Electromagnetic actuator drive

An electromagnetic actuator drive for adjusting a final controlling element among at least three positions, comprising

• a soft magnetic armature (2) which is drive-coupled or drive-coupleable to the final controlling element and has a plurality of armature faces (5, 6),
• a plurality of soft magnetic pole elements (7), each having a plurality of pole faces (8, 9) on which the armature faces (5, 6) come to rest in two end positions of the armature (2),
• a restoring device (10) which drives the armature (2) by means of a restoring force into a starting position between the end positions,
• a holding device (11) with the help of which the armature (2) can be secured in its end positions by means of electromagnetic forces,
• wherein
• an even number of at least two pole elements (7) is provided,
• a separate electromagnetic coil (12) is assigned to each pole element (7),
• the hold device (11) applies electric current to the coils (12) for securing the armature (2) in its end positions so that the pole faces (8, 9) of neighboring pole elements (7) are oppositely polarized,
• the pole elements are arranged radially with regard to the axis of rotation;
• the coils each coaxially enclose the respective pole element;
• and
• the winding axis of the respective coil runs radially.