EP0248977A1 - Electrical ignition and method for its production - Google Patents

Electrical ignition and method for its production Download PDF

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Publication number
EP0248977A1
EP0248977A1 EP87102055A EP87102055A EP0248977A1 EP 0248977 A1 EP0248977 A1 EP 0248977A1 EP 87102055 A EP87102055 A EP 87102055A EP 87102055 A EP87102055 A EP 87102055A EP 0248977 A1 EP0248977 A1 EP 0248977A1
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EP
European Patent Office
Prior art keywords
ignition
contact pins
ignition bridge
ceramic body
outer ring
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Granted
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EP87102055A
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German (de)
French (fr)
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EP0248977B1 (en
Inventor
Richard Dr. Bender
Anton Bretfeld
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Dynamit Nobel AG
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Dynamit Nobel AG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/12—Bridge initiators
    • F42B3/124—Bridge initiators characterised by the configuration or material of the bridge

Definitions

  • the invention relates to the object described above.
  • an ignition set including an electrical ignition means which consists of an electrically conductive housing and an insulated arranged therein and accessible from the outside pole piece, this pole piece is electrically conductively connected to the housing via an ignition bridge.
  • an insulating body made of glass or ceramic with metal layer contacts that are in contact with the primer and partly with a firing bridge made of tantalum or tantalum nitride are covered.
  • One of the metal layer contacts which can consist of nickel, palladium as well as palladium-silver, palladium-gold, platinum-silver, platinum-gold and silver-aluminum alloys, is located with the pole piece via a bore lined with conductive material in the insulating body in an electrically conductive connection, while the ground connection to the outer housing is formed with a support ring which presses the insulating body containing the metal layer contacts against the pole piece.
  • these so-called single-pole electrical ignition devices can only be produced in a comparatively complex process, since the ignition bridge must be contacted with many parts of the ignition device.
  • the invention has for its object to make an electrical ignition bridge carrier available, which does not have the disadvantages of the previously known constructions and is mechanically highly resilient. At the same time, a process is to be developed for the production of this ignition bridge carrier, which can be carried out comparatively simply without complex post-processing, but with great certainty with regard to the process products and their properties.
  • an electrical ignition bridge carrier for the ignition of ignition kits, delay kits and pyrotechnic mixtures as well as for the ignition of primary primers and kits, which is characterized in that it consists of a ceramic body 2 with one or more bores inserted into a metallic outer ring 1, in the solid or tubular contact pins 3 as current supply lines are tightly and tightly fitted and are surrounded by a conductive layer 4, between which the ignition bridge 5 is located.
  • Stainless steel which can also be used as a material for the contact pins 3, has proven particularly useful as the material for the metallic outer ring 1.
  • other metallic materials for the metallic outer ring 1 and / or the contact pins 3 for example aluminum, copper, nickel and their alloys, titanium, zirconium, tantalum and other heat-resistant and high-melting metals and alloys, in particular also the cobalt-nickel-iron alloy known under the name KOVAR.
  • Ceramic materials can be used as materials for the ceramic body 2, in particular those based on aluminum oxide, silicon dioxide, silicon nitride, silicon carbide and zirconium dioxide.
  • the tight and firm connection or fitting between the metallic outer ring 1 and the ceramic body 2 on the one hand and between the ceramic body 2 and the contact pins 3 on the other hand can be done by gluing using adhesives known to the person skilled in the art, but also by cementing, but preferably by Glazed in.
  • the materials known to any person skilled in the art, with which metallic materials and ceramic materials are tightly bonded, can be used for the preferred glazing.
  • alkali and alkaline earth silicate glasses, glasses based on borosilicate and glasses containing oxides of rare earth have proven particularly useful.
  • a glass which is suitable for this glazing connection between metallic and ceramic material a glass of the following composition can be used:
  • ceramic pastes for example the pastes shown below in their composition:
  • Silicon or silicon alloys mixed with quartz powder, glass powder and clay can also be used to permanently bond the ceramic with the metallic materials.
  • the actual ignition bridge 5 between the contact pins 3 or the conductive layers 4 enclosing them flatly can either be formed by a wire, as can be seen, for example, from FIG. 4, which will be explained in detail later.
  • the application of the ignition bridge 5 also has special advantages in screen printing technology; resistance ranges from 1 to 100 ohms can be achieved in this way.
  • the ignition bridge it is also possible to apply the ignition bridge as a thin film in an atomization process known per se or by vapor deposition in a vacuum.
  • the wire-shaped ignition bridges are either soldered or welded on.
  • Precious metal materials as already mentioned above, have also proven particularly useful as materials for these ignition bridges.
  • These resistance bridges which are specially applied using screen printing technology, have an already sharply defined resistance range after heat treatment, but, if desired, it is possible to achieve resistance values of even smaller fluctuation ranges by post-processing in the laser trimming method known to the person skilled in the art.
  • the method for producing the electrical ignition bridge carrier according to the invention is essentially characterized in that one or more holes having a ceramic body is fitted into a metallic, geometrically shaped outer ring and is tightly connected to the metallic outer ring, whereupon the metallic contact pins into the holes in the ceramic body are fitted and also tightly connected to the ceramic body and then either wire-shaped ignition bridges between the contact pins are produced by soldering or welding, or preferably ignition bridges are produced by sputtering or vapor deposition in a vacuum or screen printing process.
  • an electrically conductive layer is preferably first applied around the contact pins, via which the connection between contact pins and ignition bridge is established.
  • the ignition bridge carrier with the ceramic elements according to the invention is distinguished from the previously known embodiments in that, owing to the higher compressive strength of the ceramic materials, a far higher mechanical load-bearing capacity can be achieved than was possible with a glass bushing.
  • the ceramic materials have a higher thermal conductivity than normal glasses, which is extremely favorable, for example proves in the production of 1A / 1W ignition elements that is possible for the first time.
  • the ceramic bushings enable the production of welded ceramic-based ignition elements which, in addition to their mechanical strength, have the further advantage that they are completely sealed.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuses (AREA)
  • Spark Plugs (AREA)
  • Resistance Heating (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

