EP0524391A1 - Sealing for pyrotechnical fuses, smoke pots etc. - Google Patents
Sealing for pyrotechnical fuses, smoke pots etc. Download PDFInfo
- Publication number
- EP0524391A1 EP0524391A1 EP92108313A EP92108313A EP0524391A1 EP 0524391 A1 EP0524391 A1 EP 0524391A1 EP 92108313 A EP92108313 A EP 92108313A EP 92108313 A EP92108313 A EP 92108313A EP 0524391 A1 EP0524391 A1 EP 0524391A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ring
- housing
- disc
- edge
- pyrotechnic
- 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.)
- Withdrawn
Links
Images
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
- F42B3/24—Cartridge closures or seals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/02—Fuze bodies; Fuze housings
Definitions
- the present invention relates to a seal for pyrotechnic devices such as e.g. Firelighters and fog sentences.
- the set is not protected against entering gases during the drying of the lacquer, which may last several days, and can therefore only be delivered after intermediate storage, with a particular problem in the formation of bubbles due to the gases escaping from the set.
- the paints become brittle and are therefore not safe in the long term.
- the present invention therefore has for its object to provide a seal for such pyrotechnic sets, which does not have the above disadvantages, but in which the tightness is ensured with the manufacture and which is less susceptible to external influences and thus stable over longer periods .
- a seal for pyrotechnic devices such as, in particular, igniters and smoke bodies
- the pyrotechnic compound being sealed at the edges against a external atmosphere by a disc having openings which are covered, in accordance with the invention in a particularly simple and elegant manner in that the pyrotechnic compound accommodating it Housing has a cross-sectional constriction in the form of a recess, a bead or an upper edge predetermined by an adjusting container, the disc rests against the cross-sectional constriction and an O-ring is arranged on it, which rests against the inner wall of the housing opposite the cross-sectional constriction, and that the O-ring is squeezed by rolling up the housing against the disk, possibly with a cover being jammed.
- the production is so simple and immediately protected against gases attacking from the outside, because immediately after rolling the edge of the housing by squeezing the O-ring, the final state is reached without having to wait longer setting times.
- the O-ring consists of a rubber-elastic material and, due to its elastic properties, adapts to the inaccurate shape caused by the curling, flows into the bumps and thus ensures a surprisingly high level of tightness.
- the cross-sectional constriction can be created with sufficient wall thicknesses by an upper recess, which absorbs the squeezing forces when the edge of the housing is rolled in. However, it can also be formed by an inwardly molded bead, the manufacturing tolerances being absorbed by the O-ring.
- the edge can also be that of an adjustment container, which can also be made of plastic, which, in the case of thin wall thicknesses, only has to be glued to the container at its upper region in order to prevent yielding due to cold material flow.
- Mist bodies can be produced in a particularly advantageous manner in which an igniter protrudes into the space above the pyrotechnic mist set.
- These mist sets have the disadvantage described above that volatile constituents attack the lacquer seal and can impair the ignitability of the igniter, whereas the rubber types of O-rings are insensitive to this.
- the igniter has a recess at the end facing the mist set, against which a ring rests, which is covered with a cover and onto which an O-ring is squeezed by rolling up the edge of the housing, and the housing of the pyrotechnic set has an upper bead, against which a disc rests on the edge, in which the igniter is held, and which, if necessary, is also sealed by means of an O-ring by clamping the cover by rolling in the edge of the housing and squeezing the O-ring.
- the seal according to the invention is therefore present twice.
- a mist body container 2 there is a mist set 9 with an overlying heating set 12.
- a free space 13 into which an igniter 8 protrudes with a hand release 14.
- the igniter 8 is sealed and held centrally in a disc 1 within a collar 15.
- the disk 1 lies on a bead 4 drawn inwards into the free space 13 and has an outlet opening 16 for smoke generated by the smoke set 9.
- This outlet opening can be covered with a film only after assembly, but the film can also cover the pane beforehand.
- the hole cover is destroyed by the hot fog and opens the opening 16.
- the O-ring 5 made of rubber or another flowable material, such as soft metals or plastic, which is pressed onto the disc 1 by crushing 6 and thus seals the disc 1 at the edge.
- the disc 1 can also be supported against the setting container receiving the pyrotechnic set 9 or 12, for which purpose it may be glued to the inner surface of the housing 2.
- Figure 2 shows the detail Z of the lighter 8.
- the cross-sectional constriction is formed by a recess 3, which on the other hand weakens the open edge 17 of the lighter so that it can be rolled up.
- the O-ring 5 is first pressed against a cover 7, which in turn supports the ring 1 'with a central opening against the recess 3.
