Ignition coil for motor vehicles

Details Ignition coil for motor vehicles Ignition coil for motor vehicles

2001-06-01

2003-10-21

Enad, Elvin (Department: 2832)

Inductor devices

With outer casing or housing

C336S198000, C336S096000, C123S634000

Reexamination Certificate

active

06636138

ABSTRACT:

TECHNICAL FIELD
The present invention relates to an ignition coil for internal-combustion engines with spark ignition for motor vehicles. In particular, the invention relates to an ignition coil as specified in the preamble of claim
1
.
BACKGROUND OF THE INVENTION
Ignition coils for motor vehicles are known that have an elongated shape and are designed to be mounted directly on the end of a corresponding spark plug.
A known ignition coil of this type comprises a magnetic core having an elongated shape, a primary spool supporting a low-voltage winding, and a secondary spool supporting a high-voltage winding. The primary spool, secondary spool, and magnetic core are coaxial with each other and are inserted inside a tubular casing having an elongated shape which carries, at one first end, a low-voltage connector, and at one second end a high-voltage connector that is designed to connect with a spark plug.
Ignition coils of this type are normally equipped with a diode having a first rheophore electrically connected to one end of the high-voltage winding, and a second rheophore electrically connected to the high-voltage connector of the ignition coil. Mechanical connection of the diode to the other components of the ignition coil generally represents a delicate part of the process of assembling an ignition coil. In traditional solutions, also electrical connection between the rheophore of the diode and the high-voltage connector is somewhat problematical.
SUMMARY OF THE INVENTION
The object of the present invention is to improve on an ignition coil of the type specified above in such a way as to overcome the drawbacks of known solutions.
According to the present invention, the aforesaid object is achieved by an ignition coil having the characteristics specified in claim
1
.


REFERENCES:
patent: 2002/0057179 (2002-05-01), Shimada et al.
patent: 44 24 161 (1995-01-01), None
patent: 196 23 399 (1998-01-01), None
patent: 0638971 (1995-02-01), None
patent: 2252454 (1992-05-01), None
patent: 2 252 454 (1992-08-01), None

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