EP1709650A1 - Mise en contact electrique de minces fils laques d'enroulements secondaires de bobines d'allumage au moyen d'une couronne de contact et d'un element de contact - Google Patents

Mise en contact electrique de minces fils laques d'enroulements secondaires de bobines d'allumage au moyen d'une couronne de contact et d'un element de contact

Info

Publication number
EP1709650A1
EP1709650A1 EP04804775A EP04804775A EP1709650A1 EP 1709650 A1 EP1709650 A1 EP 1709650A1 EP 04804775 A EP04804775 A EP 04804775A EP 04804775 A EP04804775 A EP 04804775A EP 1709650 A1 EP1709650 A1 EP 1709650A1
Authority
EP
European Patent Office
Prior art keywords
contact
contact element
primary
secondary winding
ignition coil
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
EP04804775A
Other languages
German (de)
English (en)
Other versions
EP1709650B1 (fr
Inventor
Bernd Fischer
Klaus Lerchenmueller
Konstantin Lindenthal
Thomas Breckle
Juergen Raedler
Werner Steinberger
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 EP1709650A1 publication Critical patent/EP1709650A1/fr
Application granted granted Critical
Publication of EP1709650B1 publication Critical patent/EP1709650B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads

Definitions

  • the invention relates to an electrical connection arrangement for producing an ignition coil, in particular a pencil ignition coil with an ignition coil rod with a high-voltage outlet and a low-voltage outlet.
  • Ignition coils generate high voltage sparks. In the case of the spark plug arranged on the ignition coil, this jumps over to its electrodes and thus ignites the air-gasoline mixture of an internal combustion engine, for example. In the
  • this spark plug is supplied with a high-voltage ignition coil.
  • Secondary winding provided. One end of the primary winding is coupled to an ignition starter switch, and the other end is connected to a so-called breaker.
  • the secondary winding i.e. the winding that is responsible for the ignition spark
  • the secondary winding is inside the ignition coil with one End of the primary winding connected so that it is connected to ground.
  • the other end of the secondary winding is connected to the high-voltage outlet, which in turn is either connected to an ignition cable leading to the spark plug or on which the spark plug is arranged directly.
  • the secondary winding itself consists of a thin wire, which is coated with a corresponding lacquer layer, in order to avoid contacting the individual wires when wrapping a specific carrier body or coil former. After the secondary windings have been wound on a carrier, the ends of the respective wires are contacted.
  • thermal contacting methods are generally known, for example soldering or welding.
  • the object of the invention is to produce a connection arrangement between an ignition coil rod, an ignition coil and a secondary or primary winding, which is inexpensive and easy to implement.
  • the "cold" contacting method proposed here has the advantage over the previous method that no additional system costs are necessary. Furthermore, assembly steps are reduced and a reduction in exclusion parts can also be recorded by the embodiment according to the invention.
  • Another important advantage of the invention is that no installation space has to be optimized to carry out the contacting. This means that there is no free space in the area of contacting e.g. must be kept for welding guns, soldering irons or the like.
  • the invention provides for a contact element to be inserted via guide means.
  • the contact element is designed in such a way that one end is fanned out like a tulip in the sliding direction and thus slides over the primary winding, which is arranged on the coil former, during the sliding on.
  • the other end is designed such that it can be fixed in a pocket.
  • the contact element additionally has a sliding surface which points to the primary winding.
  • the contact element presses with its sliding surface against the insulated wires of the coil body, whereby the insulation is broken at the corresponding contact points, so that electrical contact can be established between the individual wires of the coil body and the contact element.
  • the contact element is preferably designed such that it has a waist to achieve its mechanical spring-like properties.
  • the contact elements configured according to the invention are combined to form a contact crown.
  • the individual contact elements according to the invention are fixed to a ring element on their side facing away from the sliding surface.
  • This contact crown preferably consists of a one-piece part, it being conceivable that the contact crown can be produced in a single operation (stamping and bending).
  • the individual contact elements slide on the surface of the winding while the contact crown is being pushed onto the secondary windings.
  • the tulip-like design of the contact crown prevents the windings from being displaced or damaged.
  • the position of the contact crown is defined by a stop which is at the same time receiving the end of the secondary winding in the formation of a connecting post. This is also caused by the fact that the diameter of the contact beads is larger than the secondary coil former plus twice the diameter of the secondary winding.
