EP0088260A1 - Firing device for an under-water charge - Google Patents

Firing device for an under-water charge Download PDF

Info

Publication number
EP0088260A1
EP0088260A1 EP83101539A EP83101539A EP0088260A1 EP 0088260 A1 EP0088260 A1 EP 0088260A1 EP 83101539 A EP83101539 A EP 83101539A EP 83101539 A EP83101539 A EP 83101539A EP 0088260 A1 EP0088260 A1 EP 0088260A1
Authority
EP
European Patent Office
Prior art keywords
detonator
water
underwater
channel
igniter
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.)
Granted
Application number
EP83101539A
Other languages
German (de)
French (fr)
Other versions
EP0088260B1 (en
Inventor
Hermann Schaper
Hans Walter Unger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rheinmetall Industrie AG
Original Assignee
Rheinmetall GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rheinmetall GmbH filed Critical Rheinmetall GmbH
Publication of EP0088260A1 publication Critical patent/EP0088260A1/en
Application granted granted Critical
Publication of EP0088260B1 publication Critical patent/EP0088260B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/44—Arrangements for disarming, or for rendering harmless, fuzes after arming, e.g. after launch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C14/00—Mechanical fuzes characterised by the ammunition class or type
    • F42C14/04—Mechanical fuzes characterised by the ammunition class or type for torpedoes, marine mines or depth charges

