EP0156763B1 - Method and device for increasing the energy in an electromagnetic fuze system - Google Patents

Method and device for increasing the energy in an electromagnetic fuze system Download PDF

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Publication number
EP0156763B1
EP0156763B1 EP85810045A EP85810045A EP0156763B1 EP 0156763 B1 EP0156763 B1 EP 0156763B1 EP 85810045 A EP85810045 A EP 85810045A EP 85810045 A EP85810045 A EP 85810045A EP 0156763 B1 EP0156763 B1 EP 0156763B1
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EP
European Patent Office
Prior art keywords
generator
detonating
facing
end position
acceleration
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EP85810045A
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German (de)
French (fr)
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EP0156763A1 (en
Inventor
Robert Rehmann
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Uhde Inventa Fischer AG
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EMS Inventa AG
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Priority to AT85810045T priority Critical patent/ATE36601T1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C11/00—Electric fuzes
    • F42C11/04—Electric fuzes with current induction

Definitions

  • the invention relates to a method for increasing the energy in an electromagnetic ignition system of relatively low-accelerated ammunition bodies, wherein a coil with a coaxially movable magnetic core is arranged in an ignition generator for which a rear-side impact body is provided in a lower housing of the ignition system. and wherein the reaction acceleration moves a reaction part that is mechanically secured in its rest position relative to its stator, and the resulting electrical energy induced in the coil is stored in a capacitor and made available to ignite an electrical squib, and a device for carrying out the method .
  • Projectile ignition systems which contain a generator and move a reaction part during acceleration through a coil reinforced with an iron core in order to provide the required ignition energy via a capacitor.
  • An arrangement is known (CH-A-356 045) in which a permanent magnet is movably mounted within a coil which is surrounded by a magnet. The magnet is fixed in the rest position by means of a contact pin in the recess of an insulator. When the projectile is fired, the pin is released due to the acceleration, the magnetic field of the magnet moves through the coil and charges a capacitor, which stores the ignition energy until it strikes.
  • DE-A-1 936 878 contains an electromagnetic ignition system, but the coil with the magnetic core is fastened in the rest position of the ammunition in the rear position, so that the acceleration of the ignition generator corresponds to the acceleration of the ammunition body.
  • the ignition generator is fixed in the housing so that in the event of vibrations or improper manipulation, the movable permanent magnet can break through the locking plate and thus induce the voltage in the coil.
  • DE-B-1 140 843 also describes and shows a projectile detonator with an inertia generator.
  • the position of the generator is secured with a plate on which a screw is supported. When accelerating, the screw penetrates the plate and the ignition generator hits the hollow pin.
  • the magnetic core is set in motion, which was previously held at rest with a wire.
  • the ignition generator moves only a very short distance up to the impact, which is given by the length of the screw mentioned above. It is more likely to be braked due to the energy used to break through and the friction of the screw. There is no spring-loaded mounting of the ignition generator, which should prevent damage during manipulation.
  • US-A-3 207 075 shows a rotor arrangement which is arranged in the pyrotechnic chain of the ignition system.
  • the object of the invention is to provide a method which provides a sufficiently high ignition energy at low acceleration of an ammunition body.
  • Another object is to provide an ignition device which ensures a high degree of safety both when manipulating and when firing the ammunition body.
  • the above-mentioned object is achieved in that the ignition generator is held resiliently in the first, target-side end position, at the time of firing by a spring force and is secured against vibrations and damage to the ignition system, and is located in the upper target-side housing at a distance of the acceleration distance from the rear-side impact -Body is located, the acceleration path is dimensioned so that the acceleration energy of the magnetic body induces more energy in the coil when it hits it, than is necessary for the functioning of the ignition system, that after the onset of the launch acceleration, the ignition generator due to its persistent forces coaxially into a second , rear end position is moved so that its acceleration increases during the path between the first, target-side and the second, rear-side end position and that the rear-side reaction part of the magnetic core on the verse with a central bore
  • the impact body opens that a mechanical safety device for the reaction part is unlocked here and this magnetic core is accelerated with respect to the coil, whereby electrical energy is generated in the coil, and that the ignition generator is returned to its first end
  • the advantage of the invention is that after the launch acceleration has started, it is necessary to ignite the electrical detonator Such energy is generated directly when the shot is fired, specifically by the ignition generator itself. This is accelerated over a predetermined start-up distance over a certain period of time and hurled onto an impact body (anvil) provided with a bore. When it hits the anvil, the magnetic core moves and the ignition generator generates a voltage surge, thus charging the capacitor in the ignition generator itself. At the end of the acceleration phase, the ignition generator is pushed back into the starting position by spring force and, in conjunction with other safety devices, releases its energy at the right time for ignition.
  • the spring which in the rest position holds the ignition generator in the first, target-oriented end position, simultaneously functions as an attenuator and dampens possible vibrations in the event of incorrect manipulation or in the event of a projectile falling, so that this resilient mounting not only protects the ignition generator from damage to the Ignition system protects, but also increases the functional safety of this part significantly.
  • the ignition generator is moved together with the mechanically and / or electrically secured ignition system in the housing by inertial forces and in the opposite direction by the force of the compression spring, and that the ignition generator and the ignition system are moved together between the target-side first end position and the rear end position are moved.
  • the compression spring is adapted in accordance with the increased movable mass. Increasing the moving mass also increases the acceleration energy on impact.
  • the ignition generator is guided axially in a time interval in a bore and in its end positions, limited over a predetermined distance.
  • the distance is dimensioned so that a sufficiently high induced voltage is obtained when the coil hits.
  • the ignition generator is advantageously held in a target-oriented, first end position by a spring force and the corresponding compression spring is selected such that a launch acceleration of 100 to 300 g. S - 2 while the ignition generator is brought into its second, rear-side end position for at least 3 ms.
  • the device according to claim 5 is that the ignition generator is mounted in a housing by a compression spring in the bore in a first end position, has a contact pin which is telescopically movable in a contact sleeve and with the rotor located in a housing which carries a squib and which can be turned from a safety position into a reinforced position, is electrically connected in this first end position.
