EP2508838A1 - Squib, pyrotechnical component and method for manufacturing such a pyrotechnical component - Google Patents

Squib, pyrotechnical component and method for manufacturing such a pyrotechnical component Download PDF

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Publication number
EP2508838A1
EP2508838A1 EP12156391A EP12156391A EP2508838A1 EP 2508838 A1 EP2508838 A1 EP 2508838A1 EP 12156391 A EP12156391 A EP 12156391A EP 12156391 A EP12156391 A EP 12156391A EP 2508838 A1 EP2508838 A1 EP 2508838A1
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EP
European Patent Office
Prior art keywords
pyrotechnic
igniter
cell
housing
composition
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
EP12156391A
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German (de)
French (fr)
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EP2508838B1 (en
Inventor
Gérard Tanguy
Jean Luc Abadie
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.)
Nexter Munitions SA
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Nexter Munitions SA
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Publication date
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Publication of EP2508838A1 publication Critical patent/EP2508838A1/en
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Publication of EP2508838B1 publication Critical patent/EP2508838B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/103—Mounting initiator heads in initiators; Sealing-plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/195—Manufacture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/06—Electric contact parts specially adapted for use with electric fuzes

Definitions

  • the technical field of the invention is that of electrical igniters, pyrotechnic components and their manufacturing processes.
  • pyrotechnic components comprising a cell containing several layers of pyrotechnic compositions.
  • an initiation layer which is in contact with an ignition means, for example a hot wire or a conductive layer (thin or thick) or a semiconductor bridge.
  • This initiation layer is most often constituted by a layer of redox composition.
  • the initiation layer is then covered by a layer of a composition providing the desired pyrotechnic effect.
  • the catalogs of the manufacturers of pyrotechnic components include various products (igniters, igniters, detonators, gas generators) which each fulfill a specific function.
  • Each of these products has its own definition and it requires to be manufactured a specific process.
  • the modularity of this component remains insufficient.
  • the non-pyrotechnic input stage and carrying the pins (which is defined in three different versions) must be secured to a primary pyrotechnic composition before final assembly of the component.
  • the washers of pyrotechnic materials must also be made integral with each other with a filling material.
  • the object of the invention is to provide a reduced-size igniter having well-defined pyrotechnic properties which can be compatible with most pyrotechnic requirements.
  • This electric igniter constitutes a pyrotechnic component in itself, and it will form the common base brick around which can be made, in a modular manner, different types of pyrotechnic components.
  • this brick At the level of the definition of this brick will focus the essential characteristics such as sensitivity, protection against electrostatic discharges and electromagnetic radiation, hermeticity and connectivity interface.
  • the components according to the invention will use this pyrotechnic brick associated with other components that will depend on the desired pyrotechnic effect for the final component.
  • the assembly method according to the invention will make it possible to implement the modularity by ensuring a simple and fast assembly of any type of pyrotechnic component.
  • the delicate pyrotechnic operations will be concentrated at the level of the brick constituted by the base igniter. This igniter can be manufactured in large quantities and at a lower cost because it is common to all other components of the catalog.
  • the subject of the invention is an igniter comprising a cavity containing at least one pyrotechnic composition and a means for initiating it by electrical energy which is connected to at least two conductive pins coming out of the cell, an igniter characterized in that that each spindle has at least one groove which is intended to cooperate with a deformable sleeve integral with an electrical connector.
  • the cell will be closed by at least one flap made of flexible plastic material.
  • At least one of the pins may comprise a machining which will be arranged facing a metal bottom of the cell so as to form a zone promoting the flow of electrostatic discharges.
  • the pyrotechnic composition may be chosen from the following compositions: Zirconium / potassium perchlorate, Zirconium - Boron / potassium nitrate.
  • the mass of this pyrotechnic composition will preferably be between 30 milligrams and 50 milligrams.
  • This igniter is the basic brick for modular design of different pyrotechnic components.
  • the invention therefore also relates to a pyrotechnic component comprising such an igniter and which is attached to an electrical connector.
  • the igniter is housed in a housing, the housing also containing at least one pyrotechnic output stage disposed in the vicinity of the igniter.
  • the output stage may be an igniter relay comprising a bucket containing at least one pyrotechnic composition.
  • the output stage may be a detonator relay comprising a bucket containing at least one explosive composition.
  • the output stage may be a gas generator comprising a bucket containing at least one propellant powder or a black powder.
  • the housing may be closed at its rear by a screw cap, so as to achieve a removable component.
  • the housing can be crimped at its rear part on the connector, so as to make a component unmountable.
  • an igniter 1 comprises a metal cell 2 which contains a pyrotechnic composition 3 and an initiation means 4 thereof.
  • the initiation means 4 is a known means using the electrical energy, for example a resistive wire which will be heated by an electric current.
  • Other electrical initiation means could be envisaged, for example a semiconductor bridge or a conductive layer (thin layer made by metal deposition or thick layer obtained by screen-printing).
  • the initiating means 4 are connected to at least two conductive pins 5a and 5b which leave the cell 2 through a rear opening 2a made in a bottom 2b of the cell 2.
  • the pins 5a and 5b are embedded in an insulating pad 6, made of plastic material made of glass or ceramic.
  • FIG. 1 a rear washer 7 and a closing flap 9 which are also made of an electrically insulating plastic material, for example polytetrafluoroethylene (better known under the trademark Teflon).
  • This washer and this paillet have the function of ensuring the hermeticity of the igniter.
  • a plastic material for example polytetrafluoroethylene, or rubber or a rubber derivative
  • a plastic material is a flexible material allowing the compression of the pyrotechnic composition 3 to be maintained in compression and also ensuring the hermeticity of the igniter 1. This material also makes it possible to avoid, during operation, the metal projections downstream of the component which is required in certain applications (thermal batteries for example).
  • the washer 7 may be replaced by a sheet bearing a bore for each pin 5a, 5b.
  • a plastic skirt 8 caps the insulating pad 6 and defines a cylindrical volume that can receive the pyrotechnic composition 3.
  • the cell 2 is crimped (annular area S) on the flake 9.
  • each pin 5a and 5b has a groove 10 near its free end.
  • the figure 3 shows the cooperation of a pin 5a or 5b with a metal sleeve 11 which comprises a front portion formed for example of two flexible tongues 11.1 and 11.2.
  • the sleeve 11 is incorporated in a conductive cylinder 12 which is itself secured to a connector 13 (not shown in detail in the figures).
  • the free ends of the pins 5a and 5b comprise a spherical tip 14a, 14b which, during the establishment of the pin in the sleeve 11, pushes the deformable front portion thereof.
  • Tabs 11.1 and 11.2 of this part deviate and are housed by elasticity in the groove 10, prohibiting further extraction of the pin 5a, 5b.
  • the pyrotechnic composition 3 is a redox type initiation composition.
  • Zirconium (60%) / Boron (12%) %) / potassium nitrate (28%) or any other type of composition by favoring the use of pyrotechnic compositions not containing carcinogenic, mutagenic or reproductive harm materials (so-called CMR materials).
  • the mass of the pyrotechnic composition 3 used will be between 30 milligrams and 50 milligrams.
  • the igniter 1 is thus a pyrotechnic component of very small dimensions and incorporating the minimum amount of pyrotechnic composition capable of generating a usable effect.
  • the goal is to achieve a size igniter similar to the pyrotechnic "beading" used in the field of mines and quarries, but having all the security features of a military component.
  • the pyrotechnic ignition beads generally comprise an oxido-reducing pyrotechnic composition which is deposited by dipping on a conductive filament.
  • the igniter according to the invention uses a pyrotechnic composition which is protected by the metal cell 2, the straw 9 and the washer 7, against shocks and humidity. It also incorporates means ensuring its protection against electrostatic discharges and electromagnetic radiation.
  • the initiation level of this igniter is calibrated by the definition of the initiation means 4.
  • the pin 5b also has a second groove 14 which is arranged facing the bottom 2b of the cell 2. This detail is more particularly visible on the figure 2 .
  • the acute profiles of the edges of the groove 14 are close to the rim of the opening 2a.
  • An area 15 is thus formed which makes it possible to better channel the discharges electrostatic spike effect.
  • Such an arrangement is a means of improving the resistance of the igniter 1 to severe electrostatic environments.
  • This assembly is automatable, which allows the production of large quantities of igniters at a moderate cost.
  • the igniter 1 according to the invention is the basic brick which allows the simplified and modular manufacture of many types of pyrotechnic components.
  • the figure 4 shows an igniter 1 permanently attached to a connector 13 connected to flexible son 16a, 16b.
  • the connector 13 can integrate multiple son variants (length, nature, color ).
  • Such an assembly already constitutes a basic, secure and small pyrotechnic component, which is likely to be used in various applications (thermal batteries, missile equipment ).
  • the figure 5 shows another embodiment of a pyrotechnic component 17 according to the invention.
  • the igniter 1 attached to the electrical connector 13 is housed in a cylindrical housing 18, metal or plastic.
  • the housing 18 also contains at least one pyrotechnic output stage 19 which is arranged in the vicinity of the igniter 1. The distance between the igniter 1 and the output stage 19 is adjusted by means of a spacer washer 20 .
  • the output stage 19 will be defined according to the desired effect and this stage will be free of CMR materials.
  • the output stage 19 may for example be a detonator relay comprising a bucket 21 containing a primary explosive and (optionally) a secondary explosive boot.
  • the bucket 21 contains a layer of primary explosive 22 (for example silver azide) and a secondary explosive priming layer 23 (for example hexogen).
  • the pyrotechnic component thus formed is an electric detonator.
  • the detonation relay 19 comprises a primary explosive layer 22 which, excited by the flame of the igniter, takes the detonation regime and initiates the secondary explosive 23.
  • the amount of primary explosive is about 100 milligrams, the amount of secondary explosive priming depends on the desired power (typically from 100 milligrams to 1 gram).
  • the bucket 21 is closed at each end by a straw 24, 25 (the seal may be completed by a varnishing of the faces of the bucket carrying the straws 24,25). It would be possible to provide a bucket 21 in which the straw 24 would be omitted and replaced by a full-bottomed bucket. The energy of the shock of the explosive will indeed be sufficient to spray the bucket 21.
  • the choice between solid bottom or straw depends on the desired effect: fragmentation with the solid bottom or projection of plate with the straw.
  • the housing 18 is crimped (crimping 26) at its rear portion on the connector 13 which carries a groove 13a for this purpose.
  • the set will be an indovmontable detonator.
  • the figure 6 shows another embodiment of a pyrotechnic component which differs from the previous one only in its dismountable nature.
  • the housing 18 comprises a threaded portion 18a on which is fixed a screw cap 27.
  • the stopper 27 comes to form a stop against the rear of the connector 13.
  • the bucket 21 contains a single layer 28 of a pyrotechnic composition, for example Bore nitrate type. This bucket is of course positioned in place of the bucket 19 of Figures 5 or 6 .
  • the desired pyrotechnic effect is the generation of gas
  • the invention thus makes it easier to define and supply at lower cost a whole range of pyrotechnic components that all use the same igniter 1 equipped with a connector 13.
  • the igniter 1 is then secured to a connector 13.
  • a housing 18 (made of metal or plastic material according to the desired use) is produced.
  • this housing 18 is placed at least one pyrotechnic output stage 19 which will have been manufactured elsewhere and defined according to the nature of the pyrotechnic component 17 that is to be achieved.
  • the igniter 1 and the connector 13 are housed in the housing 18, the igniter 1 being positioned in the vicinity of the pyrotechnic output stage 19.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Air Bags (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

