Motor vehicle power steering has electrical servo motor and planetary roller gear spindle drive with rack, spindle nut, rollers or roller bodies with corrugated profile fitting rack thread

摘要

The power steering has a steering wheel operated by the driver, a steering gearbox that pivots the steerable vehicle wheels by displacing a movable component and an electrical servo motor connected to the component via a transmission to provide drive. The transmission is a planetary roller threaded spindle gear consisting of a rack (3), a spindle nut (19) and a number of intervening rollers or roller bodies (21) with a corrugated profile fitting the rack's thread.