EP3121552B1 - Ignition device - Google Patents

Ignition device Download PDF

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Publication number
EP3121552B1
EP3121552B1 EP16001468.4A EP16001468A EP3121552B1 EP 3121552 B1 EP3121552 B1 EP 3121552B1 EP 16001468 A EP16001468 A EP 16001468A EP 3121552 B1 EP3121552 B1 EP 3121552B1
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EP
European Patent Office
Prior art keywords
ignition
metal layer
thin
bridge
consumer
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EP16001468.4A
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German (de)
French (fr)
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EP3121552A1 (en
Inventor
Gerhard ZÖRKLER
Johann Florian
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TDW Gesellschaft fuer Verteidigungstechnische Wirksysteme mbH
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TDW Gesellschaft fuer Verteidigungstechnische Wirksysteme mbH
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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
    • F42B3/121—Initiators with incorporated integrated circuit
    • 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
    • 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
    • F42B3/14—Spark initiators

Definitions

  • the invention relates to an ignition device for an explosive charge of an active body comprising at least one ignition circuit and a device for forwarding the successful initiation.
  • Such igniters which typically include at least one ignition circuit with an energy store (capacitor) and a switch that uses the stored energy by closing the device trigger switch.
  • energy store capacitor
  • an EFI ignition module has become known that works on this principle, in the end a plastic compact is ignited.
  • a firing bridge is provided, which evaporates abruptly by supplying electrical energy from a capacitor and in the process dislodges a small part from the film arranged above it with the aid of the barrel above it. This part has sufficient shock wave energy to trigger the plastic compact.
  • the WO 89/10529 A1 describes an inverted impact detonator that is designed to be excited by a pulse of electrical current coming from an external source with a conductor arranged along the top, side and bottom of a sheet metal insulator.
  • the US 4,471,697 A describes a bidirectional slapper igniter that uses a single bridge circuit to detonate a pair of opposing initiation pellets, wherein a line generator uses a plurality of bridges in electrical series to produce opposite cylindrical wavefronts.
  • the WO 2011/160099 A1 describes an ignition system having a first subsystem functioning as a non-explosive based detonator containing no explosives and a second subsystem as an initiating subsystem containing an initiating pellet.
  • the DE 10 2014 010179 B3 describes an EFI ignition device with an ignition transformer, which can be triggered after initiation of a firing bridge on a flying plate, the ignition board is protected with the ignition bridge against high shock loads.
  • the EP 1 172 628 A2 describes a Slapperzünder, which consists of a base with two pins, a first dielectric sheet, which is pierced with two holes on the back of a fuse is formed, a second dielectric sheet, on the front side metallized pellets are formed with respect to the holes, a run and a body containing a pyrotechnic charge.
  • the ignition device is designed as a compact component and comprises two thin, separated by an electrically insulating plastic layer, strip-shaped metal layers.
  • the ignition device comprises a first ignition circuit having an ignition bridge and a first energy storage device connected in series on both sides of a switch, a second ignition circuit having a second energy storage device and a load connected in series between a first end of the first thin metal layer and a first End of the second thin metal layer is connected and formed in the second metal layer first barrel, which is arranged directly opposite the ignition bridge.
  • the ignition bridge is configured to vaporize when the switch is closed and the second ignition circuit is configured so that the evaporation of the ignition bridge causes a current flow from the second energy storage device to trigger the consumer.
  • FIGS. 1a, 1b and 1c a first embodiment is shown. Based on FIG. 1a , In which the idle state of the ignition device is shown, the components of the ignition device are first explained.
  • the upper half of the FIG. 1 shows the individual, separated parts in the plan view and also simplifies their external wiring.
  • the lower half represents a section along the imaginary center line of the parts from the upper half and illustrates that the parts together result in a compact component.
  • the ignition device comprises a first thin metal layer M1 and a further thin metal layer M2 between which a thin electrically insulating plastic layer K is arranged.
  • the first metal layer also has an ignition bridge ZB of known design. Exactly above this ignition bridge a barrel B is arranged in the further metal layer M2. This is understood to mean a sharp-edged, continuous opening. Both metal strips are strip-shaped and thus form long sides and narrow sides. Thus, the ignition bridge ZB of the embodiment divides the long sides approximately in the middle.
  • the terminals for the elements of the so-called trigger circuit which essentially consists of a series connection of the switch S and of a capacitor C1 are provided on the narrow sides of the first metal layer M1.
  • the switch S In the resting phase, the switch S is open, so that no current can flow in the trigger circuit.
  • the capacitor is designed for semiconductor switchable operating voltages ( ⁇ 1000 V) and has sufficient capacity to vaporize the fuse bridge.
  • the consumer V is the element to be ignited, for example the ignition circuit of an explosive charge (EFI).
  • the ignition capacitor C2 has a high operating voltage (> 1000 V) and a correspondingly high capacity.
  • FIG. 1b shows the time at which the switch S is closed and the capacitor C1 can discharge. This flows corresponding current and the ignition ZB evaporates.
  • the ignition circuit is closed by means of this high voltage switch via the two metal layers M1 and M2 and the capacitor C2 and the consumer V and the consumer V is initiated.
  • FIGS. 2a, 2b . 2c and 2d Another embodiment of the invention, but operates on the same principle is in individual phases in the FIGS. 2a, 2b . 2c and 2d shown.
  • the figures are in turn divided into a top half arranged representation of the individual components in the plan view and a section shown in the lower half along the imaginary center line of the components shown above.
  • the upper half also indicates the external wiring with capacitors.
  • This embodiment of the ignition device likewise comprises a first thin metal layer M12, which in turn has an ignition bridge ZB, and a further thin metal layer M22, which is separated from the first metal layer by a thin insulating plastic film K.
  • a series circuit (trigger circuit) from the switch S and the capacitor C1 is connected to the two ends of the ignition bridge ZB.
  • the EFI also stamped a plastic flyer KF out of the plastic film K.
  • the further metal foil M22 likewise has a component with the function B2 of a barrel, which is arranged exactly above the EFI.
  • the plastic flyer KF is dimensioned in terms of its dynamics so that it can initiate the booster (secondary explosives, for example HNS) with its impulse.
  • the described embodiment is shown by way of example and simplified. In one implementation, it is envisaged to develop a design which, in addition to the EFI and the booster designed as an explosive compact, also the switch and the capacitor of the ignition circuit are integral components of the ignition device according to the invention.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Air Bags (AREA)

