Drive arrangement e.g. for valve, has permanent magnet arrangement with magnetizing direction transverse to direction of motion of drive part and field acting on magnetisable part

摘要

The drive arrangement has a reciprocally movable drive part (13) with a magnetisable part (14) in a chamber (9), first and second permanent magnet arrangements (6,7) enclosing the chamber and a coil arrangement (11) for displacing the drive part. The magnetizing direction of the permanent magnet arrangement runs transversely with respect to the direction of motion (12) of the drive part and the permanent magnetic field emanating from it acts on the magnetisable part of the drive part.