EP0809085A1 - Safety and cocking device, in particular for a mine - Google Patents

Safety and cocking device, in particular for a mine Download PDF

Info

Publication number
EP0809085A1
EP0809085A1 EP97400962A EP97400962A EP0809085A1 EP 0809085 A1 EP0809085 A1 EP 0809085A1 EP 97400962 A EP97400962 A EP 97400962A EP 97400962 A EP97400962 A EP 97400962A EP 0809085 A1 EP0809085 A1 EP 0809085A1
Authority
EP
European Patent Office
Prior art keywords
rod
security
slide
locking
translation
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
EP97400962A
Other languages
German (de)
French (fr)
Other versions
EP0809085B1 (en
Inventor
Maurice Philipot
André Blin
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.)
Giat Industries SA
Original Assignee
Giat Industries SA
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 Giat Industries SA filed Critical Giat Industries SA
Publication of EP0809085A1 publication Critical patent/EP0809085A1/en
Application granted granted Critical
Publication of EP0809085B1 publication Critical patent/EP0809085B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F42C15/20—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a securing-pin or latch is removed to arm the fuze, e.g. removed from the firing-pin
    • 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
    • F42C14/08—Mechanical fuzes characterised by the ammunition class or type for land mines

Definitions

  • the technical field of the invention is that of security and arming devices for ammunition and in particular for mines with horizontal action.
  • a security and arming device in which a primer carrier system passes from a security position to an armed position by the action of a timed timing system. It is also known to ensure the movement of this time delay by means of a spring which is not maintained in the banded state during storage but which is compressed at the time of arming.
  • Patent US2789508 describes such a safety device, in which it is the acceleration inertia communicated to the munition which compresses the spring.
  • This device is designed for ammunition fired by a weapon but it can be used in ammunition posable by hand, such as a mine.
  • the device according to the invention thus makes it possible to ensure the reliability of the operation of the chronometry by prohibiting any action on the control means at the end of the arming.
  • the subject of the invention is a security and arming device for a munition, in particular a mine, comprising a timepiece timing system which is armed by the movement of a control means and which causes the passage of a system. door initiator from a safety position to an armed position, device characterized in that the control means is constituted by a rod slidably mounted in a body of the device and in that the device comprises means for locking in translation of the control rod, means which are activated following the traction of the latter.
  • the device comprises a stop, integral in translation with the rod and intended to cooperate with a finger mounted to pivot relative to the body, finger able to occupy at least two positions, a position for locking in translation of the rod and a rod release position.
  • the security and arming device may include at least one return spring bringing the stop and the rod to an initial retracted position after the rod has been pulled.
  • the clock timing system will advantageously be actuated by a slider pushed by motor means, the slider being free in translation relative to the rod and being driven in translation by the stop when the rod is pulled.
  • the slide carries an cooperating extension, when it translates pushed by the motor means, with a cam profile secured to the locking finger to ensure on the one hand the passage of the latter in position locking and secondly maintaining the finger in this position during the part of the translational movement of the slide which ensures the passage of the primer holder system from its position security at its armed position.
  • the primer holder system can be kept in a safety position by at least two locks, a first lock being released following the traction of the control rod.
  • the first lock is constituted by a first lever mounted to pivot relative to the body, the pivoting of the lever being caused by the action of a stud secured to the slide.
  • the security and arming device may include a second lock which is released from the primer holder system by an action on a triggering member.
  • the second lock will then advantageously consist of a second lever mounted to pivot relative to the body and pushed towards the primer holder system by a return spring, the second lever cooperating with an abutment surface of the primer holder system so as to lock the latter when 'he occupies an armed position.
  • the slider When the primer holder system occupies its armed position, the slider will preferably be held by the watchmaking timer in its position of immobilization of the locking finger of the control rod.
  • control rod may carry an operating button making it possible to rotate it relative to the device body and to give it at least two different positions, a storage position and an operating position, the device also comprising a locking cam linked in rotation to the control rod and cooperating with a body lumen to prevent any translation of the control rod when it is in the storage position.
  • the rod When the device is placed in a housing constituting a sealed enclosure isolated from the atmosphere by seals, the rod will advantageously carry at an external end a valve comprising a cylinder which can slide relative to an axial piston, the traction of the rod causing a relative displacement of the cylinder and the piston which causes a rupture of the seal between the cylinder and the piston and a pressure balancing between the inside of the case and the outside.
  • the proposed device makes it possible to ensure a reliable passage into the arming position with reproducible delay times.
  • a safety and arming device 1 consists of a housing 2 intended to be fixed to the mine and inside which is disposed a rotor 3 carrying a primer 4 .
  • This rotor 3 can rotate about an axis 21 perpendicular to the plane of Figure 1 and it is immobilized in its safety position (which is that shown in Figures 1 to 3) by two locks.
  • the primer 4 When the rotor is in its armed position, the primer 4 is opposite and axially aligned with an opening 67 arranged in the housing, opening which communicates with an explosive charge of the mine (not shown).
  • the primer is electrically initiated, its initiation will be caused by a target detector of known type not shown, for example an infrared sensor.
  • a target detector of known type not shown, for example an infrared sensor.
  • a number of electrical contacts and safeties are provided in the device. They are not described or shown here since they do not form part of the present invention.
  • a first lock 5 of the rotor is constituted by a first lever mounted to pivot relative to the body of the housing.
  • This lever pivots around an axis 6, it has a general L shape and has a spout 7 (see FIG. 3) which engages in a notch 8 of the rotor 3.
  • the spout 7 is pushed towards the rotor by the action of a compression spring 9 which bears, on the one hand on a support bar 10 secured to the device body, and on the other hand on a fold 11 of the first lever 5.
  • Centering pins 12a, 12b are provided to maintain the spring during movement of the lever.
  • the first lever 5 carries on a lower face (see FIG. 1) a profile 54 (in the shape of an "L") which cooperates with a stud 53 carried by a movable slide 37.
  • the displacement of the slide 37 causes the pivot of the first lever 5
  • the pin 53 of the slide ensuring the maintenance of the lever in its locking position of the rotor 3.
  • the rotor 3 is also held in the safety position by a second lock 13 which is constituted by a second lever having a general L-shape and mounted pivoting relative to the body around the same axis 6 as the first lever 5.
  • This second lever 13 includes a spout 14 (see FIG. 1) which engages in a notch 15 of the rotor 3. It is kept engaged in the notch 15 of the rotor by the action of another compression spring 16 which, he too is supported by a side on a support bar 17 secured to the device body and on the other side on a face 22 of the lever 13.
  • Centering pins 18a, 18b maintain the spring 16 during the movements of the second lever.
  • the first lever 5 is located below the second lever 13.
  • the axis of rotation 6 and the pins for holding the bars 10 and 17 are fixed on a plate 19, itself made integral with the housing by screws 20.
  • the second lever 13 can be released from the rotor 3 by manual action on a triggering member constituted by a pull tab 23.
  • the pull tab has a pin 24, one enlarged end 25 of which is positioned in a housing 26 arranged at the end of a first arm 13a of the second lever 13.
  • the other end of the axis 24 carries an operating button 27.
  • a compression spring 28 pushes the zipper towards the second lever 13 and maintains it in the position shown in FIG. 1.
  • the second lever 13 can also be released from the rotor 3 by means of an electromagnet 29, one end of the rod 30 of which is positioned in a housing 31 arranged at the end of the second arm 13b of the second lever 13.
  • Figure 2 shows the safety and arming device according to the invention after removal of the plate 19 carrying the locking levers 13 and 5 and the primer carrier rotor 3, and removal of a spacer plate 52 (see Figure 4) .
  • a second plate 32 appears and it is also screwed to the body of the housing.
  • This second plate maintains the clock timing system 33 which is of a known type and will not be described in detail.
  • This system includes a number of toothed wheels, the first wheel 34 (or drive wheel) receives the mechanical energy supplied by a compression spring 36 pushing the slide 37 which carries a rack 38.
  • the last wheel 35 (or wheel of drive) is integral with the primer carrier rotor.
  • a gear train brakes the rotation of the drive wheel and ensures the desired delay.
  • the second plate 32 is partially removed in Figure 2 to show more clearly the control means of the device. Reference will also be made to FIG. 4 for the description of the control means.
  • This control means comprises a control rod 39 which extends over substantially the entire length of the housing.
  • the control rod carries at its external end a control button 40 and at its other end (internal to the housing) a movable stop 41.
  • the stop 41 is made integral with the rod 39 by means of a nut 42 (see FIG. 4).
  • the stop 41 has a bore 43 slidably mounted on a guide rod 44 secured to the housing.
  • a compression spring 45 is mounted coaxially with the rod 44, it has the effect of pushing the stop (and the control rod 39 which is linked to it) into the position shown in FIGS. 2 and 4.
  • the slide 37 is mounted free in translation on the control rod 39. It is pushed towards the stop 41 by the motor spring 36 which bears, on the one hand on a retaining washer 46 secured to the housing and on the other hand on a counterbore 47 of the internal bore 48 of the slide 37.
  • the spring 36 is guided by a sleeve 49 coaxial with the control rod.
  • the slider 37 has a window 50 inside which is positioned a locking cam 51 which is linked in rotation to the control rod 39 but which, driven by the slider, can translate relative to the rod 39.
  • control rod has a square section and in particular carries two flats 39a, 39b which extend over its entire length (see FIG. 4a for the mounting detail of the cam 51 on the rod ).
  • the function of this blocking cam will be explained below.
  • the slide 37 carries on its upper face the stud 53 cited above. This circulates in longitudinal grooves 55, 56, 57 arranged respectively on the plates 32, 19 and on the spacer 52.
  • the stud 53 cooperates with the surface of the profile 54 which is integral with the first locking lever 5 (see FIG. 1) so as to drive the first lever 5 and to release it or engage it in the notch 8 of the primer holder rotor.
  • the housing body also carries a finger 58 pivotally mounted relative to the body about an axis 59.
  • This finger can occupy at least two extreme angular positions corresponding to its abutment on an axis 60 at a cylindrical clearance 61.
  • the finger 58 has a spout 62 which is intended to cooperate with a complementary spout 63 carried by the stop 41, so as to lock in translation the control rod 39 by means of the stop 41.
  • the slider has an extension 65 which cooperates with a cam profile 64 integral with the finger 58, so as to cause the position of the latter to change during the translation of the slider.
  • the device Once the device is closed, it forms a sealed enclosure which is isolated from the atmosphere by seals. Such an arrangement improves the resistance of the device to long-term storage.
  • control rod 39 carries at its external end a valve 69 which comprises a cylinder 70 integral with the control button 40 and which can slide over a short length (1 to 2 mm) relative to an axial piston 71 integral with rod 39 (see Figure 1).
  • the valve When the interior of the housing is overpressure relative to the exterior, the valve operates automatically and balances the pressures.
  • a flexible bellows 72 is provided between the button 40 and the housing body 2, this in order to ensure a moisture-tightness whatever the position of the rod 39.
  • the seal between the cylinder 70 and the piston 71 of the valve is ensured by one or more O-rings.
  • the relative translation of the cylinder with respect to the piston makes it possible to free at least one O-ring from its contact surface, this results in a radial play of a few tenths of mm between cylinder and piston, play which is sufficient to ensure pressure balancing .
  • the initiator rotor has also been drawn in FIGS. 5 to 7 in order to specify for each state of the device what is the corresponding position of the rotor.
  • Figure 2 shows the device in its storage safety position.
  • the initiator rotor is immobilized by two locks and the control rod is also blocked in translation due to the active position of the locking cam 51.
  • the cam 51 occupies with respect to the slide 37 an angular position such that its enlarged end 51a penetrates into a rectangular opening 66 arranged on the plate 32.
  • the cam 51 abuts against the plate 32 and therefore prohibits any translation of the control rod.
  • the first lever 5 is immobilized in its locking position of the rotor 3 by the cooperation of the stud 53 of the slide 37 with the profile 54 of the first lever 5.
  • the user begins by turning the control knob 40 by 90 °. This action has the effect of rotating the locking cam 51 which is then completely housed in the slide 37 and no longer interferes with the plate 32. Traction of the control rod then becomes possible.
  • Figure 5 shows schematically the device when the control rod 39 is fully pulled.
  • the locking finger 58 has been tilted (in the direction F) from its initial position to its second position by the passage of the extension 65 of the slide 37 on the cam profile 64 of the finger 58.
  • the displacement of the slide 37 also causes the release of the first lock of the initiator rotor by the action of the stud 53.
  • the profile 54 is defined so that this release only occurs when the slide 37 arrives a few millimeters from its position extreme.
  • the second lock 13 is still engaged in the rotor which therefore remains in the safety position.
  • Figure 6 shows the device after the control rod has been released.
  • the stop 41 pushed by the return spring 45, returns to its initial position and drives the control rod 39.
  • the stop pushes the locking finger 58 in the direction G in passing, the latter not yet being blocked by the slide 37.
  • the mainspring 36 exerts a thrust on the slider 37, but the second lock 13 still being engaged in the rotor, the slider remains blocked by the time delay 33 in the position shown in FIG. 6.
  • the action on the zipper can be replaced by an action of the electromagnet 29, controlled remotely, for example by a radio remote control.
  • the timer cannot be released that if the two locks of the rotor are released, or the first lock has a position of the profile 54 (fig 1) such that it is only released by the stud 53 of the slide only when the latter is 1 or 2 millimeters from the position shown in Figure 5 (ie that corresponding to the maximum traction for the rod).
  • the movement of the slide causes the locking finger 58 to tilt in the direction F from the start of the time delay, due to the action of the extension 65 on the cam profile 64.
  • the finger adopts the locking position shown in FIG. 7, in which its spout 62 prevents any axial movement of the stop 41 (and therefore of the control pin 39).
  • the slide 37 blocks the locking finger 58 in this position, and this throughout the delay time as well as when the device is in the armed position shown in FIG. 7. It is therefore no longer possible to exert traction on the control rod 39, which eliminates the risk of seeing a new traction cause a shift in the time delay which could lead to a modification of the delay times, or even to an immediate passage into the armed position.
  • the timing gear train comprises at least two superposed coaxial wheels, one driven by the rack 38 of the slide and the other driving the primer rotor.
  • the wheel driven by the rack is braked by the timing gear train. It comprises a sector devoid of teeth (not shown) which makes it possible to disengage the time delay when the slide is in a position close to the position shown in FIG. 7.
  • This arrangement ensures rapid passage of the rotor to its armed position at the end of the time delay.
  • the correct position of the rotor is ensured by the presence of the second locking lever 13, the spout 14 of which acts as a stop for the rotor which, for this purpose, carries a stop tooth 68 on its periphery.
  • the armed position of the rotor is shown in Figure 7.
  • the primer 4 is aligned with the opening 67 of the housing and with the explosive charge of the mine.
  • the mine awaits the passage of a target which will cause the initiation of the primer by means of a detection device of known type and not described here.
  • the motor spring 36 pushes the slide 37 and causes the rotor 3 to pass instantaneously into the safety position (position in FIG. 2).
  • the shift is instantaneous due to the disengagement described above of the gear train, disengagement which occurred at the end of the delay period.
  • the slider 37 resumes at the same time its position of FIG. 2 in which it has tilted the locking finger in the release position of the stop 41.
  • the displacement of the slider has also caused the return of the first lock 5 of the rotor by the cooperation of the stud 53 with the profile 54. This lock again ensures that the rotor is blocked when the latter has returned to its safety position.
  • the second rotor lock pushed by its spring 16 resumes also its blocking position.
  • the device therefore regains all of its initial security functions and can be used again with the same level of security and reliability.
  • the device according to the invention thus allows an indefinite number of successive re-uses of the mine while each time retaining the same level of security and reliability.
  • Neutralization of the mine can also be triggered remotely or it can intervene automatically at the end of a lifetime programmed in the mine electronics.
  • the electromagnet 29 will be controlled and will release the second lock 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Control Devices (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Lock And Its Accessories (AREA)
  • Toys (AREA)

