The invention discloses a labyrinth type hub bearing unit sealing structure, and relates to the field of hub bearings. The labyrinth type hub bearing unit sealing structure comprises an inner framework and an outer framework, the inner framework is tightly attached to the inner diameter of an outer ring, the periphery of the inner framework is coated with inner rubber, the inner framework and theinner rubber are glued and adhere into a whole, and at most two contact type lips are arranged on the inner rubber and used for being matched with the outer framework; the head of the outer frameworkis coated with outer rubber, the outer framework and the outer rubber are glued into a whole, the side, away from the outer ring, of the outer rubber is tightly attached to the upper end face of a flange, the side, not coated with the outer rubber, of the outer framework is tightly attached to the lower end face of the flange, and the tail of the outer framework is tightly attached to the outer diameter face of the flange; and a plurality of lips are arranged on the side, close to the outer ring, of the outer rubber and used for being matched with the outer ring. The labyrinth type hub bearingunit sealing structure has high sealing performance, and can resist invasion of external muddy water under various working conditions; the anti-leakage capability on lubricating grease in a bearing is high; and a two-lip contact structure is adopted, so that the friction level of the bearing is greatly reduced.

    本发明公开了一种迷宫式轮毂轴承单元密封结构,涉及轮毂轴承领域,包括内骨架和外骨架,所述内骨架紧贴在外圈内径上,该内骨架外周包覆有内橡胶,二者胶接粘附为一体,内橡胶上设有至多两个接触式唇口用于配合外骨架;所述外骨架头部包覆有外橡胶,二者胶接粘附为一体,外橡胶远离外圈的一侧与法兰上端面紧贴,外骨架上未被外橡胶包覆的侧边与法兰下端面紧贴,外骨架尾部与法兰外径面紧贴;所述外橡胶上靠近外圈的一侧设有若干道唇口用于配合外圈。本发明具有高密封性能,满足各种工况下对外界泥水的侵入抵御;对轴承内部润滑油脂的抗泄漏能力强;采用两唇接触式结构,大幅降低轴承摩擦水平。


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    Title :

    Labyrinth type hub bearing unit sealing structure


    Additional title:

    一种迷宫式轮毂轴承单元密封结构


    Contributors:
    HUANG DEJIE (author) / ZHOU XU (author) / WANG FENG (author)

    Publication date :

    2021-01-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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