Ignition coil for internal combustion engines

摘要

In an ignition coil for an internal combustion engine, a column section and a notched section are provided in a side wall section of a case section of the ignition coil. A ventilation opening is formed in an up/down direction in the column section. The ventilation opening communicates with a ventilation passage formed between a sealing rubber and the case section and is open in an upper end section. A cover surrounding the column section and covering the upper end section is provided in the side wall section. A sealing section sealing the notched section is provided in the cover. The ignition coil has a filler resin that fills a space within the case section being in continuous contact with the sealing section and the side wall section and fixing the cover to the side wall section.

主权项

1. An ignition coil for an internal combustion engine including a coil output section that is disposed such as to be inserted into a plug hole of an internal combustion engine, a case section that is provided on an axial-direction upper end side of the coil output section and disposed outside of the plug hole, and a sealing rubber that is attached to a lower end section of the case section and seals an opening section of the plug hole, wherein:
a column section and a notched section are provided in a side wall section of the case section, the column section being formed by a portion of the side wall section being projected outward and the notched section being formed by a portion of the side wall section being cut from the upper end; a ventilation opening is formed in an up/down direction in the column section, the ventilation opening communicating with a ventilation passage formed between the sealing rubber and the case section and being open in an upper end section; a cover surrounding the column section and covering an upper end section of the ventilation opening is provided in the side wall section, and a sealing section sealing the notched section is provided in the cover; and a filler resin filling a space within the case section is in continuous contact with the sealing section and the side wall section and fixes the cover to the side wall section.