EP1563520B1 - Electrical contact between thin varnished wires of the secondary winding of an ignition coil - Google Patents

Electrical contact between thin varnished wires of the secondary winding of an ignition coil Download PDF

Info

Publication number
EP1563520B1
EP1563520B1 EP20030762341 EP03762341A EP1563520B1 EP 1563520 B1 EP1563520 B1 EP 1563520B1 EP 20030762341 EP20030762341 EP 20030762341 EP 03762341 A EP03762341 A EP 03762341A EP 1563520 B1 EP1563520 B1 EP 1563520B1
Authority
EP
European Patent Office
Prior art keywords
contact
secondary winding
contact spring
ignition coil
making
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
EP20030762341
Other languages
German (de)
French (fr)
Other versions
EP1563520A1 (en
Inventor
Klaus Lerchenmueller
Konstantin Lindenthal
Thomas Breckle
Juergen Raedler
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 EP1563520A1 publication Critical patent/EP1563520A1/en
Application granted granted Critical
Publication of EP1563520B1 publication Critical patent/EP1563520B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • 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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H01F27/2828—Construction of conductive connections, of leads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor

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. 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 ignition 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 connected either to an ignition cable leading to the spark plug, or to which the spark plug is directly located.
  • 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.
  • DE3533054 discloses an electrical connection arrangement of a coil having a low-voltage output, wherein a bobbin is provided, on which a wire is wound, which forms a secondary winding, wherein a contact spring is provided on the side of the low-voltage outlet, and which is pushed over a contacting region and contacts the wire of the winding in an end position, wherein the contact spring is pushed over a arranged on the bobbin nose-like element until this element penetrates an opening formed in the contact spring, so that the element and the contact spring lock together.
  • 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.
  • the nose-like element Upon reaching a defined position, which is provided by an opening or recess on the side of the contact spring, the nose-like element snaps into this opening, so that the contact spring rests on the secondary winding.
  • Fig. 1 is a perspective view of an ignition coil 1 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.
  • Fig. 3 the ignition coil rod 3 is shown with one side for the high-voltage outlet H and one side for the low-voltage outlet N, the immediately after its assembly as a unit in the in Fig. 1 and 2 illustrated ignition coil housing 2 is inserted.
  • FIG. 4 an enlarged view of the side of the low voltage output M of an ignition coil 1 is shown. It is provided to wind a wire on a bobbin 4, so that the secondary winding 5 provided here results.
  • the one end of the wire of the secondary winding 5 is attached to a so-called Anbindepfosten 6, from which the wire winds on the peripheral surface of the bobbin 4 and extends over a defined support area.
  • This support area also serves as Maisier Scheme 7 for a in Fig. 5 to 9 illustrated contact spring 8 for producing an electrical contact between the secondary winding 5 and the contact spring 8 itself.
  • the support surface 7 is completely covered with the secondary winding 5.
  • the contact spring 8 in the direction of arrow 9 according to Fig. 8 pushed over guide means 10.
  • the contact spring 8 slides along a surface 11 of the ignition coil rod 3 until it is a nose-like Element 12 reached.
  • the contact spring 8 slides on, so that they at a distance from the in Fig. 8 shown bobbin 4 or at a distance to the secondary winding 5 is guided. If the contact spring 8 reaches a defined position, then the nose-like element 12 penetrates into the FIGS. 9 and 10 illustrated opening 13 of the contact spring 8, so that the bottom 14 of the contact spring 8 is fully applied to the secondary winding 5.

Description

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

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 Zünd-funkens 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 öder an dem unmittelbar die Zündkerze angeordnet ist.The secondary winding, ie the winding which is responsible for the formation of the ignition 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 connected either to an ignition cable leading to the spark plug, or to which the spark plug is directly located.

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.

