| 摘要 |
PURPOSE:To realize the miniaturization and the increase of the output of a pickup device, and simultaneously, to reduce its manufacturing cost by providing a coil body whose shape is kept by impregnating a coil with resin and a magnet body fitted and arranged in a through hole formed at the central part of the coil body. CONSTITUTION:Both the coil bodies 12, 13 are made of a conductive wire shaped into a coil form by the resin 14, and are provided with the through holes 15 at their central parts respectively. Besides, both the coil bodies 12, 13 are electrically connected in series, and simultaneously, they are arranged so that the through holes 15, 15 are communicated with each other, and a magnet 16 is fitted and arranged in the through holes 15, 15. Accordingly, the coil can be miniaturized compared with the case that the coil is wound around a bobbin, and simultaneously, even in the case that the number of turns of the coil is increased, the whole pickup device can be prevented from becoming large-sized. Thus, the miniaturization and the cost reduction of the whole pickup device can be realized while the output is increased. |
