To provide an ignition coil for an internal combustion engine sufficiently ensuring the insulation property of a primary coil wound around a center core, and capable of improving thermal shock resistance.
An ignition coil 1 includes: a center core 23 made by compression-molding soft magnetic material powders; a primary coil 21 wound around the center core 23; a secondary coil 22 arranged on an outer peripheral side of the primary coil 21; and a mold resin portion 29 made from thermosetting resin, and covering the center core 23, the primary coil 21, and the secondary coil 22. At least a part of a surface 230 of the center core 23 around which the primary coil 21 is wound is coated by resin coating made from the thermosetting resin. At least a part of the center core 23 coated by the resin coating is coated by elastic coating having elasticity.
NAKAMOTO KIYOTOSHI
MIWA TETSUYA
| JP2000049024A | 2000-02-18 | |||
| JP2009038107A | 2009-02-19 | |||
| JP2009088479A | 2009-04-23 | |||
| JP2005159030A | 2005-06-16 | |||
| JP2009033112A | 2009-02-12 |