Definitions

  • the invention relates to an underwater detonator for combat swimmer defense charges, sound signal transmitter or the like.
  • a locking pin influenced by a pin and by a water pressure-dependent membrane fuse which is in operative connection with both a detonator and a firing pin, with two separate water pressure fuses are arranged so that the detonator can be moved into the ignition position after the one water pressure safety device has been removed and the ignition needle can be controlled against the detonator after the other water pressure safety device has been released, with a blind setting device for the water pressure safety devices, which cover the outer surface of the underwater detonator with its interior connecting water-permeable channel.
  • the blind setting device comprises a channel which establishes a connection from the inside of the detonator to the surroundings and which is closed off by means of a felt disc.
  • This felt disc allows water to penetrate into the inside of the igniter and causes the blind position to fail if it fails.
  • Such a failure can occur, for example, if the detonator gets into shallow water and does not reach the depth required to cancel the water pressure-dependent securing means.
  • the known solution shows serious disadvantages in that the passage of the water causing the blind position through the felt disc does not take place with the required reproducibility. This results in considerable problems for the use of the underwater detonator, since the resumption of detonators which have not been put into operation is associated with a considerable risk. There are further disadvantages for the shelf life of the detonator in that the felt disc also does not prevent the ingress of atmospheric moisture and thus exposes the interior of the complex detonator to destruction by corrosion.
  • the invention has for its object to provide a novel igniter that is free from the above-mentioned shortcomings.
  • the underwater detonator should only become effective after certain minimum water depths have been exceeded.
  • it has two fuses working independently of one another, which are combined to form a positive sequence unlocking system.
  • These include two water pressure safety systems, which are arranged orthogonally to each other, in order to absorb shock and shock loads that are only effective in one direction by securing the unused plane.
  • the unlocking system is only released after pulling the pin 14 (FIG. 1) and only begins to work at a certain water depth.
  • the first water pressure safety device 11 unlocks the second water pressure safety device 12 and pushes the detonator into focus, in which it is aligned with the ignition chain.
  • the second water pressure safety device only begins to work at a greater water depth and, after centering the first water pressure safety device, releases the ignition needle via a locking ball.
  • the underwater detonator 20 consists of the inner and outer housing parts 19 and 110.
  • the inner part of the detonator is sealed to the outside by 0-rings 111 and membrane 112.
  • Sieves 117 are arranged in front of the membranes and are secured with locking rings 118.
  • the two housing parts are closed by a head part 119 and a threaded ring 120.
  • the system After pulling the connector 14, the system is unlocked.
  • the spring 125 of the second pressure safety device 2 pushes the guide pin back approximately 2 mm, so that its upper part 113 is visible and can be felt.
  • the lower part of the guide pin unlocks the first pressure safety device 11.
  • the pressure systems only begin to work one after the other after immersion in the water and sinking to a certain water depth, depending on the force of the associated springs 125 or 125 '.
  • the first water pressure safety device 11 releases the work path for the guide bolt of the second water pressure safety device 12.
  • the detonator is brought into focus and the blind setting device is opened.
  • the control pin 28 is actuated by the first water pressure safety device 11, as will be described in more detail below.
  • the second pressure safety device 12 only begins to work at a greater water depth.
  • the guide pin penetrates into the centering hole of the first water pressure safety device 11, as a result of which the locking ball 118 can change into the free space of the guide pin and thus releases the firing needle 15, which is tensioned by the spring 121.
  • the ignition needle 15 sticks into the detonator 122.
  • the detonator 122 responds and ignites the ignition amplifier 123, which is fastened with a threaded ring 124 in the lower part of the inner housing 19. If the underwater detonator does not find a sufficient depth of water because it has been discharged into water that is too shallow, the second water pressure safety device 12 does not respond.
  • a blind setting device is provided, which ensures that after a relatively short period of rest in the water, both water pressure safety devices 11 and 12 are transferred back to security.
  • the channel 21 is closed off from the outside by a water-permeable disk 27, which suitably consists of sintered metal.
  • Sintered metal is a relatively porous material and to a certain extent permeable to water. Since the specified pore size, unlike in the known felt disk, cannot be changed essentially by environmental influences, for example also moisture, there is a well-defined water permeability which leads to the safety devices being secured after a precisely definable period of time in the blind position.
  • means 21 'for moisture-proof blocking of the channel 21 are arranged.
  • These essentially consist of a pot-shaped sleeve 24 which is slidably mounted in the channel 21 and which is pressure-loaded by a spring 26 which is arranged in its interior and is supported on the disk 27 and on its bottom surface facing away from the disk 27 a protruding into the interior of the igniter 20, by a 0-ring 25 coaxial control pin 28 carries.
  • the sleeve 24 is in the rest position, in which it presses the O-ring 25 against the interior of the igniter 20 and thus brings about a moisture-tight closure of the interior. In this way, even extreme environmental conditions, in particular high humidity, cannot damage the complex internal structure of the igniter 20, since air humidity, if it penetrates the pane 27, at most reaches the channel 21, which contains no critical parts.
  • the components of the igniter which are still exposed to atmospheric moisture can be made in the region of the channel 21 from a correspondingly corrosion-resistant material.
  • the detonator body 22 which is mounted in a longitudinally displaceable manner, shifts in a direction orthogonal to the channel 21.
  • the control pin 28 connected to the sleeve 24 engages in a groove 23 made in the detonator carrier 22 parallel to its longitudinal extent and rests on a control surface 29 provided in the bottom of the groove.
  • the control pin 28 is pushed outward by the control surface 29 in the radial direction, which leads to the fact that the sealing of the interior caused by the 0-ring 25 is canceled. If, as a result of immersion of the igniter 20 in water, it enters the channel through the disk 27, it can also get into the interior of the igniter body 20, since the channel 21 now creates a water-permeable connection between the interior of the igniter and the external environment. The passage of water through the channel 21 is further promoted in that, as shown in FIG. 3, the sleeve 24 is delimited by flat surfaces 30 on diametrically opposite areas of its outer surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Emergency Lowering Means (AREA)
  • Safety Valves (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Bei einem Unterwasser-Zünder mit mehreren wasserdruckabhängigen Systemen ist eine Blindstelleinrichtung vorgesehen, die zeitverzögert eine Blindstellung des Zünders bewirkt, wenn dieser nach Auslösung nicht in Funktion tritt. Die Blindstellung wird durch Wasser hervorgerufen, das über eine wasserdurchlässige, aus Sintermetall bestehende Abschlußscheibe (27) über einen Kanal (21) in das Innere des Zünders (20) eindringt und dort für eine Angleichung des Innen- und Außendrucks sorgt. Durch den Druckausgleich kehrt die Sicherung (11) in den Ruhezustand zurück. Die Sintermetallscheibe (27) ermöglicht einen wohldefinierten Wasserdurchtritt, wodurch reproduzierbare Blindstellzeiten erreicht werden. Durch zusätzliche Absperrmittel, die eine Hülse (24), eine Druckfeder (26), einen O-Ring (25) und einen Steuerstift (28) umfassen, der auf einer mit dem Detonatorträger (22) verbundenen Steuerfläche (29) aufliegt, wird sichergestellt, daß das Innere des Zünders (20) während der Lagerung feuchtigkeitsdicht und damit korrosionssicher abgeschlossen ist. Erst bei Aktivierung des Zünders wird infolge der Betätigung des Steuerstifts (28) durch die Steuerfläche (29) eine wasserdurchlässige Verbindung zum Innern des Zünders (20) hergestellt.In the case of an underwater detonator with several water pressure-dependent systems, a blind setting device is provided which, with a time delay, causes the detonator to go blind if it does not function after being triggered. The blind position is caused by water which penetrates via a channel (21) into the interior of the igniter (20) via a water-permeable cover plate (27) made of sintered metal and ensures an equalization of the internal and external pressure there. Due to the pressure equalization, the fuse (11) returns to the idle state. The sintered metal disc (27) enables well-defined water passage, which means that reproducible idle times are achieved. It is ensured by additional shut-off means, which comprise a sleeve (24), a compression spring (26), an O-ring (25) and a control pin (28) which rests on a control surface (29) connected to the detonator carrier (22) that the interior of the igniter (20) is moisture-proof and thus corrosion-proof during storage. Only when the igniter is activated is a water-permeable connection to the interior of the igniter (20) established as a result of the control pin (28) being actuated by the control surface (29).

