EP0395512A1 - Zündspule, insbesondere für Brennkraftmaschinen eines Kraftfahrzeuges und Mittel zur Sicherung des primären Zusammenbaus innerhalb des sekundären - Google Patents

Zündspule, insbesondere für Brennkraftmaschinen eines Kraftfahrzeuges und Mittel zur Sicherung des primären Zusammenbaus innerhalb des sekundären Download PDF

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Publication number
EP0395512A1
EP0395512A1 EP90401129A EP90401129A EP0395512A1 EP 0395512 A1 EP0395512 A1 EP 0395512A1 EP 90401129 A EP90401129 A EP 90401129A EP 90401129 A EP90401129 A EP 90401129A EP 0395512 A1 EP0395512 A1 EP 0395512A1
Authority
EP
European Patent Office
Prior art keywords
primary
coil
assembly
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.)
Granted
Application number
EP90401129A
Other languages
English (en)
French (fr)
Other versions
EP0395512B1 (de
Inventor
Dominique Vialaneix
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.)
Sagem SA
Original Assignee
Sagem Allumage SA
Valeo Electronique SA
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 Sagem Allumage SA, Valeo Electronique SA filed Critical Sagem Allumage SA
Publication of EP0395512A1 publication Critical patent/EP0395512A1/de
Application granted granted Critical
Publication of EP0395512B1 publication Critical patent/EP0395512B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
    • H01F2005/022—Coils wound on non-magnetic supports, e.g. formers wound on formers with several winding chambers separated by flanges, e.g. for high voltage applications
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
    • H01F2005/025—Coils wound on non-magnetic supports, e.g. formers wound on coaxial arrangement of two or more formers

Definitions

  • the present invention relates in particular to an ignition coil, in particular for an internal combustion engine of a motor vehicle.
  • Such a coil generally comprises at least one magnetic assembly of the closed circuit type, each comprising a central magnetic core around which two coils of plastic material carrying the primary and secondary windings are arranged coaxially, this assembly being integrated in an overmolded housing.
  • a magnetic flux return circuit which constitutes the metal frame thereof. Synthetic resin, poured inside the housing secures and electrically insulates between them the various elements constituting the ignition coil.
  • the assembly of the primary assembly in the secondary assembly must be carried out in a precise manner so that the spacings in all directions between primary and secondary are perfectly dimensioned.
  • Another problem to be resolved is to keep the primary assembly in place in the secondary so that, when the resin is injected into the housing, the primary assembly retains its position relative to the secondary assembly.
  • the present invention solves these problems.
  • the ignition coil, object of the invention comprising at least one magnetic assembly each comprising a central magnetic core around which are coaxially arranged two primary and secondary coils carrying the primary and secondary windings respectively, holding means capable of positioning and fix the primary winding in the secondary winding, is characterized in that the holding means consist of redents formed of material inside the secondary winding cooperating with one of the end flanges of the primary winding.
  • these holding means are associated with complementary means comprising bosses formed of material on the other flange of the primary winding cooperating with notches provided on an end flange of the secondary winding.
  • FIG. 1 represents an exploded view of the various elements of an ignition coil 1 for an internal combustion engine of a motor vehicle.
  • Each magnetic circuit is closed and has a primary winding 2 wound around a reel 3.
  • a central magnetic core 4 of rectangular outline and generally composed of cut and laminated magnetic sheets is housed inside the reel 3.
  • the secondary assembly S is held in lift on and around the primary assembly P.
  • each of these terminals is intended to be connected in a conventional manner, by an appropriate cable, to a spark plug associated with each cylinder of the engine.
  • Each high-voltage terminal B1, B2, B3, B4 comprises a high-voltage pad 30 which is fixed by screwing in a connection plate 28, previously inserted in a groove 26 of the coil 5. On one end of this connecting plate 28, the end of the secondary winding is welded.
  • the low-voltage connection is effected by a connection assembly consisting of a precut connection bar 61 which is inserted into a connector 60.
  • the primary P and secondary S assemblies being assembled one inside the other, the two magnetic circuits M1 and M2 thus formed are introduced into the housing 7 of a housing 8 made of insulating material.
  • a magnetic flux return circuit 9 the general U shape of which can be seen, consisting of cut and laminated magnetic sheets, is incorporated by molding in the housing 8.
  • the magnetic flux return circuits 9 constitute the metal frame of the housing 8.
  • FIG. 3 showing the secondary assembly S which consists of the coil 5 made by molding plastic material having at each of its ends a flange 20,21 and over the entire outer periphery of the tubular means constituting the secondary coil 5, a plurality of discs 22 compartmentalizing said spool.
  • Two wires, wound on the spool 5, constitute the secondary windings 6.
  • the discs 22 make it possible to maintain the wires constituting the windings 6 stacked over a large thickness.
  • the secondary winding 5 comprises a tubular housing 56 intended to receive the primary assembly P.
  • each primary assembly P has been shown ready to be assembled with the corresponding secondary assembly S by entering them in the direction indicated by the arrows F1, F2.
  • Each primary coil 3 has two end flanges 40,41.
  • flange 40 on the flange 40 are provided in material complementary means comprising two bosses 50, 52 of generally rectangular shape, a lateral part 52 protruding from each of the vertical walls of the flange 40.
  • the walls of the flange 41 of the primary coil 3 cooperate with the walls of the housing 56, then pass through the redents 57 , 58 thanks to their elasticity, immobilizing in translation the primary assembly P.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
EP90401129A 1989-04-28 1990-04-25 Zündspule, insbesondere für Brennkraftmaschinen eines Kraftfahrzeuges und Mittel zur Sicherung des primären Zusammenbaus innerhalb des sekundären Expired - Lifetime EP0395512B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR898905641A FR2646550B1 (fr) 1989-04-28 1989-04-28 Bobine d'allumage, en particulier pour moteur a combustion interne de vehicule automobile, et moyens de maintien de l'ensemble primaire dans le secondaire
FR8905641 1989-04-28

