EP0633449B1 - Sicherungs- und Scharfsvorrichtung für explosive Gegenständen - Google Patents

Sicherungs- und Scharfsvorrichtung für explosive Gegenständen Download PDF

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Publication number
EP0633449B1
EP0633449B1 EP94401182A EP94401182A EP0633449B1 EP 0633449 B1 EP0633449 B1 EP 0633449B1 EP 94401182 A EP94401182 A EP 94401182A EP 94401182 A EP94401182 A EP 94401182A EP 0633449 B1 EP0633449 B1 EP 0633449B1
Authority
EP
European Patent Office
Prior art keywords
blade
lock
folds
safety
mine
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 - Lifetime
Application number
EP94401182A
Other languages
English (en)
French (fr)
Other versions
EP0633449A1 (de
Inventor
Georges Lemonnier
Jean-Paul Duparc
Jean-Pierre Dussol
Gilles Rebeyrol
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 EP0633449A1 publication Critical patent/EP0633449A1/de
Application granted granted Critical
Publication of EP0633449B1 publication Critical patent/EP0633449B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F42C15/21—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 using spring action

Definitions

  • the technical field of the invention is that of devices of security and armament for explosive devices of mine type, missiles or rockets, intended to be ejected from a tube of launch.
  • the security and arming system of an explosive device of this type usually has a primer door which is immobilized by at least two independently actuable locks one of the other. They must also not be erased until after some time after launch, which then requires detect the order or time of ejection.
  • US-A-3451306 describes a security device in which a striker is kept immobilized by a lock, pushed by a spring, and which comes to bear on a surface internal launch tube. No element is interposed between the rod and the launch tube.
  • Patent FR-A-2582799 which forms the preamble to the independent claim 1, proposes a safety device and weapon for explosive device of mine type ejected by a tube launch. It has two locks, one of which comes resting on the launch tube. Manufacturing tolerances of the launch tube, of the explosive device and of these elements components are such that the length of this latch must vary by several millimeters in order to correctly ensure its function.
  • the subject of the invention is therefore a safety device and weaponry, for an explosive device of the mine type, rocket or missile launched from a launch tube, comprising a primer door component immobilized by at least one lock intended to be held by an internal surface of the launch tube, characterized in that it comprises a blade intended to come between the internal surface of the launch tube and the lock by exerting on the latter a substantially constant effort intended to ensure the holding the lock by the tube in the locked position of the shutter, the blade being deformed beyond its limit elastic without exceeding its breaking strength limit when the craft is in place in the launch tube.
  • the blade has at least three folds, a first fold being pressed against the latch, the two other folds being in abutment against the internal surface of the launch tube, when it is in place in the launch tube.
  • the blade comprises at minus five folds, a first fold being in abutment against the latch, two other folds pressing against the surface internal of the launch tube and the last two being in support against the body of the explosive device, when it is in place in the launch tube.
  • the blade is integral with one of the faces of the explosive device.
  • the blade is integral with one of the tabs of stabilization.
  • the latch 5 is slidably mounted in a housing 9 made in the body of explosive device 1. It comprises a body 10, of external diameter corresponding to the internal diameter of the housing 9, extended by a span cylindrical 11 of smaller diameter whose end has a groove 12 whose function will be explained more far.
  • the other end 13 of the latch 5, of smaller diameter to the housing 9 penetrates inside a counterbore 14 of the shutter 4.
  • a helical spring 15 resting on the one hand against the body 10 and on the other hand against an integral cover 16 of the body of the explosive device 1, brings the lock 5 into abutment against the bottom 17 of the counterbore 14.