  • This device is particularly inexpensive in terms of safety. It prevents premature electrical preparation of the projectile for the explosion, since the electrical connection to the squib carrier is interrupted by «lifting off the contact pin even at low launch acceleration.
  • an advantageous development according to claim 6 is that the acceleration distance of the ignition generator with respect to the housing of the ignition system is greater than the acceleration distance of the magnetic core with respect to the coil.
  • the increasing acceleration is exploited over a longer distance, which then causes an increase in the induced voltage when the coil hits by a faster movement of the magnetic core.
  • the ignition generator is arranged to be movable in the longitudinal direction in a threaded lower housing and the secured ignition system is fixedly mounted in an upper housing.
  • This variant therefore only calculates the acceleration of the actual ignition generator, with sufficient electrical energy being induced for the ignition system in this case too.
  • the ignition generator is fastened together with the secured ignition system in insulating sleeves and the insulating sleeves are slidably mounted in a housing in the longitudinal direction.
  • This variant means a simplification of the design and the moveable mass that is to trigger the ignition is greater with the technically necessary components.
  • At least two peripheral recesses are provided in the cylindrical bore of the lower housing. They serve to reduce the friction of the ignition generator on the housing wall during its acceleration and prevent jamming in the bore. The air in the borehole can be displaced without difficulty.
  • the recesses are made symmetrically.
  • four symmetrically arranged recesses have proven successful.
  • the ignition generator can slide largely frictionlessly on the remaining surfaces of the bore.
  • an impact body is contained in a compression body in the lower part of the lower housing.
  • the impact body serves as an anvil.
  • the impact body has a central bore.
  • This central hole allows a reaction part that is movable with the magnetic core to penetrate upon impact. It has an expediently conical opening, which allows a safe penetration even with greater tolerance of the axial guidance of the reaction part.
  • an ignition system is designated by 1.
  • An upper housing 2 is provided with at least one fastening part 2 'and is screwably connected to a lower housing 3 of smaller diameter.
  • the upper housing 2 of the ignition system 1 carries a threaded ring 4 and a cylindrical pin 5.
  • a rotor 7 is installed in a security element 8 in an insulating sleeve 6.
  • the rotor 7 has a bore 7 'and contains a known electrical squib 9, which is provided with a pole pin 9'. In the secured state, this is across the ignition chain. Two locks, not shown, prevent the rotor 7 from rotating prematurely and closing the ignition chain.
  • a threaded bore 10 is provided for receiving a detonator (booster).
  • a further bore 11 is provided in the security element 8, which serves to center a telescopic contact pin 12, which is attached in a contact sleeve 13 of an ignition generator 14.
  • a conductive contact surface 15 is provided between the ignition generator 14 and the insulating sleeve 6.
  • a reaction part 16, which forms the lower pole piece, is indicated in the elevation of the ignition generator 14.
  • a disc 17 is held by means of a compression spring 18.
  • the compression spring 18 is fixed with a holder 17 'and also has the function of an attenuator, so that any vibrations or an impact when the ammunition body falls cannot cause damage to the ignition system.
  • the compression spring 18 is wedged in a recess 19 between a compression body 20 and the cylinder wall of the lower housing 3.
  • the upsetting body 20, which has an empty space 20 ′, is made of lead and is used to fasten an impact body 21 (anvil) in which a wedge-shaped central bore 22 is formed.
  • FIG. 2 shows a top view of the bore 23 of the lower housing 3.
  • the outer edge is formed by a thread 24.
  • peripheral recesses 3 ' In the inner surface of the bore 23 there are peripheral recesses 3 '. 2 shows four such peripheral recesses 3 '.
  • the ignition generator 14 has in its upper part a dielectric 25, for example made of hardened araldite (brand from Ciba Geigy AG), in which a capacitor 26 and a diode 27 are embedded.
  • a dielectric 25 for example made of hardened araldite (brand from Ciba Geigy AG)
  • a capacitor 26 and a diode 27 are embedded.
  • a coil 28 which encloses a magnetic core 29 between the reaction part 16 as the lower pole piece and a part 30 as the upper pole piece.
  • the upper part and the lower part are separated from one another by a disk 31.
  • the ignition generator 14 is surrounded by a housing 32, from which the contact pin 12 protrudes.
  • FIG. 4 shows the characteristic course of an acceleration curve of an ammunition body.
  • the course of the acceleration b as a function of the time t is shown.
  • the ammunition body with the ignition system according to the invention is at rest in a first position t o .
  • the ignition generator 14 moves into a second end position t ", the tip of the reaction part 16 striking the central bore 22 in the rear lower housing part 3.
  • the ignition generator 14 slides on the edges of the recesses 3 as it accelerates The air cannot be compressed since it can escape quickly enough through the channels formed by the recesses 3.
  • the ignition generator 14 is moved into its first end position by means of the compression spring 18 returned, which it reaches at time t 2.
  • the acceleration b is constant, at time t 4 the igniter is armored and the ignition takes place at time t 5. The ignition occurs when it hits the target, the double hood of an ammunition body pressed in and the ignition circuit is closed.
  • FIG. 5 and 6 show the second copy, for example. 5, the device is in the secured state
  • FIG. 6 shows the state of the device when fired.
  • a one-piece housing 33 is provided with a cover 34. This cover 34 has an opening 35.
  • the security element 8 is provided with an insulating washer 36 which has an opening 37.
  • a disk 39 is arranged under the ignition generator 14 and is provided with an opening 40. This disc 39 serves as an upper support for the compression spring 18 and corresponds to the disc 17 from FIG. 1.
  • the upper end of the compression spring 18 is secured by an annular holder 41.
  • the squib 9 arranged in the rotor 7 is mounted with the pole pin 9 '.
  • the pole pin 9 ' is located in the bore 7' in the rotor 7.
  • a locking pin 42 engages in the area of the rotor.
  • the security element 8 is provided on the lower side with an insulating washer 43.
  • the one-piece housing 33 has a fastening flange 44.
  • the ignition generator 14 is located in a lower insulating sleeve 45 which is fixedly connected to the upper insulating sleeve 6, so that the safety element 8 and the ignition generator 14 form a unit (FIGS. 5, 6).
  • the second example also contains an impact body 21 which is mounted in an upsetting body 20.
  • the electrical ignition system according to the invention is specially designed for low accelerations, as they also occur with rocket-powered ammunition.
  • the capacitor 26 of the ignition generator 14 discharges in about 10 minutes; the result is an energy-free dud.
  • the solution according to the invention enables the creation of autonomous ignition systems which are functional independently of secondary supplies (batteries, etc.).
  • the electrical energy provided is sufficient to supply electrical safety devices, timers (• timers •) and proximity sensors with energy in addition to the safe ignition of so-called thin-film pills.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • General Induction Heating (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Generation Of Surge Voltage And Current (AREA)