Description

Die Erfindung betrifft einen Unterwasser-Zünder für Kampfschwimmer-Abwehrladungen, Schallsignalgeber oder dgl. mit einem durch einen Vorstecker und durch eine wasserdruckabhängige Membransicherung beeinflußten Sicherungsstift, der sowohl mit einem Detonator als auch mit einer Zündnadel in Wirkverbindung steht, mit zwei voneinander getrennten Wasserdrucksicherungen, die um zwei um 90° zueinander versetzte Wirkachsen derart angeordnet sind, daß nach dem Aufheben der einen Wasserdrucksicherung der Detonator in die Zündstellung verschiebbar und nach Freigabe der anderen Wasserdrucksicherung die Zündnadel gegen den Detonator steuerbar ist, mit einer Blindstelleinrichtung für die Wasserdrucksicherungen, die einen die Außenmantelfläche des Unterwasserzünders mit seinem Inneren verbindenden wasserdurchlässigen Kanal umfaßt.The invention relates to an underwater detonator for combat swimmer defense charges, sound signal transmitter or the like. With a locking pin influenced by a pin and by a water pressure-dependent membrane fuse, which is in operative connection with both a detonator and a firing pin, with two separate water pressure fuses are arranged so that the detonator can be moved into the ignition position after the one water pressure safety device has been removed and the ignition needle can be controlled against the detonator after the other water pressure safety device has been released, with a blind setting device for the water pressure safety devices, which cover the outer surface of the underwater detonator with its interior connecting water-permeable channel.

Ein derartiger Unterwasser-Zünder ist aus der DE-OS 28 44 188 bekannt. Bei diesem bekannten Unterwasser-Zünder umfaßt die Blindstelleinrichtung einen Kanal, der eine Verbindung vom Inneren des Zünders zur Umgebung herstellt und der vermittels einer Filzscheibe abgeschlossen ist. Diese Filzscheibe ermöglicht das Eindringen von Wasser in das Innere des Zünders und bewirkt durch Druckanstieg eine Blindstellung bei dessen Versagen.Such an underwater detonator is known from DE-OS 28 44 188. In this known underwater detonator, the blind setting device comprises a channel which establishes a connection from the inside of the detonator to the surroundings and which is closed off by means of a felt disc. This felt disc allows water to penetrate into the inside of the igniter and causes the blind position to fail if it fails.

Ein solches Versagen kann beispielsweise eintreten, wenn der Zünder in Flachwasser gerät und die zur Aufhebung der wasserdruckabhängigen Sicherungsmittel erforderliche Tiefe nicht erreicht.Such a failure can occur, for example, if the detonator gets into shallow water and does not reach the depth required to cancel the water pressure-dependent securing means.

Die bekannte Lösung zeigt insofern schwerwiegende Nachteile, als der Durchtritt des die Blindstellung bewirkenden Wassers durch die Filzscheibe nicht mit der geforderten Reproduzierbarkeit stattfindet. Dadurch ergeben sich erhebliche Probleme für den Einsatz des Unterwasser-Zünders, da die Wiederaufnahme von nicht in Funktion versetzten Zündern mit einem erheblichen Risiko verbunden ist. Weiter ergeben sich Nachteile für die Lagerfähigkeit des Zünders dadurch, daß die Filzscheibe auch das Eindringen von Luftfeuchtigkeit nicht verhindert und somit das Innere des komplexen Zünders der Zerstörung durch Korrosion preisgibt.The known solution shows serious disadvantages in that the passage of the water causing the blind position through the felt disc does not take place with the required reproducibility. This results in considerable problems for the use of the underwater detonator, since the resumption of detonators which have not been put into operation is associated with a considerable risk. There are further disadvantages for the shelf life of the detonator in that the felt disc also does not prevent the ingress of atmospheric moisture and thus exposes the interior of the complex detonator to destruction by corrosion.

Der Erfindung liegt die Aufgabe zugrunde, einen neuartigen Zünder anzugeben, der von den vorstehend erläuterten Mängeln frei ist.The invention has for its object to provide a novel igniter that is free from the above-mentioned shortcomings.

Diese Aufgabe wird durch die in Patentanspruch 1 angegebene Erfindung gelöst.This object is achieved by the invention specified in claim 1.

Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung gehen aus den Unteransprüchen hervor.Advantageous refinements and developments of the invention emerge from the subclaims.

Die Erfindung wird nachfolgend unter Bezug auf die Zeichnung näher erläutert. Dabei zeigt:

  • Fig. 1: den Unterwasser-Zünder im Längsschnitt;
  • Fig. 2: einen Querschnitt des Unterwasser-Zünders in der Querschnittsebene 2 - 2 gem. Fig. 1;
  • Fig. 3: einen Schnitt entlang Ebene 3 - 3 der Fig. 2 zur Erläuterung der Hülse 24.
The invention is explained in more detail below with reference to the drawing. It shows:
  • Fig. 1: the underwater detonator in longitudinal section;
  • 2: a cross section of the underwater detonator in the cross-sectional plane 2 - 2 acc. Fig. 1;
  • 3 shows a section along plane 3 - 3 of FIG. 2 to explain the sleeve 24.

