Single drive actor for transmission unit of vehicle, arrangement and method for determination of reference position of selector finger, comprises use of stop element

摘要

The actuator (1) comprises an axially movable selector shaft (18) with a selector finger and an eccentric drive (28) moving the unit (18). A stop element in the shape of a raised spot (30) at the outer surface of the idler pulley (14) or a depression is arranged in order to resist the axial motion of the selector finger within the shift track in combination with a spring loaded detent (10,26). The position of the selector finger at the stop (30) causing a particular level of resistance to the finger can be taken as a reference point. ETAILED DESCRIPTION - INDEPENDENT CLAIM are given for an arrangement and a method for the determination of a reference position of the selector finger.