Synchronous motor with perforated flux guides on outer part of stator

摘要

The motor has pref. hollow cylindrical inner stator coil with two ends (6, 8) and a centre tap (7) wound around a ferromagnetic distance tube (12) between flux guidance cheeks (5, 10) of substantially identical form with straight edges and rounded ends. The external rotor (2) carries pref. adhesively bonded permanent magnets (3, 4) and is surrounded by an advantageously bifilar or centre-tapped second coil (26), with flux guidance cheeks having cutouts with internal dia. greater than the effective outer dia. of the rotor.