Abstract

In the method of increasing the detonation energy in an electromagnetic fuze system of a low-acceleration projectile a detonator generator which is held in an inactive or rest position by an elastic force, is accelerated along a predetermined travel path in the rear portion of a housing at the onset of the firing acceleration. The detonator generator is accelerated such that the detonator generator impacts upon an impact body which is provided with a central bore. As a result, a reaction member of the detonator generator inactivates its mechanical safety device and is accelerated, thus providing the detonation energy. In the retarding phase the detonator generator is returned into its original position by means of the elastic force and thus is ready for detonation. In comparison to known methods and apparatus there can thus be dispensed with an external power supply, whereby safety is increased with respect to maintenance, tests and firing.

Description

Die Erfindung betrifft ein Verfahren zur Erhöhung der Energie in einem elektromagnetischen Zündsystem von relativ niedrig beschleunigten Munitionskörpern, wobei in einem Zündgenerator, für den in einem unterem Gehäuse des Zündsystems ein heckseitiger Aufschlag-Körper vorgesehen ist, eine Spule mit einem koaxial beweglichen Magnetkern angeordnet ist, und wobei durch den Einfluss der Abschussbeschleunigung ein in seiner Ruhestellung mechanisch gesicherter Reaktionsteil gegenüber seinem Stator bewegt wird, und die daraus resultierende, in der Spule induzierte elektrische Energie in einem Kondensator gespeichert und zur Zündung einer elektrischen Zündpille bereitgestellt wird sowie eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a method for increasing the energy in an electromagnetic ignition system of relatively low-accelerated ammunition bodies, wherein a coil with a coaxially movable magnetic core is arranged in an ignition generator for which a rear-side impact body is provided in a lower housing of the ignition system. and wherein the reaction acceleration moves a reaction part that is mechanically secured in its rest position relative to its stator, and the resulting electrical energy induced in the coil is stored in a capacitor and made available to ignite an electrical squib, and a device for carrying out the method .

Es sind bereits Zündsysteme für Projektile bekannt, die einen Generator enthalten und während der Beschleunigung einen Reaktionsteil durch eine mit einem Eisenkern verstärkte Spule bewegen, um die erforderliche Zündenergie über einen Kondensator bereit zu stellen. Es ist eine Anordnung bekannt (CH-A- 356 045), bei welcher innerhalb einer Spule, die von einem Magnet umgeben ist, ein Permanentmagnet bewegbar angebracht ist. Der Magnet ist in Ruhestellung mittels eines Kontaktstiftes in der Ausnehmung eines Isolators befestigt. Beim Abschuss des Projektils wird durch die Beschleunigung der Stift freigegeben, das Magnetfeld des Magnets bewegt sich durch die Spule und lädt einen Kondensator auf, der die Zündenergie bis zum Aufschlag speichert.Projectile ignition systems are already known which contain a generator and move a reaction part during acceleration through a coil reinforced with an iron core in order to provide the required ignition energy via a capacitor. An arrangement is known (CH-A-356 045) in which a permanent magnet is movably mounted within a coil which is surrounded by a magnet. The magnet is fixed in the rest position by means of a contact pin in the recess of an insulator. When the projectile is fired, the pin is released due to the acceleration, the magnetic field of the magnet moves through the coil and charges a capacitor, which stores the ignition energy until it strikes.

Solche Systeme arbeiten zufriedenstellend bei hohen Abschussbeschleunigungen, um eine Entriegelung zu ermöglichen, versagen jedoch bei relativ geringen Beschleunigungen.Such systems work satisfactorily at high launch accelerations to enable unlocking, but fail at relatively low accelerations.

In der DE-A-1 936 878 ist ein elektromagnetisches Zündsystem enthalten, wobei jedoch die Spule mit dem Magnetkern in der Ruhestellung der Munition in der heckseitigen Lage befestigt ist, so dass die Beschleunigung des Zündgenerators der Beschleunigung des Munitionskörpers entspricht. Der Zündgenerator ist im Gehäuse fest angeordnet, so dass bei Vibrationen oder bei einer unsachgemässen Manipulation der bewegliche permanente Magnet die Arretierplatte durchbrechen und somit in der Spule die Spannung induzieren kann. Es ist da zwar eine weitere Sicherung vorhanden, aber schon die Entsicherung des beweglichen Magnetkerns ist als unerwünscht und den Vorschriften widersprechend zu betrachten.DE-A-1 936 878 contains an electromagnetic ignition system, but the coil with the magnetic core is fastened in the rest position of the ammunition in the rear position, so that the acceleration of the ignition generator corresponds to the acceleration of the ammunition body. The ignition generator is fixed in the housing so that in the event of vibrations or improper manipulation, the movable permanent magnet can break through the locking plate and thus induce the voltage in the coil. There is an additional fuse, but the unlocking of the movable magnetic core is undesirable and must be considered contrary to the regulations.

In der DE-B-1 140 843 ist gleichfalls ein Geschosszünder mit einem Trägheitsgenerator beschrieben und dargestellt. Die Lage des Generators ist mit einer Platte gesichert, auf die sich eine Schraube abstützt. Bei der Beschleunigung durchdringt die Schraube die genannte Platte und der Zündgenerator schlägt auf den Hohlzapfen auf. Beim Aufprall wird der Magnetkern in Bewegung gebracht, der vorher mit einem Draht in Ruhestellung gehalten wurde. Der Zündgenerator bewegt sich bis zum Aufprall nur über eine sehr kurze Strecke, die durch die Länge der obengenannten Schraube gegeben ist. Dabei wird er eher infolge der zum Durchbruch verbrauchten Energie und der Reibung der Schraube gebremst. Eine abgefederte Lagerung des Zündgenerators, die eine Beschädigung bei der Manipulation verhindern sollte, ist nicht vorhanden.DE-B-1 140 843 also describes and shows a projectile detonator with an inertia generator. The position of the generator is secured with a plate on which a screw is supported. When accelerating, the screw penetrates the plate and the ignition generator hits the hollow pin. In the event of an impact, the magnetic core is set in motion, which was previously held at rest with a wire. The ignition generator moves only a very short distance up to the impact, which is given by the length of the screw mentioned above. It is more likely to be braked due to the energy used to break through and the friction of the screw. There is no spring-loaded mounting of the ignition generator, which should prevent damage during manipulation.

In der US-A-3 207 075 ist eine Rotoranordnung gezeigt, die in der pyrotechnischen Kette des Zündsystems angeordnet ist. Vor dem Prioritätstag der Patentanmeldung waren verschiedene Lösungen von Zündsystemen mit Rotoranordnungen bekannt. In diesem Fall ist jedoch ein an sich bekanntes Merkmal in einer erfinderischen Kombination verwendet.US-A-3 207 075 shows a rotor arrangement which is arranged in the pyrotechnic chain of the ignition system. Before the priority date of the patent application, various solutions of ignition systems with rotor arrangements were known. In this case, however, a feature known per se is used in an inventive combination.

Aufgabe der Erfindung ist es, ein Verfahren zu schaffen, welches bei niedriger Beschleunigung eines Munitionskörpers eine ausreichend hohe Zündenergie zur Verfügung stellt.The object of the invention is to provide a method which provides a sufficiently high ignition energy at low acceleration of an ammunition body.

Eine weitere Aufgabe ist es, eine Zündvorrichtung zu schaffen, welche einen hohen Grad an Sicherheit sowohl bei der Manipulation als auch beim Abschuss des Munitionskörpers gewährleistet.Another object is to provide an ignition device which ensures a high degree of safety both when manipulating and when firing the ammunition body.

