Induction motor

An induction motor which has a disk-shaped stator and rotor placed coaxially around a rotating shaft with their surfaces opposing each other across a predetermined gap and causes a rotating magnetic field generated from windings in the stator to induce current in windings of the rotor, turning the rotor, wherein:

• the stator includes a stator yoke and stator teeth, the stator yoke consists of a laminate made by laminating a plurality of blanked ring-shaped magnetic steel plates in the axial direction, holes for a predetermined number of slots are formed in the stator yoke at equal intervals in the circumferential direction, the stator teeth have first tooth bodies around which stator windings are wound and first tooth tips formed on those ends of the first tooth bodies which oppose the rotor, and the other ends of the first tooth bodies fit in the holes in the stator yoke;
• the rotor includes a rotor yoke and rotor teeth, the rotor yoke consists of a laminate made by laminating, in the axial direction, a plurality of blanked disk-shaped magnetic steel plates with a hole for insertion of a rotating shaft at the center, holes for a predetermined number of slots are formed in the rotor yoke at equal intervals in the circumferential direction, the rotor teeth have second tooth bodies which are inserted as rotor windings into a conductor plate and second tooth tips formed on that end of the second tooth bodies which oppose the stator, and the other end of the second tooth bodies fit in the holes in the rotor yoke;
• and
• the stator windings are fitted around the first tooth bodies between the stator yoke and first tooth tips, the rotor winding conductor plate is fitted around the second tooth bodies and sandwiched between the rotor yoke and second tooth tips, the stator has the outer edge of the stator yoke secured in a motor bracket, and the rotor is fastened to a rotating shaft held by bearings of the motor bracket.