| 摘要 |
PROBLEM TO BE SOLVED: To provide an ignition device for an internal combustion engine, which not only prevents shorting between winding layers by insulating resin which is filled, easily permeating to the central part of a secondary coil, but also effectively prevents expanding of a separating wall caused by the secondary coil which is wound. SOLUTION: Separating walls 24a and 24b are provided on an outer surface of a bobbin cylinder part 23 of a bobbin 22, and a primary coil 15 and a second coil 16 are provided in each space separated by each separating wall 24a and 24b. Rib projecting parts 27 which expand to the outsides of axial directions are formed at four positions, avoiding cross iron core parts 30 and 31 in a separating wall part 24b of the outside of axis core direction of the bobbin 22, which separates the secondary coil part 16, toward the bobbin cylinder 23 from the outer peripheral. The cross iron cores 30 and 31 are so equipped as to attach the bobbin 22 sandwiched between both upper and lower sides, are provided in a case unit 13 under this condition and are solidified by filling thermally cured resin in the case unit 13. |
