EP0242354B1 - Ignition device with a high voltage connection - Google Patents

Ignition device with a high voltage connection Download PDF

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Publication number
EP0242354B1
EP0242354B1 EP85905053A EP85905053A EP0242354B1 EP 0242354 B1 EP0242354 B1 EP 0242354B1 EP 85905053 A EP85905053 A EP 85905053A EP 85905053 A EP85905053 A EP 85905053A EP 0242354 B1 EP0242354 B1 EP 0242354B1
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EP
European Patent Office
Prior art keywords
ignition
ignition device
winding
housing recess
contact pin
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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
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EP85905053A
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German (de)
French (fr)
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EP0242354A1 (en
Inventor
Emil Buchschmid
Manfred Hüttinger
Hans-Dieter Schmid
Horst-Günter STEFFEN
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Robert Bosch GmbH
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Robert Bosch GmbH
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/12—Ignition, e.g. for IC engines

Definitions

  • the invention relates to an ignition device with a high voltage connection according to the preamble of the main claim.
  • a known high-voltage connection of an ignition device (DE-OS-3 205 714)
  • the winding end of the secondary winding of an ignition armature is twisted several times and then passed through a hole in the connection tower of an ignition cable.
  • a contact pin will. pressed with its rear end into the bore and thereby contacted in the peripheral region with the twisted winding end.
  • the twisted winding end protruding from the bore is then removed and the housing cup with the primary and secondary windings of the ignition armature is cast with casting resin.
  • the ignition cable end can now be placed on the contact pin arranged in the hole in the connection tower.
  • the high-voltage connection of the ignition device according to the invention with the characterizing features of the main claim has the advantage over the known solution that the thin wire end of the high-voltage winding no longer has to be fixed to the coil former for protection against unintentional unwinding, but that it is immediately wound mechanically around the solid wire used in the coil former and can be electrically contacted with it.
  • Another advantage is that when the contact pin is pressed into the hole in the connection tower, the solid wire is reliably contacted with the contact pin. A twisting of the winding end is no longer necessary, since with this solution there is no longer any danger that the very thin winding wire will be squeezed out when the contact pin is pressed in.
  • the end region of the solid wire received in the housing recess is bent at right angles to the end fastened in the coil former. This measure ensures that when the bobbin is mechanically inserted with the primary and secondary windings into the housing, the solid wire is received in the correct place in the housing recess.
  • the housing recess is advantageously formed in a housing cup that receives the primary and secondary windings.
  • FIG. 1 shows a magneto ignition system with an ignition armature, in the high-voltage connection of which an ignition cable is inserted
  • FIG. 2 shows a longitudinal section through the high-voltage connection on an enlarged scale
  • FIG. 3 shows a part of the housing cup with the coil former inserted therein in a top view
  • FIG. 4 shows a second exemplary embodiment a housing cup with a cross section through the high-voltage connection on an enlarged scale
  • Figure 5 shows a part of the housing cup with the coil body in plan view.
  • the magnetic ignition system for an internal combustion engine shown in FIG. 1 consists of an ignition armature 10 and a rotating magnet system 11.
  • the magnet system 11 has a permanent magnet 12 and two pole shoes 13 arranged laterally therefrom.
  • the permanent magnet] 2 and the pole shoes 13 are on the circumference of one of the internal combustion engine driven disk 14 or embedded in the fan wheel of the motor, of which only a breakout is shown.
  • the ignition armature 10 serves to generate the ignition energy. It is also an ignition transformer for generating a high voltage pulse at the time of ignition.
  • a housing cup 17 made of insulating material is placed on the middle leg 16a of the E-shaped iron core 16 in that a primary winding 18 recognizable in FIG. 3 and a secondary winding 19 recognizable in FIG. 2 are arranged concentrically one above the other.
  • the secondary winding 19 is connected with its high-voltage side winding end via a high-voltage connection 20 to an ignition cable 21, which leads to a spark plug 22 shown symbolically.
  • the primary and secondary windings 18 and 19 are cast together with the electronic switching elements, not shown, in the housing cup 17 with casting resin.
  • the ignition system can be short-circuited on the primary side via a tab 23 on a shutoff switch (not shown) in order to shut down the internal combustion engine in this way.
  • the high-voltage connection 20 of the secondary winding 19 consists of a connection tower 24, into the opening 25 of which the end of the ignition cable 21 is screwed and through a grommet 26 is sealed against moisture.
  • the secondary winding 19 is wound as a high-voltage winding in winding chambers lying axially one above the other of a coil body 27 molded from insulating material, the individual winding parts being separated from one another by webs 28.
