EP1335179B2 - Pyrotechnical ignition chain with a plastic detonator carrier including an integrated metal insert layer - Google Patents

Pyrotechnical ignition chain with a plastic detonator carrier including an integrated metal insert layer Download PDF

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Publication number
EP1335179B2
EP1335179B2 EP03001828A EP03001828A EP1335179B2 EP 1335179 B2 EP1335179 B2 EP 1335179B2 EP 03001828 A EP03001828 A EP 03001828A EP 03001828 A EP03001828 A EP 03001828A EP 1335179 B2 EP1335179 B2 EP 1335179B2
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EP
European Patent Office
Prior art keywords
plastic
metal insert
ignition
ignition element
igniter support
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Expired - Lifetime
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EP03001828A
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German (de)
French (fr)
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EP1335179A1 (en
EP1335179B1 (en
Inventor
Uwe Brede
Eduard Berenz
Anton Bretfeld
Harald Frank
Jürgen Knauss
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Delphi Technologies Inc
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Delphi Technologies Inc
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Priority claimed from DE10236508A external-priority patent/DE10236508A1/en
Application filed by Delphi Technologies Inc filed Critical Delphi Technologies Inc
Publication of EP1335179A1 publication Critical patent/EP1335179A1/en
Publication of EP1335179B1 publication Critical patent/EP1335179B1/en
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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
    • F42B3/26—Arrangements for mounting initiators; Accessories therefor, e.g. tools

Definitions

  • the invention relates to a pyrotechnic ignition chain with a Anzündmoi plastic according to the preamble of claim 1 and 2, (see. EP-A-0 943 503 ).
  • the DE-A1-199 60 642 describes a pyrotechnic ignition chain with a primer carrier made of plastic.
  • a Anzündelement is integrated, which protrudes with its active part of the Anzündy and projects into a metal housing, which is attached to the ignition carrier.
  • a metal housing In the metal housing an amplifier charge is arranged.
  • the primer carrier made of plastic has the function of mechanically fixing the ignition element in the metal housing. In addition, it must ensure that, when the ignition chain functions, no gas can escape between the plastic primer / ignition element and / or plastic primer / metal housing.
  • the ignition carrier Due to the necessary mechanical strength in the function of the ignition chain in conjunction with the complex shape in the contacting region of the ignition element, the ignition carrier has hitherto preferably been produced by machining as a combined rotary milled part. This production method is very expensive.
  • the invention is based on the object to improve a pyrotechnic ignition chain according to the preamble of claim 1 and 2 in view of the mechanical stability and the ingress of moisture.
  • the metal insert is a stamped or bent part.
  • the plastic of the ignition carrier is doped with mica.
  • the ignition element is partially or completely encapsulated by the plastic of the ignition carrier.
  • the metal insert is connected to the ignition element. As a result, only a part needs to be encapsulated with the plastic.
  • the metal insert is cup-shaped, wherein the edge of the metal insert is flanged or folded and is led out of the primer.
  • the invention is characterized in that, instead of the costly machining, a stamped, bent part is used, which is subsequently injection-molded as an insert.
  • the metal insert or the punching, - bending part takes over the mechanical support, which can be performed with the same strength due to its rigidity with a smaller wall thickness than a rotary milled part; This additional weight savings is achieved.
  • the plastic in the ignition carrier ensures the sealing function between primer / ignition element and / or primer / metal housing.
  • the required complex contour in the contacting region of the ignition element can also be achieved with the plastic by means of injection molding.
  • the plastic of the ignition carrier can be doped with mica. This ensures that the high-resistance plastic becomes low-resistance at high voltage and dissipates the ESD discharges and that no unwanted tripping occurs.
  • Fig. 1 a typical ignition chain is shown, in which the primer carrier 4 can be used made of plastic.
  • the ignition element 2 is partially encapsulated in the ignition carrier 4 and the metal insert 3 is integrated.
  • the Anzündiva 4 in turn is connected to a sleeve 1 which contains a sealing cup 5 in the lower part, which protects the subsequent booster charge 6 in the installed state against moisture and thus ensures the function of the ignition chain safely over the entire service life.
  • a vapor barrier can be installed. This can be achieved by, for example, moistening the ignition element 2 with a corresponding sealing compound which, after encapsulation, becomes effective on the ignition element 2 due to the heat introduced and / or shrinkage of the plastic.
  • Another way to preserve the vapor barrier is that for the areas 13 and 14 an elastic plastic is used. This can be z. B. in an injection process (2-component injection) respectively.
  • the plastic of the igniter carrier 4 can be doped with mica, as described in the introduction.
  • the metal insert 3 which is integrated in the ignition carrier 4 and the ignition element 2 in the area 3a, 3b securely supported. Due to the shape and manufacturing process of the metal insert 3 as a bending part high rigidity is given, which ensures the support sure. This ensures that no deformation of the metal insert 3 takes place even under the highest pressure load.
  • the metal insert 3 is designed so that it protrudes in the area 3b from the ignition carrier 4 and can be fixed in the higher-level device.
  • Fig. 2 is outlined a possible form of metal insert 3. As can be seen, this part can be preferably manufactured as a stamped part, which is subsequently transformed accordingly.
  • the metal part has recesses 8 in order to improve the positive connection metal insert 3 - plastic.
  • the metal part 3 is folded over in order to obtain an additional reinforcement.
  • the metal insert 3 can also be additionally deformed in the inner region 3a in order to increase the rigidity, as shown at 3c.
  • Fig. 3 is the contacting of the ignition element 2 in the area 7, shown.
  • a contact fuse 9 is required for the contacting, which is held in the primer 4 by means of corresponding recesses 10 in position.
  • Fig. 4 is another possible embodiment of Anzündmons 4 shown.
  • the entire ignition element 2 is encapsulated.
  • Fig. 5 is a further technical possibility of the arrangement of the metal insert 3 in the ignition carrier 4 shown.
  • the metal insert 3 is connected to the ignition element 2, this can, for. B. by welding 12. As a result, an additional mechanical fixation of the two parts is achieved.
  • Another advantage is that the injection process can be carried out in a simplified manner since only one part (instead of two parts) has to be inserted.
  • booster charge 6 is understood a booster charge and the sleeve 1 is a housing.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Laminated Bodies (AREA)

