EP0321416A1 - Bobine d'allumage - Google Patents

Bobine d'allumage Download PDF

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Publication number
EP0321416A1
EP0321416A1 EP88830507A EP88830507A EP0321416A1 EP 0321416 A1 EP0321416 A1 EP 0321416A1 EP 88830507 A EP88830507 A EP 88830507A EP 88830507 A EP88830507 A EP 88830507A EP 0321416 A1 EP0321416 A1 EP 0321416A1
Authority
EP
European Patent Office
Prior art keywords
casing
cover element
ignition coil
appendage
annular
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP88830507A
Other languages
German (de)
English (en)
Inventor
Ferdinando Adelasio
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Industrie Magneti Marelli SRL
Marelli Europe SpA
Original Assignee
Industrie Magneti Marelli SRL
Magneti Marelli SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Industrie Magneti Marelli SRL, Magneti Marelli SpA filed Critical Industrie Magneti Marelli SRL
Publication of EP0321416A1 publication Critical patent/EP0321416A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/12—Ignition, e.g. for IC engines

Definitions

  • the present invention relates to an ignition coil, and more specifically to a coil for static-distribution ignition systems for motor vehicles, of the type comprising: a casing of electrically insulating material in which a primary winding and a secondary winding are housed, and connection means for enabling the electrical connection of one end of the secondary winding to a high-tension lead for connection to a plug.
  • connection means comprise: an annular electrical terminal situated around an appendage of the casing and connected to the end of the secondary winding, an electrically insulating cover element mounted for rotation about the appendage of the casing on the annular terminal and carrying a contact member to which one end of the high-tension lead is connected or connectible, the contact member being slidable on the annular terminal due to the rotation of the cover element relative to the casing of the coil, and clamping means for enabling the cover element to be position and retained in any desired angular position relative to the casing.
  • the high-tension lead which represents the outlet of the ignition coil can be oriented in any desired position with obvious advantages in its mounting.
  • an ignition coil intended particularly for use in a static-distribution ignition system for the controlled-ignition internal-combustion engine of a motor vehicle, comprises a casing 1 of electrically insulating material substantially in the form of an inverted cup, within which a magnetic core 3 formed by laminations, for example, of iron-silicon alloy with oriented grains, a secondary winding 3 and, around the latter, a primary winding 4 are arranged coaxially in a known arrangement.
  • An annular skirt 5 of magnetic material, in which the magnetic flux is contained, is arranged around the primary winding ( Figure 2).
  • the other end 3a of the secondary winding 3, as shown in Figure 2 extends through a hole 1a formed in the upper wall of the casing 1.
  • An integral external appendage 10 extends from the central portion of this wall and has a threaded end portion.
  • the upper wall of the casing 1 has an external pair of circular projections 6 and 7 coaxial with the appendage 10, between which a circular groove, indicated 8, is defined.
  • An annular electrical terminal indicated 9, constituted, for example, by a brass ring, is situated around the base of the appendage 10 of the casing 1, inwardly of the ridge 7.
  • the end 3a of the secondary winding 3 of the coil is connected to this annular terminal, for example by soldering.
  • a substantially bell-shaped cover element 12 is mounted for rotation about the appendage 10 of the casing 1 and has a lower flanged portion which bears on the projections 6 and 7 of the casing.
  • the flanged portion of the cover element has an annular projection 13 which extends into the annular groove 8 of the casing.
  • the cover element 12 has a peripheral notch 14 through which a high-tension lead 15 extends for connection to a plug of the ignition system.
  • the end of the lead 15 is connected to a substantially C-shaped contact member 16 ( Figure 2) arranged with its convexity facing the axis of the appendage 10 of the casing 1.
  • a side arm of the member 16 is in contact with the conductor ring 9.
  • the lead 15 is therefore connected to the terminal 3a of the secondary winding through the sliding contact member 16 and the conductor ring 9.
  • the cover element 12 can obviously be arranged in any angular position relative to the casing 1, so that the lead 15 extends in the direction which is most convenient for its mounting and for the wiring.
  • a nut 18 screwed onto the threaded portion of the appendage 10 of the casing of the coil enables the cover element 12 to be clamped in the angular position desired from time to time.
  • the projection 8 of the cover element (which is broken only in correspondence with the passage 14 through which the lead 15 extends) forms, together with the projections 6 and 7 of the casing of the coil, a sort of labyrinth for preventing the penetration of dirt and lengthening the path of any discharge which may be struck between the annular contact 9 and the earth of the motor vehicle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
EP88830507A 1987-12-17 1988-11-29 Bobine d'allumage Withdrawn EP0321416A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT5390087 1987-12-17
IT5390087U 1987-12-17

Publications (1)

Publication Number Publication Date
EP0321416A1 true EP0321416A1 (fr) 1989-06-21

Family

ID=11285875

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88830507A Withdrawn EP0321416A1 (fr) 1987-12-17 1988-11-29 Bobine d'allumage

Country Status (1)

Country Link
EP (1) EP0321416A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0515958B1 (fr) * 1991-05-27 1995-03-15 Hella KG Hueck & Co. Starter haute-tension pour amorcer et alimenter en courant alternatif des lampes à décharge haute-pression sur des véhicules

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2227607A1 (fr) * 1973-04-27 1974-11-22 British Leyland Uk Ltd
US3960427A (en) * 1974-10-31 1976-06-01 I.C.M. Industries, Inc. Retainer for an end fitting of a welding cable

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2227607A1 (fr) * 1973-04-27 1974-11-22 British Leyland Uk Ltd
US3960427A (en) * 1974-10-31 1976-06-01 I.C.M. Industries, Inc. Retainer for an end fitting of a welding cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0515958B1 (fr) * 1991-05-27 1995-03-15 Hella KG Hueck & Co. Starter haute-tension pour amorcer et alimenter en courant alternatif des lampes à décharge haute-pression sur des véhicules

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT SE

17P Request for examination filed

Effective date: 19890527

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19910601