| 摘要 |
<p>PROBLEM TO BE SOLVED: To form a rotary transformer which is small in total shape and does not require severeness in work accuracy and in assembling accuracy by simplifying core shape. SOLUTION: This rotary transformer is constituted by a pot-shaped core 102A formed of an annular magnetic-material element and having a roughly U-shaped cross section in axial direction, a disk-shaped core 104A formed of an annular magnetic-material element and having a radial-direction width which is the same as that of the pot-shaped core 102A, a primary coil 114 annularly arranged on an inner circumferential face of the feet 102a, 102b of the pot- shaped core 102A, and a secondary coil 116 annularly arranged on a position of the disk-shaped core 104A facing the primary coil 114 and keeping a specified distance from the primary coil 114. The secondary coil 116 is placed between the feet 102a, 102b of the pot-shaped core 102A, while the disk-shaped core 104A and the pot-shaped core 102A are arranged so as to be able to mutually rotate against each other.</p> |
