| 摘要 |
PURPOSE:To obtain a motor having a firm coil which is operative for stable driving at high speed by a construction wherein a rectangular coil is wound on a frame for which at least 3 pieces of frame plates are arranged in parallel, and a center yoke is inserted and arranged between the frame plates. CONSTITUTION:A frame 11 comprises at least 3 pieces of frame plates 11a, 11b, 11c arranged in parallel at given intervals, and a rectangular coil 13 is wound on outer periphery of the frame 11. Then, a projection of a T-shaped center yoke 15 is formed forkedly, which is inserted between the frame plates 11a, 11b, 11c on which the rectangular coil 13 is wound, outer yokes 17a, 17b are provided on both ends of the center yoke 15 through magnets 16a, 16b thereby arranging that the end of the center yoke and ends of the outer yokes 17a, 17b are kept opposite at given interval b. According to this constitution, the rectangular coil 13 becomes firm in mechanical construction, and a gap h between he center yoke 15 and the outer yokes 17a, 17b can be made narrow, thus putting out a large driving force. |
