EP0164313B1 - Corps polaire pour un allumeur électrique, son procédé de fabrication et son application - Google Patents

Corps polaire pour un allumeur électrique, son procédé de fabrication et son application Download PDF

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Publication number
EP0164313B1
EP0164313B1 EP85810229A EP85810229A EP0164313B1 EP 0164313 B1 EP0164313 B1 EP 0164313B1 EP 85810229 A EP85810229 A EP 85810229A EP 85810229 A EP85810229 A EP 85810229A EP 0164313 B1 EP0164313 B1 EP 0164313B1
Authority
EP
European Patent Office
Prior art keywords
carrier element
pole body
metallic layer
metal layer
elevation
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
EP85810229A
Other languages
German (de)
English (en)
Other versions
EP0164313A1 (fr
Inventor
Alfred Wittwer
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.)
Uhde Inventa Fischer AG
Original Assignee
EMS Inventa 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 EMS Inventa AG filed Critical EMS Inventa AG
Priority to AT85810229T priority Critical patent/ATE30959T1/de
Publication of EP0164313A1 publication Critical patent/EP0164313A1/fr
Application granted granted Critical
Publication of EP0164313B1 publication Critical patent/EP0164313B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C11/00—Combinations of two or more stoves or ranges, e.g. each having a different kind of energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/08—Primers; Detonators
    • F42C19/12—Primers; Detonators electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C11/00—Electric fuzes