Abstract

A safety and arming mechanism for a munition, especially a mine, consists of a clockwork timer (33) which is armed by the operation of a control rod (39) with a primer. The control rod slides in the safety/arming mechanism housing and has a locking mechanism (41,58) which is activated when the rod is pulled. The locking mechanism comprises a stop (41) fixed to the control rod and interacting with a peg (58) pivoted to the housing and capable of occupying locking and release positions. The mechanism also incorporates a return spring (45) which returns the stop and rod to their retracted positions once the rod has been pulled. The clockwork timer is actuated by a slider (37) pushed by a drive member (36) and able to move freely relative to the rod (39) and driven by the stop (41) when the rod is pulled.

Description

Le domaine technique de l'invention est celui des dispositifs de sécurité et d'armement pour munitions et en particulier pour mines à action horizontale.The technical field of the invention is that of security and arming devices for ammunition and in particular for mines with horizontal action.

Il est connu de définir un dispositif de sécurité et d'armement dans lequel un système porte amorce passe d'une position de sécurité à une position armée par l'action d'un système de temporisation horlogère. Il est également connu d'assurer le mouvement de cette temporisation au moyen d'un ressort qui n'est pas maintenu à l'état bandé pendant le stockage mais qui est comprimé au moment de l'armement.It is known to define a security and arming device in which a primer carrier system passes from a security position to an armed position by the action of a timed timing system. It is also known to ensure the movement of this time delay by means of a spring which is not maintained in the banded state during storage but which is compressed at the time of arming.

Le brevet US2789508 décrit un tel dispositif de sécurité, dans lequel c'est l'inertie d'accélération communiquée à la munition qui comprime le ressort.Patent US2789508 describes such a safety device, in which it is the acceleration inertia communicated to the munition which compresses the spring.

