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.
Electric steering-column worm and gear structure
2015-12-16
Patent
Electronic Resource
English
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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