Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F42—AMMUNITION; BLASTING
  • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
  • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
• • 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
  • F42C15/34—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by a blocking-member in the pyrotechnic or explosive train between primer and main charge

Definitions

• the invention relates to an igniter for a projectile to be fired from a tube with a swirl according to the preamble of patent claim 1.
• Such projectiles, the z. B. from several pyrotechnic charges for triggering an irk bin should be equipped with a safety device that interrupts the ignition chain in a first position and when the projectile is shot through its initial acceleration and its swirl passes from this first position into a second position releasing the ignition chain , This prevents the ignition chain from igniting even though the projectile is at rest, e.g. B. is still in the barrel.
• a detonator for projectiles which has a safety device with disc-shaped elements, for. B. has a plastically deformable plate. This plate is arranged between a body containing the primer and the part of the projectile containing an opening leading to the charge to be ignited. This arrangement is intended to prevent the explosive charge of the projectile from being detonated in the secure position of the body receiving it in the event of an unwanted ignition of the squib.
• Impact igniter which ignites the effect of the impact. If this detonator does not work, it must be ensured that the effect is triggered at least after a certain time or self-dismantled in order to safely clear the
• Safety detonator provided with an ignition chain, which consists of at least one igniter ignited when the effect bullet was fired and at least one further charge, in particular a delay charge, via which, after its combustion, the actual active charge z. B. about
• Detonating cords or booster charges are fired about four seconds after the launch.
• Such ammunition is usually fired from short-barreled weapons or from short drum magazines.
• magazine weapons the magazine is usually covered by a disk that only releases the cartridge that is actually to be fired, whereas all other magazine barrels are covered by the disk.
• the delay charge for the safety fuse is still ignited, for example by a too weak propellant charge or solely by the primer. Since the ammunition now does not leave the barrel of the firearm, be it a normal barrel weapon or a magazine weapon, the effect is triggered after the specified delay time of about 4 seconds. This can be used for bystanders and the shooter himself a high risk of injury, especially if a magazine weapon is used. As soon as the launch is triggered there, the delay charge for the safety fuse is still ignited, for example by a too weak propellant charge or solely by the primer. Since the ammunition now does not leave the barrel of the firearm, be it a normal barrel weapon or a magazine weapon, the effect is triggered after the specified delay time of about 4 seconds. This can be used for bystanders and the shooter himself a high risk of injury, especially if a magazine weapon is used. As soon as the launch is triggered there, the
• Delay ignition chain is located, is closed at the front.
• a safety device into the ignition chain to trigger the active effect, which interrupts the ignition chain in a first position and, when the projectile is shot down, by its initial acceleration and its swirl from this first position into a second releasing the ignition chain Position passes.
• Such safety devices are known for projectile detonators in a large number of variants.
• the invention has for its object to provide such a safety device for a projectile of the type in question, which is simple in construction, inexpensive to manufacture and reliably ensures that the effective effect is actually only ignited when the projectile has the initial acceleration associated with a launch and experienced the twist.
• the securing device has a disk-shaped element with a central area and an edge area surrounding it. Only the central area interrupts the ignition chain and is mechanically supported by a holding device and on Held place.
• the central area and the peripheral area are connected to one another via a predetermined breaking point that tears open during the initial acceleration of the projectile.
• a collecting space is provided around the holding device, which the at the initial acceleration of the
• Such a safety device for an igniter is very simple and inexpensive to manufacture, since the safety device z. B. is a correspondingly prepared simple plastic disc.
• the initial acceleration affects both the central area and the peripheral area. However, since only the central area is supported, this initial acceleration shears off the edge area at the predetermined breaking point from the central area and falls into the catchment area located behind the edge area in the direction of flight of the projectile. This has a thickness which corresponds to at least twice the thickness of the edge area, so that when the edge area lies in the receiving space, it is removed from the plane of the central area. The swirl now acts on this central area, so that this central area is more or less removed from the ignition chain and this is released thereby.
• the swirl and the swirl acceleration are usually so large that the center area lies eccentrically to the swirl axis of the projectile due to the remnants of the predetermined breaking point alone, so that the centrifugal forces remove the central area from the ignition chain. It is of course possible to deliberately set the center of mass of the central area eccentrically to the swirl axis of the projectile.
• the predetermined breaking point can, for. B. by reducing the thickness of the material of the disc-shaped element in the boundary region between the central region and the edge region.
• the central area and the edge area can be connected to one another via webs. Another possibility is to design the central area and the edge area as individual parts and to connect these with a connecting element, e.g. B. to connect a self-adhesive film that forms the predetermined breaking point.
• FIG. 1 shows a partially cut effect ammunition from the cartridge case and the projectile with a disk-shaped securing device for interrupting the ignition chain for an effective effect
• FIG. 2 shows a cross section through the rear area of a projectile with a disk-shaped securing device that is slightly modified compared to FIG. 1;
• FIG. 3 shows a bottom view of the disk-shaped securing device according to FIG. 2;
