| 摘要 |
<p>PURPOSE:To improve easiness in assembling the title transformer by forming wound coils on adhesive layers on rear surfaces of nonmagnetic stripes of a polyester sheet. CONSTITUTION:Magnetic powder sheets 10 are put around the outer periphery of a simplified winding jig 16 in the form of a roll. Each sheet is provided with nonmagnetic sections 15 having a size corresponding to the coil groove of a rotor core 8 and, after the sheets 10 are put on the jig 16 with the sections 15 outside, a magnet wire is wound around the sections 15 provided with adhesive layers by a specific number of turns. Thus a rotor-side wound coil 11 is formed. The width of the nonmagnetic sections 15 is set at the width A of the coil groove of the rotor core 8 and the other section of the sheet 10 is constituted to a magnetic powder section 14 which is formed by applying and treating paste of Ni-Zn magnetic powder. Since the adhesive layers 10 are formed on the surface of the magnetic powder sheet 10, the magnet wire can be firmly fixed to the cylindrical wound coil and the rotor-side wound coil 11 does not become loose when the magnet wire is wound around the nonmagnetic sections 15.</p> |
