Engine igniting coil device

Details Engine igniting coil device Engine igniting coil device

1997-08-28

2000-01-04

Luebke, Renee S.

Inductor devices

With outer casing or housing

Potted type

336198, 336 92, 336205, 123634, H01F 2702, H01F 2730

Patent

active

060114576

ABSTRACT:
An engine igniting coil device directly attachable to an igniting plug, wherein both primary and secondary coil bobbins have flangeless ends, the secondary coil bobbin has inwardly protruding ribs for coaxially supporting the flangeless end of the primary coil bobbin mounted therein and the secondary coil bobbin also has protrusions formed at its external wall apart from a high-voltage terminal of the secondary coil wound thereon and is coaxially mounted in a coil case by abutting its protrusions on an inner wall thereof, thus eliminating the possibility of damaging the bobbins by a large thermal stress produced in solidified insulating resin in a coil case by a differential thermal shrinkage in an axial direction and preventing a leakage current from a high-voltage side of the secondary coil bobbin to the coil case through a flange-like connection.

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