EP0255409B1 - Elektrische Verbindungen des Sekundärkreises einer Zündspule - Google Patents

Elektrische Verbindungen des Sekundärkreises einer Zündspule Download PDF

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Publication number
EP0255409B1
EP0255409B1 EP87401243A EP87401243A EP0255409B1 EP 0255409 B1 EP0255409 B1 EP 0255409B1 EP 87401243 A EP87401243 A EP 87401243A EP 87401243 A EP87401243 A EP 87401243A EP 0255409 B1 EP0255409 B1 EP 0255409B1
Authority
EP
European Patent Office
Prior art keywords
metal
high voltage
ignition coil
voltage output
hook
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 - Lifetime
Application number
EP87401243A
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English (en)
French (fr)
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EP0255409A1 (de
Inventor
Francis Savelli
Gilbert Vuadens
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.)
Equipements Electriques Moteur SA
Original Assignee
Valeo Electronique SA
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Publication date
Application filed by Valeo Electronique SA filed Critical Valeo Electronique SA
Publication of EP0255409A1 publication Critical patent/EP0255409A1/de
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
    • 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 in particular for an internal combustion engine of a motor vehicle, of the type with closed magnetic circuit generally consisting of a filling of cut sheets and insulated therebetween by a layer of varnish or a sheet of insulating paper.
  • This magnetic circuit is generally composed of a central magnetic core, around which the primary and secondary coils are arranged coaxially, consisting of two coils, one primary, the other secondary, both made by plastic molding, which carry respectively the primary winding and the secondary winding (s), depending on whether it is an ignition coil with one or more secondary outputs.
  • a double magnetic flux return circuit is arranged on either side of the central magnetic core.
  • the assembly thus formed is then inserted into a housing produced by plastic molding, the various electrical connections of the ignition coil having been previously made, a synthetic resin is poured into the housing of the ignition coil, electrically insulating and joining together the various elements constituting the ignition coil, after hardening of said synthetic resin.
  • a synthetic resin is poured into the housing of the ignition coil, electrically insulating and joining together the various elements constituting the ignition coil, after hardening of said synthetic resin.
  • Such a coil is for example already known from document FR-A-86 03 136.
  • the magnetic circuit, the coils and the high-voltage output (s) will be assembled outside the ignition coil housing in order to easily make the electrical connections most often using "wires". ruffles ".
  • connection plugs fixed on the primary coil of the ignition coil and at one of the ends of which are connected the ends of the wire constituting the primary winding are plugged into a connector fixed to the wall of the plastic housing, connector passing through said wall, simultaneously with the insertion of the preassembled elements into said plastic housing.
  • the object of the present invention relates to an ignition coil, in particular for an internal combustion engine of a motor vehicle of the closed magnetic circuit type, generally consisting of a central magnetic core around which the primary and secondary coils carrying the windings are arranged.
  • primary and secondary which are respectively connected to a primary connector and a high voltage output, and a double magnetic flux return circuit arranged on either side of the central magnetic core, the whole being embedded in a resin synthetic after insertion into a plastic casing, and more particularly means for electrical connection of the secondary winding to said high voltage output, consisting of a metal pin partially housed in a plastic chimney, said connection means being arranged in such as to make the electrical connection prior to insertion of the assembly thus constituted in the ignition coil housing, the electrical connection means being constituted inter alia of a metal clip in the form of a pin which has a of its branches connected to the end of the secondary winding and its other branch in electrical connection with the metal pin of the high-voltage output, characterized in that the metal clip is held captive on one of the end
  • the high-voltage chimney carrying the metal pin is held in position on one of the end flanges of the secondary coil so that the axis of the metal pin fictitiously cuts one of the branches of the metal clip, the electrical connection between one of the branches of the metal clip and said metal pin of the high voltage output is made using a metal bar.
  • the metal bars have at one of their ends an eyelet which is placed around the lower end of the metal pins, which are indexed relative to the high-voltage chimney by means of a tongue formed on the end eyelet of the metal pin, tongue coming position in a blind hole made in the chimney of the high voltage outlet.
  • the secondary coil 1 provided with one of its high voltage outputs 20, shown in Figures 1 and 2, consists of a coil 2 produced by molding of plastic material having at each of its ends a flange 4 and 5 and between these flanges 4 and 5 and over the entire outer periphery of the tubular hub constituting the secondary winding 2, a plurality of discs 13, compartmentalizing the secondary winding 2.
  • Two wires, wound on the secondary winding 2 constitute the secondary windings 3.
  • the discs 13 allow maintain the son constituting the windings 3 stacked over a significant thickness.
  • Two high voltage outputs 20 each consist of a chimney 21 of plastic material into which a metal pin 22 is inserted.
  • the guide 23 is symmetrical with respect to the axis B, while the elastic tongue 11 only cooperates with one of the sides of the guide 23, this in order to have only one type of chimney 21 regardless of the side on which the high voltage chimney 21 is mounted.
  • Each of the end flanges 4 and 5 comprises, in one piece, a stirrup 6.
  • a metal clip 30 is placed in a cavity 8 formed on the flange 4 and slid in the direction A to be inserted in the stirrup 6 until it snaps onto the pin 9 made of material with the plastic material coil 2.
  • the metal clip 30 is thus held in this position, each of the branches 30 a and 30 b of the metal clip 30 being directed towards the outside of the periphery of said secondary coil 2.
  • the same operation is then repeated on the flange 5, then one of the ends of each of the secondary windings 3 is connected to one of the ends 30 a or 30 b of each of the metal staples 30.
  • metal bars 31 and 32 having at one of their ends an eyelet 33, are placed on the metal pins 22 so that a metal tongue 34 formed on the eyelet 33 of the metal bars 31 and 32 is placed in a blind hole 25 made in the high-voltage chimney 21 so that the metal bars 31 and 32 do not pivot around the axis of the metal pin 22 so that the other end of the metal bars 31 and 32 comes into contact with one of the ends 30 a or 30 b of the metal clip 30.
  • the assembly thus formed is mounted with the primary coil and the magnetic circuit, and inserted into a plastic casing before pouring synthetic resin therein which will isolate and secure together the various elements constituting the ignition coil.
  • the metal bars 31 and 32 are indexed with respect to the high voltage chimney 21 so that said metal bars 31 and 32 are positioned at a sufficient distance from the secondary windings 3 so as to avoid the formation of electric arcs between said metal bars 31 and 32 and said secondary windings 3, which would lead to immediate destruction of the ignition coil.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Claims (5)