  • the upper web 28a between the last and penultimate winding part of the secondary winding 19 is made somewhat thicker.
  • a piece of solid wire 29 with one end 29a is inserted radially into a corresponding bore.
  • the high-voltage side end 30 of the very thin winding wire of the secondary winding is wound several times around the solid wire 29 projecting from the web 28a and is soldered to it.
  • the other end region 29b of the solid wire 29 is bent downwards at right angles and received in a housing recess 31 on the connection tower 24 of the housing cup 17.
  • an outwardly tapering contact pin 32 which is pressed into the housing recess 31 with its bolt-shaped rear end 32a.
  • the housing recess 31 is here in the form of an upwardly open trough which runs into a bore at the bottom of the opening 25 of the connection tower 24, into which the bolt-shaped end 32a of the contact pin 32 is inserted.
  • the housing recess 3 which is designed as a trough, is provided with a laterally adjacent blind hole 33 for receiving the lower end region 29b of the solid wire 29, which is expanded in a funnel shape at the top for better insertion of the solid wire 29.
  • the primary winding 18 and the secondary winding 19 are wound separately from one another and then pushed into one another concentrically and interconnected.
  • the primary winding 18 is arranged on the inside and the secondary winding 19 with its coil former 27 on the outside.
  • the solid wire 29 is inserted with its end 29a into the web 28a of the coil former 27 and wrapped and contacted several times by the end 30 of the secondary winding 19.
  • the free end region 29b of the solid wire 29 is bent downwards at right angles and the structural unit thus prefabricated is now inserted into the housing cup 17.
  • the end region 29b of the solid wire 29 is received in the blind hole 33 on the housing recess 31.
  • the contact pin 32 is now inserted from the outside into the opening 25 of the connection tower 24 formed on the outside of the housing cup 17, its bolt-shaped rear end 32a being pressed into the housing recess 31 and being contacted with the end region 29b of the solid wire 29.
  • the housing cup 17 is poured out with casting resin in a manner not shown, the housing recess 31 also being filled with casting resin and the contact pin 32 being anchored therein in a form-fitting manner.
  • FIGS. 4 and 5 show, in an enlarged representation, a further exemplary embodiment of an ignition anchor with the features of the present invention.
  • the same reference numbers are used for the same parts of the ignition armature.
  • a connection tower 35 with its contact pin 36 is inserted as a preassembled unit in a corresponding shape 37 of the housing cup 17a.
  • the bolt-shaped rear end 36a of the contact pin 36 is here pressed vertically from above into a housing recess 38 designed as a blind hole in the region of the formation 37 of the housing cup 17.
  • the blind hole 38 is provided here with a laterally adjoining trough 39, which is expanded in a funnel shape at the top for the introduction of the solid wire 29.
  • the connection tower 35 with the contact pin 36 as a preassembled unit is pressed into the housing recess 38 in the form of a blind hole and contacted with the solid wire 29.
  • the connection tower 35 is then embedded together with the other components in the housing cup 17a in casting resin.
  • a contact lug 40 which can be seen in FIG. 4, serves as a ground connection to the iron core 16 of the ignition anchor according to FIG. 1, in which the latter is bent toward the middle leg 16a of the iron core 16 and clamped between it and a chimney 41 of the housing cup 17a.
  • the invention is not limited to the two exemplary embodiments shown, since both the arrangement and shape of the solid wire 29 on the bobbin 27 of the secondary winding and the arrangement and shape of the housing recess 31 and 38 can be changed according to the respective requirements without leaving the solution principle , which consists in using a solid wire for contacting a high-voltage connection with the end of a high-voltage winding, which on the one hand is inserted with one end into a coil body carrying the high-voltage winding and is wrapped several times from the end of the high-voltage winding and is received in a housing recess on the connection tower with the other end region , in which the pin is pressed with its bolt-shaped rear end and contacted with the solid wire.
  • This solution principle is not only to be used for ignition armatures, but also in the same way for ignition coils and other windings which are provided with a high-voltage connection.

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

Abstract

The device has a high voltage connection that serves to connect an ignition cable. In order to permit automatic contact between the end (30) of the high voltage winding (19) and a contact rod (32) of the high voltage connection (20), the end of the winding (30) is wound around a piece of massive wire (29), which has one end in the spool body bearing the high voltage winding, and the other end in an opening (31) in the connection tower (24), into which the contact rod (32) with its bolt shaped posterior end (32a) is pressed and brought into contact with the massive wire (29). This solution is intended in general for the connection of high voltage windings, more particularly for connection of an ignition cable to a coil or to an ignition armature.

