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EP0197359B1 - Safety device for a fuze activated by the rotation of a projectile - Google Patents

Safety device for a fuze activated by the rotation of a projectile Download PDF

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Publication number
EP0197359B1
EP0197359B1 EP86103528A EP86103528A EP0197359B1 EP 0197359 B1 EP0197359 B1 EP 0197359B1 EP 86103528 A EP86103528 A EP 86103528A EP 86103528 A EP86103528 A EP 86103528A EP 0197359 B1 EP0197359 B1 EP 0197359B1
Authority
EP
European Patent Office
Prior art keywords
projectile
rotor
safety device
balance
axis
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.)
Expired
Application number
EP86103528A
Other languages
German (de)
French (fr)
Other versions
EP0197359A1 (en
Inventor
Robert Apothéloz
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 Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
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 Werkzeugmaschinenfabrik Oerlikon Buhrle AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Publication of EP0197359A1 publication Critical patent/EP0197359A1/en
Application granted granted Critical
Publication of EP0197359B1 publication Critical patent/EP0197359B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C9/00—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition
    • F42C9/02—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means
    • F42C9/04—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means by spring motor
    • F42C9/048—Unlocking of clockwork mechanisms, e.g. by inertia or centrifugal forces; Means for disconnecting the clockwork mechanism from the setting mechanism

Definitions

  • the invention relates to a safety device for a swirl projectile detonator with an escapement which has an unrest.
  • the swirl securing member consists of a cylindrical housing in which a spring-loaded piston is inserted, which can be pushed into a bore in the rotor and which, due to the twist, counter to the force of the spring, is displaceable from the bore of the rotor and three recesses for a locking body are arranged in the piston.
  • the locking body protrudes from the first recess into a bore in the cylindrical housing and lies against a shoulder of the housing of the securing device. From the second recess of the piston, the locking body only protrudes into the bore of the cylindrical housing. In the third recess of the piston, the locking body is completely in this piston without protruding from this recess.
  • the known securing device for the swirl projectile detonator can be considerably simplified.
  • the simplification is achieved in that the unrest is asymmetrical, so that the center of gravity of the unrest is outside the swivel axis of this unrest and that the swivel axis of the unrest coincides with the swirl axis when the inhibitor mechanism runs off.
  • the inhibitor cannot run at all during the spin acceleration, as will be explained further below.
  • the swirl acceleration thus prevents the projectile detonator from igniting prematurely, because the swirl forces are necessary for the inhibitor to run at all; on the other hand, the swirl acceleration forces prevent the unrest from moving prematurely.
  • each projectile fuse must have two independent safety devices.
  • FIGS. 1-3 Before the prior art is explained with reference to FIGS. 1-3, the subject matter of the invention will first be explained with reference to FIG. 4.
  • the restlessness 14 consists of a disk-shaped body 36 which has two symmetrical, trapezoidal recesses 37, and a small central bore 38 through which an axis 15 projects, about which the restlessness 14 can be pivoted in both directions of rotation.
  • a round recess 39 which has only the purpose of shifting the center of gravity S out in the middle. The center of gravity S is thus to the right of the pivot axis 15.
  • the force D generated by the swirl is radial to the swirl axis, while the force B generated during the swirl acceleration acts tangentially to the axis 15 at the center of gravity S and generates a torque which prevents the unrest from swinging back and forth as long as the force B is effective.
  • an additional body 40 can be fastened to the restlessness 14, through which the center of gravity 5 would also be shifted, although it would come to a different location.
  • the known securing device 10 contains a rotor 11 (FIG. 2) which is rotatably mounted about an axis 12.
  • An ignition capsule 13 is fastened in this rotor 11.
  • the unrest 14, which is also referred to as a vibrating anchor, is mounted in the rotor 11.
  • the restlessness 14 is rotatable about a pin 15 which is arranged displaceably in the rotor 11 and which is in its uppermost position in FIG. 1.
  • the axis of the bolt 15 coincides with the swirl axis of the projectile, as can be seen from FIG. 2.
  • the restlessness 14, which can be pivoted about the pin 15, works together with a gearwheel 16.
  • the gearwheel 16 With each pivoting movement of the restlessness 14, the toothed wheel 16 can rotate one tooth further.
  • the gearwheel 16 is driven by a toothed segment 17 (FIG. 3) via a transmission which consists of four gearwheels 18, 19, 20, 21.
  • the gear 18 is rigidly connected to the gear 16.
  • the two gears 16 and 18 are rotatably supported about an axis 22.
  • the gears 19 and 20 are also rigidly connected to one another and are rotatably supported about an axis 23, the gear 19 on the one hand meshing with the gear 18 and on the other hand the gear 20 with the gear 21.
  • the gear 21 is rotatable about an axis 24 and is in engagement with the toothed segment 17.
  • the toothed segment 17 rotates under the action of the swirl from the position shown in FIG. 3 in the direction of arrow A and thereby drives the toothed wheel 16 via the toothed wheels 21, 20, 19 and 18, causing the unrest 14 - and is pivoted here.
  • the toothed segment 17 is mounted on the axis 12 independently of the rotor 11. As can be seen from FIGS. 1 and 3, the toothed segment 17 can hit the primer 13 when it rotates counterclockwise and can also rotate the rotor 11 in the direction of arrow A.
  • the aforementioned bolt 15 will protrude with its conical head 25 into a bore 26 in the housing 27 (Fig. 1), whereby the rotor 11 is secured against unintentional rotation.
  • the rotor 11 is secured against rotation by two securing members 29 and 30, of which the first securing member 29 responds to the swirl, for releasing the roto 11 into its focused position and of which the second securing member 30 responds to the launch acceleration responds to release the rotor 11 in its focus.
  • the second securing element 30 has a cylindrical housing 31, in which a ball 32 is located in a longitudinal bore and is pressed against a second, small ball 33 by a spring, not shown. This small ball 33 can protrude into a recess 34 of the rotor 11 (FIG.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Fuses (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Lighters Containing Fuel (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Description

