To provide a vehicular driving device that can obtain effects of reducing loss of a ball bearing as much as possible while securing durability of the ball bearing.SOLUTION: A ball bearing on one rotary shaft, out of a first rotary shaft and a second rotary shaft, on which a rotation member corresponding to a larger value of a ratio out of values of ratios of a rotation speed of a first rotation member and a rotation speed of a second rotation member relative to a rotation speed of a third rotation member is arranged does not include an inner race, Thereby, a ball PCD can be reduced while securing durability of a ball bearing on the one rotary shaft, and dragging loss between balls of the ball bearing and the inner race can be reduced, Since the ball bearing integrally constituted with the rotary shaft is arranged on the one rotary shaft, reducing dragging loss of the ball bearing greatly reduces motive power loss on the third rotary shaft due to dragging loss of the ball bearing.This can obtain effects of reducing loss of the ball bearing as much as possible while securing durability of the ball bearing.SELECTED DRAWING: Figure 3

    【課題】玉軸受の耐久性を確保しつつ、玉軸受の損失低減の効果をできるだけ得ることができる車両用駆動装置を提供する。【解決手段】第1回転部材の回転速度及び第2回転部材の回転速度のうちの第3回転部材の回転速度に対する比の値が大きい方に対応する回転部材が配置された、第1回転軸及び第2回転軸のうちの一方の回転軸における玉軸受には、内レースが備えられていない。これにより、一方の回転軸における玉軸受の耐久性を確保しつつ、玉PCDを下げることができ、玉軸受の玉と内レースとの引き摺り損失を低減することができる。又、回転軸と一体的に構成された玉軸受が、一方の回転軸に配置されるので、玉軸受の引き摺り損失の低減によって、玉軸受の引き摺り損失による第3回転軸上における動力損失が比較的大きく低減される。よって、玉軸受の耐久性を確保しつつ、玉軸受の損失低減の効果をできるだけ得ることができる。【選択図】図3


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    Title :

    VEHICULAR DRIVING DEVICE


    Additional title:

    車両用駆動装置


    Contributors:

    Publication date :

    2024-09-27


    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 / F16C SHAFTS , Wellen



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