Electrical driving device comprising more than one permanent-magnet-excited rotor and a shaver comprising said driving device

Abstract

An electrical driving device has three permanent-magnet-excited rotors 3 whose shafts 3S extend through intersections S between a circle 4 and 120.degree. spaced-apart radii 5 which diverge from the centre M of the circle. Each of the cylindrical rotors 3 is associated with three stator poles 7.1, 7.2, 7.3, which are spaced from the cylinder circumference by air gaps 6. Three of these stator poles 7.1 which are situated within the circle 4 are connected by means of yoke irons J.sub.1. The stator poles 7.2 and 7.3 situated outside the circle 4 are connected in pairs via yoke bridges J.sub.2. These yoke bridges J.sub.2 are, in their turn, connected to yoke irons J.sub.3, which carry excitation coils 10. At their ends which are remote from the yoke bridges J.sub.2 all the yoke irons J.sub.3 are magnetically connected via a return yoke J.sub.4. The yoke iron J.sub.1, the stator poles 7.1, 7.2 and 7.3, the Yoke bridges J.sub.2 interconnecting them, the yoke iron J.sub.3 and the return yoke J.sub.4 consist of solid iron or electric sheet.

Dependencies are inferred from the claim text.