Patent ID: 9728322
Date: 2017-08-08
CPC Classifications: F02P,H01F,H01T

Claim:
1. An ignition coil for an internal combustion engine comprising: a coil body which includes a coil casing, a primary coil, and a secondary coil, the primary coil including a cylindrical primary spool which is made of resin and around which a primary winding is wound, the secondary coil being disposed coaxially inside the primary coil, the primary coil and the secondary coil being disposed within the coil casing; and a connector casing which includes a fitting hole in which an end of the coil body is fit, the connector casing having disposed therein a conductive terminal which has a conductor fastener exposed inside the fitting hole, the conductor fastener having a gripping slit in which a winding end is gripped in electric connection therewith, the winding end extending from the primary spool substantially in a winding direction that is a direction in which the primary winding is wound; wherein the connector casing also includes a conductor guide which is disposed at least on one of sides of the conductor fastener which are opposed to each other in the winding direction, the conductor guide protruding toward the primary spool and having a guide slit with an opening which faces the primary spool and through which the winding end is inserted into the guide slit, and wherein the primary spool is equipped with a backup support which protrudes toward the connector casing and works to physically support the winding end in contact therewith.