EP0932015B1 - Detonator - Google Patents
Detonator Download PDFInfo
- Publication number
- EP0932015B1 EP0932015B1 EP99100536A EP99100536A EP0932015B1 EP 0932015 B1 EP0932015 B1 EP 0932015B1 EP 99100536 A EP99100536 A EP 99100536A EP 99100536 A EP99100536 A EP 99100536A EP 0932015 B1 EP0932015 B1 EP 0932015B1
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- EP
- European Patent Office
- Prior art keywords
- detonator
- ignition
- smd
- bridge
- resistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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 an electrothermal detonator according to the preamble of Claim 1 and also extends to the use of a commercially available SMD resistor for creating such a detonator.
- Detonators in which an ignition bridge can be reached by supplying electrical energy Evaporation is heated to the ignition charge in contact with the ignition bridge Heating up to at least its initialization temperature are widely described and in use.
- the classic design which will be discussed in more detail below, is one self-supporting resistance wire for bridging two connection poles for feeding of the electrical ignition current.
- the semiconductor substrate is used for the ignition bridge designed as a controllable electronic switch to ensure that only in the presence of two different control criteria, the ignition current over the Bridge can be released.
- All of these detonators are based on technology monolithically integrated circuits with their known advantages in terms of Mass production, but also their known disadvantages in terms of yield and before all of the problems of individual settings required in practice for the respective
- EP-A-0 248 977 Carrier for a bridge igniter for initiating ignition sets, delay sets and pyrotechnic mixtures and primary primers and primers provided at which is inserted into a metal outer ring, a pierced ceramic body, which for Includes contact pins for the power supply.
- the ignition bridge between them Contact pins is formed between electrically conductive surfaces on the ceramic body, which flatly surround the holes.
- Ignition bridge can be the methods of atomization or vapor deposition or Screen printing can be used.
- An electric bridge igniter with one versus one metallic housing insulates built-in glow bridge wire is known from DE 36 13 134 A1.
- An unwanted one voltage dependent response due to electrostatic charge shifts on both sides parasitic arcing lines with simple to avoid manufacturing technical means
- Wire ends of the glow plug wire including the Surrounding areas of their attachment points on the Terminal poles of the bridge igniter with an insulating layer made of insulating varnish, which after a dive from arcuate bridge wire center area expires or the is dripped onto the area surrounding the attachment points.
- DE 42 36 729 A1 describes a squib with an insulating pole body with electrically conductive Longitudinal stripes, with one arranged on the polar body Glow plug and with connecting wires, the glow plug and the connecting wires each with the longitudinal strips over Solder points are connected, and with at least one Detonator and an outer top coat that matches the detonator covered.
- detonators work after that electrothermal principle. I.e. that by feeding electrical energy the detonator's ignition bridge is usually strongly heated until evaporation. there becomes the one in contact with the ignition bridge Ignition charge warms up beyond its initiation limit and ignition of the primer initiated.
- Known detonators often have a very low resistance Ignition bridge on. Such low-resistance ignition bridges are however, is difficult to control electronically.
- the same detonators are known in which the ignition bridge is one has moderate resistance.
- Such ignition bridges the latter type are better electronic controllable, due to the small geometries of the Ignition bridges, e.g. of the wire diameter, however, they are relatively difficult to manufacture.
- Another shortcoming known detonators is that the Resistance value of your ignition bridge always with large Resistance tolerances is affected. For example, the Resistance tolerance of a known detonator with a Resistance value of its ignition bridge of 15 ohms in the range of ⁇ 4 ohms, i.e. the resistance tolerance is on the order of ⁇ 20%.
- a bridge wire is used in the detonator according to the invention or a bridge layer element for the ignition bridge a miniature SMD resistor (Surface Mounted Device) replaced.
- miniature SMD resistors are on the Market readily available at low cost.
- the Resistance value is advantageously independent of the respective design of the SMD resistor in wide Freely selectable limits. Resistance values between ⁇ 1 ohm and> kOhm are in almost all sizes of such SMD resistors available. Other advantages are that the desired resistance value within the standard series (e.g.
