクと、オイルタンクから潤滑油を吸引し、潤滑油をモータ部Aと減速機Bに供給してモータ部Aと減速機Bの潤滑と冷却を行うオイルポンプ42と、を有し、減速機の出力により車輪を駆動する車輪駆動装置であって、オイルポンプ42の吐出口からモータ部Aのケーシングの内側に沿って後方へ延びるケーシング油路と、ケーシング油路に繋がるモータ回転軸24aに設けられた内部通路44とを備え、オイルポンプの吐出口と繋がるケーシング油路の入口側が水平より下に向いて設けられ、ケーシング油路の内部通路44に繋がる出口側が水平より上に向いて設けられている。【選択図】 図3


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    Title :

    WHEEL DRIVE UNIT


    Additional title:

    車輪駆動装置


    Contributors:

    Publication date :

    2016-08-18


    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 / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES



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