Die Erfindung betrifft eine Sicherungsvorrichtung für einen Drallgeschosszünder mit einem Hemmwerk, das eine Unruhe besitzt.The invention relates to a safety device for a swirl projectile detonator with an escapement which has an unrest.

Insbesondere betriftt die Erfindung eine Sicherungsvorrichtung für ein Drallgeschoss mit einer Verstärkerladung und einem Zünder, enthaltend:

  • a) einen Rotor, der sich beim Abschuss des Geschosses aus einer Sperrstellung in eine Scharfstellung bewegen lässt und dessen Achse ausserhalb der Drallachse des Geschosses gelagert ist;
  • b) ein Hemmwerk, mit einer Unruhe, das den Rotor nach Abschuss des Geschosses zur Drehung in seine Scharfstellung freigibt;
  • c) ein erstes Sicherungsorgan, das auf die Abschussbeschleunigung und auf den Drall anspricht, zur Freigabe des Rotors für seine Drehung in die Scharfstellung;
  • d) ein zweites Sicherungsorgan, das auf den Drall des Geschosses anspricht, zur Freigabe des Rotors für seine Drehung in die Scharfstellung,
    wobei die Sicherungsvorrichtung in einem Gehäuse angeordnet ist, d.h. der Rotor, das Hemmwerk, das erste und das zweite Sicherungsorgan befinden sich in diesem Gehäuse und bilden eine Baueinheit, die zwischen Verstärkerladung und Zünder des Drallgeschosses angeordnet werden kann und wobei dar erste Sicherungsorgan ebenfalls in einem eigenen Gehäuse angeordnet ist, das als eigene Baueinheit in das Gehäuse der Sicherungsvorrichtung eingebaut ist.
In particular, the invention relates to a safety device for a swirl projectile with an amplifier charge and a detonator, comprising:
  • a) a rotor which can be moved from a blocking position to a focus position when the projectile is fired and whose axis is mounted outside the swirl axis of the projectile;
  • b) an escapement, with a restlessness, which releases the rotor into its focus after the projectile has been fired;
  • c) a first safety device, which responds to the launch acceleration and the swirl, for releasing the rotor for its rotation into the arming position;
  • d) a second safety device, which responds to the swirl of the projectile, to release the rotor for its rotation into the focus position,
    wherein the safety device is arranged in a housing, that is, the rotor, the inhibitor, the first and the second safety element are in this housing and form a structural unit that can be arranged between the booster charge and the detonator of the swirl projectile, and wherein the first safety element is also in one own housing is arranged, which is installed as a separate unit in the housing of the safety device.