Description

Die Erfindung geht aus von einer Zündvorrichtung mit einem Hochspannungsanschluß nach der Gattung des Hauptanspruchs. Bei einem bekannten Hochspannungsanschluß einer Zündvorrichtung (DE-OS-3 205 714) wird das Wicklungsende der Sekundärwicklung eines Zündankers mehrfach verdrillt und dann durch eine Bohrung im Anschlußturm eines Zündkabels geführt. Ein Kontaktstift wird. mit seinem hinteren Ende in die Bohrung eingepreßt und dabei im Umfangsbereich mit dem verdrillten Wicklungsende kontaktiert. Danach wird das aus der Bohrung vorstehende verdrillte Wicklungsende entfernt und der Gehäusebecher mit der Primär- und Sekundärwicklung des Zündankers wird mit Gießharz vergossen. Auf den in der Bohrung des Anschlußturmes angeordneten Kontaktstift kann nun das Zündkabelende aufgesetzt werden.The invention relates to an ignition device with a high voltage connection according to the preamble of the main claim. In a known high-voltage connection of an ignition device (DE-OS-3 205 714), the winding end of the secondary winding of an ignition armature is twisted several times and then passed through a hole in the connection tower of an ignition cable. A contact pin will. pressed with its rear end into the bore and thereby contacted in the peripheral region with the twisted winding end. The twisted winding end protruding from the bore is then removed and the housing cup with the primary and secondary windings of the ignition armature is cast with casting resin. The ignition cable end can now be placed on the contact pin arranged in the hole in the connection tower.

Derartige Lösungen sind insofern umständlich und zeitaufwendig herzustellen, als das verdrillte Wicklungsende der Hochspannungswicklung von Hand in den Anschlußturm eingeführt werden muß. Mit der vorliegenden Lösung wird angestrebt, den Hochspannungsanschluß so zu gestalten, daß das sehr dünne Drahtende der Hochspannungswicklung mit dem Kontaktstift im Anschlußturm durch maschinell auszuführende Arbeitsgänge elektrisch verbunden wird.Such solutions are cumbersome and time-consuming to manufacture insofar as the twisted winding end of the high-voltage winding has to be inserted into the connection tower by hand. The aim of the present solution is to design the high-voltage connection in such a way that the very thin wire end of the high-voltage winding is electrically connected to the contact pin in the connection tower by means of machine operations.

Vorteile der ErfindungAdvantages of the invention

Der erfindungsgemäße Hochspannungsanschluß der Zündvorrichtung mit den kennzeichnenden Merkmalen des Hauptanspruchs hat gegenüber der bekannten Lösung den Vorteil, daß das dünne Drahtende der Hochspannungswicklung nicht mehr am Spulenkörper zum Schutz gegen ein unbeabsichtigtes Abwickeln festgelegt werden muß sondern daß es sogleich maschinell um den im Spulenkörper eingesetzten Massivdraht gewickelt und mit ihm elektrisch kontaktiert werden kann. Ein weiterer Vorteil besteht darin, daß mit dem Einpressen des Kontaktstiftes in die Bohrung des Anschlußturmes zugleich eine zuverlässige Kontaktierung des Massivdrahtes mit dem Kontaktstift erfolgt. Eine Verdrillung des Wicklungsendes ist nicht mehr erforderlich, da bei dieser Lösung nicht mehr die Gefahr besteht, daß der sehr dünne Wicklungsdraht beim Einpressen des Kontaktstiftes abgequetscht wird.The high-voltage connection of the ignition device according to the invention with the characterizing features of the main claim has the advantage over the known solution that the thin wire end of the high-voltage winding no longer has to be fixed to the coil former for protection against unintentional unwinding, but that it is immediately wound mechanically around the solid wire used in the coil former and can be electrically contacted with it. Another advantage is that when the contact pin is pressed into the hole in the connection tower, the solid wire is reliably contacted with the contact pin. A twisting of the winding end is no longer necessary, since with this solution there is no longer any danger that the very thin winding wire will be squeezed out when the contact pin is pressed in.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen Merkmale möglich. Besonders vorteilhaft ist es, wenn der in der Gehäuseausnehmung aufgenommene Endbereich des Massivdrahtes zu dem im Spulenkörper befestigten Ende rechtwinklig abgebogen ist. Durch diese Maßnahme wird sichergestellt, daß beim maschinellen Einsetzen des Spulenkörpers mit der Primär- und Sekundärwicklung in das Gehäuse der Massivdraht an der richtigen Stelle in der Gehäuseausnehmung aufgenommen wird. Die Gehäuseausnehmung ist dabei in vorteilhafter Weise in einen die Primär- und Sekundärwicklung aufnehmenden Gehäusebecher eingeformt.Advantageous further developments and improvements of the features specified in the main claim are possible through the measures listed in the subclaims. It is particularly advantageous if the end region of the solid wire received in the housing recess is bent at right angles to the end fastened in the coil former. This measure ensures that when the bobbin is mechanically inserted with the primary and secondary windings into the housing, the solid wire is received in the correct place in the housing recess. The housing recess is advantageously formed in a housing cup that receives the primary and secondary windings.