Description

Die Erfindung betrifft eine Zündvorrichtung für eine Sprengladung eines Wirkkörpers umfassend wenigstens einen Zündkreis und eine Einrichtung zur Weiterleitung der erfolgten Initiierung.The invention relates to an ignition device for an explosive charge of an active body comprising at least one ignition circuit and a device for forwarding the successful initiation.

Derartige Zündvorrichtungen, die in der Regel wenigstens einen Zündschaltkreis mit einem Energiespeicher (Kondensator) und einen Schalter aufweisen, mit dem die gespeicherte Energie durch Schließen des Schalters zur Auslösung eines Bauteils verwendet wird.Such igniters, which typically include at least one ignition circuit with an energy store (capacitor) and a switch that uses the stored energy by closing the device trigger switch.

Aus der DE 10 2011 108 000 A1 ist ein EFI-Zündmodul bekannt geworden, das nach diesem Prinzip funktioniert, wobei letztlich ein Kunststoffpressling gezündet wird. Im Zündmodul ist eine Zündbrücke vorgesehen, die mittels Zuführung elektrischer Energie aus einem Kondensator schlagartig verdampft und dabei aus der darüber angeordneten Folie mit Hilfe des darüber befindlichen Barrels einen kleinen Teil heraussprengt. Dieser Teil weist genügend Stoßwellenenergie zur Auslösung des Kunststoffpresslings auf.From the DE 10 2011 108 000 A1 is an EFI ignition module has become known that works on this principle, in the end a plastic compact is ignited. In the ignition module, a firing bridge is provided, which evaporates abruptly by supplying electrical energy from a capacitor and in the process dislodges a small part from the film arranged above it with the aid of the barrel above it. This part has sufficient shock wave energy to trigger the plastic compact.

Die WO 89/10529 A1 beschreibt einen invertierten Aufprallzünder, der so ausgelegt ist, dass er durch einen Impuls von elektrischem Strom, der von einer externen Quelle kommt, angeregt wird, wobei ein Leiter entlang der Ober-, Seiten- und Unterseite eines Blechisolators angeordnet ist.The WO 89/10529 A1 describes an inverted impact detonator that is designed to be excited by a pulse of electrical current coming from an external source with a conductor arranged along the top, side and bottom of a sheet metal insulator.

