EP0395511A1 - Vorrichtung zur Befestigung einer Zündspule, insbesondere für Brennkraftmaschine eines Kraftfahrzeuges - Google Patents

Vorrichtung zur Befestigung einer Zündspule, insbesondere für Brennkraftmaschine eines Kraftfahrzeuges Download PDF

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Publication number
EP0395511A1
EP0395511A1 EP90401128A EP90401128A EP0395511A1 EP 0395511 A1 EP0395511 A1 EP 0395511A1 EP 90401128 A EP90401128 A EP 90401128A EP 90401128 A EP90401128 A EP 90401128A EP 0395511 A1 EP0395511 A1 EP 0395511A1
Authority
EP
European Patent Office
Prior art keywords
ignition coil
coil
fixing
housing
metal
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
EP90401128A
Other languages
English (en)
French (fr)
Other versions
EP0395511B1 (de
Inventor
Eric Badaud
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 EP0395511A1 publication Critical patent/EP0395511A1/de
Application granted granted Critical
Publication of EP0395511B1 publication Critical patent/EP0395511B1/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
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • 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 multiple ignition coil, in particular for an internal combustion engine of a motor vehicle, an ignition coil of the closed magnetic circuit type, comprising a central core around which the primary and secondary windings are disposed, said magnetic circuit being integrated in a molded plastic case.
  • the magnetic flux return circuit is integrated into the housing by overmolding and constitutes, as it were, the metal frame of the latter.
  • the fixing of such an assembly must therefore be particularly effective and solid so as to be able to withstand all the forces to which the coil is subjected in a vehicle.
  • Such a type of attachment consists in providing holes in the magnetic flux return circuit in which the fixing screws are engaged.
  • this system has several drawbacks: on the one hand, it requires machining of the magnetic flux return circuit and venting part of it, which inevitably causes its oxidation; on the other hand, this attachment forming an integral part of the metal frame of the coil has no flexibility capable of absorbing the significant vibrations to which such an assembly is inevitably subjected in a vehicle in operation, hence a non-negligible risk of breakage of the fixing screws.
  • the present invention makes it possible to solve these problems by proposing a fixing system having both a sufficient mechanical solidity to resist the tearing forces and a certain flexibility to absorb as much as possible the effects due to vibrations.
  • the multiple ignition coil of the kind defined above, is characterized in that the means for fixing the coil consist of metal cores separated from the metal frame of the body and in that they are held by overmolding in appendages of the housing.
  • the metal cores consist of metal inserts whose cylindrical central part is knurled and whose ends are frustoconical.
  • the metal inserts are cylindrical and have in their middle part an annular groove.
  • the single plate is an exploded view of the various constituents making up the double ignition coil according to the invention.
  • the single plate 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 connection plate 28 , we just weld the end of the secondary winding.
  • the low-voltage connection is effected by a connection assembly consisting of a precut link 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.
  • the inserts 13 constitute metal cores completely mechanically separated from the metal frame of the housing 8.
  • these cores or inserts 13 comprise a cylindrical central part 15 which is knurled and frustoconical ends 14 a , 14 b . Knurling allows better attachment of the insulating material of the housing 8 during overmolding.
  • the frustoconical ends 14 a, 14 b allow for immobilization in translation of said cores 13.
  • the cores or inserts 13 ′ have a generally cylindrical shape 15 ′ in which an annular groove 14 ′ is formed for attaching the material of the insulating housing 8 during overmolding.
  • the appendices 11 of the housing 8 being mechanically independent of the rigid part of the housing 8, the means for fixing the coil, thus constituted according to the invention, naturally have a certain flexibility mechanical allowing them to absorb the effects of vibrations without risk of damaging the assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
EP90401128A 1989-04-28 1990-04-25 Vorrichtung zur Befestigung einer Zündspule, insbesondere für Brennkraftmaschine eines Kraftfahrzeuges Expired - Lifetime EP0395511B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8905640 1989-04-28
FR8905640A FR2646549B1 (fr) 1989-04-28 1989-04-28 Dispositif de fixation d'une bobine d'allumage, en particulier pour moteur a combustion interne de vehicule automobile

Publications (2)

Publication Number Publication Date
EP0395511A1 true EP0395511A1 (de) 1990-10-31
EP0395511B1 EP0395511B1 (de) 1994-06-29

Family

ID=9381218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90401128A Expired - Lifetime EP0395511B1 (de) 1989-04-28 1990-04-25 Vorrichtung zur Befestigung einer Zündspule, insbesondere für Brennkraftmaschine eines Kraftfahrzeuges

Country Status (6)

