| 摘要 |
PROBLEM TO BE SOLVED: To provide a coil plug which is used in a portable telephone set, has a good antenna function, and is mass producible at a low cost. SOLUTION: A coil plug having a recessed spiral is injection molded using an insulating synthetic resin material, and the recessed spiral is subjected to plating to form a conductive recess spiral 3 or the recess is filled with a conductive synthetic resin by two-color molding and the surface is subjected to plating so that a conductive recess spiral 3 is formed. Thus coil plug 10 is fabricated.
|
