Ignition coil for internal combustion engines

Details Ignition coil for internal combustion engines Ignition coil for internal combustion engines

1993-08-17

1994-09-20

Kozma, Thomas J.

Inductor devices

With outer casing or housing

Internal inductor support

336 96, 336107, 336110, 336198, H01F 2702, H01F 2730

Patent

active

053493206

ABSTRACT:
An ignition coil for internal combustion engines including a primary core formed in a shape of rectangular ring and fixed on the inner peripheral edge of the bottom wall of a casing, a secondary core having a main portion of which is formed in a shape of straight beam, a primary winding assembly having a primary bobbin formed on the main portion of the secondary core, and a secondary winding assembly. Both winding assemblies are housed in an internal space of the casing, and a synthetic resin is filled in the internal space of the casing and cured. In the side wall of the casing is formed a rectangular opening portion which opens at the top end; and on the primary bobbin a rectangular closing member is formed integrally therewith. When the opening portion of the casing is closed with the closing member, both end faces in the longitudinal direction of the secondary core formed in the primary bobbin face to the inside peripheral surfaces of the primary core. A permanent magnet with its one face in contact with one end face of the secondary core is supported on the primary bobbin, while the other face of the permanent magnet is in contact with the primary core.

REFERENCES:
patent: 4843362 (1989-06-01), Heritier-Best
patent: 4926152 (1990-05-01), Ito et al.
patent: 5041807 (1991-08-01), Badaud

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