Publications (2)

Publication Number Publication Date
EP0395512A1 true EP0395512A1 (de) 1990-10-31
EP0395512B1 EP0395512B1 (de) 1994-04-06

Family

ID=9381219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90401129A Expired - Lifetime EP0395512B1 (de) 1989-04-28 1990-04-25 Zündspule, insbesondere für Brennkraftmaschinen eines Kraftfahrzeuges und Mittel zur Sicherung des primären Zusammenbaus innerhalb des sekundären

Country Status (6)

Country Link
US (1) US5015984A (de)
EP (1) EP0395512B1 (de)
JP (1) JPH03129714A (de)
DE (1) DE69007844T2 (de)
ES (1) ES2055359T3 (de)
FR (1) FR2646550B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4406068A1 (de) * 1993-07-09 1995-01-19 Mitsubishi Electric Corp Zündspule

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5271373A (en) * 1990-05-15 1993-12-21 Mitsubishi Denki Kabushiki Kaisha Ignition coil device for an internal combustion engine
US5444427A (en) * 1992-09-24 1995-08-22 Toyo Denso Kabushiki Kaisha Ignition coil device for engine
JP3188962B2 (ja) * 1992-09-24 2001-07-16 東洋電装株式会社 エンジンの点火コイル装置
DE69414862T2 (de) * 1993-08-26 1999-04-29 Ford Werke Ag Verfahren zur herstellung einer zuendspulenanordnung
AU4617696A (en) * 1995-02-15 1996-09-04 Electronic Craftsmen Limited Transformer and method of assembly
US6118362A (en) * 1997-01-24 2000-09-12 Sundstrand Corporation Integrated inductive assembly
US6169801B1 (en) 1998-03-16 2001-01-02 Midcom, Inc. Digital isolation apparatus and method
JP2000012350A (ja) * 1998-06-22 2000-01-14 Koito Mfg Co Ltd 変圧器
US6344786B1 (en) * 2000-10-06 2002-02-05 Artesyn Technologies, Inc. Telescoping bobbin
US6806803B2 (en) * 2002-12-06 2004-10-19 Square D Company Transformer winding
US6894597B2 (en) * 2003-02-21 2005-05-17 Delphi Technologies, Inc. Axially potted progressive wound remote mount ignition coil
DE112010005769B4 (de) * 2010-07-26 2015-02-19 Mitsubishi Electric Corporation Transformator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2006736A1 (de) * 1970-02-14 1971-08-26 Nordmende Netztransformator mit uberschlagssicher bemessenen Wickelkorpern
EP0138014A1 (de) * 1983-10-01 1985-04-24 GRUNDIG E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co. KG. Kammerspulenkörper
DE3433700A1 (de) * 1984-09-13 1986-03-20 Siemens AG, 1000 Berlin und 8000 München Wickelkoerper fuer einen elektrischen uebertrager
EP0230811A2 (de) * 1986-01-24 1987-08-05 Valeo Electronique Zündspule mit geschlossenem magnetischem Kreis
GB2199700A (en) * 1986-12-04 1988-07-13 Nippon Denso Co Ignition coil assembly for internal combustion engines

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7204034A (de) * 1972-03-25 1973-09-27
FR2422236A1 (fr) * 1978-04-05 1979-11-02 Jeumont Schneider Carcasse de transformateur et transformateur comportant une telle carcasse
DE2838174A1 (de) * 1978-09-01 1980-03-13 Philips Patentverwaltung Hochspannungsspule fuer einen hochspannungstransformator
US4250479A (en) * 1979-04-09 1981-02-10 Hewlett-Packard Company Transformer bobbin assembly
FR2602086B1 (fr) * 1986-07-23 1989-04-07 Ducellier & Cie Element expansible pour bobine d'allumage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2006736A1 (de) * 1970-02-14 1971-08-26 Nordmende Netztransformator mit uberschlagssicher bemessenen Wickelkorpern
EP0138014A1 (de) * 1983-10-01 1985-04-24 GRUNDIG E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co. KG. Kammerspulenkörper
DE3433700A1 (de) * 1984-09-13 1986-03-20 Siemens AG, 1000 Berlin und 8000 München Wickelkoerper fuer einen elektrischen uebertrager
EP0230811A2 (de) * 1986-01-24 1987-08-05 Valeo Electronique Zündspule mit geschlossenem magnetischem Kreis
GB2199700A (en) * 1986-12-04 1988-07-13 Nippon Denso Co Ignition coil assembly for internal combustion engines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4406068A1 (de) * 1993-07-09 1995-01-19 Mitsubishi Electric Corp Zündspule

Also Published As

Publication number Publication date
DE69007844D1 (de) 1994-05-11
US5015984A (en) 1991-05-14
FR2646550B1 (fr) 1994-03-04
JPH03129714A (ja) 1991-06-03
ES2055359T3 (es) 1994-08-16
DE69007844T2 (de) 1994-10-20
FR2646550A1 (fr) 1990-11-02
EP0395512B1 (de) 1994-04-06

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