  • the lock 6 is engaged by its end 23 in a counterbore 24 of the shutter 4. It comprises in the vicinity of the shutter 4, a groove 25 inside which is housed the end 26 of an intermediate locking means 27. This the latter has a finger 28 which slides in a housing 29 and which is arranged substantially parallel to the lock 5.
  • the body 30 is connected to the cylindrical surface 31 by a narrowing 32 and a frustoconical bearing 33 intended for cooperate with the ball 19.
  • the finger 28 comprises, in the extension of the body 30, a shoulder 34 and a part cylindrical 35.
  • a helical spring 36 is guided by the part cylindrical 35 and bears against the shoulder 34 and the cover 16. He pushes the finger 28 into abutment at the bottom of groove 25.
  • FIG. 2 represents an explosive device 1 which is a dispersible mine for example by means of a cargo shell.
  • This mine 1 is equipped with a positioning device, type of that described in patent FR9214578, which comprises tabs 44 regularly angularly spaced (here 8) and one end of which is made integral of a face 45 of the mine by tie rods 46.
  • Mine 1 also has two metal washers 47 and 48 positioned on annular notches 49 and 50 fitted respectively on faces 45 and 51.
  • the washers are made integral with the mine by the tie rods 46.
  • the tongues 44 each have an opening 53 and can be folded into housings 52 fitted in the mine body 1.
  • FIG. 2 The partial section of Figure 2 shows the end 42 of lock 6, belonging to the security system and 2 previously described, end which comes in support against the blade 43.
  • the blade 43 is made integral with mine 1 at its face 51 by one of its ends 55. Due to the presence of lock 6, the passage of a tie rod was impossible here, the joining of the blade 43 and one of the tongues 44 is therefore produced by screws 54.
  • the fold 57 which bears against the end 42 of the latch 6, includes a flat surface of dimensions slightly larger than the diameter of the latch 6.
  • the two folds 58a and 58b are intended to come in contact with the internal surface of the launch tube 3 and are located symmetrically with respect to the fold 57 so to ensure a perfect distribution of the pressure forces.
  • the last two folds 59a and 59b are intended for press the blade against the body of mine 1 at level of a groove 60 (fig 2) whose usefulness will be specified later.
  • Figure 4 is a partial view, in the direction F in Figure 2.
  • the blade 43 has a width 1 less than the width of the opening 53 of the tongue 44 so as not to interfere with the latter when setting up the mine in the cargo shell.
  • the blade 43 penetrating inside the groove 60 by the folds 59a and 59b is held laterally which avoids its torsional deformation which could be generated during the firing of the cargo shell which is subjected to a very strong angular acceleration.
  • Figure 6 shows in partial section a half view of mine 1 placed in its launch tube 3 which is, in in the case of a cargo shell, the wall of the latter.
  • the dimension and material of the blade 43 will be also determined by taking into account the value of the centrifugal force generated by the rotation of the shell. In effect it must not deform the blade beyond its breaking strength limit.
  • the blade 43 is cut from the tongue 44.
  • Figure 8 shows the safety device and arming of Figure 1 according to a third mode of realization of the invention.
  • the blade 43 is made integral with the explosive device 1 by example by means of a connecting screw (not shown) placed at a hole 56 made at the end 55 of the blade 43.
  • the pressure force on the latch 6 is determined by the sizing and material of the blade 43. It is such that the elastic limit of the blade is reached without being exceeded the breaking strength limit, the blade thus working in its plastic phase. This causes constant effort on latch 6 and compensates any significant variation in dimensional tolerances.
  • the distribution of forces is improved by the shape rounded folds which avoid a concentration of constraints.
  • the material of the blade 43 will be chosen from so that it has a relationship between its Resistance to the maximum rupture (Rm) and its elastic resistance (Rp0,2) (practical resistance at 20% defined by French standard NF EN 10002-1) as well as a high elongation A.
  • Rm Resistance to the maximum rupture
  • Rp0,2 elastic resistance