Abstract

Pyrotechnical ignition unit comprises a metal insert (3) which is located in the carrier (4) of the ignition initiator element (2), serves as a mechanical support structure, and is surrounded by the plastic material of the carrier.

Description

Die Erfindung betrifft eine pyrotechnische Zündkette mit einem Anzündträger aus Kunststoff nach dem Oberbegriff des Anspruchs 1 und 2, (vgl. EP-A-0 943 503 ).The invention relates to a pyrotechnic ignition chain with a Anzündträger plastic according to the preamble of claim 1 and 2, (see. EP-A-0 943 503 ).

Die DE-A1-199 60 642 beschreibt eine pyrotechnische Zündkette mit einem Anzündträger aus Kunststoff. In dem Anzündträger ist ein Anzündelement integriert, welches mit seinem Wirkteil aus dem Anzündträger herausragt und in ein Metallgehäuse ragt, welches am Anzündträger befestigt ist. Im Metallgehäuse ist eine Verstärkerladung angeordnet.The DE-A1-199 60 642 describes a pyrotechnic ignition chain with a primer carrier made of plastic. In the Anzündträger a Anzündelement is integrated, which protrudes with its active part of the Anzündträger and projects into a metal housing, which is attached to the ignition carrier. In the metal housing an amplifier charge is arranged.

Der Anzündträger aus Kunststoff hat die Funktion das Anzündelement mechanisch sicher im Metallgehäuse zu fixieren. Zusätzlich muss er gewährleisten, dass bei Funktion der Zündkette kein Gas zwischen Kunststoffanzündträger/Anzündelement und/oder Kunststoffanzündträger/Metallgehäuse entweichen kann.The primer carrier made of plastic has the function of mechanically fixing the ignition element in the metal housing. In addition, it must ensure that, when the ignition chain functions, no gas can escape between the plastic primer / ignition element and / or plastic primer / metal housing.