Zeichnungdrawing

In der Zeichnung sind zwei Ausführungsbeispiele der Erfindung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 eine Magnetzündanlage mit einem Zündanker, in dessen Hochspannungsanschluß ein Zündkabel eingesetzt ist, Figur 2 einen Längsschnitt durch den Hochspannungsanschluß in vergrößertem Maßstab und Figur 3 einen Teil des Gehäusebechers mit dem darin eingesetzten Spulenkörper in der Draufsicht, Figur 4 zeigt als zweites Ausführungsbeispiel einen Gehäusebecher mit einem Querschnitt durch den Hochspannungsanschluß in vergrößertem Maßstab und Figur 5 zeigt einen Teil des Gehäusebechers mit dem Spulenkörper in der Draufsicht.Two exemplary embodiments of the invention are shown in the drawing and explained in more detail in the description below. FIG. 1 shows a magneto ignition system with an ignition armature, in the high-voltage connection of which an ignition cable is inserted, FIG. 2 shows a longitudinal section through the high-voltage connection on an enlarged scale, and FIG. 3 shows a part of the housing cup with the coil former inserted therein in a top view, FIG. 4 shows a second exemplary embodiment a housing cup with a cross section through the high-voltage connection on an enlarged scale and Figure 5 shows a part of the housing cup with the coil body in plan view.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Die in Figur 1 dargestellte Magnetzündanlage für eine Brennkraftmaschine besteht aus einem Zündanker 10 und einem umlaufenden Magnetsystem 11. Das Magnetsystem 11 hat einen Dauermagneten 12 und zwei seitlich davon angeordnete Polschuhe 13. Der Dauermagnet ]2 und die Polschuhe 13 sind am Umfang einer von der Brennkraftmaschine angetriebenen Scheibe 14 bzw. im Lüfterrad des Motors eingebettet, wovon nur ein Ausbruch dargestellt ist. Am Außenumfang der Scheibe 14 ist der Zündanker 10 durch Befestigungslöcher 15 am Motorgehäuse oder dgl. festgeschraubt. Der Zündanker 10 dient zur Erzeugung der Zündenergie. Er ist zugleich Zündtransformator zur Erzeugung eines Hochspannungsimpulses im Zündzeitpunkt. Zu diesem Zweck ist auf dem mittleren Schenkel 16a des E-förmigen Eisenkernes 16 ein Gehäusebecher 17 aus Isolierstoff aufgesetzt, indem eine in Figur 3 erkennbare Primärwicklung 18 und eine in Figur 2 erkennbare Sekundärwicklung 19 konzentrisch übereinander angeordnet sind. Die Sekundärwicklung 19 ist mit ihrem hochspannungsseitigen Wicklungsende über einen Hochspannungsanschluß 20 an ein Zündkabel 21 angeschlossen, das zu einer symbolisch dargestellten Zündkerze 22 führt. Die Primär- und Sekundärwicklungen 18 und 19 sind gemeinsam mit dem nicht dargestellten elektronischen Schaltelementen in dem Gehäusebecher 17 rnit Gießharz vergossen. Über eine Flachsteckzunge 23 kann die Zündanlage über einen nicht dargestellten Abstellschalter primärseitig kurzgeschlossen werden, um auf diese Weise die Brennkraftmaschine stillzusetzen. Der Hochspannungsanschluß 20 der Sekundärwicklung 19 besteht aus einem Anschlußturm 24, in dessen Öffnung 25 das Ende des Zündkabels 21 eingeschraubt und durch eine Tülle 26 gegen Feuchtigkeit abgedichtet ist.The magnetic ignition system for an internal combustion engine shown in FIG. 1 consists of an ignition armature 10 and a rotating magnet system 11. The magnet system 11 has a permanent magnet 12 and two pole shoes 13 arranged laterally therefrom. The permanent magnet] 2 and the pole shoes 13 are on the circumference of one of the internal combustion engine driven disk 14 or embedded in the fan wheel of the motor, of which only a breakout is shown. On the outer periphery of the disc 14, the ignition anchor 10 is screwed through fastening holes 15 on the engine housing or the like. The ignition armature 10 serves to generate the ignition energy. It is also an ignition transformer for generating a high voltage pulse at the time of ignition. For this purpose, a housing cup 17 made of insulating material is placed on the middle leg 16a of the E-shaped iron core 16 in that a primary winding 18 recognizable in FIG. 3 and a secondary winding 19 recognizable in FIG. 2 are arranged concentrically one above the other. The secondary winding 19 is connected with its high-voltage side winding end via a high-voltage connection 20 to an ignition cable 21, which leads to a spark plug 22 shown symbolically. The primary and secondary windings 18 and 19 are cast together with the electronic switching elements, not shown, in the housing cup 17 with casting resin. The ignition system can be short-circuited on the primary side via a tab 23 on a shutoff switch (not shown) in order to shut down the internal combustion engine in this way. The high-voltage connection 20 of the secondary winding 19 consists of a connection tower 24, into the opening 25 of which the end of the ignition cable 21 is screwed and through a grommet 26 is sealed against moisture.