Die vorgenannte Aufgabe wird erfindungsgemäss dadurch gelöst, dass der Zündgenerator in der ersten, zielseitigen Endstellung, im Zeitpunkt des Abschusses durch eine Federkraft federnd gehalten und gegen Vibrationen und Beschädigung des Zündsystems gesichert wird und sich im oberen zielseitigen Gehäuse in einer Entfernung der Beschleunigungsstrecke vom heckseitigen Aufschlag-Körper befindet, wobei die Beschleunigungsstrecke so dimensioniert ist, dass die Beschleunigungsenergie des Magnetkörpers mehr Energie in der Spule bei deren Aufschlag induziert, als für die Funktionsweise des Zündsystems notwendig ist, dass nach dem Einsetzen der Abschussbeschleunigung der Zündgenerator durch seine Beharrungskräfte koaxial in eine zweite, heckseitige Endstellung bewegt wird, so dass seine Beschleunigung während des Weges zwischen der ersten, zielseitigen und der zweiten, heckseitigen Endstellung steigt und dass das heckseitige Reaktionssteil des Magnetkerns auf den mit einer zentralen Bohrung versehenen Aufschlag-Körper aufschlägt, dass hier eine mechanische Sicherung des Reaktionsteils entsichert und dieser Magnetkern in bezug auf die Spule beschleunigt wird, wobei in der Spule elektrische Energie erzeugt wird, und dass durch die Federkraft der Zündgenerator in seine erste Endstellung zurückgeführt wird und hier die elektrische Energie bereitgestellt und an ein mechanisch und/oder elektrisch gesichertes Zündsystem abgegeben wird.According to the invention, the above-mentioned object is achieved in that the ignition generator is held resiliently in the first, target-side end position, at the time of firing by a spring force and is secured against vibrations and damage to the ignition system, and is located in the upper target-side housing at a distance of the acceleration distance from the rear-side impact -Body is located, the acceleration path is dimensioned so that the acceleration energy of the magnetic body induces more energy in the coil when it hits it, than is necessary for the functioning of the ignition system, that after the onset of the launch acceleration, the ignition generator due to its persistent forces coaxially into a second , rear end position is moved so that its acceleration increases during the path between the first, target-side and the second, rear-side end position and that the rear-side reaction part of the magnetic core on the verse with a central bore The impact body opens that a mechanical safety device for the reaction part is unlocked here and this magnetic core is accelerated with respect to the coil, whereby electrical energy is generated in the coil, and that the ignition generator is returned to its first end position by the spring force and here the electrical energy is provided and is delivered to a mechanically and / or electrically secured ignition system.

Der Vorteil der Erfindung besteht darin, dass nach Einsetzen der Abschussbeschleunigung die zur Zündung des elektrischen Detonators erforderliche Energie direkt beim Abschuss erzeugt wird, und zwar durch den Zündgenerator selbst. Dieser wird auf einer vorgegebenen Anlaufstrecke über eine bestimmte Zeitspanne beschleunigt und auf einen mit einer Bohrung versehenen Aufschlag-Körper (Amboss) geschleudert. Beim Aufprall auf den Amboss bewegt sich der Magnetkern, und der Zündgenerator erzeugt einen Spannungsstoss und lädt damit den im Zündgenerator selbst befindlichen Kondensator auf. Am Ende der Beschleunigungsphase wird der Zündgenerator durch Federkraft in die Ausgangslage zurückgestossen und gibt im Zusammenspiel mit weiteren Sicherheitseinrichtungen seine Energie im richtigen Zeitpunkt zur Zündung ab. Die Feder, die in der Ruhestellung den Zündgenerator in der ersten, zielseitigen Endstellung hält, funktioniert gleichzeitig als ein Dämpfungsglied und dämpft eventuelle Vibrationen bei einer falschen Manipulation oder bei einem Fall des Geschosses, so dass diese federnde Lagerung den Zündgenerator nicht nur vor einer Beschädigung des Zündsystems schützt, sondern auch die Funktionssicherheit dieses Teils wesentlich erhöht.The advantage of the invention is that after the launch acceleration has started, it is necessary to ignite the electrical detonator Such energy is generated directly when the shot is fired, specifically by the ignition generator itself. This is accelerated over a predetermined start-up distance over a certain period of time and hurled onto an impact body (anvil) provided with a bore. When it hits the anvil, the magnetic core moves and the ignition generator generates a voltage surge, thus charging the capacitor in the ignition generator itself. At the end of the acceleration phase, the ignition generator is pushed back into the starting position by spring force and, in conjunction with other safety devices, releases its energy at the right time for ignition. The spring, which in the rest position holds the ignition generator in the first, target-oriented end position, simultaneously functions as an attenuator and dampens possible vibrations in the event of incorrect manipulation or in the event of a projectile falling, so that this resilient mounting not only protects the ignition generator from damage to the Ignition system protects, but also increases the functional safety of this part significantly.

Weitere vorteilhafte Ausgestaltungen sind Gegenstand der abhängigen Ansprüche.Further advantageous refinements are the subject of the dependent claims.

Gemäss Anspruch 2 ist es zweckmässig, wenn der Zündgenerator gemeinsam mit dem mechanisch und/oder elektrisch gesicherten Zündsystem im Gehäuse durch Beharrungskräfte und in umgekehrter Richtung durch die Kraft der Druckfeder bewegt wird, und dass dabei der Zündgenerator mit dem Zündsystem gemeinsam zwischen der zielseitigenn ersten Endstellung und der heckseitigen, zweiten Endstellung bewegt werden. Es ist selbstverständlich, dass die Druckfeder entsprechend der erhöhten beweglichen Masse angepasst wird. Durch die Erhöhung der beweglichen Masse wird auch die Beschleunigungsenergie beim Aufschlag erhöht.According to claim 2, it is expedient if the ignition generator is moved together with the mechanically and / or electrically secured ignition system in the housing by inertial forces and in the opposite direction by the force of the compression spring, and that the ignition generator and the ignition system are moved together between the target-side first end position and the rear end position are moved. It goes without saying that the compression spring is adapted in accordance with the increased movable mass. Increasing the moving mass also increases the acceleration energy on impact.

Es ist vorteilhaft, gemäss Anspruch 3, dass der Zündgenerator in einem Zeitintervall in einer Bohrung und in seinen Endstellungen, über eine vorbestimmte Strecke begrenzt, axial geführt wird. Die Strecke wird so dimensioniert, dass man beim Aufprall der Spule eine ausreichend hohe induzierte Spannung erhält.It is advantageous, according to claim 3, that the ignition generator is guided axially in a time interval in a bore and in its end positions, limited over a predetermined distance. The distance is dimensioned so that a sufficiently high induced voltage is obtained when the coil hits.

Nach Anspruch 4 wird der Zündgenerator vorteilhafterweise durch eine Federkraft in einer zielseitigen, ersten Endstellung gehalten und die entsprechende Druckfeder derart gewählt, dass durch eine Abschussbeschleunigung von 100 bis 300 g . S-2 während wenigstens 3 ms der Zündgenerator in seine zweite, heckseitige Endstellung gebracht wird. Bei den genannten Werten hat sich die Funktionsweise des Zündsystems sehr gut bewährt.According to claim 4, the ignition generator is advantageously held in a target-oriented, first end position by a spring force and the corresponding compression spring is selected such that a launch acceleration of 100 to 300 g. S - 2 while the ignition generator is brought into its second, rear-side end position for at least 3 ms. With the values mentioned, the functioning of the ignition system has proven itself very well.