The carrier for an electric bridge igniter for igniting priming charges, delay compositions and pyrotechnical mixtures and for igniting primary explosives and charges consists of a ceramic body 2, which is introduced into a metallic outer ring 1 and has one or more boreholes, into which solid or tubular contact pins 3 as current leads are fitted firmly and tightly and are surrounded flatly by a conducting layer 4, between which conducting layers the bridge igniter 5 is situated. <IMAGE>

Description

Die Erfindung betrifft den oben bezeichneten Gegenstand.The invention relates to the object described above.

Aus der DE-PS 20 20 016 ist ein einen Zündsatz ein­schließendes elektrisches Zündmittel bekannt, das aus einem elektrisch leitenden Gehäuse und einem darin iso­liert angeordneten und von außen zugänglichen Polstück besteht, wobei dieses Polstück über eine Zündbrücke mit dem Gehäuse elektrisch leitend verbunden ist. Innerhalb des Gehäuses befindet sich ein aus Glas oder Keramik bestehender Isolierkörper mit Metallschichtkontakten, die mit dem Zündsatz in Berührung stehen und teilweise mit einer Zündbrücke aus Tantal oder Tantalnitrid über­ deckt sind. Einer der Metallschichtkontakte, die aus Nickel, Palladium sowie aus Palladium-Silber-, Palladium-Gold-, Platin-Silber-, Platin-Gold- und Silber-Aluminium-Legierungen bestehen können, steht mit dem Polstück über eine mit leitendem Material ausgeklei­dete Bohrung in dem Isolierkörper in elektrisch leiten­der Verbindung, während der Masseschluß zum Außengehäuse mit einem Stützring gebildet wird, der den die Metall­schichtkontakte enthaltenden Isolierkörper gegen das Polstück preßt. Diese sogenannten einpoligen elektri­schen Zündmittel sind jedoch nur in einem vergleichswei­se aufwendigen Verfahren herzustellen, da die Zündbrücke mit vielen Teilen des Zündmittels kontaktiert werden muß.From DE-PS 20 20 016 an ignition set including an electrical ignition means is known, which consists of an electrically conductive housing and an insulated arranged therein and accessible from the outside pole piece, this pole piece is electrically conductively connected to the housing via an ignition bridge. Inside the housing there is an insulating body made of glass or ceramic with metal layer contacts that are in contact with the primer and partly with a firing bridge made of tantalum or tantalum nitride are covered. One of the metal layer contacts, which can consist of nickel, palladium as well as palladium-silver, palladium-gold, platinum-silver, platinum-gold and silver-aluminum alloys, is located with the pole piece via a bore lined with conductive material in the insulating body in an electrically conductive connection, while the ground connection to the outer housing is formed with a support ring which presses the insulating body containing the metal layer contacts against the pole piece. However, these so-called single-pole electrical ignition devices can only be produced in a comparatively complex process, since the ignition bridge must be contacted with many parts of the ignition device.

Es ist zwar auch schon bekannt, sogenannte zweipolige Glasdurchführungen zu verwenden, bei denen das von den einpoligen elektrischen Zündmitteln bekannte aufwendige Kontaktieren dadurch vermieden wird, daß die beiden stromführenden Zuleitungen, auch "Pins" genannt, iso­liert in Glaskörper eingesetzt sind. Da aber zwischen diesen Pins die die Zündbrücke bildende leitfähige Schicht wiederum in einer sehr aufwendigen Arbeitsweise hergestellt werden muß, indem diese Schicht zunächst mittels Kathodenzerstäubung oder Aufdampfen im Hochva­kuum hergestellt und dann noch nachgearbeitet, bei­spielsweise abgeätzt werden muß, bzw. indem die leitfä­hige Schicht in der ebenfalls arbeitsaufwendigen Masken­technik erzeugt wird, läßt auch dieses bekannte Verfah­ren noch zahlreiche Wünsche bezüglich eines vereinfach­ten Herstellungsverfahrens von Zünd- und Anzündmitteln offen, zumal sich die in konventioneller Weise zwischen den Pins angebrachten Glühdrähte als Zündbrücken nicht bewährt haben, da sie starken mechanischen Beanspruchun­gen meist nur bedingt standhalten.It is also already known to use so-called two-pole glass bushings, in which the complex contact known from the single-pole electrical ignition means is avoided in that the two current-carrying leads, also called "pins", are insulated in the glass body. However, since between these pins the conductive layer forming the ignition bridge must in turn be produced in a very complex manner in that this layer is first produced by means of sputtering or vapor deposition in a high vacuum and then reworked, for example etched off, or by the conductive layer in the Also labor-intensive mask technology is produced, this known method still leaves numerous wishes with regard to a simplified manufacturing process for ignition and ignition means, especially since the filaments which are conventionally attached between the pins do not become ignition bridges have proven themselves, as they usually only withstand limited mechanical loads to a limited extent.