Wie Figur 2 und 3 zeigen, ist die Sekundärwicklung 19 als Hochspannungswicklung in axial übereinanderliegenden Wicklungskammern eines aus Isolierstoff gespritzten Spulenkörpers 27 gewickelt, wobei die einzelnen Wicklungsteile durch Stege 28 voneinander getrennt sind. Der obere Steg 28a zwischen dem letzten und vorletzten Wicklungsteil der Sekundärwicklung 19 ist etwas dicker ausgebildet. In ihm wird ein Stück Massivdraht 29 mit einem Ende 29a in eine entsprechende Bohrung radial eingesetzt. Um den aus dem Steg 28a vorstehenden Massivdraht 29 ist das hochspannungsseitige Ende 30 des sehr dünnen Wicklungsdrahtes der Sekundärwicklung mehrfach herumgewickelt und mit ihm verlötet. Der andere Endbereich 29b des Massivdrahtes 29 ist rechtwinklig nach unten abgebogen und in einer Gehäuseausnehmung 31 am Anschlußturm 24 des Gehäusebechers 17 aufgenommen. In der Öffnung 25 des Anschlußturmes 20 sitzt ein nach außen spitz zulaufender Kontaktstift 32, der mit seinem bolzenförmigen hinteren Ende 32a in die Gehäuseausnehmung 31 eingepreßt ist. Die Gehäuseausnehmung 31 ist hier in Form einer nach oben offenen Mulde ausgebildet, die in eine Bohrung am Grunde der Öffnung 25 des Anschlußturmes 24 ausläuft, in welche das bolzenförmige Ende 32a des Kontaktstiftes 32 eingesetzt ist. Mit dem Einpressen des Kontaktstiftes 32 in die Gehäuseausnehmung 31 wird das bolzenförmige hintere Ende 32a gleichzeitig mit dem unteren Endabschnitt 29b des Massivdrahtes 29 kontaktiert. Zu diesem Zweck ist die als Mulde ausgebildete Gehäuseausnehmung 3] mit einem seitlich angrenzenden Sackloch 33 für die Aufnahme des unteren Endbereiches 29b des Massivdrahtes 29 versehen, die oben zur besseren Einführung des Massivdrahtes 29 trichterförmig erweitert ist.As FIGS. 2 and 3 show, the secondary winding 19 is wound as a high-voltage winding in winding chambers lying axially one above the other of a coil body 27 molded from insulating material, the individual winding parts being separated from one another by webs 28. The upper web 28a between the last and penultimate winding part of the secondary winding 19 is made somewhat thicker. In it, a piece of solid wire 29 with one end 29a is inserted radially into a corresponding bore. The high-voltage side end 30 of the very thin winding wire of the secondary winding is wound several times around the solid wire 29 projecting from the web 28a and is soldered to it. The other end region 29b of the solid wire 29 is bent downwards at right angles and received in a housing recess 31 on the connection tower 24 of the housing cup 17. In the opening 25 of the connection tower 20 sits an outwardly tapering contact pin 32, which is pressed into the housing recess 31 with its bolt-shaped rear end 32a. The housing recess 31 is here in the form of an upwardly open trough which runs into a bore at the bottom of the opening 25 of the connection tower 24, into which the bolt-shaped end 32a of the contact pin 32 is inserted. When the contact pin 32 is pressed into the housing recess 31, the bolt-shaped rear end 32a is simultaneously contacted with the lower end section 29b of the solid wire 29. For this purpose, the housing recess 3], which is designed as a trough, is provided with a laterally adjacent blind hole 33 for receiving the lower end region 29b of the solid wire 29, which is expanded in a funnel shape at the top for better insertion of the solid wire 29.