- E24, E48 or E96 graded sufficiently fine is selectable; and that the resistance tolerance of the resistance value an SMD resistor forming the ignition bridge with values of ⁇ 1% from the standard range of SMD resistors can be chosen and that the responsiveness, i.e. the peak power for igniting the primer the detonator by selecting the design or
- the size of the SMD resistor can be freely selected within wide limits is; as well as that the ignition sensitivity within wide limits by choosing the resistance technology (about Thick film or thin film resistance) and treatment the resistance layer (with or without coating) is good can be reproducibly influenced.
- E.g. has a size 0402 SMD resistor Continuous power loss of the order of 50 to 60 mW.
- SMD resistor Continuous power loss of the order of 50 to 60 mW.
- a defined control of such an SMD resistor with a peak power in the range of some 10 W. are those for the initiation of the detonator primer required temperatures of the order of magnitude up to 400 ° C with a short delay time.
- Larger Sizes such as 0603, 0805 or 1206 have accordingly higher construction losses and therefore also require correspondingly higher peak performances around the initiation temperature at the boundary layer with the detonator's primer to reach.
- SMD resistors as the detonator's ignition bridge, it is in advantageously possible while maintaining the known mounting conditions for such SMD resistors e.g. on printed circuit boards, ceramic substrates, Transistor sockets, IC packages or the like.
- the Responsiveness by order of magnitude a decade to vary the resistance value of the Firing bridge of SMD resistance within five To be able to choose the decades as desired, and the Resistance tolerance of the SMD resistor ⁇ than 1% to be able to specify.
- Another very special advantage of using one known SMD resistor for the ignition bridge of the Detonator according to the invention consists in the possibility easily two or more than two "heating elements" per To be able to use detonator or flame igniter.
- the SMD resistors are expedient interconnected on one side. This common connection and the associated with the individual SMD resistors second connectors are from the housing of the detonator led out to create the opportunity at High reliability applications with redundant ignition to be able to apply.
- the figure shows a training in a sectional view of the detonator 10, which is made on a housing base 12 electrically insulating material contact surfaces 14 has that in thick or thin film technology are realized.
- the contact surfaces 14 are with Connection pins 16 electrically connected, which itself extend through the housing base 12.
- the contact surfaces 14 on the inside of the housing base 12 form connection contacts for SMD resistors 18.
- the SMD resistors 18 form an ignition bridge 20 for one Ignition charge 22 of the detonator 10.
- the ignition charge 22 is on the SMD resistors 18 or on the housing base 12 pressed on.
- the detonator 10 has a housing 24 which is surrounded by a Housing sleeve 26 and a cover member 28 is formed. In there is a space 30 enclosed by the housing 24 Amplifier set 32 of the detonator 10.
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Description
Die Erfindung betrifft einen elektrothermischen Detonator gemäß dem Oberbegriff des Anspruches 1 und erstreckt sich auch auf die Verwendung eines handelsüblichen SMD-Widerstandes zum Erstellen eines solchen Detonators.The invention relates to an electrothermal detonator according to the preamble of Claim 1 and also extends to the use of a commercially available SMD resistor for creating such a detonator.
Detonatoren, bei denen durch Zufuhr von elektrischer Energie eine Zündbrücke bis zur Verdampfung erhitzt wird, um den mit der Zündbrücke in Berührung stehenden Anzündsatz auf mindestens seine Initialisierungstemperatur aufzuheizen, sind vielfältig beschrieben und im Einsatz. Die klassische Bauform, auf die unten noch näher eingegangen wird, ist die eines freitragenden Widerstandsdrahtes zur Überbrückung zweier Anschlußpole für das Einspeisen des elektrischen Zündstromes.Detonators, in which an ignition bridge can be reached by supplying electrical energy Evaporation is heated to the ignition charge in contact with the ignition bridge Heating up to at least its initialization temperature are widely described and in use. The classic design, which will be discussed in more detail below, is one self-supporting resistance wire for bridging two connection poles for feeding of the electrical ignition current.
