PROBLEM TO BE SOLVED: To provide a sealing device which has increased mud water resistance and thereby has improved sealing performance, and a vehicle bearing device with the same.SOLUTION: A sealing device 7 is provided that is constituted of a pack seal composed of: an annular seal plate 10 which includes a seal member 13 joined to a core metal 12; and a slinger 11 which includes a cylinder part 11a externally fit onto an inner ring 3 and an erecting plate part 11b extending to the radial-direction outside from the cylinder part 11a. The seal member 13 includes a side lip 13a which is formed while inclining to the radial-direction outside and is in slide-contact with the erecting plate part 11b. A cylindrical flange part 11c extending to the inside of a bearing from an external edge part of the erecting plate part 11b is formed, the flange part 11c is made to oppose the seal plate 10 via a radial-direction clearance, thereby a labyrinth seal 14 is formed. An auxiliary lip 13d inclining and extending to the radial-direction outside is formed at an outside diameter side of the side lip 13a, and a labyrinth seal 15 is formed which oppose the auxiliary lip 13d via an axial clearance δ between an end face of the flange part 11c and the auxiliary lip 13d.

    【課題】耐泥水性を高めて密封性能を向上させた密封装置およびこれを備えた車輪用軸受装置を提供する。【解決手段】芯金12に接合されたシール部材13を備えた環状のシール板10と、内輪3に外嵌される円筒部11aと、これから径方向外方に延びる立板部11bを備えたスリンガ11からなるパックシールで構成され、シール部材13が、径方向外方に傾斜して形成され、立板部11bに摺接するサイドリップ13aを備えた密封装置7において、立板部11bの外縁部から軸受内方側に延びる円筒状の鍔部11cが形成され、鍔部11cがシール板10と径方向すきまを介して対峙され、ラビリンスシール14が形成されると共に、サイドリップ13aの外径側に径方向外方に傾斜して延びる補助リップ13dが形成され、これと鍔部11cの端面との間に軸方向すきまδを介して対峙するラビリンスシール15が形成されている。【選択図】図2


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    Title :

    SEALING DEVICE AND VEHICLE BEARING DEVICE WITH THE SAME


    Additional title:

    密封装置およびこれを備えた車輪用軸受装置


    Contributors:

    Publication date :

    2015-08-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

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



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