| 摘要 |
PURPOSE:To lessen magnetic reluctance and improve motor efficiency by composing a main magnetic path with a core, a permanent magnet, a dished rotator and a yoke. CONSTITUTION:An annular permanent magnet 1 is secured to a dished rotator 2 made of a ferromagnetic material. A rotating shaft 3 is attached to the center of this dished rotator 2 to form a rotor. Said rotating shaft 3 is borne by a bearing 5 fitted to an anchor block 4. A ferromagnetic material plate yoke 6 is fitted so as to have a suitable gap from the bottom of the anchor block 4. A coil 7 has a ferromagnetic core 8 which is secured to the yoke 6 by means of a screw 9. A main magnetic path of this flat-type motor is composed of the core 8, permanent magnet 1, dished rotator 2 and yoke 6.
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