EP2016653B1 - Bobine d'allumage, en particulier pour un moteur à combustion interne d'un véhicule automobile - Google Patents

Bobine d'allumage, en particulier pour un moteur à combustion interne d'un véhicule automobile Download PDF

Info

Publication number
EP2016653B1
EP2016653B1 EP07727839A EP07727839A EP2016653B1 EP 2016653 B1 EP2016653 B1 EP 2016653B1 EP 07727839 A EP07727839 A EP 07727839A EP 07727839 A EP07727839 A EP 07727839A EP 2016653 B1 EP2016653 B1 EP 2016653B1
Authority
EP
European Patent Office
Prior art keywords
contact
ignition coil
contact sleeve
sleeve
retaining element
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.)
Active
Application number
EP07727839A
Other languages
German (de)
English (en)
Other versions
EP2016653A1 (fr
Inventor
Konstantin Lindenthal
Thomas Breckle
Johannes Kappeler
Holger Raaf
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2016653A1 publication Critical patent/EP2016653A1/fr
Application granted granted Critical
Publication of EP2016653B1 publication Critical patent/EP2016653B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/12—Ignition, e.g. for IC engines
    • H01F2038/122—Ignition, e.g. for IC engines with rod-shaped core
    • 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
    • H01F27/02—Casings
    • H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
    • 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
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • 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
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads

Definitions

  • the invention relates to an ignition coil, in particular for an internal combustion engine of a motor vehicle according to the preamble of claim 1.
  • Such an ignition coil is from the DE 102 51 840 A1 known.
  • the known ignition coil of the end portion of a secondary bobbin is received together with a contact sleeve of a cup-like end portion of a high voltage bolt ( FIG. 4 ).
  • the high-voltage pin protrudes up to a stop on the secondary coil body zoom, which in turn serves as a stop for the contact sleeve.
  • contact sleeve and high-voltage pin end in the same plane.
  • the contact sleeve Since the contact sleeve has relatively sharp corners and edges as a result of their formation as a stamped part, cracks can be caused by these regions during operation of the ignition coil due to the different thermal expansion coefficients of the materials under varying temperatures. If the cracks extend over a larger area in the ignition coil housing, there is a risk of flashovers that affect the functioning of the ignition coil.
  • the ignition coil according to the invention in particular for an internal combustion engine of a motor vehicle, with the features of claim 1 has the advantage that the extent of cracks is limited or limited in thermomechanical stress of the ignition coil. This is achieved according to the invention essentially in that the hold-down element surrounding the contact sleeve projects beyond or covers the contact sleeve that cracks emanating from corners or edges of the contact sleeve still terminate within the hold-down element, and can not expand further outside the hold-down element in the housing of the ignition coil.
  • the ignition coil 10 has an existing plastic, substantially sleeve-shaped housing 11 from.
  • a secondary coil body 13 is inserted with a secondary winding 14.
  • the high voltage carrying secondary winding 14 provides the ignition energy for a spark plug, not shown, of an internal combustion engine.
  • the secondary coil body 13 has a smaller diameter portion 16, on which the one contacting the spark plug one end of the secondary winding 14 is wound.
  • About the end portion 17 of the section 16 is a made of electrically conductive metal contact sleeve 18 is pushed.
  • the contact sleeve 18 has a circular or annular portion 19, emanate from the bent contact tabs 20.
  • the contact sleeve 18 is preferably produced by a stamping process in which the contact tabs 20 are bent from the region 19 after punching.
  • the contact tabs 20 contact areas 21, which after the Sliding the contact sleeve 18 on the end portion 17 of the secondary coil body 13 in register with the arranged in section 16 secondary winding 14 are.
  • the contact tabs 20 are on the side facing away from the region 19 of the contact portions 21 radially bent slightly outwards and end in hold-down sections 22. From area 19 of the contact sleeve 18 protrude at uniform angular intervals in the embodiment, three triangular contact ribs 24 inside.
  • the hold-down element 25 is made in the illustrated embodiment of sheet metal by a non-cutting forming process, and has on the contact sleeve 18 side facing a radially outwardly widening insertion region 26.
  • the material of the hold-down element 25 is flanged so that a rounded inlet edge 27 results without sharp corners or edges.
  • the length of the hold-down element 25 is dimensioned such that when reaching in the FIG. 3 illustrated end position of the hold-down element 25 of the insertion 26 is viewed with its leading edge 27 in the direction of the secondary bobbin 13 behind the contact plates 20.
  • the contact tabs 20 are not only covered by the hold-down element 25, but the hold-down element 25 still extends by a certain length, for example by a third or half the length of the contact tabs 20 beyond the contact tabs 20.
  • a pin-shaped suppression resistor 31 is inserted in the sleeve-shaped end of the end portion 17 of the secondary coil body 13.
  • the interference resistor 31 is integrally connected to a high voltage terminal 32, which in turn electrically contacts the spark plug, not shown.
  • the merging of suppression resistor 31 and secondary coil body 13 takes place when mounted on the secondary coil body 13 contact sleeve 18 and hold-down element 25. In this case, the suppression resistor 31 first passes through an opening 33 of the hold-down element 25 to subsequently penetrate through the annular portion 19 of the contact sleeve 18.
  • the formation of the contact ribs 24th on the region 19 of the contact sleeve 18 is such that the contact ribs 24 come into operative connection with the circumference of the Entstörwiderstands 31 and thereby penetrate the outer protective layer, so that an electrical connection between the contact sleeve 18 and the high voltage terminal 32 via the suppression resistor 31.
  • the housing 11 After mounting the components of the ignition coil 10, the housing 11 is filled with a thermosetting insulating resin, which fills the gaps in the ignition coil 10, and in particular ensures electrical insulation between the voltage-bearing components.
  • This insulating resin inter alia also fills the annular space 35 between the hold-down element 25 and the secondary bobbin 13 ( FIG. 3 ).
  • the contact sleeve 18 Due to the punching process, the contact sleeve 18 usually has a plurality of relatively sharp corners or edges, in particular the contact tabs 22. From these areas, a risk of cracking in the insulating resin is caused by thermomechanical stresses. If these cracks extend between components having different voltage levels, there is the risk of voltage flashovers which impair the function of the ignition coil 10.
  • the hold-down element 25 can not only, as described in the exemplary embodiment, consist of an electrically conductive or non-conductive metal, but can for example also be made of plastic.
  • the hold-down element and the high voltage terminal as a combined, one-piece, consisting of conductive metal component 36 are formed.
  • contact ribs 24a are provided on the contact sleeve 18a, which are arranged radially outwardly projecting on the contact sleeve 18a.
  • the electrical connection is produced in such a way that, when the component 36 is pushed over onto the contact sleeve 18a, the contact ribs 24a make electrical contact with the component 36 on its inner wall.
  • the length of the component 36 such that its insertion 37 clearly overlap the contact tabs 22a of the contact sleeve 18a in the final position of the component 36 and thus emanating from the contact sleeve 18a propagation of cracks in the insulating resin outside of the component 36 can be avoided.