Der Erfindung liegt die Aufgabe zugrunde, einen elek­trischen Zündbrückenträger verfügbar zu machen, der die geschilderten Nachteile der bisher bekannten Konstruk­tionen nicht aufweist und mechanisch hoch belastbar ist. Gleichzeitig soll ein Verfahren zur Herstellung dieses Zündbrückenträgers entwickelt werden, das ver­gleichsweise einfach ohne aufwendige Nachbearbeitung, aber mit großer Sicherheit bezüglich der Verfahrenspro­dukte und ihrer Eigenschaften durchgeführt werden kann.The invention has for its object to make an electrical ignition bridge carrier available, which does not have the disadvantages of the previously known constructions and is mechanically highly resilient. At the same time, a process is to be developed for the production of this ignition bridge carrier, which can be carried out comparatively simply without complex post-processing, but with great certainty with regard to the process products and their properties.

Die Lösung dieser Aufgabe ist ein elektrischer Zünd­brückenträger zur Anzündung von Anzündsätzen, Verzöge­rungssätzen und pyrotechnischen Mischungen sowie zur Zündung von Primärzündstoffen und -sätzen, der dadurch gekennzeichnet ist, daß er aus einem in einen metalli­schen Außenring 1 eingebrachten Keramikkörper 2 mit einer oder mehreren Bohrungen besteht, in die massive oder rohrförmige Kontaktstifte 3 als Stromzuleitungen fest und dicht eingepaßt und von einer leitenden Schicht 4 flächenförmig umgeben sind, zwischen denen sich die Zündbrücke 5 befindet.The solution to this problem is an electrical ignition bridge carrier for the ignition of ignition kits, delay kits and pyrotechnic mixtures as well as for the ignition of primary primers and kits, which is characterized in that it consists of a ceramic body 2 with one or more bores inserted into a metallic outer ring 1, in the solid or tubular contact pins 3 as current supply lines are tightly and tightly fitted and are surrounded by a conductive layer 4, between which the ignition bridge 5 is located.

Als Werkstoff für den metallischen Außenring 1 hat sich Edelstahl besonders bewährt, der auch als Werkstoff für die Kontaktstifte 3 verwendet werden kann. Es ist aber auch möglich, andere metallische Werkstoffe für den metallischen Außenring 1 und/oder die Kontaktstifte 3 zu verwenden, beispielsweise Aluminium, Kupfer, Nickel und deren Legierungen, Titan, Zirkonium, Tantal und andere wärmebeständige und hochschmelzende Metalle und Legierungen, insbesondere auch die unter der Bezeich­nung KOVAR bekannte Kobalt-Nickel-Eisen-Legierung.Stainless steel, which can also be used as a material for the contact pins 3, has proven particularly useful as the material for the metallic outer ring 1. However, it is also possible to use other metallic materials for the metallic outer ring 1 and / or the contact pins 3, for example aluminum, copper, nickel and their alloys, titanium, zirconium, tantalum and other heat-resistant and high-melting metals and alloys, in particular also the cobalt-nickel-iron alloy known under the name KOVAR.

Als Werkstoffe für den Keramikkörper 2 können die ver­schiedensten keramischen Materialien verwendet werden, insbesondere solche auf der Basis von Aluminiumoxid, Siliciumdioxid, Siliciumnitrid, Siliciumcarbid und Zir­koniumdioxid.A wide variety of ceramic materials can be used as materials for the ceramic body 2, in particular those based on aluminum oxide, silicon dioxide, silicon nitride, silicon carbide and zirconium dioxide.

Die dichte und feste Verbindung bzw. Einpassung zwi­schen dem metallischen Außenring 1 und dem keramischen Körper 2 einerseits und zwischen dem keramischen Körper 2 und den Kontaktstiften 3 andererseits kann durch Ver­kleben mittels dem Fachmann auf diesem Gebiet bekannten Klebemitteln, aber auch durch Einkitten, bevorzugt aber durch Einglasen erfolgen. Für die bevorzugte Einglasung können die jedem Fachmann bekannten Werkstoffe, mit denen metallische Werkstoffe und keramische Werkstoffe dicht verbunden werden, zum Einsatz kommen. In diesem Zusammenhang haben sich Alkali- und Erdalkali-Silikat­gläser, Gläser auf der Basis von Borsilikat sowie Oxide der seltenen Erden enthaltende Gläser besonders bewährt. Als Beispiel eines Glases, das für diese einglasende Verbindung zwischen metallischem und keramischem Werk­stoff geeignet ist, kann ein Glas der nachstehenden Zusammensetzung verwendet werden:

