To provide an electric drive device and electric power steering device capable of assembling a cover at an exact position in an end face wall of a motor housing and facilitating visual verification of assembly of an O-ring.SOLUTION: The present invention comprises an O-ring 22 disposed between an annular groove 18 retreating from an end face wall 14 of a motor housing along an axial line of the motor housing 11 and a cover-side annular front end part 20 stored in the annular groove 18 and further includes: a positioning groove part 23 extending to part of a motor housing side annular groove part 19 in the peripheral direction toward outward in the radial direction; a positioning front end part 24 extending to part of the cover-side annular front end part 20 in the peripheral direction toward outward in the radial direction and stored in the positioning groove part; and a gap G with a predetermined width enough to make a protrusion part 22P of the O-ring 22 visible, which is formed between the positioning groove part 23 and the positioning front end part 24 with the positioning front end part 24 stored in the positioning groove part 23.SELECTED DRAWING: Figure 5

    【課題】モータハウジングの端面壁にカバーを正確な位置に組み付けることができ、しかもOリングの組み付けを容易に目視して確認することができる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】モータハウジングの端面壁14からモータハウジング11の軸線にそって後退する円環状溝18と、円環状溝18に収納されるカバー側円環状先端部20との間に配置されたOリング22とを備え、モータハウジング側円環状溝部19の周方向の一部に径方向外側に向けて延びる位置決め用溝部23が形成され、カバー側円環状先端部20の周方向の一部に径方向外側に向けて延び、位置決め用溝部に収納される位置決め用先端部24が形成されていると共に、位置決め用溝部23に位置決め用先端部24が収納された状態で、位置決め用溝部23に位置決め用先端部24の間にはOリング22の突出部22Pが目視できる所定幅の隙間Gが形成されている。【選択図】図5


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    Title :

    ELECTRIC DRIVE DEVICE AND ELECTRIC POWER STEERING DEVICE


    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 :

    2019-12-12


    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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