Landscapes

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

Claims (6)

  1. Bobine d'allumage (10), en particulier pour un moteur à combustion interne d'un véhicule automobile, comprenant un enroulement secondaire (14) disposé sur un corps de bobine (13) pour la production d'une haute tension sur une bougie d'allumage, comprenant une douille de contact (18 ; 18a) en contact électrique avec l'enroulement secondaire (14), laquelle peut être glissée sur une région d'extrémité (17) du corps de bobine (13) et comprend au moins un élément de contact (22 ; 22a) pour l'enroulement secondaire (14), et comprenant un élément de retenue (25 ; 36) pouvant être glissé sur la douille de contact (18 ; 18a), lequel agit sur l'au moins un élément de contact (22 ; 22a) de la douille de contact (28 ; 18a), l'élément de retenue (25 ; 36), dans sa position finale, et considéré dans la direction axiale du corps de bobine (13), faisant saillie au-delà de l'au moins un élément de contact (22 ; 22a) de la douille de contact (18 ; 18a) et recouvrant l'au moins un élément de contact (22 ; 22a), caractérisée en ce que la douille de contact (18) comprend au moins un élément de contact (24) faisant saillie radialement vers l'intérieur à partir d'une région annulaire (19) de la douille de contact (18) et en ce que l'au moins un élément de contact (24) est électriquement en connexion fonctionnelle avec une résistance d'anti-parasitage (31) qui pour sa part est connectée à une borne de haute tension (32) pouvant être accouplée à la bougie d'allumage.
  2. Bobine d'allumage selon la revendication 1, caractérisée en ce que l'élément de retenue (25 ; 36) est réalisé de manière arrondie dans sa région d'entrée (26 ; 37) du côté tourné vers le corps de bobine (13).
  3. Bobine d'allumage selon la revendication 2, caractérisée en ce que l'élément de retenue (25) est constitué de métal et en ce que la région d'entrée (26) est réalisée de manière rabattue.
  4. Bobine d'allumage selon l'une quelconque des revendications 1 à 3, caractérisée en ce que l'élément de retenue fait partie intégrante d'une borne de haute tension (36) pour la bougie d'allumage.
  5. Bobine d'allumage selon la revendication 4, caractérisée en ce que la douille de contact (18a) comprend au moins un élément de contact (24a) faisant saillie radialement vers l'extérieur, lequel peut être mis en contact électrique avec la borne de haute tension (36).
  6. Bobine d'allumage selon l'une quelconque des revendications 1 à 5, caractérisée en ce que la douille de contact (18 ; 18a) comprend des contacts (22 ; 22a) de type languette pour l'enroulement secondaire (14), et en ce que l'élément de retenue (25 ; 36), dans sa position finale, et considéré dans la direction du corps de bobine (13), dépasse au-delà des contacts (22 ; 22a), en particulier en ce que la région de l'élément de retenue (25 ; 36) dépassant au-delà des contacts (22 ; 22a) dépasse au-delà des contacts (22 ; 22a) d'un tiers jusqu'à la moitié de leur longueur.
EP07727839A 2006-05-02 2007-04-05 Bobine d'allumage, en particulier pour un moteur à combustion interne d'un véhicule automobile Active EP2016653B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006020170A DE102006020170A1 (de) 2006-05-02 2006-05-02 Zündspule, insbesondere für eine Brennkraftmaschine eines Kraftfahrzeugs
PCT/EP2007/053371 WO2007125008A1 (fr) 2006-05-02 2007-04-05 Bobine d'allumage, en particulier pour un moteur à combustion interne d'un véhicule automobile

