ROTOR FOR HYBRID TYPE STEPPING MOTOR

PURPOSE:To increase the output torque of an apparatus by connecting three cylindrical magnets magnetized in the direction of a shaft center so that the end faces of the magnets coincide with each other on the axis of rotation, and by immovably providing rotor cores having many small teeth on the outer end faces at both ends of the magnets. CONSTITUTION:A rotor for a hybrid type stepping motor is composed or three cylindrical permanent magnets 3-5 centered on a rotating shaft 2 and connected with each other and four rotor cores 6 arranged so that the cores are brought into contact with respective end faces of the permanent magnets. The magnets 3-5 are magnetized in such manner that the polarities of adjoining end faces are identical with each other. Thus, magnetic fluxes flowing from respective magnets 3-5 flow separately to the stator 7 side without leaking to other magnet from the rotor core 5 so that the magnetic flux of each magnet 3-5 is converted into a torque effectively. Also, the magnet 4 provided in the central part of the rotor 1 is constituted by the use of a material causing a superconductive phenomenon.