| 摘要 |
PURPOSE:To contrive improvement both in temperature characteristics and electric insulating characteristics by a method wherein the insulated outer skin of the coil main body, formed by spirally winding a coil conductor, is constituted by a self-heat generating type polyester hardening resin using a resin injection method. CONSTITUTION:Resin 9 is injected into cavity parts 3A and 4A through the intermediary of a pipe line 7 and flow passages 3B and 4B by driving an injector 8, the resin is infiltrated between each coil conductor of a coil main body 5, and a coil insulated outer skin is formed on the circumference of the coil main body 5. At this time, as the resin 9 is self-heat generating hardening resin, it is hardened by the heat generated by itself. Then, clamp 6 is removed, the coil main body 5 is picked up from the cavities 3A and 4A, the resin located at the part of flow passages 3B and 4B formed when resin is poured into the mold is removed by trimming, and the coil is completed. |
