Ignition coil assembly for internal combustion engine
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsNobuyuki Sawazaki, Shigemi Murata, Mitsuru Koiwa, Yutaka Ohashi
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Abstract
An ignition coil assembly for an internal combustion engine includes a primary coil, a secondary coil, at least one bobbin, a core, a first resin member and a casing. The primary coil and said secondary coil are wound on the bobbin. The core has core elements with a gap there-between through which the primary and secondary coils are magnetically coupled to one each other. The casing accommodates the primary and secondary coils, the bobbin and the core. And the first resin member covers a part of the core elements, the part which are confronted with said secondary coil, and the first resin member is accommodated in the casing.
Claims11
An ignition coil assembly for an internal combustion engine, comprising:
- a primary coil;
- a secondary coil;
- at least one bobbin on which said primary coil and said secondary coil are wound;
- a core having first and second core elements and a gap therebetween for magnetically coupling said primary and secondary coils to each other;
- a casing accommodating said primary and secondary coils, said bobbin and said core;
- a first resin member accommodated in said casing, said first resin member covering a first part of each of said first and second core elements, the first part being a surface confronted with said secondary coil, said first resin member extending across said air gap and having a protrusion extending into said air gap to define the dimension of said air gap between said first and second core elements;
- and
- a second resin member for covering a second part of said first core element, the second part being outside the surface of an insulating resin, said second resin member being accommodated in said casing in such a manner that said second resin member is partially exposed outside said insulating resin.
Dependencies are inferred from the claim text.