Aufgrund der notwendigen mechanischen Festigkeit bei Funktion der Zündkette in Verbindung mit der aufwendigen Form im Kontaktierungsbereich des Anzündelements, wird der Anzündträger bisher vorzugsweise zerspanend als kombiniertes Dreh, - Frästeil gefertigt. Diese Fertigungsweise ist sehr kostenintensiv.Due to the necessary mechanical strength in the function of the ignition chain in conjunction with the complex shape in the contacting region of the ignition element, the ignition carrier has hitherto preferably been produced by machining as a combined rotary milled part. This production method is very expensive.

Der Erfindung liegt die Aufgabe zu Grunde, eine pyrotechnische Zündkette nach dem Oberbegriff des Anspruchs 1 und 2 im Hinblick auf die mechanische Stabilität und das Eindringen von Feuchtigkeit zu verbessern.The invention is based on the object to improve a pyrotechnic ignition chain according to the preamble of claim 1 and 2 in view of the mechanical stability and the ingress of moisture.

Erfindungsgemäß wird diese Aufgabe durch die Merkmale des Anspruchs 1 und 2 gelöst.According to the invention, this object is solved by the features of claims 1 and 2.

In bevorzugter Ausführungsform ist die Metalleinlage ein Stanz- oder Biegeteil.In a preferred embodiment, the metal insert is a stamped or bent part.

Vorteilhafterweise ist der Kunststoff des Anzündträgers mit Glimmer dotiert.Advantageously, the plastic of the ignition carrier is doped with mica.

Das Anzündelement ist teilweise oder vollständig vom Kunststoff des Anzündträgers umspritzt.The ignition element is partially or completely encapsulated by the plastic of the ignition carrier.

Bereichsweise kann als Kunststoff für den Anzündträger ein elastischer Kunststoff verwendet werden.Area can be used as plastic for the Anzündträger an elastic plastic.

Die Metalleinlage ist mit dem Anzündelement verbunden. Hierdurch braucht nur ein Teil mit dem Kunststoff umspritzt zu werden.The metal insert is connected to the ignition element. As a result, only a part needs to be encapsulated with the plastic.

Vorteilhaft ist die Metalleinlage tassenförmig ausgebildet, wobei der Rand der Metalleinlage umgebördelt oder umgelegt ist und aus dem Anzündträger herausgeführt ist.Advantageously, the metal insert is cup-shaped, wherein the edge of the metal insert is flanged or folded and is led out of the primer.

Zur besseren Verbindung mit dem Kunststoff sind in der Metalleinlage Aussparungen angeordnet.For better connection with the plastic recesses are arranged in the metal insert.

Die Erfindung zeichnet sich in bevorzugter Ausführungsform dadurch aus, dass statt der aufwendigen Zerspanung ein Stanz, - Biegeteil verwendet wird, das als Einlegeteil nachfolgend umspritzt wird.In a preferred embodiment, the invention is characterized in that, instead of the costly machining, a stamped, bent part is used, which is subsequently injection-molded as an insert.

Diese Fertigungsweise ist sehr kostengünstig, da so wohl das Einlegeteil als auch der nachfolgende Spritzvorgang kostengünstig realisiert werden können. Beide Herstellarten können auch mit Mehrfachwerkzeugen durchgeführt werden, was zu einer zusätzlichen Kostenreduzierung führt.This manufacturing process is very cost-effective, as well as the insert and the subsequent Injection process can be realized inexpensively. Both production types can also be carried out with multiple tools, which leads to an additional cost reduction.

In dieser Anordnung übernimmt die Metalleinlage bzw. das Stanz,- Biegeteil die mechanische Abstützung, das bei gleicher Festigkeit aufgrund seiner Steifigkeit mit geringerer Wandstärke ausgeführt werden kann als ein Dreh- Frästeil; dadurch wird zusätzliche eine Gewichtsersparnis erreicht.In this arrangement, the metal insert or the punching, - bending part takes over the mechanical support, which can be performed with the same strength due to its rigidity with a smaller wall thickness than a rotary milled part; This additional weight savings is achieved.

