Patent ID: 6208231
Filing Date: 2001-03-27
Classification: H01F

Abstract:
An ignition coil for an engine comprising:a coil assembly including the following components:a central core assembly;a primary spool;a primary coil wound around the primary spool;a secondary spool;a secondary coil wound around the secondary spool; andan outer core;said central core assembly, said secondary spool, the secondary coil, said primary spool and said primary coil being received in said outer core member and said components of said coil assembly being concentrically disposed;a resin insulator filled around the components of the coil assembly that are within said outer core; and further comprising:a separating member interposed between two of said components of said coil assembly, said separating member having a low adhesion with so as to be displaceable relative to said resin insulator so that at least one of 1) an inner peripheral part comprised of components of said coil assembly on a radially inner side of said separating member and 2) an outer peripheral part comprised of the components of said coil assembly on a radially outer side of said separating member is movable relative to said separating member, whereby said inner peripheral part and said outer peripheral part expand and contract separately from each other.