- the cover is blown when the igniter is triggered by the hot ignition gases.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Air Bags (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine Abdichtung für pyrotechnische Gerätschaften, wie z.B. Anzünder und Nebelsätze.The present invention relates to a seal for pyrotechnic devices such as e.g. Firelighters and fog sentences.
Diese pyrotechnischen Gegenstände müssen gegen von außen zutretende Atmosphären, wie Feuchtigkeit oder im Falle der Zünder von aus den Nebelsätzen austretenden Gasen, geschützt werden, die den jeweiligen pyrotechnischen Satz zerstören würden. Dazu wird herkömmlich der obere Rand des den pyrotechnischen Satz beherbergenden Gehäuses umgeknickt und mit Hilfe eines Lacks eine Scheibe von unten innen gegen den so geschaffenen Rand geklebt.These pyrotechnic objects must be protected against atmospheres from outside, such as moisture or, in the case of detonators, gases escaping from the smoke sets, which would destroy the respective pyrotechnic set. For this purpose, the upper edge of the housing which houses the pyrotechnic set is conventionally folded over and, with the aid of a lacquer, a pane is glued from below on the inside against the edge thus created.
Diese Vorgehensweise ist nachteilig. Zum einen ist der Satz während des unter Umständen mehrtägigen Austrocknens des Lacks nicht gegen zutretende Gase geschützt und kann somit erst nach Zwischenlagerung ausgeliefert werden, wobei ein besonderes Problem in der Blasenbildung durch die aus dem Satz austretenden Gase besteht. Zum anderen verspröden die Lacke und sind somit nicht auf längere Dauer sicher.This approach is disadvantageous. On the one hand, the set is not protected against entering gases during the drying of the lacquer, which may last several days, and can therefore only be delivered after intermediate storage, with a particular problem in the formation of bubbles due to the gases escaping from the set. On the other hand, the paints become brittle and are therefore not safe in the long term.
Die vorliegende Erfindung hat sich daher die Aufgabe gestellt, eine Abdichtung für derartige pyrotechnische Sätze zu schaffen, die die vorstehenden Nachteile nicht aufweist, sondern bei welcher die Dichtigkeit mit der Herstellung gewährleistet ist und die weniger anfällig gegen äußere Einflüsse und damit über größere Zeiträume stabil ist.The present invention therefore has for its object to provide a seal for such pyrotechnic sets, which does not have the above disadvantages, but in which the tightness is ensured with the manufacture and which is less susceptible to external influences and thus stable over longer periods .
Die Lösung dieser Aufgabe gelingt bei einer Abdichtung für pyrotechnische Gerätschaften, wie insbesondere Anzünder und Rauchkörper, wobei der pyrotechnische Satz über eine abgedeckte Durchbrüche aufweisende Scheibe gegen äußere Atmosphäre randseitig abgedichtet ist, erfindungsgemäß in besonders einfacher und eleganter Weise dadurch, daß das den pyrotechnischen Satz aufnehmende Gehäuse eine Querschnittsverengung in Form eines Einstichs, einer Sicke oder eines durch einen Einstellbehälter vorgegebenen oberen Randes besitzt, die Scheibe gegen die Querschnittsverengung anliegt und auf ihr ein O-Ring angeordnet ist, der gegen die innere Wandung des Gehäuses der Querschnittsverengung gegenüber anliegt, und daß der O-Ring durch eine Einrollung des Gehäuses gegen die Scheibe, gegebenenfalls unter Einklemmung einer Abdeckung, gequetscht ist.This object is achieved with a seal for pyrotechnic devices, such as, in particular, igniters and smoke bodies, the pyrotechnic compound being sealed at the edges against a external atmosphere by a disc having openings which are covered, in accordance with the invention in a particularly simple and elegant manner in that the pyrotechnic compound accommodating it Housing has a cross-sectional constriction in the form of a recess, a bead or an upper edge predetermined by an adjusting container, the disc rests against the cross-sectional constriction and an O-ring is arranged on it, which rests against the inner wall of the housing opposite the cross-sectional constriction, and that the O-ring is squeezed by rolling up the housing against the disk, possibly with a cover being jammed.
Die Herstellung ist dabei deshalb so einfach und sofort gegen von außen angreifende Gase geschützt, weil unmittelbar nach dem Einrollen des Gehäuserandes unter Einquetschen des O-Ringes der Endzustand erreicht ist, ohne daß längere Abbindezeiten abgewartet werden müssen. Der O-Ring besteht dabei aus einem gummielastischen Material und paßt sich wegen seiner elastischen Eigenschaften der an sich ungenauen, durch das Einrollen bedingten Formgebung an, fließt in die Unebenheiten und gewährleistet derart eine überraschend hohe Dichtigkeit.The production is so simple and immediately protected against gases attacking from the outside, because immediately after rolling the edge of the housing by squeezing the O-ring, the final state is reached without having to wait longer setting times. The O-ring consists of a rubber-elastic material and, due to its elastic properties, adapts to the inaccurate shape caused by the curling, flows into the bumps and thus ensures a surprisingly high level of tightness.
