Transmission device for an ignition system of an internal combustion engine
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorToshio Maekawa
Life of this patent
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Abstract
A transmission device for an ignition system of an internal combustion engine, which is equipped with a cylindrical terminal member made of an elastic material and having an inner circumference engagable with either one of an ignition coil or a spark plug. The cylindrical terminal member includes an engagement portion into which a terminal portion of an insulating member is fitted at its outer circumference, and the engagement portion has a thick-walled portion provided with an escape space to permit radial elastic deformation. This structure allows the elastic deformation of the thick-walled portion when the engagement of the terminal member is engaged with the spark plug or the ignition coil, thus facilitating engagement without excessive effort.
Claims7
A transmission device for an ignition system of an internal combustion engine, comprising:
- a) an electrical conduction member for transmitting a high voltage for ignition generated by an ignition coil to a spark plug;
- b) an electrically insulating member having a cylindrical terminal portion formed on an end portion thereof, and covering said conductive member to insulate said conductive member from the outside;
- and
- c) a cylindrical terminal member made of an elastic material and having an inner circumference dimensioned to be closely and tightly engaged with one of said ignition coil and said spark plug, and further having a cylindrical engagement portion configured to be inserted in said terminal portion of said insulating member, said cylindrical engagement portion extending radially outwardly from said inner circumference and defining, intermediate a radial thickness thereof, an axially extending open space to accommodate a radially outwardly directed elastic deformation of said tubular portion during an engagement with or a disengagement from one of said ignition coil and said spark plug.
Dependencies are inferred from the claim text.