The squib (1) has a cell (2) containing a pyrotechnic composition (3) and a resistive wire (4) for initiation by electrical energy, where the wire is connected to two conductor pins (5a, 5b) projecting out of the cell. Each pin includes a groove (10) intended to cooperate with a deformable sleeve integral with an electrical connector, where the cell is closed by a sealing foil (9) of flexible plastic material. A cutting (14) is arranged opposite to a metal bottom (2b) of the cell so as to form a zone to facilitate flow of electrostatic discharge. Independent claims are also included for the following: (1) a pyrotechnical component (2) a method for manufacturing a pyrotechnical component.

Description

Le domaine technique de l'invention est celui des inflammateurs électriques, des composants pyrotechniques ainsi que de leurs procédés de fabrication.The technical field of the invention is that of electrical igniters, pyrotechnic components and their manufacturing processes.

Il est connu de réaliser des composants pyrotechniques comprenant une alvéole renfermant plusieurs couches de compositions pyrotechniques. Généralement on prévoit une couche d'initiation qui est en contact avec un moyen d'allumage, par exemple un fil chaud ou une couche conductrice (mince ou épaisse) ou encore un pont semi-conducteur. Cette couche d'initiation est le plus souvent constituée par une couche de composition oxydo-réductrice. La couche d'initiation est ensuite couverte par une couche d'une composition assurant l'effet pyrotechnique recherché.It is known to produce pyrotechnic components comprising a cell containing several layers of pyrotechnic compositions. Generally there is provided an initiation layer which is in contact with an ignition means, for example a hot wire or a conductive layer (thin or thick) or a semiconductor bridge. This initiation layer is most often constituted by a layer of redox composition. The initiation layer is then covered by a layer of a composition providing the desired pyrotechnic effect.

On pourra par exemple prévoir une autre couche de composition pyrotechnique pour renforcer la flamme et réaliser un allumeur.For example, it is possible to provide another layer of pyrotechnic composition for reinforcing the flame and producing an igniter.

On pourra prévoir également une couche comprenant un explosif primaire et éventuellement une couche d'un explosif secondaire d'amorçage pour réaliser un détonateur.It may also provide a layer comprising a primary explosive and optionally a layer of a secondary explosive priming to achieve a detonator.

On pourra aussi prévoir une couche d'une composition génératrice de gaz pour réaliser un générateur de gaz, par exemple pour les actionneurs pyromécaniques.It is also possible to provide a layer of a gas-generating composition for producing a gas generator, for example for pyromechanical actuators.