Die Querschnittsverengung kann bei ausreichenden Wandstärken durch einen oberen Einstich geschaffen werden, die die Quetschkräfte beim Einrollen des Gehäuserandes auffängt. Sie kann jedoch auch durch eine nach innen eingeformte Sicke gebildet werden, wobei auch hier die Fertigungstoleranzen vom O-Ring aufgefangen werden.The cross-sectional constriction can be created with sufficient wall thicknesses by an upper recess, which absorbs the squeezing forces when the edge of the housing is rolled in. However, it can also be formed by an inwardly molded bead, the manufacturing tolerances being absorbed by the O-ring.
Der Rand kann auch derjenige eines Einstellbehälters sein, der auch aus Kunststoff bestehen kann, wobei dieser bei dünnen Wandstärken lediglich an seinem oberen Bereich gegen den Behälter geklebt zu werden braucht, um ein Nachgeben durch kalten Materialfluß zu verhindern.The edge can also be that of an adjustment container, which can also be made of plastic, which, in the case of thin wall thicknesses, only has to be glued to the container at its upper region in order to prevent yielding due to cold material flow.
In besonders vorteilhafter Weise lassen sich derart Nebelkörper herstellen, bei denen ein Zünder in den Raum oberhalb des pyrotechnischen Nebelsatzes ragt. Diese Nebelsätze haben den oben beschriebenen Nachteil, daß flüchtige Bestandteile die Lackdichtung angreifen und die Zündfähigkeit des Anzünders beeinträchtigen können, wohingegen die Gummisorten von O-Ringen hiergegen unempfindlich sind. Dabei weist der Anzünder am dem Nebelsatz zugekehrten Ende einen Einstich auf, gegen den ein Ring anliegt, der mit einer Abdeckung abgedeckt ist und auf die ein O-Ring durch eine Einrollung des Gehäuserandes gequetscht ist, und das Gehäuse des pyrotechnischen Satzes eine obere Sicke, gegen die eine Scheibe randseitig anliegt, in der der Anzünder gehalten ist, und die gegebenenfalls unter Einklemmen einer Abdeckung ebenfalls über einen O-Ring durch Einrollung des Gehäuserandes unter Quetschen des O-Ringes gedichtet ist. Bei einem derartigen Nebelkörper ist somit die erfindungsgemäße Abdichtung zweimal vorhanden.Mist bodies can be produced in a particularly advantageous manner in which an igniter protrudes into the space above the pyrotechnic mist set. These mist sets have the disadvantage described above that volatile constituents attack the lacquer seal and can impair the ignitability of the igniter, whereas the rubber types of O-rings are insensitive to this. The igniter has a recess at the end facing the mist set, against which a ring rests, which is covered with a cover and onto which an O-ring is squeezed by rolling up the edge of the housing, and the housing of the pyrotechnic set has an upper bead, against which a disc rests on the edge, in which the igniter is held, and which, if necessary, is also sealed by means of an O-ring by clamping the cover by rolling in the edge of the housing and squeezing the O-ring. In such a fog body, the seal according to the invention is therefore present twice.
Anhand der beiliegenden Figuren wird die vorliegende Erfindung näher erläutert.
-
Figur 1 - zeigt einen Nebelkörper
-
Figur 2 - zeigt die Abdichtung eines Anzünders.
- Figure 1
- shows a fog body
- Figure 2
- shows the seal of a lighter.
In einem Nebelkörperbehälter 2 befindet sich ein Nebelsatz 9 mit einem darüberliegenden Heizsatz 12. Oberhalb des Nebelsatzes ist ein freier Raum 13 belassen, in den ein Anzünder 8 mit einem Handauslöser 14 ragt. Der Anzünder 8 ist abgedichtet und zentral in einer Scheibe 1 innerhalb eines Kragens 15 gehalten. Die Scheibe 1 liegt auf einer nach innen in den freien Raum 13 gezogenen Sicke 4 auf und besitzt eine Austrittsöffnung 16 für durch den Nebelsatz 9 erzeugten Rauch.In a
Diese Austrittsöffnung kann allein nach Montage durch eine Folie abgeklebt werden, die Folie kann aber auch schon vorher die Scheibe abdecken. Die Lochabdeckung wird durch den heißen Nebel zerstört und gibt die Öffnung 16 frei.This outlet opening can be covered with a film only after assembly, but the film can also cover the pane beforehand. The hole cover is destroyed by the hot fog and opens the opening 16.
