EP0030498A1 - Self separating pyrotechnic connector having sealed parts - Google Patents

Self separating pyrotechnic connector having sealed parts Download PDF

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Publication number
EP0030498A1
EP0030498A1 EP19800401716 EP80401716A EP0030498A1 EP 0030498 A1 EP0030498 A1 EP 0030498A1 EP 19800401716 EP19800401716 EP 19800401716 EP 80401716 A EP80401716 A EP 80401716A EP 0030498 A1 EP0030498 A1 EP 0030498A1
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EP
European Patent Office
Prior art keywords
relay
pyrotechnic
donor
receiver
seal
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
EP19800401716
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German (de)
French (fr)
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EP0030498B1 (en
Inventor
Paul Hubert Boeglin
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Airbus Group SAS
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Airbus Group SAS
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Publication date
Application filed by Airbus Group SAS filed Critical Airbus Group SAS
Publication of EP0030498A1 publication Critical patent/EP0030498A1/en
Application granted granted Critical
Publication of EP0030498B1 publication Critical patent/EP0030498B1/en
Expired legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/04—Arrangements for ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/04—Arrangements for ignition
    • F42D1/043—Connectors for detonating cords and ignition tubes, e.g. Nonel tubes

Definitions

  • the subject of the present invention is a pyrotechnic connection with leak-proof and self-releasable parts, the ignition of which is effected by shock between two pyrotechnic relays mounted facing one another, loaded with explosive substances and the envelopes of which remain sealed before, during and after. operation.
  • This connection is integrated between two pyrotechnic transmission chains, sheathed, waterproof, each consisting of a strand of detonating transmission cord provided with a reinforcing relay at its ends.
  • the present invention specifically relates to a pyrotechnic connection with leaktight and self-releasable parts for the transmission of a pyrotechnic signal from a first to a second pyrotechnic chain, which overcomes these drawbacks. It comprises two waterproof pyrotechnic relays mounted facing one another on the same axis and capable of being separated while retaining their tightness, said relays being arranged so that the first relay delivers a detonation signal as it travels in the form of shock through the funds of said relays and initiate the explosive charge of the second relay.
  • the connector according to the invention allows the uncoupling of two constituent parts and it eliminates during operation the possible deterioration of adjacent equipment, just as it avoids pollution of the ambient environment.
  • Such a connector can be used in the field of connection or separation structures such as two stages of ballistic missiles, satellites or their launchers. It eliminates the deterioration of adjacent equipment such as electrical equipment located near the connection and liable to be damaged, since the transmission of the detonation signal between the two relays in contact and charged with explosives is carried out without perforation of neither of the two relay funds, therefore without rejection of heat and powder, making possible their separation without nuisance after passing the signal.
  • said first pyrotechnic chain engages inside a first sleeve
  • the second chain engages inside a second sleeve
  • the first and second chains being held respectively in the first and second sleeves, by a first and a second nut screwed into the latter.
  • the general reference 2 designates the pyrotechnic connector according to the invention.
  • the connector 2 allows the transmission of a pyrotechnic signal in the direction of arrow A, from a first pyrotechnic chain 4 to a second pyrotechnic chain 6.
  • the pyrotechnic chain 4 constituted by a strand of detonating cord surrounded by a sheath 5, is terminated by a first reinforcing relay 8, crimped at its end and engaging in a first pyrotechnic relay 10, called the donor relay.
  • the second pyrotechnic chain 6 constituted by a strand of detonating cord surrounded by a sheath 7 is, in the same way, terminated by a second reinforcing relay 12 crimped at its end and engaging in a second pyrotechnic relay 14, called receiving relay .
  • the donor relay 10 and the receiver relay 14 are engaged opposite one another along the same axis inside an internal positioning part 16. This part 16 is pierced with a series of bores of different diameters.
  • the narrower central bore 18 receives the donor relay 10.
  • In a second bore 20 of the central positioning piece 16 is engaged the shoulder portion 22 of the receiver relay 14.
  • the bottoms 24 and 26 of these two relays are located at contact.
  • the first sleeve 28 is screwed onto said internal positioning part 16 which is itself secured to the structure 29.
  • the structures 29 and 31 are capable of being separated from one other. These are for example two stages of ballistic missiles, satellites or launchers.
  • a first nut 32 holds the end of the first pyrotechnic chain inside the first sleeve 28.
  • a second nut 34 holds the end of the second pyrotechnic chain inside the second sleeve 30.
  • Two nuts 49 and 50 secure the assembly of the fitting to the structural frames 29 and 31.
  • the pyrotechnic connector comprises clamping means for pressing the bottoms 24 and 26 of the donor relay 10 and of the receiver relay 14 against each other.
  • clamping means consist of a helical spring 36 housed at the inside the bore 37 of said internal positioning part 16, and compressed between the donor relay 10 and the first sleeve 28.
  • the pyrotechnic connector 2 comprises means for sealing between each of said donor 10 and receiver 14 relays, and said positioning piece central 16.
  • These means consist of different O-rings: an O-ring 38 placed between the donor relay 10 in the bore 18, and on the other hand, a centering O-ring 40 placed in the receiver relay 14 of the bore 20.
  • the pyrotechnic connector 2 also includes means for ensuring a seal between the donor relay 10 and outside the pyrotechnic connection. These means consist of various seals: an O-ring 42 placed in a groove of the first reinforcing relay 8, a seal 44 placed between the internal positioning part 16 and said first sleeve 28.
  • the means to ensure a seal between the receiver relay 14 and the outside of the pyrotechnic connector 2 are constituted by an O-ring 46 placed in a groove of the reinforcing relay 12 and by a seal 48 placed between the receiver relay 14 and said second sleeve 30.
  • relay 2 The operation of relay 2 is as follows.
  • a detonator (not shown) initiates the transmission chain 4 to detonate the explosive of the donor relay 10.
  • the detonation signal delivered by this donor relay is sufficiently energetic to transit in the form of a shock wave through the watertight partitions 24 and 26 formed by the relay funds, and initiate the explosive of the receiver relay 14, in order to transmit the pyrotechnic signal to the transmission chain 6.
  • the two donor and recipient relays can be separated without harming the environment.
  • the first pyrotechnic relay receives the pyrotechnic signal from the first transmission chain 4 constituted by a strand of detonating cord surrounded by a sheath 5 and terminated by a reinforcing relay 8 crimped at its end.
  • the second pyrotechnic relay known as a "receiver" relay 14 ', initiated by relay 10 re transmits the pyrotechnic signal to a second transmission chain 6 constituted by a strand of detonating cord surrounded by a sheath 7 and terminated by a reinforcing relay 12 crimped at its end.
  • the donor relay 10 and the receiver relay 14 ' are engaged facing each other, on the same axis, in a positioning part 16' whose end 16'a shaped as a truncated cone receives the end 14 ′ also has a truncated cone shape of the relay 14 ′, the bottoms 24 and 26 of these two relays being in contact.
  • the first pyrotechnic chain 4 engages inside a sleeve 28 'whose internal end comes to bear on the donor relay 10, said chain being screwed into said sleeve 28' by means of a nut 32.
  • This sleeve 28 ' is itself screwed into the part 16' made integral with a frame 29 of the structure.
  • the second pyrotechnic chain 6 engages inside a sleeve 30 whose internal end 30a is screwed onto the rear part 14'b of the relay 14 '.
  • the sleeve 30 is made integral with a structural frame 31 while the second chain 6 is screwed into the sleeve 30 by means of a nut 34.
  • Two nuts 49 and 50 ensure the fixing of the entire fitting to the frames of structure 29 and 31.
  • the clamping means intended to press the bottoms 24 and 26 of the donor relay 10 and of the receiver relay 14 1 against each other are constituted by the internal positioning part 16 'screwed onto the sleeve 28' and by a counter nut 51 resting internally on a flange 28'a of the sleeve 28 ', and screwed onto the external part 16'b of the part 16.
  • Such a system of screws and counter locking nut provides better resistance to vibrations of the entire fitting.
  • the sealing of the "donor" part of the fitting is ensured by a seal 52 located between the relay 10 and the sleeve 28 'while the sealing of the "recipient” part is ensured by a seal, in this case a seal. glue between the relay 14 'and the sleeve 30.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