Die Vorrichtung nach Anspruch 5 besteht darin, dass der Zündgenerator in einem Gehäuse durch eine Druckfeder in der Bohrung in einer ersten Endstellung gelagert ist, einen in einer Kontakthülse teleskopartig bewegbaren Kontaktstift aufweist und mit dem in einem Gehäuse befindlichen Rotor, der eine Zündpille trägt und der sich aus einer Sicherheitsstellung in eine armierte Stellung drehen lässt, in dieser ersten Endstellung elektrisch verbunden ist. Diese Vorrichtung ist sicherheitstechnisch besonders günstig. Sie verhindert eine vorzeitige elektrische Vorbereitung des Geschosses für die Explosion, da bereits bei geringer Abschussbeschleunigung die elektrische Verbindung zum Zündpillenträger durch das « Abheben des Kontaktstiftes unterbrochen wird.The device according to claim 5 is that the ignition generator is mounted in a housing by a compression spring in the bore in a first end position, has a contact pin which is telescopically movable in a contact sleeve and with the rotor located in a housing which carries a squib and which can be turned from a safety position into a reinforced position, is electrically connected in this first end position. This device is particularly inexpensive in terms of safety. It prevents premature electrical preparation of the projectile for the explosion, since the electrical connection to the squib carrier is interrupted by «lifting off the contact pin even at low launch acceleration.

Eine vorteilhafte Weiterbildung nach Anspruch 6 besteht darin, dass die Beschleunigungsstrecke des Zündgenerators in bezug auf das Gehäuse des Zündsystems grösser ist als die Beschleunigungsstrecke des Magnetkernes in bezug auf die Spule. Somit wird während einer längeren Strecke die steigende Beschleunigung ausgenützt, die dann beim Aufschlag der Spule durch eine schnellere Bewegung des Magnetkerns eine Erhöhung der induzierten Spannung verursacht.An advantageous development according to claim 6 is that the acceleration distance of the ignition generator with respect to the housing of the ignition system is greater than the acceleration distance of the magnetic core with respect to the coil. Thus, the increasing acceleration is exploited over a longer distance, which then causes an increase in the induced voltage when the coil hits by a faster movement of the magnetic core.

Nach einer Weiterbildung gemäss Anspruch 7 ist der Zündgenerator in einem mit einem Gewinde versehenen unteren Gehäuse in Längsrichtung bewegbar angeordnet und das gesicherte Zündsystem in einem oberen Gehäuse fest gelagert. Diese Variante rechnet also nur mit der Beschleunigung des eigentlichen Zündgenerators, wobei auch in diesem Fall eine ausreichende elektrische Energie für das Zündsystem induziert wird.According to a development according to claim 7, the ignition generator is arranged to be movable in the longitudinal direction in a threaded lower housing and the secured ignition system is fixedly mounted in an upper housing. This variant therefore only calculates the acceleration of the actual ignition generator, with sufficient electrical energy being induced for the ignition system in this case too.

Gemäss einer anderen Variante nach Anspruch 8 ist der Zündgenerator gemeinsam mit dem gesicherten Zündsystem in Isolierhülsen befestigt und die Isolierhülsen sind in Längsrichtung gleitend in einem Gehäuse gelagert. Diese Variante bedeutet eine konstruktive Vereinfachung und die bewegliche Masse, die die Zündung auslösen soll, ist bei den technisch notwendigen Bestandteilen grösser.According to another variant according to claim 8, the ignition generator is fastened together with the secured ignition system in insulating sleeves and the insulating sleeves are slidably mounted in a housing in the longitudinal direction. This variant means a simplification of the design and the moveable mass that is to trigger the ignition is greater with the technically necessary components.

Gemäss Anspruch 9 sind in der zylindrischen Bohrung des unteren Gehäuses wenigstens zwei periphere Ausnehmungen vorgesehen. Sie dienen zur Verminderung der Reibung des Zündgenerators an der Gehäusewand während seiner Beschleunigung und verhindern ein Verklemmen in der Bohrung. Die in der Bohrung vorhandene Luft kann ohne Schwierigkeit verdrängt werden.According to claim 9, at least two peripheral recesses are provided in the cylindrical bore of the lower housing. They serve to reduce the friction of the ignition generator on the housing wall during its acceleration and prevent jamming in the bore. The air in the borehole can be displaced without difficulty.

Nach einer bevorzugten Ausführungsform sind gemäss Anspruch 10 die Ausnehmungen symmetrisch angebracht. Dabei haben sich insbesondere vier symmetrisch angebrachte Ausnehmungen bewährt. Auf den verbleibenden Flächen der Bohrung kann der Zündgenerator weitgehend reibungsfrei gleiten.According to a preferred embodiment, the recesses are made symmetrically. In particular, four symmetrically arranged recesses have proven successful. The ignition generator can slide largely frictionlessly on the remaining surfaces of the bore.

Nach Anspruch 11 ist im unteren Teil des unteren Gehäuses ein Aufschlag-Körper in einem Stauchkörper gefasst. Der Aufschlag-Körper dient als Amboss.According to claim 11, an impact body is contained in a compression body in the lower part of the lower housing. The impact body serves as an anvil.

Gemäss Anspruch 12 weist der Aufschlag-Körper eine zentrale Bohrung auf. Diese zentrale Bohrung ermöglicht das Eindringen eines mit dem Magnetkern beweglichen Reaktionsteils beim Aufschlag. Sie weist eine zweckmässig konische Offnung auf, die ein sicheres Eindringen auch bei grösserer Toleranz der axialen Führung des Reaktionsteils erlaubt.According to claim 12, the impact body has a central bore. This central hole allows a reaction part that is movable with the magnetic core to penetrate upon impact. It has an expediently conical opening, which allows a safe penetration even with greater tolerance of the axial guidance of the reaction part.

Gemäss Anspruch 13 sind die Gehäuse vorteilhaft aus einer Aluminiumlegierung gefertigt. Aluminium weist ein geringes spezifisches Gewicht auf und lässt sich wirtschaftlich zu einem schraubbaren Zündgehäuse verarbeiten. In den Zeichnungen ist die Erfindung anhand von zwei Beispielen näher beschrieben. Es zeigt :

  • Fig. 1 einen Längsschnitt durch das Zündsystem des ersten Beispiels in gesicherter Stellung,
  • Fig. 2 eine Draufsicht in die Öffnung des unteren Gehäuses, gemäss Fig. 1,
  • Fig. 3 einen vergrösserten Schnitt durch den Zündgenerator, gemäss Fig. 1,
  • Fig. 4 einen charakteristischen zeitlichen Verlauf eines durch Triebwerke beschleunigten Munitionskörpers,
  • Fig. 5 einen Längsschnitt durch das Zündsystem des zweiten Beispiels in gesichertem Zustand und
  • Fig. 6 einen Längsschnitt durch die beispielsweise Ausfertigung aus Fig. 5 beim Abschuss.
According to claim 13, the housing is advantageously made of an aluminum alloy. Alu minium has a low specific weight and can be economically processed into a screwable ignition housing. In the drawings, the invention is described in more detail using two examples. It shows :
  • 1 shows a longitudinal section through the ignition system of the first example in a secured position,
  • 2 is a plan view into the opening of the lower housing, according to FIG. 1,
  • 3 shows an enlarged section through the ignition generator, according to FIG. 1,
  • 4 shows a characteristic course over time of an ammunition body accelerated by engines,
  • Fig. 5 shows a longitudinal section through the ignition system of the second example in the secured state and
  • Fig. 6 shows a longitudinal section through the example from Fig. 5 when firing.