Die US 4 471 697 A beschreibt einen bidirektionalen Slapper-Zünder, welcher eine einzige Brückenschaltung zur Detonation eines Paares gegensätzlicher Initiationspellets verwendet, wobei ein Liniengenerator eine Vielzahl von Brücken in elektrischen Reihen verwendet, um entgegengesetzte zylindrische Wellenfronten zu erzeugen.The US 4,471,697 A describes a bidirectional slapper igniter that uses a single bridge circuit to detonate a pair of opposing initiation pellets, wherein a line generator uses a plurality of bridges in electrical series to produce opposite cylindrical wavefronts.

Die WO 2011/160099 A1 beschreibt ein Zündsystem mit einem ersten Teilsystem, welches fungiert als nicht sprengstoffbasierter Zünder fungiert, der keine Sprengstoffe enthält, und einem zweiten Teilsystem als ein initiierendes Teilsystem, das ein initiierendes Pellet enthält.The WO 2011/160099 A1 describes an ignition system having a first subsystem functioning as a non-explosive based detonator containing no explosives and a second subsystem as an initiating subsystem containing an initiating pellet.

Die DE 10 2014 010179 B3 beschreibt eine EFI-Zündvorrichtung mit einem Zündübertrager, der nach Initiierung einer Zündbrücke über eine fliegende Platte ausgelöst werden kann, wobei die Zündplatine mit der Zündbrücke gegen Hochschockbelastungen geschützt ist.The DE 10 2014 010179 B3 describes an EFI ignition device with an ignition transformer, which can be triggered after initiation of a firing bridge on a flying plate, the ignition board is protected with the ignition bridge against high shock loads.

Die EP 1 172 628 A2 beschreibt einen Slapperzünder, welcher aus einem Sockel mit zwei Anschlussstiften, einem ersten dielektrischen Blech, das mit zwei Löchern durchbohrt ist, auf deren Rückseite eine Sicherung gebildet ist, einem zweiten dielektrischen Blech, auf dessen Vorderseite metallisierte Pellets gegenüber den Löchern gebildet sind, einem Lauf und einem Körper, der eine pyrotechnische Ladung enthält, besteht.The EP 1 172 628 A2 describes a Slapperzünder, which consists of a base with two pins, a first dielectric sheet, which is pierced with two holes on the back of a fuse is formed, a second dielectric sheet, on the front side metallized pellets are formed with respect to the holes, a run and a body containing a pyrotechnic charge.

Nachdem diese Druckschrift keine weiteren Hinweise auf Möglichkeiten zu weiteren Verkleinerung eines Zündmoduls zu entnehmen sind ergibt sich hieraus die Aufgabe, eine Bauweise zu finden, welche eine weitere Verringerung des Bauvolumens ermöglicht ohne dass eine Einschränkung der benötigten Entladeströme (>1000 A) und Spannungen (>1 kV) stattfindet.After this document no further references to possibilities for further reduction of an ignition module can be seen, this results in the task of finding a construction which allows a further reduction of the volume without a limitation of the required discharge currents (> 1000 A) and voltages (> 1 kV) takes place.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Zündvorrichtung als kompaktes Bauelement ausgeführt ist und zwei dünne, durch eine elektrisch isolierende Kunststoffschicht voneinander getrennte, streifenförmige Metallschichten umfasst. Die Zündvorrichtung umfasst eine erste Zündschaltung mit einer Zündbrücke und einer ersten Energiespeichervorrichtung, die auf beiden Seiten eines Schalters in Reihe geschaltet sind, eine zweite Zündschaltung mit einer zweiten Energiespeichervorrichtung und einem Verbraucher, der in Reihe zwischen einem ersten Ende der ersten dünnen Metallschicht und einem ersten Ende der zweiten dünnen Metallschicht verbunden ist und ein in der zweiten Metallschicht ausgebildetes erstes Barrel, das direkt gegenüber der Zündbrücke angeordnet ist. Die Zündbrücke ist ausgebildet, zu verdampfen, wenn der Schalter geschlossen ist und die zweite Zündschaltung ist so ausgebildet, dass die Verdampfung der Zündbrücke einen Stromfluss aus der zweiten Energiespeichervorrichtung bewirkt um den Verbraucher auszulösen.This object is achieved in that the ignition device is designed as a compact component and comprises two thin, separated by an electrically insulating plastic layer, strip-shaped metal layers. The ignition device comprises a first ignition circuit having an ignition bridge and a first energy storage device connected in series on both sides of a switch, a second ignition circuit having a second energy storage device and a load connected in series between a first end of the first thin metal layer and a first End of the second thin metal layer is connected and formed in the second metal layer first barrel, which is arranged directly opposite the ignition bridge. The ignition bridge is configured to vaporize when the switch is closed and the second ignition circuit is configured so that the evaporation of the ignition bridge causes a current flow from the second energy storage device to trigger the consumer.

