Patent ID: 6469608
Filing Date: 2002-10-22
Classification: H01F

Abstract:
A stick-type ignition coil device for engines comprising:a cylindrical coil casing; a central core shaped in a rod and disposed in a radial center of the coil casing; primary and secondary windings disposed concentrically around the central core in the coil casing; positioning member having upper and lower surfaces and disposed above the central core to define a position of the central core at a side of the lower surface thereof; an insulating resin filled in spaces in the coil casing for electrical insulation among components; and a thermal stress releasing member disposed on the upper surface of the positioning member and covered with the insulating resin, the thermal stress releasing member being for releasing thermal stress between the positioning member and the insulating resin covering the positioning member, wherein the thermal stress releasing member is made of a material which is less adherent to the insulating resin and to the positioning member than the insulating resin is adherent to the positioning member.