Patent ID: 7907040

Claim:
An ignition coil comprising: a coil body that has a primary coil and a secondary coil; a primary resin molded frame that has the coil body disposed therein in a fixed relation, wherein the primary resin molded frame has a plurality of exposed side wall portions that hold the coil body therebetween; and a secondary resin molded casing that is molded to have the coil body and the primary resin molded frame partly embedded therein, wherein: the secondary resin molded casing is configured so that at least a part of each of said exposed side wall portions of the primary resin molded frame is uncovered and exposed to an outside of the secondary resin molded casing the plurality of exposed side wall portions of the primary resin molded frame includes a first exposed side wall portion and a second exposed side wall portion; the coil body is held between the first exposed side wall portion and the second exposed side wall portion; the primary resin molded frame includes a third exposed side wall portion that connects the first exposed side wall portion with the second exposed side wall portion; the primary resin molded frame includes a covered side portion that is covered with the secondary resin molded casing; and the first to third exposed side wall portions and the covered side portion form a rectangular frame for receiving and supporting the coil body.