EP1563519B1 - Electrical contacting of thin enameled wires of secondary windings of ignition coils - Google Patents

Electrical contacting of thin enameled wires of secondary windings of ignition coils Download PDF

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Publication number
EP1563519B1
EP1563519B1 EP03761368.4A EP03761368A EP1563519B1 EP 1563519 B1 EP1563519 B1 EP 1563519B1 EP 03761368 A EP03761368 A EP 03761368A EP 1563519 B1 EP1563519 B1 EP 1563519B1
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EP
European Patent Office
Prior art keywords
contact
ignition coil
secondary winding
connecting arrangement
arrangement according
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
EP03761368.4A
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German (de)
French (fr)
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EP1563519A1 (en
Inventor
Klaus Lerchenmueller
Konstantin Lindenthal
Thomas Breckle
Juergen Raedler
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP1563519A1 publication Critical patent/EP1563519A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P3/00—Other installations
    • F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2495—Insulation penetration combined with permanent deformation of the contact member, e.g. crimping

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 output.
  • Ignition coils generate high voltage sparks. This jumps at the arranged on the ignition coil spark plug at the electrodes and thus ignites, for example, the air-fuel mixture of an internal combustion engine. As a rule, this spark plug is supplied with an ignition coil with high voltage.
  • a primary winding and a corresponding secondary winding is provided within the ignition coil. The primary winding is coupled at one end to an ignition starter switch, with its other end connected to a so-called breaker.
  • the secondary winding ie the winding which is responsible for the formation of the spark, is connected inside the ignition coil to one end of the primary winding, so that it is grounded.
  • the other end of the secondary winding is connected to the high voltage output, which in turn is either connected to an ignition cable leading to the spark plug, or to which the spark plug is located directly.
  • the secondary winding itself consists of a thin wire, which is coated with a corresponding lacquer layer in order to avoid the contacting of the individual wires during the winding of a specific carrier body or bobbin. After the secondary windings are wound on a carrier, the ends of the respective wires are contacted.
  • thermal contacting methods are generally known, for example soldering or welding.
  • EP 837 418 discloses the preamble of claim 1.
  • the object of the invention is to produce a connection arrangement with the features of claim 1 between an ignition coil rod of an ignition coil and a secondary or primary winding, which is inexpensive and easy to implement.
  • the basic principle of the solution of the problem is to replace the known from the prior art thermal bonding method. This is achieved in that additional contacting elements have been created, which break during assembly coated with lacquer wire of the secondary winding and thus bring about a corresponding contact.
  • the "cold" contacting method proposed here has the advantage over the previous method that no additional system costs are necessary. Furthermore, additional assembly steps are reduced and also a reduction of exclusion parts can be recorded by the embodiment according to the invention.
  • Another essential advantage of the invention is that no space must be optimized for carrying out the contacting. This means that there is no free space in the area of contacting e.g. must be kept for welding tongs, soldering iron or the like.
  • this contact sleeve On its outer circumference, this contact sleeve on contact tabs, which, after the contact sleeve is pushed onto the bobbin, contact the wire of the secondary winding by their spring-like configuration in which the contact tab of the contact sleeve, the insulation, for example, a lacquer of the wires of the secondary winding breaks.
  • the contact sleeve is to lead over the bobbin so far until it abuts against a stop which is formed on an ignition coil rod. Damage or displacement of the secondary wire is prevented in that the diameter of the contact sleeve is greater than or at least equal to the diameter of the secondary body and twice the wire diameter.
  • the ignition coil rod is By inserting into a cup-like design is achieved that the contact tabs press on the winding of the secondary winding and break through the insulating layer of the wire, so that a permanent electrical contact will be produced.
  • the free end of the winding of the secondary wire is preferably wound over a pin-like formation located at the end of the ignition coil rod. This pin then plunges into the high voltage outlet. This prevents that due to field overshoots at the wire end it comes to failure of the ignition coil.
  • a space-saving alternative provides that the pin-like design of the ignition coil rod has predetermined breaking points. As a result, during the assembly process of the module, the pin breaks in the ignition coil housing on the high-voltage output side, specifically in such a way that, despite the break, contact is ensured.
  • Fig. 1 a perspective view of an ignition coil is shown.
  • the ignition coil 1 comprises an ignition coil housing 2 and an ignition coil rod 3 arranged in the ignition coil housing 2. Further, the ignition coil 1 has a high voltage output H side and a low voltage output N side.
  • the low voltage output N side is designed to make contact with a power supply not shown in the drawing, with the high voltage output H side being provided for connection to an ignition wire or spark plug not shown in the drawing.
  • Fig. 2 is the in Fig. 1 shown ignition coil 1 shown in a sectional view; the areas shown are those which relate to the invention essential features of the invention, which are shown in more detail in the following figures.
  • a contacting region 20 (FIG. Fig. 3 ) is provided, which provides on a bobbin 21, the arrangement of a secondary winding 22. After completion of the winding of the secondary wire 22, this is passed through a bore 23 in the Mixier Scheme 20 and further wound until it enters a groove 24 and a pin 25. At the pin 25, the free end of the secondary wire 22 is tied.
  • This contact sleeve 26 has at least one preferably not extending over the entire length axial slot 27.
  • at least one contact tab 28 is provided on the peripheral surface of the contact sleeve 26, which are provided for making a contact with the secondary winding 22 in the contacting region 20 on the side of the high voltage output H.
  • the contact sleeve 26 is now guided on the side of the high voltage outlet H to a stop 29 due to the axial slot 27 via the Kunststoffier Scheme 20 of the ignition coil 3.
  • the expansion of the contact sleeve 26 during the Aufschiebevorganges prevents the secondary winding 22 is damaged on the side of the high-voltage outlet H in any way.
  • the contact sleeve 26 is designed such that it reaches an interference fit immediately after the coating over the Kunststoffier Anlagen, so that it is prevented that the contact sleeve 26 drops again.
  • This assembly formed from ignition coil rod 3 and contact sleeve 26, is now, as in Fig. 4 shown mounted in the high voltage H output of the ignition coil housing 2.
  • the ignition coil housing 2 has a cup-like design 30 for receiving the free end of the ignition coil rod 3.
  • a recess 31 is provided to receive the pin 25 of the ignition coil rod 3.
  • the cup-like design 30 of the ignition coil housing 2 ensures that the contact lugs 28 of the contact sleeve 26 are defined in the direction of an arrow 32 (FIG. Fig. 4 ).
  • the insulation layer of the secondary wire 22 is broken and permanently made an electrical contact.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Description