Figure imgb0001
The tight and firm connection or fitting between the metallic outer ring 1 and the ceramic body 2 on the one hand and between the ceramic body 2 and the contact pins 3 on the other hand can be done by gluing using adhesives known to the person skilled in the art, but also by cementing, but preferably by Glazed in. The materials known to any person skilled in the art, with which metallic materials and ceramic materials are tightly bonded, can be used for the preferred glazing. In this context, alkali and alkaline earth silicate glasses, glasses based on borosilicate and glasses containing oxides of rare earth have proven particularly useful. As an example of a glass which is suitable for this glazing connection between metallic and ceramic material, a glass of the following composition can be used:
Figure imgb0001

Es ist aber auch möglich, keramische Pasten zu verwen­den, beispielweise die nachstehend in ihrer Zusammen­setzung wiedergegebenen Pasten:

Figure imgb0002
However, it is also possible to use ceramic pastes, for example the pastes shown below in their composition:
Figure imgb0002

Auch Silicium bzw. Siliciumlegierungen in Mischung mit Quarzpulver, Glaspulver und Ton können dazu dienen, die keramischen mit den metallischen Werkstoffen bleibend dicht zu verbinden.Silicon or silicon alloys mixed with quartz powder, glass powder and clay can also be used to permanently bond the ceramic with the metallic materials.

Die flächenförmig um die Kontaktstifte 3 aufgebrachte leitende Schicht 4 ist im allgemeinen eine in üblicher Weise aufgebrachte Dünn- oder Dickfilmschicht, die bei­spielsweise im Siebdruckverfahren oder galvanisch herge­stellt worden ist. Als Werkstoffe haben sich für diese leitende Schicht 4 insbesondere die Edelmetalle und Edelmetall-Legierungen der VIII. Gruppe des Perioden­systems bewährt, vorzugsweise Platin oder Palladium und deren Legierungen auch mit Silber und/oder Gold.The conductive layer 4 applied in the form of a surface around the contact pins 3 is generally a thin or thick film layer applied in a customary manner, which has been produced, for example, by screen printing or galvanically. The noble metals and noble metal alloys of group VIII of the periodic table, in particular platinum or palladium and their alloys also with silver and / or gold, have proven themselves as materials for this conductive layer 4.

Die eigentliche Zündbrücke 5 zwischen den Kontaktstif­ten 3 bzw. den diese flächenförmig einschließenden lei­tenden Schichten 4 kann entweder von einem Draht gebil­det sein, wie dies beispielsweise aus Fig. 4 zu erken­nen ist, die später noch im einzelnen erläutert wird. Es hat sich aber gezeigt, daß das Aufbringen der Zünd­brücke 5 ebenfalls in Siebdrucktechnik besondere Vor­teile bringt; denn auf diese Weise können Widerstands­bereiche von 1 bis 100 Ohm erreicht werden. Es ist al­lerdings auch möglich, die Zündbrücke als Dünnfilm in einem an sich bekannten Zerstäubungsverfahren oder durch Aufdampfen im Vakuum aufzubringen. Die drahtför­migen Zündbrücken werden entweder aufgelötet oder auf­geschweißt.The actual ignition bridge 5 between the contact pins 3 or the conductive layers 4 enclosing them flatly can either be formed by a wire, as can be seen, for example, from FIG. 4, which will be explained in detail later. However, it has been shown that the application of the ignition bridge 5 also has special advantages in screen printing technology; resistance ranges from 1 to 100 ohms can be achieved in this way. However, it is also possible to apply the ignition bridge as a thin film in an atomization process known per se or by vapor deposition in a vacuum. The wire-shaped ignition bridges are either soldered or welded on.

Als Werkstoffe für diese Zündbrücken haben sich eben­falls Edelmetallwerkstoffe, wie sie oben bereits er­wähnt wurden, besonders bewährt. Diese speziell in Siebdrucktechnik aufgebrachten Widerstandsbrücken wei­sen nach einer Wärmebehandlung einen bereits scharf eingegrenzten Widerstandsbereich auf, doch ist es, falls erwünscht, möglich, durch eine Nachbearbeitung im dem Fachmann bekannten Laser-Trimm-Verfahren Wider­standswerte noch geringerer Schwankungsbreite zu er­zielen.Precious metal materials, as already mentioned above, have also proven particularly useful as materials for these ignition bridges. These resistance bridges, which are specially applied using screen printing technology, have an already sharply defined resistance range after heat treatment, but, if desired, it is possible to achieve resistance values of even smaller fluctuation ranges by post-processing in the laser trimming method known to the person skilled in the art.

