The invention discloses a diversion type hub bearing unit with a high-airtightness and low-torque sealing structure. The diversion type hub bearing unit mainly comprises a sealing ring framework, a sealing ring, a framework and the like, wherein a ring flange is sleeved with an outer ring through rolling friction of a steel ball; the sealing ring is arranged in a gap between the outer ring and thering flange for sealing; the sealing ring is fixed to an edge of the outer ring through the sealing ring framework; the framework is fixed to one side of the ring flange; a sealing lip A, a sealing lip B and a sealing lip C are arranged on the sealing ring, and are matched with the framework to realize sealing; and an inlet of the sealing ring is provided with a diversion lip which is matched with the framework to realize a guiding effect on splashed muddy water. Through the design of a diversion type sealing structure and the assembly type structural design of the sealing ring and the framework, the number of contact lips is reduced; the running torque of a hub bearing is reduced effectively; meanwhile the sealing performance of a product is improved greatly; and the reliability of sealtest is improved. No excessive sealing space needs to be added; the requirement of a main engine plant for high sealing performance can be met; and the requirement for low torque performance can alsobe met.

    本发明公开了一种导流型高密封低转矩密封结构的轮毂轴承单元,主要包括密封圈骨架、密封圈、骨架等,法兰盘外通过钢球的滚动摩擦套装外圈,外圈和法兰盘之间间隙处安装密封圈进行密封,密封圈通过密封圈骨架固定在外圈边缘处,骨架固定在法兰盘一侧,密封圈上设置有密封唇A、密封唇B、密封唇C与骨架配合实现密封,密封圈入口处设有导流唇与骨架配合实现对喷溅泥水的引导作用。本发明通过导流式密封结构设计以及密封圈与骨架的组件式结构设计,减少了接触唇的数量,有效降低轮毂轴承旋转力矩,同时大大提高产品的密封性能,增强密封试验的可靠性;不要求增加过多的密封空间,既能满足主机厂对高密封性能要求,又能满足低转矩性能要求。


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    Title :

    Diversion type hub bearing unit with high-airtightness and low-torque sealing structure


    Additional title:

    一种导流型高密封低转矩密封结构的轮毂轴承单元


    Contributors:
    ZHANG GAOFENG (author) / HUANG DEJIE (author) / ZHANG XIA (author)

    Publication date :

    2020-08-07


    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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