EP0229086B1 - Fusee pour projectile - Google Patents

Fusee pour projectile Download PDF

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Publication number
EP0229086B1
EP0229086B1 EP86903192A EP86903192A EP0229086B1 EP 0229086 B1 EP0229086 B1 EP 0229086B1 EP 86903192 A EP86903192 A EP 86903192A EP 86903192 A EP86903192 A EP 86903192A EP 0229086 B1 EP0229086 B1 EP 0229086B1
Authority
EP
European Patent Office
Prior art keywords
retarder
rotor
mobile member
safety
armed
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
EP86903192A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0229086A1 (fr
Inventor
Jean-Pierre Golay
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.)
Mefina SA
Original Assignee
Mefina 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 Mefina SA filed Critical Mefina SA
Priority to AT86903192T priority Critical patent/ATE48914T1/de
Publication of EP0229086A1 publication Critical patent/EP0229086A1/fr
Application granted granted Critical
Publication of EP0229086B1 publication Critical patent/EP0229086B1/fr
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
    • 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
    • F42C15/192—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 rotatable in a plane which is parallel to the longitudinal axis of the projectile

Definitions

  • the subject of the invention is a projectile rocket, with detonator and muzzle safety, comprising a body topped by a hat, a striker to act on a primer on impact, an arming mechanism, comprising a movable part. arranged to first occupy a safety position, in which cooperation between the striker and the primer is impossible and then an armed position which allows this cooperation, a mechanical escapement timer to adjust the passage time of the moving part of the safety position to the armed position, this timer meshing with a toothing of the moving part, means for varying the duration of the passage from the safety position to the armed position.
  • French Patent No. 2,474,687 describes a rocket of this kind, except for the fact that it does not include any means for varying the duration of the passage from the safety position to the armed position.
  • such means are known in themselves, for example from US Patent No. 2,644,398, in which the means for varying the duration of the transition from the safety position to the armed position include a differential gear mechanism for vary the initial position of a moving part which must be brought into a final arming position. This mechanism is complicated and expensive.
  • the object of the invention is to produce a robust, simple and inexpensive device, making it possible to modify the time delay for the passage of the moving part from a well-defined initial position to an equally well-defined final position.
  • the rocket timer which is the subject of the invention is movable so as to modify its position along the toothing to modify the distance over which it cooperates with this toothing before the moving part arrives in its armed position.
  • the rocket comprises a body 1 on which is mounted a cap 2 which can be angularly displaced relative to the body 1.
  • the position given to the cap 2 is preserved thanks to the friction exerted on the body 1 by a ring 3 forming a cam, provided with two annular seals 4 and 5 and the operation of which will be explained later.
  • the front part of the cap 2 carries a striker 6 pushes against a cap 7 by a spring 8 and provided with a tip 9.
  • This striker is intended to cooperate with a primer 10 carried by a rotor 12, the latter being shown in FIG. 1 in the safety position, position in which the primer is disposed outside the trajectory of the tip 9 of the striker 8.
  • This rotor 12 is integral with a shaft 13 pivoting in bearings 14 carried by the body 1. The ends of this shaft 13 each have a flat 1 5 located opposite a projection 16 of the ring 3 when the latter is in the safety position given by the angular position of the cap 2.
  • FIGS. 3 and 4 The angular displacement of the rotor enabling the primer 10 to be brought into the operating position is controlled by a device clearly visible in FIGS. 3 and 4.
  • This device comprises an inertia lever 17 pivotally mounted on one of the bearings 14.
  • This lever d inertia has its center of gravity eccentric with respect to the axis of the shaft 13 and it is retained in the safety position, illustrated in FIGS. 3 and 4, by a lock 18 engaged in a notch 19 of this lever, thus than in another notch 20 of the rotor 12, this lock being biased by a spring 21 towards the outside of the projectile, but it is retained in position by one of the projections 16 of the ring 3, when the latter is in the safety position .
  • the lever 17 is subjected to the faction of a pusher 22, subjected to the action of a spring 23, applying it against a bearing part 24 of the lever 17.
  • a torsion spring 25, wound on the shaft 13 of the rotor 12, is fixed by one of its ends to the lever 17 and by its other end to the shaft 13.
  • This spring 25 is intended to supply the engine torque to rotate the rotor 12 after the start of the blow and bring it into the active position allowing the tip 9 of the striker to strike the primer 10.
  • the rotation of the rotor 12 is driven by an exhaust timer 26 which includes a gear train multiplier 27 cooperating with a pendulum 28.
  • the mechanism is attacked by a toothed sector 29 integral with the rotor 12 and meshing with a toothed pinion 30 of said mechanism.
  • the timer comprises two plates 36 and 36 'which are pivoted on one of the bearings 14 of the shaft 13, which allows angular movement of the timer around this shaft.
  • Two delay times are given by the two different positions of the timer, shown in Figures 2 and 5.
  • the rotor 12 In the case of Figure 2, the rotor 12 must rotate counterclockwise to assume the armed position.
  • the toothed sector 29 is engaged over the entire length of its teeth during this angular displacement. A little before the end of the movement, the sector 29 escapes the pinion 30 and the rotor 12 takes its final position.
  • the position of the timer is such that the engagement of the sector 29 with the pinion 30 takes place, in the assured position of the rotor 12, near the end of the toothing of the sector.
  • the rotor is therefore braked on a shorter stroke which therefore gives a shorter delay time.
  • the setting of the timer in the desired position is obtained by an operation of the ring 3 which has ramps 37 to 40 which are shown diagram ticks in Figures 6 and 7. These ramps cooperate with two pins 41 and 42 of the timer to bring it into one or the other of the positions illustrated in Figures 2 and 5.
  • Figure 6 shows the ramps in the secured position of the ring 3, for which the timer occupies an average position between its two extreme positions. If the ring 3 is rotated to move its ramps to the right, the ramp 39 cooperates with the stud 42 to tilt the timer in the position of FIG. 5. A rotation of the bage 3 in the opposite direction would bring the timer in its position according to FIG. 2 by cooperation of the ramp 38 with the stud 41.
  • the operation of the rocket is as follows:
  • the ring 3 Before loading the weapon with the projectile, the ring 3 must be maneuvered for example using the cap 2 to remove the transport safety by releasing the projections 16 from the flats 15, this ring being turned in one direction or in the 'other to switch the timer to the one of the two positions that has been chosen.
  • this lever 17 When this lever 17 has made a rotation of about a quarter of a turn, it completely releases the lock 18 thanks to a recess 35 provided in this lever and in which the lock 18 engages to lock the lever 17 in its armed position.
  • the rotor 12 is then unlocked and rotates under the effect of the engine torque exerted by the spring 25, this movement being timed by the mechanism 26 to the selected value.
  • the primer 10 is located opposite the point 9 of the striker, while a reinforcing relay 31 carried by the rotor is placed opposite a pyrophoric relay 32 and a detonator 33.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Lock And Its Accessories (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Retarders (AREA)
  • Automotive Seat Belt Assembly (AREA)
EP86903192A 1985-07-12 1986-06-12 Fusee pour projectile Expired EP0229086B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86903192T ATE48914T1 (de) 1985-07-12 1986-06-12 Geschosszuender.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3024/85 1985-07-12
CH302485A CH663875GA3 (ja) 1985-07-12 1985-07-12