Besonders vorteilhaft ist es bei Anwendung der Sieb­drucktechnik zur Herstellung der Zündbrücke, daß der Keramikkörper keiner besonderen Vorbehandlung bedarf, sondern unmittelbar mit der in der Produktion auftre­tenden Rauhtiefe von beispielsweise N 5 eingesetzt werden kann. Darüber hinaus handelt es sich bei der Siebdrucktechnik um ein leicht anwendbares Verfahren, das außerdem Zündbrücken liefert, die in ihrer mechani­schen Belastbarkeit sich weitaus günstiger verhalten als drahtförmige Zündbrücken.It is particularly advantageous when using screen printing technology to produce the ignition bridge that the ceramic body does not require any special pretreatment, but rather can be used directly with the roughness depth of N 5, for example, which occurs in production. In addition, screen printing technology is an easy-to-use process which also provides ignition bridges that behave far more favorably than wire-shaped ignition bridges in terms of their mechanical strength.

Die Erfindung wird nachstehend anhand der Zeichnungen näher erläutert.

  • Fig. 1 zeigt im Schnitt den metallischen Außenring 1 mit dem eingepaßten Keramikkörper 2 in Form einer Keramikronde mit hier beispielsweise zwei Kontaktstif­ten 3. Der Keramikkörper 2 ist mit dem metallischen Außenring 1 einerseits und den Kontaktstiften 3 anderer­seits dicht verbunden, und zwar entweder im Hartlötver­fahren, mit einem keramischen Zement oder auch einem organischen Kleber bzw. durch Einglasungstechnik unter Einsatz der oben beispielsweise in ihrer Zusammensetzung angegebenen Gläser bzw. Pasten.
  • Fig. 2 zeigt vereinfacht eine Draufsicht auf den Zünd­brückenträger der Fig. 1, wobei zur besseren Übersicht­lichkeit lediglich die Kontaktstifte 3 mit den sie flä­chenförmig umgebenden leitenden Schichten 4 und die Zündbrücke 5, die hier ebenso wie die leitenden Schich­ten 4 im Siebdruckverfahren aufgebracht worden ist, dargestellt sind.
  • Die Figuren 3 und 4 zeigen eine Variante des in den Figuren 1 und 2 dargestellten Zündbrückenträgers gemäß der Erfindung, bei der die Zündbrücke durch einen Draht 5a gebildet ist, der die leitende Verbindung zwischen den Kontaktstiften 3 herstellt.
The invention is explained in more detail below with reference to the drawings.
  • 1 shows in section the metallic outer ring 1 with the fitted ceramic body 2 in the form of a ceramic blank with here, for example, two contact pins 3. The ceramic body 2 is tightly connected to the metallic outer ring 1 on the one hand and the contact pins 3 on the other hand, either in the brazing process, with a ceramic cement or an organic adhesive or by glazing technique using the glasses or pastes specified above, for example, in their composition.
  • FIG. 2 shows a simplified top view of the ignition bridge carrier of FIG. 1, with only the contact pins 3 with the conductive layers 4 surrounding them in the form of a surface and the ignition bridge 5, which here, like the conductive layers 4, have been applied using the screen printing process, for better clarity, are shown.
  • FIGS. 3 and 4 show a variant of the ignition bridge carrier shown in FIGS. 1 and 2 according to the invention, in which the ignition bridge is formed by a wire 5a which establishes the conductive connection between the contact pins 3.

Es ist selbstverständlich möglich, auch eine größere Anzahl von Kontaktstiften in dem Keramikkörper zu ver­wenden, wobei dann natürlich auch die entsprechende größere Anzahl von Zündbrücken aufgebracht werden muß.It is of course possible to use a larger number of contact pins in the ceramic body, in which case the corresponding larger number of ignition bridges must of course also be applied.

Das Verfahren zur Herstellung des elektrischen Zünd­brückenträgers gemäß der Erfindung ist im wesentlichen dadurch gekennzeichnet, daß in einen metallischen, geometrisch geformten Außenring ein ein oder mehrere Bohrungen aufweisender Keramikkörper eingepaßt und dicht mit dem metallischen Außenring verbunden wird, worauf die metallischen Kontaktstifte in die Bohrungen des Keramikkörpers eingepaßt und ebenfalls dicht mit dem Keramikkörper verbunden werden und anschließend entweder drahtförmige Zündbrücken zwischen den Kontaktstiften durch Löten oder Schweißen hergestellt oder bevorzugt Zündbrücken durch Zerstäubungs- oder Aufdampftechnik im Vakuum oder im Siebdruckverfahren erzeugt werden. Vor­zugsweise wird bei diesem letztgenannten Verfahren zu­nächst flächenförmig um die Kontaktstifte eine elek­trisch leitende Schicht aufgebracht, über die die Ver­bindung zwischen Kontaktstiften und Zündbrücke herge­stellt wird.The method for producing the electrical ignition bridge carrier according to the invention is essentially characterized in that one or more holes having a ceramic body is fitted into a metallic, geometrically shaped outer ring and is tightly connected to the metallic outer ring, whereupon the metallic contact pins into the holes in the ceramic body are fitted and also tightly connected to the ceramic body and then either wire-shaped ignition bridges between the contact pins are produced by soldering or welding, or preferably ignition bridges are produced by sputtering or vapor deposition in a vacuum or screen printing process. In this last-mentioned method, an electrically conductive layer is preferably first applied around the contact pins, via which the connection between contact pins and ignition bridge is established.

