| 摘要 |
PROBLEM TO BE SOLVED: To provide a coil bobbin formed by injection molding with high productivity and also to provide a coil device for an antenna using such a coil bobbin.SOLUTION: A coil device 100 includes: a core 10 formed of a magnetic material; a coil bobbin 20 having a winding shaft 22 and attached to the periphery of the core 10; and a coil wire 50 wound around the winding shaft 22. The coil bobbin 20 is formed of one component integrally molded with a resin material and constituted so that projection to any region of the coil bobbin 20 is also prevented from being overlapped on the other region of the coil bobbin 20 in at least one direction (X direction) intersecting with the extension direction of the winding shaft 22. |