1. Self-separating pyrotechnic connector having sealed parts for transmitting a pyrotechnic signal from a first to a second pyrotechnic chain, comprising a first, donor, relay (10) and a second, receiver, relay (14), and means for holding the bases of the donor relay (10) and the receiver relay (14) in contact with one another, characterized in that the donor relay (10) has a sealed base (24) primed with a first reinforcing relay (8) located at the end of the first pyrotechnic chain (4), the assembly being fixed to a first separable structure member (29), the receiver relay (14) comprising a sealed base (26) which primes a second reinforcing relay (12) located at the end of the second pyrotechnic chain (6), the assembly being fixed to a second separable structure member (31), and the donor (10) and receiver (14) relays being engaged face-to-face in a bore of an internal positioning member (16), the bases (24 and 26) of said relays being in contact, the connector comprising means to ensure sealing between said donor (10) and receiver (14) relays and said internal positioning member (16), and means to ensure sealing between each of said donor (10) and receiver (14) relays and the exterior of the pyrotechnic connector.

Description

La présente invention a pour objet un raccord pyrotechnique à parties étanches et autolargables dont l'amorçage s'effectue par choc entre deux relais pyrotechniques montés en regard sur un même axe, chargés en substances explosives et dont les enveloppes restent étanches avant, pendant et après fonctionnement.The subject of the present invention is a pyrotechnic connection with leak-proof and self-releasable parts, the ignition of which is effected by shock between two pyrotechnic relays mounted facing one another, loaded with explosive substances and the envelopes of which remain sealed before, during and after. operation.

Ce raccord s'intègre entre deux chaînes de transmission pyrotechniques, gainées, étanches, constituées chacune par un brin de cordeau détonant de transmission muni d'un relais renforçateur à ses extrémités.This connection is integrated between two pyrotechnic transmission chains, sheathed, waterproof, each consisting of a strand of detonating transmission cord provided with a reinforcing relay at its ends.

On connaît, par le brevet français n° 1 470 813 déposé le 7 mars 1966, au nom de la Société TELEDYNE, un dispositif détonant agissant à travers une paroi pleine sans la perforer afin d'appliquer de l'extérieur une onde de choc à haute vitesse engendrée par une explosion, pour déclencher une déflagration ou une détonation sur la face interne d'un écran.French patent No. 1,470,813, filed on March 7, 1966, in the name of the TELEDYNE Company, is known to have a detonating device acting through a solid wall without puncturing it in order to apply a shock wave high speed generated by an explosion, to trigger a deflagration or a detonation on the internal face of a screen.