Gemäss Fig. 1 ist ein Zündsystem mit 1 bezeichnet. Ein oberes Gehäuse 2 ist mit wenigstens einem Befestigungsteil 2' versehen und mit einem unteren Gehäuse 3 kleineren Durchmessers verschraubbar verbunden. Das obere Gehäuse 2 des Zündsystems 1 trägt einen Gewindering 4 und einen zylindrischen Stift 5. Im Innern des oberen Gehäuses 2 ist in einer Isolierhülse 6 ein Rotor 7 in einem Sicherheitselement 8 eingebaut. Der Rotor 7 weist eine Bohrung 7' auf und beinhaltet eine an sich bekannte elektrische Zündpille 9, die mit einem Polstift 9' versehen ist. Im gesicherten Zustand steht diese quer zur Zündkette. Zwei nicht gezeigte Sperren verhindern, dass sich der Rotor 7 vorzeitig dreht und die Zündkette schliesst. Eine Gewindebohrung 10 ist zur Aufnahme eines Detonators (Booster) vorgesehen. Im Sicherheitselement 8 ist eine weitere Bohrung 11 vorgesehen, die zur Zentrierung eines Teleskopkontaktstiftes 12 dient, der in einer Kontakthülse 13 eines Zündgenerators 14 angebracht ist. Zwischen dem Zündgenerator 14 und der Isolierhülse 6 ist eine leitende Kontaktierfläche 15 vorgesehen. Im Aufriss des Zündgenerators 14 ist ein Reaktionsteil 16 angedeutet, welcher den unteren Polschuh bildet. Eine Scheibe 17 wird mittels einer Druckfeder 18 gehalten. Die Druckfeder 18 ist mit einer Halterung 17' fixiert und hat auch die Funktion eines Dämpfungsgliedes, so dass eventuelle Vibrationen oder ein Aufprall bei einem Fallen des Munitionskörpers keine Schäden des Zündsystems verursachen können. Die Druckfeder 18 ist in einer Aussparung 19 zwischen einem stauchkörper 20 und der Zylinderwand des unteren Gehäuses 3 verkeilt. Der Stauchkörper 20, der einen Leerraum 20' aufweist, besteht aus Blei und dient zur Befestigung eines Aufschlag-Körpers 21 (Amboss), in welchen eine keilförmige zentrale Bohrung 22 ausgebildet ist.1, an ignition system is designated by 1. An upper housing 2 is provided with at least one fastening part 2 'and is screwably connected to a lower housing 3 of smaller diameter. The upper housing 2 of the ignition system 1 carries a threaded ring 4 and a cylindrical pin 5. Inside the upper housing 2, a rotor 7 is installed in a security element 8 in an insulating sleeve 6. The rotor 7 has a bore 7 'and contains a known electrical squib 9, which is provided with a pole pin 9'. In the secured state, this is across the ignition chain. Two locks, not shown, prevent the rotor 7 from rotating prematurely and closing the ignition chain. A threaded bore 10 is provided for receiving a detonator (booster). A further bore 11 is provided in the security element 8, which serves to center a telescopic contact pin 12, which is attached in a contact sleeve 13 of an ignition generator 14. A conductive contact surface 15 is provided between the ignition generator 14 and the insulating sleeve 6. A reaction part 16, which forms the lower pole piece, is indicated in the elevation of the ignition generator 14. A disc 17 is held by means of a compression spring 18. The compression spring 18 is fixed with a holder 17 'and also has the function of an attenuator, so that any vibrations or an impact when the ammunition body falls cannot cause damage to the ignition system. The compression spring 18 is wedged in a recess 19 between a compression body 20 and the cylinder wall of the lower housing 3. The upsetting body 20, which has an empty space 20 ′, is made of lead and is used to fasten an impact body 21 (anvil) in which a wedge-shaped central bore 22 is formed.

Gleiche Teile sind in allen Zeichnungen mit denselben Bezugsziffern versehen.Identical parts are provided with the same reference numbers in all drawings.

Fig. 2 zeigt eine Draufsicht auf die Bohrung 23 des unteren Gehäuses 3. Den äusseren Rand bildet ein Gewinde 24. In die innere Oberfläche der Bohrung 23 sind periphere Ausnehmungen 3' angebracht. Fig. 2 zeigt vier solcher peripheren Ausnehmungen 3'.FIG. 2 shows a top view of the bore 23 of the lower housing 3. The outer edge is formed by a thread 24. In the inner surface of the bore 23 there are peripheral recesses 3 '. 2 shows four such peripheral recesses 3 '.

In Fig. 3 werden die für die Erfindung wesentlichen Teile des vergrössert gezeichneten Zündgenerators 14 beschrieben. Der Zündgenerator 14 weist in seinem oberen Teil ein Dielektrikum 25, beispielsweise aus ausgehärtetem Araldit (Marke der Fa. Ciba Geigy AG), auf, in welches ein Kondensator 26 und eine Diode 27 eingebettet sind. Im unteren, heckseitigen Teil befindet sich eine Spule 28, die einen Magnetkern 29 zwischen dem Reaktionsteil 16 als unteren Polschuh und einem Teil 30 als oberen Polschuh umschliesst. Der obere Teil und der untere Teil sind durch eine Scheibe 31 voneinander getrennt. Der Zündgenerator 14 ist von einem Gehäuse 32 umgeben, aus welchem der Kontaktstift 12 herausragt.3, the parts of the ignition generator 14 which are essential for the invention are described. The ignition generator 14 has in its upper part a dielectric 25, for example made of hardened araldite (brand from Ciba Geigy AG), in which a capacitor 26 and a diode 27 are embedded. In the lower, rear part there is a coil 28 which encloses a magnetic core 29 between the reaction part 16 as the lower pole piece and a part 30 as the upper pole piece. The upper part and the lower part are separated from one another by a disk 31. The ignition generator 14 is surrounded by a housing 32, from which the contact pin 12 protrudes.