Bei der Herstellung des Zündankers 10 werden Primärwicklung 18 und Sekundärwicklung 19 getrennt voneinander gewickelt und dann konzentrisch ineinandergeschoben und miteinander verschaltet. Dabei ist die Primärwicklung 18 innen und die Sekundärwicklung 19 mit ihrem Spulenkörper 27 außen angeordnet. Nach dem Wickeln der Sekundärwicklung 19 wird der Massivdraht 29 mit seinem Ende 29a in den Steg 28a des Spulenkörpers 27 eingesetzt und von dem Ende 30 der Sekundärwicklung 19 mehrfach umwickelt und kontaktiert. Danach wird der freie Endbereich 29b des Massivdrahtes 29 rechtwinklig nach unten abgebogen und die so vorgefertigte Baueinheit wird nun in den Gehäusebecher 17 eingesetzt. Dabei wird der Endbereich 29b des Massivdrahtes 29 in dem Sackloch 33 an der Gehäuseausnehmung 31 aufgenommen. Des weiteren wird nun der Kontaktstift 32 von außen in die Öffnung 25 des außen am Gehäusebecher 17 angeformten Anschlußturmes 24 eingesetzt, wobei sein bolzenförmiges hinteres Ende 32a in die Gehäuseausnehmung 31 eingepreßt und mit dem Endbereich 29b des Massivdrahtes 29 kontaktiert wird. Schließlich wird der Gehäusebecher 17 in nicht dargestellter Weise mit Gießharz ausgegossen, wobei auch die Gehäuseausnehmung 31 mit Gießharz ausgefüllt und der Kontaktstift 32 darin formschlüssig verankert wird.In the manufacture of the ignition armature 10, the primary winding 18 and the secondary winding 19 are wound separately from one another and then pushed into one another concentrically and interconnected. The primary winding 18 is arranged on the inside and the secondary winding 19 with its coil former 27 on the outside. After the secondary winding 19 has been wound, the solid wire 29 is inserted with its end 29a into the web 28a of the coil former 27 and wrapped and contacted several times by the end 30 of the secondary winding 19. Thereafter, the free end region 29b of the solid wire 29 is bent downwards at right angles and the structural unit thus prefabricated is now inserted into the housing cup 17. The end region 29b of the solid wire 29 is received in the blind hole 33 on the housing recess 31. Furthermore, the contact pin 32 is now inserted from the outside into the opening 25 of the connection tower 24 formed on the outside of the housing cup 17, its bolt-shaped rear end 32a being pressed into the housing recess 31 and being contacted with the end region 29b of the solid wire 29. Finally, the housing cup 17 is poured out with casting resin in a manner not shown, the housing recess 31 also being filled with casting resin and the contact pin 32 being anchored therein in a form-fitting manner.

