EP0197359A1 - Dispositif de sécurité pour fusée actionnée par la rotation du projectile - Google Patents

Dispositif de sécurité pour fusée actionnée par la rotation du projectile Download PDF

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Publication number
EP0197359A1
EP0197359A1 EP86103528A EP86103528A EP0197359A1 EP 0197359 A1 EP0197359 A1 EP 0197359A1 EP 86103528 A EP86103528 A EP 86103528A EP 86103528 A EP86103528 A EP 86103528A EP 0197359 A1 EP0197359 A1 EP 0197359A1
Authority
EP
European Patent Office
Prior art keywords
projectile
swirl
rotor
axis
restlessness
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
EP86103528A
Other languages
German (de)
English (en)
Other versions
EP0197359B1 (fr
Inventor
Robert Apothéloz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rheinmetall Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Werkzeugmaschinenfabrik Oerlikon Buhrle AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Publication of EP0197359A1 publication Critical patent/EP0197359A1/fr
Application granted granted Critical
Publication of EP0197359B1 publication Critical patent/EP0197359B1/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
    • F42C9/00—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition
    • F42C9/02—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means
    • F42C9/04—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means by spring motor
    • F42C9/048—Unlocking of clockwork mechanisms, e.g. by inertia or centrifugal forces; Means for disconnecting the clockwork mechanism from the setting mechanism

Definitions

  • the invention relates to a safety device for a swirl projectile detonator with an escapement which has an unrest.
  • the swirl securing member consists of a cylindrical housing, in which a spring-loaded piston, which can be pushed into a bore in the rotor, is arranged and which, due to the swirl, counteracts the force of the spring the bore of the rotor is displaceable and three recesses for a locking body are arranged in the piston.
  • the blocking body protrudes from the first recess into a bore in the cylindrical housing and lies against a shoulder of the housing of the securing device. From the second recess of the piston, the locking body only protrudes into the bore of the cylindrical housing. In the third recess of the piston, the locking body is completely in this piston without protruding from this recess.
  • the known securing device for the swirl projectile detonator can be considerably simplified.
  • the simplification is achieved in that the unrest is asymmetrical, so that the center of gravity of the unrest is outside the swivel axis of this unrest and that the swivel axis of the unrest coincides with the swirl axis when the inhibitor mechanism runs off
  • the inhibitor cannot run at all during the spin acceleration, as will be explained further below.
  • the swirl acceleration thus prevents the projectile detonator from igniting prematurely, because the swirl forces are necessary for the inhibitor to run at all; on the other hand, the swirl acceleration forces prevent the unrest from moving prematurely.
  • each projectile fuse must have two independent safety devices.
  • the first security organ is e.g. used one that responds to launch acceleration.
  • As a second security organ e.g. used one that responds to the twist. This second safety element can be omitted if the unrest is designed asymmetrically according to the invention.
  • FIGS. 1-3 Before the prior art is explained with reference to FIGS. 1-3, the subject matter of the invention will first be explained with reference to FIG. 4.
  • the restlessness 14 consists of a disk-shaped body 36 which has two symmetrical, trapezoidal recesses 37, and a small central bore 38 through which an axis 15 projects, about which the restlessness 14 can be pivoted in both directions of rotation.
  • the force D generated by the swirl is radial to the swirl axis, while the force B generated during the swirl acceleration acts tangentially to the axis 15 at the center of gravity S and generates a torque which prevents the unrest from swinging back and forth as long as the force B is effective.
  • an additional body 40 can be attached to the unrest 14, through which the center of gravity S would also be shifted, although it would come to a different location.
  • the known securing device 10 contains a rotor 11 (FIG. 2) which is rotatably mounted about an axis 12.
  • An ignition capsule 13 is fastened in this rotor 11.
  • the unrest 14, which is also referred to as a vibrating anchor, is mounted in the rotor 11.
  • the restlessness 14 is rotatable about a pin 15 which is arranged displaceably in the rotor 11 and which is in its uppermost position in FIG. 1.
  • the axis of the bolt 15 coincides with the swirl axis of the projectile, as can be seen from FIG. 2.
  • the restlessness 14, which can be pivoted about the pin 15, works together with a gearwheel 16.
  • the gearwheel 16 With each pivoting movement of the restlessness 14, the toothed wheel 16 can rotate one tooth further.
  • the gearwheel 16 is driven by a toothed segment 17 (FIG. 3) via a transmission which consists of four gearwheels 18, 19, 20, 21.
  • the gear 18 is rigidly connected to the gear 16.
  • the two gears 16 and 18 are rotatably supported about an axis 22.
  • the gearwheels 19 and20 are also rigidly connected to one another and are rotatably mounted about an axis 23, the gearwheel 19 meshing with the gearwheel 18 and the gearwheel 20 with the gearwheel 21.
  • the gear 21 is rotatable about an axis 24 and is in engagement with the toothed segment 17.
  • the toothed segment 17 rotates under the effect of the swirl from the position shown in FIG. 3 in the direction of arrow A and thereby drives the toothed wheel 16 via the toothed wheels 21, 20, 19 and 18. and is swung here.
  • the toothed segment 17 is mounted on the axis 12 independently of the rotor 11. As can be seen from FIGS. 1 and 3, the toothed segment 17 can hit the primer 13 when it rotates counterclockwise and can also rotate the rotor 11 in the direction of arrow A.
  • the aforementioned bolt 15 will protrude with its conical head 25 into a bore 26 in the housing 27 (Fig. 1), whereby the rotor 11 is secured against unintentional rotation.
  • the rotor 11 is secured against rotation in the known device before firing by two securing members 29 and 30, of which the first securing member 29 responds to the swirl, for releasing the roto 11 into its focus and from which the second securing member 30 to the down shot acceleration responds to release the rotor 11 in its focus.
  • the second securing member 30 has a cylindrical housing 31 in which a ball 32 is located in a longitudinal bore and is pressed against a second, small ball 33 by a spring, not shown. This small ball 33 can be in a recess 34 of the rotor 11 (FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Lighters Containing Fuel (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Fuses (AREA)
EP86103528A 1985-04-04 1986-03-15 Dispositif de sécurité pour fusée actionnée par la rotation du projectile Expired EP0197359B1 (fr)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=4211455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86103528A Expired EP0197359B1 (fr) 1985-04-04 1986-03-15 Dispositif de sécurité pour fusée actionnée par la rotation du projectile