Concrètement les catalogues des fabricants de composants pyrotechniques comportent différents produits (inflammateurs, allumeurs, détonateurs, générateurs de gaz) qui remplissent chacun une fonction bien déterminée. Chacun de ces produits possède sa propre définition et il nécessite pour être fabriqué un processus spécifique.Concretely, the catalogs of the manufacturers of pyrotechnic components include various products (igniters, igniters, detonators, gas generators) which each fulfill a specific function. Each of these products has its own definition and it requires to be manufactured a specific process.

Il en résulte des coûts relativement importants. Les quantités produites pour chaque composant ne permettant pas d'amortir suffisamment les coûts de développement et les coûts fixes de fabrication.This results in relatively large costs. The quantities produced for each component do not allow to sufficiently amortize development costs and fixed manufacturing costs.

Il a été proposé par la demande de brevet EP1995551 de réaliser un composant pyrotechnique sous une forme modulaire en empilant dans un godet différentes rondelles de matériaux pyrotechniques. Ces rondelles se positionnent sur une embase portant des fils d'initiation. Le choix du nombre et de la nature des rondelles utilisées permet de réaliser un type d'initiateur particulier.It was proposed by the patent application EP1995551 to make a pyrotechnic component in a modular form by stacking in a bucket different washers of pyrotechnic materials. These washers are positioned on a base carrying initiation son. The choice of the number and nature of the washers used makes it possible to produce a particular type of initiator.

Cependant la modularité de ce composant reste insuffisante. En particulier l'étage d'entrée non pyrotechnique et portant les broches (qui est défini en trois versions différentes) doit être rendu solidaire d'une composition pyrotechnique primaire avant l'assemblage final du composant. Les rondelles de matériaux pyrotechniques doivent par ailleurs être rendues solidaires les unes des autres avec un matériau de remplissage.However the modularity of this component remains insufficient. In particular the non-pyrotechnic input stage and carrying the pins (which is defined in three different versions) must be secured to a primary pyrotechnic composition before final assembly of the component. The washers of pyrotechnic materials must also be made integral with each other with a filling material.

L'invention a pour but de proposer un inflammateur de dimension réduite et ayant des propriétés pyrotechniques bien définies pouvant être compatibles de la plupart des besoins pyrotechniques.The object of the invention is to provide a reduced-size igniter having well-defined pyrotechnic properties which can be compatible with most pyrotechnic requirements.

Cet inflammateur électrique constitue un composant pyrotechnique en lui-même, et il formera la brique de base commune autour de laquelle pourront être réalisés, de façon modulaire, différents types de composants pyrotechniques.This electric igniter constitutes a pyrotechnic component in itself, and it will form the common base brick around which can be made, in a modular manner, different types of pyrotechnic components.

Au niveau de la définition de cette brique se concentreront les caractéristiques essentielles telles que la sensibilité, la protection vis à vis des décharges électrostatiques et rayonnements électromagnétiques, l'herméticité et l'interface connectique.At the level of the definition of this brick will focus the essential characteristics such as sensitivity, protection against electrostatic discharges and electromagnetic radiation, hermeticity and connectivity interface.

Les composants selon l'invention mettront en oeuvre cette brique pyrotechnique associée à d'autres composants qui dépendront de l'effet pyrotechnique recherché pour le composant final.The components according to the invention will use this pyrotechnic brick associated with other components that will depend on the desired pyrotechnic effect for the final component.

Le procédé d'assemblage selon l'invention permettra de mettre en oeuvre la modularité en assurant un montage simple et rapide de tout type de composant pyrotechnique. Les opérations pyrotechniques délicates seront concentrées au niveau de la brique constituée par l'inflammateur de base. Cet inflammateur pourra être fabriqué en grande quantité et à moindres coûts car il est commun à tous les autres composants du catalogue.The assembly method according to the invention will make it possible to implement the modularity by ensuring a simple and fast assembly of any type of pyrotechnic component. The delicate pyrotechnic operations will be concentrated at the level of the brick constituted by the base igniter. This igniter can be manufactured in large quantities and at a lower cost because it is common to all other components of the catalog.

Ainsi l'invention a pour objet un inflammateur comprenant une alvéole renfermant au moins une composition pyrotechnique et un moyen d'initiation de celle-ci par énergie électrique qui est raccordé à au moins deux broches conductrices sortant de l'alvéole, inflammateur caractérisé en ce que chaque broche comporte au moins une gorge qui est destinée à coopérer avec une douille déformable solidaire d'un connecteur électrique.Thus, the subject of the invention is an igniter comprising a cavity containing at least one pyrotechnic composition and a means for initiating it by electrical energy which is connected to at least two conductive pins coming out of the cell, an igniter characterized in that that each spindle has at least one groove which is intended to cooperate with a deformable sleeve integral with an electrical connector.

Avantageusement l'alvéole sera obturée par au moins un paillet en matériau plastique souple.Advantageously, the cell will be closed by at least one flap made of flexible plastic material.

Au moins une des broches pourra comporter un usinage qui sera disposé en regard d'un fond métallique de l'alvéole de façon à former une zone favorisant l'écoulement des décharges électrostatiques.At least one of the pins may comprise a machining which will be arranged facing a metal bottom of the cell so as to form a zone promoting the flow of electrostatic discharges.

La composition pyrotechnique pourra être choisie parmi les compositions suivantes : Zirconium / perchlorate de potassium, Zirconium - Bore / nitrate de potassium.The pyrotechnic composition may be chosen from the following compositions: Zirconium / potassium perchlorate, Zirconium - Boron / potassium nitrate.

La masse de cette composition pyrotechnique sera de préférence comprise entre 30 milligrammes et 50 milligrammes.The mass of this pyrotechnic composition will preferably be between 30 milligrams and 50 milligrams.

Cet inflammateur constitue la brique de base permettant de concevoir de façon modulaire différents composants pyrotechniques.This igniter is the basic brick for modular design of different pyrotechnic components.

L'invention a donc aussi pour objet un composant pyrotechnique comportant un tel inflammateur et qui est fixé à un connecteur électrique.The invention therefore also relates to a pyrotechnic component comprising such an igniter and which is attached to an electrical connector.

Selon un mode particulier de réalisation, l'inflammateur est logé dans un boîtier, le boîtier renfermant également au moins un étage de sortie pyrotechnique disposé au voisinage de l'inflammateur.According to a particular embodiment, the igniter is housed in a housing, the housing also containing at least one pyrotechnic output stage disposed in the vicinity of the igniter.

L'étage de sortie pourra être un relais allumeur comprenant un godet renfermant au moins une composition pyrotechnique.The output stage may be an igniter relay comprising a bucket containing at least one pyrotechnic composition.

L'étage de sortie pourra être un relais détonateur comprenant un godet renfermant au moins une composition explosive.The output stage may be a detonator relay comprising a bucket containing at least one explosive composition.

L'étage de sortie pourra être un générateur de gaz comprenant un godet renfermant au moins une poudre propulsive ou une poudre noire.The output stage may be a gas generator comprising a bucket containing at least one propellant powder or a black powder.