Die Figuren 4 und 5 zeigen in vergrößerter Darstellung ein weiteres Ausführungsbeispiel eines Zündankers mit den Merkmalen der vorliegenden Erfindung. Bei diesem Ausführungsbeispiel werden für die gleichen Teile des Zündankers gleiche Bezugszahlen verwendet. Anstelle des bei dem ersten Ausführungsbeispiel außen am Gehäusebecher angeformten Anschlußturmes 24 ist hier ein Anschlußturm 35 mit seinem Kontaktstift 36 als vormontierte Einheit in eine entsprechende Ausformung 37 des Gehäusebechers 17a eingesetzt. Das bolzenförmige hintere Ende 36a des Kontaktstiftes 36 ist hier senkrecht von oben in eine als Sackloch ausgebildete Gehäuseausnehmung 38 im Bereich der Ausformung 37 des Gehäusebechers 17 eingepreßt. Für die Aufnahme des Endbereiches 29b des Massivdrahtes 29 ist hier das Sackloch 38 mit einer seitlich angrenzenden Mulde 39 versehen, die oben zur Einführung des Massivdrahtes 29 trichterförmig erweitert ist. Nach dem Einsetzen der Primär- und Sekundärwicklung 18, 19 in den Gehäusebecher 17a wird hier - anders als beim ersten Ausführungsbeispiel - der Anschlußturm 35 mit dem Kontaktstift 36 als vormontierte Einheit in die als Sackloch ausgebildete Gehäuseausnehmung 38 eingepreßt und mit dem Massivdraht 29 kontaktiert. Der Anschlußturm 35 wird anschließend zusammen mit den anderen Bauteilen im Gehäusebecher 17a in Gießharz eingebettet. Eine in Figur 4 erkennbare Kontaktfahne 40 dient als Masseverbindung mit dem Eisenkern 16 des Zündankers gemäß Figur 1, in dem diese zum mittleren Schenkel 16a des Eisenkernes 16 hin umgebogen und zwischen ihm und einem Kamin 41 des Gehäusebechers 17a eingespannt ist.FIGS. 4 and 5 show, in an enlarged representation, a further exemplary embodiment of an ignition anchor with the features of the present invention. In this exemplary embodiment, the same reference numbers are used for the same parts of the ignition armature. Instead of the connection tower 24 formed on the outside of the housing cup in the first exemplary embodiment, here a connection tower 35 with its contact pin 36 is inserted as a preassembled unit in a corresponding shape 37 of the housing cup 17a. The bolt-shaped rear end 36a of the contact pin 36 is here pressed vertically from above into a housing recess 38 designed as a blind hole in the region of the formation 37 of the housing cup 17. For receiving the end region 29b of the solid wire 29, the blind hole 38 is provided here with a laterally adjoining trough 39, which is expanded in a funnel shape at the top for the introduction of the solid wire 29. After the primary and secondary windings 18, 19 have been inserted into the housing cup 17a, in contrast to the first exemplary embodiment, the connection tower 35 with the contact pin 36 as a preassembled unit is pressed into the housing recess 38 in the form of a blind hole and contacted with the solid wire 29. The connection tower 35 is then embedded together with the other components in the housing cup 17a in casting resin. A contact lug 40, which can be seen in FIG. 4, serves as a ground connection to the iron core 16 of the ignition anchor according to FIG. 1, in which the latter is bent toward the middle leg 16a of the iron core 16 and clamped between it and a chimney 41 of the housing cup 17a.

Die Erfindung ist nicht auf die dargestellten zwei Ausführungsbeispiele beschränkt, da sowohl die Anordnung und Form des Massivdrahtes 29 am Spulenkörper 27 der Sekundärwicklung als auch die Anordnung und Gestalt der Gehäuseausnehmung 31 und 38 den jeweiligen Erfordernissen entsprechend geändert werden können, ohne dabei das Lösungsprinzip zu verlassen, das darin besteht, zur Kontaktierung eines Hochspannungsanschlusses mit dem Ende einer Hochspannungswicklung einen Massivdraht zu verwenden, der einerseits mit einem Ende in einen die Hochspannungswicklung tragenden Spulenkörper eingesetzt ist vom Ende der Hochspannungswicklung mehrfach umschlungen und mit dem anderen Endbereich in einer Gehäuseausnehmung am Anschlußturm aufgenommen ist, in welche der Kontaktstift mit seinem bolzenförmigen hinteren Ende eingepreßt und mit dem Massivdraht kontaktiert ist. Dieses Lösungsprinzip ist nicht nur bei Zündankern, sondern in gleicher Weise auch bei Zündspulen und anderen Wicklungen anzuwenden, die mit einem Hochspannungsanschluß versehen sind.The invention is not limited to the two exemplary embodiments shown, since both the arrangement and shape of the solid wire 29 on the bobbin 27 of the secondary winding and the arrangement and shape of the housing recess 31 and 38 can be changed according to the respective requirements without leaving the solution principle , which consists in using a solid wire for contacting a high-voltage connection with the end of a high-voltage winding, which on the one hand is inserted with one end into a coil body carrying the high-voltage winding and is wrapped several times from the end of the high-voltage winding and is received in a housing recess on the connection tower with the other end region , in which the pin is pressed with its bolt-shaped rear end and contacted with the solid wire. This solution principle is not only to be used for ignition armatures, but also in the same way for ignition coils and other windings which are provided with a high-voltage connection.

Claims (7)