  • a ring element is pushed over the contact crown, through which an interference fit of the contact element on the secondary winding and thus contact of the contact elements of the contact crown with the secondary winding is achieved.
  • Fig. 1 is a perspective view of an ignition coil with one side for the high voltage outlet and another side for the low voltage outlet;
  • FIG. 2 shows a sectional view through the ignition coil according to FIG. 1;
  • FIG. 3 A perspective view of an ignition coil rod, which is arranged in the ignition coil housing shown in Fig. 1;
  • Fig. 4 is a perspective view of the side of the low voltage outlet of an ignition coil
  • FIG. 5 shows a perspective view of a contact element according to the invention
  • FIG. 6 shows a perspective view of the side of the low-voltage outlet of the ignition coil rod with the contact element according to the invention according to FIG. 5;
  • FIG 7 shows a further perspective view of the side of the low-voltage outlet of the ignition coil rod with the 5 contact element according to FIG 5, but without showing the secondary winding.
  • FIG. 8 shows a perspective view of a contact crown according to the invention, consisting essentially of the contact elements according to FIG. 7;
  • FIG. 9 is a perspective view on the side of the high-voltage outlet of an ignition coil with the representation of the inventive contact crown according to FIG. 8.
  • the ignition coil 1 shows a perspective view of an ignition coil 1.
  • the ignition coil 1 comprises an ignition coil housing 2 and an ignition coil rod 3 arranged in the ignition coil housing 2. Furthermore, the ignition coil 1 has one side for a high-voltage outlet H and one side for the low-voltage outlet N.
  • the side of the low-voltage outlet N is provided in order to make contact with a power supply that is not shown in the drawing.
  • the side of the high-voltage outlet H is provided for connection to an ignition cable or a spark plug (not shown in the drawing).
  • Fig. 2 the ignition coil 1 shown in Fig. 1 is shown in a sectional view; the areas shown are those which relate to the features of the invention which are essential to the invention and which are shown in more detail in the following figures.
  • FIG. 3 shows the ignition coil rod 3, each with one side for the high-voltage outlet H and one side for the low-voltage outlet N, which can be inserted as a structural unit directly into the ignition coil housing 2 shown in FIGS. 1 and 2.
  • FIG. 4 shows an enlarged illustration of the side of the low-voltage outlet N of an ignition coil 1. It is provided that a wire is wound on a coil former 4, so that the primary winding 5 provided here results. One end of the wire of the primary winding 5 is attached to a so-called connecting post 6, from which the wire winds on the peripheral surface of the bobbin 4 and extends over a defined contact area. This contact area also serves as a contact area 7 for a contact element 8 shown in the further figures for establishing an electrical contact between the primary winding 5 and the contact element 8 itself.
  • the contact element 8 according to the invention. It is formed in one piece and essentially consists of two areas, namely a contact area 9 and a fixing area 10, the two areas being separated from one another by a waist 11.
  • the contact element 8 is fanned out like a tulip and it has on one side 12 a sliding surface 13 which slides over the contacting area 9 of the primary winding 5 during the assembly of the contact element 8.
  • the contacting region 7 is completely covered with the primary winding 5.
  • the contact element 8 is pushed in the direction of arrow 14 according to FIG. 6 over guide means 10.
  • the contact element 8 slides along the contact area 7 of the primary winding 5 until it is fixed in the pocket-like configuration 16.
  • a primary coil former 17 is pushed on in the direction of arrow 18.
  • Primary bobbin 17 one side of the primary winding 5 and cause the insulation layer to break open. This is an electrical connection bond created, which has been produced without the use of a thermal process.
  • a contact crown 20 is shown in FIG. 8, which consists of several contact elements 8, which are fastened to a ring element 21 at their fixing area 10.
  • the contact crown 20 is formed in one piece.
  • the individual contact elements 8 of the contact crown 20 are fanned out like tulips towards their contacting areas 9.
  • the cup-like contact crown 20 is pushed in the direction of the arrow 21 onto the area of the high-voltage outlet H of an ignition coil 1 until the ring element 21 reaches a connecting post 6 '.
  • This type of design of a stop serves to create a position-correct position of the contact crown 20 with respect to the contacting area 7 or 9 of the secondary winding 5 'or the contact elements 8.
  • Arrow 18 causes the contacting areas 9 of the respective contact elements 8 to be pressed against the secondary winding 5 'in its contacting area 7', since lugs 23 are also provided within the secondary coil former 22 and press them against the secondary winding 5 'in the assembled state and so on Make electrical contact by breaking the insulation.