Der Unterwasser-Zünder soll erst nach Überschreiten bestimmter Mindestwassertiefen wirksam werden. Er verfügt dazu über zwei voneinander unabhängig arbeitende Sicherungen, die zu einem Zwangsfolgeentriegelungssystem zusammengesetzt sind. Dazu gehören zwei Wasserdrucksicherungssysteme, die orthogonal zueinander angeordnet sind, um Stoß- und Schockbelastungen, die nur in einer Richtung wirksam sind, durch die Sicherung der nicht beanspruchten Ebene aufzufangen. Das Entriegelungssystem wird erst nach Ziehen des Vorsteckers 14 (Fig. 1) freigegeben und beginnt erst in einer bestimmten Wassertiefe zu arbeiten. Die erste Wasserdrucksicherung 11 entriegelt die zweite Wasserdrucksicherung 12 und schiebt den Detonator in Scharfstellung, in der er mit der Zündkette fluchtet. Die zweite Wasserdruck- sicherung beginnt erst in einer größeren Wassertiefe zu arbeiten und gibt nach Zentrierung der ersten Wasserdrucksicherung die Zündnadel über eine Sperrkugel frei.The underwater detonator should only become effective after certain minimum water depths have been exceeded. For this purpose, it has two fuses working independently of one another, which are combined to form a positive sequence unlocking system. These include two water pressure safety systems, which are arranged orthogonally to each other, in order to absorb shock and shock loads that are only effective in one direction by securing the unused plane. The unlocking system is only released after pulling the pin 14 (FIG. 1) and only begins to work at a certain water depth. The first water pressure safety device 11 unlocks the second water pressure safety device 12 and pushes the detonator into focus, in which it is aligned with the ignition chain. The second water pressure safety device only begins to work at a greater water depth and, after centering the first water pressure safety device, releases the ignition needle via a locking ball.

Der Unterwasser-Zünder 20 besteht aus dem inneren und äußeren Gehäuseteil 19 bzw. 110. Der innere Teil des Zünders ist nach außen durch 0-Ringe 111 und Membrane 112 abgedichtet. Vor den Membranen sind Siebe 117 angeordnet, die mit Sicherungsringen 118 befestigt sind. Die beiden Gehäuseteile werden durch ein Kopfteil 119 und einen Gewindering 120 verschlossen.The underwater detonator 20 consists of the inner and outer housing parts 19 and 110. The inner part of the detonator is sealed to the outside by 0-rings 111 and membrane 112. Sieves 117 are arranged in front of the membranes and are secured with locking rings 118. The two housing parts are closed by a head part 119 and a threaded ring 120.

Nach Ziehen des Vorsteckers 14 wird das System entriegelt. Die Feder 125 der zweiten Drucksicherung 2drückt den Führungsbolzen ca. 2 mm zurück, so daß dessen oberer Teil 113 sichtbar und fühlbar wird. Der untere Teil des Führungsbolzens entriegelt die erste Drucksicherung 11. Die Drucksysteme beginnen erst nach dem Eintauchen in das Wasser und Absinken auf eine bestimmte Wassertiefe nacheinander abhängig von der Kraft der dazugehörigen Federn 125 bzw. 125' zu arbeiten. Zunächst gibt dabei die erste Wasserdrucksicherung 11 den Arbeitsweg für den Führungsbolzen der zweiten Wasserdrucksicherung 12 frei. Gleichzeitig wird der Detonator in die Scharfstellung gebracht und die Blindstelleinrichtung geöffnet. Der Steuerstift 28 wird durch die erste Wasserdrucksicherung 11 betätigt, wie nachfolgend noch näher beschrieben wird.After pulling the connector 14, the system is unlocked. The spring 125 of the second pressure safety device 2 pushes the guide pin back approximately 2 mm, so that its upper part 113 is visible and can be felt. The lower part of the guide pin unlocks the first pressure safety device 11. The pressure systems only begin to work one after the other after immersion in the water and sinking to a certain water depth, depending on the force of the associated springs 125 or 125 '. First of all, the first water pressure safety device 11 releases the work path for the guide bolt of the second water pressure safety device 12. At the same time, the detonator is brought into focus and the blind setting device is opened. The control pin 28 is actuated by the first water pressure safety device 11, as will be described in more detail below.

Die zweite Drucksicherung 12 beginnt erst bei einer größeren Wassertiefe zu arbeiten. Der Führungsbolzen dringt in die Zentrierbohrung der ersten Wasserdrucksicherung 11 ein, dadurch kann die Sperrkugel 118 in den freien Raum des Führungsbolzens überwechseln und gibt somitd[e Zündnadel 15, die durch die Feder 121 gespannt ist, frei. Die Zündnadel 15 sticht in den Detonator 122. Der Detonator 122 spricht an und zündet den Zündverstärker 123, der mit einem Gewindering 124 im unteren Teil des inneren Gehäuses 19 befestigt ist. Sollte der Unterwasser-Zünder keine ausreichende Wassertiefe vorfinden, weil er etwa in zu flaches Wasser ausgebracht worden ist, spricht die zweite Wasserdruck-Sicherung 12 nicht an. Um bei eintretender Ebbe einen solchen Zünder nicht als gefährliches Objekt behandeln zu müssen oder bei steigender Flut nicht zu einem unerwünschten Zeitpunkt die Zündung durch den zunehmenden Wasserdruck einzuleiten, ist eine Blindstelleinrichtung vorgesehen, die dafür Sorge trägt, daß nach relativ kurzer Ruhezeit im Wasser beide Wasserdrucksicherungen 11 und 12 wieder in Sicherstellung überführt werden.The second pressure safety device 12 only begins to work at a greater water depth. The guide pin penetrates into the centering hole of the first water pressure safety device 11, as a result of which the locking ball 118 can change into the free space of the guide pin and thus releases the firing needle 15, which is tensioned by the spring 121. The ignition needle 15 sticks into the detonator 122. The detonator 122 responds and ignites the ignition amplifier 123, which is fastened with a threaded ring 124 in the lower part of the inner housing 19. If the underwater detonator does not find a sufficient depth of water because it has been discharged into water that is too shallow, the second water pressure safety device 12 does not respond. In order not to have to treat such a detonator as a dangerous object when the tide is low, or to prevent ignition from occurring at an undesired point in time due to increasing water pressure, a blind setting device is provided, which ensures that after a relatively short period of rest in the water, both water pressure safety devices 11 and 12 are transferred back to security.

