| 摘要 |
PURPOSE: A multi-stage motor is provided to directly attach the motor to a mechanical equipment without any intermediate power transmission device so as to improve power transmission efficiency. CONSTITUTION: A multi-stage motor comprises a rotor(2) and a stator(3). In arrangement of induction coils of the rotor(2) and the stator(3), rotor induction coils(5) and stator induction coils(4) are arranged in multi-stage along the circumference of the motor to reduce width of a magnetic force inducing part that is directly related to the output of the motor. The induction coils of the multi-stage generate induction current to use summation of the magnetic force of each stage of the multi stage as the output of the whole motor. The multi stage structure maximizes power transmission efficiency without any power transmission device and use efficiently the circumference of the motor so that the speed of the motor can be adjusted.
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