Le brevet français 71 10502 déposé le 25 mars 1971, au nom de l'Etat Français, pour "Dispositif de transmission pyrotechnique", décrit un dispositif pyrotechnique de transmission linéaire d'un signal constitué par un cordeau aboutissant à un relais d'amorçage d'une charge creuse à effet dirigé vers une charge aval précédée d'un relais d'amorçage pour la mise à feu d'un second cordeau. Les deux ensembles charge-relais sont séparés par un intervalle associé ou non à une entretoise tubulaire, intervalle rempli d'air ou d'une matière similaire. Quand la charge creuse est remplacée par une charge plate, celle-ci peut être pourvue du côté de l'intervalle d'un revêtement conique ou d'un disque creusé d'une rainure.French patent 71 10502 filed March 25, 1971, on behalf of the French State, for "Pyrotechnic transmission device", describes a pyrotechnic device for linear transmission of a signal consisting of a cord leading to a priming relay d '' a hollow charge with an effect directed towards a downstream load preceded by a priming relay for firing a second cord. The two charge-relay assemblies are separated by an interval associated or not with a tubular spacer, an interval filled with air or a similar material. When the hollow charge is replaced by a flat charge, this can be provided on the interval side with a conical coating or a disc hollowed out with a groove.

Cependant, les relais de ces différents systèmes de transmission de signaux pyrotechniques connus ne sont pas étanches et autolargables, et ne peuvent par conséquent pas être utilisés dans des ensembles structuraux de liaison ou de séparation exigeant un environnement non pollué après fonctionnement.However, the relays of these various known pyrotechnic signal transmission systems are not waterproof and self-releasable, and therefore cannot be used in structural connection or separation assemblies requiring an unpolluted environment after operation.

La présente invention a précisément pour objet un raccord pyrotechnique à parties étanches et autolargables pour la transmission d'un signal pyrotechnique d'une première à une seconde chaîne pyrotechnique, qui remédie à ces inconvénients. Il comporte deux relais pyrotechniques étanches montés en regard sur un même axe et susceptibles d'être séparés en conservant leur étanchéité, lesdits relais étant agencés de façon que le premier relais délivre un signal de détonation tel qu'il transite sous forme d'onde de choc à travers les fonds desdits relais et amorcent la charge explosive du second relais. Ainsi, le raccord selon l'invention permet le désaccouplement de deux parties constitutives et il supprime en cours d'opération la détérioration éventuelle de matériel adjacent, de même qu'il évite la pollution du milieu ambiant. Un tel raccord peut être utilisé dans le domaine des structures de liaison ou de séparation telles que deux étages d'engins balistiques, de satellites ou de leurs lanceurs. Il supprime la détérioration des matériels adjacents tels que les équipements électriques se trouvant à proximité du raccord et susceptibles d'être endommagés, car la transmission du signal de détonation entre les deux relais au contact et chargée d'explosifs s'effectue sans perforation d'aucun des deux fonds de relais, donc sans rejet de chaleur et de poudre, rendant possible leur séparation sans nuisance après passage du signal.The present invention specifically relates to a pyrotechnic connection with leaktight and self-releasable parts for the transmission of a pyrotechnic signal from a first to a second pyrotechnic chain, which overcomes these drawbacks. It comprises two waterproof pyrotechnic relays mounted facing one another on the same axis and capable of being separated while retaining their tightness, said relays being arranged so that the first relay delivers a detonation signal as it travels in the form of shock through the funds of said relays and initiate the explosive charge of the second relay. Thus, the connector according to the invention allows the uncoupling of two constituent parts and it eliminates during operation the possible deterioration of adjacent equipment, just as it avoids pollution of the ambient environment. Such a connector can be used in the field of connection or separation structures such as two stages of ballistic missiles, satellites or their launchers. It eliminates the deterioration of adjacent equipment such as electrical equipment located near the connection and liable to be damaged, since the transmission of the detonation signal between the two relays in contact and charged with explosives is carried out without perforation of neither of the two relay funds, therefore without rejection of heat and powder, making possible their separation without nuisance after passing the signal.

D'une manière plus précise, le raccord pyrotechnique selon l'invention comporte :

  • - un premier relais donneur, à fond étanche, amorcé par un premier relais renforçateur serti à l'extrémité de la première chaîne pyrotechnique, l'ensemble étant solidaire d'une première partie de structure séparable,
  • - un second relais receveur, à fond étanche, qui amorce un second relais renforçateur serti à l'extrémité de la seconde chaîne pyrotechnique, l'ensemble étant solidaire de la seconde partie de structure séparable, et, les relais donneur et receveur étant engagés en regard l'un de l'autre dans l'alésage d'une pièce de positionnement interne.
  • - des moyens de serrage pour plaquer l'un contre l'autre les fonds du relais donneur et du relais receveur ;
  • - des moyens pour assurer une étanchéité entre chacun desdits relais donneur et receveur et ladite pièce de positionnement interne ;
  • - des moyens pour assurer une étanchéité entre chacun desdits relais donneur et receveur et l'extérieur du raccord pyrotechnique.
More specifically, the pyrotechnic connector according to the invention comprises:
  • a first donor relay, with a sealed bottom, initiated by a first reinforcing relay crimped at the end of the first pyrotechnic chain, the assembly being integral with a first part of separable structure,
  • - a second receiver relay, with sealed base, which initiates a second reinforcing relay set at the end of the second pyrotechnic chain, the assembly being integral with the second part of separable structure, and, the donor and receiver relays being engaged in look at each other in the bore of an internal positioning part.
  • - clamping means for pressing the funds of the donor relay and the receiver relay against each other;
  • - Means for ensuring a seal between each of said donor and recipient relays and said internal positioning part;
  • - Means for ensuring a seal between each of said donor and receiver relays and the outside of the pyrotechnic connection.

