PROBLEM TO BE SOLVED: To achieve a structure capable of sufficiently securing sealing performance by a cap.SOLUTION: A cap 19a is constituted by a bottomed cylinder-shape cap body 20a, and a fitting core metal 44 fixed to an inner diameter side of a cap cylinder portion 22a of the cap body 20a. A bottomed cylinder-shape sensor retaining cylinder 46 formed to be opened only on an axial inner side is provided on a cap bottom portion 23a of the cap body 20a. A core metal through hole 55 is formed at a position facing an encoder 13 in an axial direction of a core metal bottom portion 54 of the fitting core metal 44. The sensor retaining cylinder 46 is inserted in a state that an intermediate portion thereof is arranged in the inner side of the core metal through hole 55. An axial outer end surface of the sensor retaining cylinder 46 is adjacently opposed to the encoder 13a in a state that an outer peripheral surface of a core metal cylinder portion 47 of the fitting core metal 44 is internally fitted and fixed directly to an axial inner end inner peripheral surface of an outer ring 2.

    【課題】キャップによる密封性を十分に確保できる構造を実現する。【解決手段】キャップ19aを、有底円筒状のキャップ本体20aと、キャップ本体20aのキャップ円筒部22aの内径側に固定した嵌合芯金44とにより構成する。キャップ本体20aのキャップ底部23aに、軸方向内方のみが開口した状態で形成した、有底円筒状のセンサ保持筒46を設ける。嵌合芯金44の芯金底部54のうちの、軸方向に関してエンコーダ13aと対向する位置に芯金貫通孔55を形成する。センサ保持筒46を、その中間部を芯金貫通孔55の内側に配置した状態で挿通する。そして、嵌合芯金44の芯金円筒部47の外周面を、外輪2の軸方向内端部内周面に直接内嵌固定した状態で、センサ保持筒46の軸方向外端面を、エンコーダ13aに近接対向させる。【選択図】図2


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    Titel :

    ROLLING BEARING UNIT WITH ROTATIONAL SPEED DETECTOR


    Weitere Titelangaben:

    回転速度検出装置付転がり軸受ユニット


    Beteiligte:

    Erscheinungsdatum :

    2015-10-01


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

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



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