Der Kunststoff im Anzündträger gewährleistet die Dichtfunktion zwischen Anzündträger/Anzündelement und/oder Anzündträger/Metallgehäuse. Die erforderliche aufwendige Kontur im Kontaktierungsbereich des Anzündelements kann ebenfalls mit dem Kunststoff mittels Spritzvorgang erreicht werden.The plastic in the ignition carrier ensures the sealing function between primer / ignition element and / or primer / metal housing. The required complex contour in the contacting region of the ignition element can also be achieved with the plastic by means of injection molding.

In der Praxis hat sich bei den herkömmlichen Anzündträgern herausgestellt, dass durch vagabundierende leitfähige Verunreinigungen, z. B. Metallspäne eine nicht zulässige elektrische Verbindung im Kontaktierungsbereich zwischen Anzündelement und Anzündträger entstehen kann, die zu Funtionsversagern der Zündkette führen kann. Bei einem Kunststoffanzündträger kann diese elektrische Verbindung nicht erfolgen, da dieser im Kontaktierungsbereich isoliert.In practice, it has been found in the conventional igniters that by stray conductive impurities, eg. B. metal chips a non-permissible electrical connection in the contacting area between the ignition element and Anzündträger may arise, which can lead to Funtionsversagern the ignition chain. In a Kunststoffanzündträger this electrical connection can not be made, as this isolated in the contact area.

Zur Erhöhung der Sicherheit gegen elektrostatische Entladungen (ESD) zwischen Anzündelement und Metallgehäuse kann der Kunststoff des Anzündträgers mit Glimmer dotiert werden. Dadurch wird erreicht, dass der hochohmige Kunststoff bei hoher Spannung niederohmig wird und die ESD - Entladungen ableitet und keine ungewollte Auslösung erfolgt.To increase the safety against electrostatic discharges (ESD) between ignition element and metal housing, the plastic of the ignition carrier can be doped with mica. This ensures that the high-resistance plastic becomes low-resistance at high voltage and dissipates the ESD discharges and that no unwanted tripping occurs.

Weitere Merkmale der Erfindung zeigen die Figuren, die nachfolgend beschrieben sind.Further features of the invention are shown in the figures, which are described below.

In Fig. 1 ist eine typische Zündkette dargestellt, in die der Anzündträger 4 aus Kunststoff eingesetzt werden kann.In Fig. 1 a typical ignition chain is shown, in which the primer carrier 4 can be used made of plastic.

Wie daraus ersichtlich, ist im Anzündträger 4 das Anzündelement 2 teilweise umspritzt und die Metalleinlage 3 integriert. Der Anzündträger 4 wiederum ist mit einer Hülse 1 verbunden, die im unteren Teil einen Dichtnapf 5 enthält, der die nachfolgende Boosterladung 6 im eingebauten Zustand gegen Feuchtigkeit schützt und somit die Funktion der Zündkette sicher über die gesamte Einsatzdauer gewährleistet.As can be seen, the ignition element 2 is partially encapsulated in the ignition carrier 4 and the metal insert 3 is integrated. The Anzündträger 4 in turn is connected to a sleeve 1 which contains a sealing cup 5 in the lower part, which protects the subsequent booster charge 6 in the installed state against moisture and thus ensures the function of the ignition chain safely over the entire service life.