Publications (2)

Publication Number Publication Date
EP0229086A1 EP0229086A1 (fr) 1987-07-22
EP0229086B1 true EP0229086B1 (fr) 1989-12-20

Family

ID=4246926

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86903192A Expired EP0229086B1 (fr) 1985-07-12 1986-06-12 Fusee pour projectile

Country Status (8)

Country Link
US (1) US4739706A (ja)
EP (1) EP0229086B1 (ja)
CA (1) CA1267566A (ja)
CH (1) CH663875GA3 (ja)
DE (1) DE3667729D1 (ja)
ES (1) ES8800423A1 (ja)
FI (1) FI89981C (ja)
WO (1) WO1987000616A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991001184A1 (en) * 1989-07-18 1991-02-07 Bartimote John K Material handling apparatus and method
US5483895A (en) * 1995-04-03 1996-01-16 Halliburton Company Detonation system for detonating explosive charges in well
RU2648742C1 (ru) * 2016-10-10 2018-03-28 Владимир Викторович Черниченко Предохранительно-взводящий механизм
US10948274B1 (en) 2019-09-27 2021-03-16 Raytheon Company Heat-activated triggering device with bi-metal triggering element
US11022414B2 (en) * 2019-09-27 2021-06-01 Raytheon Company Triggering device with safety valve and linkage
RU2745639C1 (ru) * 2020-02-17 2021-03-29 Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") Механизм блокировки пиропривода
RU2761295C2 (ru) * 2020-03-02 2021-12-06 Акционерное общество "Научно-производственное объединение "Прибор" имени С.С. Голембиовского" Головной взрыватель

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474687A1 (fr) * 1980-01-29 1981-07-31 Mefina Sa Fusee pour projectile non-girant

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH210217A (fr) * 1939-03-29 1940-06-30 Leon Breitling Willy Fusée pour projectile.
US2644398A (en) * 1947-12-17 1953-07-07 Us Army Constant torque clutch
US2763213A (en) * 1952-01-22 1956-09-18 Rueger Herman Fuse
US2709962A (en) * 1952-05-09 1955-06-07 Jr Walter Funk Mortar fuse
US2762304A (en) * 1953-06-10 1956-09-11 John M King Delay arming fuze for projectiles
DE977759C (de) * 1965-12-16 1969-11-06 Junghans Ges Mit Beschraenkter Uhrwerkszuender mit einem umlaufenden Tempierring
BE859035A (fr) * 1976-11-05 1978-01-16 Sormel Sa Dispositif de securite a volet pour chaine pyrotechnique
US4215635A (en) * 1978-12-14 1980-08-05 The United States Of America As Represented By The Secretary Of The Army Safe and arming device
DE3107110C2 (de) * 1981-02-26 1984-03-29 Gebrüder Junghans GmbH, 7230 Schramberg Sicherungsvorrichtung für Zünder von Drallgeschossen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474687A1 (fr) * 1980-01-29 1981-07-31 Mefina Sa Fusee pour projectile non-girant

Also Published As

Publication number Publication date
DE3667729D1 (de) 1990-01-25
FI871055A (fi) 1987-03-11
ES555935A0 (es) 1987-10-16
WO1987000616A1 (fr) 1987-01-29
ES8800423A1 (es) 1987-10-16
CH663875GA3 (ja) 1988-01-29
FI871055A0 (fi) 1987-03-11
EP0229086A1 (fr) 1987-07-22
CA1267566A (fr) 1990-04-10
US4739706A (en) 1988-04-26
FI89981C (fi) 1993-12-10
FI89981B (fi) 1993-08-31

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