Die Erfindung betrifft eine elektrische Verbindungsanordnung zur Herstellung einer Zündspule, insbesondere einer Stabzündspule mit einem Zündspulenstab mit einem Hochspannungsabgang.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 output.

Stand der TechnikState of the art

Zündspulen erzeugen Hochspannungsfunken. Dieser springt bei der an der Zündspule angeordneten Zündkerze an deren Elektroden über und zündet so beispielsweise das Luft-Benzin-Gemisch einer Brennkraftmaschine. In der Regel wird diese Zündkerze mit einer Zündspule mit Hochspannung versorgt. Innerhalb der Zündspule ist eine Primärwicklung und eine entsprechende Sekundärwicklung vorgesehen. Die Primärwicklung ist mit ihrem einen Ende an einen Zündanlassschalter gekoppelt, wobei ihr anderes Ende mit einem sogenannten Unterbrecher verbunden ist.Ignition coils generate high voltage sparks. This jumps at the arranged on the ignition coil spark plug at the electrodes and thus ignites, for example, the air-fuel mixture of an internal combustion engine. As a rule, this spark plug is supplied with an ignition coil with high voltage. Within the ignition coil, a primary winding and a corresponding secondary winding is provided. The primary winding is coupled at one end to an ignition starter switch, with its other end connected to a so-called breaker.