Ce dispositif est conçu pour une munition tirée par une arme mais il peut être utilisé dans une munition posable à la main, telle une mine.This device is designed for ammunition fired by a weapon but it can be used in ammunition posable by hand, such as a mine.

Cependant il se pose alors le problème de la fiabilité de l'armement et en particulier de la reproductibilité de la durée de temporisation.However, there then arises the problem of the reliability of the arming and in particular of the reproducibility of the delay time.

En effet, l'armement du ressort actionnant la chronométrie n'est plus alors obtenu par des efforts d'environnement (tels l'accélération) mais doit être réalisé par l'opérateur lui même qui agira sur un moyen d'armement, tel une tige ou un bouton (le brevet FR2662242 décrit ainsi un moyen d'armement constitué par un bouton rotatif).Indeed, the arming of the spring actuating the chronometry is no longer then obtained by environmental forces (such as acceleration) but must be carried out by the operator himself who will act on an arming means, such as a rod or button (patent FR2662242 thus describes an arming means constituted by a rotary button).

Il existe alors un risque de voir l'opérateur effectuer plusieurs manipulations successives du moyen d'armement, ce qui peut provoquer un décalage du système horloger modifiant la valeur de la temporisation.There is then a risk of the operator carrying out several successive manipulations of the arming means, which can cause a shift in the clock system modifying the value of the time delay.

D'autre part, les mines terrestres actuelles sont le plus souvent dotées d'un dispositif de neutralisation qui permet leur relevage par les troupes amies.On the other hand, current land mines are most often equipped with a neutralization device which allows their recovery by friendly troops.

Pour des raisons de sécurité, il est alors souhaitable que le moyen d'armement ne puisse pas être manipulé par à l'opérateur lors du relevage.For security reasons, it is then desirable that the arming means cannot be handled by the operator during lifting.

C'est le but de l'invention que de proposer un dispositif de sécurité et d'armement ne présentant pas de tels inconvénients.It is the object of the invention to propose a security and arming device which does not have such drawbacks.

Le dispositif selon l'invention permet ainsi d'assurer la fiabilité du fonctionnement de la chronométrie en interdisant toute action sur le moyen de commande à l'issue de l'armement.The device according to the invention thus makes it possible to ensure the reliability of the operation of the chronometry by prohibiting any action on the control means at the end of the arming.

Ainsi l'invention a pour objet un dispositif de sécurité et d'armement pour une munition, notamment une mine, comportant un système de temporisation horlogère qui est armé par le déplacement d'un moyen de commande et qui provoque le passage d'un système porte amorce d'une position de sécurité à une position armée, dispositif caractérisé en ce que le moyen de commande est constitué par une tige montée de façon coulissante dans un corps du dispositif et en ce que le dispositif comporte des moyens de verrouillage en translation de la tige de commande, moyens qui sont activés consécutivement à la traction de cette dernière.Thus, the subject of the invention is a security and arming device for a munition, in particular a mine, comprising a timepiece timing system which is armed by the movement of a control means and which causes the passage of a system. door initiator from a safety position to an armed position, device characterized in that the control means is constituted by a rod slidably mounted in a body of the device and in that the device comprises means for locking in translation of the control rod, means which are activated following the traction of the latter.

Selon une caractéristique essentielle de l'invention, le dispositif comprend une butée, solidaire en translation avec la tige et destinée à coopérer avec un doigt monté pivotant par rapport au corps, doigt pouvant occuper au moins deux positions, une position de verrouillage en translation de la tige et une position de libération de la tige.According to an essential characteristic of the invention, the device comprises a stop, integral in translation with the rod and intended to cooperate with a finger mounted to pivot relative to the body, finger able to occupy at least two positions, a position for locking in translation of the rod and a rod release position.

Le dispositif de sécurité et d'armement pourra comporter au moins un ressort de rappel ramenant la butée et la tige dans une position rétractée initiale après la traction de la tige.The security and arming device may include at least one return spring bringing the stop and the rod to an initial retracted position after the rod has been pulled.

Le système de temporisation horlogère sera avantageusement actionné par un coulisseau poussé par des moyens moteurs, le coulisseau étant libre en translation par rapport à la tige et se trouvant entraîné en translation par la butée lors de la traction de la tige.The clock timing system will advantageously be actuated by a slider pushed by motor means, the slider being free in translation relative to the rod and being driven in translation by the stop when the rod is pulled.

Selon une autre caractéristique de l'invention, le coulisseau porte une extension coopérant, lorsqu'il se translate poussé par les moyens moteurs, avec un profil de came solidaire du doigt de verrouillage pour assurer d'une part le passage de ce dernier en position de verrouillage et d'autre part le maintien du doigt dans cette position pendant la partie du mouvement de translation du coulisseau qui assure le passage du système porte amorce de sa position de sécurité à sa position armée.According to another characteristic of the invention, the slide carries an cooperating extension, when it translates pushed by the motor means, with a cam profile secured to the locking finger to ensure on the one hand the passage of the latter in position locking and secondly maintaining the finger in this position during the part of the translational movement of the slide which ensures the passage of the primer holder system from its position security at its armed position.

Le système porte amorce pourra être maintenu dans une position de sécurité par au moins deux verrous, un premier verrou étant libéré consécutivement à la traction de la tige de commande.The primer holder system can be kept in a safety position by at least two locks, a first lock being released following the traction of the control rod.

Selon un mode particulier de réalisation, le premier verrou est constitué par un premier levier monté pivotant par rapport au corps, le pivotement du levier étant provoqué par l'action d'un téton solidaire du coulisseau.According to a particular embodiment, the first lock is constituted by a first lever mounted to pivot relative to the body, the pivoting of the lever being caused by the action of a stud secured to the slide.

Le dispositif de sécurité et d'armement pourra comporter un deuxième verrou qui est dégagé du système porte amorce par une action sur un organe de déclenchement.The security and arming device may include a second lock which is released from the primer holder system by an action on a triggering member.

Le deuxième verrou sera alors avantageusement constitué par un deuxième levier monté pivotant par rapport au corps et poussé vers le système porte amorce par un ressort de rappel, le deuxième levier coopérant avec une surface de butée du système porte amorce de façon à verrouiller ce dernier lorsqu'il occupe une position armée.The second lock will then advantageously consist of a second lever mounted to pivot relative to the body and pushed towards the primer holder system by a return spring, the second lever cooperating with an abutment surface of the primer holder system so as to lock the latter when 'he occupies an armed position.

Lorsque le système porte amorce occupe sa position armée, le coulisseau se trouvera de préférence maintenu par la temporisation horlogère dans sa position d'immobilisation du doigt de verrouillage de la tige de commande.When the primer holder system occupies its armed position, the slider will preferably be held by the watchmaking timer in its position of immobilization of the locking finger of the control rod.

Selon une autre caractéristique, la tige de commande pourra porter un bouton de manoeuvre permettant de la faire tourner relativement au corps de dispositif et de lui donner au moins deux positions différentes, une position de stockage et une position de fonctionnement, le dispositif comportant également une came de blocage liée en rotation à la tige de commande et coopérant avec une lumière du corps pour interdire toute translation de la tige de commande lorsqu'elle se trouve en position de stockage.According to another characteristic, the control rod may carry an operating button making it possible to rotate it relative to the device body and to give it at least two different positions, a storage position and an operating position, the device also comprising a locking cam linked in rotation to the control rod and cooperating with a body lumen to prevent any translation of the control rod when it is in the storage position.

Lorsque le dispositif est disposé dans un boîtier constituant une enceinte étanche isolée de l'atmosphère par des joints, la tige portera avantageusement à une extrémité externe une soupape comprenant un cylindre pouvant coulisser par rapport à un piston axial, la traction de la tige provoquant un déplacement relatif du cylindre et du piston qui provoque une rupture de l'étanchéité entre le cylindre et le piston et un équilibrage des pressions entre l'intérieur du boîtier et l'extérieur.When the device is placed in a housing constituting a sealed enclosure isolated from the atmosphere by seals, the rod will advantageously carry at an external end a valve comprising a cylinder which can slide relative to an axial piston, the traction of the rod causing a relative displacement of the cylinder and the piston which causes a rupture of the seal between the cylinder and the piston and a pressure balancing between the inside of the case and the outside.

Selon d'autres avantages de l'invention, le dispositif proposé permet d'assurer un passage fiable en position d'armement avec des durées de temporisation reproductibles.According to other advantages of the invention, the proposed device makes it possible to ensure a reliable passage into the arming position with reproducible delay times.

Il assure également une neutralisation fiable avec un retour du dispositif à sa position de sécurité initiale. Le dispositif pouvant alors être réutilisé indéfiniment.It also ensures reliable neutralization with the device returning to its initial safety position. The device can then be reused indefinitely.

