EP0016701B1 - Sicherheitsvorrichtung für pyrotechnische Elemente - Google Patents

Sicherheitsvorrichtung für pyrotechnische Elemente Download PDF

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Publication number
EP0016701B1
EP0016701B1 EP80400352A EP80400352A EP0016701B1 EP 0016701 B1 EP0016701 B1 EP 0016701B1 EP 80400352 A EP80400352 A EP 80400352A EP 80400352 A EP80400352 A EP 80400352A EP 0016701 B1 EP0016701 B1 EP 0016701B1
Authority
EP
European Patent Office
Prior art keywords
projectile
safety device
rotor
axis
mobile member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80400352A
Other languages
English (en)
French (fr)
Other versions
EP0016701A1 (de
Inventor
Maurice René Petiteau
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.)
SORMEL SA
Original Assignee
SORMEL 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 SORMEL SA filed Critical SORMEL SA
Priority to AT80400352T priority Critical patent/ATE2286T1/de
Publication of EP0016701A1 publication Critical patent/EP0016701A1/de
Application granted granted Critical
Publication of EP0016701B1 publication Critical patent/EP0016701B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C9/00—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition
    • F42C9/02—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means
    • F42C9/04—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means by spring motor
    • F42C9/041—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means by spring motor the clockwork activating a security device, e.g. for unlocking the firing-pin
    • 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
    • F42C15/18—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved
    • F42C15/188—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved using a rotatable carrier

