PURPOSE: To obtain a stable rotary force by a high torque in a microscopic size by providing a hollow shaft rotatably supported in a casing, aligning a plurality of motors on the outer periphery of the shaft, and rotating the shaft by the drive forces of the motors.
CONSTITUTION: A hollow shaft 1 is arranged in a cylindrical casing 2, and rotatably supported to the casing 2 through a ball bearing 3. A pair of rotors 4 are supported by a rotor retainer 5 provided on the outer periphery of the shaft 1, and pressed to a stator 7 through a lining material 8 by a suitable force by a belleville spring 6. The rotation of the rotor 4 is transmitted to the shaft l by a spline mechanism through the retainer 5, and the shaft l is rotated through the bearing 3 in the casing 2. Thus, a stable rotary force is obtained by a high torque in a microscopic size adapted for a motor to be used for repairing a sleeve.
AKAHA TAKASHI
NAGASHIMA TADASHI
TSUKAMOTO YOSHIMASA
YOSHIOKA KYOICHI
SASHITA TOSHIO
SHINSEI INDUSTRIES CO