Actuator for operating a drive mechanism run by an electric motor e.g. for throttle valve in motor vehicle, operates the drive by vibration via toothed wheel/step-down gearing with tooth segments shifted from first to second positions.

摘要

A drive pinion fits on a motor shaft (1) for a direct current motor and uses vibration to drive an annular gear section (4) by means of step-down gearing (2) with its last gearwheel concealed by another gearwheel (3). The annular gear section slides in its rotating direction (5) on a hub part (6) firmly linked to an end area on a butterfly valve shaft (11).