Adjustment arrangement and valve control device comprising an adjustment arrangement

Adjustment arrangement, comprising

• a) a rotating input element at which a first torque from a motor arrangement can be inputted into the adjustment arrangement,
• b) a rotating output element at which a second torque can be outputted by the adjustment arrangement,
• c) a transmission portion for converting the first torque into the second torque,
• wherein the transmission portion comprises a transmission means having a first threaded portion and a second threaded portion, and
• d) a housing receiving therein the input element, the motor arrangement, and the transmission means,
• wherein the first threaded portion converts a rotation of the input element into an axial movement of the transmission means, and the second threaded portion converts an axial movement of the transmission means into a rotation of the output element,
• wherein the first threaded portion and the second threaded portion have different thread pitches from one another,
• wherein the transmission means is operably connected to the output element (1) in an axially displaceable manner so that axial movement of the transmission means is not transferred into axial movement of the output element and (2) in a rotationally engaged manner so that rotational movement of transmission means is transferred into rotational movement of the output element,
• wherein the first threaded portion is in threaded engagement with an external thread formed along an axial length of the input element,
• wherein the second threaded portion is in threaded engagement with a threaded element which is rotationally and axially fixed to the housing of the adjustment arrangement during normal operation.