Bei einer bekannten Sicherungsvorrichtung dieser Art (siehe EP-A-0 046 906) besteht das Drallsicherungsorgan aus einem zylindrischen Gehäuse, in welchem ein federbelasteter, in eine Bohrung des Rotors hineinschiebbarer Kolben angeordnet ist, der durch den Drall, entgegen der Kraft der Feder, aus der Bohrung des Rotors verschiebbar ist und im Kolben sind drei Aussparungen für einen Sperrkörper angeordnet. Aus der ersten Aussparung ragt der Sperrkörper in eine Bohrung des zylindrischen Gehäuses und liegt an einer Schulter des Gehäuses der Sicherungsvorrichtung an. Aus der zweiten Aussparung des Kolbens ragt der Sperrkörper nur in die Bohrung des zylindrischen Gehäuses. In der dritten Aussparung des Kolbens befindet sich der Sperrkörper vollständig in diesem Kolben, ohne aus dieser Aussparung herauszuragen.In a known securing device of this type (see EP-A-0 046 906), the swirl securing member consists of a cylindrical housing in which a spring-loaded piston is inserted, which can be pushed into a bore in the rotor and which, due to the twist, counter to the force of the spring, is displaceable from the bore of the rotor and three recesses for a locking body are arranged in the piston. The locking body protrudes from the first recess into a bore in the cylindrical housing and lies against a shoulder of the housing of the securing device. From the second recess of the piston, the locking body only protrudes into the bore of the cylindrical housing. In the third recess of the piston, the locking body is completely in this piston without protruding from this recess.

Mit der vorliegenden Erfindung lässt sich nun die bekannte Sicherungsvorrichtung für den Drallgeschosszünder wesentlich vereinfachen. Erfindungsgemäss wird die Vereinfachung dadurch erreicht, dass die Unruhe asymmetrisch ausgebildet ist, damit sich der Schwerpunkt der Unruhe ausserhalb der Schwenkachse dieser Unruhe befindet und dass die Schwenkachse der Unruhe beim Ablaufen des Hemmwerkes mit der Drallachse zusammenfällt.With the present invention, the known securing device for the swirl projectile detonator can be considerably simplified. According to the invention, the simplification is achieved in that the unrest is asymmetrical, so that the center of gravity of the unrest is outside the swivel axis of this unrest and that the swivel axis of the unrest coincides with the swirl axis when the inhibitor mechanism runs off.

Diese asymmetrisch ausgebildete Unruhe bewirkt, dass während der Drallbeschleunigung das Hemmwerk gar nicht ablaufen kann, wie weiter unten noch erläutert ist. Die Drallbeschleunigung verhindert somit ein vorzeitiges Zünden des Geschosszünders, denn die Drallkräfte sind notwendig, damit das Hemmwerk überhaupt abläuft, andererseits verhindern die Drallbeschleunigungskräfte, dass die Unruhe sich vorzeitig bewegen kann.As a result of this asymmetrical restlessness, the inhibitor cannot run at all during the spin acceleration, as will be explained further below. The swirl acceleration thus prevents the projectile detonator from igniting prematurely, because the swirl forces are necessary for the inhibitor to run at all; on the other hand, the swirl acceleration forces prevent the unrest from moving prematurely.