  1. Zündspule, insbesonders für einen Kraftfahrzeug-Verbrennungsmotor, in der Bauart mit geschlossenemmagnetischem Kreis, allgemein bestehend aus einem zentralenmagnetkern, um den der primäre und der sekundäre Wickelkörper (2) angeordnet sind, welche die Primär- und Sekundärwicklungen (3) tragen, wobei dieselben jeweils mit einem Steckverbinder primärseitig und einem Hochspannungsausgang (20) verbunden sind, und aus einer doppelten Magnetflußrückkreis, die auf beiden Seiten des zentralen Magnetkerns angeordnet ist, wobei die Konstruktion nach dem Einsetzen in ein Kunststoffgehäuse in ein Kunstharz eingebettet wird, und insbesondere Mitteln zum elektrischen Anschluß der Sekundärwicklung (3) an den besagten Hochspannungsausgang (20), bestehend aus einer teilweise in einer Kunststoffbuchse (21) gelagerten Metallspindel (22), wobei diese Anschlußmittel in einer solchen Weise angeordnet sind, daß die elektrische Verbindung vor dem Einsetzen der so gebildeten Konstruktion in das Gehäuse der Zündspule hergestellt wird, wobei die Mittel für den elektrischen Anschluß unter anderem aus einer Metallklammer (30) in Form einer Haarnadel bestehen, deren einer Arm (30a, 30b) mit dem Ende der Sekundärwicklung (3) verbunden ist und deren anderer Arm (30a, 30b) sich in elektrischer Verbindung mit der Metallspindel (22) des Hochspannungsausgangs (20) befindet, dadurch gekennzeichnet, daß die Metallklammer (30) auf einem der Endflansche (4) oder (5) des Sekundärwickelkörpers festgehalten wird, und zwar mittels eines Bügels (6), der einstückig mit dem Wickelkörper gefertigt ist und in den ein Arm (30a, 30b) der Metallklammer (30) eingeführt ist, und mittels einer Noppe (9), die in elastischer Weise in den mittleren Teil der besagten Klammer einrastet, wobei die Arme (30a, 30b) der Klammer zur Außenseite des Umfangs des besagten Sekundärwickelkörpers (2) hin ausgerichtet werden.
  2. Zündspule nach Anspruch 1, dadurch gekennzeichnet, daß die Hochspannungsbuchse (21), welche die Metallspindel (22) trägt, auf einem der Endflansche (4) des Sekundärwickelkörpers (2) in einer solchen Stellung gehalten wird, daß die Achse der Metallspindel (22) in fiktiver Weise einen der Arme (30a, 30b) der Matallklammer (30) schneidet.
  3. Zündspule nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die elektrische Verbindung zwischen einem der Arme (30a, 30b) der Metallklammer (30) und der Metallspindel (22) des Hochspannungsausgangs (20) mit Hilfe eines Metallstegs (31) oder (32) hergestellt wird.
  4. Zündspule nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die Metallstege (31) und (32) an einem ihrer Enden eine Öse (33) aufweisen, die um das untere Ende der Metallspindel (22) zu liegen kommt.
  5. Zündspule nach den Ansprüchen 2 bis 4, dadurch gekennzeichnet, daß Mittel zur Positionierung zwischen dem Metallsteg (22) und dem Hochspannungsausgang (20) vorgesehen sind, die aus einem an der Endöse (33) des Metallstegs (31) oder (32) befindlichen Zapfen (34) bestehen, welcher Zapfen (34) in einem in der Buchse (21) des Hochspannungsausgangs (20) ausgeführten Sackloch (25) positioniert wird.
EP87401243A 1986-07-23 1987-06-04 Elektrische Verbindungen des Sekundärkreises einer Zündspule Expired - Lifetime EP0255409B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8610662 1986-07-23
FR8610662A FR2602098B1 (fr) 1986-07-23 1986-07-23 Connexions electriques du circuit secondaire d'une bobine d'allumage