Diese Sicherstellung wird dadurch erreicht, daß über den Kanal 21 und die diesen Kanal 21 nach außen abschließende Scheibe 27 Wasser in das Innere des Zünders 20 eindringt, welches für einen Druckausgleich zwischen Innen- und Außendruck sorgt und eine Rückkehr der Federn 125 und 125' in ihre Ausgangslage bewirkt. Der Kanal 21 wird durch eine wasserdurchlässige Scheibe 27 nach außen abgeschlossen, die zweckmäßig aus Sintermetall besteht. Sintermetall ist ein relativ poröses Material und in gewissem Umfang wasserdurchlässig. Da die vorgegebene Porengröße, anders-als bei der bekannten Filzscheibe, durch Umwelteinflüsse, beispielsweise auch Feuchtigkeit, im wesentlichen nicht veränderbar ist, ist eine wohldefinierte Wasserdurchlässigkeit gegeben, die dazu führt, daß im Blindstellfall die Sicherstellung der Sicherungseinrichtungen nach einem präzise definierbaren Zeitraum erfolgt. Im Kanal 21 sind weiter,hinter der Scheibe 27 liegend, Mittel 21' zur feuchtigkeitsdichten Absperrung des Kanals 21 angeordnet. Diese bestehen im wesentlichen aus einer im Kanal 21 gleitbar gelagerten topfförmigen Hülse 24, die durch eine in ihrem Inneren angeordnete, sich an der Scheibe 27 abstützende Feder 26 druckbelastet ist und auf ihrer der Scheibe 27 abgewandten Bodenfläche einen in das Innere des Zünders 20 hineinragenden, von einem 0-Ring 25 koaxial umfaßten Steuerstift 28 trägt. Während der Lagerzeit und Bereitstellungszeit des Zünders 20 befindet sich die Hülse 24 in Ruhestellung, bei der sie den O-Ring 25 gegen das Gehäuseinnere des Zünders 20 anpreßt und damit einen feuchtigkeitsdichten Abschluß des Innenraums bewirkt. Auf diese Weise können auch extreme Umweltbedingungen, insbesondere hohe Feuchtigkeit, den komplexen Innenaufbau des Zünders 20 nicht schädigen, da Luftfeuchtigkeit, sofern sie die Scheibe 27 durchdringt, allenfalls bis in den Kanal 21 gelangt, der keine kritischen Teile enthält.This assurance is achieved in that water penetrates into the interior of the igniter 20 via the channel 21 and the disk 27 closing this channel 21 to the outside, which ensures pressure equalization between internal and external pressure and a return of the springs 125 and 125 'in their starting position. The channel 21 is closed off from the outside by a water-permeable disk 27, which suitably consists of sintered metal. Sintered metal is a relatively porous material and to a certain extent permeable to water. Since the specified pore size, unlike in the known felt disk, cannot be changed essentially by environmental influences, for example also moisture, there is a well-defined water permeability which leads to the safety devices being secured after a precisely definable period of time in the blind position. In the channel 21, further behind the disk 27, means 21 'for moisture-proof blocking of the channel 21 are arranged. These essentially consist of a pot-shaped sleeve 24 which is slidably mounted in the channel 21 and which is pressure-loaded by a spring 26 which is arranged in its interior and is supported on the disk 27 and on its bottom surface facing away from the disk 27 a protruding into the interior of the igniter 20, by a 0-ring 25 coaxial control pin 28 carries. During the storage time and preparation time of the igniter 20, the sleeve 24 is in the rest position, in which it presses the O-ring 25 against the interior of the igniter 20 and thus brings about a moisture-tight closure of the interior. In this way, even extreme environmental conditions, in particular high humidity, cannot damage the complex internal structure of the igniter 20, since air humidity, if it penetrates the pane 27, at most reaches the channel 21, which contains no critical parts.

