To provide a vehicle drive unit capable of adjusting the balance of a flow rate of cooling oil to coil ends on both sides in a good manner.SOLUTION: The vehicle drive unit includes a rotor hub 42, which has a cylindrical portion 42B to which a rotor 20 of a motor is fixed. The cylindrical portion 42B has a plurality of circumferential holes 42Ba which are formed through and introduce lubricating oil. The circumferential holes 42Ba are formed at a position where a first distance d1 to one end of the rotor 20 in an axial direction is shorter than a second distance d2 to the other end of the rotor 20 in the axial direction. The rotor 20 has an axial oil path L1 which communicates with the circumferential hole 42Ba. A first axial oil path L1 has a narrowing portion with a cross-sectional area S1 which is smaller than a cross-sectional area of a second axial oil path, between the circumferential hole 42Ba and a first opening LO1.SELECTED DRAWING: Figure 3

    【課題】両側のコイルエンドに対する冷却油の流量のバランスを良好に調整することが可能な車両用駆動装置を提供する。【解決手段】車両用駆動装置は、モータのロータ20が固定される円筒部42Bを有するロータハブ42を備えており、円筒部42Bは、貫通形成されて潤滑油を導入する複数の周方向孔42Baを有している。周方向孔42Baは、ロータ20の軸方向の一方側の端部までの第1距離d1がロータ20の軸方向の他方側の端部までの第2距離d2よりも短くなる位置に形成されている。ロータ20は、周方向孔42Baに連通する軸方向油路L1を有しており、第1軸方向油路L1は、周方向孔42Baから第1開口部LO1までの間に第2軸方向油路の断面積よりも断面積が小さい断面積S1である絞り部を有する。【選択図】図3


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    Titel :

    VEHICLE DRIVE UNIT


    Weitere Titelangaben:

    車両用駆動装置


    Beteiligte:
    ITO NAOHIKO (Autor:in) / FURUTA YASUNARI (Autor:in)

    Erscheinungsdatum :

    2021-09-27


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / 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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