Le boîtier pourra être fermé à sa partie arrière par un bouchon vissé, de façon à réaliser un composant démontable.The housing may be closed at its rear by a screw cap, so as to achieve a removable component.

Le boîtier pourra être serti à sa partie arrière sur le connecteur, de façon à réaliser un composant indémontable.The housing can be crimped at its rear part on the connector, so as to make a component unmountable.

L'invention a enfin également pour objet un procédé de fabrication d'un composant pyrotechnique, procédé caractérisé par les étapes suivantes :

  • on réalise un inflammateur comprenant une alvéole renfermant au moins une composition pyrotechnique et un moyen d'initiation de celle-ci par énergie électrique qui est raccordé à au moins deux broches conductrices sortant de l'alvéole, chaque broche comportant au moins une gorge qui est destinée à coopérer avec une douille déformable solidaire d'un connecteur électrique,
  • on solidarise l'inflammateur avec un connecteur,
  • on place dans un boîtier au moins un étage de sortie pyrotechnique,
  • on loge l'inflammateur et le connecteur dans le boîtier, l'inflammateur étant positionné au voisinage de l'étage de sortie pyrotechnique,
  • on referme le boîtier.
The invention finally also relates to a method for manufacturing a pyrotechnic component, characterized in the following steps:
  • an igniter is made comprising a cell containing at least one pyrotechnic composition and means for initiating it by electrical energy which is connected to at least two conductive pins coming out of the cell, each pin comprising at least one groove which is intended to cooperate with a deformable socket integral with an electrical connector,
  • we attach the igniter with a connector,
  • at least one pyrotechnic output stage is placed in a housing,
  • the igniter and the connector are housed in the housing, the igniter being positioned in the vicinity of the pyrotechnic output stage,
  • we close the case.

L'invention sera mieux comprise à la lecture de la description qui va suivre de différents modes de réalisation, description faite en référence aux dessins annexés et dans lesquels :

  • la figure 1 est une vue en coupe longitudinale d'un inflammateur selon l'invention,
  • la figure 2 est une vue de détail agrandie d'une zone de l'inflammateur permettant de mieux canaliser, par effet de pointes, les décharges électrostatiques entre le corps et les broches,
  • la figure 3 est une vue de détail schématique de la coopération entre une broche et une douille d'un connecteur,
  • la figure 4 est une vue en coupe longitudinale partielle d'un inflammateur selon l'invention raccordé à un connecteur,
  • la figure 5 est une vue en coupe longitudinale partielle d'un premier exemple de réalisation d'un composant pyrotechnique selon l'invention,
  • la figure 6 est une vue en coupe longitudinale partielle d'un second exemple de réalisation d'un composant pyrotechnique selon l'invention,
  • la figure 7 montre un godet renfermant un autre type de composition.
The invention will be better understood on reading the following description of various embodiments, a description given with reference to the appended drawings and in which:
  • the figure 1 is a longitudinal sectional view of an igniter according to the invention,
  • the figure 2 is an enlarged detail view of an area of the igniter for better channeling, by spike effect, the electrostatic discharges between the body and the pins,
  • the figure 3 is a schematic detail view of the cooperation between a pin and a socket of a connector,
  • the figure 4 is a partial longitudinal sectional view of an igniter according to the invention connected to a connector,
  • the figure 5 is a partial longitudinal sectional view of a first embodiment of a pyrotechnic component according to the invention,
  • the figure 6 is a partial longitudinal sectional view of a second embodiment of a pyrotechnic component according to the invention,
  • the figure 7 shows a bucket containing another type of composition.

En se reportant à la figure 1, un inflammateur 1 selon l'invention comprend une alvéole 2 métallique qui renferme une composition pyrotechnique 3 et un moyen d'initiation 4 de celle-ci. Le moyen d'initiation 4 est un moyen connu mettant en oeuvre l'énergie électrique, par exemple un fil résistif qui sera chauffé par un courant électrique. D'autres moyens d'initiation électrique pourraient être envisagés, par exemple un pont semi-conducteur ou une couche conductrice (couche mince réalisée par dépôt métallique ou couche épaisse obtenue par dépôt sérigraphique).Referring to the figure 1 , an igniter 1 according to the invention comprises a metal cell 2 which contains a pyrotechnic composition 3 and an initiation means 4 thereof. The initiation means 4 is a known means using the electrical energy, for example a resistive wire which will be heated by an electric current. Other electrical initiation means could be envisaged, for example a semiconductor bridge or a conductive layer (thin layer made by metal deposition or thick layer obtained by screen-printing).

Le moyen d'initiation 4 est raccordé à au moins deux broches conductrices 5a et 5b qui sortent de l'alvéole 2 au travers d'une ouverture arrière 2a réalisée dans un fond 2b de l'alvéole 2.The initiating means 4 are connected to at least two conductive pins 5a and 5b which leave the cell 2 through a rear opening 2a made in a bottom 2b of the cell 2.

Les broches 5a et 5b sont noyées dans un plot isolant 6, réalisé en matière plastique en verre ou bien en céramique.The pins 5a and 5b are embedded in an insulating pad 6, made of plastic material made of glass or ceramic.

On a représenté à la figure 1 une rondelle arrière 7 et un paillet 9 de fermeture qui sont également réalisés en un matériau plastique isolant électrique, par exemple le polytétrafluoréthylène (plus connu sous la marque déposée Téflon). Cette rondelle et ce paillet ont pour fonction d'assurer l'herméticité de l'inflammateur.We have shown figure 1 a rear washer 7 and a closing flap 9 which are also made of an electrically insulating plastic material, for example polytetrafluoroethylene (better known under the trademark Teflon). This washer and this paillet have the function of ensuring the hermeticity of the igniter.

Une matière plastique (par exemple le polytétrafluoréthylène, ou le caoutchouc ou un dérivé de caoutchouc) est un matériau souple permettant le maintien en compression de la composition pyrotechnique 3 et assurant aussi l'herméticité de l'inflammateur 1. Ce matériau permet aussi d'éviter, lors du fonctionnement, les projections métalliques vers l'aval du composant ce qui est exigé dans certaines applications (piles thermiques par exemple). La rondelle 7 pourra être remplacée par une feuille portant un perçage pour chaque broche 5a,5b.A plastic material (for example polytetrafluoroethylene, or rubber or a rubber derivative) is a flexible material allowing the compression of the pyrotechnic composition 3 to be maintained in compression and also ensuring the hermeticity of the igniter 1. This material also makes it possible to avoid, during operation, the metal projections downstream of the component which is required in certain applications (thermal batteries for example). The washer 7 may be replaced by a sheet bearing a bore for each pin 5a, 5b.

Une jupe en matière plastique 8 coiffe le plot isolant 6 et permet de délimiter un volume cylindrique pouvant recevoir la composition pyrotechnique 3. L'alvéole 2 est sertie (zone annulaire S) sur le paillet 9.A plastic skirt 8 caps the insulating pad 6 and defines a cylindrical volume that can receive the pyrotechnic composition 3. The cell 2 is crimped (annular area S) on the flake 9.

