| 摘要 |
<p>PURPOSE:To suppress cross-talk between channels low enough and facilitate easy manufacture and obtain stable aging characteristics by coupling annular cores which compose each channel by ribs. CONSTITUTION:A rotary transformer is composed of a stator core body 31 and a rotor core body 32 which are facing each other with a small gap G in between. The stator core body 31 is composed of a stator core 37, composed of a large diameter annular core 34 on one end surface of which a groove 33 is formed concentrically with the inner and outer diameter and a small diameter annular core 36 on one end surface of which a groove 35 is formed concentrically with the inner and outer diameter by arranging them concentrically, and coils 38, 39 which are provided buried in the grooves 33, 35 respectively. The rotor core body 32 is composed in a same way. The stator core 37 and the rotor core 44 are connected by connecting integrally the annular cores by two ribs 50, 51 (52, 53) which are provided to the positions 180 deg. apart. The ribs are provided to the positions where the one surface of each rib comes to the same end surface of the annular core 34, 36 (41, 43) and the thickness of each rib is designed to be as thin as possible.</p> |