Bei der DE-A-35 37 820, die als nächstliegender Stand der Technik angesehen wird, dagegen wird vom Substrat einer integrierten Zündsteuerschaltung eine Zündbrücke in Form eines Heizelementes getragen, das aus einem Halbleiter besteht, der unterschiedliche Stromkennlinienbereiche aufweist, um infolge lawinenartigen Stromanstiegs aufgrund temperaturabhängiger Widerstandsverringerung zum zuverlässigen Durchzünden zu führen. In der US-A-4 729 315 ist ein Detonator mit einer Dünnfilmbrücke beschrieben, die auf einem Halbleitersubstrat ausgebildet ist. Auch nach US-A-5 682 008 ist ein Halbleitersubstrat als Träger für wenigstens eine Zündbrücke vorgesehen, die in diesem Falle aber in das Substrat eindiffundiert ist. Gemäß US-A 3 292 537 wird das Halbleitersubstrat für die Zündbrücke als steuerbarer elektronischer Schalter ausgelegt, um sicherzustellen, daß nur bei Vorhandensein zweier unterschiedlicher Ansteuerungskriterien der Zündstrom über die Brücke freigegeben werden kann. Alle diese Detonatoren beruhen auf Technologie der monolithisch integrierten Schaltungen mit ihren bekannten Vorteilen hinsichtlich der Massenfertigung, aber auch ihren bekannten Nachteilen hinsichtlich der Ausbeute und vor allem der Problematik in der Praxis geforderter individueller Einstellungen für die jeweilige In DE-A-35 37 820, which is regarded as the closest prior art on the other hand, the substrate of an integrated ignition control circuit an ignition bridge in the form of a heating element, which consists of a semiconductor, the has different current characteristic ranges in order to increase due to avalanche-like current due to temperature-dependent reduction in resistance for reliable ignition to lead. US-A-4 729 315 describes a detonator with a thin film bridge which is formed on a semiconductor substrate. According to US-A-5,682,008, too Semiconductor substrate provided as a carrier for at least one ignition bridge, which in this case but is diffused into the substrate. According to US Pat. No. 3,292,537, the semiconductor substrate is used for the ignition bridge designed as a controllable electronic switch to ensure that only in the presence of two different control criteria, the ignition current over the Bridge can be released. All of these detonators are based on technology monolithically integrated circuits with their known advantages in terms of Mass production, but also their known disadvantages in terms of yield and before all of the problems of individual settings required in practice for the respective
Ansprechcharakteristik und -toleranz des elektrothermischen Zündeffektes zur Anpassung an bestimmte Sicherheits- und Funktionsvorgaben.Response characteristics and tolerance of the electrothermal ignition effect for adaptation to certain safety and functional requirements.
In Anlehnung an den eingangs erwähnten klassischen Aufbau von elektrothermischen Detonatoren mit ihrem zu verdampfenden Widerstandsdraht ist aus der EP-A-0 248 977 ein Träger für einen Brückenzünder zum Initiieren von Anzündsätzen, Verzögerungssätzen und pyrotechnischen Mischungen sowie von Primärzündstoffen und -zündsätzen vorgesehen, bei dem in einen metallischen Außenring ein durchbohrter Keramikkörper eingebracht ist, der zur Aufnahme von Kontaktstiften für die Stromzuleitung dient. Die Zündbrücke zwischen diesen Kontaktstiften ist zwischen elektrisch leitenden Flächen auf dem Keramikkörper ausgebildet, welche die Bohrungen flächig umgeben. Für das Aufbringen dieser Flächen und der Zündbrücke können die Verfahren der Zerstäubungs- oder Aufdampftechnik bzw. des Siebdruckes eingesetzt werden. Based on the classic structure of electrothermal Detonators with their resistance wire to be vaporized is known from EP-A-0 248 977 Carrier for a bridge igniter for initiating ignition sets, delay sets and pyrotechnic mixtures and primary primers and primers provided at which is inserted into a metal outer ring, a pierced ceramic body, which for Includes contact pins for the power supply. The ignition bridge between them Contact pins is formed between electrically conductive surfaces on the ceramic body, which flatly surround the holes. For the application of these surfaces and the Ignition bridge can be the methods of atomization or vapor deposition or Screen printing can be used.