DE3533054 offenbart eine elektrische Verbindungsanordnung einer Spule mit einem Niederspannungsabgang, wobei ein Spulenkörper vorgesehen ist, auf den ein Draht gewickelt ist, der eine Sekundärwicklung bildet,
wobei auf der Seite des Niederspannungsabganges eine Kontaktfeder vorgesehen ist, und die über einen Kontaktierbereich geschoben ist und in einer Endstellung den Draht der Wicklung kontaktiert,
wobei die Kontaktfeder über ein an dem Spulenkörper angeordnetes nasenartiges Element geschoben ist, bis dieses Element eine in der Kontaktfeder ausgebildete Öffnung durchdringt, so dass das Element und die Kontaktfeder miteinander verrasten. DE3533054 discloses an electrical connection arrangement of a coil having a low-voltage output, wherein a bobbin is provided, on which a wire is wound, which forms a secondary winding,
wherein a contact spring is provided on the side of the low-voltage outlet, and which is pushed over a contacting region and contacts the wire of the winding in an end position,
wherein the contact spring is pushed over a arranged on the bobbin nose-like element until this element penetrates an opening formed in the contact spring, so that the element and the contact spring lock together.

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 entsprechend 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.

Auf der Seite des Niederspannungsabgangs ist erfindungsgemäss vorgesehen, eine Kontaktfeder über Führungsmittel einzuschieben, die während ihres Einschiebevorgangs über ein nasenartiges Element gleitet, so dass die Kontaktfeder zunächst ohne Berührung der Sekundärwicklung über diese führbar ist.On the side of the low-voltage outlet is provided according to the invention to insert a contact spring via guide means which slides during its Einschiebevorgangs via a nose-like element, so that the contact spring is initially feasible without touching the secondary winding.

Bei Erreichen einer definierten Stellung, die durch eine Öffnung bzw. Ausnehmung auf Seiten der Kontaktfeder vorgesehen ist, schnappt das nasenartige Element in diese Öffnung, so dass die Kontaktfeder auf der Sekundärwicklung aufliegt.Upon reaching a defined position, which is provided by an opening or recess on the side of the contact spring, the nose-like element snaps into this opening, so that the contact spring rests on the secondary winding.

Auf der zum Spulenkörper hinweisenden Seite der Kontaktfeder sind Kontaktelemente vorgesehen, die beim Schnappvorgang auf die mit Isolierung versehenen Drähte des Spulenkörpers drücken und durch diesen Schnappvorgang bewirken, dass die Isolierung an den entsprechenden Kontaktstellen aufgebrochen wird, so dass ein elektrischer Kontakt zwischen den einzelnen Drähten des Spulenkörpers und der Kontaktfeder herstellbar ist. Weitere vorteilhafte Ausgestaltungen gehen aus der nachfolgenden Beschreibung, sowie den Zeichnungen und den Ansprüchen hervor.On the bobbin-facing side of the contact spring contact elements are provided which press the snap-action on the provided with insulation wires of the bobbin and cause by this snap action that the insulation is broken at the corresponding contact points, so that an electrical contact between the individual wires of the Bobbin and the contact spring can be produced. 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 perspektivische Ansicht auf einen Zündspulenstab, der in dem in Fig. 1 dargestellten Zündspulengehäuse angeordnet ist;
Fig. 4
Eine perspektivische Ansicht auf die Seite des Niederspannungsabganges einer Zündspule;
Fig. 5
Eine perspektivische Ansicht auf den Zündspulenstab, insbesondere auf die Seite des Niederspannungsabganges mit einer Kontaktfeder;
Fig. 6
Eine perspektivische Ansicht einer vergrößerten Darstellung der Seite des Niederspannungsabgangs des Zündspulenstabes mit einer Kontaktfeder in Vormontagestellung;
Fig. 7
Einen Schnitt durch den Zündspulenstab gemäß Fig. 5;
Fig. 8
Eine vergrößerte Darstellung des Schnittes gemäß Fig. 7;
Fig. 9
Eine perspektivische Ansicht auf die erfindungsgemäße Kontaktfeder zur Montage auf der Seite des Niederspannungsabgangs;
Fig. 10
Eine vergrößerte Darstellung der Kontaktfeder gemäß Fig. 9.
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
A perspective view of an ignition coil rod, which in the in Fig. 1 arranged ignition coil housing is arranged;
Fig. 4
A perspective view of the side of the low voltage output of an ignition coil;
Fig. 5
A perspective view of the ignition coil rod, in particular on the side of the low-voltage outlet with a contact spring;
Fig. 6
A perspective view of an enlarged view of the side of the low voltage output of the ignition coil rod with a contact spring in pre-assembly;
Fig. 7
A section through the ignition coil rod according to Fig. 5 ;
Fig. 8
An enlarged view of the section according to Fig. 7 ;
Fig. 9
A perspective view of the contact spring according to the invention for mounting on the side of the low-voltage outlet;
Fig. 10
An enlarged view of the contact spring according to Fig. 9 ,