Selon une réalisation préférentielle de l'invention, ladite première chaîne pyrotechnique s'engage à l'intérieur d'un premier manchon, la deuxième chaîne s'engage à l'intérieur d'un second manchon, les première et deuxième chaînes étant maintenues respectivement dans les premier et second manchons, par un premier et un second écrous vissés dans ces derniers.According to a preferred embodiment of the invention, said first pyrotechnic chain engages inside a first sleeve, the second chain engages inside a second sleeve, the first and second chains being held respectively in the first and second sleeves, by a first and a second nut screwed into the latter.

D'autres caractéristiques et avantages de l'invention apparaîtront mieux à la lecture de la description qui suit des exemples de réalisation donnés à titre explicatif et nullement limitatif, en référence aux figures annexées, sur lesquelles :

  • - la figure 1 est une vue en coupe d'un raccord pyrotechnique selon l'invention,
  • - la figure 2 est une vue en coupe d'une variante de réalisation de l'invention.
Other characteristics and advantages of the invention will appear better on reading the description which follows of the exemplary embodiments given by way of explanation and in no way limiting, with reference to the appended figures, in which:
  • FIG. 1 is a sectional view of a pyrotechnic connector according to the invention,
  • - Figure 2 is a sectional view of an alternative embodiment of the invention.

Sur la figure 1, on a désigné par la référence générale 2, le raccord pyrotechnique selon l'invention. Le raccord 2 permet la transmission d'un signal pyrotechnique dans le sens de la flèche A, d'une première chaîne pyrotechnique 4 à une seconde chaîne pyrotechnique 6. La chaîne pyrotechnique 4, constituée par un brin de cordeau détonant entouré d'une gaine 5, est terminée par un premier relais renforçateur 8, serti à son extrémité et s'engageant dans un premier relais pyrotechnique 10, dit relais donneur. La deuxième chaîne pyrotechnique 6 constituée par un brin de cordeau détonant entouré d'une gaine 7 est, de la même manière, terminée par un deuxième relais renforçateur 12 serti à son extrémité et s'engageant dans un second relais pyrotechnique 14, dit relais receveur. Le relais donneur 10 et le relais receveur 14 sont engagés en regard l'une de l'autre selon un même axe à l'intérieur d'une pièce de positionnement interne 16. Cette pièce 16 est percée d'une série d'alésages de diamètres différents. L'alésage central 18, plus étroit, reçoit le relais donneur 10. Dans un deuxième alésage 20 de la pièce de positionnement central 16 est engagée la partie épaulée 22 du relais receveur 14. Les fonds 24 et 26 de ces deux relais se trouvent au contact.In FIG. 1, the general reference 2 designates the pyrotechnic connector according to the invention. The connector 2 allows the transmission of a pyrotechnic signal in the direction of arrow A, from a first pyrotechnic chain 4 to a second pyrotechnic chain 6. The pyrotechnic chain 4, constituted by a strand of detonating cord surrounded by a sheath 5, is terminated by a first reinforcing relay 8, crimped at its end and engaging in a first pyrotechnic relay 10, called the donor relay. The second pyrotechnic chain 6 constituted by a strand of detonating cord surrounded by a sheath 7 is, in the same way, terminated by a second reinforcing relay 12 crimped at its end and engaging in a second pyrotechnic relay 14, called receiving relay . The donor relay 10 and the receiver relay 14 are engaged opposite one another along the same axis inside an internal positioning part 16. This part 16 is pierced with a series of bores of different diameters. The narrower central bore 18 receives the donor relay 10. In a second bore 20 of the central positioning piece 16 is engaged the shoulder portion 22 of the receiver relay 14. The bottoms 24 and 26 of these two relays are located at contact.

La première chaîne pyrotechnique 4, terminée par le relais renforçateur 8 s'engage à l'intérieur d'un premier manchon 28, tandis que la deuxième chaîne pyrotechnique 6 terminée par le relais renforçateur 12 s'engage à l'intérieur d'un deuxième manchon 30 solidaire de la structure 31. Le premier manchon 28 est vissé sur ladite pièce de positionnement interne 16 qui est elle-même solidaire de la structure 29. Les structures 29 et 31 sont susceptibles d'être séparées l'une de l'autre. Ce sont par exemple deux étages d'engins balistiques, de satellites ou de lanceurs. Un premier écrou 32 maintient l'extrémité de la première chaîne pyrotechnique à l'intérieur du premier manchon 28. D'une manière analogue, un second écrou 34 maintient l'extrémité de la seconde chaîne pyrotechnique à l'intérieur du second manchon 30. Deux écrous 49 et 50 assurent la fixation de l'ensemble du raccord sur les cadres de structure 29 et 31.The first pyrotechnic chain 4, terminated by the reinforcing relay 8 engages inside a first sleeve 28, while the second pyrotechnic chain 6 terminated by the reinforcing relay 12 engages inside a second sleeve 30 secured to the structure 31. The first sleeve 28 is screwed onto said internal positioning part 16 which is itself secured to the structure 29. The structures 29 and 31 are capable of being separated from one other. These are for example two stages of ballistic missiles, satellites or launchers. A first nut 32 holds the end of the first pyrotechnic chain inside the first sleeve 28. In a similar manner, a second nut 34 holds the end of the second pyrotechnic chain inside the second sleeve 30. Two nuts 49 and 50 secure the assembly of the fitting to the structural frames 29 and 31.

