Overlay steering mechanism e.g. power assisted steering mechanism for e.g. passenger car, has shaft or servo motor effecting on overlay drive over freewheel so that motion of links is restricted, during power flow reversal

摘要

The mechanism has a drive input link (3) e.g. shaft or a servo motor, effecting on a overlay drive over a direction-switched coupler (8) e.g. freewheel, so that during a power flow reversal or an external operating position of the servo motor, a relative movement of another drive input link (2) and the drive output link is restricted. The drive input link (2) and the drive output link are movable together in a fixed gear transmission ratio.