Durch eine asymmetrisch ausgebildete Unruhe, bei der sich der Schwerpunkt ausserhalb der Schwenkachse befindet, ist daher das oben erwähnte, an sich bekannte Drallsicherungsorgan nicht mehr notwendig. Aus Sicherheitsgründen muss jeder Geschosszünder zwei voneinander unabhängige Sicherheitsorgane aufweisen. Als erstes Sicherheitsorgan wird z. B. eines verwendet, das auf die Abschussbeschleunigung anspricht. Als zweites Sicherheitsorgan wird z. B. eines verwendet, das auf den Drall anspricht. Dieses zweite Sicherheitsorgan kann weggelassen werden, wenn erfindungsgemäss die Unruhe asymmetrisch ausgebildet wird.As a result of an asymmetrically designed restlessness, in which the center of gravity is located outside the swivel axis, the above-mentioned known anti-swirl device is no longer necessary. For safety reasons, each projectile fuse must have two independent safety devices. As the first security organ z. B. uses one that responds to the launch acceleration. As a second security organ z. B. uses one that responds to the swirl. This second safety element can be omitted if the unrest is designed asymmetrically according to the invention.

Ein Ausführungsbeispiel der erfindungsgemässen Sicherheitsvorrichtung ist im folgenden, anhand der beigefügten Zeichnung, ausführlich beschrieben. Es zeigt:

  • Fig. 1 einen Schnitt durch die Sicherungsvorrichtung nach Linie I-I in Fig .3 gemäss Stand der Technik;
  • Fig. 2 einen Schnitt nach Linie 11-11 in Fig. 1 gemäss Stand der Technik;
  • Fig. 3 einen Schnitt nach Linie 111-111 in Fig. 1 gemäss Stand der Technik;
  • Fig. 4 eine Ansicht einer Unruhe entsprechend der vorliegenden Erfindung in vergrössertem Maßstab.
An embodiment of the safety device according to the invention is described in detail below with reference to the accompanying drawing. It shows:
  • 1 shows a section through the safety device according to line II in Figure 3 according to the prior art.
  • 2 shows a section along line 11-11 in FIG. 1 according to the prior art;
  • 3 shows a section along line 111-111 in FIG. 1 according to the prior art;
  • Fig. 4 is a view of an unrest according to the present invention on an enlarged scale.

Bevor der Stand der Technik anhand der Fig. 1-3 erläutert wird, soll zuerst der Erfindungsgegenstand anhand der Fig 4 erläutert werden.Before the prior art is explained with reference to FIGS. 1-3, the subject matter of the invention will first be explained with reference to FIG. 4.