Le raccord pyrotechnique selon l'invention comporte des moyens de serrage pour plaquer l'un contre l'autre les fonds 24 et 26 du relais donneur 10 et du relais receveur 14. Ces moyens de serrage sont constitués par un ressort hélicoidal 36 logé à l'intérieur de l'alésage 37 de ladite pièce de positionnement interne 16, et comprimé entre le relais donneur 10 et le premier manchon 28.The pyrotechnic connector according to the invention comprises clamping means for pressing the bottoms 24 and 26 of the donor relay 10 and of the receiver relay 14 against each other. These clamping means consist of a helical spring 36 housed at the inside the bore 37 of said internal positioning part 16, and compressed between the donor relay 10 and the first sleeve 28.

Afin d'interdire toute possibilité de pollution du milieu ambiant par des jets de gaz ou de poudre, le raccord pyrotechnique 2 selon l'invention comporte des moyens pour assurer une étanchéité entre chacun desdits relais donneur 10 et receveur 14, et ladite pièce de positionnement central 16.In order to prohibit any possibility of pollution of the ambient environment by gas or powder jets, the pyrotechnic connector 2 according to the invention comprises means for sealing between each of said donor 10 and receiver 14 relays, and said positioning piece central 16.

Ces moyens sont constitués par différents joints toriques : un joint torique 38 placé entre le relais donneur 10 dans l'alésage 18, et d'autre part, un joint torique de centrage 40 placé dans le relais receveur 14 de l'alésage 20.These means consist of different O-rings: an O-ring 38 placed between the donor relay 10 in the bore 18, and on the other hand, a centering O-ring 40 placed in the receiver relay 14 of the bore 20.

Le raccord pyrotechnique 2 comporte encore des moyens pour assurer une étanchéité entre le relais donneur 10 et l'extérieur du raccord pyrotechnique. Ces moyens sont constitués par différents joints : un joint torique 42 placé dans une gorge du premier relais renforçateur 8, un joint 44 placé entre la pièce de positionnement interne 16 et ledit premier manchon 28. D'autre part, du côté receveur, les moyens pour assurer une étanchéité entre le relais receveur 14 et l'extérieur du raccord pyrotechnique 2 sont constitués par un joint torique 46 placé dans une gorge du relais renforçateur 12 et par un joint 48 placé entre le relais receveur 14 et ledit second manchon 30.The pyrotechnic connector 2 also includes means for ensuring a seal between the donor relay 10 and outside the pyrotechnic connection. These means consist of various seals: an O-ring 42 placed in a groove of the first reinforcing relay 8, a seal 44 placed between the internal positioning part 16 and said first sleeve 28. On the other hand, on the receiver side, the means to ensure a seal between the receiver relay 14 and the outside of the pyrotechnic connector 2 are constituted by an O-ring 46 placed in a groove of the reinforcing relay 12 and by a seal 48 placed between the receiver relay 14 and said second sleeve 30.

Le fonctionnement du relais 2 est le suivant. Un détonateur (non représenté) initie la chaîne de transmission 4 pour faire détoner l'explosif du relais donneur 10. Le signal de détonation délivré par ce relais donneur est suffisamment énergétique pour transiter sous forme d'onde de choc à travers les cloisons étanches 24 et 26 constituées par les fonds des relais, et amorcer l'explosif du relais receveur 14, afin de transmettre le signal pyrotechnique à la chaîne de transmission 6. Après le passage du signal, sans perforation d'aucun des deux fonds 24 et 26, les deux relais donneur et receveur peuvent être séparés sans nuisances pour le milieu ambiant.The operation of relay 2 is as follows. A detonator (not shown) initiates the transmission chain 4 to detonate the explosive of the donor relay 10. The detonation signal delivered by this donor relay is sufficiently energetic to transit in the form of a shock wave through the watertight partitions 24 and 26 formed by the relay funds, and initiate the explosive of the receiver relay 14, in order to transmit the pyrotechnic signal to the transmission chain 6. After the signal has passed, without perforation of any of the two funds 24 and 26, the two donor and recipient relays can be separated without harming the environment.

Dans la variante de réalisation du raccord représentée à la figure 2, le premier relais pyrotechnique, dit relais "donneur" 10 reçoit le signal pyrotechnique de la première chaîne de transmission 4 constituée par un brin de cordeau détonant entouré d'une gaine 5 et terminé par un relais renforçateur 8 serti à son extrémité.In the variant embodiment of the connector shown in FIG. 2, the first pyrotechnic relay, called the "donor" relay 10, receives the pyrotechnic signal from the first transmission chain 4 constituted by a strand of detonating cord surrounded by a sheath 5 and terminated by a reinforcing relay 8 crimped at its end.

Le second relais pyrotechnique, dit relais "receveur" 14', amorcé par le relais 10 retransmet le signal pyrotechnique à une seconde chaîne de transmission 6 constituée par un brin de cordeau détonant entouré d'une gaine 7 et terminé par un relais renforçateur 12 serti à son extrémité.The second pyrotechnic relay, known as a "receiver" relay 14 ', initiated by relay 10 re transmits the pyrotechnic signal to a second transmission chain 6 constituted by a strand of detonating cord surrounded by a sheath 7 and terminated by a reinforcing relay 12 crimped at its end.