• Figure 4 shows another embodiment of a disk-shaped securing device according to the invention.
• Figure 5 shows another embodiment of a disk-shaped safety device according to the invention.
• FIG. 1 an effect ammunition with a cartridge case 2 and a projectile 3 inserted therein is shown partially in section.
• a primer 4 is arranged, with which one in one Cartridge 5 located propellant charge 6 is ignited.
• Cartridge 5 has overflow openings which open into a pressure chamber 8 between cartridge case 2 and floor 3.
• the floor 3 has in its bow a cargo space 10 in which an effect charge, for. B. CS tear gas or the like is located, which can be triggered pyrotechnically. This is usually done by an impact detonator 11, which is only indicated here as a switch, and which ignites a pyrotechnic ignition charge 12 when the projectile hits, which in turn triggers the active charge present in the cargo space 10.
• an effect charge for. B. CS tear gas or the like
• an impact detonator 11 which is only indicated here as a switch, and which ignites a pyrotechnic ignition charge 12 when the projectile hits, which in turn triggers the active charge present in the cargo space 10.
• a delay charge 13 is also ignited by its propellant gases, which, however, is divided into two parts 13a and 13b.
• the partial charges 13a and 13b are separated from one another by an ignition gap 14.
• a disk 15 is inserted as a safety device for interrupting or releasing the ignition chain between the two delay charges 13a and 13b, which disk consists of a central area 16 and an edge area 17 surrounding it, which are separated from one another by a predetermined breaking point 18.
• the central area 16 is one of the
• Retention charge charge 13a surrounding holding device for. B. a base 19 supported.
• the edge region 17 has a greater thickness than the central region 16, the step between the central region 16 and the edge region 17 being essentially given by the predetermined breaking point 18. With this step, the disk 15 bears against the base 19, as a result of which the disk 15 is held in its radial position.
• the disc 15 also lies with its top in the direction of flight of the projectile 3 on the ceiling of a Collection space 21 in which the disc 15 is held laterally with little play.
• This collecting space 21 has one
• Thickness which, viewed in the direction of flight of the projectile 3, corresponds to at least twice the thickness of the edge region 17.
• the predetermined breaking point 18 of the pane 15 breaks open, as a result of which the edge region 17 is moved against the bottom of the collecting space 21 and is preferably clamped in this position.
• the side wall of the collecting space 21 is slightly conical to the inside or has slipped, etc.
• the central region 16 is then flung outwards from the position that locks the ignition chain and is also collected in the collecting space 21 above the edge region 17.
• the ignition chain is thus released in the area of the delay charge 13.
• the delay charge 13a can then ignite the delay charge 13b and this the active charge in the cargo space 10.
• the delay charge 13a can have a conical recess in a known manner, through which the detonation waves within the delay charge 13a are focused and centered on the delay charge 13b and ignite it.
• Load space 10 detonated and projectile 3 can be removed from the barrel of the weapon without risk.
• the delay charge 13a ignites the second delay charge 13b of the delay charge 13. Should then the impact detonator 11 does not function when the projectile 3 is impacted and thus the active charge in the cargo space 10 is not ignited, this is ignited after the delay charge 13b has burned down.
• the igniter according to FIG. 1 is shown in FIG. 2 with a small modification of the disk 15.
• the circular disk 15 in turn consists of a central area 16 and an edge area 17 surrounding it, which is separated from the central area 16 by a predetermined breaking point 18 in the form of a notch.
• the center of mass S of the central area 16 is located outside the longitudinal and swirl axis A of the projectile.
• the central area 16 is also very quickly removed from the ignition chain due to the eccentric position of the center of mass S, so that the latter is activated via the delay charges 13a and 13b can ignite.
• a disc 15 is shown with a central area 16 and an edge area 17, which over several Web 24 are connected to each other, the
• FIG. 5 shows a disk 15, which in turn is constructed from a central area 16 and an edge area 17.
• the central area 16 and the edge area 17 are individual parts, i. H. in the simplest case, a small circular disk or an annular disk.
• the annular disk as the edge area 17 in turn has a greater thickness than the central area 16.
• the two individual parts 16 and 17 are connected to one another by a self-adhesive plastic film 25, which takes over the function of the predetermined breaking point 18.
• the plastic film 25 is connected to the underside of the central area 16 and a step 26 in the edge area 17, so that when the edge area 17 is separated from the central area 16 during the initial acceleration of the projectile 3, the plastic film 25 also from the central area Area 16 is replaced.
• the central area 16 again preferably has a center of gravity S eccentric to the swirl axis A of the projectile 3, so that after the edge area 17 has been sheared off, the central area 16 is quickly conveyed into the collecting space 21.
• the plastic film 25 is designed in such a way that it enables the delay charges 13a and 13b to ignite.
• the disk 15 should be made of a material with a low specific mass, so that the small disk accommodated in the collecting space 21 only exerts such a small imbalance on the projectile 3 according to the central area 16 that the trajectory of the projectile 3 does not is disturbed.
• the base does not have to be a compact base 19, but can be z.
• Support sections can be realized.
• the predetermined breaking point 18 of the disk 15 breaks open during the initial acceleration of the projectile 3 in the firing run, so that the central region 16, which interrupts the ignition chain, is then also quickly transported out of the ignition chain.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Emergency Lowering Means (AREA)
• Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
• Automotive Seat Belt Assembly (AREA)
• Catching Or Destruction (AREA)
• Toys (AREA)
• Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
• Air Bags (AREA)
• Portable Nailing Machines And Staplers (AREA)
• Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
• Iron Core Of Rotating Electric Machines (AREA)
• Ignition Installations For Internal Combustion Engines (AREA)