Gemäss Fig. 4 besteht die erfindungsgemässe Unruhe 14 aus einem scheibenförmigen Körper 36, der zwei symmetrische, trapezförmige Aussparungen 37 aufweist, sowie eine kleine zentrale Bohrung 38, durch welche eine Achse 15 hindurchragt, um die sich die Unruhe 14 in beiden Drehrichtungen schwenken lässt. Ausserdem ist noch eine runde Aussparung 39 vorhanden, welche nur den Zweck hat, den Schwerpunkt S auf der Mitte heraus zu verschieben. Der Schwerpunkt S befindet sich somit rechts neben der Schwenkachse 15. Wenn das Hemmwerk, in dem diese Unruhe 14 eingebaut ist, abläuft, dann wird die Unruhe 14, um ihre Achse 15, in Richtung des Doppelpfeiles E hin- und hergeschwenkt. Falls sich das Hemmwerk mit dieser Unruhe 14 in einem Drallgeschosszünder befindet, dann wirkt beim Abschuss des Geschosses, d.h. solange sich das Geschoss im Waffenrohr befindet, eine Drallbeschleunigungskraft B, die im Punkt S, d.h. im Schwerpunkt an der Unruhe 14 angreift. Sobald das Geschoss das Waffenrohr verlässt, dann wirkt nur noch die Kraft D, welche ebenfalls im Punkt 5 an der Unruhe 14 angreift. Es hat sich nun gezeigt, dass die Drallbeschleunigungskraft B so gross ist, dass das Hemmwerk nicht ablaufen kann. Das heisst, das Hemmwerk beginnt erst abzulaufen, wenn die Drallbeschleunigungskraft B beim Austritt des Geschosses aus dem Waffenrohr verschwindet. Die Kraft D ist ohne Bedeutung, da sie durch die Drehachse der Unruhe 14 hindurch geht. Die durch den Drall erzeugte Kraft D steht radial zur Drallachse, während die bei der Drallbeschleunigung erzeugt Kraft B tangential zur Achse 15 am Schwerpunkt S angreift und ein Drehmoment erzeugt, das ein Hin- und Herschwingen der Unruhe verhindert, solange die Kraft B wirksam ist. Statt der Aussparung 39 kann an der Unruhe 14 ein Zusatzkörper 40 befestigt werden, durch den der Schwerpunkt 5 ebenfalls verlagert würde, wobei er jedoch an eine andere Stelle käme.4, the restlessness 14 according to the invention consists of a disk-shaped body 36 which has two symmetrical, trapezoidal recesses 37, and a small central bore 38 through which an axis 15 projects, about which the restlessness 14 can be pivoted in both directions of rotation. In addition, there is also a round recess 39, which has only the purpose of shifting the center of gravity S out in the middle. The center of gravity S is thus to the right of the pivot axis 15. When the escapement in which this unrest 14 is installed runs, then the unrest 14 is pivoted back and forth about its axis 15 in the direction of the double arrow E. If the escapement with this restlessness 14 is in a swirl projectile detonator, then when the projectile is fired, ie as long as the projectile is in the weapon barrel, a swirl acceleration force B acts at point S, ie focuses on the restlessness 14 attacks. As soon as the projectile leaves the weapon barrel, then only the force D acts, which also acts on the rest 14 at point 5. It has now been shown that the swirl acceleration force B is so great that the inhibitor cannot run. This means that the escapement only begins to run when the swirl acceleration force B disappears when the projectile emerges from the weapon barrel. The force D is of no importance since it passes through the axis of rotation of the unrest 14. The force D generated by the swirl is radial to the swirl axis, while the force B generated during the swirl acceleration acts tangentially to the axis 15 at the center of gravity S and generates a torque which prevents the unrest from swinging back and forth as long as the force B is effective. Instead of the recess 39, an additional body 40 can be fastened to the restlessness 14, through which the center of gravity 5 would also be shifted, although it would come to a different location.

