To provide a novel electric drive unit and electric power steering system characteristic of upgraded mechanical and electrical reliability.SOLUTION: An electric drive unit includes: a motor housing-side annular groove 35 realized with an annular groove that is formed on an outer peripheral surface of an end surface 15 of a motor housing 11 and recedes inward in a radial direction orthogonal to an axial line of the motor housing 11; and a cover-side annular distal part 37 that is formed on an opening end of a cover 12 shielding an electronic control unit and is opposed to the annular groove of the motor housing-side annular groove 35 from outside. A gap between the motor housing-side annular groove 35 and the cover-side annular distal part 37 is filled with a liquid sealant. An annular slope 37IN that fans out while tilting toward outside in a radial direction of the cover 12 is formed in an inner peripheral surface of the cover-side annular distal part 37. A tip inner peripheral side of the annular slope 37IN is shaped like an arc 37C or has an inclined shape of tilting outside of the annular slope.SELECTED DRAWING: Figure 15

    【課題】機械的及び電気的な信頼性を高めた新規な電動駆動装置及び電動パワーステアリング装置を提供する。【解決手段】モータハウジング11の端面部15の外周面に形成され、モータハウジング11の軸線に直交する径方向の内側に後退する環状溝からなるモータハウジング側環状溝部35と、電子制御部を覆うカバー12の開口端に形成され、モータハウジング側環状溝部35の環状溝に外側から対向するカバー側環状先端部37とを備え、モータハウジング側環状溝部35とカバー側環状先端部37との間に液状シール剤が充填されていると共に、カバー側環状先端部37の内周面には、カバー12の径方向で外側に向けて傾斜して拡開する環状傾斜面37INが形成され、更に環状傾斜面37INの先端内周側が弧37Cの形状、或いは環状傾斜面より外側に傾斜した傾斜形状に形成されている、【選択図】図15


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    Title :

    ELECTRIC DRIVE UNIT AND ELECTRIC POWER STEERING SYSTEM


    Additional title:

    電動駆動装置及び電動パワーステアリング装置


    Contributors:

    Publication date :

    2020-06-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / B62D MOTOR VEHICLES , Motorfahrzeuge



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