Definitions

  • the present invention relates to a safety device for a pyrotechnic chain.
  • a safety device housed in a recess of a projectile provided with an explosive charge, said device being intended for the pyrotechnic chain of the projectile and comprising a movable member, again called fire switch shutter, actuated by a clockwork mechanism with tilting regulator and mobile motor and able to occupy two different positions, for the first of which the ignition of said explosive charge is prevented, while for the second of said positions the ignition of this explosive charge is possible, a trigger lever blocking in said first position any movement of said member relative to the projectile, but the action of this lever being capable of being inhibited by said clock mechanism.
  • the present invention relates to a safety device for a pyrotechnic chain which can be miniaturized to the point that its largest dimension can be lowered below 10 mm.
  • the safety device housed in a recess of a rotating projectile provided with an explosive charge said device being intended for the pyrotechnic chain of the projectile and comprising a mobile member actuated by a mechanism of timepiece with tilting regulator and mobile motor and able to occupy two different positions, for the first of which the ignition of said explosive charge is prevented, while for the second of said positions the ignition of this explosive charge is possible, a lever trigger blocking in said first position any movement of said member relative to the projectile, but the action of this lever being capable of being inhibited by said clock mechanism, is remarkable in that said movable member is in the form of '' a housing mounted so as to be able to move in the recess of said projectile and enclosing said clock mechanism, its regulator, as well as said levi er of triggering and in that, in the first position, the axis of the tilting regulator coincides with the axis of rotation of said projectile.
  • a compact assembly is obtained, the thickness of which can be limited, since the movable member performs the switch functions while incorporating the control mechanism.
  • the organ itself and the whole becomes a protective element contributing to safety, while in known devices only a part of them acted as a switch.
  • the movable member is constituted by a rotor capable of turning around an axis parallel to the axis of rotation of the projectile.
  • the displacement of the rotor from the first to the second position may be due to the action of centrifugal force on the rotor whose center of gravity is eccentric, even if its geometric shape is of revolution, or to the action of at least one spring, or else the combined action of centrifugal force and a spring.
  • the movable member is constituted by a slide whose sliding direction is perpendicular to the axis of rotation of the projectile.
  • the displacement of the slide between its two positions may be due to the centrifugal force alone, to at least one spring or to a combination of the two.
  • the movable member may include a central body on either side of which are provided covers which are integral with it and which, in the case of a rotor, each carry a pivot, for mounting the rotor in said recess of the projectile , the clock mechanism being housed at least partly in the central body.
  • the trigger lever comprises at one of its ends a hook cooperating with a first notch of the periphery of the recess of the housing of the movable member in the projectile, to maintain this member in the first position.
  • This trigger lever may further include a locking finger inhibited in the first position but capable of cooperating with a second notch of the periphery of the recess of said housing, to maintain the movable member in its second position.
  • This safety device can comprise an inertia lock and this can be provided either for blocking simultaneously, or for simultaneously unlocking the regulator of the clock mechanism and the release lever.
  • the moving mechanism of the clock mechanism may have an eccentric mass; however, it can also be attached to a more eccentric arm.
  • the device according to the invention shown in FIGS. 1 to 4, consists of a rotor 1, provided with axial pivots of rotation 2 and 3 and comprising an intermediate cylindrical body 4, closed by two end covers 5 and 6, of which the pivots 2 and 3 are respectively attached.
  • the cover 5 is also cylindrical and covers the entire face opposite the intermediate body 4.
  • the cover 6 has the shape of a disk sector and covers only part of the face opposite the intermediate body 4.
  • the latter comprises an eccentric primer housing 7, capable of being brought by rotation of the rotor 1, in the axis of rotation 13 of the projectile which happens to be the axis of the pyrotechnic chain, said eccentric primer housing 7 not being covered by the cover 6.
  • the rotor 1 is mounted in a cylindrical housing 8, provided in the rotating projectile 9 for which it is intended.
  • This cylindrical housing 8 comprises bearings (not shown) in which the pivots 2 and 3 are mounted and which define therewith an axis of rotation 14 for the rotor, the axes 13 and 14 being parallel.
  • the rotor is normally prevented from rotating relative to the projectile 9 by the hook 10 of a trigger lever 11, engaged in a peripheral notch 12 of the housing 8.
  • the housing 8 is eccentric relative to the axis of rotation 13 of the projectile, but said axis 13 is located inside said housing 8.
  • the center of gravity of the rotor 1 is eccentric relative to the axis 14 .
  • the pinion 16 acts as an escapement mobile for a clockwork mechanism further comprising a motor mobile 17, a first intermediate mobile 18 and a second intermediate mobile 19.