Ein elektrischer Brückenzünder mit einem gegenüber einem metallischen Gehäuse isoliert eingebauten Glühbrückendraht ist aus der DE 36 13 134 A1 bekannt. Um ein ungewolltes spannungsabhängiges Ansprechverhalten aufgrund von elektrostatischen Ladungsverschiebungen beiderseits parasitärer Überschlagsstrecken mit einfachen fertigungstechnischen Mitteln zu vermeiden, werden die Drahtenden des Glühbrückendrahtes einschließlich der Umgebungsbereiche ihrer Befestigungspunkte auf den Anschlußpolen des Brückenzünders mit einer Isolierschicht aus Isolierlack versehen, der nach einem Tauchvorgang vom bogenförmigen Brückendraht-Mittelbereich abläuft oder der auf die Umgebung der Befestigungspunkte abgetropft wird.An electric bridge igniter with one versus one metallic housing insulates built-in glow bridge wire is known from DE 36 13 134 A1. An unwanted one voltage dependent response due to electrostatic charge shifts on both sides parasitic arcing lines with simple to avoid manufacturing technical means Wire ends of the glow plug wire including the Surrounding areas of their attachment points on the Terminal poles of the bridge igniter with an insulating layer made of insulating varnish, which after a dive from arcuate bridge wire center area expires or the is dripped onto the area surrounding the attachment points.
Die DE 42 36 729 A1 beschreibt eine Zünd- bzw. Anzündpille mit einem isolierenden Polkörper mit elektrisch leitenden Längsstreifen, mit einer auf dem Polkörper angeordneten Glühbrücke und mit Anschlußdrähten, wobei die Glühbrücke und die Anschlußdrähte jeweils mit den Längsstreifen über Lötstellen verbunden sind, und mit mindestens einem Zündstoff und einem äußeren Überzugslack, der den Zündstoff bedeckt.DE 42 36 729 A1 describes a squib with an insulating pole body with electrically conductive Longitudinal stripes, with one arranged on the polar body Glow plug and with connecting wires, the glow plug and the connecting wires each with the longitudinal strips over Solder points are connected, and with at least one Detonator and an outer top coat that matches the detonator covered.
Alle diese Detonatoren funktionieren nach dem elektrothermischen Prinzip. D.h. daß durch Zufuhr von elektrischer Energie die Zündbrücke des Detonators üblicherweise bis zur Verdampfung stark erhitzt wird. Dabei wird der mit der Zündbrücke in Berührung befindliche Anzündsatz über seine Initiierungsgrenze hinaus erwärmt und die Zündung des Anzündsatzes eingeleitet.All of these detonators work after that electrothermal principle. I.e. that by feeding electrical energy the detonator's ignition bridge is usually strongly heated until evaporation. there becomes the one in contact with the ignition bridge Ignition charge warms up beyond its initiation limit and ignition of the primer initiated.
