PERMANENT MAGNET FOR CORELESS MOTOR

PURPOSE:To enabl efficient and great torque to be obtained even if a device is miniaturized, by setting the magnetized direction so that the direction of magnetic flux on a surface orthogonal to an axial direction may be a almost radially formed. CONSTITUTION:Outside a cylindrical internal yoke 2 set integrally on the central section of a cylindrical external yoke l with a bottom, a cylindrical permanent magnet 3 is set to organize a stator 4. A rotor 5 is organized by setting a coil 8 with one end supported firmly by a supporting member 7 on a rotary shaft 6 inserted through the central penetrating slot of the cylindrical internal yoke 2, rotatably. The magnetized direction of the cylindrical permanent magnet 3 is set so that thedirection of magnetic flux on a surface orthogonal to the axial direction may be almost radially formed.