In Fig. 4 ist der charakteristische Verlauf einer Beschleunigungskurve eines Munitionskörpers wiedergegeben. Es ist der Verlauf der Beschleunigung b in Abhängigkeit von der Zeit t dargestellt. Im Zeitpunkt vor dem Abschuss befindet sich der Munitionskörper mit dem erfindungsgemässen Zündsystem in einer ersten Stellung to in Ruhe. Nach dem Einsetzen der Abschussbeschleunigung b bewegt sich der Zündgenerator 14 in eine zweite Endstellung t" wobei der Reaktionsteil 16 mit seiner Spitze auf die zentrale Bohrung 22 im heckseitigen unteren Gehäuseteil 3 aufschlägt. Dabei gleitet der Zündgenerator 14 bei seiner Beschleunigung auf den Kanten der Ausnehmungen 3' unter geringster Reibung entlang. Eine Komprimierung der Luft kann nicht erfolgen, da diese durch die Kanäle, die durch die Ausnehmungen 3' gebildet werden, rasch genug zu entweichen vermag. Während der Retardationsphase wird der Zündgenerator 14 mittels der Druckfeder 18 in seine erste Endstellung zurückgeführt, die er zum Zeitpunkt t2 erreicht. Zum Zeitpunkt t3 ist die Beschleunigung b konstant, zum Zeitpunkt t4 ist der Zünder armiert und zum Zeitpunkt t5 erfolgt die Zündung. Die Zündung erfolgt beim Auftreffen ins Ziel, wobei die Doppelhaube eines Munitionskörpers eingedrückt und so der Zündstromkreis geschlossen wird.4 shows the characteristic course of an acceleration curve of an ammunition body. The course of the acceleration b as a function of the time t is shown. At the time before the launch, the ammunition body with the ignition system according to the invention is at rest in a first position t o . After the launch acceleration b has started, the ignition generator 14 moves into a second end position t ", the tip of the reaction part 16 striking the central bore 22 in the rear lower housing part 3. The ignition generator 14 slides on the edges of the recesses 3 as it accelerates The air cannot be compressed since it can escape quickly enough through the channels formed by the recesses 3. During the retardation phase, the ignition generator 14 is moved into its first end position by means of the compression spring 18 returned, which it reaches at time t 2. At time t 3 , the acceleration b is constant, at time t 4 the igniter is armored and the ignition takes place at time t 5. The ignition occurs when it hits the target, the double hood of an ammunition body pressed in and the ignition circuit is closed.

Die Fig. 5 und 6 zeigen die zweite beispielsweise Ausfertigung. Gemäss Fig. 5 befindet sich die Vorrichtung im gesicherten Zustand, die Fig. 6 zeigt den Zustand der Vorrichtung beim Abschuss. In beiden Figuren ist ein einteiliges Gehäuse 33 mit einem Deckel 34 versehen. Dieser Deckel 34 weist eine Öffnung 35 auf. Das Sicherheitselement 8 ist mit einer Isolierscheibe 36 versehen, die eine Öffnung 37 aufweist. Unter dem Sicherheitselement 8 befindet sich ein 0-Ring 38. Dieser O-Ring 38 distanziert das Sicherheitselement 8 vom Zündgenerator 14. Unter dem Zündgenerator 14 ist eine Scheibe 39 angeordnet, die mit einer Öffnung 40 versehen ist. Diese Scheibe 39 dient als obere Abstützung für die Druckfeder 18 und entspricht der Scheibe 17 aus der Fig. 1. Das obere Ende der Druckfeder 18 ist durch eine ringformige Halterung 41 gesichert. Im Sicherheitselement 8 ist die im Rotor 7 angeordnete Zündpille 9 mit dem Polstift 9' gelagert. Der Polstift 9' befindet sich in der Bohrung 7' im Rotor 7. Ein Sperrstift 42 greift in den Bereich des Rotors ein. Das Sicherheitselement 8 ist auf der unteren Seite mit einer Isolierscheibe 43 versehen. Das einteilige Gehäuse 33 weist einen Befestigungsflansch 44 auf. Der Zündgenerator 14 befindet sich in einer unteren Isolierhülse 45, die mit der oberen Isolierhülse 6 fest verbunden ist, so dass das Sicherheitselement 8 und der Zündgenerator 14 eine Einheit (Fig. 5, 6) bilden. Wie es schon beim ersten Beispiel beschrieben wurde, enthält auch das zweite Beispiel einen Aufschlagkörper 21, der in einem Stauchkörper 20 gelagert ist.5 and 6 show the second copy, for example. 5, the device is in the secured state, FIG. 6 shows the state of the device when fired. In both figures, a one-piece housing 33 is provided with a cover 34. This cover 34 has an opening 35. The security element 8 is provided with an insulating washer 36 which has an opening 37. There is an O-ring 38 under the safety element 8. This O-ring 38 distances the safety element 8 from the ignition generator 14. A disk 39 is arranged under the ignition generator 14 and is provided with an opening 40. This disc 39 serves as an upper support for the compression spring 18 and corresponds to the disc 17 from FIG. 1. The upper end of the compression spring 18 is secured by an annular holder 41. In the security element 8, the squib 9 arranged in the rotor 7 is mounted with the pole pin 9 '. The pole pin 9 'is located in the bore 7' in the rotor 7. A locking pin 42 engages in the area of the rotor. The security element 8 is provided on the lower side with an insulating washer 43. The one-piece housing 33 has a fastening flange 44. The ignition generator 14 is located in a lower insulating sleeve 45 which is fixedly connected to the upper insulating sleeve 6, so that the safety element 8 and the ignition generator 14 form a unit (FIGS. 5, 6). As has already been described in the first example, the second example also contains an impact body 21 which is mounted in an upsetting body 20.

Die Funktionsweise der Vorrichtung gemäss den Fig. 5 und 6 ist dieselbe, wie beim anfangs beschriebenen Beispiel. Der Unterschied liegt im wesentlichen nur darin, dass das Sicherheitselement 8 mit dem Zündgenerator 14 mittels Isolationshülsen 6 und 45 zusammen verbunden ist, so dass diese Bestandteile eine Einheit bilden und sich gemeinsam im Gehäuse 33 bewegen. Wie schon oben betont wurde, erreicht man damit eine grössere bewegliche Masse und erhöht somit zusätzlich die Funktionssicherheit der Vorrichtung.The operation of the device according to FIGS. 5 and 6 is the same as in the example described at the beginning. The difference is essentially only that the security element 8 is connected to the ignition generator 14 by means of insulation sleeves 6 and 45, so that these components form a unit and move together in the housing 33. As has already been emphasized above, this achieves a larger movable mass and thus additionally increases the functional reliability of the device.

Das erfindungsgemässe elektrische Zündsystem ist speziell für niedere Beschleunigungen ausgelegt, wie sie auch bei raketenangetriebener Munition auftreten.The electrical ignition system according to the invention is specially designed for low accelerations, as they also occur with rocket-powered ammunition.

Bleibt der elektrische Zündkreis aus irgend einem Grunde offen, entlädt sich der Kondensator 26 des Zündgenerators 14 in etwa 10 Minuten ; es resultiert ein energiefreier Blindgänger.If the electrical ignition circuit remains open for some reason, the capacitor 26 of the ignition generator 14 discharges in about 10 minutes; the result is an energy-free dud.

Die erfindungsgemässe Lösung erlaubt die Schaffung autonomer Zündsysteme, welche unabhängig von sekundären Speisungen (Batterien etc.) funktionsfähig sind. Die bereitgestellte elektrische Energie ist ausreichend, um neben einer sicheren Zündung von sogenannten Dünnschicht-Zündpillen auch noch elektrische Sicherheitsvorrichtungen, Zeitglieder (•Timer•) und Näherungs-Sensoren mit Energie zu versorgen.The solution according to the invention enables the creation of autonomous ignition systems which are functional independently of secondary supplies (batteries, etc.). The electrical energy provided is sufficient to supply electrical safety devices, timers (• timers •) and proximity sensors with energy in addition to the safe ignition of so-called thin-film pills.

