SHAFT ROTATION TYPE SLENDER SMALL-SIZED MOTOR, AND OUTSIDE ROTATION TYPE SLENDER SMALL-SIZED MOTOR

摘要

PROBLEM TO BE SOLVED: To multiply the torque by arranging a plurality of units of field magnetic poles and rotors on the same axis. ;SOLUTION: For rotors 3 using permanent magnets, three pieces are pivoted on a rotary shaft 11, and for stators 10 being field magnetic poles, two pieces are fixed to the inwall of a casing 16, and such a hole as the rotary shaft 11 becomes free of rotation is provided at the center of this field magnetic pole 10. A permanent magnet 3 being a rotor and a field magnetic pole being the stator are arranged on the same axis. Rotors 3 consisting of permanent magnets pivoted on the rotary shaft are arranged on this rotary shaft 11 rotatable in the holes 17 at the centers of the cylinders of two pieces of field magnetic poles such that N poles and S poles are alternated at both ends and at the middle. In this way, a plurality of field magnetic poles 10 are arranged on the same axis, and the rotors 3 are put at both ends and the middle, and an armature 6 and a collector ring 7 are attached to the rotor at the end, thus the increase of torque and the saving of space are contrived. Moreover, the outside diameter of the motor becomes extremely small, and this can be applied to narrow space.;COPYRIGHT: (C)1998,JPO