Publications (2)

Publication Number Publication Date
EP0255409A1 EP0255409A1 (de) 1988-02-03
EP0255409B1 true EP0255409B1 (de) 1992-03-11

Family

ID=9337649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87401243A Expired - Lifetime EP0255409B1 (de) 1986-07-23 1987-06-04 Elektrische Verbindungen des Sekundärkreises einer Zündspule

Country Status (4)

Country Link
EP (1) EP0255409B1 (de)
DE (1) DE3777276D1 (de)
ES (1) ES2030438T3 (de)
FR (1) FR2602098B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655474B1 (fr) * 1989-12-06 1992-04-24 Valeo Electronique Connectique basse-tension d'une bobine d'allumage, en particulier pour moteur a combustion interne de vehicule automobile.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2595415A3 (fr) * 1986-03-06 1987-09-11 Ducellier & Cie Circuit magnetique loge dans un boitier de bobine d'allumage pour moteur a combustion interne

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1328588A (en) * 1971-12-08 1973-08-30 Ford Motor Co Ignition coil for an internal combustion engine
FR2511732A1 (fr) * 1981-08-19 1983-02-25 Ducellier & Cie Bobine d'allumage pour moteurs a combustion interne

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2595415A3 (fr) * 1986-03-06 1987-09-11 Ducellier & Cie Circuit magnetique loge dans un boitier de bobine d'allumage pour moteur a combustion interne

Also Published As

Publication number Publication date
DE3777276D1 (de) 1992-04-16
EP0255409A1 (de) 1988-02-03
FR2602098B1 (fr) 1988-09-16
FR2602098A1 (fr) 1988-01-29
ES2030438T3 (es) 1992-11-01

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