Le relais donneur 10 et le relais receveur 14' sont engagés en regard l'un de l'autre, sur un même axe, dans une pièce de positionnement 16' dont l'extrémité 16'a conformée en tronc de cône reçoit l'extrémité 14'a également conformée en tronc de cône du relais 14', les fonds 24 et 26 de ces deux relais se trouvant au contact.The donor relay 10 and the receiver relay 14 'are engaged facing each other, on the same axis, in a positioning part 16' whose end 16'a shaped as a truncated cone receives the end 14 ′ also has a truncated cone shape of the relay 14 ′, the bottoms 24 and 26 of these two relays being in contact.

La première chaîne pyrotechnique 4 s'engage à l'intérieur d'un manchon 28' dont l'extrémité interne vient s'appuyer sur le relais donneur 10, ladite chaîne étant vissée dans ledit manchon 28' au moyen d'un écrou 32. Ce manchon 28' est lui-même vissé dans la pièce 16' rendue solidaire d'un cadre 29 de la structure.The first pyrotechnic chain 4 engages inside a sleeve 28 'whose internal end comes to bear on the donor relay 10, said chain being screwed into said sleeve 28' by means of a nut 32. This sleeve 28 'is itself screwed into the part 16' made integral with a frame 29 of the structure.

La seconde chaîne pyrotechnique 6 s'engage à l'intérieur d'un manchon 30 dont l'extrémité interne 30a vient se visser sur la partie arrière 14'b du relais 14'. Le manchon 30 est rendu solidaire d'un cadre de structure 31 tandis que la seconde chaîne 6 est vissée dans le manchon 30 au moyen d'un écrou 34. Deux écrous 49 et 50 assurent la fixation de l'ensemble du raccord sur les cadres de structure 29 et 31.The second pyrotechnic chain 6 engages inside a sleeve 30 whose internal end 30a is screwed onto the rear part 14'b of the relay 14 '. The sleeve 30 is made integral with a structural frame 31 while the second chain 6 is screwed into the sleeve 30 by means of a nut 34. Two nuts 49 and 50 ensure the fixing of the entire fitting to the frames of structure 29 and 31.

Les moyens de serrage destinés à plaquer l'un contre l'autre les fonds 24 et 26 du relais donneur 10 et du relais receveur 141 sont constitués par la pièce de positionnement interne 16' vissée sur le manchon 28' et par un contre-écrou 51 s'appuyant intérieurement sur une collerette 28'a du manchon 28', et vissé sur la partie externe 16'b de la pièce 16. Un tel système de vis et de contre-écrou de blocage assure une meilleure tenue aux vibrations de l'ensemble du raccord.The clamping means intended to press the bottoms 24 and 26 of the donor relay 10 and of the receiver relay 14 1 against each other are constituted by the internal positioning part 16 'screwed onto the sleeve 28' and by a counter nut 51 resting internally on a flange 28'a of the sleeve 28 ', and screwed onto the external part 16'b of the part 16. Such a system of screws and counter locking nut provides better resistance to vibrations of the entire fitting.

L'étanchéité de la partie "donneur" du raccord est assurée par un joint 52 situé entre le relais 10 et le manchon 28' tandis que l'étanchéité de la partie "receveur" est assurée par un joint, en l'occurrence un joint de colle entre le relais 14' et le manchon 30.The sealing of the "donor" part of the fitting is ensured by a seal 52 located between the relay 10 and the sleeve 28 'while the sealing of the "recipient" part is ensured by a seal, in this case a seal. glue between the relay 14 'and the sleeve 30.

Claims (7)

