| 摘要 |
PURPOSE:To obtain a small sized and highly efficient motor by a method wherein a magnetic field detecting element is inserted into a small hole or a notch provided in the surface of a stator yoke. CONSTITUTION:A coil 10 is arranged and fixed on one side of a flat circular stator yoke 3 facing a rotor magnet coil 4 and a printed circuit board 2 on which a magnetic field detecting element is fitted and which is also used as a circular coil termination plate smaller than the stator yoke 3 is fixed on another side of the stator yoke 3. The magnetic field detecting element 1 is fitted to the specified position of the printed circuit board 2 and this element 1 is inserted into a small hole provided to the stator yoke 3 at the position which has a specified angle from the position of the coil in such a manner that the tip surface of the element 1 is almost identical with the coil fixing surface of the stator yoke 3. The writing pattern of the printed circuit board 2 is provided to the surface opposite to the surface on which the magnetic field detecting element 1 is fitted and the lead wires 15 are drawn out from the wiring pattern to the upward. The flat circular rotor magnet 4 is equally divided into 2n poles and magnetized and fixed to a shaft 7, which is supported by a bearing 6 so as to rotate freely, via a magnetic pole connecting plate 8. |