Die Sekundärwicklung, also die Wicklung, die für die Entstehung des Zündfunkens verantwortlich ist, ist im Inneren der Zündspule mit dem einen Ende der Primärwicklung verbunden, so dass diese an Masse liegt. Das andere Ende der Sekundärwicklung ist mit dem Hochspannungsabgang verbunden, der wiederum entweder mit einem Zündkabel, das zur Zündkerze führt, verbunden ist oder an dem unmittelbar die Zündkerze angeordnet ist.The secondary winding, ie the winding which is responsible for the formation of the spark, is connected inside the ignition coil to one end of the primary winding, so that it is grounded. The other end of the secondary winding is connected to the high voltage output, which in turn is either connected to an ignition cable leading to the spark plug, or to which the spark plug is located directly.

Die Sekundärwicklung selbst besteht aus einem dünnen Draht, der mit einer entsprechenden Lackschicht überzogen ist, um bei der Umwicklung eines bestimmten Trägerkörpers bzw. Spulenkörpers die Kontaktierung der einzelnen Drähte zu vermeiden. Nachdem die Sekundärwicklungen auf einen Träger gewickelt worden sind, werden die Enden der jeweiligen Drähte kontaktiert. Hierzu sind in der Regel thermische Kontaktierungsverfahren bekannt, beispielsweise Löten oder Schweißen.The secondary winding itself consists of a thin wire, which is coated with a corresponding lacquer layer in order to avoid the contacting of the individual wires during the winding of a specific carrier body or bobbin. After the secondary windings are wound on a carrier, the ends of the respective wires are contacted. For this purpose, thermal contacting methods are generally known, for example soldering or welding.

EP 837 418 offenbart den Oberbegriff des Anspruchs 1. EP 837 418 discloses the preamble of claim 1.

Nachteile des Standes der TechnikDisadvantages of the prior art

Insbesondere bezüglich der Kontaktierung von Primär- und Sekundärwicklung sind unterschiedliche Arbeitsprozesse notwendig. Dies erfordert höhere Anlagekosten, mehrere Montageschritte und auch eine bestimmte Anzahl von Anschlussteilen, die notwendig sind, um eine elektrische Verbindung eritsprechend herstellen zu können.In particular, with respect to the contacting of primary and secondary winding different work processes are necessary. This requires higher installation costs, several assembly steps and also a certain number of connection parts, which are necessary in order to be able to produce an electrical connection accordingly.

Zudem gestaltete es sich oft schwierig, auf sehr engem Bauraum hier eine entsprechende Kontaktierung mittels den bekannten thermischen Verfahren herbeizuführen.In addition, it was often difficult to bring about a very close space here a corresponding contact using the known thermal processes.

Aufgabe der ErfindungObject of the invention

Die Aufgabe der Erfindung ist es, eine Verbindungsanordnung mit den Merkmalen des Anspruchs 1. zwischen einem Zündspulenstab einer Zündspule und einer Sekundär- bzw. Primärwicklung herzustellen, die kostengünstig und einfach realisierbar ist.The object of the invention is to produce a connection arrangement with the features of claim 1 between an ignition coil rod of an ignition coil and a secondary or primary winding, which is inexpensive and easy to implement.

Lösung der AufgabeSolution of the task

Das Grundprinzip der Lösung der Aufgabe besteht darin, das an sich aus dem Stand der Technik bekannte thermische Kontaktierungsverfahren zu ersetzen. Dies erfolgt dadurch, dass zusätzliche Kontaktierungselemente geschaffen worden sind, die bei der Montage den mit Lack ummantelten Draht der Sekundärwicklung durchbrechen und so eine entsprechende Kontaktierung herbeiführen.The basic principle of the solution of the problem is to replace the known from the prior art thermal bonding method. This is achieved in that additional contacting elements have been created, which break during assembly coated with lacquer wire of the secondary winding and thus bring about a corresponding contact.

Vorteile der ErfindungAdvantages of the invention

Als Vorteil für die elektrische Verbindungsanordnung zur Herstellung einer Zündspule kann insbesondere gesehen werden, dass die erfindungsgemäße Kontaktierung in bereits vorhandene Bauteile integriert ist und dadurch einfache Vorgänge sicher herstellbar sind.As an advantage for the electrical connection arrangement for producing an ignition coil can be seen in particular that the contact according to the invention is integrated into existing components and thereby simple operations are safe to produce.

