PROBLEM TO BE SOLVED: To provide a wheel bearing device with rotation speed detection device which easily discharges a foreign substance to the outside even if the foreign substance is intruded into a cover, prevents the foreign substance from being immersed into a bearing, prevents a flaw or abrasion from being generated by meshing the foreign substance into a detection part, and improves reliability.SOLUTION: A cover 13 comprises: a cylindrical fitting part 13a which is externally fitted to an end portion of an external member 5; a flange part 13b which extends radially insides from the fitting part 13a and is adhered to an end face of the external member 5; and a bottom part 13d which extends radially insides from the flange part 13b and includes a circular hole 17 to which a shoulder part 16 of an outside joint member 15 is fitted. A pair of drains 22 are formed in a direction of the bottom part 13d vertical to a road surface, and an inner diameter of the circular hole 17 is set to a larger diameter than a fitting surface of an inner wheel 2 and a magnetic encoder 25. Thus, even if a foreign substance intruded into the cover 13 and is stagnated, slurry or the like can be prevented from being immersed into the bearing.SELECTED DRAWING: Figure 2

    【課題】カバー内に異物が侵入しても容易に外部に排出し易くし、軸受内部に侵入するのを防止すると共に、検出部に異物が噛み込んで傷や摩耗が発生しないようにし、信頼性を向上させた回転速度検出装置付き車輪用軸受装置を提供する。【解決手段】カバー13が、外方部材5の端部に外嵌される円筒状の嵌合部13aと、この嵌合部13aから径方向内方に延び、外方部材5の端面に密着される鍔部13bと、この鍔部13bから径方向内方に延び、外側継手部材15の肩部16が嵌挿される円孔17を有する底部13dと、を備えると共に、この底部13dの路面垂直方向に一対のドレーン22が形成され、円孔17の内径が内輪2と磁気エンコーダ25との嵌合面よりも大径に設定されているので、カバー13内に異物が侵入して滞留しても泥水等が軸受内部に浸入するのを防止することができる。【選択図】図2


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    Titel :

    WHEEL BEARING DEVICE WITH ROTATION SPEED DETECTION DEVICE


    Weitere Titelangaben:

    回転速度検出装置付き車輪用軸受装置


    Beteiligte:
    NAKA DAISUKE (Autor:in)

    Erscheinungsdatum :

    2017-02-02


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    F16C SHAFTS , Wellen / B60B VEHICLE WHEELS , Räder für Fahrzeuge / F16J Kolben , PISTONS