Zur Erhöhung der Dichtigkeit im Bereich 13 zwischen Anzündelement 2 und dem Kunststoff des Anzündträgers 4 und Bereich 14 zwischen Hülse 1 und dem Kunststoff des Anzündträgers 4 kann eine Dampfsperre eingebaut werden. Dies kann dadurch erreicht werden, dass z.B. das Anzündelement 2 mit einer entsprechenden Dichtmasse benetzt wird, die nach dem Umspritzen aufgrund der eingeleiteten Wärme und/oder des Aufschrumpfens des Kunststoffes auf das Anzündelement 2 wirksam wird. Eine weitere Möglichkeit zur Erhaltung der Dampfsperre besteht darin, dass für die Bereiche 13 und 14 ein elastischer Kunststoff eingesetzt wird. Dies kann z. B. in einem Spritzvorgang (2-Komponenten- Spritzung) erfolgen.To increase the tightness in the area 13 between the ignition element 2 and the plastic of the ignition carrier 4 and region 14 between the sleeve 1 and the plastic of the ignition carrier 4, a vapor barrier can be installed. This can be achieved by, for example, moistening the ignition element 2 with a corresponding sealing compound which, after encapsulation, becomes effective on the ignition element 2 due to the heat introduced and / or shrinkage of the plastic. Another way to preserve the vapor barrier is that for the areas 13 and 14 an elastic plastic is used. This can be z. B. in an injection process (2-component injection) respectively.

Mit dieser Anordnung wird erreicht, dass das Anzündelement 2 im Anzündträger 4, und somit in der pyrotechnischen Zündkette, über die gesamte Lebensdauer auch unter Berücksichtigung aller Umwelteinflüsse sicher fixiert ist und keine Feuchtigkeit in die Zündkette eindringen kann.With this arrangement it is achieved that the ignition element 2 in the ignition carrier 4, and thus in the pyrotechnic ignition chain, is securely fixed over the entire service life, taking into account all environmental influences and no moisture can penetrate into the ignition chain.

Um sicherzustellen, dass bei elektrostatischen Entladungen (ESD) zwischen Anzündelement 2 und Hülse 1 keine ungewollte Auslösung erfolgt, kann der Kunststoff des Anzündträgers 4 mit Glimmer dotiert werden, wie Eingangs beschrieben ist.To ensure that electrostatic discharges (ESD) between the ignition element 2 and sleeve 1 no unwanted tripping takes place, the plastic of the igniter carrier 4 can be doped with mica, as described in the introduction.

Bei Funktion der Zündkette entsteht durch die Umsetzung der Pyrotechnik im Anzündelement 2 und der nachgeschalteten Boosterladung 6 kurzzeitig ein hoher Gasdruck, der auch auf das Anzündelement 2 und den Anzündträger 4 als axiale Kraft wirksam wird, die das Anzündelement 2 in den Anzündträger 4 kraftschlüssig dichtend drückt.In function of the ignition caused by the implementation of the pyrotechnics in the ignition element 2 and the downstream booster charge 6 briefly a high gas pressure, which is also effective on the ignition element 2 and the Anzündträger 4 as an axial force that presses the ignition element 2 in the primer 4 frictionally sealing ,

Um zu vermeiden, dass das Anzündelement 2 unzulässigerweise in den Anzündträger 4 eingedrückt wird und dadurch das Gas zwischen Anzündelement 2 und Anzündträger 4 ungewollt teilweise oder ganz entweichen kann oder im Extremfall das Anzündelement 2 durch den Anzündträger 4 gedrückt wird, muss eine Abstützung im Träger erfolgen.In order to avoid that the ignition element 2 is pressed inadmissible in the Anzündträger 4 and thereby the gas between the ignition 2 and Anzündträger 4 unintentionally partially or completely escape or in extreme cases, the ignition element 2 is pressed by the Anzündträger 4, a support in the carrier must be done ,

Dies wird durch die Metalleinlage 3 erreicht, die im Anzündträger 4 integriert ist und das Anzündelement 2 im Bereich 3a, 3b sicher abstützt. Durch die Form und Fertigungsweise der Metalleinlage 3 als Biegeteil ist eine hohe Steifigkeit gegeben, die die Abstützung sicher gewährleistet. Damit ist sichergestellt, dass auch bei höchster Druckbelastung keine Verformung der Metalleinlage 3 erfolgt.This is achieved by the metal insert 3, which is integrated in the ignition carrier 4 and the ignition element 2 in the area 3a, 3b securely supported. Due to the shape and manufacturing process of the metal insert 3 as a bending part high rigidity is given, which ensures the support sure. This ensures that no deformation of the metal insert 3 takes place even under the highest pressure load.

