| 摘要 |
PROBLEM TO BE SOLVED: To provide an on-vehicle antenna device which can be held stably while keeping the winding shape of a coil element, and the number of turns of the winding of coil element can be adjusted easily in the manufacturing process.SOLUTION: A coil element 40 is manufactured by applying a winding 42 to a bobbin 41 made of resin. On the outer peripheral surface of the bobbin 41, a guide groove 48a becoming the route of winding, and a plurality of protrusions 48b along the route of the winding 42 are provided. The guide groove 48a goes around the outer peripheral surface of a drum spirally. The plurality of protrusions 48b are provided, respectively, at a plurality of circumferential positions on the outer peripheral surface of a drum. The end-of-winding of the winding 42 is hooked to an arbitrary protrusion 48b and pulled out in the axial direction, before being connected electrically with the upper terminal 45.SELECTED DRAWING: Figure 2 |
