초록 ▼

A motor includes a rotor including a permanent magnet circumferentially equally divided and alternately magnetized to different poles into a cylindrical shape. A first coil and a second coil are displayed inside and axially of the rotor. First outer magnetic poles and first inner magnetic poles are

A motor includes a rotor including a permanent magnet circumferentially equally divided and alternately magnetized to different poles into a cylindrical shape. A first coil and a second coil are displayed inside and axially of the rotor. First outer magnetic poles and first inner magnetic poles are excited by the first coil and are opposed to the outer peripheral surface and inner peripheral surface of the rotor, respectively. Second outer magnetic poles and second inner magnetic poles excited by the second coil are opposed to the outer peripheral surface and inner peripheral surface of the rotor, respectively. The first inner magnetic poles and the second inner magnetic poles are located between the first coil and the second coil, to thereby make the opposed area of the outer magnetic poles, the inner magnetic poles and the magnet large and provide a super-compact motor of a high output and high efficiency.

대표청구항 ▼

[ What is claimed is:] [1.] 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 co

[ What is claimed is:] [1.] 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.