Beschreibung eines AusführungsbeispielsDescription of an embodiment

In Fig. 1 ist eine perspektivische Ansicht einer Zündspule 1 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 is a perspective view of an ignition coil 1 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.

In Fig. 3 ist der Zündspulenstab 3 mit jeweils einer Seite für den Hochspannungsabgang H und einer Seite für den Niederspannungsabgang N dargestellt, der unmittelbar nach seiner Montage als Baueinheit in das in den Fig. 1 und 2 dargestellte Zündspulengehäuse 2 einführbar ist.In Fig. 3 the ignition coil rod 3 is shown with one side for the high-voltage outlet H and one side for the low-voltage outlet N, the immediately after its assembly as a unit in the in Fig. 1 and 2 illustrated ignition coil housing 2 is inserted.

In Fig. 4 ist eine vergrößerte Darstellung der Seite des Niederspannungsabgangs M einer Zündspule 1 dargestellt. Dabei ist vorgesehen, auf einen Spulenkörper 4 einen Draht zu wickelt, so dass sich die hier vorgesehene Sekundärwicklung 5 ergibt. Das eine Ende des Drahtes der Sekundärwicklung 5 wird an einen sogenannten Anbindepfosten 6 angebracht, von dem aus sich der Draht auf der Umfangfläche des Spulenkörpers 4 wickelt und sich über einen definierten Auflagebereich erstreckt. Dieser Auflagebereich dient gleichzeitig als Kontaktierbereich 7 für eine in Fig. 5 bis 9 dargestellte Kontaktfeder 8 zur Herstellung eines elektrischen Kontakts zwischen der Sekundärwicklung 5 und der Kontaktfeder 8 selbst.In Fig. 4 an enlarged view of the side of the low voltage output M of an ignition coil 1 is shown. It is provided to wind a wire on a bobbin 4, so that the secondary winding 5 provided here results. The one end of the wire of the secondary winding 5 is attached to a so-called Anbindepfosten 6, from which the wire winds on the peripheral surface of the bobbin 4 and extends over a defined support area. This support area also serves as Kontaktierbereich 7 for a in Fig. 5 to 9 illustrated contact spring 8 for producing an electrical contact between the secondary winding 5 and the contact spring 8 itself.

Nachdem die Sekundärwicklung 5 an dem Spulenkörper 4 hergestellt ist, ist die Auflagefläche 7 vollständig mit der Sekundärwicklung 5 bedeckt. Anschließend wird die Kontaktfeder 8 in Pfeilrichtung 9 gemäß Fig. 8 über Führungsmittel 10 geschoben. Dabei gleitet die Kontaktfeder 8 auf einer Oberfläche 11 des Zündspulenstabes 3 entlang, bis diese ein nasenartiges Element 12 erreicht. Auf diesem nasenartigen Element 12 gleitet die Kontaktfeder 8 weiter, so dass diese im Abstand zu dem in Fig. 8 dargestellten Spulenkörper 4 bzw. im Abstand zu der Sekundärwicklung 5 geführt wird. Erreicht die Kontaktfeder 8 eine definierte Stellung, so durchdringt das nasenartige Element 12 eine in den Fig. 9 und 10 dargestellte Öffnung 13 der Kontaktfeder 8, so dass die Unterseite 14 der Kontaktfeder 8 vollständig auf der Sekundärwicklung 5 anliegt. Kontaktelemente 15, die ebenfalls auf der Unterseite 14 der Kontaktfeder 8 angeordnet sind, durchbrechen die Isolationsschicht der Sekundärwicklung 5 und sorgen dafür, dass ein elektrischer Kontakt zwischen der Kontaktfeder 8 und der Sekundärwicklung 5 entsteht. Damit ist eine elektrische Verbindung geschaffen worden, die ohne Anwendung eines thermischen Verfahrens hergestellt worden ist.After the secondary winding 5 is made on the bobbin 4, the support surface 7 is completely covered with the secondary winding 5. Subsequently, the contact spring 8 in the direction of arrow 9 according to Fig. 8 pushed over guide means 10. In this case, the contact spring 8 slides along a surface 11 of the ignition coil rod 3 until it is a nose-like Element 12 reached. On this nose-like element 12, the contact spring 8 slides on, so that they at a distance from the in Fig. 8 shown bobbin 4 or at a distance to the secondary winding 5 is guided. If the contact spring 8 reaches a defined position, then the nose-like element 12 penetrates into the FIGS. 9 and 10 illustrated opening 13 of the contact spring 8, so that the bottom 14 of the contact spring 8 is fully applied to the secondary winding 5. Contact elements 15, which are also arranged on the underside 14 of the contact spring 8, break through the insulating layer of the secondary winding 5 and ensure that an electrical contact between the contact spring 8 and the secondary winding 5 is formed. Thus, an electrical connection has been created that has been made without the use of a thermal process.