D'autres avantages apparaîtront à la lecture d'un mode particulier de réalisation de l'invention, mode de réalisation décrit en référence aux dessins annexés et dans lesquels:

  • la figure 1 est une vue de dessus, couvercle retiré, d'un dispositif de sécurité et d'armement selon l'invention,
  • la figure 2 est une vue de dessus du dispositif, représenté en coupe partielle en position de sécurité et sans les leviers de verrouillage du système porte amorce,
  • la figure 3 est une vue partielle de l'extrémité du premier levier de verrouillage,
  • la figure 4 est une coupe de la figure 1 suivant le plan AA,
  • la figure 4a est un coupe partielle de la figure 4 suivant le plan BB, coupe montrant le coulisseau et la came de blocage,
  • la figure 5 est une représentation schématique partielle du dispositif dans une position dans laquelle la tige de commande est tirée au maximum,
  • la figure 6 représente le dispositif lorsque la tige est relâchée,
  • la figure 7 représente le dispositif dans la position armée du système porte amorce.
Other advantages will appear on reading a particular embodiment of the invention, embodiment described with reference to the appended drawings and in which:
  • FIG. 1 is a top view, cover removed, of a security and arming device according to the invention,
  • FIG. 2 is a top view of the device, shown in partial section in the safety position and without the locking levers of the primer holder system,
  • FIG. 3 is a partial view of the end of the first locking lever,
  • FIG. 4 is a section of FIG. 1 along the plane AA,
  • FIG. 4a is a partial section of FIG. 4 along the plane BB, section showing the slide and the locking cam,
  • FIG. 5 is a partial schematic representation of the device in a position in which the control rod is pulled as far as possible,
  • FIG. 6 represents the device when the rod is released,
  • Figure 7 shows the device in the armed position of the primer holder system.

Si on se reporte à la figure 1, un dispositif de sécurité et d'armement 1 selon l'invention est constitué par un boîtier 2 destiné à être fixé à la mine et à l'intérieur duquel est disposé un rotor 3 portant une amorce 4.Referring to Figure 1, a safety and arming device 1 according to the invention consists of a housing 2 intended to be fixed to the mine and inside which is disposed a rotor 3 carrying a primer 4 .

Ce rotor 3 peut tourner autour d'un axe 21 perpendiculaire au plan de la figure 1 et il est immobilisé dans sa position de sécurité (qui est celle représentée aux figures 1 à 3) par deux verrous.This rotor 3 can rotate about an axis 21 perpendicular to the plane of Figure 1 and it is immobilized in its safety position (which is that shown in Figures 1 to 3) by two locks.

Lorsque le rotor se trouve dans sa position armée, l'amorce 4 est en regard et alignée axialement avec une ouverture 67 aménagée dans le boîtier, ouverture qui communique avec une charge explosive de la mine (non représentée).When the rotor is in its armed position, the primer 4 is opposite and axially aligned with an opening 67 arranged in the housing, opening which communicates with an explosive charge of the mine (not shown).

L'amorce est à initiation électrique, son initiation sera provoquée par un détecteur de cible de type connu non représenté, par exemple un capteur infra rouge. Un certain nombre de contacts et sécurités électriques sont prévus dans le dispositif. Ils ne sont pas décrits ni représentés ici car ils ne font pas partie de la présente invention.The primer is electrically initiated, its initiation will be caused by a target detector of known type not shown, for example an infrared sensor. A number of electrical contacts and safeties are provided in the device. They are not described or shown here since they do not form part of the present invention.

Un premier verrou 5 du rotor est constitué par un premier levier monté pivotant par rapport au corps du boîtier.A first lock 5 of the rotor is constituted by a first lever mounted to pivot relative to the body of the housing.

Ce levier pivote autour d'un axe 6, il a une forme générale en L et comporte un bec 7 (voir figure 3) qui s'engage dans un cran 8 du rotor 3.This lever pivots around an axis 6, it has a general L shape and has a spout 7 (see FIG. 3) which engages in a notch 8 of the rotor 3.

Le bec 7 est poussé vers le rotor par l'action d'un ressort de compression 9 qui prend appui, d'une part sur une barrette support 10 solidaire du corps de dispositif, et d'autre part sur un repli 11 du premier levier 5. Des tétons de centrage 12a,12b sont prévus pour assurer un maintien du ressort au cours des déplacement du levier.The spout 7 is pushed towards the rotor by the action of a compression spring 9 which bears, on the one hand on a support bar 10 secured to the device body, and on the other hand on a fold 11 of the first lever 5. Centering pins 12a, 12b are provided to maintain the spring during movement of the lever.

Le premier levier 5 porte sur une face inférieure (voir figure 1) un profil 54 (en forme de "L") qui coopère avec un téton 53 porté par un coulisseau mobile 37. Le déplacement du coulisseau 37 provoque le pivotement du premier levier 5. Le téton 53 du coulisseau assurant le maintien du levier dans sa position de verrouillage du rotor 3.The first lever 5 carries on a lower face (see FIG. 1) a profile 54 (in the shape of an "L") which cooperates with a stud 53 carried by a movable slide 37. The displacement of the slide 37 causes the pivot of the first lever 5 The pin 53 of the slide ensuring the maintenance of the lever in its locking position of the rotor 3.

Le rotor 3 est également maintenu en position de sécurité par un deuxième verrou 13 qui est constitué par un deuxième levier ayant une forme générale en L et monté pivotant par rapport au corps autour du même axe 6 que le premier levier 5.The rotor 3 is also held in the safety position by a second lock 13 which is constituted by a second lever having a general L-shape and mounted pivoting relative to the body around the same axis 6 as the first lever 5.

Ce deuxième levier 13 comporte un bec 14 (voir figure 1) qui s'engage dans une encoche 15 du rotor 3. Il est maintenu engagé dans l'encoche 15 du rotor par l'action d'un autre ressort de compression 16 qui, lui aussi, prend appui d'un côté sur une barrette support 17 solidaire du corps de dispositif et de l'autre côté sur une face 22 du levier 13.This second lever 13 includes a spout 14 (see FIG. 1) which engages in a notch 15 of the rotor 3. It is kept engaged in the notch 15 of the rotor by the action of another compression spring 16 which, he too is supported by a side on a support bar 17 secured to the device body and on the other side on a face 22 of the lever 13.

Des tétons de centrage 18a,18b assurent le maintien du ressort 16 au cours des déplacements du deuxième levier.Centering pins 18a, 18b maintain the spring 16 during the movements of the second lever.

Sur la figure 1, le premier levier 5 se trouve en dessous du deuxième levier 13.In FIG. 1, the first lever 5 is located below the second lever 13.

L'axe de rotation 6 et les axes de maintien des barrettes 10 et 17 sont fixés sur une platine 19, elle même rendue solidaire du boîtier par des vis 20.The axis of rotation 6 and the pins for holding the bars 10 and 17 are fixed on a plate 19, itself made integral with the housing by screws 20.

Le deuxième levier 13 peut être dégagé du rotor 3 par une action manuelle sur un organe de déclenchement constitué par une tirette 23. La tirette comporte un axe 24, dont une extrémité élargie 25 est positionnée dans un logement 26 aménagé à l'extrémité d'un premier bras 13a du deuxième levier 13. L'autre extrémité de l'axe 24 porte un bouton de manoeuvre 27. Un ressort de compression 28 pousse la tirette vers le deuxième levier 13 et la maintient dans la position représentée à la figure 1.The second lever 13 can be released from the rotor 3 by manual action on a triggering member constituted by a pull tab 23. The pull tab has a pin 24, one enlarged end 25 of which is positioned in a housing 26 arranged at the end of a first arm 13a of the second lever 13. The other end of the axis 24 carries an operating button 27. A compression spring 28 pushes the zipper towards the second lever 13 and maintains it in the position shown in FIG. 1.

Le deuxième levier 13 peut également être dégagé du rotor 3 au moyen d'un électroaimant 29 dont une extrémité de la tige 30 est positionnée dans un logement 31 aménagé à l'extrémité du deuxième bras 13b du deuxième levier 13.The second lever 13 can also be released from the rotor 3 by means of an electromagnet 29, one end of the rod 30 of which is positioned in a housing 31 arranged at the end of the second arm 13b of the second lever 13.

La figure 2 montre le dispositif de sécurité et d'armement selon l'invention après retrait de la platine 19 portant les leviers de verrouillage 13 et 5 et le rotor porte amorce 3, et retrait d'une plaque entretoise 52 (cf figure 4).Figure 2 shows the safety and arming device according to the invention after removal of the plate 19 carrying the locking levers 13 and 5 and the primer carrier rotor 3, and removal of a spacer plate 52 (see Figure 4) .

Une deuxième platine 32 apparaît et elle est également vissée au corps du boîtier.A second plate 32 appears and it is also screwed to the body of the housing.