On remarque sur la figure 1 que chaque broche 5a et 5b comporte une gorge 10 au voisinage de son extrémité libre.We notice on the figure 1 each pin 5a and 5b has a groove 10 near its free end.

La figure 3 montre la coopération d'une broche 5a ou 5b avec une douille métallique 11 qui comporte une partie avant formée par exemple de deux languettes souples 11.1 et 11.2. La douille 11 est incorporée dans un cylindre conducteur 12 qui est lui-même solidaire d'un connecteur 13 (non représenté en détails sur les figures).The figure 3 shows the cooperation of a pin 5a or 5b with a metal sleeve 11 which comprises a front portion formed for example of two flexible tongues 11.1 and 11.2. The sleeve 11 is incorporated in a conductive cylinder 12 which is itself secured to a connector 13 (not shown in detail in the figures).

Les extrémités libres des broches 5a et 5b comportent une pointe sphérique 14a,14b qui, lors de la mise en place de la broche dans la douille 11, pousse la partie avant déformable de celle-ci. Les languettes 11.1 et 11.2 de cette partie s'écartent et se logent par élasticité dans la gorge 10, interdisant toute extraction ultérieure de la broche 5a,5b.The free ends of the pins 5a and 5b comprise a spherical tip 14a, 14b which, during the establishment of the pin in the sleeve 11, pushes the deformable front portion thereof. Tabs 11.1 and 11.2 of this part deviate and are housed by elasticity in the groove 10, prohibiting further extraction of the pin 5a, 5b.

Une telle disposition permet de rendre l'inflammateur 1 complètement solidaire de son connecteur 13.Such an arrangement makes it possible to make the igniter 1 completely integral with its connector 13.

On remarque sur la figure 1 que les broches 5a et 5b ont une longueur sortant de l'alvéole 2 qui est réduite par rapport à celle qui est habituelle dans les composants classiques.We notice on the figure 1 that the pins 5a and 5b have a length exiting the cell 2 which is reduced compared to that which is usual in the conventional components.

Une telle disposition favorise la compacité de l'inflammateur 1 qui a par ailleurs les dimensions les plus réduites possibles. La présence des gorges 10 sur les broches 5a,5b permet la solidarisation fiable et définitive de l'inflammateur sur un connecteur 13, qui facilite l'intégration ultérieure du composant.Such an arrangement promotes the compactness of the igniter 1 which also has the smallest possible dimensions. The presence of the grooves 10 on the pins 5a, 5b allows the reliable and definitive connection of the igniter to a connector 13, which facilitates the subsequent integration of the component.

La composition pyrotechnique 3 est une composition d'initiation de type oxydo réductrice. On pourra par exemple mettre en oeuvre une composition classique de type Zirconium (60% en masse) / perchlorate de potassium (40% en masse), ou bien (pourcentages en masse totale de la composition) Zirconium (60%) /Bore (12%) / nitrate de potassium (28%) ou tout autre type de composition en privilégiant l'utilisation de compositions pyrotechniques ne contenant pas de matériaux cancérigènes, mutagènes ou nuisibles à la reproduction (matériaux dits CMR).The pyrotechnic composition 3 is a redox type initiation composition. For example, it is possible to use a conventional composition of the Zirconium (60% by weight) / potassium perchlorate (40% by weight) type or (percentages by total mass of the composition). Zirconium (60%) / Boron (12%) %) / potassium nitrate (28%) or any other type of composition by favoring the use of pyrotechnic compositions not containing carcinogenic, mutagenic or reproductive harm materials (so-called CMR materials).

La masse de la composition pyrotechnique 3 mise en oeuvre sera comprise entre 30 milligrammes et 50 milligrammes.The mass of the pyrotechnic composition 3 used will be between 30 milligrams and 50 milligrams.

L'inflammateur 1 est ainsi un composant pyrotechnique de dimensions très réduites et incorporant la quantité minimale de composition pyrotechnique susceptible d'engendrer un effet utilisable.The igniter 1 is thus a pyrotechnic component of very small dimensions and incorporating the minimum amount of pyrotechnic composition capable of generating a usable effect.

Concrètement avec une telle masse de composition on pourra réaliser un inflammateur de diamètre inférieur à 6 mm et de longueur inférieure à 12 mm, broches incluses.Concretely with such a mass of composition it will be possible to realize an igniter of diameter less than 6 mm and length less than 12 mm, pins included.

Le but est de réaliser un inflammateur de taille analogue à celle des "perles" d'allumage pyrotechniques utilisées dans le domaine des mines et carrières, mais présentant cependant toutes les caractéristiques de sécurité d'un composant militaire.The goal is to achieve a size igniter similar to the pyrotechnic "beading" used in the field of mines and quarries, but having all the security features of a military component.

Les perles d'allumage pyrotechniques comprennent généralement une composition pyrotechnique oxydo-réductrice qui est déposée par trempage sur un filament conducteur.The pyrotechnic ignition beads generally comprise an oxido-reducing pyrotechnic composition which is deposited by dipping on a conductive filament.

Elles présentent comme inconvénient d'être très sensibles et fragiles car elles ne sont pas encapsulées. Leur intégration pour d'autres applications que les mines et carrières est délicate car la sécurité du composant est insuffisante.They have the disadvantage of being very sensitive and fragile because they are not encapsulated. Their integration for other applications than mines and quarries is difficult because the component's security is insufficient.

L'inflammateur selon l'invention met en oeuvre une composition pyrotechnique qui se trouve protégée par l'alvéole métallique 2, le paillet 9 et la rondelle 7, contre les chocs et l'humidité. Il incorpore aussi des moyens assurant sa protection contre les décharges électrostatiques et les rayonnements électromagnétiques. Le niveau d'initiation de cet inflammateur est calibré par la définition du moyen d'initiation 4.The igniter according to the invention uses a pyrotechnic composition which is protected by the metal cell 2, the straw 9 and the washer 7, against shocks and humidity. It also incorporates means ensuring its protection against electrostatic discharges and electromagnetic radiation. The initiation level of this igniter is calibrated by the definition of the initiation means 4.

Il est possible de réaliser un inflammateur de taille réduite qui satisfasse les contraintes réglementaires les plus sévères, et en particulier le niveau de sécurité 1 Ampère / 1 Watt prévu par la norme militaire MIL DTL 23659.It is possible to realize a small size igniter that meets the most stringent regulatory constraints, and in particular the level of safety 1 Ampere / 1 Watt provided by military standard MIL DTL 23659.

On remarque sur la figure 1 que la broche 5b comporte aussi une deuxième gorge 14 qui est disposée en regard du fond 2b de l'alvéole 2. Ce détail est plus particulièrement visible sur la figure 2. Les profils aigus des bords de la gorge 14 sont proches du rebord de l'ouverture 2a. On forme ainsi une zone 15 qui permet de mieux canaliser les décharges électrostatiques par effet de pointes. Une telle disposition constitue un moyen améliorant la résistance de l'inflammateur 1 aux environnements électrostatiques sévères.We notice on the figure 1 that the pin 5b also has a second groove 14 which is arranged facing the bottom 2b of the cell 2. This detail is more particularly visible on the figure 2 . The acute profiles of the edges of the groove 14 are close to the rim of the opening 2a. An area 15 is thus formed which makes it possible to better channel the discharges electrostatic spike effect. Such an arrangement is a means of improving the resistance of the igniter 1 to severe electrostatic environments.