Oberhalb der Scheibe 1 befindet sich der O-Ring 5 aus Gummi oder einem anderen fließfähigen Material, wie Weichmetalle oder Kunststoff, der von der Einrollung 6 unter Quetschverformung auf die Scheibe 1 gepreßt wird und so die Scheibe 1 randseitig abdichtet.Above the
Anstelle der Sicke 4 kann die Scheibe 1 auch gegen den den pyrotechnischen Satz 9 bzw. 12 aufnehmenden Einstellbehälter abgestützt werden, wozu dieser gegebenenfalls gegen die innere Oberfläche des Gehäuses 2 geklebt wird.Instead of the bead 4, the
Figur 2 zeigt die Einzelheit Z des Anzünders 8. Hier ist die Querschnittsverengung durch einen Einstich 3 gebildet, der andererseits den offenen Rand 17 des Anzünders soweit schwächt, daß er einrollbar wird. Figure 2 shows the detail Z of the lighter 8. Here, the cross-sectional constriction is formed by a
Hierbei wird der O-Ring 5 zunächst gegen eine Abdeckung 7 gepreßt, die ihrerseits den eine zentrale Öffnung aufweisenden Ring 1' gegen den Einstich 3 abstützt. Die Abdeckung wird beim Auslösen des Anzünders durch die heißen Zündgase durchgebrannt.Here, the O-ring 5 is first pressed against a
- 1, 1'1, 1 '
- Scheibe, RingDisc, ring
- 22nd
- Gehäusecasing
- 33rd
- Einstichpuncture
- 44th
- SickeSurround
- 55
- O-RingO-ring
- 66
- EinrollungCurling
- 77
- Abdeckungcover
- 88th
- AnzünderLighter
- 99
- NebelsatzMist theorem
- 1010th
- EinstellbehälterAdjustment container
- 1111
- oberer Randupper edge
- 1212
- AnzündsatzIgnition charge
- 1313
- freier Raumblank
- 1414
- HandauslöserManual release
- 1515
- Kragencollar
- 1616
- Öffnungopening
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19914123848 DE4123848A1 (en) | 1991-07-18 | 1991-07-18 | SEALING FOR PYROTECHNICAL EQUIPMENT |
DE4123848 | 1991-07-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0524391A1 true EP0524391A1 (en) | 1993-01-27 |
Family
ID=6436472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92108313A Withdrawn EP0524391A1 (en) | 1991-07-18 | 1992-05-16 | Sealing for pyrotechnical fuses, smoke pots etc. |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0524391A1 (en) |
DE (1) | DE4123848A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995032761A1 (en) * | 1994-06-01 | 1995-12-07 | Dynamit Nobel Aktiengesellschaft | Fire extinguishing generator with a housing |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR584356A (en) * | 1923-08-08 | 1925-02-06 | Rocket cap | |
DE3034197A1 (en) * | 1980-09-11 | 1982-04-22 | Beermann, Paul, 5750 Menden | Air and watertight blasting fuse - with sealing cap crimped over ends |
DE8406393U1 (en) * | 1984-03-01 | 1985-07-04 | Diehl GmbH & Co, 8500 Nürnberg | Pyrotechnic delay component |
FR2612287A1 (en) * | 1987-03-12 | 1988-09-16 | France Etat Armement | SMOKE PROJECTILE AND AMMUNITION THUS EQUIPPED |
-
1991
- 1991-07-18 DE DE19914123848 patent/DE4123848A1/en not_active Withdrawn
-
1992
- 1992-05-16 EP EP92108313A patent/EP0524391A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR584356A (en) * | 1923-08-08 | 1925-02-06 | Rocket cap | |
DE3034197A1 (en) * | 1980-09-11 | 1982-04-22 | Beermann, Paul, 5750 Menden | Air and watertight blasting fuse - with sealing cap crimped over ends |
DE8406393U1 (en) * | 1984-03-01 | 1985-07-04 | Diehl GmbH & Co, 8500 Nürnberg | Pyrotechnic delay component |
FR2612287A1 (en) * | 1987-03-12 | 1988-09-16 | France Etat Armement | SMOKE PROJECTILE AND AMMUNITION THUS EQUIPPED |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995032761A1 (en) * | 1994-06-01 | 1995-12-07 | Dynamit Nobel Aktiengesellschaft | Fire extinguishing generator with a housing |
Also Published As
Publication number | Publication date |
---|---|
DE4123848A1 (en) | 1993-01-21 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU MC NL PT SE |
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18W | Application withdrawn |
Withdrawal date: 19930113 |