Weitere Ausgestaltungen der Erfindung sind den nachgeordneten Ansprüchen zu entnehmen.Further embodiments of the invention can be found in the dependent claims.

Die besonderen Vorteile der Zündvorrichtung sind darin zu sehen, dass zunächst eine erhebliche Verringerung des Raumbedarfs gegenüber der bekannten Ausführungsform erzielt wird. Verbunden damit wird auch eine nicht geringe Senkung der Herstellkosten erreicht. Weiterhin wird die Streuung der Kennwerte reduziert und die Langzeitstabilität erheblich erhöht. Hinsichtlich der benötigten Versorgungsspannung ist positiv anzumerken, dass diese gegenüber dem Stand der Technik auf keinen Fall erhöht werden muss, da keine besonderen Funkenstrecken verwendet werden müssen.The particular advantages of the ignition device can be seen in the fact that initially a considerable reduction in the space required over the known embodiment is achieved. Associated with this, a not insignificant reduction in production costs is achieved. Furthermore, the scatter of the characteristic values is reduced and the long-term stability is considerably increased. With regard to the required supply voltage is positive to note that this must be increased over the prior art under any circumstances, since no special spark gaps must be used.

Ausführungsbeispiele der Erfindung sind in den Figuren der Zeichnung schematisch vereinfacht dargestellt und werden im Folgenden näher beschrieben. Es zeigen:

Fig. 1a:
eine erste Ausführungsform für die Initiierung eines niederohmigen Verbrauchers in der Ruhephase,
Fig. 1b:
die Zündvorrichtung aus Figur 1 a in der ersten Aktivierungsphase,
Fig. 1c:
die Zündvorrichtung aus Figur 1 a in der Zündphase.
Fig. 2a:
eine weitere Ausführungsform mit integriertem EFI in der Ruhephase,
Fig. 2b:
die Zündvorrichtung aus Figur 2a in der ersten Aktivierungsphase,
Fig. 2c:
die Zündvorrichtung aus Fig. 2a in der zweiten Aktivierungsphase,
Fig. 2d:
die Zündvorrichtung aus Fig. 2a in der Zündphase.
Embodiments of the invention are shown schematically simplified in the figures of the drawing and will be described in more detail below. Show it:
Fig. 1a:
a first embodiment for the initiation of a low-impedance consumer in the quiescent phase,
Fig. 1b:
the ignition device off FIG. 1 a in the first activation phase,
Fig. 1c:
the ignition device off FIG. 1 a in the ignition phase.
Fig. 2a:
another embodiment with integrated EFI in the resting phase,
Fig. 2b:
the ignition device off FIG. 2a in the first activation phase,
Fig. 2c:
the ignition device off Fig. 2a in the second activation phase,
Fig. 2d:
the ignition device off Fig. 2a in the ignition phase.

In den Figuren 1a, 1b und 1c ist ein erstes Ausführungsbeispiel dargestellt. Anhand der Figur 1a, in der der Ruhezustand der Zündvorrichtung gezeigt ist, werden zunächst die Bestandteile der Zündvorrichtung erläutert. Die obere Hälfte der Figur 1 zeigt die einzelnen, voneinander separierten Teile in der Draufsicht und auch vereinfacht deren äußere Beschaltung. Die untere Hälfte stellt einen Schnitt entlang der gedachten Mittellinie der Teile aus der oberen Hälfte dar und verdeutlicht, dass die Teile zusammen ein kompaktes Bauelement ergeben.In the FIGS. 1a, 1b and 1c a first embodiment is shown. Based on FIG. 1a , In which the idle state of the ignition device is shown, the components of the ignition device are first explained. The upper half of the FIG. 1 shows the individual, separated parts in the plan view and also simplifies their external wiring. The lower half represents a section along the imaginary center line of the parts from the upper half and illustrates that the parts together result in a compact component.

