EP0072716B1 - Procédé de construction d'une bobine d'allumage pour moteurs à combustion interne - Google Patents

Procédé de construction d'une bobine d'allumage pour moteurs à combustion interne Download PDF

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Publication number
EP0072716B1
EP0072716B1 EP19820401175 EP82401175A EP0072716B1 EP 0072716 B1 EP0072716 B1 EP 0072716B1 EP 19820401175 EP19820401175 EP 19820401175 EP 82401175 A EP82401175 A EP 82401175A EP 0072716 B1 EP0072716 B1 EP 0072716B1
Authority
EP
European Patent Office
Prior art keywords
case
terminal
output terminal
ignition coil
internal combustion
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.)
Expired
Application number
EP19820401175
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0072716A1 (fr
Inventor
Robert Marck
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.)
Ducellier et Cie
Original Assignee
Ducellier et Cie
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 Ducellier et Cie filed Critical Ducellier et Cie
Publication of EP0072716A1 publication Critical patent/EP0072716A1/fr
Application granted granted Critical
Publication of EP0072716B1 publication Critical patent/EP0072716B1/fr
Expired 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
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/10—Connecting leads to windings
    • 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 invention relates to a product for constituting an ignition coil for internal combustion engines, in particular for motor vehicles, coil comprising a closed magnetic circuit around one of the branches of which are disposed a primary winding and a secondary winding housed in a housing filled with a cast insulating material covering the base, with at least one high-voltage output terminal maintained on the housing and comprising a metallic member connected by an electrical connection element, to one of the ends of the secondary winding, which high voltage output terminal provides the link with the ignition distributor, via a conductive cable.
  • the Applicant has found that in such coils if the output terminal is crimped onto a thin insulating plate, snapped into the housing over small portions of its periphery, said thin plate is deformed under the pressure of the electrical connection element produced. in an elastic metallic material which ensures electrical contact, by pressing on the end of the metallic member housed in the high voltage output terminal.
  • the object of the present invention is to remedy this drawback by eliminating the thin plate on which the output terminal was fixed.
  • the subject of the invention is a method of constructing an ignition coil, characterized in that the output terminal maintained on the housing comprises a cam and ramps, which, under the effect of a movement of rotation printed at said terminal, exert a holding pressure, on protuberances formed inside the housing, so as to immobilize the terminal on the housing before and during the casting operation of the insulating material filling the housing.
  • the advantage obtained by this invention consists essentially in that the output terminal being firmly held in its desired position on the housing, the defect in appearance of the ignition coils is eliminated in a safe manner and the manufacturing waste for this defect , are thus deleted.
  • the ignition coil shown in FIGS. 1 and 2 comprises a closed magnetic circuit 1 consisting, in this embodiment of sheets cut and stacked one on the other.
  • Part of the sheets 1a is cut in a known manner, so as to form a circuit with three branches, the other part 1b closes the magnetic circuit in which an air gap 2 is provided.
  • a primary winding 3 wound on a support 4 and a secondary winding 5 wound on a support 6 are housed in a plastic casing 7, then filled with an insulating material 8, cast covering the base of a high voltage output terminal 9 held on the housing 7.
  • the high voltage output terminal 9 made of insulating material is provided with a metallic member 10 which serves to establish a connection, by cable, between the ignition distributor (not shown) and the end 5a of the secondary winding 5 by by means of a connecting element 11 constituted by a thin strip of elastic metallic material ensuring electrical contact, by pressure on the end 10a of the member 10.
  • the primary winding 3 and the secondary winding 5 are connected by one of their ends to a terminal 12 supplying from the on-board battery of the vehicle (not shown), the primary winding 3 being connected, by its other end, to a terminal 13 ensuring the connection with a mechanical or electrical breaker (not shown).
  • the high voltage output terminal 9 comprises a cam 14 (see fig. 2 and 3), the three ramps (15) of which are caused by a rotational movement imparted to said terminal, in the direction of arrow F1, exert a holding pressure on protuberances 16 formed inside the housing 7.
  • the high voltage output terminal 9 is thus immobilized by pressure on the housing 7, in its desired position we can then proceed to the casting operation of the insulating material 8 after which the housing 7 is slid onto the central branch of the sheets 1 a (see FIG. 1) the sheets 1 a and 1 b then being joined together by means of metal plates 17 and rivets 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
EP19820401175 1981-08-19 1982-06-25 Procédé de construction d'une bobine d'allumage pour moteurs à combustion interne Expired EP0072716B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8115903A FR2511732A1 (fr) 1981-08-19 1981-08-19 Bobine d'allumage pour moteurs a combustion interne
FR8115903 1981-08-19

Publications (2)

Publication Number Publication Date
EP0072716A1 EP0072716A1 (fr) 1983-02-23
EP0072716B1 true EP0072716B1 (fr) 1986-11-05

Family

ID=9261554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820401175 Expired EP0072716B1 (fr) 1981-08-19 1982-06-25 Procédé de construction d'une bobine d'allumage pour moteurs à combustion interne

Country Status (5)

Country Link
EP (1) EP0072716B1 (es)
DE (1) DE3276739D1 (es)
ES (1) ES8306223A1 (es)
FR (1) FR2511732A1 (es)
MA (1) MA19566A1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3423524C2 (de) * 1984-06-26 1986-10-02 Bertos AG, Glarus Zündspule
FR2602098B1 (fr) * 1986-07-23 1988-09-16 Ducellier & Cie Connexions electriques du circuit secondaire d'une bobine d'allumage
FR2602099B1 (fr) * 1986-07-23 1988-09-16 Ducellier & Cie Dispositif de raccordement electrique basse tension d'une bobine d'allumage notamment pour moteur a combustion interne de vehicules automobiles
JP2669021B2 (ja) * 1988-12-27 1997-10-27 株式会社デンソー 内燃機関用点火コイル

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1598374A (es) * 1968-12-09 1970-07-06
GB1324639A (en) * 1969-11-17 1973-07-25 Lucas Industries Ltd Electrical connectors
US3846736A (en) * 1972-08-02 1974-11-05 Nicolay Gmbh Insulated electrical conductor for panel mounting
DE2651218C3 (de) * 1976-11-10 1979-07-05 Robert Bosch Gmbh, 7000 Stuttgart Zündspule für Zündeinrichtungen von Brennkraftmaschinen
JPS5688636A (en) * 1979-12-19 1981-07-18 Hitachi Ltd Ring wound armature for synchronous machine

Also Published As

Publication number Publication date
EP0072716A1 (fr) 1983-02-23
ES515072A0 (es) 1983-05-01
FR2511732B1 (es) 1984-03-23
DE3276739D1 (en) 1987-08-13
MA19566A1 (fr) 1983-04-01
FR2511732A1 (fr) 1983-02-25
ES8306223A1 (es) 1983-05-01

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