Synchronous micromotor with permanent magnet rotor - includes cylindrical stator with elongated axially extending portions

摘要

The synchronous micrometer has a rotor with a permanent magnet structure which is surrounded by a cylindrical stator component of soft magnetic material. The latter is formed with elongated axially extending cutouts which except for their opposed ends are of elliptical configuration. Thus the elongated axially extending wall portions of the cylindrical stator component are of a hourglass configuration. To one end of this cylindrical stator component is fixed a transverse wall which engages a transverse wall of a casing which houses a coil structure. The latter coaxially surrounds the cylindrical stator component as well as the permanent magnet rotor.