Cette deuxième platine maintient le système de temporisation horlogère 33 qui est d'un type connu et ne sera pas décrit en détail. Ce système comprend un certain nombre de roues dentées, la première roue 34 (ou roue motrice) reçoit l'énergie mécanique fournie par un ressort de compression 36 poussant le coulisseau 37 qui porte une crémaillère 38. La dernière roue 35 (ou roue d'entraînement) est solidaire du rotor porte amorce. Un train d'engrenage freine la rotation de la roue motrice et assure la temporisation souhaitée.This second plate maintains the clock timing system 33 which is of a known type and will not be described in detail. This system includes a number of toothed wheels, the first wheel 34 (or drive wheel) receives the mechanical energy supplied by a compression spring 36 pushing the slide 37 which carries a rack 38. The last wheel 35 (or wheel of drive) is integral with the primer carrier rotor. A gear train brakes the rotation of the drive wheel and ensures the desired delay.

La deuxième platine 32 est partiellement retirée sur la figure 2 pour montrer de façon plus claire le moyen de commande du dispositif. On se reportera également à la figure 4 pour la description du moyen de commande.The second plate 32 is partially removed in Figure 2 to show more clearly the control means of the device. Reference will also be made to FIG. 4 for the description of the control means.

Ce moyen de commande comprend une tige de commande 39 qui s'étend sur sensiblement toute la longueur du boîtier. La tige de commande porte à son extrémité externe un bouton de commande 40 et à son autre extrémité (interne au boîtier) une butée mobile 41.This control means comprises a control rod 39 which extends over substantially the entire length of the housing. The control rod carries at its external end a control button 40 and at its other end (internal to the housing) a movable stop 41.

La butée 41 est rendue solidaire de la tige 39 au moyen d'un écrou 42 (voir figure 4). La butée 41 comporte un alésage 43 monté coulissant sur une tige de guidage 44 solidaire du boîtier. Un ressort de compression 45 est monté coaxialement à la tige 44, il a pour effet de repousser la butée (et la tige de commande 39 qui lui est liée) dans la position représentée aux figures 2 et 4.The stop 41 is made integral with the rod 39 by means of a nut 42 (see FIG. 4). The stop 41 has a bore 43 slidably mounted on a guide rod 44 secured to the housing. A compression spring 45 is mounted coaxially with the rod 44, it has the effect of pushing the stop (and the control rod 39 which is linked to it) into the position shown in FIGS. 2 and 4.

Le coulisseau 37 est monté libre en translation sur la tige de commande 39. Il est poussé vers la butée 41 par le ressort moteur 36 qui prend appui, d'une part sur une rondelle de maintien 46 solidaire du boîtier et d'autre part sur un lamage 47 de l'alésage interne 48 du coulisseau 37.The slide 37 is mounted free in translation on the control rod 39. It is pushed towards the stop 41 by the motor spring 36 which bears, on the one hand on a retaining washer 46 secured to the housing and on the other hand on a counterbore 47 of the internal bore 48 of the slide 37.

Le ressort 36 est guidé par une douille 49 coaxiale à la tige de commande. Le coulisseau 37 comporte une fenêtre 50 à l'intérieur de laquelle est positionnée une came de blocage 51 qui est liée en rotation à la tige de commande 39 mais qui, entraînée par le coulisseau, peut se translater par rapport à la tige 39.The spring 36 is guided by a sleeve 49 coaxial with the control rod. The slider 37 has a window 50 inside which is positioned a locking cam 51 which is linked in rotation to the control rod 39 but which, driven by the slider, can translate relative to the rod 39.

Afin d'assurer cette liaison en rotation, la tige de commande a une section carrée et porte notamment deux méplats 39a,39b qui s'étendent sur toute sa longueur (Cf la figure 4a pour le détail de montage de la came 51 sur la tige). La fonction de cette came de blocage sera précisée par la suite.In order to ensure this connection in rotation, the control rod has a square section and in particular carries two flats 39a, 39b which extend over its entire length (see FIG. 4a for the mounting detail of the cam 51 on the rod ). The function of this blocking cam will be explained below.

Le coulisseau 37 porte sur sa face supérieure le téton 53 cité précédemment. Celui-ci circule dans des rainures longitudinales 55, 56, 57 aménagées respectivement sur les platines 32, 19 et sur l'entretoise 52.The slide 37 carries on its upper face the stud 53 cited above. This circulates in longitudinal grooves 55, 56, 57 arranged respectively on the plates 32, 19 and on the spacer 52.

Le téton 53 coopère avec la surface du profil 54 qui est solidaire du premier levier de verrouillage 5 (voir figure 1) de façon à entraîner le premier levier 5 et à le dégager ou l'engager dans le cran 8 du rotor porte amorce.The stud 53 cooperates with the surface of the profile 54 which is integral with the first locking lever 5 (see FIG. 1) so as to drive the first lever 5 and to release it or engage it in the notch 8 of the primer holder rotor.

En se reportant à la figure 2, le corps de boîtier porte également un doigt 58 monté pivotant par rapport au corps autour d'un axe 59. Ce doigt peut occuper au moins deux positions angulaires extrêmes correspondant à sa mise en butée sur un axe 60 au niveau d'un dégagement cylindrique 61.Referring to Figure 2, the housing body also carries a finger 58 pivotally mounted relative to the body about an axis 59. This finger can occupy at least two extreme angular positions corresponding to its abutment on an axis 60 at a cylindrical clearance 61.

Le doigt 58 présente un bec 62 qui est destiné à coopérer avec un bec complémentaire 63 porté par la butée 41, de façon à verrouiller en translation la tige de commande 39 par l'intermédiaire de la butée 41.The finger 58 has a spout 62 which is intended to cooperate with a complementary spout 63 carried by the stop 41, so as to lock in translation the control rod 39 by means of the stop 41.

Le coulisseau comporte une extension 65 qui coopère avec un profil de came 64 solidaire du doigt 58, de façon à provoquer le changement de position de ce dernier lors de la translation du coulisseau.The slider has an extension 65 which cooperates with a cam profile 64 integral with the finger 58, so as to cause the position of the latter to change during the translation of the slider.

Le boîtier du dispositif constitue une fois fermé une enceinte étanche qui est isolée de l'atmosphère par des joints. Une telle disposition améliore la tenue du dispositif aux stockages de longue durée.Once the device is closed, it forms a sealed enclosure which is isolated from the atmosphere by seals. Such an arrangement improves the resistance of the device to long-term storage.

Les conditions de températures extrêmes peuvent créer un différentiel de pression entre l'intérieur du boîtier et l'extérieur. Un tel différentiel risque de gêner la manoeuvre de la tige de commande.Extreme temperature conditions can create a pressure differential between the inside of the case and the outside. Such a differential may interfere with the operation of the control rod.

Afin de pallier cet inconvénient, la tige de commande 39 porte à son extrémité externe une soupape 69 qui comprend un cylindre 70 solidaire du bouton de commande 40 et pouvant coulisser sur une faible longueur (1 à 2 mm) par rapport à un piston axial 71 solidaire de la tige 39 (voir figure 1).In order to overcome this drawback, the control rod 39 carries at its external end a valve 69 which comprises a cylinder 70 integral with the control button 40 and which can slide over a short length (1 to 2 mm) relative to an axial piston 71 integral with rod 39 (see Figure 1).

Lorsque l'intérieur du boîtier se trouve en surpression par rapport à l'extérieur, la soupape fonctionne automatiquement et équilibre les pressions.When the interior of the housing is overpressure relative to the exterior, the valve operates automatically and balances the pressures.

Lorsque l'intérieur du boîtier se trouve en dépression, c'est l'utilisateur qui, en tirant la tige de commande 39, va actionner la soupape et réaliser l'équilibrage des pressions.When the interior of the housing is in depression, it is the user who, by pulling the control rod 39, will actuate the valve and achieve pressure balancing.

Du point de vue du montage du bouton 40, un soufflet souple 72 est prévu entre le bouton 40 et le corps 2 de boîtier, cela afin d'assurer une étanchéité à l'humidité quelle que soit la position de la tige 39.From the point of view of the mounting of the button 40, a flexible bellows 72 is provided between the button 40 and the housing body 2, this in order to ensure a moisture-tightness whatever the position of the rod 39.

L'étanchéité entre le cylindre 70 et le piston 71 de la soupape est assurée par un ou plusieurs joints toriques. La translation relative du cylindre par rapport au piston, permet de dégager au moins un joint torique de sa surface de contact, il en résulte un jeu radial de quelques dixièmes de mm entre cylindre et piston, jeu qui suffit à assurer l'équilibrage des pressions.The seal between the cylinder 70 and the piston 71 of the valve is ensured by one or more O-rings. The relative translation of the cylinder with respect to the piston makes it possible to free at least one O-ring from its contact surface, this results in a radial play of a few tenths of mm between cylinder and piston, play which is sufficient to ensure pressure balancing .

Le fonctionnement de ce dispositif va maintenant être décrit en référence aux figures 2 et 5 à 7.The operation of this device will now be described with reference to FIGS. 2 and 5 to 7.