Im Einzelnen umfasst die Zündvorrichtung eine erste dünne Metallschicht M1 und eine weitere dünne Metallschicht M2 zwischen denen eine dünne elektrisch isolierende Kunststoffschicht K angeordnet ist. Die erste Metallschicht weist darüber hinaus noch eine Zündbrücke ZB bekannter Bauart auf. Genau über dieser Zündbrücke ist in der weiteren Metallschicht M2 ein Barrel B angeordnet. Darunter wird eine scharfkantige durchgehende Öffnung verstanden. Beide Metallstreifen sind streifenförmig geformt und bilden somit Längsseiten und Schmalseiten aus. Somit unterteilt die Zündbrücke ZB des Ausführungsbeispiels die Längsseiten etwa in deren Mitte.In detail, the ignition device comprises a first thin metal layer M1 and a further thin metal layer M2 between which a thin electrically insulating plastic layer K is arranged. The first metal layer also has an ignition bridge ZB of known design. Exactly above this ignition bridge a barrel B is arranged in the further metal layer M2. This is understood to mean a sharp-edged, continuous opening. Both metal strips are strip-shaped and thus form long sides and narrow sides. Thus, the ignition bridge ZB of the embodiment divides the long sides approximately in the middle.

An den Schmalseiten der ersten Metallschicht M1 sind im Ausführungsbeispiel die Anschlüsse für die Elemente des so genannten Triggerkreises vorgesehen, der im Wesentlichen aus einer Serienschaltung des Schalters S und eines Kondensators C1 besteht. In der Ruhephase ist der Schalter S geöffnet, so dass im Triggerkreis kein Strom fließen kann. Der Kondensator ist für mittels Halbleitern schaltbaren Betriebsspannungen (< ∼1000 V) ausgelegt und weist eine für das Verdampfen der Zündbrücke ausreichende Kapazität auf.In the exemplary embodiment, the terminals for the elements of the so-called trigger circuit, which essentially consists of a series connection of the switch S and of a capacitor C1, are provided on the narrow sides of the first metal layer M1. In the resting phase, the switch S is open, so that no current can flow in the trigger circuit. The capacitor is designed for semiconductor switchable operating voltages (<~1000 V) and has sufficient capacity to vaporize the fuse bridge.

Darüber hinaus ist vom ersten Metallstreifen M1 eine Serienschaltung des Verbrauchers V und des Zündkondensators C2 zum weiteren Metallstreifen M2 vorgesehen. Der Verbraucher V ist das zu zündende Element, beispielsweise der Zündkreis einer Sprengladung (EFI). Der Zündkondensator C2 weist eine hohe Betriebsspannung (> 1000 V) sowie eine entsprechend hohe Kapazität auf.In addition, a series connection of the load V and the ignition capacitor C2 to the further metal strip M2 is provided by the first metal strip M1. The consumer V is the element to be ignited, for example the ignition circuit of an explosive charge (EFI). The ignition capacitor C2 has a high operating voltage (> 1000 V) and a correspondingly high capacity.

Figur 1b zeigt den Zeitpunkt, an dem der Schalter S geschlossen wird und der Kondensator C1 sich entladen kann. Damit fließt entsprechender Strom und die Zündbrücke ZB verdampft. FIG. 1b shows the time at which the switch S is closed and the capacitor C1 can discharge. This flows corresponding current and the ignition ZB evaporates.

Daran schließt sich die in Figur 1c gezeigte Situation an. Durch das Verdampfen der Zündbrücke ZB entsteht ein enormer Druck, der unmittelbar auf die anliegende Kunststofffolie K einwirkt. Der Teil T der Kunststofffolie K wird dadurch nach oben gedrückt und von dem Barrel B in der weiteren Metallschicht M2 ausgestanzt und durch das Barrel B beschleunigt, wie dies in der Figur 1c gut zu erkennen ist.This is followed by the in Figure 1c shown situation. The evaporation of the ignition bridge ZB creates an enormous pressure, which acts directly on the adjacent plastic film K. The part T of the plastic film K is thereby pushed up and punched out of the barrel B in the further metal layer M2 and accelerated by the barrel B, as shown in the Figure 1c easy to recognize.