1. Raccord pyrotechnique à parties étanches et autolargables pour la transmission d'un signal pyrotechnique d'une première à une seconde chaîne pyrotechnique, caractérisé en ce qu'il comporte : - un premier relais (10), donneur, à fond étanche (24), amorcé par un premier relais renforçateur (8) serti à l'extrémité de la première chaîne pyrotechnique (4), l'ensemble étant solidaire d'une première partie de structure séparable (29) , -un second relais (14), receveur, à fond étanche (26), qui amorce un second relais renforçateur (12) serti à l'extrémité de la seconde chaîne pyrotechnique (6), l'ensemble étant solidaire de la seconde partie de structure séparable (31) et les relais donneur (10) et receveur (14) étant engagés en regard dans un alésage d'une pièce de positionnement interne (16), les fonds (24 et 26) desdits relais se trouvant au contact ; - des moyens de serrage pour plaquer l'un contre l'autre les fonds du relais donneur et du relais receveur ; - des moyens pour assurer une étanchéité entre chacun desdits relais donneur (10) et receveur (14) et ladite pièce de positionnement interne (16) ; - des moyens pour assurer une étanchéité entre chacun desdits relais donneur (10) et receveur (14) et l'extérieur du raccord pyrotechnique. 1. Pyrotechnic connection with waterproof and self-releasable parts for the transmission of a pyrotechnic signal from a first to a second pyrotechnic chain, characterized in that it comprises: - A first relay (10), donor, with sealed bottom (24), initiated by a first reinforcing relay (8) crimped at the end of the first pyrotechnic chain (4), the assembly being integral with a first part separable structure (29), a second relay (14), receiver, with sealed base (26), which initiates a second reinforcing relay (12) crimped at the end of the second pyrotechnic chain (6), the assembly being integral with the second part of separable structure (31) and the donor (10) and receiver (14) relays being engaged opposite in a bore of an internal positioning part (16), the bottoms (24 and 26) of said relays being in contact; - clamping means for pressing the funds of the donor relay and the receiver relay against each other; - Means for ensuring a seal between each of said donor (10) and receiver (14) relays and said internal positioning part (16); - Means for ensuring a seal between each of said donor relay (10) and receiver (14) and the outside of the pyrotechnic connection. 2. Raccord pyrotechnique selon la revendication 1, caractérisé en ce que ladite première chaîne pyrotechnique (4) s'engage à l'intérieur d'un premier manchon (28), la deuxième chaîne (6) s'engage à l'intérieur d'un second manchon (30), les première et deuxième chaînes (4 et 6) étant maintenues respectivement dans les premier et second manchons (28 et 30) par un premier et un second écrous (32 et 34) vissés dans ces derniers.2. Pyrotechnic connector according to claim 1, characterized in that said first pyrotechnic chain (4) engages inside a first sleeve (28), the second chain (6) engages inside a second sleeve (30), the first and second chains (4 and 6) being held respectively in the first and second sleeves (28 and 30) by first and second nuts (32 and 34) screwed into the latter. 3. Raccord pyrotechnique selon la revendication 2, caractérisé en ce que les moyens de serrage pour plaquer l'un contre l'autre les fonds du relais donneur et du relais receveur sont constitués par un ressort (36) logé à l'intérieur de l'alésage (37) de la pièce de positionnement interne (16) et comprimé entre le relais donneur (10 et le premier manchon (28).3. Pyrotechnic connection according to claim 2, characterized in that the clamping means for pressing one against the other the funds of the donor relay and the receiver relay are constituted by a spring (36) housed inside the 'bore (37) of the internal positioning part (16) and compressed between the donor relay (10 and the first sleeve (28). 4. Raccord pyrotechnique selon la reven- - dication 1, caractérisé en ce que les moyens de serrage pour plaquer l'un contre l'autre les fonds du relais donneur (10) et du relais receveur (14') comprennent une liaison par cônes entre ledit relais receveur (10) et la pièce de positionnement interne (16') et un ensemble vissé constitué par ladite pièce de positionnement s'appuyant sur le ralais donneur (10) et vissé sur le premier manchon (28') et par un contre-écrou (51) s'appuyant sur une collerette (28'a) dudit premier manchon (28') et vissé sur la partie extenre (16'b) de ladite pièce de positionnement (16).4. Pyrotechnic connection according to claim 1, characterized in that the clamping means for pressing one against the other the funds of the donor relay (10) and the receiver relay (14 ') comprise a cone connection between said receiver relay (10) and the internal positioning part (16 ') and a screwed assembly constituted by said positioning part resting on the donor link (10) and screwed on the first sleeve (28') and by a lock nut (51) resting on a flange (28'a) of said first sleeve (28 ') and screwed onto the external part (16'b) of said positioning piece (16). 5. Raccord pyrotechnique selon la revendication 1, caractérisé en ce que les moyens pour assurer une étanchéité entre chacun desdits relais donneur (10) et receveur (14) et ladite pièce de positionnement interne (16), sont constitués par un joint (38 et 40) placé entre chacun des relais et l'alésage (18, 20) de la pièce de positionnement interne (16) dans lequel ils sont engagés.5. Pyrotechnic connection according to claim 1, characterized in that the means for ensuring a seal between each of said donor relay (10) and receiver (14) and said internal positioning part (16), are constituted by a seal (38 and 40) placed between each of the relays and the bore (18, 20) of the internal positioning part (16) in which they are engaged. 6. Raccord pyrotechnique selon les revendications 1 et 2, caractérisé en ce que les moyens pour assurer une étanchéité entre le relais donneur (10) et l'extérieur du raccord pyrotechnique (2) sont constitués par un joint (42) placé entre ledit premier relais renforçateur (8) et ledit premier manchon (28), et par un joint (44) placé entre ce dernier et ladite pièce de positionnement interne (16).6. Pyrotechnic connection according to claims 1 and 2, characterized in that the means for ensuring a seal between the donor relay (10) and the outside of the pyrotechnic connection (2) consist of a seal (42) placed between said first reinforcing relay (8) and said first sleeve (28), and by a seal (44) placed between the latter and said internal positioning part (16). 7. Raccord pyrotechnique selon les revendications 1 et 2, caractérisé en ce que les moyens pour assurer une étanchéité entre le relais receveur (14) et l'extérieur du raccord pyrotechnique (2) sont constitués par un joint (46) placé entre ledit deuxième relais renforçateur (12) et ledit deuxième manchon (30) et par un joint (48) placé entre ledit deuxième manchon (30) et le relais receveur (14).7. Pyrotechnic connection according to claims 1 and 2, characterized in that the means for ensuring a seal between the receiver relay (14) and the outside of the pyrotechnic connection (2) consist of a seal (46) placed between said second reinforcing relay (12) and said second sleeve (30) and by a seal (48) placed between said second sleeve (30) and the receiving relay (14).
EP19800401716 1979-12-07 1980-12-01 Self separating pyrotechnic connector having sealed parts Expired EP0030498B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7930062A FR2470757A1 (en) 1979-12-07 1979-12-07 PYROTECHNIC CONNECTION WITH SEALED AND SELF-RELEASABLE PARTS
FR7930062 1979-12-07

Publications (2)

Publication Number Publication Date
EP0030498A1 true EP0030498A1 (en) 1981-06-17
EP0030498B1 EP0030498B1 (en) 1984-05-23