Gemäss Fig. 1-3 enthält die bekannte Sicherungsvorrichtung 10 einen Rotor 11 (Fig. 2) , der um eine Achse 12 drehbar gelagert ist. In diesem Rotor 11 ist eine Zündkapsel 13 befestigt. Ferner ist im Rotor 11 die Unruhe 14, die auch als Schwinganker bezeichnet wird, gelagert. Die Unruhe 14 ist um einen Bolzen 15 drehbar, der verschiebbar im Rotor 11 angeordnet ist und der sich in Fig. 1 in seiner obersten Stellung befindet. In der Sicherungsstellung des Rotors 11 fällt die Achse des Bolzens 15 mit der Drallachse des Geschosses zusammen, wie aus Fig. 2 ersichtlich ist. Die um den Bolzen 15 schwenkbare Unruhe 14 wirkt zusammen mit einem Zahnrad 16. Bei jeder Schwenkbewegung der Unruhe 14 kann sich das Zahnrad 16 um einen Zahn weiter drehen. Das Zahnrad 16 wird von einem Zahnsegment 17 (Fig. 3) über ein Getriebe angetrieben, das aus vier Zahnrädern 18, 19, 20, 21 besteht. Das Zahnrad 18 ist starr mit dem Zahnrad 16 verbunden. Die beiden Zahnräder 16 und 18 sind um eine Achse 22 drehbar gelagert. Die Zahnräder 19 und 20 sind ebenfalls starr miteinander verbunden und um eine Achse 23 drehbar gelagert, wobei einerseits das Zahnrad 19 mit dem Zahnrad 18 und andererseits das Zahnrad 20 mit dem Zahnrad 21 in Eingriff steht. Das Zahnrad 21 ist um eine Achse 24 drehbar und steht mit dem Zahnsegment 17 in Eingriff. Nach dem Abschuss des Geschosses dreht sich das Zahnsegment 17 unter der Wirkung des Dralls aus der Stellung gemäss Fig. 3 in Richtung des Pfeiles A und treibt dabei über die Zahnräder 21, 20, 19 und 18 das Zahnrad 16 an, wodurch die Unruhe 14 hin- und hergeschwenkt wird. Das Zahnsegment 17 ist unabhängig vom Rotor 11 auf der Achse 12 gelagert. Wie aus Fig. 1 und 3 ersichtlich ist, kann das Zahnsegment 17 bei seiner Drehung im Gegenuhrzeigersinne gegen die Zündkapsel 13 stossen und kann den Rotor 11 ebenfalls in Richtung des Pfeiles A drehen. Der erwähnte Bolzen 15 wird mit seinem kegelförmigen Kopf 25 in eine Bohrung 26 im Gehäuse 27 (Fig. 1) ragen, wodurch der Rotor 11 gegen eine unbeabsichtigte Drehung gesichert ist. Sobald das Zahnsegment 17 in die Stellung gemäss Fig. 1 gelangt ist, befindet sich eine Bohrung 28 im Zahnsegment 17, oberhalb des Bolzens 15, wodurch dieser sich gemäss Fig. 1 nach oben in diese Bohrung 28 hineinschieben lässt. Diese Verschiebung des Bolzens 15 wird einerseits dadurch bewirkt, dass durch den Drall der Rotor 11 das Bestreben hat, sich in Richtung des Pfeiles A zu drehen. Dabei wird der Kopf 25 des Bolzens 15 mit seiner kegeligen Fläche gegen die Kante der Bohrung 26 des Gehäuses 27 gedrückt, wodurch der Bolzen 15 nach oben in die Bohrung 28 des Segmentes 17 (Fig. 1) geschoben wird. Andererseits wird durch den Luftwiderstand das Geschoss verzögert, wodurch der Bolzen 15 ohnehin das Bestreben hat, sich nach vorne zu bewegen, d.h. in der Zeichnung nach oben. Der Rotor 11 ist bei der bekannten Vorrichtung vor dem Abschuss durch zwei Sicherungsorgane 29 und 30 gegen Drehung gesichert, von denen das erste Sicherungsorgan 29 auf den Drall anspricht, zur Freigabe des Rotos 11 in seine Scharfstellung und von denen das zweite Sicherungsorgan 30 auf die Abschussbeschleunigung anspricht, zur Freigabe des Rotors 11 in seine Scharfstellung. Gemäss Fig. 2 weist das zweite Sicherungsorgan 30 ein zylindrisches Gehäuse 31 auf, in dem sich eine Kugel 32 in einer Längsbohrung befindet und durch eine nicht dargestellte Feder gegen eine zweite, kleiner Kugel 33 gedrückt wird. Diese kleine Kugel 33 kann in eine Aussparung 34 des Rotors 11 (Fig. 2) als auch in eine Aussparung 35 des Zahnsegmentes 17 hineinragen, wobei gleichzeitig ein Teil der Kugel 33 in die Aussparung 34 des Rotors 11 