| 摘要 |
PURPOSE:To shorten the profile size and to reduce the width by employing a yoke disposed between rotary discs, and mounting back-to-back poles of one side of poles at every rotary disc adjacent to the yoke. CONSTITUTION:Disc-shaped rotary discs 2a, 2b are secured by superposing longitudinally through an axle 1, and poles 3a, 3b are disposed symmetrically through an air gap G to dispose the discs 2a, 2b therebetween. The poles 3a, 3b disposed at both ends of the axle 1 are respectively secured to yokes 4a, 4b, and the poles 3a, 3b disposed between the discs 3a and 2b are secured back-to-back on the yoke 4c. |
