To provide a novel electric drive device and electric power steering device that can suppress internal pressure fluctuation of a storage space of an electronic control unit EC and intrusion of moisture into a storage space of the electronic control unit EC for a long time.SOLUTION: On the opposite side of an output portion of a rotating shaft 23 of an electric motor, on an end wall 15 of a motor housing 11 that separates a storage space Sh of an electronic control unit EC and a storage space Sm of the electric motor, a ventilation hole 42 communicating with the storage space Sh of the electronic control unit EC and the storage space Sm of the electric motor is formed, and a waterproof ventilation portion 43 that suppresses the passage of moisture but allows the passage of air and water vapor is provided in the ventilation hole 42. The ventilation portion with a waterproof ventilation portion is provided on the end wall of the motor housing, such that the effects of stepping stones and muddy water in the external environment can be eliminated, and the internal pressure fluctuation of the storage space of the electronic control unit EC and intrusion of moisture into the storage space can be suppressed for a long time.SELECTED DRAWING: Figure 10

    【課題】長期に亘って電子制御部ECの収納空間の内圧変動、及び電子制御部ECの収納空間への水分の侵入を抑制することができる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ことにある。【解決手段】電動モータの回転軸23の出力部とは反対側で、電子制御部ECの収納空間Shと電動モータの収納空間Smとを隔離するモータハウジング11の端面壁15に、電子制御部ECの収納空間Shと電動モータの収納空間Smを連通する通気孔42を形成し、この通気孔42に水分の通過を抑制するが空気や水蒸気の通過を許す防水通気部43を設けた。モータハウジングの端面壁に防水通気部を有した通気孔を設けたので、外部環境での飛び石や泥水の影響を排除することができ、長期に亘って電子制御部ECの収納空間の内圧変動、及び収納空間への水分の侵入を抑制することができる。【選択図】図10


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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 :

    2019-12-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / B62D MOTOR VEHICLES , Motorfahrzeuge / H05K PRINTED CIRCUITS , Gedruckte Schaltungen



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