Der Zündbrückenträger mit den Keramikelementen gemäß der Erfindung zeichnet sich gegenüber den bisher be­kannten Ausführungsformen dadurch aus, daß infolge der höheren Druckfestigkeit der keramischen Materialien eine weitaus höhere mechanische Belastbarkeit erzielt werden kann als dies bei Glasdurchführung möglich gewe­sen ist. Außerdem besitzen die keramischen Werkstoffe gegenüber normalen Gläsern eine höhere Wärmeleitfähig­keit, die sich beispielsweise außerordentlich günstig erweist bei der damit erstmals möglichen Herstellung von 1A/1W-Zündelementen. Hinzukommt, daß die kerami­schen Durchführungen die Herstellung von geschweißten Zündelementen auf Keramikbasis ermöglichen, die neben ihrer mechanischen Belastbarkeit den weiteren Vorteil haben, daß sie völlig dicht sind.The ignition bridge carrier with the ceramic elements according to the invention is distinguished from the previously known embodiments in that, owing to the higher compressive strength of the ceramic materials, a far higher mechanical load-bearing capacity can be achieved than was possible with a glass bushing. In addition, the ceramic materials have a higher thermal conductivity than normal glasses, which is extremely favorable, for example proves in the production of 1A / 1W ignition elements that is possible for the first time. In addition, the ceramic bushings enable the production of welded ceramic-based ignition elements which, in addition to their mechanical strength, have the further advantage that they are completely sealed.

Claims (10)

1. Elektrischer Zündbrückenträger zur Anzündung von Anzündsätzen, Verzögerungssätzen und pyrotechni­schen Mischungen sowie zur Zündung von Primärzünd­stoffen und -sätzen, dadurch gekennzeichnet, daß er aus einem in einen metallischen Außenring (1) eingebrachten Keramikkörper (2) mit einer oder mehreren Bohrungen besteht, in die massive oder rohrförmige Kontaktstifte (3) als Stromzuleitungen fest und dicht eingepaßt und von einer leitenden Schicht (4) flächenförmig umgeben sind, zwischen denen sich die Zündbrücke (5) befindet.1. Electrical ignition bridge carrier for the ignition of ignition sets, delay sets and pyrotechnic mixtures and for the ignition of primary primers and sets, characterized in that it consists of a ceramic body (2) introduced into a metallic outer ring (1) with one or more bores into which massive or tubular contact pins (3) are tightly and tightly fitted as power supply lines and are surrounded by a conductive layer (4), between which the ignition bridge (5) is located. 2. Elektrischer Zündbrückenträger nach Anspruch 1, dadurch gekennzeichnet, daß der metallische Außen­ring (1) und/oder die Kontaktstifte (3) aus Edel­stahl oder einem anderen wärmebeständigen und hochschmelzenden metallischen Werkstoff bestehen.2. Electrical ignition bridge support according to claim 1, characterized in that the metallic outer ring (1) and / or the contact pins (3) consist of stainless steel or another heat-resistant and high-melting metallic material. 3. Elektrischer Zündbrückenträger nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der Keramikkörper (2) aus oxidkeramischen Werkstoffen besteht.3. Electrical ignition bridge support according to claim 1 and 2, characterized in that the ceramic body (2) consists of oxide-ceramic materials. 4. Elektrischer Zündbrückenträger nach Anspruch 3, dadurch gekennzeichnet, daß der Keramikkörper (2) aus keramischen Werkstoffen auf der Basis der Oxide von Aluminium, Silicium und/oder Zirkonium besteht.4. Electrical ignition bridge support according to claim 3, characterized in that the ceramic body (2) consists of ceramic materials based on the oxides of aluminum, silicon and / or zirconium. 5. Elektrischer Zündbrückenträger nach irgendeinem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der metallische Außenring (1) mit dem Keramikkörper (2) und dieser mit den Kontaktstiften (3) durch Einlöten, Einkleben, Einkitten und/oder Einglasen dicht verbunden sind.5. Electrical ignition bridge support according to any one of claims 1 to 4, characterized in that the metallic outer ring (1) with the ceramic body (2) and this with the contact pins (3) are tightly connected by soldering, gluing, cementing and / or glazing. 6. Elektrischer Zündbrückenträger nach irgendeinem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die die Kontaktstifte (3) flächenförmig umgebende Schicht (4) eine Dünn- oder Dickfilmschicht, vor­zugsweise aus Edelmetallen oder Edelmetall-Legie­rungen der VIII. Gruppe des Periodensystems, ist.6. Electrical ignition bridge support according to any one of claims 1 to 5, characterized in that the contact pins (3) sheet-like surrounding layer (4) is a thin or thick film layer, preferably made of noble metals or noble metal alloys of group VIII of the periodic table. 7. Elektrischer Zündbrückenträger nach Anspruch 6, dadurch gekennzeichnet, daß die Dünn- oder Dick­filmschicht im Siebdruckverfahren oder galvanisch gebildet worden ist.7. Electrical ignition bridge carrier according to claim 6, characterized in that the thin or thick film layer has been formed by screen printing or galvanically. 8. Elektrischer Zündbrückenträger nach irgendeinem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Zündbrücke (5) aus einem Draht oder ebenfalls aus einer im Siebdruckverfahren, durch Kathodenzer­stäubung oder durch Aufdampfen im Vakuum gebildeten Dünn- oder Dickfilmschicht besteht.8. Electrical ignition bridge support according to any one of claims 1 to 7, characterized in that the ignition bridge (5) consists of a wire or also of a thin or thick film layer formed by screen printing, by sputtering or by vacuum evaporation. 9. Verfahren zur Herstellung des elektrischen Zünd­brückenträgers nach Anspruch 1 bis 8, dadurch ge­kennzeichnet, daß in einen metallischen, geome­trisch geformten Außenring ein ein oder mehrere Bohrungen aufweisender Keramikkörper eingepaßt und dicht mit dem metallischen Außenring verbunden wird, worauf die metallischen Kontaktstifte in die Bohrungen des Keramikkörpers eingepaßt und eben­falls dicht mit dem Keramikkörper verbunden werden und anschließend entweder drahtförmige Zündbrücken zwischen den Kontaktstiften durch Löten oder Schweißen hergestellt oder bevorzugt Zündbrücken durch Zerstäubungs- oder Aufdampftechnik im Vakuum oder im Siebdruckverfahren erzeugt werden.9. A method for producing the electrical ignition bridge carrier according to claim 1 to 8, characterized in that one or more holes having a ceramic body is fitted into a metallic, geometrically shaped outer ring and tightly connected to the metallic outer ring, whereupon the metallic contact pins in the holes of the Ceramic body fit and also be tightly connected to the ceramic body and then either wire-shaped ignition bridges between the contact pins by soldering or welding or preferably ignition bridges by sputtering or vapor deposition technology in a vacuum or screen printing process. 10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß zunächst flächenförmig um die Kontaktstifte eine elektrisch leitende Schicht aufgebracht und über diese dann die Verbindung zwischen Kontakt­stiften und Zündbrücke hergestellt wird.10. The method according to claim 9, characterized in that first an area around the contact pins an electrically conductive layer is applied and then the connection between the contact pins and the ignition bridge is made.
EP87102055A 1986-02-27 1987-02-13 Electrical ignition and method for its production Expired - Lifetime EP0248977B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87102055T ATE71217T1 (en) 1986-02-27 1987-02-13 ELECTRIC LIGHTING ELEMENT AND METHOD FOR ITS MANUFACTURE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863606364 DE3606364A1 (en) 1986-02-27 1986-02-27 ELECTRIC IGNITION BRIDGE FOR THE APPLICATION OF APPLICATION SETS, DELAY SETS AND PYROTECHNICAL MIXTURES, AND FOR THE PRIMING OF PRIMARY IGNITION SUBSTANCES AND SETS AND METHOD FOR THE PRODUCTION THEREOF
DE3606364 1986-02-27