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EP19800401716 Expired EP0030498B1 (en) 1979-12-07 1980-12-01 Self separating pyrotechnic connector having sealed parts

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EP (1) EP0030498B1 (en)
DE (1) DE3067976D1 (en)
FR (1) FR2470757A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2559451A1 (en) * 1984-02-09 1985-08-16 Dassault Avions CONNECTION DEVICE FOR A PYROTECHNIC CIRCUIT RESULTING IN A PLANE GLASS
US4592281A (en) * 1982-07-29 1986-06-03 Special Devices, Inc. Arming and firing device
US4608926A (en) * 1984-09-13 1986-09-02 Thiokol Corporation Swivel type through bulkhead initiator
US4660472A (en) * 1985-10-07 1987-04-28 Morton Thiokol Inc. Optical through bulkhead initiator and safe-arm device
US4759291A (en) * 1987-07-06 1988-07-26 Halliburton Company Through bulkhead explosive initiator for oil well usage
GB2200977A (en) * 1987-02-11 1988-08-17 Aeci Ltd A propagating device for low energy fuses
FR2648554A1 (en) * 1989-06-20 1990-12-21 Thomson Brandt Armements SYSTEM UTILIZING AN ELECTROPYROTECHNIC DEVICE FOR SEQUENTIALLY SELECTING THE OPERATION OF A BATTERY OF GENERATORS OF GAS
WO1994001734A1 (en) * 1992-07-06 1994-01-20 Autoliv Development Ab Shock pulse coupling arrangement
US7360487B2 (en) * 2003-07-10 2008-04-22 Baker Hughes Incorporated Connector for perforating gun tandem
FR2998361A1 (en) * 2012-11-21 2014-05-23 Dassault Aviat Pyrotechnic connection device for connection of circuits of pyrotechnic chain for military aircraft, has connecting elements brought into contact with each other such that internal channels face each other with interposition of distal wall

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2862131B1 (en) 2003-11-06 2006-06-30 Eads Space Transportation Sa PYROTECHNIC CONNECTION WITH DISSOCIABLE PARTS AND LAUNCHER COMPRISING AT LEAST ONE SUCH CONNECTION

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Publication number Priority date Publication date Assignee Title
CH43319A (en) * 1908-01-21 1909-04-16 Jean Harle Double acting cord
US3129663A (en) * 1961-08-11 1964-04-21 Aircraft Armaments Inc Fittings for low energy detonating cord
US3678853A (en) * 1970-06-12 1972-07-25 Us Navy Quick disconnect explosive connector assembly
US3855934A (en) * 1972-09-28 1974-12-24 Us Army Blind mating connector for missile sections

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH43319A (en) * 1908-01-21 1909-04-16 Jean Harle Double acting cord
US3129663A (en) * 1961-08-11 1964-04-21 Aircraft Armaments Inc Fittings for low energy detonating cord
US3678853A (en) * 1970-06-12 1972-07-25 Us Navy Quick disconnect explosive connector assembly
US3855934A (en) * 1972-09-28 1974-12-24 Us Army Blind mating connector for missile sections

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4592281A (en) * 1982-07-29 1986-06-03 Special Devices, Inc. Arming and firing device
FR2559451A1 (en) * 1984-02-09 1985-08-16 Dassault Avions CONNECTION DEVICE FOR A PYROTECHNIC CIRCUIT RESULTING IN A PLANE GLASS
GB2153981A (en) * 1984-02-09 1985-08-29 Dassault Avions Connecting device for a pyrotechnic circuit leading to an aircraft canopy
US4608926A (en) * 1984-09-13 1986-09-02 Thiokol Corporation Swivel type through bulkhead initiator
US4660472A (en) * 1985-10-07 1987-04-28 Morton Thiokol Inc. Optical through bulkhead initiator and safe-arm device
GB2200977A (en) * 1987-02-11 1988-08-17 Aeci Ltd A propagating device for low energy fuses
GB2200977B (en) * 1987-02-11 1990-02-28 Aeci Ltd A propagating device for low energy fuses
US4759291A (en) * 1987-07-06 1988-07-26 Halliburton Company Through bulkhead explosive initiator for oil well usage
FR2648554A1 (en) * 1989-06-20 1990-12-21 Thomson Brandt Armements SYSTEM UTILIZING AN ELECTROPYROTECHNIC DEVICE FOR SEQUENTIALLY SELECTING THE OPERATION OF A BATTERY OF GENERATORS OF GAS
EP0404644A1 (en) * 1989-06-20 1990-12-27 Thomson-Brandt Armements Electropyrotechnic device for triggering the functioning of a gas generator
US5092237A (en) * 1989-06-20 1992-03-03 Thomson-Brandt Armements System using an electropyrotechnic device intended to trigger the operation of a gas generator
WO1994001734A1 (en) * 1992-07-06 1994-01-20 Autoliv Development Ab Shock pulse coupling arrangement
US7360487B2 (en) * 2003-07-10 2008-04-22 Baker Hughes Incorporated Connector for perforating gun tandem
FR2998361A1 (en) * 2012-11-21 2014-05-23 Dassault Aviat Pyrotechnic connection device for connection of circuits of pyrotechnic chain for military aircraft, has connecting elements brought into contact with each other such that internal channels face each other with interposition of distal wall

Also Published As

Publication number Publication date
EP0030498B1 (en) 1984-05-23
FR2470757A1 (en) 1981-06-12
DE3067976D1 (en) 1984-06-28
FR2470757B1 (en) 1983-04-01

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