PROBLEM TO BE SOLVED: To improve the cost reduction and durability of an in-wheel motor drive unit.SOLUTION: An in-wheel motor drive unit 21 comprises a casing 22 for holding a motor part A, a speed reduction part B and a wheel bearing part C, the speed reduction part B has a reduction gear input shaft 25 connected to a motor rotating shaft 24, and a reduction gear output shaft 28 which transmits the rotation of the decelerated reduction gear input shaft 25 to the wheel bearing part C, and the reduction gear input shaft 25 is rotatably supported by rolling bearings 37a, 37b. The reduction gear input shaft 25 is formed of case hardening steel, and has a hard layer H which is formed by being applied with carburization quenching and tempering as heat treatment.

    【課題】インホイールモータ駆動装置の低コスト化および耐久性向上を図る。【解決手段】モータ部A、減速部Bおよび車輪用軸受部Cを保持するケーシング22を備え、減速部Bが、モータ回転軸24に連結された減速機入力軸25と、減速された減速機入力軸25の回転を車輪用軸受部Cに伝達する減速機出力軸28とを有し、減速機入力軸25が転がり軸受37a,37bにより回転自在に支持されたインホイールモータ駆動装置21において、減速機入力軸25が肌焼き鋼で形成され、熱処理として浸炭焼入れ焼戻しが施されることにより形成された硬化層Hを有する。【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 :

    2015-09-28


    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



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