Im Bedarfsfall können die nach wie vor der Luftfeuchtigkeit ausgesetzten Bestandteile des Zünders im Bereich des Kanals 21 aus entsprechend korrosionsfestem Material gefertigt werden. Bei Ansprechen der ersten Unterwasser-Sicherung 11, die mit einer Durchbiegung der Membran 112 verbunden ist, verschiebt sich der längsverschieblich gelagerte Detonatorkörper 22 in einer zum Kanal 21 orthogonalen Richtung. Wie aus Fig. 2 deutlich hervorgeht, greift der mit der Hülse 24 verbundene Steuerstift 28 in eine in den Detonatorträger 22 parallel zu dessen Längserstreckung eingebrachte Nut 23 ein und liegt auf einer im Boden der Nut angebrachten Steuerfläche 29 auf.If necessary, the components of the igniter which are still exposed to atmospheric moisture can be made in the region of the channel 21 from a correspondingly corrosion-resistant material. When the first underwater fuse 11, which is connected to a deflection of the membrane 112, responds, the detonator body 22, which is mounted in a longitudinally displaceable manner, shifts in a direction orthogonal to the channel 21. As is clear from FIG. 2, the control pin 28 connected to the sleeve 24 engages in a groove 23 made in the detonator carrier 22 parallel to its longitudinal extent and rests on a control surface 29 provided in the bottom of the groove.

Infolge der zuvor beschriebenen Längsverschiebung des Detonatorträgers 22 wird der Steuerstift 28 von der Steuerfläche 29 in radialer Richtung auswärts gedrängt, was dazu führt, daß die durch den 0-Ring 25 bewirkte Abdichtung des Innenraums aufgehoben wird. Tritt nun infolge Eintauchens des Zünders 20 in Wasser dieses durch die Scheibe 27 in den Kanal ein, kann es auch in das Innere des Zünderkörpers 20 gelangen, da der Kanal 21 nunmehr eine wasserdurchlässige Verbindung zwischen dem Innenraum des Zünders und der äußeren Umgebung herstellt. Der Durchtritt des Wassers durch den Kanal 21 wird noch dadurch begünstigt, daß,wie in Fig. 3 dargestellt, die Hülse 24 auf diametral gegenüberliegenden Bereichen ihrer Außenmantelfläche von ebenen Flächen 30 begrenzt ist.As a result of the longitudinal displacement of the detonator carrier 22 described above, the control pin 28 is pushed outward by the control surface 29 in the radial direction, which leads to the fact that the sealing of the interior caused by the 0-ring 25 is canceled. If, as a result of immersion of the igniter 20 in water, it enters the channel through the disk 27, it can also get into the interior of the igniter body 20, since the channel 21 now creates a water-permeable connection between the interior of the igniter and the external environment. The passage of water through the channel 21 is further promoted in that, as shown in FIG. 3, the sleeve 24 is delimited by flat surfaces 30 on diametrically opposite areas of its outer surface.

Claims (6)

1. Unterwasser-Zünder für Kampfschwimmer-Abwehrladungen, Schallsignalgeber o. dgl. mit einem durch einen Vorstecker und durch eine wasserdruckabhängige Membransicherung beeinflußten. Sicherungsstift, der sowohl mit einem Detonator, als auch mit einer Zündnadel in Wirkverbindung steht, mit zwei voneinander getrennten Wasserdrucksicherungen, die um zwei um 900 zueinander versetzte Wirkachsen derart angeordnet sind, daß nach dem Aufheben der einen Wasserdrucksicherung der Detonator in die Zündstellung verschiebbar und nach Freigabe der anderen Wasserdrucksicherung die Zündnadel gegen den Detonator steuerbar ist, mit einer Blindstelleinrichtung für die Wasserdrucksicherungen, die einen die Außenmantelfläche des Unterwasser-Zünders mit Seinem Inneren verbindenden wasserdurchlässigen Kanal umfaßt, dadurch gekennzeichnet , daß der Kanal (21) nach außen von einer wasserdurchlässigen Scheibe (27) abgeschlossen ist, und daß im Kanal (21) hinter der Scheibe (27) liegend Mittel (21') zur feuchtigkeitsdichten Absperrung des Kanals (21) angeordnet sind.1. Underwater detonator for combat swimmer defense charges, sound signal transmitters or the like with one influenced by a pin and by a water pressure-dependent membrane protection. Locking pin, which is in operative connection with both a detonator and a firing pin, with two separate water pressure fuses, which are arranged around two axes of action offset by 90 0 in such a way that the detonator can be moved into the ignition position after the one water pressure fuse has been removed and after the other water pressure safety device has been released, the ignition needle can be controlled against the detonator, with a blind setting device for the water pressure safety devices, which comprises a water-permeable channel connecting the outer surface of the underwater detonator to its interior, characterized in that the channel (21) is directed outwards from a water-permeable one Disk (27) is closed, and that means (21 ') for moisture-proof shutoff of the channel (21) are arranged in the channel (21) behind the disk (27). 2. Unterwasser-Zünder nach Anspruch 1, dadurch gekennzeichnet , daß die Scheibe (27) aus Sintermetall besteht.2. Underwater detonator according to claim 1, characterized in that the disc (27) consists of sintered metal. 3. Unterwasser-Zünder nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet , daß die Mittel (21') zur feuchtigkeitsdichten Absperrung des Kanals (21) eine im Kanal (21) gleitbar gelagerte topfförmige Hülse (24) umfassen, die durch eine in ihrem Innern angeordnete, sich an der Scheibe (27) abstützende Feder (26) druckbelastet ist und die auf ihrer der Scheibe (27) abgewandten Bodenfläche einen in das Innere des Zünders (20) hineinragenden, von einem 0-Ring (25) koaxial umfaßten Steuerstift (28) trägt.3. Underwater detonator according to one of claims 1 and 2, characterized in that the means (21 ') for moisture-proof shutoff of the channel (21) comprise a pot-shaped sleeve (24) slidably mounted in the channel (21), which by a in the spring (26), which is arranged on its inside and is supported on the disk (27), is pressure-loaded and the bottom surface on its bottom surface facing away from the disk (27) projects coaxially into the interior of the igniter (20) and is coaxially encompassed by an O-ring (25) Control pin (28) carries. 4. Unterwasser-Zünder nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet , daß der Steuerstift (28) in eine in den Detonatorkörper (22) parallel zu dessen Längserstreckung eingebrachte Nut (23) eingreift und auf einer im Boden der Nut angebrachten Steuerfläche (29) aufliegt.4. Underwater detonator according to one of claims 1 to 3, characterized in that the control pin (28) engages in a in the detonator body (22) parallel to its longitudinal extension groove (23) and on a control surface attached in the bottom of the groove ( 29) rests. 5. Unterwasser-Zünder nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet , daß der Detonatorkörper (22) orthogonal zum Kanal (21) längsverschieblich gelagert ist und daß bei Längsverschiebung des Detonatorkörpers (22) dieser vermittels seiner Steuerfläche (29) den Steuerstift (28) und die mit diesem verbundene Hülse (24) gegen den Druck der Feder (26) in Radialrichtung nach außen fortbewegt, daß die Dichtwirkung des 0-Rings (25) aufgehoben wird und eine wasserdurchlässige Verbindung zum Innern des Unterwasser-Zünders (20) besteht.5. Underwater detonator according to one of claims 1 to 4, characterized in that the detonator body (22) is mounted longitudinally displaceably orthogonal to the channel (21) and that when the detonator body (22) is displaced longitudinally, this means the control pin (29) of the control surface (29) 28) and the sleeve (24) connected to it against the pressure of the spring (26) in the radial direction to the outside, that the sealing effect of the 0-ring (25) is canceled and a water-permeable connection to the inside of the underwater detonator (20) consists. 6. Unterwasser-Zünder nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet , daß die Hülse (24) auf diametral einander gegenüberliegenden Bereichen ihrer Außenmantelfläche von ebenen Flächen (30) begrenzt ist.6. Underwater detonator according to one of claims 1 to 5, characterized in that the sleeve (24) is limited to diametrically opposite areas of its outer surface by flat surfaces (30).
EP83101539A 1982-03-04 1983-02-18 Firing device for an under-water charge Expired EP0088260B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3207700 1982-03-04
DE3207700A DE3207700C2 (en) 1982-03-04 1982-03-04 Shut-off device of a blind position device for water pressure fuses of an underwater detonator