Definitions

  • the invention relates to a pole body for an electrical ignition device, consisting of an insulating carrier element on which a metal layer forms at least one ignition bridge, a method for its production and its use.
  • Pole bodies for electrical ignition devices of the type described at the outset are known (DE-A-2 840 738).
  • both poles protrude into a conductive metal layer, the one pole being surrounded by a metal layer with an insulating cutout in contact with the initial explosive.
  • a flat metal surface acts as an ignition bridge between the ends of the spiral recess.
  • Such cutouts are generated in a simple manner by means of a laser beam.
  • An electrical ignition device is also known (DE-A-2 816 300), in which an ignition bridge is attached to a flat metal surface through a circular recess.
  • Thin ignition bridges of this type have generally proven themselves well for electrical detonators with extremely short ignition times, but have the disadvantage that their manufacture by the use of laser beams, caused by the costly equipment required, is extremely complex. The laser beam generating devices also require careful maintenance.
  • the object of the invention is to provide a pole body which can be economically produced in large numbers without the need for complex engravings in a metal layer to produce insulation and to form an ignition bridge.
  • the other task is to provide a fully combustible igniter. It is also the task of creating a method for producing this pole body.
  • the above-mentioned object is achieved in that the insulating carrier element projects partially into the metal layer and forms a plane with the surface of the metal layer.
  • the simplest version of the polar body consists of a carrier element and a metal layer.
  • the carrier element isolates the conductive layer from the parts that protrude into the metal layer and just terminate with it.
  • the carrier element is provided on both sides with a closed annular elevation on one side and with another open elevation on the other side, which is interrupted by at least one ignition bridge. These elevations form a unit with the carrier element and are frustoconical in the finished pole body.
  • the open elevation is of spiral design and a bridge is provided between its ends.
  • An ignition bridge forms approximately parallel between the ends of the elevation.
  • the carrier element is provided with a shoulder on the edge. This paragraph facilitates the installation of the pole body in an electrical ignition device, for example by simply clamping it in the corresponding recess in the ignition device.
  • the carrier element is provided with a central bore and at least two edge bores.
  • the electrical connections can expediently be fastened in these bores.
  • the carrier element is made of a homogeneous plastic part. This is done using a plastic that is easy to process by injection molding, has chemical resistance and can withstand higher temperatures.
  • the following are preferably suitable as plastics for the carrier element of the pole body according to the invention: polyamides, polycarbonates, polyoximethylenes, polytetrafluoroethylenes, polyurethanes, epoxy resins, urea-formandehyde resins, crosslinked polyethylenes, in particular filled polyamides or epoxy resins.
  • pole body is completely combustible.
  • plastics have the advantage that they burn completely in practice in a primer.
  • the carrier element provided with a central bore and at least two edge bores made of plastic in a first process step on the side with a closed annular elevation with a wedge-shaped profile and on the other side with an open elevation coated with at least one metal layer and the bores are coated through and that in a second process step the tips of the elevations are removed up to the level of the metal layer.
  • the elevations can deviate from a constant arch shape and can be zigzag, wavy or meandering. It is advantageous and particularly economical to produce the polar body in only two main process steps.
  • the metal layer is applied mechanically and / or chemically and / or by vapor deposition in a high vacuum to the carrier element. This creates thin, electrically conductive and mechanically strong layers.
  • a metal layer is first vapor-deposited in a high vacuum, a metal layer is chemically deposited thereon and another metal layer is vapor-deposited.
  • the surveys by melting and / or abrasion fen can be removed.
  • the melting and / or grinding removes the elevations down to the level of the metal layer. This creates clean surfaces that have the required precision in the micrometer range.
  • the pole body is particularly suitable for use in electrical ignition devices for initiating ammunition bodies, projectiles, rockets, explosive devices and shaped charges.
  • a pole body is designated by 1. It consists of a carrier element 2 made of plastic, which has on one side a truncated cone-shaped elevation 3, which in the simplest case forms a circular ring. However, this elevation 3 can also have a different geometry, but must be closed.
  • the outer circumference of the carrier element 2 is provided with a shoulder 4.
  • the opposite side has an elevation 5 of the same type which is smaller in diameter, but which is not closed into a ring.
  • a central hole 6 and one or more holes 7, 7 ' are made in the carrier element 2.
  • the pole body 1 is plated over its entire surface, also in the interior of the bores 6, 7, 7 ', with a metal layer 8, which as a rule consists of several layers.
  • the electrical connections x, y can be made both in the bores 6 and 7, or 7 ', and as alternative connections v, w on the metal layer at the points indicated.
  • the shoulder 4 of the carrier element 2 forms a peripheral flange and is used for fastening in an ignition device.
  • FIG 3 shows the bottom view of the pole body 1 with an ignition bridge 9.
  • the ignition bridge 9 is formed between the ends as a recess in an annular elevation 5 present in the carrier element 2.
  • the elevation 5 ' is interrupted by a plurality of ignition bridges 9', four ignition bridges 9 'being shown, for example.
  • an ignition bridge 9 "lies between the ends of a spiral elevation 5".
  • FIG. 6 shows the unprocessed carrier element 2 with the conical upper elevations 3, the igniter-side elevations 5 and the shoulder 4 as it is removed from the injection mold as a blank.
  • the elevations 3, 5 are provided with tips 30 and 50.
  • the carrier element 2 described in FIG. 6 is coated with a metal layer 8, for example by vapor deposition in a high vacuum, both on its surfaces and inside the bores 6, 7, 7 '.
  • a metal layer 8 for example by vapor deposition in a high vacuum, both on its surfaces and inside the bores 6, 7, 7 '.
  • Suitable as metals are individually or as alloys: Ni, Cr, Al, Pd, Ta, Mn, Ba, Ti, Re, Au.
  • a further metal layer made of Ag or Au in the range from 1 to 50 ⁇ m is applied chemically.
  • a further layer can be evaporated in a known manner with the metals mentioned in a high vacuum.
  • both sides are preferably leveled simultaneously by melting or grinding.
  • a metallic surface is obtained which is only separated by the insulating plastic surface and which represents the desired ignition bridge 9.
  • the pole body 1 according to the invention has the advantage that, due to the gapless connection between the insulating support element 2 and the conductive part of the metal layers 8, it is very simple in construction, compact, stable and yet practically completely combustible, can be easily installed in an ignition device and in large quantities can be produced economically.
  • the pole body 1 is suitable for use in electrical ignition devices of all kinds, in particular for ammunition bodies.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Manufacture Of Switches (AREA)
  • Ceramic Products (AREA)
  • Fishing Rods (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Fuses (AREA)