Publications (2)

Publication Number Publication Date
EP2016653A1 EP2016653A1 (fr) 2009-01-21
EP2016653B1 true EP2016653B1 (fr) 2013-02-13

Family

ID=38255112

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07727839A Active EP2016653B1 (fr) 2006-05-02 2007-04-05 Bobine d'allumage, en particulier pour un moteur à combustion interne d'un véhicule automobile

Country Status (6)

Country Link
US (1) US8439023B2 (fr)
EP (1) EP2016653B1 (fr)
JP (1) JP4881431B2 (fr)
CN (1) CN101432937B (fr)
DE (1) DE102006020170A1 (fr)
WO (1) WO2007125008A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4701835B2 (ja) 2004-07-27 2011-06-15 株式会社デンソー スティック形点火コイル
US9356433B2 (en) 2012-05-10 2016-05-31 Denso International America, Inc. Ignition coil captured resistor
DE102012221897A1 (de) * 2012-11-29 2014-06-05 Robert Bosch Gmbh Elektrische Kontaktanordnung zur Kontaktierung einer Spule

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3716038A (en) * 1971-03-31 1973-02-13 Motorola Inc High voltage coil boot
DE3830763C2 (de) * 1988-09-09 1998-04-09 Siemens Ag Elektrische Verbindungsvorrichtung
JP3473817B2 (ja) * 1996-10-18 2003-12-08 株式会社デンソー 内燃機関用点火コイル
JP3709934B2 (ja) * 1996-10-18 2005-10-26 株式会社デンソー 内燃機関用点火コイル
JPH10149933A (ja) * 1996-11-19 1998-06-02 Hitachi Ltd 点火コイル及びこれを用いた内燃機関
JPH11238637A (ja) * 1998-02-23 1999-08-31 Toyota Motor Corp 点火装置
JPH11265832A (ja) * 1998-03-17 1999-09-28 Toyota Motor Corp 内燃機関用点火コイル
JP4051591B2 (ja) * 1999-07-08 2008-02-27 株式会社デンソー 点火コイル
US6178957B1 (en) * 1999-09-08 2001-01-30 Visteon Global Technologies, Inc. Pencil ignition coil assembly module
US6522232B2 (en) * 2001-04-26 2003-02-18 Delphi Technologies, Inc. Ignition apparatus having reduced electric field HV terminal arrangement
JP4032692B2 (ja) * 2001-10-16 2008-01-16 株式会社デンソー 点火コイル
JP3918610B2 (ja) * 2002-04-01 2007-05-23 株式会社デンソー 内燃機関用点火装置
DE10251841A1 (de) * 2002-11-07 2004-05-19 Robert Bosch Gmbh Elektrische Kontaktierung dünner Lackdrähte von Sekundärwicklungen von Zündspulen
DE10251840A1 (de) 2002-11-07 2004-05-19 Robert Bosch Gmbh Elektrische Kontaktierung dünner Lackdrähte von Sekundärwicklungen von Zündspulen
DE10304138B3 (de) * 2003-02-03 2004-07-15 Robert Bosch Gmbh Zündspule mit einer Verbindungseinrichtung zur Kontaktierung mit einer Zündkerze
DE102004002935A1 (de) 2004-01-21 2005-08-11 Robert Bosch Gmbh Elektrische Kontaktierung dünner Lackdrähte von Sekundärwicklungen von Zündspulen mit Kontaktkrone und Kontaktelement
DE102004003216B3 (de) * 2004-01-22 2005-08-25 Era Ag Zündspule für eine Brennkraftmaschine
US7142080B2 (en) * 2004-02-09 2006-11-28 Denso Corporation Stick-type ignition coil and terminal assembly therefor
JP4701835B2 (ja) 2004-07-27 2011-06-15 株式会社デンソー スティック形点火コイル
JP4064382B2 (ja) * 2004-08-03 2008-03-19 阪神エレクトリック株式会社 内燃機関用点火コイル

