| 摘要 |
PROBLEM TO BE SOLVED: To enable a flexible wiring board to be rolled a plurality of times in a coiled electronic component structured by rolling the flexible wiring board and connecting a plurality of lines provided on the flexible wiring board with one another to constitute a single coil. SOLUTION: The flexible wiring board 2 exhibiting a cylinder with a radius R when rolled is shaped to include joints 3a and 3b, a barrel 3e provided therebetween, and curved parts 3c and 3d between the respective joints 3a and 3b and a linear part 3e when developed. A length vertical to an axis of the flexible wiring board 2 is slightly longer than 4πR. Since line segments 300a and 300b obtained by projecting the joints 3a and 3b onto the axis do not overlap a line segment 300e obtained by projecting the linear part 3e onto the axis, the flexible wiring board 2 can be wound around a bobbin 1 twice (a plurality of times). COPYRIGHT: (C)2009,JPO&INPIT
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