Patent ID: 6871562
Filing Date: 2005-03-29
Classification: B62D,F16J,Y10T

Abstract:
1. A power steering system for a motor vehicle, comprising: a housing; a driven worm shaft arranged in the housing; a bead chain; a working plunger arranged in the housing coaxial to the worm shaft and arranged axially shiftably braced against the worm shaft via the bead chain, the working plunger arranged to have pressure applied thereto at both ends; a ring seal; and an annular gap extending between the worm shaft and the working plunger in a transition from pressure chambers separated by the working plunger to the ring seal guided in an annular groove and covering the annular gap; wherein the ring seal is arranged as a multi-part axial seal including two gap-covering support rings braced shiftably against groove flanks and axially spaced apart from each other and a sealing ring braced axially shiftably against a groove base and between the support rings, the support rings having a triangular cross-section, the sealing ring having the form of a wedge.