En alternative à la gorge 14 on pourra pratiquer sur la broche 5b d'autres usinages favorisant les décharges électrostatiques vers l'alvéole 2 : collerette, indentations, moletage...As an alternative to the groove 14, it will be possible to use on the spindle 5b other machining operations promoting electrostatic discharge towards the cell 2: collar, indentations, knurling, etc.

La décharge électrostatique éventuelle se produit au niveau de la zone 15, ce qui empêche le claquage au travers de la composition pyrotechnique 3 et empêche un déclenchement intempestif de l'inflammateur 1.Any electrostatic discharge occurs at the zone 15, which prevents breakdown through the pyrotechnic composition 3 and prevents inadvertent tripping of the igniter 1.

L'assemblage de l'inflammateur 1 s'effectue de la façon suivante :

  • On fixe un moyen d'initiation 4 sur le plot 6 et entre les broches 5a,5b.
  • On place un plot 6 portant les broches 5a,5b dans une alvéole 2, avec interposition de la rondelle arrière 7.
  • On positionne la jupe 8 sur le plot 6, ce qui définit une cavité pour la composition pyrotechnique 3.
  • On dose et on comprime dans cette cavité la composition pyrotechnique 3.
  • On positionne le paillet 9 puis on sertit l'alvéole 2.
The assembly of the igniter 1 is carried out as follows:
  • An initiation means 4 is fixed on the stud 6 and between the pins 5a, 5b.
  • Place a stud 6 carrying the pins 5a, 5b in a cell 2, with the interposition of the rear washer 7.
  • The skirt 8 is positioned on the stud 6, which defines a cavity for the pyrotechnic composition 3.
  • The pyrotechnic composition 3 is dosed and compressed in this cavity.
  • The flap 9 is positioned and then the cell 2 is crimped.

Ce montage est automatisable, ce qui autorise la production de grandes quantités d'inflammateurs à un coût modéré.This assembly is automatable, which allows the production of large quantities of igniters at a moderate cost.

L'inflammateur 1 selon l'invention est la brique de base qui permet la fabrication simplifiée et modulaire de nombreux types de composants pyrotechniques.The igniter 1 according to the invention is the basic brick which allows the simplified and modular manufacture of many types of pyrotechnic components.

La figure 4 montre un inflammateur 1 fixé de façon définitive à un connecteur 13 relié à des fils souples 16a,16b. Le connecteur 13 peut intégrer de multiples variantes de fils ( longueur, nature, couleur ...). Un tel assemblage constitue déjà un composant pyrotechnique de base, sécurisé et de taille réduite, qui est susceptible d'être employé dans diverses applications (piles thermiques, équipements de missiles...) .The figure 4 shows an igniter 1 permanently attached to a connector 13 connected to flexible son 16a, 16b. The connector 13 can integrate multiple son variants (length, nature, color ...). Such an assembly already constitutes a basic, secure and small pyrotechnic component, which is likely to be used in various applications (thermal batteries, missile equipment ...).

La figure 5 montre un autre mode de réalisation d'un composant pyrotechnique 17 selon l'invention.The figure 5 shows another embodiment of a pyrotechnic component 17 according to the invention.

Suivant ce mode, l'inflammateur 1 fixé au connecteur électrique 13 est logé dans un boîtier cylindrique 18, métallique ou en matière plastique.In this mode, the igniter 1 attached to the electrical connector 13 is housed in a cylindrical housing 18, metal or plastic.

Le boîtier 18 renferme également au moins un étage de sortie pyrotechnique 19 qui est disposé au voisinage de l'inflammateur 1. La distance entre l'inflammateur 1 et l'étage de sortie 19 est réglée à l'aide d'une rondelle entretoise 20.The housing 18 also contains at least one pyrotechnic output stage 19 which is arranged in the vicinity of the igniter 1. The distance between the igniter 1 and the output stage 19 is adjusted by means of a spacer washer 20 .

On définira l'étage de sortie 19 en fonction de l'effet souhaité et cet étage sera exempt de matériaux CMR.The output stage 19 will be defined according to the desired effect and this stage will be free of CMR materials.

L'étage de sortie 19 pourra par exemple être un relais détonateur comprenant un godet 21 renfermant un explosif primaire et (éventuellement) un explosif secondaire d'amorçage.The output stage 19 may for example be a detonator relay comprising a bucket 21 containing a primary explosive and (optionally) a secondary explosive boot.

Comme représenté sur la figure 5, le godet 21 renferme une couche d'explosif primaire 22 (par exemple de l'azoture d'argent) et une couche d'explosif secondaire d'amorçage 23 (par exemple de l'hexogène). Le composant pyrotechnique ainsi constitué est un détonateur électrique.As shown on the figure 5 , the bucket 21 contains a layer of primary explosive 22 (for example silver azide) and a secondary explosive priming layer 23 (for example hexogen). The pyrotechnic component thus formed is an electric detonator.

Le relais de détonation 19 comprend une couche d'explosif primaire 22 qui, excité par la flamme de l'inflammateur, prend le régime de détonation et initie l'explosif secondaire 23. La quantité d'explosif primaire est d'environ 100 milligrammes, la quantité d'explosif secondaire d'amorçage dépend de la puissance souhaitée (classiquement de 100 milligrammes à 1 gramme).The detonation relay 19 comprises a primary explosive layer 22 which, excited by the flame of the igniter, takes the detonation regime and initiates the secondary explosive 23. The amount of primary explosive is about 100 milligrams, the amount of secondary explosive priming depends on the desired power (typically from 100 milligrams to 1 gram).

Le godet 21 est fermé à chaque extrémité par un paillet 24, 25 (l'étanchéité pourra être complétée par un vernissage des faces du godet portant les paillets 24,25). Il serait possible de prévoir un godet 21 dans lequel le paillet 24 serait omis et remplacé par un godet à fond plein. L'énergie du choc de l'explosif suffira en effet à pulvériser le godet 21. Le choix entre fond plein ou paillet dépend de l'effet souhaité : fragmentation avec le fond plein ou projection de plaque avec le paillet.The bucket 21 is closed at each end by a straw 24, 25 (the seal may be completed by a varnishing of the faces of the bucket carrying the straws 24,25). It would be possible to provide a bucket 21 in which the straw 24 would be omitted and replaced by a full-bottomed bucket. The energy of the shock of the explosive will indeed be sufficient to spray the bucket 21. The choice between solid bottom or straw depends on the desired effect: fragmentation with the solid bottom or projection of plate with the straw.

On remarque que, grâce à l'invention, il est aisé de définir différents types de détonateurs en ne modifiant que la nature et la composition de l'étage de sortie 19.Note that, thanks to the invention, it is easy to define different types of detonators by modifying only the nature and composition of the output stage 19.

