| 摘要 |
PURPOSE:To ensure excellent insulation property between the primary and secondary windings by winding the primary winding within a first ring shaped groove toward the upper layer from the lowest layer of bobbin not allowing the leadout wire to be connected to the secondary winding at the upper layer and orthogonally crossing the leadout wire of secondary winding through a predetermined interval from the upper layer of primary winding. CONSTITUTION:When the pin-shaped terminals 51, 52, 61, 62 are implanted in lateral to the side surface of a bobbin 2 and the bottom surface of a first ring-shaped groove 71 at the external circumference of bobbin 2 is located lower than the bottom surface of the second - fifth ring-shaped grooves 72, 75. Moreover, a plurality of cut-away portions for inserting the leadout wires 3a, 3b of the primary winding 3 and the secondary winding 4 along the axial direction are provided at the bottom part of walls 2a1-2a6 for separation. Thereafter the primary winding 3 is wound, in the ring-shaped groove 71, toward the upper layer from the lowest layer of bobbin 2 in order to obtain excellent insulation property between the primay windings 3. In addition, the leadout wire 4a of secondary winding 4 is bridged in the orthogonal direction from the upper layer of winding 3 with a predetermined interval into the ring-shaped groove 72, thereby enhancing insulation property between the windings 3, 4. |