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EP0248977A1 true EP0248977A1 (en) 1987-12-16
EP0248977B1 EP0248977B1 (en) 1992-01-02

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EP87102055A Expired - Lifetime EP0248977B1 (en) 1986-02-27 1987-02-13 Electrical ignition and method for its production

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EP (1) EP0248977B1 (en)
AT (1) ATE71217T1 (en)
DE (2) DE3606364A1 (en)
ES (1) ES2028803T3 (en)
GR (1) GR3003495T3 (en)

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EP0586133A2 (en) * 1992-08-27 1994-03-09 Oea, Inc. All-glass initiator assembly used in an inflator system
WO1998013836A1 (en) * 1996-09-28 1998-04-02 Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik Method for balancing layer resistors using an excimer laser radiation
WO1999018586A1 (en) * 1997-10-03 1999-04-15 Schaffler & Co. Gesellschaft Mbh Heating element and method for producing the same
EP0932015A1 (en) 1998-01-23 1999-07-28 Diehl Stiftung &amp; Co. Detonator
US6274252B1 (en) 1994-08-04 2001-08-14 Coors Ceramics Company Hermetic glass-to-metal seal useful in headers for airbags
EP1455160A1 (en) * 2003-03-03 2004-09-08 Schott Glas Metal-fixing-material-passage and method of manufacturing a header with a metal-fixing-material-passage
EP1808667A3 (en) * 2003-03-03 2007-08-01 Schott AG Metal fusing material and method for manufacturing a carrier for a duct with metal fusing material
DE102006004036A1 (en) * 2006-01-27 2007-08-09 Schott Ag Metal fixing material implementation and use of such a passage and airbag and belt tensioner with an ignition device
US8205554B2 (en) 2006-11-28 2012-06-26 Schott Ag Firing apparatus for a pyrotechnic protection apparatus
US8276514B2 (en) 2003-03-03 2012-10-02 Schott Ag Metal fixing material bushing and method for producing a base plate of a metal fixing material bushing
US8733250B2 (en) 2006-01-27 2014-05-27 Schott Ag Metal-sealing material-feedthrough and utilization of the metal-sealing material feedthrough with an airbag, a belt tensioning device, and an ignition device
US9423218B2 (en) 2010-09-17 2016-08-23 Schott Ag Method for producing a ring-shaped or plate-like element
WO2020016153A1 (en) * 2018-07-20 2020-01-23 Schott Ag Metal fixing material leadthrough having low susceptibility to faults
US10684102B2 (en) 2010-09-17 2020-06-16 Schott Ag Method for producing a ring-shaped or plate-like element
CN113513953A (en) * 2021-03-25 2021-10-19 四川仲玛智造科技有限公司 Production line for producing electric ignition head support

