CORELESS COIL AND MANUFACTURING METHOD FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a coreless coil in an approximately hollow cylindrical shape enhanced in space factor.SOLUTION: A magnet wire W is wound around a winding jig, in which a plurality of attachable/detachable hanging pins 1, 2 and 3 obliquely protrude, so that at least two kinds of non-similar shapes exist. The non-similar shapes made by winding the magnet wire W are formed so that the area of the shapes become larger as approaching a winding end in the same winding area with the same phase, and then the wire is subjected to thermally welding/press molding into a predetermined approximately hollow cylindrical shape.SELECTED DRAWING: Figure 4