To provide a technique that can reduce lubricant leakage risk.SOLUTION: A wheel drive device comprises: a speed reduction mechanism which reduces rotation transmitted from a driving source; a rotary member 16 to which rotation reduced by the speed reduction mechanism is transmitted, and which rotates together with a wheel; stationery members 18A, 18B for rotatably supporting the rotary member 16; and a first oil seal 76 which encapsulates a space for storing the speed reduction mechanism. When the member, which is located on an outer side in a radial direction, of the rotary member 16 and the stationery members 18A, 18B is so made as to be an outer member 50, and the member, which is located on an inner side in the radial direction, is so made as to be inner members 52A, 52B, the outer member 50 includes extension parts 70A, 70B which extend inward in the radial direction beyond outermost diameter parts 58A, 58B of the inner members 52A, 52B, and the first oil seal 76 is located between inner peripheral surfaces of the extension parts 70A, 70B and the inner members 52A, 52B.SELECTED DRAWING: Figure 2

    【課題】潤滑剤の漏れリスクを低減できる技術を提供することにある。【解決手段】駆動源から伝達される回転を減速する減速機構と、減速機構によって減速された回転が伝達され、車輪ととともに回転する回転部材16と、回転部材16を回転自在に支持する固定部材18A、18Bと、減速機構を収納する空間を封止する第1オイルシール76と、を備える車輪駆動装置であって、回転部材16と固定部材18A、18Bのうち、径方向外側に配置される部材を外側部材50とし、径方向内側に配置される部材を内側部材52A、52Bとしたとき、外側部材50は、内側部材52A、52Bの最外径部58A、58Bを超えて径方向内側に延在する延在部70A、70Bを備え、第1オイルシール76は、延在部70A、70Bの内周面と内側部材52A、52Bとの間に配置される。【選択図】図2


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    Title :

    WHEEL DRIVE DEVICE


    Additional title:

    車輪駆動装置


    Contributors:

    Publication date :

    2021-09-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60B VEHICLE WHEELS , Räder für Fahrzeuge / F16H Getriebe , GEARING



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