Bekannte Detonatoren weisen oftmals eine sehr niederohmige Zündbrücke auf. Derartige niederohmige Zündbrücken sind jedoch nur schwer elektronisch ansteuerbar. Desgleichen sind Detonatoren bekannt, bei welchen die Zündbrücke einen moderaten Widerstandswert besitzt. Solche Zündbrücken der zuletzt genannten Art sind zwar besser elektronisch ansteuerbar, aufgrund der kleinen Geometrien der Zündbrücken, z.B. des Drahtdurchmessers, sind sie jedoch nur relativ schwer herstellbar. Ein weiterer Mangel bekannter Detonatoren besteht darin, daß der Widerstandswert ihrer Zündbrücke stets mit großen Widerstandstoleranzen behaftet ist. So beträgt bspw. die Widerstandstoleranz eines bekannten Detonators mit einem Widerstandswert seiner Zündbrücke von 15 Ohm im Bereich von ± 4 Ohm, d.h. die Widerstandstoleranz beträgt größenordnungsmäßig ± 20 %.Known detonators often have a very low resistance Ignition bridge on. Such low-resistance ignition bridges are however, is difficult to control electronically. The same detonators are known in which the ignition bridge is one has moderate resistance. Such ignition bridges the latter type are better electronic controllable, due to the small geometries of the Ignition bridges, e.g. of the wire diameter, however, they are relatively difficult to manufacture. Another shortcoming known detonators is that the Resistance value of your ignition bridge always with large Resistance tolerances is affected. For example, the Resistance tolerance of a known detonator with a Resistance value of its ignition bridge of 15 ohms in the range of ± 4 ohms, i.e. the resistance tolerance is on the order of ± 20%.
In Kenntnis dieser Gegebenheiten liegt der vorliegenden Erfindung die Aufgabe zugrunde, einen Detonator der eingangs genannten Art zu schaffen, der vergleichsweise kostengünstig mit besser definierten Parametern realisierbar ist, wobei der Brückenwiderstand der Zündbrücke jeden gewünschten Wert innerhalb enger Widerstandstoleranzen aufweisen kann.The present is known in the knowledge of these facts Invention, the object of a detonator to create the type mentioned above, the comparative inexpensive with better defined parameters is feasible, the bridge resistance of the Ignition bridge any desired value within narrower Resistance tolerances can have.
Diese Aufgabe wird bei einem Detonator der eingangs genannten Art erfindungsgemäß durch die Merkmale des Kennzeichenteiles des Anspruchs 1 gelöst. Bevorzugte Ausbzw. Weiterbildungen des erfindungsgemäßen Detonators sind in den Unteransprüchen gekennzeichnet.This task is the beginning of a detonator mentioned type according to the invention by the features of Characteristic part of claim 1 solved. Preferred training Further developments of the detonator according to the invention are characterized in the subclaims.
Bei dem erfindungsgemäßen Detonator werden ein Brückendraht oder ein Brücken-Schichtelement für die Zündbrücke durch einen Miniatur-SMD-Widerstand (Surface Mounted Device) ersetzt. Derartige Miniatur-SMD-Widerstände sind auf dem Markt ohne weiteres preisgünstig erhältlich. Der Widerstandswert ist in vorteilhafter Weise unabhängig von der jeweiligen Bauform des SMD-Widerstandes in weiten Grenzen frei wählbar. Widerstandswerte zwischen < 1 Ohm und > kOhm sind in nahezu allen Baugrößen solcher SMD-Widerstände erhältlich. Weitere Vorteile bestehen darin, daß der jeweils gewünschte Widerstandswert innerhalb der Normreihen (z.B. E24, E48 oder E96)ausreichend fein abgestuft auswählbar ist; und daß die Widerstandstoleranz des Widerstandswertes eines die Zündbrücke bildenden SMD-Widerstandes mit Werten von < 1 % aus dem Standardprogramm der SMD-Widerstände gewählt werden kann, und daß die Ansprechempfindlichkeit, d.h. die Spitzenleistung zum Zünden des Anzündsatzes des Detonators durch Auswahl der Bauform bzw. Baugröße des SMD-Widerstandes in weiten Grenzen frei wählbar ist; sowie daß die Zündempfindlichkeit in weiten Grenzen durch die Auswahl der Widerstands-Technologie (etwa Dickschicht- oder Dünnfilm-Widerstand) sowie durch die Behandlung der Widerstandschicht (mit oder ohne Coating) gut reproduzierbar beeinflußt werden kann.A bridge wire is used in the detonator according to the invention or a bridge layer element for the ignition bridge a miniature SMD resistor (Surface Mounted Device) replaced. Such miniature SMD resistors are on the Market readily available at low cost. The Resistance value is advantageously independent of the respective design of the SMD resistor in wide Freely selectable limits. Resistance values between <1 ohm and> kOhm are in almost all sizes of such SMD resistors available. Other advantages are that the desired resistance value within the standard series (e.g. E24, E48 or E96) graded sufficiently fine is selectable; and that the resistance tolerance of the resistance value an SMD resistor forming the ignition bridge with values of <1% from the standard range of SMD resistors can be chosen and that the responsiveness, i.e. the peak power for igniting the primer the detonator by selecting the design or The size of the SMD resistor can be freely selected within wide limits is; as well as that the ignition sensitivity within wide limits by choosing the resistance technology (about Thick film or thin film resistance) and treatment the resistance layer (with or without coating) is good can be reproducibly influenced.
