| 摘要 |
PURPOSE:To obtain escape torque by which a field magnet is not restricted at the position of a dead point by providing a reluctance torque generating means for self-start by a magnetic substance, a magnetic projection, etc., for obtaining dead point escape torque at the arrangement angle position within the specified range from the position of the dead point being the current changeover point of an armature coil. CONSTITUTION:A stator electron 22 is arranged and fixed on a post 20 by screwing a screw into the screw hole 28 at the apex of the pole 20 through a through hole 25 made in a circular stator yoke 221 and a through hole 27 made in circular printed board 26, and a single-phase coreless stator armature 22 is provided in the magnetic field of a field magnet 24. Hereby, a reluctance torque generating means magnetic substance for automatic start for obtaining the dead point escape torque in the position of arrangement angle theta of 0<theta<pi/2 (pi is an electric angle of 180 deg.) from the positions of the dead points being the current application changeover points of armature coils 9-1 and 9-2 is made, and escape torque by which the field magnet 24 is not restricted in the position of dead point can be gotten. |
