| 摘要 |
PURPOSE:To detect the position of a magnet simply by attaching a magnetic detector onto the fixing member, whereon the magnetic fluxes from iron cores and magnets repel each other and bend, of a motor which rotates by the magnetic fields from the iron cores and the magnets. CONSTITUTION:A rotary shaft 11 is inserted through bearings 8A and 8B in a hollow cylindrical rotary shaft support 4 erected at the center of the plane part of a fixing member 3. A yoke 12, which is equipped, at the inside periphery, with a plurality of magnets 13, is stuck fast to the rotary shaft 11 so as to form a rotor. A plurality of electromagnetic coils, where windings 6 are wound on iron cores 5, are stuck fast to the periphery of the rotary shaft support 4 and are made stators, which correspond to magnets 13. A position detector 15 is soldered, with the magnetism sensing face 15A up, in the section B on the fixing member 3, where the magnetic fluxes from the iron core 5 and the magnet 13 repel each other and bend. Hereby, the position of the magnet 13 can be detected with simple structure. |
