Patent ID: 7528521
Filing Date: 2009-05-05
Classification: A61G,B60L,H02K,Y02T

Abstract:
1. A rotary electric machine comprising: a stator including a plurality of teeth which are wound up by coils and a stator yoke core connecting the respective teeth; and a rotor provided with magnets disposed so as to oppose to the teeth, respectively, with a space therebetween, wherein each of the teeth is formed into T shape by laminating a plurality of magnetic steel plates and has a head portion and a leg portion, the head portion being a wider portion of the T-shape which is opposed to the magnet, the leg portion including a coil wind-up portion around which a coil is wound up and which has a substantially constant width and an insert portion which is inserted into the stator yoke core, and the coil wind-up portion is formed with a plurality of fitting portions for fitting and fixing the laminated magnetic steel plates together, the fitting portions being arranged so as to align with a center line of the coil wind-up portion; wherein the magnetic steel plates have an insulating film formed on both side surfaces thereof other than the fitting portions so that a closed circuit is formed between the magnetic steel plates through the fitting portions.