The invention relates to an electric steering-column worm and gear structure. The electric steering-column worm and gear structure comprises a first steering-column mandrel, a torsion bar, a worm, a worm gear, a second steering-column mandrel, an upper worm-gear casing, a lower worm-gear casing, a first bearing, a second bearing and a third bearing, wherein the second bearing is fixed on the second steering-column mandrel and is connected with the upper worm-gear casing; the third bearing is fixed on the second steering-column mandrel and is connected with the lower worm-gear casing. According to the invention, a lower worm-gear casing and a supporting plate, in the prior art, are formed into an integral structure, and wave springs are omitted; when the worm gear is stressed by the moment to the second steering-column mandrel, the upper worm-gear casing and the lower worm-gear casing together realize the effect of supporting, so that the wear caused by the second steering-column mandrel to the lower casing is reduced; therefore, abnormal noise of a wearing clearance is avoided.


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    Title :

    Electric steering-column worm and gear structure


    Contributors:
    YANG HUAXING (author) / TANG XUEDONG (author) / DING LING (author) / WANG PENG (author)

    Publication date :

    2015-12-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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