VORRICHTUNG ZUM ANSTEUERN EINER HYDRAULISCHEN SERVOLENKUNG

摘要

PCT No. PCT/EP91/01039 Sec. 371 Date Sep. 14, 1992 Sec. 102(e) Date Sep. 14, 1992 PCT Filed Jun. 6, 1991 PCT Pub. No. WO92/08637 PCT Pub. Date May 29, 1992.Apparatus for actuating a hydraulic power steering system for automotive vehicles, wherein the steering shaft (1 ) is allowed to roll off on the gear rack (3) to a small degree to actuate the steering valve. To enable this rolling motion, the steering shaft (1 ) is supported in a sleeve (9) which, in turn, is supported through needle bearings (10) so as to be rotatable in relation to the steering gear housing (4). To prevent inadvertent steering maneuvers in the event of partial or complete system failure, the needle bearing axis is arranged in parallel to the center line of the steering shaft (1) as well as in one plane with the steering shaft and with the point of force transmission between pinion (2) and gear rack (3). The needle bearing axis is radially outward from the central point of the steering shaft axis than the point of force transmission. A captivated spring (24) is provided to retain the valve slide (19) in its neutral position.