Bspw. besitzt ein SMD-Widerstand der Baugröße 0402 eine Dauerverlustleistung von größenordnungsmäßig 50 bis 60 mW. Durch eine definierte Ansteuerung eines solchen SMD-Widerstandes mit einer Spitzenleistung im Bereich einiger 10 W sind die für die Initiierung des Anzündsatzes des Detonators erforderlichen Temperaturen von größenordnungsmäßig bis 400°C mit kurzer Verzögerungszeit erreichbar. Größere Baugrößen wie bspw. 0603, 0805 oder 1206 besitzen entsprechend höhere Bauverlustleistungen und erfordern daher auch entsprechend höhere Spitzenleistungen, um die Initiierungstemperatur an der Grenzschicht zum Anzündsatz des Detonators zu erreichen.E.g. has a size 0402 SMD resistor Continuous power loss of the order of 50 to 60 mW. By a defined control of such an SMD resistor with a peak power in the range of some 10 W. are those for the initiation of the detonator primer required temperatures of the order of magnitude up to 400 ° C with a short delay time. Larger Sizes such as 0603, 0805 or 1206 have accordingly higher construction losses and therefore also require correspondingly higher peak performances around the initiation temperature at the boundary layer with the detonator's primer to reach.
Durch die erfindungsgemäße Anwendung an sich bekannter SMD-Widerstände als Zündbrücke des Detonators ist es in vorteilhafter Weise möglich, unter Beibehaltung der an bekannten Montagebedingungen für solche SMD-Widerstände bspw. auf Leiterplatten, Keramiksubstraten, Transistorsockeln, IC-Gehäusen o.dgl. die Ansprechempfindlichkeit wunschgemäß um größenordungsmäßig eine Dekade zu variieren, den Widerstandswert des die Zündbrücke bildenden SMD-Widerstandes innerhalb von fünf Dekaden wunschgemäß frei wählen zu können, und die Widerstandstoleranz des SMD-Widerstandes < als 1% spezifizieren zu können. In weiterer vorteilhafter Weise ist es möglich, den die Zündbrücke des Detonators bildenden SMD-Widerstand auf Standard-SMD-Bestückungsmaschinen bestücken und mit Standardverfahren der SMD-Technik auf dem Gehäuseboden des Detonators elektrisch leitend fixieren zu können. Diese Fixierung erfolgt zweckmäßigerweise durch Löten, bei dem es sich um ein Reflow-Löten, um ein Vaporphase-Löten o.dgl. handeln kann. Aufgrund dieser an sich bekannten Technologie sind die Herstellungskosten zur Realisierung der Zündbrücke des erfindungsgemäßen Detonators vergleichsweise klein.Known per se by the application according to the invention SMD resistors as the detonator's ignition bridge, it is in advantageously possible while maintaining the known mounting conditions for such SMD resistors e.g. on printed circuit boards, ceramic substrates, Transistor sockets, IC packages or the like. the Responsiveness by order of magnitude a decade to vary the resistance value of the Firing bridge of SMD resistance within five To be able to choose the decades as desired, and the Resistance tolerance of the SMD resistor <than 1% to be able to specify. In a further advantageous way it is possible to build the detonator's ignition bridge SMD resistance on standard SMD assembly machines equip and with standard methods of SMD technology on the Fix the bottom of the detonator in an electrically conductive manner can. This fixation is advantageously carried out by Soldering, which is a reflow soldering, is a Vapor phase soldering or the like can act. Because of this known technology is the manufacturing cost Realization of the ignition bridge of the invention Detonators comparatively small.