Aufgrund der geringen Dicke der Kunststofffolie K entsteht gleichzeitig ein Zündfunke ZF durch die Öffnung, welche das Teil T der Kunststofffolie hinterlassen hat. Damit ist der Zündkreis mittels dieses Hochspannungsschalters über die beiden Metallschichten M1 und M2 und den Kondensator C2 und den Verbraucher V geschlossen und der Verbraucher V wird initiiert.Due to the small thickness of the plastic film K simultaneously creates a spark ZF through the opening, which has left the part T of the plastic film. Thus, the ignition circuit is closed by means of this high voltage switch via the two metal layers M1 and M2 and the capacitor C2 and the consumer V and the consumer V is initiated.

Eine andere Ausführungsform der Erfindung, die jedoch nach dem gleichen Prinzip arbeitet, ist in einzelnen Phasen in den Figuren 2a, 2b, 2c und 2d dargestellt. Die Figuren sind wiederum in eine in der oberen Hälfte angeordnete Darstellung der einzelnen Bestandteile in der Draufsicht und eine in der unteren Hälfte dargestellten Schnitt entlang der gedachten Mittellinie der oben dargestellten Bauteile aufgeteilt. In der oberen Hälfte ist auch die externe Beschaltung mit Kondensatoren angedeutet.Another embodiment of the invention, but operates on the same principle is in individual phases in the FIGS. 2a, 2b . 2c and 2d shown. The figures are in turn divided into a top half arranged representation of the individual components in the plan view and a section shown in the lower half along the imaginary center line of the components shown above. The upper half also indicates the external wiring with capacitors.

Diese Ausführungsform der Zündvorrichtung umfasst ebenfalls eine erste dünne Metallschicht M12, die wiederum eine Zündbrücke ZB aufweist, sowie eine weitere dünne Metallschicht M22, die von der ersten Metallschicht durch eine dünne isolierende Kunststofffolie K getrennt ist. Eine Serienschaltung (Triggerkreis) aus dem Schalter S und der Kondensator C1 ist mit den beiden Enden der Zündbrücke ZB verbunden.This embodiment of the ignition device likewise comprises a first thin metal layer M12, which in turn has an ignition bridge ZB, and a further thin metal layer M22, which is separated from the first metal layer by a thin insulating plastic film K. A series circuit (trigger circuit) from the switch S and the capacitor C1 is connected to the two ends of the ignition bridge ZB.

Die Situation unmittelbar nach dem Schließen des Schalters S ist in der Figur 2b dargestellt. Die Ladung des Kondensators C1 bewirkt das Verdampfen der Zündbrücke ZB. Aufgrund des erzeugten Drucks wird wiederum ein Teil T der Kunststofffolie K ausgestanzt und durch das Barrel B beschleunigt.The situation immediately after the closing of the switch S is in the FIG. 2b shown. The charge of the capacitor C1 causes the evaporation of the ignition bridge ZB. Due to the pressure generated in turn a part T of the plastic film K is punched out and accelerated by the barrel B.

Wie in Figur 2c dargestellt kann sich aufgrund der aus der Kunststofffolie ausgestanzten Öffnung der Zündfunke ZF ausbilden. Damit wird der Zündkreis von der ersten Metallfolie M12 über den Kondensator C2 zur weiteren Metallfolie M22 geschlossen und der in der ersten Metallfolie M12 außerhalb der Triggerschaltung angeordnete EFI (Exploding Foil Initiator) wird gezündet.As in Figure 2c can be formed due to the punched out of the plastic film opening of the spark ZF. This is the ignition of the first metal foil M12 is closed via the capacitor C2 to the further metal foil M22 and the EFI (Exploding Foil Initiator) arranged outside the trigger circuit in the first metal foil M12 is ignited.

Auch der EFI stanzt aus der Kunststofffolie K einen Kunststoffflyer KF aus. Hierfür weist die weitere Metallfolie M22 ebenfalls ein Bauteil mit der Funktion B2 eines Barrels auf, welches genau über dem EFI angeordnet ist. Der Kunststoffflyer KF ist hinsichtlich seiner Dynamik so dimensioniert, dass er mit seinem Impuls den Booster (Sekundärsprengstoffe z.B. HNS) initiieren kann.The EFI also stamped a plastic flyer KF out of the plastic film K. For this purpose, the further metal foil M22 likewise has a component with the function B2 of a barrel, which is arranged exactly above the EFI. The plastic flyer KF is dimensioned in terms of its dynamics so that it can initiate the booster (secondary explosives, for example HNS) with its impulse.

