IGNITION COIL FOR INTERNAL COMBUSTION ENGINE

• Main Author: WADA JUNICHI
• Format: Patent
• Language: English; Japanese
• Published: 21.01.2016
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; COMBUSTION ENGINES; ELECTRICITY; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES; INDUCTANCES; LIGHTING; MAGNETS; MECHANICAL ENGINEERING; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES; TRANSFORMERS; WEAPONS

PROBLEM TO BE SOLVED: To provide an ignition coil for an internal combustion engine which enables a protruding length of a connector part from a contour of a case to be reduced without shortening the connector part.SOLUTION: An ignition coil 1 for an internal combustion engine includes: a primary coil 21 and a secondary coil 22 which are magnetically coupled to each other; a core 3 which forms a magnetic path of magnetic flux generated by an electric current flowing through the primary coil 21; a case 4 which houses the primary coil 21, the secondary coil 22, and the core 3; and a connector part 11 for connecting an external connector. The connector part 11 protrudes from the case 4 and is formed so that the external connector is connected thereto so as to be covered by an outer periphery of the connector part 11. The case 4 includes a caved part 61, which is caved further than other portions, in a periphery of the connector part 11. 【課題】コネクタ部の長さを短くすることなく、ケースの外形からのコネクタ部の突出量を小さくすることができる内燃機関用の点火コイルを提供すること。【解決手段】内燃機関用の点火コイル１は、互いに磁気結合された１次コイル２１及び２次コイル２２と、１次コイル２１への通電によって生じる磁束の磁路を構成するコア３と、１次コイル２１と２次コイル２２とコア３とを収容するケース４と、外部コネクタを接続するためのコネクタ部１１とを有する。コネクタ部１１は、ケース４から突出しており、かつ、外周から覆われるように外部コネクタが接続されるよう構成されている。ケース４は、コネクタ部１１の周囲に、他の部分よりも陥没した陥没部６１を有する。【選択図】図１