To provide a seal structure which can improve seal performance, and an electric power steering device.SOLUTION: A seal structure comprises a metal-made housing 6, a non-metal made cover 7 and an annular seal member 10. The cover 7 has an internal fitting part 72 which is internally fit to an opening part 642a of the housing 6. The seal member 10 is arranged in an annular space 18 between a housing inner face of the housing 6 and the internal fitting part 72. The housing inner face has seal face parts 642h, 642i to which the seal member 10 adheres over an entire periphery. When setting a seal face part whose creepage distance between an end face 642b on an opening side of the housing 6 and itself becomes the longest as the farthest seal face part 642j, the housing inner face has a recess 642g which is opened toward the annular space 18 at a position at which the creepage distance from the end face 642b becomes shorter than a creepage distance from the end face 642b up to the farthest seal face part 642j.SELECTED DRAWING: Figure 5

    【課題】シール性を向上させることができるシール構造及び電動パワーステアリング装置を提供する。【解決手段】シール構造は、金属製のハウジング6と非金属製のカバー7と環状のシール部材10とを備える。カバー7は、ハウジング6の開口部642aに内嵌される内嵌部72を有する。シール部材10は、ハウジング6のハウジング内面と内嵌部72との間の環状空間18に配されている。ハウジング内面は、シール部材10が全周にわたって密着したシール面部642h,642iを有する。ハウジング6の開口側の端面642bとの間の沿面距離が最も長くなるシール面部を最遠シール面部642jとしたとき、ハウジング内面は、端面642bから最遠シール面部642jまでの沿面距離よりも端面642bからの沿面距離が短くなる位置に、環状空間18に向かって開放された凹部642gを有する。【選択図】図5


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    Title :

    SEAL STRUCTURE AND ELECTRIC POWER STEERING DEVICE


    Additional title:

    シール構造及び電動パワーステアリング装置


    Contributors:

    Publication date :

    2022-01-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / F16J Kolben , PISTONS / F16C SHAFTS , Wellen



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