Patent ID: 7234454

Claim:
An ignition coil comprising: a cylindrical body that has a primary coil and a secondary coil, which are coaxially wound relative to each other; and a head that extends from the cylindrical body and is fixed to an engine case, wherein: spaces inside the head and the cylindrical body are filled by insulative resin; the head includes: a casing; a flange that protrudes radially outward of the casing and is fixed to the engine case; a connector that protrudes radially outward of the casing and is connected electrically to an external device of the ignition coil; and a conducting terminal that constitutes a conducting path; the conducting terminal includes: a connector pin that is fitted at the connector; an exposed contact that is exposed on a surface of the casing or the flange; and a connecting part that connects between the exposed contact and the connector pin; the conducting terminal is insert-molded in a casing resin that constitutes the casing; a portion of the conducting path of the connecting part is embedded in the insulative resin such that the insulative resin surrounds an entire outer perimeter of a cross section of the portion of the conducting path; and a remaining portion of the conducting path of the connecting part is embedded in the casing resin.