Country Link
US (1) US5032814A (de)
EP (1) EP0395511B1 (de)
JP (1) JPH03129713A (de)
DE (1) DE69010267T2 (de)
ES (1) ES2058838T3 (de)
FR (1) FR2646549B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993013533A1 (en) * 1991-12-23 1993-07-08 Ford Motor Company Limited Ignition coil assembly and method of manufacture thereof
US5295861A (en) * 1991-12-23 1994-03-22 Ford Motor Company Connector for ignition coil assembly
WO1995000961A1 (en) * 1993-06-23 1995-01-05 Ford Motor Company Ignition coil assembly
FR2716238A1 (fr) * 1994-02-17 1995-08-18 Bosch Gmbh Robert Bobine d'allumage pour un moteur à combustion interne comportant un noyau principal entouré par un noyau de refluement.

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0184869B1 (ko) 1989-12-06 1999-05-15 위르겐 호이만 1,4-이치환된 2,6-디플루오로벤젠 화합물 및 액정 매질
US5257611A (en) * 1991-12-23 1993-11-02 Ford Motor Company Ignition coil assembly and method of manufacture thereof
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
JPH09502052A (ja) * 1993-08-26 1997-02-25 フォード モーター カンパニー 点火コイル組立体
US6118362A (en) * 1997-01-24 2000-09-12 Sundstrand Corporation Integrated inductive assembly
US6894597B2 (en) * 2003-02-21 2005-05-17 Delphi Technologies, Inc. Axially potted progressive wound remote mount ignition coil
JP6585411B2 (ja) * 2015-07-29 2019-10-02 株式会社タムラ製作所 インダクタ
JP6585412B2 (ja) * 2015-07-29 2019-10-02 株式会社タムラ製作所 インダクタ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB610241A (en) * 1946-04-02 1948-10-13 Andrew Bryce & Company Ltd W Improvements in and relating to cased transformers, chokes and the like
FR1256436A (fr) * 1960-05-06 1961-03-17 Philips Nv Perfectionnements aux transformateurs noyés dans un matériau isolant
DE3636938A1 (de) * 1986-10-30 1988-05-11 Thomson Cgr Heizwandler fuer einen roentgengenerator
GB2199700A (en) * 1986-12-04 1988-07-13 Nippon Denso Co Ignition coil assembly for internal combustion engines
FR2619164A1 (fr) * 1987-08-06 1989-02-10 Equip Electr Moteur Bobine d'allumage, en particulier pour moteur a combustion interne de vehicule automobile, et element dissipateur de chaleur pour une telle bobine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3400870A1 (de) * 1984-01-12 1985-07-25 Vdo Adolf Schindling Ag, 6000 Frankfurt Induktivgeber

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB610241A (en) * 1946-04-02 1948-10-13 Andrew Bryce & Company Ltd W Improvements in and relating to cased transformers, chokes and the like
FR1256436A (fr) * 1960-05-06 1961-03-17 Philips Nv Perfectionnements aux transformateurs noyés dans un matériau isolant
DE3636938A1 (de) * 1986-10-30 1988-05-11 Thomson Cgr Heizwandler fuer einen roentgengenerator
GB2199700A (en) * 1986-12-04 1988-07-13 Nippon Denso Co Ignition coil assembly for internal combustion engines
FR2619164A1 (fr) * 1987-08-06 1989-02-10 Equip Electr Moteur Bobine d'allumage, en particulier pour moteur a combustion interne de vehicule automobile, et element dissipateur de chaleur pour une telle bobine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993013533A1 (en) * 1991-12-23 1993-07-08 Ford Motor Company Limited Ignition coil assembly and method of manufacture thereof
US5295861A (en) * 1991-12-23 1994-03-22 Ford Motor Company Connector for ignition coil assembly
WO1995000961A1 (en) * 1993-06-23 1995-01-05 Ford Motor Company Ignition coil assembly
FR2716238A1 (fr) * 1994-02-17 1995-08-18 Bosch Gmbh Robert Bobine d'allumage pour un moteur à combustion interne comportant un noyau principal entouré par un noyau de refluement.
US5497756A (en) * 1994-02-17 1996-03-12 Robert Bosch Gmbh Ignition coil for an internal combustion engine
ES2116876A1 (es) * 1994-02-17 1998-07-16 Bosch Gmbh Robert Bobina de encendido para un motor de combustion interna.

Also Published As

Publication number Publication date
ES2058838T3 (es) 1994-11-01
DE69010267D1 (de) 1994-08-04
DE69010267T2 (de) 1995-03-02
FR2646549B1 (fr) 1993-01-08
US5032814A (en) 1991-07-16
FR2646549A1 (fr) 1990-11-02
JPH03129713A (ja) 1991-06-03
EP0395511B1 (de) 1994-06-29

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