und ein Teil der Kugel 33 in die Aussparung 35 des Zahnsegmentes 17 (Fig. 3) hineinragt.According to FIGS. 1-3, the known securing device 10 contains a rotor 11 (FIG. 2) which is rotatably mounted about an axis 12. An ignition capsule 13 is fastened in this rotor 11. Furthermore, the unrest 14, which is also referred to as a vibrating anchor, is mounted in the rotor 11. The restlessness 14 is rotatable about a pin 15 which is arranged displaceably in the rotor 11 and which is in its uppermost position in FIG. 1. In the locked position of the rotor 11, the axis of the bolt 15 coincides with the swirl axis of the projectile, as can be seen from FIG. 2. The restlessness 14, which can be pivoted about the pin 15, works together with a gearwheel 16. With each pivoting movement of the restlessness 14, the toothed wheel 16 can rotate one tooth further. The gearwheel 16 is driven by a toothed segment 17 (FIG. 3) via a transmission which consists of four gearwheels 18, 19, 20, 21. The gear 18 is rigidly connected to the gear 16. The two gears 16 and 18 are rotatably supported about an axis 22. The gears 19 and 20 are also rigidly connected to one another and are rotatably supported about an axis 23, the gear 19 on the one hand meshing with the gear 18 and on the other hand the gear 20 with the gear 21. The gear 21 is rotatable about an axis 24 and is in engagement with the toothed segment 17. After the projectile has been fired, the toothed segment 17 rotates under the action of the swirl from the position shown in FIG. 3 in the direction of arrow A and thereby drives the toothed wheel 16 via the toothed wheels 21, 20, 19 and 18, causing the unrest 14 - and is pivoted here. The toothed segment 17 is mounted on the axis 12 independently of the rotor 11. As can be seen from FIGS. 1 and 3, the toothed segment 17 can hit the primer 13 when it rotates counterclockwise and can also rotate the rotor 11 in the direction of arrow A. The aforementioned bolt 15 will protrude with its conical head 25 into a bore 26 in the housing 27 (Fig. 1), whereby the rotor 11 is secured against unintentional rotation. As soon as the toothed segment 17 has reached the position according to FIG. 1, there is a bore 28 in the toothed segment 17, above the bolt 15, whereby this can be pushed upwards into this bore 28 according to FIG. 1. This displacement of the bolt 15 is caused on the one hand by the fact that the twist causes the rotor 11 to strive to turn in the direction of the arrow A. The head 25 of the bolt 15 is pressed with its conical surface against the edge of the bore 26 of the housing 27, whereby the bolt 15 is pushed upwards into the bore 28 of the segment 17 (FIG. 1). On the other hand, the bullet is decelerated by the air resistance, whereby the bolt 15 has the tendency to move forward anyway, i.e. up in the drawing. In the known device, the rotor 11 is secured against rotation by two securing members 29 and 30, of which the first securing member 29 responds to the swirl, for releasing the roto 11 into its focused position and of which the second securing member 30 responds to the launch acceleration responds to release the rotor 11 in its focus. 2, the second securing element 30 has a cylindrical housing 31, in which a ball 32 is located in a longitudinal bore and is pressed against a second, small ball 33 by a spring, not shown. This small ball 33 can protrude into a recess 34 of the rotor 11 (FIG. 2) as well as into a recess 35 of the toothed segment 17, at the same time a part of the ball 33 in the recess 34 of the rotor 11 and a part of the ball 33 in the Recess 35 of the toothed segment 17 (FIG. 3) protrudes.