Par ailleurs, les caractéristiques de sécurité d'emploi étant assurées par l'inflammateur 1, tous ces détonateurs auront le même niveau de sécurité sans qu'il soit nécessaire de reprendre la définition complète du composant 17.Moreover, since the safety characteristics of use are ensured by the igniter 1, all these detonators will have the same level of security without it being necessary to take over the complete definition of the component 17.

Le boîtier 18 est serti (sertissage 26) à sa partie arrière sur le connecteur 13 qui porte une gorge 13a à cet effet.The housing 18 is crimped (crimping 26) at its rear portion on the connector 13 which carries a groove 13a for this purpose.

L'ensemble constituera un détonateur indémontable.The set will be an indémontable detonator.

La figure 6 montre un autre mode de réalisation d'un composant pyrotechnique qui ne diffère du précédent que par son caractère démontable.The figure 6 shows another embodiment of a pyrotechnic component which differs from the previous one only in its dismountable nature.

A cet effet le boîtier 18 comporte une partie filetée 18a sur laquelle se fixe un bouchon vissé 27. Le bouchon 27 vient former une butée contre l'arrière du connecteur 13. Un tel mode de réalisation est particulièrement intéressant en phase de développement pour répondre rapidement à un besoin.For this purpose the housing 18 comprises a threaded portion 18a on which is fixed a screw cap 27. The stopper 27 comes to form a stop against the rear of the connector 13. Such an embodiment is particularly interesting in the development phase to respond quickly to a need.

On pourra éventuellement prévoir un joint d'étanchéité torique 29, entre le boîtier 18 et le connecteur 13, logé dans la gorge 13a.It may be possible to provide an O-ring seal 29, between the housing 18 and the connector 13, housed in the groove 13a.

Grâce à l'invention il est aussi possible avec le même inflammateur 1 et le même connecteur 13 de réaliser un composant pyrotechnique de type allumeur. Il suffit pour cela de mettre en oeuvre un étage de sortie 19 de nature différente, dans lequel le godet 21 renferme au moins une composition pyrotechnique.Thanks to the invention it is also possible with the same igniter 1 and the same connector 13 to produce an igniter type pyrotechnic component. It suffices for this to implement an output stage 19 of different nature, wherein the bucket 21 contains at least one pyrotechnic composition.

La figure 7 montre un tel étage de sortie 19 seul dont le godet 21 renferme une seule couche 28 d'une composition pyrotechnique par exemple de type Bore Nitrate. Ce godet se positionne bien entendu en lieu et place du godet 19 des figures 5 ou 6.The figure 7 shows such an outlet stage 19 only, the bucket 21 contains a single layer 28 of a pyrotechnic composition, for example Bore nitrate type. This bucket is of course positioned in place of the bucket 19 of Figures 5 or 6 .

Si l'effet pyrotechnique recherché est la génération de gaz, on pourra mettre en oeuvre un étage de sortie dans lequel le godet 19 renfermera au moins une poudre propulsive, par exemple une poudre simple base ou une poudre double base ou plus simplement une poudre noire.If the desired pyrotechnic effect is the generation of gas, it will be possible to implement an outlet stage in which the bucket 19 will contain at least one propellant powder, for example a single base powder or a double base powder or, more simply, a black powder. .

L'invention permet donc de faciliter la définition et la fourniture à moindre coût de toute une gamme de composants pyrotechniques qui utilisent tous le même inflammateur 1 équipé d'un connecteur 13.The invention thus makes it easier to define and supply at lower cost a whole range of pyrotechnic components that all use the same igniter 1 equipped with a connector 13.

Pour fabriquer un composant pyrotechnique selon l'invention il suffit donc de :

  • Réaliser un inflammateur 1 comprenant une alvéole 2 renfermant une composition pyrotechnique 3 et un moyen d'initiation 4. Cet inflammateur comprendra deux broches conductrices sortant de l'alvéole et comportant chacune au moins une gorge destinée à coopérer avec une douille déformable solidaire d'un connecteur électrique 13.
To manufacture a pyrotechnic component according to the invention it is therefore sufficient to:
  • Realizing an igniter 1 comprising a cell 2 containing a pyrotechnic composition 3 and an initiation means 4. This igniter will comprise two conductive pins coming out of the cell and each having at least one groove intended to cooperate with a deformable sleeve integral with a electrical connector 13.

On solidarise ensuite l'inflammateur 1 avec un connecteur 13.The igniter 1 is then secured to a connector 13.

On réalise par ailleurs un boîtier 18 (en métal ou matière plastique selon l'emploi souhaité).In addition, a housing 18 (made of metal or plastic material according to the desired use) is produced.

On place dans ce boîtier 18 au moins un étage de sortie pyrotechnique 19 qui aura été fabriqué par ailleurs et défini en fonction de la nature du composant pyrotechnique 17 que l'on cherche à réaliser.In this housing 18 is placed at least one pyrotechnic output stage 19 which will have been manufactured elsewhere and defined according to the nature of the pyrotechnic component 17 that is to be achieved.

On loge l'inflammateur 1 et le connecteur 13 dans le boîtier 18, l'inflammateur 1 étant positionné au voisinage de l'étage de sortie pyrotechnique 19.The igniter 1 and the connector 13 are housed in the housing 18, the igniter 1 being positioned in the vicinity of the pyrotechnic output stage 19.

On referme enfin le boîtier (de façon indémontable ou démontable suivant la nature du boîtier mis en oeuvre.Finally, the case is closed again (releasably or removably depending on the nature of the housing used.

Claims (13)

