Patent ID: 8193671
Filing Date: 2012-06-05
Classification: H02K

Abstract:
1. An electric motor comprising: a stator plate having a plurality of permanent magnet pieces on a first surface thereof to form a first disk and a same number of permanent magnet pieces on a second surface thereof to form a second disk; the first disk and the second disk being constructed in such a manner that two magnet pieces adjacent with each other are aligned to have opposite magnetic poles; the first disk and the second disk facing with each other in such a manner that two corresponding magnet pieces are faced with each other to have opposite magnetic poles; a first ring core having a first switching winding disposed and fixed on a side of the first disk; the first switching winding being dividedly wound around the first ring core to form a plurality of winding sections and a same number of gap sections; a second ring core having a second switching winding disposed and fixed on a side of the second disk; the second switching winding being dividedly wound around the second ring core to form a plurality of winding sections and a same number of gap sections; the numbers of the winding sections and the gap sections being the same as the number of the permanent magnet pieces on the first disk or the second disk; a first rotor plate having the same number of permanent magnet pieces as that of the first disk on one surface thereof to form a third disk in such a manner that two magnet pieces adjacent with each other are aligned to have opposite magnetic poles and rotatably facing relative to the first switching winding; a second rotor plate having the same number of permanent magnet pieces as that of the first rotor plate on one surface thereof to form a fourth disk in such a manner that two magnet pieces adjacent with each other are aligned to have opposite magnetic poles and rotatably facing relative to the second switching winding; the first rotor plate and the second rotor plate being securely coupled by a driving shaft; the third disk and the fourth disk facing with each other in such a manner that two corresponding magnet pieces are faced with each other to have same magnetic poles; a first power supply means for intermittently supplying current through a first switch to the first switching winding; and a second power supply means for intermittently supplying current through a second switch to the second switching winding, wherein the first power supply means supplies current to the first switching winding and the second power supply means stops current to the second switching winding when the third disk rotatably faces relative to the first disk in such a manner that two corresponding magnet pieces are faced with each other to have same magnetic poles, and wherein the second power supply means supplies current to the second switching winding and the first power supply means stops current to the first switching winding when the fourth disk rotatably faces relative to the second disk in such a manner that two corresponding magnet pieces are faced with each other to have same magnetic poles, thereby controlling rotation of the first rotor plate and the second rotor plate.