Das hier vorgeschlagene "kalte" Kontaktierungsverfahren hat gegenüber dem bisherigen Verfahren den Vorteil, dass keine zusätzlichen Anlagekosten notwendig sind. Ferner reduzieren sich zusätzlich Montageschritte und auch eine Reduzierung von Ausschlussteilen kann durch die erfindungsgemäße Ausführung verzeichnet werden.The "cold" contacting method proposed here has the advantage over the previous method that no additional system costs are necessary. Furthermore, additional assembly steps are reduced and also a reduction of exclusion parts can be recorded by the embodiment according to the invention.

Ein weiterer wesentlicher Vorteil der Erfindung besteht darin, dass für die Durchführung der Kontaktierung keine Bauraumoptimierung erfolgen muss. Dies bedeutet, dass kein Freiraum im Bereich der Kontaktierung z.B. für Schweißzangen, Lötkolben oder dergleichen vorgehalten werden muss.Another essential advantage of the invention is that no space must be optimized for carrying out the contacting. This means that there is no free space in the area of contacting e.g. must be kept for welding tongs, soldering iron or the like.

Durch ein einfaches Aufschieben einer Kontakthülse auf den Spulenkörper, der als Sekundärwicklung ausgebildet ist, wird erreicht, dass dieser Kontaktierungskörper sich unmittelbar, ohne Verschieben der aufgebrachten Sekundärwicklung, auf den Spulenkörper aufschiebbar ist. Dies wird dadurch erreicht, dass die Kontakthülse in ihrer Längsrichtung geschlitzt und so auffederbar ist.By simply sliding a contact sleeve onto the bobbin, which is designed as a secondary winding, it is achieved that this contacting body can be pushed onto the bobbin directly without moving the applied secondary winding. This is achieved in that the contact sleeve is slotted in its longitudinal direction and so auffederbar.

Auf ihrem Außenumfang weist diese Kontakthülse Kontaktlaschen auf, die, nachdem die Kontakthülse auf den Spulenkörper aufgeschoben ist, durch ihre federartige Ausgestaltung den Draht der Sekundärwicklung kontaktieren, in dem die Kontaktlasche der Kontakthülse die Isolierung, beispielsweise einen Lack der Drähte der Sekundärwicklung, durchbricht.On its outer circumference, this contact sleeve on contact tabs, which, after the contact sleeve is pushed onto the bobbin, contact the wire of the secondary winding by their spring-like configuration in which the contact tab of the contact sleeve, the insulation, for example, a lacquer of the wires of the secondary winding breaks.

Die Kontakthülse ist über den Spulenkörper soweit zu führen, bis diese an einem Anschlag, der an einem Zündspulenstab ausgebildet ist, anschlägt. Ein Beschädigen bzw. Verschieben des Sekundärdrahtes wird dadurch verhindert, dass der Durchmesser der Kontakthülse größer oder zumindest gleich dem Durchmesser des Sekundärkörpers sowie des zweifachen des Drahtdurchmessers ist. Sobald die Kontakthülse auf sehr einfache Art und Weise in dem Kontaktierbereich des Zündspulenstabes angeordnet ist, wird dem Kontaktierbereich des Zündspulenstabes angeordnet ist, wird diese in das Zündspulengehäuse mit dem Hochspannungsabgang montiert, Durch das Einfügen in eine becherartige Ausbildung wird erreicht, dass die Kontaktlaschen sich auf die Wicklung der Sekundärwicklung drücken und die Isolationsschicht des Drahtes durchbrechen, so dass ein dauerhafter elektrischer Kontakt hergestellt wird. Das freie Ende der Wicklung des Sekundärdrahtes wird vorzugsweise über eine pinartige Ausbildung, die sich am Ende des Zündspulenstabes befindet, gewickelt. Dieser Pin taucht dann in den Hochspannungsabgang ein. Dadurch wird verhindert, dass aufgrund von Feldüberhöhungen am Drahtende es zu Ausfällen der Zündspule kommt.The contact sleeve is to lead over the bobbin so far until it abuts against a stop which is formed on an ignition coil rod. Damage or displacement of the secondary wire is prevented in that the diameter of the contact sleeve is greater than or at least equal to the diameter of the secondary body and twice the wire diameter. Once the contact sleeve is arranged in a very simple manner in the Kontaktierbereich the ignition coil rod is By inserting into a cup-like design is achieved that the contact tabs press on the winding of the secondary winding and break through the insulating layer of the wire, so that a permanent electrical contact will be produced. The free end of the winding of the secondary wire is preferably wound over a pin-like formation located at the end of the ignition coil rod. This pin then plunges into the high voltage outlet. This prevents that due to field overshoots at the wire end it comes to failure of the ignition coil.