1. Ignition device with a high-voltage junction for an ignition cable (21), in which the ignition-cable end is to be introduced into an orifice of a junction nipple (24) and an outwardly tapering contact pin (32) anchored at the bottom of the orifice is to make contact with the ignition cable (21), the contact pin (32) being electrically connected to the end of a high-voltage winding of the ignition device, characterized in that the end (30) of the high-voltage winding (19) is wound, to make contact, around a piece of solid wire (29) which at one end (29a) is inserted into a coil form (27) carrying the high-vottage winding (19) and with the other end region (29b) is received in a housing recess (31, 38) which is located at the junction nipple (24, 35) and into which the contact pin (32, 36) is pressed with its bolt-shaped rear end (32a, 36a) and makes contact with the solid wire (29).
2. Ignition device according to Claim 1, characterized in that the end region (29b) of the solid wire (29) received in the housing recess (31, 38) is bent at right angles from the end (29a) fastened in the coil form (27).
3. Ignition device according to Claim 1 or 2, characterized in that the housing recess (31, 38) is formed in a housing bowl (17, 17a) of an ignition armature (10) , in which a primary and a secondary winding (17, 18) are arranged.
4. Ignition device according to Claim 3, characterized in that the junction nipple (35) together with the contact pin (36) is pressed as a preassembled unit into the housing recess (38) and together with the other components (18, 19, 27) in the housing bowl (17a) is embedded in casting resin.
5. Ignition device according to Claim 3, characterized in that the junction nipple (24) is formed on the outside of the housing bowl (17) in the region of the housing recess (31).
6. Ignition device according to one of the preceding claims, characterized in that the housing recess (31) is designed as a trough for the end (32a) of the contact pin (32), with a laterally adjacent blind hole (33) for receiving the end region (29b) of the solid wire (29).
7. Ignition device according to one of Claims 1 to 5, characterized in that the housing recess (38) is designed as a blind hold for the end (36a) of the contact pin (36), with a laterally adjacent trough (39) for receiving the end region (29b) of the solid wire (29).
EP85905053A 1985-02-27 1985-10-05 Ignition device with a high voltage connection Expired - Lifetime EP0242354B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853506929 DE3506929A1 (en) 1985-02-27 1985-02-27 IGNITION DEVICE WITH A HIGH VOLTAGE CONNECTION
DE3506929 1985-02-27

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EP0242354A1 EP0242354A1 (en) 1987-10-28
EP0242354B1 true EP0242354B1 (en) 1990-03-21

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EP85905053A Expired - Lifetime EP0242354B1 (en) 1985-02-27 1985-10-05 Ignition device with a high voltage connection

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US (1) US4740773A (en)
EP (1) EP0242354B1 (en)
JP (1) JPS62501945A (en)
DE (2) DE3506929A1 (en)
WO (1) WO1986005315A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3741033A1 (en) * 1987-12-03 1989-06-15 Mitsubishi Electric Corp High-voltage transformer, and a method for its production
ES2057622T3 (en) * 1990-03-08 1994-10-16 Nippon Denso Co IGNITION COIL FOR AN INTERNAL COMBUSTION ENGINE.
DE4032280A1 (en) * 1990-10-11 1992-04-16 Bosch Gmbh Robert HIGH VOLTAGE CONNECTIONS TO IGNITION COILS
JP3229515B2 (en) * 1995-05-08 2001-11-19 三菱電機株式会社 Ignition device for internal combustion engine

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447376A (en) * 1943-05-28 1948-08-17 Bendix Aviat Corp Ignition apparatus
US2571769A (en) * 1947-09-27 1951-10-16 Bendix Aviat Corp Ignition device
US2511693A (en) * 1948-06-24 1950-06-13 Ingraham E Co Electric connecting means for electric coils
US3175176A (en) * 1961-06-02 1965-03-23 Phelon Co Inc Electrical connection means in ignition coil unit or the like
US3909759A (en) * 1974-04-08 1975-09-30 Gen Electric Bushing well for instrument transformer and transformers including such well
CH600521A5 (en) * 1976-05-10 1978-06-15 Landis & Gyr Ag
US4232284A (en) * 1979-05-07 1980-11-04 Power Parts, Inc. Ignition coil and electrical connector therefor
JPS608412Y2 (en) * 1980-03-12 1985-03-25 三洋電機株式会社 flyback transformer
FR2526992B1 (en) * 1982-05-12 1986-04-25 Bosch Gmbh Robert IGNITION COIL FOR IGNITION INSTALLATION OF INTERNAL COMBUSTION ENGINE
DE3301224A1 (en) * 1982-11-26 1984-05-30 Robert Bosch Gmbh, 7000 Stuttgart IGNITION COIL FOR IGNITION SYSTEMS FOR INTERNAL COMBUSTION ENGINES
DE3400870A1 (en) * 1984-01-12 1985-07-25 Vdo Adolf Schindling Ag, 6000 Frankfurt INDUCTIVE

Also Published As

Publication number Publication date
JPS62501945A (en) 1987-07-30
EP0242354A1 (en) 1987-10-28
DE3576758D1 (en) 1990-04-26
US4740773A (en) 1988-04-26
WO1986005315A1 (en) 1986-09-12
DE3506929A1 (en) 1986-08-28

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