| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an ignition coil wherein a covering tube is eliminated for the center core. SOLUTION: This ignition coil 1 is provided with a bar-like core body 13 made of magnetic material, a secondary coil 21 wound around the outer circumference of the core body 13, a secondary spool 20 that is arranged between the core body 13 and secondary coil 21 and is wound by the secondary coil 21, a primary coil 24 wound around the outer circumference of the secondary coil 21, a primary spool 23 that is arranged between the secondary coil 21 and the primary coil 24 and is wound by the primary coil 23, and a cylindrical case 11 arranged on the outer circumference side of the primary coil 24. The case 11 is filled with a resin insulation material 26 to mold and fix the secondary and primary coils 21 and 24. A cylindrical member 17 comprised of hard tube is arranged on the outer circumference of the core body 13, and the cylindrical member 17 is projected from the shaft end 13a of the core body 13.</p> |