Publications (2)

Publication Number Publication Date
EP0088260A1 true EP0088260A1 (en) 1983-09-14
EP0088260B1 EP0088260B1 (en) 1986-05-28

Family

ID=6157242

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101539A Expired EP0088260B1 (en) 1982-03-04 1983-02-18 Firing device for an under-water charge

Country Status (6)

Country Link
US (1) US4487126A (en)
EP (1) EP0088260B1 (en)
DE (2) DE8205919U1 (en)
DK (1) DK152949C (en)
ES (1) ES520285A0 (en)
NO (1) NO151762C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3705838A1 (en) * 2019-03-04 2020-09-09 Saab Dynamics AB Safety and arming unit

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142173B (en) * 1983-01-12 1986-12-03 Mp Compact Energy Ltd Signalling device
DE3415680A1 (en) * 1983-12-30 1985-07-11 Dynamit Nobel Ag, 5210 Troisdorf COMPRESSED GAS ACTUATED MECHANICAL POWER ELEMENT
US5005482A (en) * 1984-05-21 1991-04-09 The United States Of America As Represented By The Secretary Of The Navy Combined mine safety deployment and activation system
FR2584809B1 (en) * 1985-07-12 1987-11-13 France Etat Armement HYDROSTATIC SAFETY CONTROL DEVICE
US4907870A (en) * 1987-04-10 1990-03-13 Milton Brucker Device to manipulate side view mirrors for motor vehicles
DE3823183A1 (en) * 1988-07-08 1990-02-15 Messerschmitt Boelkow Blohm Safety device for a sea mine
DE4014826A1 (en) * 1990-05-09 1991-11-14 Diehl Gmbh & Co DEVICE FOR TRIGGERING A SWITCHING FUNCTION AT A PARTICULAR HYDROSTATIC PRESSURE
DE4021319A1 (en) * 1990-07-04 1992-01-16 Diehl Gmbh & Co SAFETY DEVICE FOR A RELEASE DEVICE PROVIDED FOR RELEASING A SWITCHING FUNCTION AT A PARTICULAR HYDROSTATIC PRESSURE
US20080245978A1 (en) * 2005-09-01 2008-10-09 Vulcan Lead, Inc. Shielded Device Containment Vessel
US7690287B2 (en) * 2006-07-18 2010-04-06 Maegerlein Stephen D Explosive neutralizer and method
CN104061827A (en) * 2014-06-26 2014-09-24 江南工业集团有限公司 Water pressure type underwater ignition device
US10948274B1 (en) 2019-09-27 2021-03-16 Raytheon Company Heat-activated triggering device with bi-metal triggering element
US11022414B2 (en) * 2019-09-27 2021-06-01 Raytheon Company Triggering device with safety valve and linkage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB265570A (en) * 1926-02-03 1927-06-02 William Dieter Depth bombs
US2961956A (en) * 1947-01-06 1960-11-29 Richard W Townsend Arming mechanism for a depth charge
US3048111A (en) * 1953-02-10 1962-08-07 Kenneth L Baker Submarine signal fuze
US3929055A (en) * 1963-04-12 1975-12-30 Us Navy Explosive charge pistol
DE2844188A1 (en) * 1978-10-11 1980-04-24 Rheinmetall Gmbh UNDERWATER IGNITION FOR COMBAT SWIMMING DEFENSE CHARGES, SOUND SIGNALERS OR THE LIKE.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3015270A (en) * 1959-12-24 1962-01-02 Jr Karl K Domingos Depth charge exploder mechanism
US3368488A (en) * 1965-10-22 1968-02-13 Magnavox Co Arming and firing mechanism
US3765331A (en) * 1972-04-11 1973-10-16 Us Navy Water armed air safetied detonator
ES436905A1 (en) * 1975-04-24 1977-01-01 Amado Laguna De Rins Sa Safety fuse for underwater artefacts
EP0026348B1 (en) * 1979-09-29 1985-04-24 Rheinmetall GmbH Plurally protected underwater fuse