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Earth Drilling (AREA)
  • Toys (AREA)

Claims (5)

  1. Sicherungs- und Entsicherungsvorrichtung (2) für ein Sprengmittel (1) des Typs Mine, gelenkter oder ungelenkter Flugkörper, abgeschossen von einem Abschußrohr (3), mit einer Zünderträgerklappe (4) die von mindestens einem Riegel (6) stillgelegt wird, der von einer Innenoberfläche des Abschußrohrs gehalten werden soll, gekennzeichnet dadurch, daß er eine Klinge (43) umfaßt, die sich zwischen die Innenoberfläche des Abschußrohrs (3) und den Riegel (6) legen und auf letzteren eine in etwa konstante Kraft ausüben soll, und die den Riegel durch das Rohr in Verriegelungsposition der Klappe halten soll, wobei die Klinge beim Anbringen des Geräts im Abschußrohr über ihre elastische Grenze hinaus jedoch nicht über ihre Bruchfestigkeitsgrenze hinaus verformt wird.
  2. Sicherungs- und Entsicherungsvorrichtung gemäß dem Anspruch 1, gekennzeichnet dadurch, daß die Klinge (43) mindestens 3 Falten umfaßt, wobei eine erste Falte (57) an den Riegel anliegt, und die beiden anderen Falten (58a, 58b) an die Innenfläche des Abschußrohrs, sobald das Sprengmittel im Abschußrohr angebracht ist.
  3. Sicherungs- und Entsicherungsvorrichtung gemäß einem beliebigen der Ansprüche 1 oder 2, gekennzeichnet dadurch, daß die Klinge (43) mindestens 5 Falten aufweist, wobei eine erste Falte (57) an den Riegel anliegt, zwei weitere Falten (58a, 58b) auf der Innenfläche des Abschußrohrs aufliegen und die beiden letzten Falten (59a, 59b) auf den Körper des Sprengmittels, sobald dieses im Abschußrohr angebracht ist.
  4. Sicherungs- und Entsicherungsvorrichtung gemäß einem beliebigen der Ansprüche 1 bis 3, gekennzeichnet dadurch, daß die Klinge (43) fest mit einer der Flächen des Sprengmittels verbunden ist.
  5. Sicherungs- und Entsicherungsvorrichtung für ein Sprengmittel des Typs Mine, versehen mit Stabilisierungszungen (44) gemäß einem beliebigen der Ansprüche 1 bis 3, gekennzeichnet dadurch, daß die Klinge (43) fest mit einer der Zungen verbunden ist.
EP94401182A 1993-06-28 1994-05-30 Sicherungs- und Scharfsvorrichtung für explosive Gegenständen Expired - Lifetime EP0633449B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9307824A FR2707753B1 (fr) 1993-06-28 1993-06-28 Dispositif de sécurité et d'armement pour engin explosif.
FR9307824 1993-06-28

Publications (2)

Publication Number Publication Date
EP0633449A1 EP0633449A1 (de) 1995-01-11
EP0633449B1 true EP0633449B1 (de) 1998-07-29

Family

ID=9448608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94401182A Expired - Lifetime EP0633449B1 (de) 1993-06-28 1994-05-30 Sicherungs- und Scharfsvorrichtung für explosive Gegenständen

Country Status (4)

Country Link
US (1) US5408701A (de)
EP (1) EP0633449B1 (de)
DE (1) DE69412011T2 (de)
FR (1) FR2707753B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL444564A1 (pl) * 2023-04-24 2024-10-28 Wojskowy Instytut Techniki Inżynieryjnej Im. Profesora Józefa Kosackiego Mechanizm do usuwania zawleczek zabezpieczeń transportowych

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2960037A (en) * 1952-01-23 1960-11-15 Jr Harry Raech Safety arming device for explosive missiles
US2998944A (en) * 1958-12-15 1961-09-05 Rimmer William Delay mechanism
US3279374A (en) * 1963-12-16 1966-10-18 Magnavox Co Explosive device
US3451306A (en) * 1967-01-26 1969-06-24 Susquehanna Corp Safe and arm ejection system
US3662607A (en) * 1971-01-25 1972-05-16 Us Army Latching mechanism
CH534859A (de) * 1971-02-01 1973-03-15 Oerlikon Buehrle Ag Trägergeschoss mit Sekundärgeschossen
FR2582799B1 (fr) * 1985-05-31 1987-11-13 France Etat Armement Securite pour engin explosif destine a etre lance a partir d'un tube
US4667600A (en) * 1986-02-25 1987-05-26 The United States Of America As Represented By The Secretary Of The Air Force Safe/arm explosive transfer mechanism
FR2678724B1 (fr) * 1991-07-02 1995-01-13 Serat Dispositif de securite et de mise a feu pre-programmee pour charge militaire.
FR2685079B1 (fr) * 1991-12-13 1995-05-12 Lacroix E Tous Artifices Dispositif mecanique sensible a la temperature pour l'initiation d'un systeme pyrotechnique.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL444564A1 (pl) * 2023-04-24 2024-10-28 Wojskowy Instytut Techniki Inżynieryjnej Im. Profesora Józefa Kosackiego Mechanizm do usuwania zawleczek zabezpieczeń transportowych

Also Published As

Publication number Publication date
US5408701A (en) 1995-04-25
DE69412011D1 (de) 1998-09-03
FR2707753A1 (fr) 1995-01-20
EP0633449A1 (de) 1995-01-11
DE69412011T2 (de) 1998-12-17
FR2707753B1 (fr) 1995-09-22

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