| 摘要 |
PURPOSE:To improve electric insulation properties of an electromagnetic coil and a cylindrical pole forming a magnetic path for the coil to yoke and obtain the feed water valve of low cost, which is having anti-corrosive properties, without applying any rust proof treatment such as plating or the like to the cylindrical pole and the yoke. CONSTITUTION:A bobbin 76 and an armature guide 38 are formed in one body by insert-forming after arranging upper and lower cylindrical yokes 54a, 54b and a yoke bottom plate 56 at predetermined positions thereof while terminals 60a, 60b at the inner part of a notch part in a condition that they are not contacting with the bobbin 76. Thereafter, the coil 82 is wound on the bobbin 76 and is connected to the terminals 60a, 60b while the yoke 66 is fitted to the coil 82 from the outside thereof. Next, resin such as epoxy or the like is coated from the outside excluding the terminals 60a, 60b, the inner surface and the periphery of the annular part 48, which is the part connected to the feed water valve, and the inner surface of the armature guide 38. |