Ein weiterer, ganz besonderer Vorteil der Anwendung eines an sich bekannten SMD-Widerstandes für die Zündbrücke des erfindungsgemäßen Detonators besteht in der Möglichkeit, problemlos zwei oder mehr als zwei "Heizelemente" pro Detonator bzw. Flammzündmittel einsetzen zu können. Kommen mehrere solcher SMD-Widerstände als "Heizelemente" zur Anwendung, so werden die SMD-Widerstände zweckmäßigerweise einseitig zusammengeschaltet. Dieser gemeinsame Anschluß und die zu den einzelnen SMD-Widerständen zugehörigen zweiten Anschlüsse werden aus dem Gehäuse des Detonators herausgeführt, um die Möglichkeit zu schaffen, bei Hochzuverlässigkeitsanwendungen eine redundante Zündung anwenden zu können. Another very special advantage of using one known SMD resistor for the ignition bridge of the Detonator according to the invention consists in the possibility easily two or more than two "heating elements" per To be able to use detonator or flame igniter. Come several such SMD resistors as "heating elements" for Application, the SMD resistors are expedient interconnected on one side. This common connection and the associated with the individual SMD resistors second connectors are from the housing of the detonator led out to create the opportunity at High reliability applications with redundant ignition to be able to apply.
Weitere Einzelheiten, Merkmale und Vorteile ergeben sich aus der nachfolgenden Beschreibung eines in der Zeichnung schematisch dargestellten Ausführungsbeispieles des erfindungsgemäßen Detonators.Further details, features and advantages emerge from the description below one in the drawing schematically illustrated embodiment of the detonator according to the invention.
Die Figur zeigt in einer Schnittdarstellung eine Ausbildung
des Detonators 10, der an einem Gehäuseboden 12 aus
elektrisch isolierendem Material Kontaktflächen 14
aufweist, die in Dick- oder Dünnschichttechnologie
realisiert sind. Die Kontaktflächen 14 sind mit
Anschlußpins 16 elektrisch leitend verbunden, die sich
durch den Gehäuseboden 12 erstrecken.The figure shows a training in a sectional view
of the
Die Kontaktflächen 14 auf der Innenseite des Gehäusebodens
12 bilden Anschlußkontakte für SMD-Widerstände 18. Die SMD-Widerstände
18 bilden eine Zündbrücke 20 für einen
Anzündsatz 22 des Detonators 10. Der Anzündsatz 22 ist auf
die SMD-Widerstände 18 bzw. auf den Gehäuseboden 12
aufgepreßt.The
Der Detonator 10 weist ein Gehäuse 24 auf, das von einer
Gehäusehülse 26 und einem Deckelelement 28 gebildet ist. In
dem vom Gehäuse 24 umschlossenen Raum 30 befindet sich ein
Verstärkersatz 32 des Detonators 10. The
- 1010th
- DetonatorDetonator
- 1212th
- GehäusebodenCase back
- 1414
- KontaktflächeContact area
- 1616
- AnschlußpinConnector pin
- 1818th
- SMD-WiderstandSMD resistor
- 2020th
- ZündbrückeIgnition bridge
- 2222
- AnzündsatzIgnition charge
- 2424th
- Gehäusecasing
- 2626
- GehäusehülseHousing sleeve
- 2828
- DeckelelementCover element
- 3030th
- Gehäuse-InnenraumHousing interior
- 3232
- VerstärkersatzAmplifier set
Claims (5)
- Electrothermal detonator (10) having an electric resistor forming an ignition bridge (20) for an igniter composition (22), said resistor being fixed in an electrically conductive manner to a base (12) for a detonator housing (24) with connection contacts (14), characterized in that the resistor is a commercially available SMD resistor (18).
