Electromagnetic actuating device

An electromagnetic camshaft adjusting device, comprising:

• an armature unit adapted to be driven along or parallel to an axial direction in response to energizing a stationary, axially aligned coil unit, the armature unit interacts with a slide and/or plunger unit extending in the axial direction, wherein the plunger unit causes a camshaft adjustment in an internal combustion engine;
• permanent magnetic means on and/or in the armature unit, and adapted to energize the coil unit to drive the armature unit via the effect of magnetic repulsion, wherein the coil unit and armature unit are at least partially accommodated in a housing or carrier unit;
• the carrier unit has allocated to it stationary magnetic field detecting means adapted for contactless magnetic interaction with the permanent magnetic means and configured in such a way that an axial position of the armature unit and/or the slide or plunger unit is electronically ascertained in an energized and non-energized state of the coil unit by evaluating a magnetic field detection signal of the magnetic field detecting means;
• and
• the coil unit has allocated to it magnetic flux-directing means in such a way that it dissipates a magnetic coil field generated by the coil unit away from the magnetic field detecting means, and wherein the magnetic field detecting means comprises a magnetic field sensor at least partially enveloped by a polymeric extruded or encapsulated mold formed in the housing or carrier unit.