| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ignition coil which can impregnate a casting resin without generating a bubble. <P>SOLUTION: As secondary bobbin 5 having a cylindrical shape is fitted to a periphery of a primary bobbin wound by a primary coil. The periphery of the wound frame 6 of the secondary bobbin 5 is partitioned by a plurality of collars 7 so that a plurality of winding spaces 8 exist in a lengthy direction. Each coil winding space 8 is wound by a secondary coil. A casting resin passing hole 12 is provided in a diameter direction between the wound frame 6 of the secondary bobbin 5 and the collar 7 adjacent to it. <P>COPYRIGHT: (C)2003,JPO |