Claims (12)

1. Corps polaire (1) pour un allumeur électrique, comprenant un élément de support (2) sur lequel une couche métallique (8) forme au moins un pont d'allumage (9, 9', 9"), caractérisé en ce que l'élément de support (2) dépasse partiellement dans la couche métallique (8) et forme un plan avec la surface de ladite couche métallique (8) (fig. 1).
2. Corps polaire selon la revendication 1, caractérisé en ce que l'élément de support (2) est muni d'une éminence annulaire fermée (3) sur une face et d'une éminence ouverte (5, 5', 5") sur l'autre face laquelle est interrompue par au moins un pont d'allumage (9, 9', 9") (fig. 2, 3, 4).
3. Corps polaire selon la revendication 2, caractérisé en ce que l'éminence ouverte (5") est conformée en spirale et qu'un pont d'allumage (9") est prévu entre ses extrémités (fig. 5).
4. Corps polaire selon la revendication 1, caractérisé en ce que l'élément de support (2) est muni d'un épaulement (4) du côté du bord (fig. 1 ).
5. Corps polaire selon la revendication 1, caractérisé en ce que l'élément de support (2) comporte un alésage central (6) et au moins deux alésages marginaux (7, 7") (fig. 1
6. Corps polaire selon la revendication 1, caractérisé en ce que l'élément de support (2) est réalisé à partir d'une pièce homogène en matière plastique (fig. 6).
7. Corps polaire selon la revendication 1, caractérisé en ce qu'il est entièrement combustible.
8. Procédé de fabrication d'un corps polaire (1) selon la revendication 1, caractérisé en ce que, dans une première phase opératoire, au moins une couche métallique (8) est appliquée sur l'élément de support (2) en matière plastique avec un alésage central (6) et au moins deux alésages marginaux (7, 7'), sur la face comportant une éminence annulaire fermée (3) qui présente un profil en coin et sur l'autre face comportant une éminence ouverte (5, 5', 5") ainsi que sur les faces intérieures des alésages; et que, dans une deuxième phase, les pointes (30, 50) des éminences (3, 5, 5', 5") sont éliminées jusqu'au niveau de la couche métallique (8) (fig. 6; fig. 1).
9. Procédé selon la revendication 8, caractérisé en ce que le couche métallique (8) est appliquée de manière mécanique et/ou chimique et/ou par métallisation sous vide poussé sur l'élément de support (2).
10. Procédé selon la revendication 9, caractérisé en ce que les éminences (3, 5, 5', 5") sont supprimées en même temps sur les deux faces de l'élément de support (2) jusqu'au niveau de la couche métallique (8).
11. Procédé selon la revendication 10, caractérisé en ce que les éminences (3, 5, 5', 5") sont éliminées par fusion et/ou meulage.
12. Utilisation du corps polaire (1) selon les revendications 1 à 8 dans des allumeurs électriques pour l'amorçage de munitions, projectiles, fusées, engins explosifs et charges creuses.
EP85810229A 1984-05-24 1985-05-15 Corps polaire pour un allumeur électrique, son procédé de fabrication et son application Expired EP0164313B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85810229T ATE30959T1 (de) 1984-05-24 1985-05-15 Polkoerper fuer eine elektrische zuendvorrichtung, verfahren zu dessen herstellung und dessen verwendung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH254884 1984-05-24
CH2548/84 1984-05-24

Publications (2)

Publication Number Publication Date
EP0164313A1 EP0164313A1 (fr) 1985-12-11
EP0164313B1 true EP0164313B1 (fr) 1987-11-19

Family

ID=4236269

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85810229A Expired EP0164313B1 (fr) 1984-05-24 1985-05-15 Corps polaire pour un allumeur électrique, son procédé de fabrication et son application

Country Status (7)