Landscapes

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

Abstract

L'invention concerne un dispositif de connexion électrique servant à la production de bobines d'allumage. L'objectif de l'invention est de remplacer les procédés de contact usuels, par exemple les procédés thermiques, mis en oeuvre pour la connexion de minces fils laqués dans des bobines d'allumage. A cet effet, on fait appel, pour établir un contact entre l'enroulement primaire ou secondaire (5, 5') et la sortie haute tension ou basse tension (H, N), à un élément de contact (8) dont un côté peut coulisser sur l'enroulement primaire ou secondaire (5, 5') et dont l'autre côté est bloqué. L'élément de contact (8), se présentant sous la forme d'un ressort, comporte une surface de glissement (13) et s'ouvre en éventail, en forme de tulipe, sur au moins un de ses côtés, dans le sens de coulissement (flèche 18), de sorte que, une fois monté, l'élément de contact (8) appuie à la manière d'un ressort sur l'enroulement primaire ou secondaire (5, 5'), la couche isolante est rompue et une mise en contact électrique se produit.
EP04804775A 2004-01-21 2004-12-13 Mise en contact electrique de minces fils laques d'enroulements secondaires de bobines d'allumage au moyen d'une couronne de contact et d'un element de contact Active EP1709650B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004002935A DE102004002935A1 (de) 2004-01-21 2004-01-21 Elektrische Kontaktierung dünner Lackdrähte von Sekundärwicklungen von Zündspulen mit Kontaktkrone und Kontaktelement
PCT/EP2004/053410 WO2005071700A1 (fr) 2004-01-21 2004-12-13 Mise en contact electrique de minces fils laques d'enroulements secondaires de bobines d'allumage au moyen d'une couronne de contact et d'un element de contact

Publications (2)

Publication Number Publication Date
EP1709650A1 true EP1709650A1 (fr) 2006-10-11
EP1709650B1 EP1709650B1 (fr) 2010-05-05

Family

ID=34744920

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04804775A Active EP1709650B1 (fr) 2004-01-21 2004-12-13 Mise en contact electrique de minces fils laques d'enroulements secondaires de bobines d'allumage au moyen d'une couronne de contact et d'un element de contact

Country Status (5)

Country Link
US (1) US7436278B2 (fr)
EP (1) EP1709650B1 (fr)
JP (1) JP4499726B2 (fr)
DE (2) DE102004002935A1 (fr)
WO (1) WO2005071700A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006020170A1 (de) * 2006-05-02 2007-11-08 Robert Bosch Gmbh Zündspule, insbesondere für eine Brennkraftmaschine eines Kraftfahrzeugs
DE102012221897A1 (de) 2012-11-29 2014-06-05 Robert Bosch Gmbh Elektrische Kontaktanordnung zur Kontaktierung einer Spule
USD878304S1 (en) 2018-06-29 2020-03-17 Molex, Llc Contact for a connector

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4962361A (en) * 1989-08-29 1990-10-09 Honda Giken Kogyo Kabushiki Kaisha Ignition coil for engine
US5225801A (en) * 1990-04-28 1993-07-06 Toyo Denso Kabushiki Kaisha Ignition coil device for engine
JPH0810174Y2 (ja) * 1990-04-28 1996-03-27 東洋電装株式会社 エンジンの点火コイル装置
DE9403490U1 (de) * 1994-03-02 1995-06-29 Robert Bosch Gmbh, 70469 Stuttgart Zündspule für eine Brennkraftmaschine
DE29611914U1 (de) * 1996-07-09 1997-11-06 Robert Bosch Gmbh, 70469 Stuttgart Zündspule für eine Brennkraftmaschine
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
US6094122A (en) * 1999-09-08 2000-07-25 Ford Motor Company Mechanical locking connection for electric terminals
US6522232B2 (en) * 2001-04-26 2003-02-18 Delphi Technologies, Inc. Ignition apparatus having reduced electric field HV terminal arrangement
JP3997463B2 (ja) * 2001-11-26 2007-10-24 株式会社デンソー 内燃機関用点火コイル

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005071700A1 *

Also Published As

Publication number Publication date
DE102004002935A1 (de) 2005-08-11
WO2005071700A1 (fr) 2005-08-04
JP2007506272A (ja) 2007-03-15
EP1709650B1 (fr) 2010-05-05
US7436278B2 (en) 2008-10-14
JP4499726B2 (ja) 2010-07-07
US20070216507A1 (en) 2007-09-20
DE502004011142D1 (de) 2010-06-17

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