Zur Fixierung des Anzündträgers 4 im übergeordnetem Gerät ist die Metalleinlage 3 so ausgelegt, dass diese im Bereich 3b aus dem Anzündträger 4 herausragt und im übergeordnetem Gerät befestigt werden kann.To fix the ignition carrier 4 in the higher-level device, the metal insert 3 is designed so that it protrudes in the area 3b from the ignition carrier 4 and can be fixed in the higher-level device.

In Fig. 2 ist eine mögliche Form der Metalleinlage 3 skizziert. Wie daraus ersichtlich, kann dieses Teil vorzugsweise als Stanzteil gefertigt werden, das nachfolgend entsprechend umgeformt wird.In Fig. 2 is outlined a possible form of metal insert 3. As can be seen, this part can be preferably manufactured as a stamped part, which is subsequently transformed accordingly.

Das Metallteil weist Aussparungen 8 auf, um die formschlüssige Verbindung Metalleinlage 3 - Kunststoff zu verbessern.The metal part has recesses 8 in order to improve the positive connection metal insert 3 - plastic.

Im äußeren Bereich 3b ist das Metallteil 3 umgelegt, um eine zusätzliche Verstärkung zu erhalten.In the outer region 3b, the metal part 3 is folded over in order to obtain an additional reinforcement.

Bei Bedarf kann die Metalleinlage 3 auch im inneren Bereich 3a zusätzlich verformt werden, um die Steifigkeit zu erhöhen, wie mit 3c dargestellt ist.If necessary, the metal insert 3 can also be additionally deformed in the inner region 3a in order to increase the rigidity, as shown at 3c.

In Fig. 3 ist die Kontaktierung des Anzündelements 2 im Bereich 7, dargestellt. Wie ersichtlich, ist für die Kontaktierung eine Kontaktsicherung 9 erforderlich, die im Anzündträger 4 mittels entsprechender Aussparungen 10 in Position gehalten wird.In Fig. 3 is the contacting of the ignition element 2 in the area 7, shown. As can be seen, a contact fuse 9 is required for the contacting, which is held in the primer 4 by means of corresponding recesses 10 in position.

Zusätzlich sind im Anzündträger 4 noch Aussparungen 11 erforderlich, um eine Verriegelung 15 des Steckers (Stecker ist gestrichelt und Verriegelung um 90° gedreht dargestellt) im Anzündträger 4 zu ermöglichen. Mit der Verriegelung 15 wird gleichzeitig auch die Kontaktsicherung fixiert.In addition, recesses 11 are still required in Anzündträger 4 to a lock 15 of the plug (plug is dashed and locking shown rotated by 90 °) in Anzündträger 4 to allow. With the lock 15, the contact security is fixed at the same time.

In Fig. 4 ist eine weitere mögliche Ausführung eines Anzündträgers 4 dargestellt. Bei dieser Variante ist das komplette Anzündelement 2 umspritzt.In Fig. 4 is another possible embodiment of Anzündträgers 4 shown. In this variant, the entire ignition element 2 is encapsulated.

Dies hat gegenüber der Fig. 1 den Vorteil, dass eine vollständige elektrische Isolierung zwischen Anzündelement 2 und Hülse 1 erreicht wird. Damit erhöht sich die elektrostatische Festigkeit der Zündkette. Eine weitere Erhöhung wird dadurch erreicht, dass der Kunststoff des Anzündträgers mit Glimmer dotiert wird, wie anfangs beschrieben ist.This has opposite the Fig. 1 the advantage that a complete electrical insulation between ignition element 2 and sleeve 1 is achieved. This increases the electrostatic strength of the ignition chain. A further increase is achieved by doping the plastic of the igniter carrier with mica, as described above.

In Fig. 5 ist eine weitere technische Möglichkeit der Anordnung der Metalleinlage 3 im Anzündträger 4 dargestellt. Dabei ist die Metalleinlage 3 mit dem Anzündelement 2 verbunden, dies kann z. B. mittels Schweißung 12 erfolgen. Dadurch wird eine zusätzliche mechanische Fixierung der beiden Teile erreicht.In Fig. 5 is a further technical possibility of the arrangement of the metal insert 3 in the ignition carrier 4 shown. The metal insert 3 is connected to the ignition element 2, this can, for. B. by welding 12. As a result, an additional mechanical fixation of the two parts is achieved.