Country Status (6)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796532A (en) * 1987-11-12 1989-01-10 Magnavox Government And Industrial Electronics Company Safe and arm device for spinning munitions
US4869172A (en) * 1987-11-12 1989-09-26 Magnavox Government And Industrial Electronics Company Safe and arm device for spinning munitions
DE10000177A1 (de) * 2000-01-05 2001-07-12 Junghans Feinwerktechnik Gmbh Zündeinrichtung, insbesondere für eine Mörsergranate
DE10111714C1 (de) * 2001-03-12 2002-10-10 Nico Pyrotechnik Zünder für ein aus einem Rohr mit Drall abzuschießendes Geschoss

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1032129B (de) * 1953-07-31 1958-06-12 Onera (Off Nat Aerospatiale) Mechanischer Erzeuger zeitgleicher Schwingungen
FR2097946A5 (fr) * 1970-06-26 1972-03-03 Oerlikon Buehrle Ag
US3670655A (en) * 1970-06-09 1972-06-20 Delaware Valley Armaments Inc Timing mechanism

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2457254A (en) * 1947-09-18 1948-12-28 Borg George W Corp Delay arming device for fuses
CH464015A (fr) * 1967-10-05 1968-10-15 Mefina Sa Fusée pour projectile girant
CH531158A (fr) * 1970-11-03 1972-11-30 Mefina Sa Dispositif de sécurité pour fusée de projectile à mouvement giratoire
BE859035A (fr) * 1976-11-05 1978-01-16 Sormel Sa Dispositif de securite a volet pour chaine pyrotechnique
US4419934A (en) * 1980-08-28 1983-12-13 Werkzeugmaschinenfabrik Oerlikon-Buhrle Ag Safety apparatus for a spinning projectile fuse
DE3107110C2 (de) * 1981-02-26 1984-03-29 Gebrüder Junghans GmbH, 7230 Schramberg Sicherungsvorrichtung für Zünder von Drallgeschossen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1032129B (de) * 1953-07-31 1958-06-12 Onera (Off Nat Aerospatiale) Mechanischer Erzeuger zeitgleicher Schwingungen
US3670655A (en) * 1970-06-09 1972-06-20 Delaware Valley Armaments Inc Timing mechanism
FR2097946A5 (fr) * 1970-06-26 1972-03-03 Oerlikon Buehrle Ag

Also Published As

Publication number Publication date
JPH0262799B2 (fr) 1990-12-26
US4677914A (en) 1987-07-07
NO168270B (no) 1991-10-21
JPS61231400A (ja) 1986-10-15
DE3660940D1 (en) 1988-11-17
CA1272908A (fr) 1990-08-21
EP0197359B1 (fr) 1988-10-12
NO168270C (no) 1992-01-29
NO861016L (no) 1986-10-06

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