| 摘要 |
<p>PURPOSE:To improve assembly workability and reduce crosstalk by providing a short ring which consists of a conductive material which is electrically short- circuited and can freely expand and contract between the coils of an inner- periphery side magnetic body. CONSTITUTION:A rotary side magnetic body 3r (R core) which is provided at an outer-periphery side and a fixed side magnetic body 3s (S core) which is provided at an inner-periphery side oppose each other with a fine gap between them then magnetic paths C1 and C2 are formed if signal current flows, for example, to an S coil 5s. Then, current is induced to an R coil 5r due to mutual induction operation and signal is transmitted, where the short ring 8s short- circuits both edges of a coil spring consisting of a conductive material which can expand and contract freely by waxing and is inserted into a short ring winding groove 8gs of the S core 3s. By generating eddy current to the short ring 8s utilizing change of magnetic flux of the magnetic path C2 with time, the magnetic flux of the magnetic path C2 is reduced, thus improving assembly workability and reducing crosstalk.</p> |