Le rotor porte amorce a également été dessiné sur les figures 5 à 7 afin de préciser pour chaque état du dispositif quelle est la position correspondante du rotor.The initiator rotor has also been drawn in FIGS. 5 to 7 in order to specify for each state of the device what is the corresponding position of the rotor.

La figure 2 montre le dispositif dans sa position de sécurité de stockage. Le rotor porte amorce est immobilisé par deux verrous et la tige de commande se trouve également bloquée en translation en raison de la position active de la came de blocage 51. En effet, comme cela est plus particulièrement visible sur les figures 4 et 4a, la came 51 occupe par rapport au coulisseau 37 une position angulaire telle que son extrémité élargie 51a pénètre dans une lumière rectangulaire 66 aménagée sur la platine 32. Lorsque l'on exerce une traction sur la tige de commande 39, la came 51 vient en butée contre la platine 32 et interdit donc toute translation de la tige de commande.Figure 2 shows the device in its storage safety position. The initiator rotor is immobilized by two locks and the control rod is also blocked in translation due to the active position of the locking cam 51. In fact, as is more particularly visible in FIGS. 4 and 4a, the cam 51 occupies with respect to the slide 37 an angular position such that its enlarged end 51a penetrates into a rectangular opening 66 arranged on the plate 32. When a traction is exerted on the control rod 39, the cam 51 abuts against the plate 32 and therefore prohibits any translation of the control rod.

Comme cela a été précisé précédemment, le premier levier 5 se trouve immobilisé dans sa position de verrouillage du rotor 3 par la coopération du téton 53 du coulisseau 37 avec le profil 54 du premier levier 5.As stated above, the first lever 5 is immobilized in its locking position of the rotor 3 by the cooperation of the stud 53 of the slide 37 with the profile 54 of the first lever 5.

Dans la position de sécurité de stockage le ressort moteur 36 n'est pas comprimé, aucune énergie n'est donc stockée dans le système, ce qui accroît la fiabilité du dispositif.In the storage safety position the mainspring 36 is not compressed, no energy is therefore stored in the system, which increases the reliability of the device.

Pour armer le dispositif, l'utilisateur commence par tourner le bouton de commande 40 de 90°. Cette action a pour effet de faire pivoter la came de blocage 51 qui se loge alors totalement dans le coulisseau 37 et n'interfère plus avec la platine 32. Une traction de la tige de commande devient alors possible.To arm the device, the user begins by turning the control knob 40 by 90 °. This action has the effect of rotating the locking cam 51 which is then completely housed in the slide 37 and no longer interferes with the plate 32. Traction of the control rod then becomes possible.

La figure 5 montre schématiquement le dispositif lorsque la tige de commande 39 est complètement tirée.Figure 5 shows schematically the device when the control rod 39 is fully pulled.

La traction de la tige 39 par l'opérateur a entraîné le déplacement de la butée 41, celui du coulisseau 37 et la compression du ressort moteur 36.The traction of the rod 39 by the operator has caused the displacement of the stop 41, that of the slide 37 and the compression of the mainspring 36.

Dans le même temps la butée 41 a comprimé le ressort de rappel 45.At the same time the stop 41 has compressed the return spring 45.

Le doigt de verrouillage 58 a été basculé (suivant la direction F) de sa position initiale à sa deuxième position par le passage de l'extension 65 du coulisseau 37 sur le profil de came 64 du doigt 58.The locking finger 58 has been tilted (in the direction F) from its initial position to its second position by the passage of the extension 65 of the slide 37 on the cam profile 64 of the finger 58.

Le déplacement du coulisseau 37 provoque également le dégagement du premier verrou du rotor porte amorce par l'action du téton 53. Le profil 54 est défini de telle sorte que ce dégagement n'intervienne que lorsque le coulisseau 37 arrive à quelques millimètres de sa position extrême.The displacement of the slide 37 also causes the release of the first lock of the initiator rotor by the action of the stud 53. The profile 54 is defined so that this release only occurs when the slide 37 arrives a few millimeters from its position extreme.

Le deuxième verrou 13 est toujours engagé dans le rotor qui reste donc en position de sécurité.The second lock 13 is still engaged in the rotor which therefore remains in the safety position.

La figure 6 montre le dispositif une fois que la tige de commande a été relâchée. La butée 41, poussée par le ressort de rappel 45, reprend sa position initiale et entraîne la tige de commande 39. La butée repousse au passage le doigt de verrouillage 58 suivant la direction G, ce dernier n'étant pas encore bloqué par le coulisseau 37.Figure 6 shows the device after the control rod has been released. The stop 41, pushed by the return spring 45, returns to its initial position and drives the control rod 39. The stop pushes the locking finger 58 in the direction G in passing, the latter not yet being blocked by the slide 37.

Le ressort moteur 36 exerce une poussée sur le coulisseau 37, mais le deuxième verrou 13 étant encore engagé dans le rotor, le coulisseau reste bloqué par la temporisation horlogère 33 dans la position représentée à la figure 6.The mainspring 36 exerts a thrust on the slider 37, but the second lock 13 still being engaged in the rotor, the slider remains blocked by the time delay 33 in the position shown in FIG. 6.

Lorsque la mine doit être armée, l'utilisateur exerce une traction sur la tirette 23 (figure 1). Cette action dégage le deuxième verrou 13 et libère le rotor porte amorce qui commence aussitôt à tourner, entraîné par la temporisation horlogère 33 qui est actionnée par le coulisseau 37.When the mine must be armed, the user pulls on the pull tab 23 (Figure 1). This action releases the second latch 13 and frees the primer-carrying rotor which immediately begins to rotate, driven by the watchmaking time delay 33 which is actuated by the slide 37.

L'action sur la tirette pourra être remplacée par une action de l'électroaimant 29, commandé à distance, par exemple par une télécommande radio.The action on the zipper can be replaced by an action of the electromagnet 29, controlled remotely, for example by a radio remote control.

On remarquera que la temporisation ne peut être libérée que si les deux verrous du rotor sont libérés, or le premier verrou a une position du profil 54 (fig 1) telle qu'il ne se trouve libéré par le téton 53 du coulisseau que lorsque ce dernier est à 1 ou 2 millimètres de la position représentée figure 5 (soit celle correspondant à la traction maximale pour la tige).Note that the timer cannot be released that if the two locks of the rotor are released, or the first lock has a position of the profile 54 (fig 1) such that it is only released by the stud 53 of the slide only when the latter is 1 or 2 millimeters from the position shown in Figure 5 (ie that corresponding to the maximum traction for the rod).

Cette disposition assure que le dispositif ne peut être lancé que si le coulisseau a bien été déplacé de sa course maximale (figure 5) avec le ressort moteur comprimé au maximum. On évite ainsi des modifications de la durée de temporisation qui pourraient être dues à une mauvaise position initiale de la crémaillère du coulisseau par rapport à la temporisation horlogère.This arrangement ensures that the device can only be launched if the slide has been displaced from its maximum stroke (FIG. 5) with the motor spring compressed to the maximum. This avoids modifications to the delay time which could be due to an incorrect initial position of the slide rack with respect to the clock time delay.

Le déplacement du coulisseau provoque dès le début de la temporisation le basculement du doigt de verrouillage 58 suivant la direction F, en raison de l'action de l'extension 65 sur le profil de came 64. Le doigt adopte la position de verrouillage représentée figure 7, dans laquelle son bec 62 interdit tout déplacement axial de la butée 41 (et donc de l'axe de commande 39).The movement of the slide causes the locking finger 58 to tilt in the direction F from the start of the time delay, due to the action of the extension 65 on the cam profile 64. The finger adopts the locking position shown in FIG. 7, in which its spout 62 prevents any axial movement of the stop 41 (and therefore of the control pin 39).

Le coulisseau 37 bloque le doigt de verrouillage 58 dans cette position, et ce pendant toute la durée de temporisation ainsi que lorsque le dispositif se trouve dans la position armée représentée figure 7. Il n'est donc ainsi plus possible d'exercer une traction sur la tige de commande 39, ce qui élimine le risque de voir une nouvelle traction provoquer un décalage de la temporisation horlogère qui pourrait conduire à une modification des durées de temporisation, voire à un passage immédiat en position armée.The slide 37 blocks the locking finger 58 in this position, and this throughout the delay time as well as when the device is in the armed position shown in FIG. 7. It is therefore no longer possible to exert traction on the control rod 39, which eliminates the risk of seeing a new traction cause a shift in the time delay which could lead to a modification of the delay times, or even to an immediate passage into the armed position.

D'une façon connue et non représentée en détail, le train d'engrenage de temporisation comporte au moins deux roues coaxiales superposées, l'une entraînée par la crémaillère 38 du coulisseau et l'autre entraînant le rotor porte amorce.In a known manner and not shown in detail, the timing gear train comprises at least two superposed coaxial wheels, one driven by the rack 38 of the slide and the other driving the primer rotor.