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JPH0792358B2 (en) 1987-09-14 1995-10-09 日本工機株式会社 Igniter for electric ignition device
DE4307774A1 (en) * 1993-03-12 1994-09-15 Dynamit Nobel Ag Ignition device
SE517704C2 (en) 1999-05-10 2002-07-09 Tzn Forschung & Entwicklung Cartridge with electrothermal ignition device
DE19936650C2 (en) * 1999-05-10 2002-10-24 Rheinmetall W & M Gmbh cartridge

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0586133A3 (en) * 1992-08-27 1994-05-18 Oea, Inc. All-glass initiator assembly used in an inflator system
US5404263A (en) * 1992-08-27 1995-04-04 Oea, Inc. All-glass header assembly used in an inflator system
EP0586133A2 (en) * 1992-08-27 1994-03-09 Oea, Inc. All-glass initiator assembly used in an inflator system
US6274252B1 (en) 1994-08-04 2001-08-14 Coors Ceramics Company Hermetic glass-to-metal seal useful in headers for airbags
WO1998013836A1 (en) * 1996-09-28 1998-04-02 Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik Method for balancing layer resistors using an excimer laser radiation
KR100525939B1 (en) * 1997-10-03 2005-11-08 샤플러 운트 코. 게젤샤프트 엠베하 Heating element and method for producing the same
WO1999018586A1 (en) * 1997-10-03 1999-04-15 Schaffler & Co. Gesellschaft Mbh Heating element and method for producing the same
US6316752B1 (en) 1997-10-03 2001-11-13 Schaffler & Co., Gesellschaft Mbh Heating element with screen-printed Au-Pd resinate layer and Ag-Pd contact areas with solder resistant dams
EP0932015A1 (en) 1998-01-23 1999-07-28 Diehl Stiftung &amp; Co. Detonator
JP2010133698A (en) * 2003-03-03 2010-06-17 Schott Ag Metal fixing material bush, and method of manufacturing core of metal fixing material bush
EP1808667A3 (en) * 2003-03-03 2007-08-01 Schott AG Metal fusing material and method for manufacturing a carrier for a duct with metal fusing material
EP1455160A1 (en) * 2003-03-03 2004-09-08 Schott Glas Metal-fixing-material-passage and method of manufacturing a header with a metal-fixing-material-passage
US8276514B2 (en) 2003-03-03 2012-10-02 Schott Ag Metal fixing material bushing and method for producing a base plate of a metal fixing material bushing
US8327765B2 (en) 2003-03-03 2012-12-11 Schott Ag Metal fixing material bushing and method for producing a base plate of a metal fixing material bushing
DE102006004036A1 (en) * 2006-01-27 2007-08-09 Schott Ag Metal fixing material implementation and use of such a passage and airbag and belt tensioner with an ignition device
US8127681B2 (en) 2006-01-27 2012-03-06 Schott Ag Metal-sealing material-feedthrough and utilization of the metal-sealing material feedthrough with an airbag, a belt tensioning device, and an ignition device
US8733250B2 (en) 2006-01-27 2014-05-27 Schott Ag Metal-sealing material-feedthrough and utilization of the metal-sealing material feedthrough with an airbag, a belt tensioning device, and an ignition device
US8205554B2 (en) 2006-11-28 2012-06-26 Schott Ag Firing apparatus for a pyrotechnic protection apparatus
US9423218B2 (en) 2010-09-17 2016-08-23 Schott Ag Method for producing a ring-shaped or plate-like element
US9651345B2 (en) 2010-09-17 2017-05-16 Schott Ag Method for producing a ring-shaped or plate-like element
US10684102B2 (en) 2010-09-17 2020-06-16 Schott Ag Method for producing a ring-shaped or plate-like element
WO2020016153A1 (en) * 2018-07-20 2020-01-23 Schott Ag Metal fixing material leadthrough having low susceptibility to faults
CN112469956A (en) * 2018-07-20 2021-03-09 肖特股份有限公司 Metal mounting material feedthrough having low susceptibility to error
EP3851786A1 (en) * 2018-07-20 2021-07-21 Schott AG Metal fixation material feedthrough with low susceptibility to failure
JP2021529924A (en) * 2018-07-20 2021-11-04 ショット アクチエンゲゼルシャフトＳｃｈｏｔｔ ＡＧ Error-prone metal fixing material feedthrough
CN113513953A (en) * 2021-03-25 2021-10-19 四川仲玛智造科技有限公司 Production line for producing electric ignition head support

Also Published As

Publication number Publication date
ES2028803T3 (en) 1992-07-16
DE3606364A1 (en) 1987-09-03
EP0248977B1 (en) 1992-01-02
DE3775623D1 (en) 1992-02-13
ATE71217T1 (en) 1992-01-15
GR3003495T3 (en) 1993-02-17

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