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB265570A (en) * 1926-02-03 1927-06-02 William Dieter Depth bombs
US2961956A (en) * 1947-01-06 1960-11-29 Richard W Townsend Arming mechanism for a depth charge
US3048111A (en) * 1953-02-10 1962-08-07 Kenneth L Baker Submarine signal fuze
US3929055A (en) * 1963-04-12 1975-12-30 Us Navy Explosive charge pistol
DE2844188A1 (en) * 1978-10-11 1980-04-24 Rheinmetall Gmbh UNDERWATER IGNITION FOR COMBAT SWIMMING DEFENSE CHARGES, SOUND SIGNALERS OR THE LIKE.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3705838A1 (en) * 2019-03-04 2020-09-09 Saab Dynamics AB Safety and arming unit

Also Published As

Publication number Publication date
NO151762B (en) 1985-02-18
DK152949B (en) 1988-05-30
NO830606L (en) 1983-09-05
ES8401246A1 (en) 1983-12-01
DK74983D0 (en) 1983-02-22
DK152949C (en) 1988-10-17
DE3207700C2 (en) 1985-08-29
ES520285A0 (en) 1983-12-01
DK74983A (en) 1983-09-05
EP0088260B1 (en) 1986-05-28
DE8205919U1 (en) 1986-06-19
NO151762C (en) 1985-05-29
US4487126A (en) 1984-12-11
DE3207700A1 (en) 1983-09-08

Similar Documents

Publication Publication Date Title
EP0088260B1 (en) Firing device for an under-water charge
EP0026348B1 (en) Plurally protected underwater fuse
DE2844188C2 (en) Underwater detonators for combat swimmers defense charges, sound signal generators or the like.
DE3508453A1 (en) PAYLOAD FLOOR
DE959257C (en) Pressure switch with break ampoule for non-magnetic landmines
DE564931C (en) Water bomb
DE2548863C3 (en) Underwater ignition device
DE3407397C1 (en) Detonator for detonating explosive charges
EP1471326B1 (en) Electric switch for a projectile fuze, which switch is activated by gas pressure
DE2939711C2 (en) Underwater detonator for igniting explosive charges
DE2310194C2 (en) Pedal lighter
DE3446519A1 (en) Automatic unlocking device on vehicle doors
DE1057501B (en) Water pressure sender with depth adjustment device
DE7927845U1 (en) Underwater detonator for igniting explosive charges
EP0267407B1 (en) Safety device for the fuse of a war head
DE4021319C2 (en)
DE2426168C3 (en) Micro-timed rocket detonators
DE2907612C2 (en)
DE10354012B4 (en) Gas pressure switch for an ignition and safety device of ammunition
DE2645914C3 (en) Sound signal body for underwater sound signal generation
DE2148197C3 (en) Detonators for igniter cartridges for separators for mine mooring lines
EP0456100B1 (en) Device for triggering a switching function at a specified hydrostatic pressure
DE2854982A1 (en) Safety cut=out switch for vehicle electrics - has impact sensors linked to pressurised isolator on main battery lead
DE2854865C2 (en) Safety device for bomb detonators with wind turbine
DE1107562B (en) Land mine, especially anti-tank mine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19830505

AK Designated contracting states

Designated state(s): BE FR GB IT NL SE

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE FR GB IT NL SE

ITF It: translation for a ep patent filed

Owner name: CALVANI SALVI E VERONELLI S.R.L.

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19900112

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19900129

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19900227

Year of fee payment: 8

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19900228

Year of fee payment: 8

Ref country code: NL

Payment date: 19900228

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19910218

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19910219

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19910228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19910901

GBPC Gb: european patent ceased through non-payment of renewal fee
NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19911031

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 83101539.1

Effective date: 19911008