Gegenüber bisher bekannten Zündverfahren und Vorrichtungen, welche in raketengetriebener Munition Verwendung fanden, erlaubt der Erfin- dungsgegenstand zudem grosse Vereinfachungen in der Prüfung und Wartung. Da nun Unterhalts- und/oder Testarbeiten jederzeit unabhängig von der Stromversorgung des übrigen Systems (Steuerelektronik etc.) erfolgen können, lässt sich auch die Sicherheit für das Wartungs- und Betriebspersonal in hohem Masse steigern.Compared to previously known ignition and devices which were used in rocket-propelled ammunition allowed the f He also domestic dung object-great simplifications in the testing and maintenance. Since maintenance and / or test work can now be carried out at any time regardless of the power supply to the rest of the system (control electronics, etc.), safety for maintenance and operating personnel can also be increased to a great extent.

Claims (13)

1. A method of increasing the energy in an electromagnetic fuse system (1) of relatively moderately accelerated munitions, a coil (28) with a coaxially movable magnetic core (29) being arranged in a detonating generator (14) for which an impact member (21) facing the rear is provided in a lower casing (3) of the fuse system (1), and a reaction member (16) safeguarded mechanically in its rest position being moved with respect to its stator by the effect of the launching acceleration, and the electrical energy which results therefrom and which is induced in the coil (28) being stored in a capacitor (26) and being made available for detonating an electric detonator pellet (9), characterized in that the detonating generator (14) is held resiliently by a spring force (F) in the first end position (I) facing the target at the moment of launch (to) and is protected from vibration and damage to the fuse system (1) and is arranged in the upper casing (2) facing the target at a distance of the acceleration path (s) from the impact member (21) facing the rear, the acceleration path (s) being dimensioned such that the acceleration energy of the magnetic member (29) induces more energy in the coil (26) on the impact thereof than required for the mode of operation of the fuse system (1), after the start of the launching acceleration (b) the detonating generator (14) is moved by its forces of inertia coaxially into a second end position (II) facing the rear, so that its acceleration increases during the movement between the first end position (I) facing the target and the second end position (II) facing the rear, and the reaction member (16) of the magnetic core (29) facing the rear strikes the impact member (21) provided with a central bore (22), a mechanical safeguard on the reaction member (16) is taken off and the said magnetic core (29) is accelerated relative to the coil (28), electrical energy being produced in the coil (28), and the detonating generator (14) is returned by the spring force (F) to its first end position (I) and the electrical energy is made available here and delivered to a mechanically and/or electrically safeguarded fuse system (7, 8.9). (Figs. 1, 2, 4).
2. A method according to Claim 1, characterized in that the detonating generator (14) together with the mechanically and/or electrically safeguarded fuse system (7, 8, 9) is moved in the casing (33) by forces of inertia and in the opposite direction by the force of the compression spring (18), and the detonating generator (14) together with the fuse system (7, 6, 9) is moved between the first end position (I) facing the target and the second end position (II) facing the rear. (Figs. 5, 6)
3. A method according to Claim 1, characterized in that the detonating generator (14) is guided axially at a time interval (to to tx) in a bore (23) and in its end positions (I, II), limited over a predetermined path (s). (Figs. 1, 5, 4)
4. A method according to Claim 1, characterized in that the detonating generator (14) is held by a spring force (F) in a first end position (I) facing the target and the corresponding compression spring (18) is selected in such a way that the detonating generator (14) is moved into its second end position (II) facing the rear by a launching acceleration of from 100 to 300 g - s-2 for a duration of at least 3 ms. (Fig. 1)
5. An apparatus for performing the method according to at least one of Claims 1 to 4, characterized in that the detonating generator (14) is mounted in a casing (3, 33) by a compression spring (18) in the bore (11) in a first end position (I), comprises a contact pin (12) movable telescopically in a contact sleeve (13) and is electrically connected in this first end position (I) to the rotor (7) which is disposed in a casing (2, 33) and which carries a detonating pellet (9) and can be rotated from a safeguarded position to an armed position, an impact member (21) being arranged in the second end position (II) facing the rear. (figs. 1, 6)
6. An apparatus according to Claim 5, characterized in that the acceleration path (s) of the detonating generator (14) is greater with respect to the casing (2, 3, 33) of the fuse system (1) than the acceleration path of the magnetic core (29) with respect to the coil (28). (Figs. 1, 5)
7. An apparatus according to Claim 5, characterized in that the detonating generator (14) is arranged movably in the longitudinal direction in a lower casing (3) provided with a thread (24), and the safeguarded fuse system (7, 8, 9) is mounted securely in the upper casing (2). (Fig. 1)
8. An apparatus according to Claim 5, characterized in that the detonating generator (14) together with the safeguarded fuse system (7, 8, 9) is secured in insulating sleeves (6, 45), and the insulating sleeves (6, 45) are mounted in a casing (33) so as to be slidable in the longitudinal direction. (figs. 4, 5)
9. An apparatus according to Claim 7, characterized in that at least two peripheral recesses (3') are provided in the cylindrical bore (23) of the lower casing (3). (fig. 2)
10. An apparatus according to Claim 9, characterized in that the recesses (3') are arranged symmetrically. (fig. 2)
11. An apparatus according to Claim 5, characterized in that the impact member (21) is mounted in a compression member (20). (fig. 1)
12. An apparatus according to Claim 11, characterized in that the impact member (21) has a central bore (22). (figs. 1, 5)
13. An apparatus according to Claim 5, characterized in that the casings (2, 3, 33) consist of an aluminium alloy. (figs. 1, 5, 6)
EP85810045A 1984-02-24 1985-02-07 Method and device for increasing the energy in an electromagnetic fuze system Expired EP0156763B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85810045T ATE36601T1 (en) 1984-02-24 1985-02-07 METHOD AND DEVICE FOR INCREASING ENERGY IN AN ELECTROMAGNETIC IGNITION SYSTEM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH919/84A CH669454A5 (en) 1984-02-24 1984-02-24
CH919/84 1984-02-24

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EP0156763A1 EP0156763A1 (en) 1985-10-02
EP0156763B1 true EP0156763B1 (en) 1988-08-17

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US (1) US4637311A (en)
EP (1) EP0156763B1 (en)
AT (1) ATE36601T1 (en)
CH (1) CH669454A5 (en)
DE (1) DE3564489D1 (en)
ZA (1) ZA85708B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10241724B4 (en) * 2002-09-10 2007-06-14 Diehl Bgt Defence Gmbh & Co. Kg Electrogenerative ignition device for an explosive device

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EP0156763A1 (en) 1985-10-02
US4637311A (en) 1987-01-20
DE3564489D1 (en) 1988-09-22
CH669454A5 (en) 1989-03-15
ATE36601T1 (en) 1988-09-15
ZA85708B (en) 1985-10-30

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