Eine raumraumsparende Alternative sieht vor, dass die pinartige Ausbildung des Zündspulenstabes Sollbruchstellen aufweist. Dies führt dazu, dass beim Montagevorgang der Baugruppe in das Zündspulengehäuse auf der Hochspannungsabgangsseite der Pin bricht und zwar derart nach innen, das trotz des Bruches ein Kontakt gewährleistet ist.A space-saving alternative provides that the pin-like design of the ignition coil rod has predetermined breaking points. As a result, during the assembly process of the module, the pin breaks in the ignition coil housing on the high-voltage output side, specifically in such a way that, despite the break, contact is ensured.

Weitere vorteilhafte Ausgestaltungen gehen aus der nachfolgenden Beschreibung, sowie den Zeichnungen und den Ansprüchen hervor.Further advantageous embodiments will become apparent from the following description, as well as the drawings and the claims.

Zeichnungendrawings

Es zeigen

Fig. 1
Eine perspektivische Ansicht auf eine Zündspule mit einer Seite für den Hochspannungsabgang und einer weiteren Seite für den Niederspannungsabgang;
Fig. 2
Eine Schnittdarstellung durch die Zündspule gemäß Fig. 1;
Fig. 3
Eine vergrößerte Darstellung der perspektivischen Ansicht der Seite des Hochsparinungsabgangs des Zündspulenstabs;
Fig. 4
Einen Schnitt durch die vergrößerte Darstellung der Seite des Hochspannungsabgangs gemäß Fig. 3;
Fig. 5
Eine perspektivische Ansicht auf die Kontakthülse zur Montage auf der Seite des Hochspannungsabganges;
Fig. 6
Eine Schnittdarstellung der Kontakthülse gemäß Fig. 5;
Fig. 7
Eine vergrößerte Teildarstellung der erfindungsgemäßen Kontaktlaschen der Kontakthülse gemäß Fig. 6.
Show it
Fig. 1
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
A sectional view through the ignition coil according to Fig. 1 ;
Fig. 3
An enlarged view of the perspective view of the side of the Hochsparinungsabgangs the ignition coil rod;
Fig. 4
A section through the enlarged view of the side of the high voltage outlet according to Fig. 3 ;
Fig. 5
A perspective view of the contact sleeve for mounting on the side of the high voltage outlet;
Fig. 6
A sectional view of the contact sleeve according to Fig. 5 ;
Fig. 7
An enlarged partial view of the contact tabs of the contact sleeve according to the invention Fig. 6 ,

Beschreibung eines AusführungsbeispielsDescription of an embodiment

In Fig. 1 ist eine perspektivische Ansicht einer Zündspule dargestellt. Die Zündspule 1 umfasst ein Zündspulengehäuse 2 und einen in dem Zündspulengehäuse 2 angeordneten Zündspulenstab 3. Ferner weist die Zündspule 1 eine Seite für einen Hochspannungsabgang H und eine Seite für den Niederspannungsabgang N auf. Die Seite des Niederspannungsabgangs N ist dafür vorgesehen, um einen Kontakt mit einer in der Zeichnung nicht näher dargestellte Stromversorgung herzustellen, wobei die Seite des Hochspannungsabgangs H zur Verbindung mit einem in der Zeichnung nicht näher dargestellten Zündkabel oder einer Zündkerze vorgesehen ist.In Fig. 1 a perspective view of an ignition coil is shown. The ignition coil 1 comprises an ignition coil housing 2 and an ignition coil rod 3 arranged in the ignition coil housing 2. Further, the ignition coil 1 has a high voltage output H side and a low voltage output N side. The low voltage output N side is designed to make contact with a power supply not shown in the drawing, with the high voltage output H side being provided for connection to an ignition wire or spark plug not shown in the drawing.