Applications Claiming Priority (3)

Publications (2)

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Family Applications (1)

Country Status (11)

Families Citing this family (6)

Family Cites Families (15)

• 2001
  • 2001-03-12 DE DE10111714A patent/DE10111714C1/de not_active Expired - Fee Related
• 2002
  • 2002-03-12 DE DE50213267T patent/DE50213267D1/de not_active Expired - Lifetime
  • 2002-03-12 AT AT02727213T patent/ATE422657T1/de not_active IP Right Cessation
  • 2002-03-12 US US10/471,869 patent/US6880464B2/en not_active Expired - Lifetime
  • 2002-03-12 WO PCT/DE2002/000864 patent/WO2002073119A1/fr active IP Right Grant
  • 2002-03-12 KR KR10-2003-7011893A patent/KR20030090667A/ko not_active Application Discontinuation
  • 2002-03-12 CA CA2440731A patent/CA2440731C/fr not_active Expired - Fee Related
  • 2002-03-12 AU AU2002257524A patent/AU2002257524B2/en not_active Expired
  • 2002-03-12 ES ES02727213T patent/ES2324096T3/es not_active Expired - Lifetime
  • 2002-03-12 EP EP02727213A patent/EP1370825B1/fr not_active Expired - Lifetime
  • 2002-03-12 JP JP2002572337A patent/JP4053428B2/ja not_active Expired - Fee Related
• 2003
  • 2003-09-08 NO NO20033952A patent/NO327470B1/no not_active IP Right Cessation

Non-Patent Citations (1)

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