To provide a method in which a rotating force input into a small rotating body is made to be further transmitted to a large rotating body after the large rotating body is also rotated one time without contact with each other, and then, both are always rotated at the same angle and speed when the small rotating body is made to be rotated one time.

A rotor A34 fixed to a rotary shaft 9, and a rotor B35 fixed to a bearing B13 and a rotor C36 fixed to a bearing C14 are mounted on the same rotary shaft. Each motor is rotated at the same angle and speed as an independent rotating body and without connection to each other. The each motor is mounted so that the respective holders A1, B3, C6 housing magnets therein repel each other, respectively. When one of the rotary shaft 9 fixing the rotor 34 is connected to a power source as an input shaft 10 and rotated, distances between the respective rotors are strongly held by a magnetic repulsive force, and almost the same number of rotations made by the rotating force of the input shaft 10 is conducted to the rotor C36.