Patent ID: 6713924
Filing Date: 2004-03-30
Classification: H02K

Abstract:
A brushless motor comprising:a rotor with a permanent magnet having P (P Is an integer not less than two), wherein two extension lines, which extend toward a shaft center of said rotor along both ends of each magnetic polarity of said rotor, form an angle with respect to the shaft center of said rotor; and a stator facing said rotor and having a plurality of coils, wherein any one of the coils has winding-bundles including isosceles sides interlinking with a magnetic field generated by the magnetic polarities, wherein two extension lines extending along centers of the winding-bundles of the isosceles sides of the coil cross each other at the shaft center of said rotor and form a vertex angle of 360/P degrees, and wherein the vertex angle formed by the two extension lines extending along centers of the winding bundles is equal to the angle formed by the two extension lines extending along both ends of the each magnetic polarity of said rotor.