La roue entraînée par la crémaillère se trouve freinée par le train d'engrenages de temporisation. Elle comporte un secteur dépourvu de dents (non représenté) qui permet de débrayer la temporisation lorsque le coulisseau se trouve à une position voisine de la position représentée figure 7.The wheel driven by the rack is braked by the timing gear train. It comprises a sector devoid of teeth (not shown) which makes it possible to disengage the time delay when the slide is in a position close to the position shown in FIG. 7.

Cette disposition assure un passage rapide du rotor à sa position armée à la fin de la temporisation. La position correcte du rotor est assurée par la présence du deuxième levier de verrouillage 13 dont le bec 14 joue le rôle de butée pour le rotor qui porte à cette fin une dent d'arrêt 68 sur sa périphérie.This arrangement ensures rapid passage of the rotor to its armed position at the end of the time delay. The correct position of the rotor is ensured by the presence of the second locking lever 13, the spout 14 of which acts as a stop for the rotor which, for this purpose, carries a stop tooth 68 on its periphery.

La position armée du rotor est représentée sur la figure 7. L'amorce 4 se trouve alignée avec l'ouverture 67 du boîtier et avec le chargement explosif de la mine.The armed position of the rotor is shown in Figure 7. The primer 4 is aligned with the opening 67 of the housing and with the explosive charge of the mine.

Dans cette position représentée figure 7, le ressort moteur 36 est encore comprimé. Le rotor 3, bloqué par le deuxième levier 13, immobilise également le coulisseau 37 par l'intermédiaire de la temporisation horlogère. Le coulisseau 37 bloque le doigt de verrouillage 58 qui interdit toute manipulation de la tige de commande 39.In this position shown in Figure 7, the motor spring 36 is still compressed. The rotor 3, blocked by the second lever 13, also immobilizes the slider 37 by means of the time delay. The slide 37 blocks the locking finger 58 which prevents any manipulation of the control rod 39.

La mine attend le passage d'une cible qui provoquera l'initiation de l'amorce par l'intermédiaire d'un dispositif de détection de type connu et non décrit ici.The mine awaits the passage of a target which will cause the initiation of the primer by means of a detection device of known type and not described here.

Lorsque l'on souhaite relever la mine à l'issue d'une certaine période, la seule action possible pour l'utilisateur est la traction de la tirette 23. Cette traction éloigne le bec 14 du deuxième levier 13 de sa position de blocage du rotor 3.When it is desired to raise the mine at the end of a certain period, the only possible action for the user is to pull the pull tab 23. This pull moves the spout 14 of the second lever 13 away from its position for blocking the rotor 3.

Le rotor n'étant plus immobilisé, le ressort moteur 36 pousse le coulisseau 37 et provoque le passage instantané du rotor 3 en position de sécurité (position de la figure 2). Le passage est instantané en raison du débrayage décrit précédemment du train d'engrenage, débrayage qui est intervenu à l'issue de la période de temporisation.As the rotor is no longer immobilized, the motor spring 36 pushes the slide 37 and causes the rotor 3 to pass instantaneously into the safety position (position in FIG. 2). The shift is instantaneous due to the disengagement described above of the gear train, disengagement which occurred at the end of the delay period.

Le coulisseau 37 reprend dans le même temps sa position de la figure 2 dans laquelle il a fait basculer le doigt de verrouillage en position de déblocage de la butée 41. Le déplacement du coulisseau a également provoqué le retour du premier verrou 5 du rotor par la coopération du téton 53 avec le profil 54. Ce verrou assure à nouveau un blocage du rotor lorsque celui-ci a repris sa position de sécurité.The slider 37 resumes at the same time its position of FIG. 2 in which it has tilted the locking finger in the release position of the stop 41. The displacement of the slider has also caused the return of the first lock 5 of the rotor by the cooperation of the stud 53 with the profile 54. This lock again ensures that the rotor is blocked when the latter has returned to its safety position.

La tirette 23 étant relâchée par l'utilisateur, le deuxième verrou de rotor poussé par son ressort 16 reprend lui aussi sa position de blocage. Le dispositif retrouve donc toutes ses fonctions de sécurité initiales et pourra être utilisé une nouvelle fois avec le même niveau de sécurité et de fiabilité.With the pull tab 23 released by the user, the second rotor lock pushed by its spring 16 resumes also its blocking position. The device therefore regains all of its initial security functions and can be used again with the same level of security and reliability.

Le dispositif selon l'invention permet ainsi un nombre indéfini de réutilisations successives de la mine tout en conservant à chaque fois le même niveau de sécurité et de fiabilité.The device according to the invention thus allows an indefinite number of successive re-uses of the mine while each time retaining the same level of security and reliability.

La neutralisation de la mine pourra également être provoquée à distance ou encore elle pourra intervenir automatiquement à l'issue d'une durée de vie programmée dans une électronique de la mine. Dans ce cas c'est l'électro-aimant 29 qui sera commandé et qui libérera le deuxième verrou 13.Neutralization of the mine can also be triggered remotely or it can intervene automatically at the end of a lifetime programmed in the mine electronics. In this case, the electromagnet 29 will be controlled and will release the second lock 13.

Claims (12)