In Fig. 2 ist die in Fig. 1 dargestellte Zündspule 1 in einer Schnittdarstellung gezeigt; die dargestellten Bereiche sind solche, die sich auf die erfindungswesentlichen Merkmale der Erfindung beziehen, die in den nachfolgenden Figuren näher dargestellt sind.In Fig. 2 is the in Fig. 1 shown ignition coil 1 shown in a sectional view; the areas shown are those which relate to the invention essential features of the invention, which are shown in more detail in the following figures.

Auf der Hochspannungsseite H ist an dem Zündspulenstab 3 ein Kontaktierbereich 20 (Fig. 3) vorgesehen, der auf einem Spulenkörper 21 die Anordnung einer Sekundärwicklung 22 vorsieht. Nach Beendigung der Wicklung des Sekundärdrahtes 22 wird dieser durch eine Bohrung 23 in den Kontaktierbereich 20 geführt und derart weitergewickelt, bis dieser in eine Nut 24 und zu einem Pin 25 gelangt. An dem Pin 25 wird das freie Ende des Sekundärdrahtes 22 festgebunden.On the high-voltage side H, a contacting region 20 (FIG. Fig. 3 ) is provided, which provides on a bobbin 21, the arrangement of a secondary winding 22. After completion of the winding of the secondary wire 22, this is passed through a bore 23 in the Kontaktierbereich 20 and further wound until it enters a groove 24 and a pin 25. At the pin 25, the free end of the secondary wire 22 is tied.

Über den Kontaktierbereich 20 wird nun eine in den Fig. 4 bis 7 dargestellte Kontakthülse 26 gestülpt. Diese Kontakthülse 26 weist mindestens einen vorzugsweise nicht sich über die gesamte Länge erstreckenden Axialschlitz 27 auf. Zudem ist auf der Umfangsfläche der Kontakthülse 26 mindestens eine Kontaktlasche 28 vorgesehen, die zur Herstellung eines Kontakts mit der Sekundärwicklung 22 im Kontaktierbereich 20 auf der Seite des Hochspannungsabgangs H vorgesehen sind.About the Kontaktierbereich 20 is now in the Fig. 4 to 7 shown contact sleeve 26 slipped. This contact sleeve 26 has at least one preferably not extending over the entire length axial slot 27. In addition, at least one contact tab 28 is provided on the peripheral surface of the contact sleeve 26, which are provided for making a contact with the secondary winding 22 in the contacting region 20 on the side of the high voltage output H.

Die Kontakthülse 26 wird nun aufgrund des Axialschlitzes 27 über den Kontaktierbereich 20 des Zündspulenstabes 3 auf der Seite des Hochspannungsabgangs H bis zu einem Anschlag 29 geführt. Das Aufweiten der Kontakthülse 26 während des Aufschiebevorganges verhindert, dass die Sekundärwicklung 22 auf der Seite des Hochspannungsabganges H in irgendeiner Art und Weise beschädigt wird. Die Kontakthülse 26 ist derart ausgelegt, das diese unmittelbar nach dem Überziehen über den Kontaktierbereich ein Presssitz erreicht, so dass verhindert wird, dass die Kontakthülse 26 wieder abfällt.The contact sleeve 26 is now guided on the side of the high voltage outlet H to a stop 29 due to the axial slot 27 via the Kontaktierbereich 20 of the ignition coil 3. The expansion of the contact sleeve 26 during the Aufschiebevorganges prevents the secondary winding 22 is damaged on the side of the high-voltage outlet H in any way. The contact sleeve 26 is designed such that it reaches an interference fit immediately after the coating over the Kontaktierbereich, so that it is prevented that the contact sleeve 26 drops again.