  • the axes of the various pinions 16 to 19 are parallel to the axis 13.
  • Figure 4 illustrates the kinematic chain formed by these pinions 16 to 19
  • the motor mobile 17 comprises an eccentric mass 20, on which a force of inertia F 1 is exerted.
  • the axis of the moving motor 17 passes through the intermediate body 4 and comprises, at its end directed towards the cover 6, a half-moon section 21, cooperating with the end 22 of the trigger lever 11, opposite the hook 10.
  • the trigger lever 11 is mounted between the intermediate body 4 and the cover 6, so as to be able to pivot around an axis 23, parallel to axes 13 and 14.
  • the trigger lever 11 further comprises a locking finger 24, capable of cooperating with a locking notch 25, provided at the periphery of the housing 8, when the rotor 1 has been able to rotate relative to the projectile 9.
  • the position of the mobile motor 17 is adjusted so that, via the half-moon 21 and the end 22, the rotor 1 is locked in the housing 8 by the cooperation of the hook 10 and the notch 12 and so that the primer disposed in the housing 7 is outside the pyrotechnic chain.
  • the device according to the invention comprises an anchor lock 26 pressed by a spring 27 against the anchor 15, to prevent the latter from tilting about its axis.
  • the latch 26 moves outwards by unlocking the clock mechanism and the rotor.
  • the force Fi exerted on the eccentric mass 20 of the movable motor 17 starts the clock mechanism.
  • the rotation of the mobile motor 17 rotates the half-moon 21 (arrow F 3 ) and the trigger lever 11 rotates around the axis 23, in the direction of the arrow F 4 under the action of centrifugal force.
  • the hook 10 then leaves the notch 12, which unlocks the rotor 1 of the projectile 9.
  • the rotor 1 therefore rotates in its housing 8 around the axis 14 in the direction of the arrow F 5 .
  • the rotor 1 consists of a cylindrical intermediate body 4, closed at its two ends by covers 5 and 6 also cylindrical, carrying the pivots 2 and 3.
  • the housing d the primer 7 is located in the body 4 and opens into the cover 5.
  • the rotor 1 is rotatably mounted in the housing 8 provided in the rotating projectile 9 and is prevented from rotating by the hook 10 of the trigger lever 11, engaged in the peripheral notch 12.
  • an anchor 15 Between the intermediate cylindrical body 4 and the cover 6 are mounted, an anchor 15, a pinion 16, a motor mobile 17, a first intermediate mobile 18 and a second intermediate mobile 19.
  • the movable motor 17 is integral, by its half-moon end 21, with an eccentric arm 30 housed between the intermediate body 4 and the cover 5.
  • the trip lever 11 mounted pivoting about its axis 23.
  • the device according to FIGS. 5 to 9 comprises a sliding inertia lock 32 passing through the central body 4 and capable of either blocking the trigger lever 11 and the anchor 15 simultaneously, or of simultaneously releasing the trigger lever 11 and anchor 15.
  • the mobile motor 17 has been omitted, and an anchor lock 26 is pressed elastically for a spring 27, and an interlocked lock 32, blocking the trigger lever 11.
  • a toothed wheel 33 integral with the rotor 1 and concentric with it is engaged with a pinion 34 integral in rotation with the intermediate mobile 18 and concentric with it.
  • the clock mechanism begins to count and the hook retracts under the action of the force F 4 .
  • the action of the centrifugal force turns the rotor 1, whose center of gravity is eccentric relative to the axis 14, the pinion 34 rolling without sliding on the fixed toothed wheel 33.
  • a spiral spring 35 is provided to promote or cause the rotation of the rotor 1, depending on whether the center of gravity of the rotor is offset or not by relative to the axis 14.
  • a spring 36 is provided to assist in the tilting of the trigger lever 11.
  • FIGS. 12 to 15 illustrate embodiments of the device according to the invention, in which the movable member consists of a slide 40, housed in a radial recess 41 of the projectile 9.
  • the slide 40 carries a mechanism 15, 19, 21, 30 to 32 similar to that of the device in FIGS. 5 to 9.
  • the hook 10 is engaged in a notch 12 provided in the wall of the recess 41 in the projectile 9.
  • the eccentric arm 30 has been omitted and replaced by a spiral spring 42, serving as a motor for the mobile 17.
  • a spring 43 is provided for exerting a force, in the direction of the force F 5 , on the slide 40.
  • a spring 44 is provided to assist in the tilting of the trigger lever 11.
  • the device of FIG. 14 does not include a mobile motor 17, a half-moon 21, nor a release lever 30.
  • the mobile 18 is engaged with a pinion 45, itself engaged with a rack 46 secured to the wall of the housing 41.
  • the slide 40 moves under the action of the force F 5 so that the pinion 45 rolls on the rack 46.
  • housings 7 were intended to contain a primer for fire initiation, it goes without saying that these housings 7 could contain an intermediate charge between an initiation primer and explosives arranged outside the rotors or slides or else could be only a fire transmission channel between this primer and these explosives external to the movable member. In these cases, the movable member which would be interposed in the pyrotechnic chain instead of being the beginning, would act as a retractable screen.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Air Bags (AREA)
  • Emergency Lowering Means (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Lock And Its Accessories (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Claims (10)