Die beschriebene Ausführungsform ist beispielhaft und vereinfacht dargestellt. In einer Realisierung ist es vorgesehen, eine Bauform zu entwickeln, die neben dem EFI und dem als Sprengstoffpressling ausgeführten Booster auch der Schalter und der Kondensator des Zündkreises integrale Bestandteile der erfindungsgemäßen Zündvorrichtung sind.The described embodiment is shown by way of example and simplified. In one implementation, it is envisaged to develop a design which, in addition to the EFI and the booster designed as an explosive compact, also the switch and the capacitor of the ignition circuit are integral components of the ignition device according to the invention.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

M1, M12M1, M12
erste Metallschichtfirst metal layer
M2, M22M2, M22
weitere Metallschichtanother metal layer
KK
KunststoffschichtPlastic layer
B, B2B, B2
Barrelbarrel
TT
Teil (der Kunststoffschicht)Part (the plastic layer)
KFKF
KunststoffflyerPlastic Flyers
SS
Schalterswitch
C1C1
Kondensator (< 300 V)Capacitor (<300 V)
C2C2
Kondensator (> 1500 V)Capacitor (> 1500 V)
VV
Verbraucherconsumer
ZBFor example,
Zündbrückeignition bridge
ZFZF
Zündfunkespark
EFIEFI
Exploding Foil InitiatorExploding Foil Initiator
FLFL
Flyerflyer
HNSHNS
Booster (Sprengstoffpressling; Sekundärsprengstoff)Booster (explosive compact, secondary explosive)

Claims (15)

  1. Ignition device for an explosive charge of an active body, comprising:
    a first thin, strip-shaped metal layer (M1);
    a second thin, strip-shaped metal layer (M2) arranged parallel to the first metal layer (M1);
    a thin plastic layer (K) arranged between the first thin metal layer (M1) and the second thin metal layer (M2),
    wherein the thin plastic layer (K) is an electrically insulating layer;
    a first ignition circuit with an ignition bridge (ZB) and
    a first energy storage device (C1) wired in series on both sides of a switch (S);
    a second ignition circuit with a second energy storage device (C2) and a consumer (V) which is connected in series between a first end of the first thin metal layer (M1) and a first end of the second metal layer (M2); and
    a first barrel (B) provided in the second metal layer (M2), being directly arranged opposing the ignition bridge (ZB),
    wherein the ignition bridge (ZB) is provided to evaporate when the switch (S) is closed; and
    wherein the second ignition circuit is provided such that the evaporation of the ignition bridge (ZB) effects a flow of current from the second energy storage device (C2) in order to trigger the consumer (V).
  2. Ignition device according to claim 1, wherein the thin plastic layer (K) is configured such that the evaporation of the ignition bridge (ZB) causes a short circuit between the first (M1) and the second (M2) thin metal layer via the thin plastic layer (K).
  3. Ignition device according to claim 2, wherein the short circuit is caused by means of an opening (T) provided in the thin plastic layer (K), wherein a portion of the thin plastic layer (K) is punched out during the evaporation of the ignition bridge (ZB).
  4. Ignition device according to claim 3, wherein the short circuit comprises an ignition spark (ZF) which passes through via the opening between the first (M1) and the second (M2) thin metal layer.
  5. Ignition device according to claim 3, wherein the cut-out portion of the thin plastic layer (K) is ejected from the barrel (B), wherein the barrel (B) is arranged opposing the ignition bridge (ZB) opposing the thin plastic layer (K) .
  6. Ignition device according to claim 1, wherein the ignition bridge (ZB) is provided in the first thin metal layer (M1).
  7. Ignition device according to claim 1, wherein the ignition bridge (ZB) is configured such that it is evaporated via a flow of current via the ignition bridge (ZB) when the switch (S) is closed, wherein the flow of current is generated by means of the first energy storage device (C1).
  8. Ignition device according to claim 1, wherein the consumer (V) is an ignition circuit of the explosive charge.
  9. Ignition device according to claim 1, wherein the first ignition circuit is a trigger circuit.
  10. Ignition device according to claim 1, wherein the second ignition circuit comprises the first thin metal layer (M1), the second energy storage device (C2), the consumer (V) and the second thin metal layer (M2),
    wherein the ignition device additionally has a secondary explosive (HNS), and
    wherein the secondary explosive (HNS) is configured such that it is triggered by means of a triggering of the consumer (V).
  11. Ignition device according to claim 2, wherein the short circuit is caused by means of an opening provided in the thin plastic layer (K), wherein a first portion of the thin plastic layer (K) is punched out during the evaporation of the ignition bridge (ZB).
  12. Ignition device according to claim 11, wherein the first portion of the expelled thin plastic layer (K) is ejected from the first barrel (B).
  13. Ignition device according to claim 12, wherein the ignition bridge (ZB) and the consumer (V) are provided integral with the first thin metal layer (M1);
    wherein the first energy storage device (C1) is connected to the first thin metal layer (M1) between the ignition bridge (ZB) and the consumer (V),
    wherein the short circuit enables a flow of current to be caused via the second ignition circuit, and wherein the consumer (V) is configured such that it is triggered by means of the flow of current via the second ignition circuit.
  14. Ignition device according to claim 13, wherein the device is configured such that on triggering the consumer (V) a plastic flyer (KF) is punched out of the plastic layer (K) and is ejected from a second barrel (B) provided in the second thin metal layer (M2) in order to initiate the secondary explosive (HNS), wherein the second barrel (B) lies directly opposing the consumer (V) and opposing the thin plastic layer (K).
  15. Ignition device according to any one of claims 10 to 14, wherein the consumer is an exploding foil initiator (EFI) .
EP16001468.4A 2015-07-23 2016-07-01 Ignition device Active EP3121552B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015009576.5A DE102015009576B3 (en) 2015-07-23 2015-07-23 detonator