Dispositif de sécurité et d'armement (1) pour une munition, notamment une mine, comportant un système de temporisation horlogère (33) qui est armé par le déplacement d'un moyen de commande et qui provoque le passage d'un système porte amorce (3) d'une position de sécurité à une position armée, dispositif caractérisé en ce que le moyen de commande est constitué par une tige (39) montée de façon coulissante dans un corps du dispositif et en ce que le dispositif comporte des moyens (41,58) de verrouillage en translation de la tige de commande (39), moyens qui sont activés consécutivement à la traction de cette dernière.Security and arming device (1) for a munition, in particular a mine, comprising a timepiece timing system (33) which is armed by the movement of a control means and which causes the passage of a primer holder system (3) from a safety position to an armed position, device characterized in that the control means consists of a rod (39) slidably mounted in a body of the device and in that the device comprises means ( 41, 58) of locking in translation of the control rod (39), means which are activated following the traction of the latter. Dispositif de sécurité et d'armement selon la revendication 1, caractérisé en ce que le dispositif comprend une butée (41), solidaire en translation avec la tige (39) et destinée à coopérer avec un doigt (58) monté pivotant par rapport au corps, doigt pouvant occuper au moins deux positions, une position de verrouillage en translation de la tige et une position de libération de la tige.Security and arming device according to claim 1, characterized in that the device comprises a stop (41), integral in translation with the rod (39) and intended to cooperate with a finger (58) pivotally mounted relative to the body , finger able to occupy at least two positions, a position for locking in translation of the rod and a position for releasing the rod. Dispositif de sécurité et d'armement selon la revendication 2, caractérisé en ce qu'il comporte au moins un ressort de rappel (45) ramenant la butée (41) et la tige (39) dans une position rétractée initiale après la traction de la tige.Security and arming device according to claim 2, characterized in that it comprises at least one return spring (45) returning the stop (41) and the rod (39) to an initial retracted position after the traction of the rod. Dispositif de sécurité et d'armement selon une des revendications 2 ou 3, caractérisé en ce que le système de temporisation horlogère (33) est actionné par un coulisseau (37) poussé par des moyens moteurs (36), le coulisseau étant libre en translation par rapport à la tige '39) et se trouvant entraîné en translation par la butée (41) lors de la traction de la tige.Security and arming device according to one of claims 2 or 3, characterized in that the clock timing system (33) is actuated by a slide (37) pushed by motor means (36), the slide being free in translation relative to the rod '39) and being driven in translation by the stop (41) during the traction of the rod. Dispositif de sécurité et d'armement selon la revendication 4, caractérisé en ce que le coulisseau (37) porte une extension (65) coopérant, lorsqu'il se translate poussé par les moyens moteurs, avec un profil de came (64) solidaire du doigt de verrouillage (58) pour assurer d'une part le passage de ce dernier en position de verrouillage et d'autre part le maintien du doigt dans cette position pendant la partie du mouvement de translation du coulisseau qui assure le passage du système porte amorce (3) de sa position de sécurité à sa position armée.Safety and arming device according to claim 4, characterized in that the slide (37) carries an extension (65) cooperating, when it is translated pushed by the motor means, with a cam profile (64) integral with the locking finger (58) to ensure on the one hand the passage of the latter in the locking position and on the other hand maintaining the finger in this position during the part of the translation movement of the slide which ensures the passage of the primer holder system (3) from its safety position to its armed position. Dispositif de sécurité et d'armement selon une des revendications 1 à 5, caractérisé en ce que le système porte amorce (3) est maintenu dans une position de sécurité par au moins deux verrous, un premier verrou étant libéré consécutivement à la traction de la tige de commande.Security and arming device according to one of claims 1 to 5, characterized in that the primer holder system (3) is held in a security position by at least two latches, a first lock being released following the pulling of the control rod. Dispositif de sécurité et d'armement selon la revendication 6, caractérisé en ce que le premier verrou est constitué par un premier levier (5) monté pivotant par rapport au corps, le pivotement du levier étant provoqué par l'action d'un téton (53) solidaire du coulisseau (37).Security and arming device according to claim 6, characterized in that the first lock is constituted by a first lever (5) pivotally mounted relative to the body, the pivoting of the lever being caused by the action of a stud ( 53) integral with the slide (37). Dispositif de sécurité et d'armement selon une des revendications à ou 7, caractérisé en ce qu'il comporte un deuxième verrou qui est dégagé du système porte amorce (3) par une action sur un organe de déclenchement.Security and arming device according to one of claims to or 7, characterized in that it comprises a second lock which is released from the primer holder system (3) by an action on a triggering member. Dispositif de sécurité et d'armement selon la revendication 8, caractérisé en ce que le deuxième verrou est constitué par un deuxième levier (13), monté pivotant par rapport au corps, et poussé vers le système porte amorce (3) par un ressort de rappel (16), le deuxième levier coopérant avec une surface de butée (68) du système porte amorce (3) de façon à verrouiller ce dernier lorsqu'il occupe une position armée.Security and arming device according to claim 8, characterized in that the second lock consists of a second lever (13), pivotally mounted relative to the body, and pushed towards the primer holder system (3) by a spring reminder (16), the second lever cooperating with an abutment surface (68) of the primer holder system (3) so as to lock the latter when it occupies an armed position. Dispositif de sécurité et d'armement selon les revendications 4 et 9, caractérisé en ce que lorsque le système porte amorce (3) occupe sa position armée, le coulisseau (37) se trouve maintenu par la temporisation horlogère (33) dans sa position d'immobilisation du doigt de verrouillage (58) de la tige de commande (39).Security and arming device according to claims 4 and 9, characterized in that when the primer carrier system (3) occupies its armed position, the slide (37) is held by the clock timer (33) in its position d immobilization of the locking finger (58) of the control rod (39). Dispositif de sécurité et d'armement selon une des revendications 1 à 10, caractérisé en ce que la tige de commande (39) porte un bouton de manoeuvre (40) permettant de la faire tourner relativement au corps de dispositif et de lui donner au moins deux positions différentes, une position de stockage et une position de fonctionnement, le dispositif comportant également une came de blocage (51) liée en rotation à la tige de commande (39) et coopérant avec une lumière (66) du corps pour interdire toute translation de la tige de commande (39) lorsqu'elle se trouve en position de stockage.Safety and arming device according to one of claims 1 to 10, characterized in that the control rod (39) carries an operating button (40) allowing it to rotate relative to the device body and to give it at least two different positions, a storage position and an operating position, the device also comprising a locking cam (51) linked in rotation to the control rod (39) and cooperating with a light (66) in the body to prevent any translation of the control rod (39) when it is in the position of storage. Dispositif de sécurité et d'armement selon une des revendications 1 à 11, caractérisé en ce qu'il est disposé dans un boîtier constituant une enceinte étanche isolée de l'atmosphère par des joints et en ce que la tige (39) porte à une extrémité externe une soupape (69) comprenant un cylindre (70) pouvant coulisser par rapport à un piston axial (71), la traction de la tige (39) provoquant un déplacement relatif du cylindre (70) et du piston (71) qui provoque une rupture de l'étanchéité entre le cylindre et le piston et un équilibrage des pressions entre l'intérieur du boîtier et l'extérieur.Security and arming device according to one of claims 1 to 11, characterized in that it is disposed in a housing constituting a sealed enclosure isolated from the atmosphere by seals and in that the rod (39) carries to a outer end a valve (69) comprising a cylinder (70) which can slide with respect to an axial piston (71), the traction of the rod (39) causing a relative displacement of the cylinder (70) and of the piston (71) which causes rupture of the seal between the cylinder and the piston and pressure balancing between the interior of the housing and the exterior.
EP19970400962 1996-05-21 1997-04-29 Safety and cocking device, in particular for a mine Expired - Lifetime EP0809085B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9606285 1996-05-21
FR9606285A FR2749072B1 (en) 1996-05-21 1996-05-21 SAFETY AND ARMING DEVICE, PARTICULARLY FOR A MINE

Publications (2)

Publication Number Publication Date
EP0809085A1 true EP0809085A1 (en) 1997-11-26
EP0809085B1 EP0809085B1 (en) 2001-08-22

Family

ID=9492312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970400962 Expired - Lifetime EP0809085B1 (en) 1996-05-21 1997-04-29 Safety and cocking device, in particular for a mine

Country Status (4)

Country Link
EP (1) EP0809085B1 (en)
DE (1) DE69706231T2 (en)
FR (1) FR2749072B1 (en)
NO (1) NO972293L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017109313A1 (en) * 2015-12-22 2017-06-29 Nexter Munitions Reversible safety and arming system for an explosive device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2802700A1 (en) * 1978-01-23 1979-07-26 Hagenuk Neufeldt Kuhnke Gmbh Safety valve for anchored sea mine - has rod and piston system with ratchet bolts preventing inadvertent actuation
BE877259A (en) * 1978-08-03 1979-10-15 Valsella Spa EXPLOSIVE MINE IGNITION SYSTEM AND MINE OPERATING STATUS MONITORING SYSTEM
DE2952722C1 (en) * 1979-12-29 1984-09-06 Hagenuk GmbH, 2300 Kiel Safety valve for sea mines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2802700A1 (en) * 1978-01-23 1979-07-26 Hagenuk Neufeldt Kuhnke Gmbh Safety valve for anchored sea mine - has rod and piston system with ratchet bolts preventing inadvertent actuation
BE877259A (en) * 1978-08-03 1979-10-15 Valsella Spa EXPLOSIVE MINE IGNITION SYSTEM AND MINE OPERATING STATUS MONITORING SYSTEM
DE2952722C1 (en) * 1979-12-29 1984-09-06 Hagenuk GmbH, 2300 Kiel Safety valve for sea mines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017109313A1 (en) * 2015-12-22 2017-06-29 Nexter Munitions Reversible safety and arming system for an explosive device

Also Published As

Publication number Publication date
NO972293L (en) 1997-11-24
DE69706231T2 (en) 2002-04-18
NO972293D0 (en) 1997-05-20
FR2749072B1 (en) 1998-07-10
FR2749072A1 (en) 1997-11-28
DE69706231D1 (en) 2001-09-27
EP0809085B1 (en) 2001-08-22

Similar Documents

Publication Publication Date Title
FR2500617A1 (en) SAFETY DEVICE FOR ROTATION STABILIZED PROJECTILES SPOOL
CH615830A5 (en)
EP1544098A1 (en) Actuation device for the deplacement of a closure element for vehicles
EP0809085B1 (en) Safety and cocking device, in particular for a mine
FR2645268A1 (en) DEVICE FOR DETECTING THE CROSSING OF A TEMPERATURE THRESHOLD
FR2616350A1 (en) TOY FOR THE PNEUMATIC SHOOTING OF PROJECTILES WITH A PISTON COMBINED WITH A DOG
EP1960845B1 (en) Depth measuring device for watch and watch incorporating such a measuring device
FR2504254A1 (en) ANTICHARM MINE IMPROVED
WO1991018168A1 (en) Timed triggering control device for a mechanism
EP0075496B1 (en) Safety and arming arrangements for underwater fuzes
CH708902A2 (en) animated timepiece.
FR2691797A1 (en) Safety and arming system for sub-munition transported by carrier shell - has rotor with pyrotechnic transmission relay inside rotor supporting charge detonator and in line with its axis
EP0627067B1 (en) Priming and self-destruction system for a sub-ammunition
EP4176225B1 (en) Fuze comprising a self-destruction device for a gyratory projectile
EP0269931B1 (en) Time lock
CH719641B1 (en) Actuating device for a watch movement, corresponding watch movement and timepiece.
FR2679324A1 (en) Rearmable safety and arming unit
FR2699662A1 (en) Impact detector for firing mechanism of impact-detonating munition
FR2531204A1 (en) Automatically arming base fuse for rifle grenade.
CH717245A2 (en) Timepiece comprising a waterproof control device.
FR2691798A1 (en) Chemical self destruct system for sub-munition of carrier shell
FR2499710A1 (en) INDECTABLE TIMING SELF-TIMING DEVICE
CH707985A2 (en) watch movement with manual winding push-button.
FR2606136A1 (en) Safety and arming device for dispersible sub-projectiles
EP3394558A1 (en) Reversible safety and arming system for an explosive device

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB SE

17P Request for examination filed

Effective date: 19980509

17Q First examination report despatched

Effective date: 19991117

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB SE

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20010822

REF Corresponds to:

Ref document number: 69706231

Country of ref document: DE

Date of ref document: 20010927

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

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20011122

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: GB

Payment date: 20020327

Year of fee payment: 6

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

Ref country code: DE

Payment date: 20020412

Year of fee payment: 6

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030429

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

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031101

GBPC Gb: european patent ceased through non-payment of renewal fee