1. Sicherheitsvorrichtung, die in einer Ausnehmung (8) eines sich drehenden Projektils (9) eingesetzt ist, das mit einer Explosivladung versehen ist, die zur Verwendung als Feuerwerkskette bestimmt ist und die ein bewegliches Bauteil (1), das von einem Zeitgebermechanismus mit Kippregler (15) und Antriebskörper (17) betrieben wird und zwei unterschiedliche Stellungen einnehmen kann, in deren erster das Feuern oder Zünden der Explosivladung verhindert wird, während in der zweiten Stellung das Feuern oder Zünden der Explosivladung möglich ist, und einen Auslösehebel (11) aufweist, der in der ersten Stellung jegliche Bewegung des beweglichen Bauteils (1) in bezug auf das Projektil (9) blockiert und dessen Wirkung durch den Zeitgebermechanismus gehemmt werden kann, dadurch gekennzeichnet, daß das bewegliche Bauteil (1) als Gehäuse ausgebildet ist, das so eingesetzt ist, daß es sich in der Ausnehmung (8) des Projektils (9) verschieben kann und dabei den Zeitgebermechanismus sowie den Auslösehebel einschließt, und daß in der ersten Stellung die Achse (13) des Kippreglers (15) mit der Rotationsachse des Projektils (9) zusammenfällt.
2. Sicherheitsvorrichtung nach Anspurch 1, dadurch gekennzeichnet, daß das bewegliche Bauteil (1) als Rotor ausgebildet ist.
3. Sicherheitsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das bewegliche Bauteil (1) als Gleitstück oder Schlitten ausgebildet ist.
4. Sicherheitsvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Massenmittelpunkt des Rotors zur Rotationsachse (14) außermittig angeordnet ist.
5. Sicherheitsvorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Gleitrichtung des Gleitstücks senkrecht zur Rotationsachse des Projektils (9) verläuft.
6. Sicherheitsvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Verschiebung des beweglichen Bauteils (1) aus seiner ersten in seine zweite Stellung zumindest zum Teil auf die Wirkung elastischer Mittel (43) zurückzuführen ist.
7. Sicherheitsvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Rotor (1) einen Zentralkörper (4) besitzt, der beidseitig mit Kappen (5, 6) versehen ist, die mit ihm fest verbunden sind, und daß der Zeitgebermechanismus (15 bis 20) zumindest zum Teil im Zentralkörper untergebracht ist.
8. Sicherheitsvorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Auslösehebel (11) an einem seiner Enden einen Haken (10) aufweist, der mit einer ersten Kerbe (12) auf der Peripherie der Ausnehmung zur Unterbringung des beweglichen Bauteils zusammenarbeitet, um es in seiner ersten Stellung zu halten.
9. Sicherheitsvorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß der Auslösehebel (11) noch einen Verriegelungsstift (24) aufweist, der in der ersten Stellung des beweglichen Bauteils gehemmt wird, jedoch mit einer zweiten Kerbe (25) auf der Peripherie der Ausnehmung (8) zur Unterbringung des beweglichen Organs (1) zusammenarbeitet, um es in der zweiten Stellung zu halten.
10. Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, durch einen Trägheitsriegel (32) entweder zum gleichzeitigen Blockieren oder gleichzeitigen Freisetzen des Reglers des Zeitmechanismus und des Auslösehebels.
EP80400352A 1979-03-19 1980-03-17 Sicherheitsvorrichtung für pyrotechnische Elemente Expired EP0016701B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80400352T ATE2286T1 (de) 1979-03-19 1980-03-17 Sicherheitsvorrichtung fuer pyrotechnische elemente.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7906883 1979-03-19
FR7906883A FR2452082B1 (fr) 1979-03-19 1979-03-19 Dispositif de securite pour chaine pyrotechnique

