| 摘要 |
<p>PURPOSE:To provide a rotary transformer wherein, when the number of the signal coils is small, an unnecessary leading-out trench which does not lead out a signal coil and deterioration of performance due to decrease of facing area are not generated, when many kinds of articles are produced by using the same shape terminal board. CONSTITUTION:Leading-out trenches 23b, 24b and wiring trenches 23a, 24a which are to be formed on inside magnetic material 15 and outside magnetic material 16 are formed so as to be sifted in the circumference direction in order not to penetrate in the longitudinal direction. Many wiring trenches 23a, 24a which are to be formed on a terminal board side are formed in accordance with the forms of terminal boards 21, 22, but the number of the leading-out trenches 23b, 24b in the part intersecting the leading-out wires of signal coil 19, 20 can be limited as the necessary number. Thereby the metal mold structure is remarkably simplified, and low cost and high performance can be realized.</p> |