Diese Baugruppe, gebildet aus Zündspulenstab 3 und Kontakthülse 26, wird nun, wie in Fig. 4 dargestellt, in den Hochspannungsabgang H des Zündspulengehäuses 2 montiert. Dabei weist das Zündspulengehäuse 2 eine becherartige Ausbildung 30 zur Aufnahme des freien Endes des Zündspulenstabes 3 auf. Zusätzlich ist eine Ausnehmung 31 vorgesehen, um den Pin 25 des Zündspulenstabes 3 aufzunehmen.This assembly, formed from ignition coil rod 3 and contact sleeve 26, is now, as in Fig. 4 shown mounted in the high voltage H output of the ignition coil housing 2. In this case, the ignition coil housing 2 has a cup-like design 30 for receiving the free end of the ignition coil rod 3. In addition, a recess 31 is provided to receive the pin 25 of the ignition coil rod 3.

Durch die becherartige Ausbildung 30 des Zündspulengehäuses 2 wird erreicht, dass die Kontaktlaschen 28 der Kontakthülse 26 definiert in Richtung eines Pfeils 32 (Fig. 4) gedrückt werden. Dabei wird die Isolationsschicht des Sekundärdrahtes 22 durchbrochen und dauerhaft ein elektrischer Kontakt hergestellt. Das freie Drahtende des Sekundärdrahtes 22, das an dem Pin 25 aufgewickelt ist, taucht in die Ausnehmung 31 ein. Dabei liegt der Anschlag 29, der auf Seiten des Zündspulenstabes 3 angeordnet ist, auf einer Schulter 33 auf Seiten des Zündspulengehäuses 2 auf. Durch Integration der Kontaktierungsmöglichkeit und vorhandenen Bauteilen ist es möglich geworden, durch einfache Fügevorgänge Kontaktmöglichkeiten zwischen Bauteilen und Sekundärwicklung bei einer Zündspule herzustellen, und dabei zusätzliche Anlagekosten, Montageschritte und dergleichen einzusparen. The cup-like design 30 of the ignition coil housing 2 ensures that the contact lugs 28 of the contact sleeve 26 are defined in the direction of an arrow 32 (FIG. Fig. 4 ). In this case, the insulation layer of the secondary wire 22 is broken and permanently made an electrical contact. The free wire end of the secondary wire 22, which is wound on the pin 25, immersed in the recess 31 a. In this case, the stop 29, which is arranged on the side of the ignition coil rod 3, on a shoulder 33 on the side of the ignition coil housing 2. By integrating the possibility of contacting and existing components, it has become possible to produce contact possibilities between components and secondary winding in an ignition coil by simple joining processes, thereby saving additional installation costs, assembly steps and the like.

Claims (7)

  1. Electrical connecting arrangement of a rod ignition coil having an ignition coil rod which has a high-voltage output and a low-voltage output, wherein a contact sleeve (26) which is at least partially slotted in the longitudinal direction, which interacts, by way of its inner face, with a coil former (21) having a secondary winding (22) at least having one contact-making region (20), and which is placed over the said contact-making region (20), is provided on the side of the high-voltage output (H), wherein the contact sleeve (26) has at least one contact lug (28) which has, on that side which faces the coil former (21), a contact-making element, which breaches an insulation layer which surrounds the secondary winding, and which makes contact with the said secondary winding, characterized in that the ignition coil housing (2) has a cup-like shaped portion (30) for receiving one end of the ignition coil rod, wherein the cup-like shaped portion (30) is arranged in such a way that the at least one contact lug (28) of the contact sleeve (26) presses against the secondary winding (22) in the radial direction (32) in such a way that the insulation layer which surrounds the secondary winding (22) is breached.
  2. Connecting arrangement according to Claim 1, characterized in that the contact sleeve (26) is arranged with a press-fit over the contact-making region (20).
  3. Connecting arrangement according to Claim 1 or 2, characterized in that the contact sleeve (26) can spring open.
  4. Connecting arrangement according to at least one of the preceding claims, characterized in that at least one contact lug (28) is provided on the contact sleeve (26), the said contact lug, in the state in which it is mounted in the ignition coil housing (2), lying against the contact-making region (20) and establishing an electrical connection owing to the interaction with the ignition coil housing (2).
  5. Connecting arrangement according to at least one of the preceding claims, characterized in that the end of the high-voltage output (H) of the ignition coil rod (3) has a pin (25) which, in the mounted state, engages into a recess (31) on the side of the ignition coil housing (2) of the ignition coil (1).
  6. Connecting arrangement according to Claim 5, characterized in that the pin (25) is provided for winding up one end of the secondary winding (22).
  7. Connecting arrangement according to Claim 5, characterized in that the pin (25) has at least one predetermined breaking point.
EP03761368.4A 2002-11-07 2003-07-03 Electrical contacting of thin enameled wires of secondary windings of ignition coils Expired - Lifetime EP1563519B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10251840 2002-11-07
DE10251840A DE10251840A1 (en) 2002-11-07 2002-11-07 Electrical connector for rod-shaped ignition coil, has contact sleeve with tongues which penetrate insulation of secondary coil to make contact when sleeve is assembled
PCT/DE2003/002234 WO2004042748A1 (en) 2002-11-07 2003-07-03 Electrical contacting of thin enameled wires of secondary windings of ignition coils