Publications (2)

Publication Number Publication Date
EP0016701A1 EP0016701A1 (de) 1980-10-01
EP0016701B1 true EP0016701B1 (de) 1983-01-19

Family

ID=9223276

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400352A Expired EP0016701B1 (de) 1979-03-19 1980-03-17 Sicherheitsvorrichtung für pyrotechnische Elemente

Country Status (8)

Country Link
US (1) US4320705A (de)
EP (1) EP0016701B1 (de)
AT (1) ATE2286T1 (de)
AU (1) AU534242B2 (de)
CA (1) CA1139990A (de)
DE (1) DE3061661D1 (de)
ES (1) ES490301A0 (de)
FR (1) FR2452082B1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2454080A2 (fr) * 1976-11-05 1980-11-07 Sormel Sa Dispositif de securite a volet pour chaine pyrotechnique
SE442446B (sv) * 1980-09-25 1985-12-23 Bofors Ab Tendrorsekring med tva sperrelement med forutbestemd tidsfoljd for utlosning
SE452365B (sv) * 1986-03-13 1987-11-23 Ffv Affersverket Sekringsanordning for ammunitionstendror
US4796532A (en) * 1987-11-12 1989-01-10 Magnavox Government And Industrial Electronics Company Safe and arm device for spinning munitions
DE9203980U1 (de) * 1992-03-25 1993-04-22 Zander, Hans, 33442 Herzebrock-Clarholz Sicherungsadapter
DE19727002C2 (de) * 1997-06-25 1999-12-16 Rheinmetall W & M Gmbh Sicherungsvorrichtung für Zünder von Drallgeschossen mit einem durch einen Detonatorträger verschwenkbaren Verriegelungshebel
BE1016357A3 (fr) * 2004-09-20 2006-09-05 Zeebrugge Forges Sa Dispositif de securite et d'armement de fusee pour munition gyrostabilisee de type roquette.

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479851A (en) * 1947-05-06 1949-08-23 Borg George W Corp Delayed arming device for projectiles
US2664822A (en) * 1950-01-03 1954-01-05 Frank B Hale Fuze
CH332853A (de) * 1955-08-23 1958-09-30 Inventa Ag Geschosskopf mit eingebautem Uhrwerkzünder
FR1179371A (fr) * 1956-06-28 1959-05-22 Inventa Ag Dispositif de sûreté pour capsules fulminantes de projectiles
US3075465A (en) * 1957-07-23 1963-01-29 Magnavox Co Centrifugal fuze
US3013496A (en) * 1960-09-02 1961-12-19 Harold G Wenig Centrifugal drive means for missile and fuze applications
CH399254A (fr) * 1964-05-27 1966-03-31 Industrial Holding Ets Fusée de projectile
CH464015A (fr) * 1967-10-05 1968-10-15 Mefina Sa Fusée pour projectile girant
US3547034A (en) * 1967-11-13 1970-12-15 Us Army Mechanical time fuze
US3608494A (en) * 1969-03-05 1971-09-28 Gen Electric Time delay fuse
DE2007358A1 (de) * 1970-02-18 1971-09-02 Honeywell Gmbh, 6000 Frankfurt Drallbetatigte Verzögerungseinrichtung und deren Anwendung in einer Sicherungsvor richtung für Geschoßzunder
US3670655A (en) * 1970-06-09 1972-06-20 Delaware Valley Armaments Inc Timing mechanism
FR2370259A1 (fr) * 1976-11-05 1978-06-02 Sormel Sa Dispositif de securite a volet pour chaine pyrotechnique
FR2385076A1 (fr) * 1977-12-06 1978-10-20 Trt Telecom Radio Electr Dispositif de securite pour fusee de projectile girant

Also Published As

Publication number Publication date
DE3061661D1 (en) 1983-02-24
AU534242B2 (en) 1984-01-12
CA1139990A (fr) 1983-01-25
ES8103370A1 (es) 1981-02-16
AU5635480A (en) 1980-09-25
FR2452082B1 (fr) 1986-07-25
FR2452082A1 (fr) 1980-10-17
US4320705A (en) 1982-03-23
ATE2286T1 (de) 1983-02-15
ES490301A0 (es) 1981-02-16
EP0016701A1 (de) 1980-10-01

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