| 摘要 |
<p>The present invention relates to a rotary transformer which stably fixes a coil on a primary side of the rotary transformer and improves cooling performance. The rotary transformer according to the present invention comprises: a secondary side assembly comprising a secondary side core which is fixed on a rotary shaft vertically installed on a housing to rotate with the rotary shaft, and wherein a secondary side annular recess is formed on an outer circumferential surface thereof, and a secondary side coil wound on the outer circumferential surface of the secondary side annular recess; and a primary side assembly comprising a primary side core which is fixed on the housing, and wherein a primary side annular recess is formed on an inner circumferential surface thereof, a primary side coil wound on the inner circumferential surface of the primary side annular recess, and a plurality of coil fixing members inserted into the primary side annular recess to fix the primary side coil inside the primary side annular recess without causing a movement. The coil fixing members are plates formed from a synthetic resin material which is electrically non-conductive and thermally conductive. A taper is formed on an upper end side or a lower end side of outer sides of the coil fixing members which contact an upper end and a lower end of the primary side annular recess.</p> |