Publications (2)

Publication Number Publication Date
EP3121552A1 EP3121552A1 (en) 2017-01-25
EP3121552B1 true EP3121552B1 (en) 2018-09-19

Family

ID=56344955

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16001468.4A Active EP3121552B1 (en) 2015-07-23 2016-07-01 Ignition device

Country Status (4)

Country Link
US (1) US9995560B2 (en)
EP (1) EP3121552B1 (en)
DE (1) DE102015009576B3 (en)
ES (1) ES2698418T3 (en)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4471697A (en) * 1982-01-28 1984-09-18 The United States Of America As Represented By The United States Department Of Energy Bidirectional slapper detonator
US4928595A (en) * 1988-04-27 1990-05-29 The United States Of America As Represented By The United States Department Of Energy Reverse slapper detonator
US5080016A (en) * 1991-03-20 1992-01-14 The United States Of America As Represented By The Department Of Energy Hydrogen loaded metal for bridge-foils for enhanced electric gun/slapper detonator operation
US5347929A (en) * 1993-09-01 1994-09-20 Schlumberger Technology Corporation Firing system for a perforating gun including an exploding foil initiator and an outer housing for conducting wireline current and EFI current
US6553911B1 (en) * 1997-04-30 2003-04-29 Erico International Corporation Exothermic reactions and methods
DE19983586B4 (en) * 1998-09-24 2008-05-15 Schlumberger Technology B.V. Igniting explosive devices
FR2811749B1 (en) 2000-07-13 2003-03-07 Tda Armements Sas HIGH-ENERGY SECURE ELECTRO-PYROTECHNIC INITIATOR
US6851370B2 (en) * 2002-04-30 2005-02-08 Kdi Precision Products, Inc. Integrated planar switch for a munition
US8281718B2 (en) * 2009-12-31 2012-10-09 The United States Of America As Represented By The Secretary Of The Navy Explosive foil initiator and method of making
CA2802888C (en) * 2010-06-18 2018-08-21 Battelle Memorial Institute Non-energetics based detonator
DE102011108000A1 (en) * 2011-07-19 2013-01-24 Diehl Bgt Defence Gmbh & Co. Kg EFI ignition module
DE102014010179B3 (en) * 2014-07-09 2015-03-05 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Shock resistant EFI ignition device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
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Also Published As

Publication number Publication date
ES2698418T3 (en) 2019-02-04
EP3121552A1 (en) 2017-01-25
US9995560B2 (en) 2018-06-12
DE102015009576B3 (en) 2016-08-11
US20170023338A1 (en) 2017-01-26

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