Inflammateur (1) comprenant une alvéole (2) renfermant au moins une composition pyrotechnique (3) et un moyen (4) d'initiation de celle-ci par énergie électrique qui est raccordé à au moins deux broches conductrices (5a,5b) sortant de l'alvéole (2), inflammateur caractérisé en ce que chaque broche (5a,5b) comporte au moins une gorge (10) qui est destinée à coopérer avec une douille déformable solidaire d'un connecteur électrique.Inflammator (1) comprising a cell (2) containing at least one pyrotechnic composition (3) and means (4) for initiating it by electrical energy which is connected to at least two conductive pins (5a, 5b) coming out of the cell (2), igniter characterized in that each pin (5a, 5b) comprises at least one groove (10) which is intended to cooperate with a deformable sleeve integral with an electrical connector. Inflammateur selon la revendication 1, caractérisé en ce que l'alvéole (2) est obturée par au moins un paillet (9) en matériau plastique souple.Inflammator according to claim 1, characterized in that the cell (2) is closed by at least one flap (9) of flexible plastic material. Inflammateur selon une des revendications 1 ou 2, caractérisée en ce qu'au moins une broche (5a,5b) comporte un usinage (14) qui est disposé en regard d'un fond métallique (2b) de l'alvéole (2) de façon à former une zone (15) favorisant l'écoulement des décharges électrostatiques.Inflammator according to one of claims 1 or 2, characterized in that at least one pin (5a, 5b) comprises a machining (14) which is arranged facing a metal base (2b) of the cell (2) of to form a zone (15) promoting the flow of electrostatic discharges. Inflammateur selon une des revendications 1 à 3, caractérisé en ce que la composition pyrotechnique (3) est choisie parmi les compositions suivantes : Zirconium / perchlorate de potassium, Zirconium - Bore / nitrate de potassium.Inflammator according to one of claims 1 to 3, characterized in that the pyrotechnic composition (3) is selected from the following compositions: Zirconium / potassium perchlorate, Zirconium - Boron / potassium nitrate. Inflammateur selon la revendication 4, caractérisé en ce que la masse de la composition pyrotechnique est comprise entre 30 milligrammes et 50 milligrammes.An igniter according to claim 4, characterized in that the mass of the pyrotechnic composition is between 30 milligrams and 50 milligrams. Composant pyrotechnique caractérisé en ce qu'il comporte un inflammateur (1) selon une des revendications 1 à 5, inflammateur qui est fixé à un connecteur électrique (13).Pyrotechnic component characterized in that it comprises an igniter (1) according to one of claims 1 to 5, igniter which is attached to an electrical connector (13). Composant pyrotechnique selon la revendication 6, caractérisé en ce que l'inflammateur (1) est logé dans un boîtier (18), le boîtier renfermant également au moins un étage (19) de sortie pyrotechnique disposé au voisinage de l'inflammateur (1).Pyrotechnic component according to Claim 6, characterized in that the igniter (1) is housed in a housing (18), the housing also enclosing at least one pyrotechnic output stage (19) disposed in the vicinity of the igniter (1). Composant pyrotechnique selon la revendication 7, caractérisé en ce que l'étage de sortie (19) est un relais allumeur comprenant un godet (21) renfermant au moins une composition pyrotechnique.Pyrotechnic component according to claim 7, characterized in that the output stage (19) is an igniter relay comprising a bucket (21) containing at least one pyrotechnic composition. Composant pyrotechnique selon la revendication 7, caractérisé en ce que l'étage de sortie (19) est un relais détonateur comprenant un godet (21) renfermant au moins une composition explosive.Pyrotechnic component according to claim 7, characterized in that the output stage (19) is a detonator relay comprising a bucket (21) containing at least one explosive composition. Composant pyrotechnique selon la revendication 7, caractérisé en ce que l'étage de sortie (19) est un générateur de gaz comprenant un godet (21) renfermant au moins une poudre propulsive ou une poudre noire.Pyrotechnic component according to claim 7, characterized in that the output stage (19) is a gas generator comprising a cup (21) containing at least one propellant powder or a black powder. Composant pyrotechnique selon une des revendications 7 à 10, caractérisé en ce que le boîtier (18) est fermé à sa partie arrière par un bouchon vissé (27).Pyrotechnic component according to one of claims 7 to 10, characterized in that the housing (18) is closed at its rear by a screw cap (27). Composant pyrotechnique selon une des revendications 7 à 10, caractérisé en ce que le boîtier (18) est serti à sa partie arrière sur le connecteur (13).Pyrotechnic component according to one of claims 7 to 10, characterized in that the housing (18) is crimped at its rear part on the connector (13). Procédé de fabrication d'un composant pyrotechnique (17), caractérisé par les étapes suivantes : - on réalise un inflammateur (1) comprenant une alvéole (2) renfermant au moins une composition pyrotechnique (3) et un moyen (4) d'initiation de celle-ci par énergie électrique qui est raccordé à au moins deux broches conductrices (5a,5b) sortant de l'alvéole (2), chaque broche comportant au moins une gorge (10) qui est destinée à coopérer avec une douille déformable solidaire d'un connecteur électrique (13), - on solidarise l'inflammateur (1) avec un connecteur (13), - on place dans un boîtier (18) au moins un étage de sortie pyrotechnique (19), - on loge l'inflammateur (1) et le connecteur (13) dans le boîtier (18), l'inflammateur (1) étant positionné au voisinage de l'étage de sortie pyrotechnique (19), - on referme le boîtier (18). A method of manufacturing a pyrotechnic component (17), characterized by the steps of: an igniter (1) is made comprising a cell (2) containing at least one pyrotechnic composition (3) and means (4) for initiating it by electrical energy which is connected to at least two conductive pins (5a). , 5b) emerging from the cell (2), each pin comprising at least one groove (10) which is intended to cooperate with a deformable bushing integral with an electrical connector (13), - the igniter (1) is secured with a connector (13), at least one pyrotechnic output stage (19) is placed in a housing (18), the igniter (1) and the connector (13) are housed in the housing (18), the igniter (1) being positioned in the vicinity of the pyrotechnic output stage (19), - Closes the housing (18).
EP20120156391 2011-04-04 2012-02-21 Squib, pyrotechnical component and method for manufacturing such a pyrotechnical component Active EP2508838B1 (en)

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FR1101024A FR2973498B1 (en) 2011-04-04 2011-04-04 INFLAMMATOR, PYROTECHNIC COMPONENT AND METHOD FOR PRODUCING SUCH PYROTECHNIC COMPONENT

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EP2508838B1 EP2508838B1 (en) 2014-05-14

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105377009A (en) * 2015-12-10 2016-03-02 重庆凯西驿电子科技有限公司 Protective device for protecting pins of electrolytic capacitor
US9970737B2 (en) 2013-05-07 2018-05-15 Commissariat A L'energie Atomique Et Aux Energies Alternatives Optopyrotechnic initiator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB913510A (en) * 1960-08-11 1962-12-19 Paul Rudolph Neidecker Improvements in plug and socket connectors for electric cables
US3303737A (en) * 1963-04-11 1967-02-14 Physical Instr Corp Method of fabricating a detonation squib
US4271453A (en) * 1978-07-01 1981-06-02 Nissan Motor Company, Limited Igniter with coupling structure
EP1441193A1 (en) * 2003-01-21 2004-07-28 Takata Corporation Initiator and gas generator
EP1995551A1 (en) 2007-05-23 2008-11-26 Saab Ab Igniter/Initiator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB913510A (en) * 1960-08-11 1962-12-19 Paul Rudolph Neidecker Improvements in plug and socket connectors for electric cables
US3303737A (en) * 1963-04-11 1967-02-14 Physical Instr Corp Method of fabricating a detonation squib
US4271453A (en) * 1978-07-01 1981-06-02 Nissan Motor Company, Limited Igniter with coupling structure
EP1441193A1 (en) * 2003-01-21 2004-07-28 Takata Corporation Initiator and gas generator
EP1995551A1 (en) 2007-05-23 2008-11-26 Saab Ab Igniter/Initiator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9970737B2 (en) 2013-05-07 2018-05-15 Commissariat A L'energie Atomique Et Aux Energies Alternatives Optopyrotechnic initiator
CN105377009A (en) * 2015-12-10 2016-03-02 重庆凯西驿电子科技有限公司 Protective device for protecting pins of electrolytic capacitor

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FR2973498A1 (en) 2012-10-05
FR2973498B1 (en) 2013-04-05
EP2508838B1 (en) 2014-05-14

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