Patent ID: 6157107
Filing Date: 2000-12-05
Classification: H02K

Abstract:
A motor including:a magnet formed into a cylindrical shape and having at least its outer peripheral surface circumferentially divided into n sections, which are alternately magnetized to different poles;a first coil and a second coil provided in said magnet, said first coil and said second coil being disposed axially of said magnet;first outer magnetic poles excited by said first coil, said first outer magnetic poles being opposed to the outer peripheral surface of one end of said magnet;first inner magnetic poles excited by said first coil, said first inner magnetic poles being located between said first coil and said second coil, said first inner magnetic poles being opposed to an inner peripheral surface at one end side of said magnet;second outer magnetic poles excited by said second coil, said second outer magnetic poles being opposed to the outer peripheral surface of the other end of said magnet; andsecond inner magnetic poles excited by said second coil, said second inner magnetic poles being located between said first coil and said second coil, said second inner magnetic poles being opposed to an inner peripheral surface at another end side of said magnet.