Claims (3)

  1. Electrical connecting arrangement of a pencil ignition coil, having an ignition coil pencil with a high-voltage output and a low-voltage output, wherein a coil former is provided, a wire which forms a secondary winding being wound onto the said coil former, wherein a contact spring (8) is provided on the side of the low-voltage output (N), the said contact spring being pushed over a contact-making region (7) and, in an end position, making contact with the wire of the secondary winding (5), wherein the contact spring (8) is pushed over a lug-like element (12), which is arranged on the coil former (4), until the said element enters an opening (13) which is formed in the contact spring (8), so that the element (12) and the contact spring (8) latch with one another, characterized in that the contact-making region (7) is formed over the circumference of the coil former (4) and the contact spring (8) rests on the secondary winding (5) in the end position.
  2. Connecting arrangement according to Claim 1, characterized in that the contact-making region, as seen downstream of the lug-like element (12) in the joining direction, is formed in an elevated and inclined manner in relation to the contact-making region, as seen upstream of the lug-like element (12) in the joining direction.
  3. Connecting arrangement according to Claim 1, characterized in that the contact spring (8) has contact-making elements (15) on that side which faces the coil former, the said contact elements passing through an insulation layer which surrounds the secondary winding (4) and making contact with the said secondary winding.
EP20030762341 2002-11-07 2003-07-25 Electrical contact between thin varnished wires of the secondary winding of an ignition coil Expired - Lifetime EP1563520B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10251841A DE10251841A1 (en) 2002-11-07 2002-11-07 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
DE10251841 2002-11-07
PCT/DE2003/002513 WO2004042749A1 (en) 2002-11-07 2003-07-25 Electrical contact between thin varnished wires of the secondary winding of an ignition coil

Publications (2)

Publication Number Publication Date
EP1563520A1 EP1563520A1 (en) 2005-08-17
EP1563520B1 true EP1563520B1 (en) 2015-05-20

Family

ID=32115336

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030762341 Expired - Lifetime EP1563520B1 (en) 2002-11-07 2003-07-25 Electrical contact between thin varnished wires of the secondary winding of an ignition coil

Country Status (5)

Country Link
US (1) US7305751B2 (en)
EP (1) EP1563520B1 (en)
JP (1) JP4575164B2 (en)
DE (1) DE10251841A1 (en)
WO (1) WO2004042749A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE102011082230A1 (en) 2011-04-28 2012-10-31 Robert Bosch Gmbh Electrical connection arrangement for an ignition coil
DE102012212617A1 (en) 2012-07-18 2014-01-23 Robert Bosch Gmbh Electrical connection arrangement for an ignition coil
ITUB20169987A1 (en) * 2016-01-14 2017-07-14 Tyco Electronics Amp Italia Srl CONNECTOR FOR MAGNETIC COIL
CN111430130B (en) * 2020-05-07 2021-02-05 扬州硕宇高压电气有限公司 Conductive rod convenient to clean and manufacturing method

