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AssigneeDenso Corporation
InventorsTakashi Nagata, Kazutoyo Osuka, Atsuyuki Konishi, Kazuhide Kawai, Junichi Wada
Estimating the term…
An ignition coil (1) having a case (2), a core (22) installed in the case, a primary spool (25) disposed substantially coaxially around an outer circumference of the core within the case, a primary coil (26) comprising a wire wound around the primary spool, a secondary spool (23) disposed substantially coaxially around the outer circumference of the core within the case, a secondary coil (24) comprising a wire wound around the secondary spool and a resin insulating material (5) filled within the case, the ignition coil being characterized in that the spool of the primary and the secondary spools which is disposed between the secondary coil and the core and/or which is disposed between the secondary coil and the primary coil comprises a base resin having an adhesive strength to the resin insulating material which is less than that provided by polybutylene terephthalate and an insulation breakdown voltage which exceeds that provided by polyphenylene sulfide.
An ignition coil having a case, a rod-like core installed in said case, a cylindrical primary spool disposed substantially coaxially around an outer circumference of said core within said case, a primary coil comprising a wire wound around said primary spool, a cylindrical secondary spool disposed substantially coaxially around the outer circumference of said core within said case, a secondary coil comprising a wire wound around said secondary spool and a resin insulating material filled within said case, said ignition coil being characterized in that;
An ignition coil having a case, a rod-like core installed in said case, a cylindrical primary spool disposed substantially coaxially around an outer circumference of said core within said case, a primary coil comprising a wire wound around said primary spool, a cylindrical secondary spool disposed substantially coaxially around the outer circumference of said core within said case, a secondary coil comprising a wire wound around said secondary spool and a resin insulating material filled within said case, said ignition coil being characterized in that;
An ignition coil as set forth in claim 14, wherein the insulation breakdown voltage of said base resin is 15 kv/mm or greater when measured using a measuring method of JIS K 6911.
An ignition coil as set forth in claim 14, wherein said case is formed of a high-adhesion resin having a higher adhesion to said resin insulating material than to said base resin.
An ignition coil having a case, a rod-like core installed in said case, a cylindrical primary spool disposed substantially coaxially around an outer circumference of said core within said case and having a winding portion around which a winding is wound, a cylindrical secondary spool disposed substantially coaxially around the outer circumference of said core within said case and having a winding portion around which a winding is wound, and a resin insulating material filled and set within said case, said ignition coil being characterized in that;
A method for fabricating an ignition coil having a spool comprising a winding portion around which a wire is wound and end portions disposed at longitudinal ends of said winding portion, said method comprising:
A method for fabricating an ignition coil having a case, a rod-like core disposed in said case, a cylindrical inner spool disposed substantially coaxially around an outer circumference of said core within said case and having a winding portion around which a winding is wound, a cylindrical outer spool disposed substantially coaxially around the outer circumference of said core within said case, possessing a winding portion around which a winding is wound and having an outer circumferential surface having a lower adhesion to a resin insulating material than to an inner circumferential surface of said case, and said resin insulating material filled and set within said case, said method comprising:
Dependencies are inferred from the claim text.