CONTINUOUSLY BENT COIL AND MANUFACTURE OF THIS CONTINUOUSLY BELT COIL, AND HIGH-FREQUENCY TRANSFORMER AND HIGH-FREQUENCY REACTOR USING THIS COIL

摘要

PROBLEM TO BE SOLVED: To make a foilshaped conductor out of a sheetlike thin conductor of a constant size efficiently suppressing waste, by folding a foilshaped conductor in a proper angle direction formed zigzag in a state of being bent alternately, and forming it into a circular spiral coil or square spiral coil. ;SOLUTION: A foilshaped conductor in a shape of being able to invert or unfold zigzag in a dense state alternately is made by punching a sheetlike thin conductor such as copper foil, etc., into a continuous waveform of inherent shapes, 3/4 circles for example. And a 1/4 circle part 3A and 3/4 circle parts 3B, 3C..., etc., are formed by folding it back five times from the parts of lines CD, EF, GH, IJ, and KL shown by broken lines respectively, and an annular coil of approximately four turns is formed. Consequently, it becomes possible to make a foilshaped conductor for a coil efficiently out of a sheetlike thin conductor of a constant size suppressing waste as much as possible. Besides, it becomes possible to thin a coil sharply even in the case of forming a coil of multiple turns.;COPYRIGHT: (C)1997,JPO