Ignition coil device for internal-combustion engine

Details Ignition coil device for internal-combustion engine Ignition coil device for internal-combustion engine

1997-12-15

1999-11-02

Yuen, Henry C.

Inductor devices

With outer casing or housing

Potted type

336 92, 123634, H01F 2702, F02P 1500

Patent

active

059778563

ABSTRACT:
An ignition coil device for an internal-combustion engine reduces the deterioration in reliability caused by heat stress. The ignition coil device is provided with: a case (5); a core (6) provided in the case (5); a primary coil (8) which is provided so that it surrounds the core (6) and which has a primary winding (13) trough which a primary current flows composed of a conductor wound around a bottomed cylindrical primary bobbin (12); a secondary coil (9) which is provided so that it surrounds the primary coil (8) and in which high voltage is generated by the interruption of the primary current; a stopper (21) which is provided at an opening (12a) of the primary bobbin (12) to close the opening (12a) of the primary bobbin (12); and an insulator (11) composed of a thermosetting resin which is provided in the case (5) to secure the primary coil (8) and the secondary coil (9) in the case (5). The stopper (21) prevents the insulator (11), which has not yet been thermally cured, from flowing between the core (6) and the primary bobbin (12) when it is charged into the case (5).

REFERENCES:
patent: 5349320 (1994-09-01), Suzuki et al.
patent: 5416459 (1995-05-01), Ida et al.
patent: 5563510 (1996-10-01), Gorrell et al.
patent: 5680087 (1997-10-01), Sakata et al.
patent: 5703556 (1997-12-01), Kikuta et al.
patent: 5781092 (1998-07-01), Nakamachi et al.
patent: 5870012 (1999-02-01), Sakamaki et al.

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