Device for converting an angular motion into a rectilinear motion

摘要

The device (1) has a cam (30) whose rotation by a primary rotating unit (10) moves a secondary unit (20), and an intermediary unit (40) spaced between the cam (30) and the unit (20). The unit (40) forms an interface between the cam (30) and unit (20) to cooperate with the cam by sliding contact and the unit (20), along the rotation of the cam. Independent claims are also included for the following: (a) a position detection device having a movement conversion device (b) a spark ignition engine valve control device having a movement conversion device.