Also Published As

Publication number Publication date
US20090301450A1 (en) 2009-12-10
CN101432937A (zh) 2009-05-13
EP2016653A1 (fr) 2009-01-21
JP2009535828A (ja) 2009-10-01
WO2007125008A1 (fr) 2007-11-08
DE102006020170A1 (de) 2007-11-08
JP4881431B2 (ja) 2012-02-22
US8439023B2 (en) 2013-05-14
CN101432937B (zh) 2012-06-27

Similar Documents

Publication Publication Date Title
EP3022804B1 (fr) Dispositif de mise en contact électrique d'un blindage de câble électrique avec un boîtier, et câble électrique préfabriqué
DE102009035897B4 (de) Zündkerze sowie Zündanordnung umfassend eine Zündspule und -kerze
EP3608521B1 (fr) Tige de soutien et catalyseur
EP2165070B1 (fr) Bobine d'allumage
WO2012095252A1 (fr) Bobine d'allumage, en particulier pour moteurs de petites dimensions
EP3363064B1 (fr) Pôle de batterie et unité de contact électrique pour établir une connexion électrique entre un pôle de batterie et le système électrique d'un véhicule
EP2016653B1 (fr) Bobine d'allumage, en particulier pour un moteur à combustion interne d'un véhicule automobile
EP2050171B1 (fr) Bougie d'allumage a espace de montage reduit
WO2017121524A1 (fr) Bougie d'allumage comprenant une encoche ou une rainure dans l'isolateur ou dans le boîtier
EP1563520B1 (fr) Etablissement d'un contact electrique entre des fils laques fins d'enroulements secondaires de bobines d'allumage
EP1563519B1 (fr) Mise en contact electrique de fils laques fins d'enroulements secondaires de bobines d'allumage
DE102004007357B4 (de) HF-Steckkontakt mit einer Crimphülse und Crimphülse für einen HF-Steckkontakt
EP2761710B1 (fr) Bougie d'allumage améliorée
DE10004313B4 (de) Dieselkraftstoff-Einspritzdüse
DE10020558C1 (de) Glühstift
DE102015101568A1 (de) Koronazündeinrichtung mit einer Abschirmung aus Schalenelemen
DE102016211166A1 (de) Metallglühstiftkerze und Dichtungskörper dafür
DE29520528U1 (de) Verbindungsvorrichtung für Zündanlagen von Kraftfahrzeugen
DE102008040285A1 (de) Bauraumoptimierte Zündkerze
DE102020211352A1 (de) Vorkammerzündkerze mit verbesserter Masseelektrode
DE29617417U1 (de) Stabspule für Zündanlagen
DE102018125456A1 (de) Zündkerze sowie Verfahren zum Herstellen einer Elektrode
DE102018110580A1 (de) Zündkerze für eine Brennkraftmaschine
DE1121149B (de) Loesbare Verbindung fuer zwei elektrische Leiter
DE102004049287A1 (de) Verbindung einer Zündkerze mit einer Zündspule

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

17P Request for examination filed

Effective date: 20081202

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

RBV Designated contracting states (corrected)

Designated state(s): DE

17Q First examination report despatched

Effective date: 20100806

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502007011298

Country of ref document: DE

Effective date: 20130404

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20131114

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502007011298

Country of ref document: DE

Effective date: 20131114

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20250624

Year of fee payment: 19