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3533054A (en) * 1968-01-11 1970-10-06 United Carr Inc Electrical terminal structure
US4721935A (en) 1984-03-28 1988-01-26 General Electric Company Bobbins coils with terminal housing
JPH0625945Y2 (en) 1988-08-05 1994-07-06 東洋電装株式会社 Engine ignition coil
JPH0625947Y2 (en) * 1988-08-29 1994-07-06 東洋電装株式会社 Engine ignition coil
JPH0745942Y2 (en) * 1990-04-28 1995-10-18 東洋電装株式会社 Engine ignition coil device
DE69719556T2 (en) * 1996-08-31 2004-07-01 Toyo Denso K.K. Ignition coil device for internal combustion engines
JP3473817B2 (en) * 1996-10-18 2003-12-08 株式会社デンソー Ignition coil for internal combustion engine
JP3421945B2 (en) * 1998-07-07 2003-06-30 ティーディーケイ株式会社 Wound type surface mount electronic component and method of manufacturing the same
US6724289B2 (en) * 2001-08-17 2004-04-20 Delphi Technologies, Inc. Ignition apparatus having feature for shielding the HV terminal
DE10251840A1 (en) * 2002-11-07 2004-05-19 Robert Bosch Gmbh 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

Also Published As

Publication number Publication date
JP4575164B2 (en) 2010-11-04
EP1563520A1 (en) 2005-08-17
US7305751B2 (en) 2007-12-11
US20060211292A1 (en) 2006-09-21
WO2004042749A1 (en) 2004-05-21
DE10251841A1 (en) 2004-05-19
JP2006505925A (en) 2006-02-16

Similar Documents

Publication Publication Date Title
EP0304038B2 (en) Ignition unit for combustion engines
EP0862689B1 (en) Motor fuel dispenser
DE10110280A1 (en) Ignition coil for use on petrol engine, has core of magnetically permeable material with associated primary and secondary coils.
EP0513597A1 (en) Method of manufacturing a connector block
DE10143055A1 (en) Ignition unit comprises a housing accommodating a spark plug, an ignition coil electrically joined to the spark plug connector section, and a connector element for supplying voltage to the ignition coil
DE10055589A1 (en) Ignition coil with primary winding arranged outside the secondary winding
EP1563520B1 (en) Electrical contact between thin varnished wires of the secondary winding of an ignition coil
DE102014219725A1 (en) Ignition coil with simplified contacting of a suppression device
EP2052394B1 (en) Method for producing a coil, in particular an ignition coil for a motor vehicle
EP1563519B1 (en) Electrical contacting of thin enameled wires of secondary windings of ignition coils
DE10043883A1 (en) Sheath for a glow plug module of an ignition coil arrangement
EP2812664B1 (en) Pressure measuring device for a sensor measuring pressure in a combustion chamber
DE10110279B4 (en) Shield and spring interface between a spark plug and a pin coil
EP2933804A1 (en) Induction component
EP2016653A1 (en) Ignition coil for an internal combustion engine, in particular of a motor vehicle
DE19850519A1 (en) Ignition arrangement for internal combustion engine has noise suppression element as inductance that damps noise energy by AC impedance and is at least partly formed by winding wire
WO2005071700A1 (en) Electrical contact of thin enamel covered wires of secondary windings of ignition coils comprising a contact crown and a contact element
DE1815082A1 (en) Ignition coil for magnetic flywheels
DE10357349A1 (en) ignition coil
EP1012474B1 (en) Stick coil for ignition systems
DE102004063293B4 (en) Fuel injector for an internal combustion engine
EP0304037B1 (en) Ignition system for combustion engines
DE102006040249A1 (en) Ignition coil, in particular for an internal combustion engine in a motor vehicle
DE4344450C2 (en) Ignition coil for internal combustion engines
EP0967690B1 (en) Method for connecting a thin wire with a current conducting contact element and products of this process

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: 20050607

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 IT LI LU MC NL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20091209

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20150223

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RBV Designated contracting states (corrected)

Designated state(s): DE FR IT

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR IT

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 50315278

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 50315278

Country of ref document: DE

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: 20160223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150520

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20160331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150731

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

Ref country code: DE

Payment date: 20220927

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 50315278

Country of ref document: DE