- Detonator according to Claim 1,
characterized in that
the igniter composition (22) is pressed on to at least one SMD resistor (18) fixed on to the base (12) of the housing. - Detonator according to Claim 2,
characterized in that
the igniter composition (22) is combined with a booster composition (32). - Detonator according to one of Claims 1 to 3,
characterized in that
at least two SMD resistors (18) are unilaterally interconnected, the shared connection (16) and the individual connections (16) belonging to the SMD resistors being in contact with the corresponding connection contacts (14) of the base (12) of the housing. - Use of a commercially available SMD resistor (18) as an ignition bridge (20) for an electrothermal detonator (10) for the initiation of an igniter composition (22).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19802432 | 1998-01-23 | ||
| DE19802432A DE19802432A1 (en) | 1998-01-23 | 1998-01-23 | Detonator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0932015A1 EP0932015A1 (en) | 1999-07-28 |
| EP0932015B1 true EP0932015B1 (en) | 2001-08-16 |
Family
ID=7855407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99100536A Expired - Lifetime EP0932015B1 (en) | 1998-01-23 | 1999-01-13 | Detonator |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0932015B1 (en) |
| DE (2) | DE19802432A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10308443A1 (en) * | 2003-02-27 | 2004-09-09 | Dynltec Gmbh | Electric detonator |
| DE102004004668A1 (en) * | 2004-01-30 | 2005-08-25 | Dynitec Gmbh | Bridge igniter for explosives, has bridge connections, conductors and bridges mounted on ribbed insulation board |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL270122A (en) * | 1961-10-05 | |||
| US3292537A (en) * | 1965-06-15 | 1966-12-20 | Jr Frank A Goss | Multi-signal explosive detonator |
| US3695178A (en) * | 1970-11-09 | 1972-10-03 | Robert E Betts | Delta squib circuit |
| US3906858A (en) * | 1974-07-30 | 1975-09-23 | Us Eneregy Research And Dev Ad | Miniature igniter |
| DE2747163A1 (en) * | 1977-10-20 | 1979-04-26 | Dynamit Nobel Ag | ELECTRICAL ELEMENT |
| DE3537820A1 (en) * | 1985-10-24 | 1987-04-30 | Dynamit Nobel Ag | Electronic fuze |
| DE3606364A1 (en) | 1986-02-27 | 1987-09-03 | Dynamit Nobel Ag | 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 |
| DE3613134A1 (en) | 1986-04-18 | 1987-10-22 | Diehl Gmbh & Co | Electrical bridge wire detonator |
| US4729315A (en) * | 1986-12-17 | 1988-03-08 | Quantic Industries, Inc. | Thin film bridge initiator and method therefor |
| JPH0792358B2 (en) * | 1987-09-14 | 1995-10-09 | 日本工機株式会社 | Igniter for electric ignition device |
| US4831933A (en) * | 1988-04-18 | 1989-05-23 | Honeywell Inc. | Integrated silicon bridge detonator |
| DE4236729A1 (en) | 1992-10-30 | 1994-05-05 | Dynamit Nobel Ag | Primer or firing pill |
| IL109841A0 (en) * | 1994-05-31 | 1995-03-15 | Israel State | Monolithic semiconductor igniter for explosives and pyrotechnic mixtures and process for its manufacture |
| FR2732455B1 (en) * | 1995-03-31 | 1997-06-13 | Davey Bickford | ELECTROPYROTECHNICAL INITIATOR, PROCESS FOR REALIZING SUCH AN INITIATOR AND SAFETY SYSTEM FOR VEHICLE |
-
1998
- 1998-01-23 DE DE19802432A patent/DE19802432A1/en not_active Withdrawn
-
1999
- 1999-01-13 DE DE59900192T patent/DE59900192D1/en not_active Expired - Fee Related
- 1999-01-13 EP EP99100536A patent/EP0932015B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE59900192D1 (en) | 2001-09-20 |
| EP0932015A1 (en) | 1999-07-28 |
| DE19802432A1 (en) | 1999-08-26 |
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