Publications (2)

Publication Number Publication Date
EP1563519A1 EP1563519A1 (en) 2005-08-17
EP1563519B1 true EP1563519B1 (en) 2015-06-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03761368.4A Expired - Lifetime EP1563519B1 (en) 2002-11-07 2003-07-03 Electrical contacting of thin enameled wires of secondary windings of ignition coils

Country Status (5)

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US (1) US7075400B2 (en)
EP (1) EP1563519B1 (en)
JP (1) JP4411214B2 (en)
DE (1) DE10251840A1 (en)
WO (1) WO2004042748A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10251841A1 (en) * 2002-11-07 2004-05-19 Robert Bosch Gmbh Electrical connector for rod-shaped ignition coil, has contact spring which is displaced across contact region, and makes contact with secondary coil when in end position
DE102005047184A1 (en) * 2005-09-30 2007-04-05 Robert Bosch Gmbh Ignition coil for internal combustion engine has magnetically active core with injection moulded plastics coil body with winding area for wire which is free of parting lines in this area
DE102006020170A1 (en) * 2006-05-02 2007-11-08 Robert Bosch Gmbh Ignition coil, in particular for an internal combustion engine of a motor vehicle
ITUB20169987A1 (en) * 2016-01-14 2017-07-14 Tyco Electronics Amp Italia Srl CONNECTOR FOR MAGNETIC COIL
IT201700075884A1 (en) * 2017-07-06 2019-01-06 Tyco Electronics Amp Italia Srl ELECTRIC CONNECTOR
JP7189168B2 (en) * 2020-02-07 2022-12-13 株式会社藤商事 game machine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3830763C2 (en) * 1988-09-09 1998-04-09 Siemens Ag Electrical connection device
EP0951026B1 (en) * 1996-08-31 2003-03-19 Toyo Denso Kabushiki Kaisha Engine igniting coil device
JP3473817B2 (en) * 1996-10-18 2003-12-08 株式会社デンソー Ignition coil for internal combustion engine
US6522232B2 (en) * 2001-04-26 2003-02-18 Delphi Technologies, Inc. Ignition apparatus having reduced electric field HV terminal arrangement
US6724289B2 (en) * 2001-08-17 2004-04-20 Delphi Technologies, Inc. Ignition apparatus having feature for shielding the HV terminal
JP3997463B2 (en) * 2001-11-26 2007-10-24 株式会社デンソー Ignition coil for internal combustion engine

Also Published As

Publication number Publication date
US20060097834A1 (en) 2006-05-11
JP2006505924A (en) 2006-02-16
WO2004042748A1 (en) 2004-05-21
EP1563519A1 (en) 2005-08-17
DE10251840A1 (en) 2004-05-19
US7075400B2 (en) 2006-07-11
JP4411214B2 (en) 2010-02-10

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