Wesentlich ist nun, dass durch die beschriebene Ausbildung der Unruhe 14 das erste Sicherungsorgan 29 nicht mehr erforderlich ist und daher hier nicht weiter beschrieben ist.It is essential that the first security element 29 is no longer required due to the described configuration of the restlessness 14 and is therefore not further described here.

Claims (4)

1. Safety device for a spinning projectile fuse with an escapement, which has a balance (14), characterized in that the balance (14) is constructed asymmetrically so that the centre of gravity (S) of the balance (14) is located outside the swivel axis (15) of this balance (14) and in that when the escapement returns the swivel axis (15) of the balance (14) coincides with the spin axis.
2. Safety device according to claim 1, characterized in that the balance (14) has a cutout (39) for the purpose of displacing the centre of gravity (S) outside the swivel axis (15).
3. Safety device according to claim 1, characterized in that an attachment (40) is fixed to the balance (14) for the purpose of displacing the centre of gravity (S) outside the swivel axis (15).
4. Safety device for a spinning projectile according to claim 1 with a booster charge and a fuse, containing:
a) a rotor (11), which when the projectile is started can be moved from a stop position to a firing position, and whose axis (12) is located outside the spin axis of the projectile;
b) an escapement (14-21), which after the projectile has been started releases the rotor (11) for rotation into the firing position;
c) a first safety element (30-33), which reacts to the start acceleration, for releasing the rotor (11) to rotate into the firing position;
d) a second safety element (14, 36, 39), which reacts to the spin of the projectile, for releasing the rotor (11) to rotate into the firing position, the safety device (10) being arranged in a housing (27), that is the rotor (11), the escapement (14-21), the first and the second safety elements (30, 36) are located in this housing (27) and form an assembly, which can be arranged between booster charge and fuse of the spinning projectile, and the first safety element (30) likewise being arranged in its own housing, which is built into the housing (27) of the safety device (10) as an independent assembly, characterized in that the second safety element is formed from the balance (14) of the escapement (14-21), which is constructed asymmetrically to its spin axis (15).
EP86103528A 1985-04-04 1986-03-15 Safety device for a fuze activated by the rotation of a projectile Expired EP0197359B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH148085 1985-04-04
CH1480/85 1985-04-04

Publications (2)

Publication Number Publication Date
EP0197359A1 EP0197359A1 (en) 1986-10-15
EP0197359B1 true EP0197359B1 (en) 1988-10-12

Family

ID=4211455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86103528A Expired EP0197359B1 (en) 1985-04-04 1986-03-15 Safety device for a fuze activated by the rotation of a projectile

Country Status (6)

Country Link
US (1) US4677914A (en)
EP (1) EP0197359B1 (en)
JP (1) JPS61231400A (en)
CA (1) CA1272908A (en)
DE (1) DE3660940D1 (en)
NO (1) NO168270C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796532A (en) * 1987-11-12 1989-01-10 Magnavox Government And Industrial Electronics Company Safe and arm device for spinning munitions
US4869172A (en) * 1987-11-12 1989-09-26 Magnavox Government And Industrial Electronics Company Safe and arm device for spinning munitions
DE10000177A1 (en) * 2000-01-05 2001-07-12 Junghans Feinwerktechnik Gmbh Ignition device, in particular for a mortar grenade
DE10111714C1 (en) * 2001-03-12 2002-10-10 Nico Pyrotechnik Detonator for a projectile to be fired from a tube with swirl

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2457254A (en) * 1947-09-18 1948-12-28 Borg George W Corp Delay arming device for fuses
DE1032129B (en) * 1953-07-31 1958-06-12 Onera (Off Nat Aerospatiale) Mechanical generator of simultaneous vibrations
CH464015A (en) * 1967-10-05 1968-10-15 Mefina Sa Rocket for rotating projectile
US3670655A (en) * 1970-06-09 1972-06-20 Delaware Valley Armaments Inc Timing mechanism
CH525465A (en) * 1970-06-26 1972-07-15 Oerlikon Buehrle Ag Impact fuse for projectiles
CH531158A (en) * 1970-11-03 1972-11-30 Mefina Sa Safety device for rotating projectile rocket
BE859035A (en) * 1976-11-05 1978-01-16 Sormel Sa SHUTTER SAFETY DEVICE FOR PYROTECHNIC CHAIN
US4419934A (en) * 1980-08-28 1983-12-13 Werkzeugmaschinenfabrik Oerlikon-Buhrle Ag Safety apparatus for a spinning projectile fuse
DE3107110C2 (en) * 1981-02-26 1984-03-29 Gebrüder Junghans GmbH, 7230 Schramberg Safety device for detonators of twist projectiles

Also Published As

Publication number Publication date
EP0197359A1 (en) 1986-10-15
NO168270C (en) 1992-01-29
NO861016L (en) 1986-10-06
US4677914A (en) 1987-07-07
JPS61231400A (en) 1986-10-15
DE3660940D1 (en) 1988-11-17
NO168270B (en) 1991-10-21
JPH0262799B2 (en) 1990-12-26
CA1272908A (en) 1990-08-21

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