Country Link
US (1) US4715280A (fr)
EP (1) EP0164313B1 (fr)
JP (1) JPS612000A (fr)
KR (1) KR850008216A (fr)
AT (1) ATE30959T1 (fr)
DE (1) DE3561027D1 (fr)
ZA (1) ZA852777B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8905747D0 (en) * 1989-03-13 1989-04-26 Secr Defence Pyrotechnic material
US5266132A (en) * 1991-10-08 1993-11-30 The United States Of America As Represented By The United States Department Of Energy Energetic composites
US5912427A (en) * 1993-02-26 1999-06-15 Quantic Industries, Inc. Semiconductor bridge explosive device
US5505799A (en) * 1993-09-19 1996-04-09 Regents Of The University Of California Nanoengineered explosives
US6199484B1 (en) * 1997-01-06 2001-03-13 The Ensign-Bickford Company Voltage-protected semiconductor bridge igniter elements
JPH10253059A (ja) * 1997-03-11 1998-09-25 Nikko Co 火薬点火発熱具用回路板の製造方法
US6553911B1 (en) 1997-04-30 2003-04-29 Erico International Corporation Exothermic reactions and methods
US6598532B2 (en) * 2001-08-14 2003-07-29 Donald G. Gerard Electric circuit for an electrically dischargeable primer
DE60325939D1 (de) 2002-01-25 2009-03-12 Erico Int Corp Schweissvorrichtung
WO2003087705A1 (fr) * 2002-04-16 2003-10-23 Nippon Kayaku Kabushiki-Kaisha Generateur de gaz
CN119374430A (zh) * 2023-07-25 2025-01-28 贵州全安密灵科技有限公司 等离子点火件及含有其的电子雷管

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL292575A (fr) * 1962-05-10
DE1771334A1 (de) * 1968-05-08 1971-12-16 Dynamit Nobel Ag Zuendhuetchenkoerper fuer elektrische Zuendung
DE2020016C3 (de) * 1970-04-24 1974-12-12 Dynamit Nobel Ag, 5210 Troisdorf Metallschichtzündmittel
US3669022A (en) * 1970-08-05 1972-06-13 Iit Res Inst Thin film device
DE2245308C3 (de) * 1972-09-15 1981-05-07 Dynamit Nobel Ag, 5210 Troisdorf Elektrisches Brückenzündmittel
DE2443793C2 (de) * 1974-09-13 1986-05-07 Dynamit Nobel Ag, 5210 Troisdorf Kombiniertes Anzündhütchen
DE2551473C2 (de) * 1975-11-15 1983-10-20 Diehl GmbH & Co, 8500 Nürnberg Zündelement für Munition
SE431681B (sv) * 1977-04-19 1984-02-20 Bofors Ab Eltenddon
CH643056A5 (de) * 1978-08-10 1984-05-15 Inventa Ag Elektrische zuendvorrichtung.
SE427216B (sv) * 1979-09-03 1983-03-14 Bofors Ab Eltenddon, foretredesvis for artilleriammunition
US4409262A (en) * 1982-02-01 1983-10-11 The United States Of America As Represented By The Secretary Of The Navy Fabrication of submicron-wide lines with shadow depositions
SE430723B (sv) * 1982-04-30 1983-12-05 Bofors Ab Forfarande och anordning for att astadkomma en veldefinerad och elektriskt ledande brygga mellan tva polkroppar forfarande och anordning for att astadkomma en veldefinerad och elektriskt ledande brygga mellan tva polkroppar
US4576094A (en) * 1985-08-28 1986-03-18 The United States Of America As Represented By The Secretary Of The Army Fabrication of expandable polystyrene plastic ignition containers

Also Published As

Publication number Publication date
US4715280A (en) 1987-12-29
JPS612000A (ja) 1986-01-07
EP0164313A1 (fr) 1985-12-11
DE3561027D1 (en) 1987-12-23
ATE30959T1 (de) 1987-12-15
ZA852777B (en) 1985-11-27
KR850008216A (ko) 1985-12-13

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