Ein weiterer Vorteil liegt darin, dass der Spritzvorgang vereinfacht durchgeführt werden kann, da nur ein Teil (statt zwei Teile) eingelegt werden muss.Another advantage is that the injection process can be carried out in a simplified manner since only one part (instead of two parts) has to be inserted.

Mit Boosterladung 6 ist eine Verstärkerladung verstanden und die Hülse 1 ist ein Gehäuse.With booster charge 6 is understood a booster charge and the sleeve 1 is a housing.

Claims (8)

  1. A pyrotechnic explosion train with an igniter support (4) of plastic which carries an ignition element (2) and a cylindrical metal case (1) into which the ignition element (2) projects is fastened to the igniter support (4) and a booster charge (6) is arranged in the metal case, wherein a metal insert (3) is integrated in the igniter support (4) for mechanical support and is encased in the plastic of the igniter support (4), characterized in that openings (8) are arranged in the metal insert (3) for better connection to the plastic; and in that the ignition element (2) was wetted with a sealing composition before being encased in plastic.
  2. A pyrotechnic explosion train with an igniter support (4) of plastic which carries an ignition element (2) and a cylindrical metal case (1) into which the ignition element (2) projects is fastened to the igniter support (4) and a booster charge (6) is arranged in the metal case, wherein a metal insert (3) is integrated in the igniter support (4) for mechanical support and is encased in the plastic of the igniter support (4), characterized in that openings (8) are arranged in the metal insert (3) for better connection to the plastic; and in that that the metal insert (3) is connected to the ignition element (2).
  3. An explosion train according to claim 1 or claim 2, characterized in that the metal insert (3) is a stamped part or one made by bending.
  4. An explosion train according to claim 1, 2 or 3, characterized in that the plastic of the igniter support (4) is doped with mica.
  5. An explosion train according to any one of the claims 1 to 4, characterized in that the ignition element (2) is partially or fully encased in the plastic of the igniter support (4).
  6. An explosion train according to any one of the claims 1 to 5, characterized in that an elastic plastic is used area-wise as the plastic for the igniter support (4).
  7. An explosion train according to any one of the claims 1 to 6, characterized in that the metal insert (3) is cup-shaped.
  8. An explosion train according to any one of the claims 1 to 7, characterized in that the margin of the metal insert (3) is flanged or folded and is guided out of the igniter support (4).
EP03001828A 2002-02-09 2003-01-29 Pyrotechnical ignition chain with a plastic detonator carrier including an integrated metal insert layer Expired - Lifetime EP1335179B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10205427 2002-02-09
DE10205427 2002-02-09
DE10236508A DE10236508A1 (en) 2002-02-09 2002-08-09 Pyrotechnic ignition chain with a plastic ignition carrier with integrated metal insert
DE10236508 2002-08-09

Publications (3)

Publication Number Publication Date
EP1335179A1 EP1335179A1 (en) 2003-08-13
EP1335179B1 EP1335179B1 (en) 2007-09-05
EP1335179B2 true EP1335179B2 (en) 2011-08-24

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EP03001828A Expired - Lifetime EP1335179B2 (en) 2002-02-09 2003-01-29 Pyrotechnical ignition chain with a plastic detonator carrier including an integrated metal insert layer

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US (1) US7111558B2 (en)
EP (1) EP1335179B2 (en)
AT (1) ATE372499T1 (en)
CZ (1) CZ2003386A3 (en)
DE (1) DE50308092D1 (en)

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Also Published As

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EP1335179A1 (en) 2003-08-13
ATE372499T1 (en) 2007-09-15
EP1335179B1 (en) 2007-09-05
US7111558B2 (en) 2006-09-26
DE50308092D1 (en) 2007-10-18
CZ2003386A3 (en) 2004-08-18
US20030183110A1 (en) 2003-10-02

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