EP0214401A1 - Method of embedding a sensitive item in a protective container - Google Patents
Method of embedding a sensitive item in a protective container Download PDFInfo
- Publication number
- EP0214401A1 EP0214401A1 EP86109525A EP86109525A EP0214401A1 EP 0214401 A1 EP0214401 A1 EP 0214401A1 EP 86109525 A EP86109525 A EP 86109525A EP 86109525 A EP86109525 A EP 86109525A EP 0214401 A1 EP0214401 A1 EP 0214401A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- component
- housing body
- housing
- protective housing
- seat
- 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- Withdrawn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
- 230000001681 protective effect Effects 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000004033 plastic Substances 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000005304 joining Methods 0.000 claims description 2
- 238000002604 ultrasonography Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 239000002360 explosive Substances 0.000 abstract description 8
- 150000001875 compounds Chemical class 0.000 abstract description 4
- 238000004382 potting Methods 0.000 abstract description 3
- 239000000383 hazardous chemical Substances 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 abstract description 2
- 239000011347 resin Substances 0.000 abstract description 2
- 230000035939 shock Effects 0.000 description 7
- 229920003002 synthetic resin Polymers 0.000 description 6
- 239000000057 synthetic resin Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 2
- 239000012190 activator Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B39/00—Packaging or storage of ammunition or explosive charges; Safety features thereof; Cartridge belts or bags
Definitions
- the invention relates to a method for embedding a sensitive component in a protective housing made of plastic with non-positive fixing of the component in the protective housing.
- Electrochemical and electronic components must be installed in devices that are exposed to extreme mechanical loads (vibration, shock) during transport, storage or operation in such a way that the loads mentioned do not lead to damage to these components with subsequent uselessness of the higher-level device. This applies in particular to ammunition.
- the method which is generally accepted today to avoid vibration or shock-induced damage to the components takes advantage of the properties of certain hardenable synthetic resins which flow before curing (during the "pot life") capable and have the desired mechanical properties after curing (high strength and toughness, high shock absorption capacity due to plastic deformability).
- the required mechanical properties are usually found in synthetic resin systems, e.g. Multi-component epoxy resins, partially achieved with the addition of shock-absorbing extenders such as Micro glass balloons.
- the target mixing ratio of the reactive components must be kept within narrow limits if it is to be avoided that mixtures which have not completely reacted result; on the one hand, these do not reach the target values of the mechanical properties and on the other hand they can release chemical substances that damage the other materials and materials present, as well as the explosives in the case of ammunition. To ensure the correct mixing ratio, a considerable amount of testing is required.
- the equipment for preparing and dosing the reactive components is technically complex and requires intensive maintenance.
- the reactive components of the synthetic resin systems are to be regarded as hazardous substances, the use of which places considerable demands on the hygienic and safety-related monitoring of the affected workplaces.
- the invention has for its object to provide a method of the type mentioned, which does not require the use of potting compounds, can be carried out with little effort and provides effective protection of the sensitive component against shock and vibration.
- the solution to this problem is, according to the invention, that after inserting the component into a seat of the prefabricated housing body at least one Ver Forming area of the housing body parallel to the seat is plastically deformed such that the component is clamped in the housing body and that the housing body is closed with an elastically deformable cover that presses against the component and presses it against the seat.
- a three-dimensional non-positive fixing of the component in the housing body takes place in two steps, dimensional tolerances of the protective housing and component being compensated for by elastic and / or plastic deformation of the protective housing.
- the complex technical equipment required for the preparation, mixing and metering of reactive synthetic resins and their curing, as required by the prior art, are not necessary.
- Both the housing body and possibly the cover enclosing it are prefabricated parts which can be manufactured separately using the usual techniques, for example in the injection molding process, and which are fully cured in the embedding process. There is therefore no risk of damage to the embedded component or other components of the higher-level device due to aggressive resin components.
- the component is pressed firmly against the seat by the cover, which is elastically deformed in the process, and is thereby non-positively fixed in the housing body.
- the cover is preferably connected to the housing body by welding or adhesive joining.
- the method according to the invention is therefore particularly suitable for components which contain explosive or components which, together with the protective housing, are used in a device which contains explosive, such as mines or other ammunition.
- the plastic of the protective housing must be compatible with the explosive used.
- Acrylonitrile-butadiene-styrene copolymers (ABS), polyamides (PA), polycarbonates (PC) with or without fiber reinforcement are particularly suitable as the material for the protective housing.
- a particular advantage of the invention is that it is not necessary to fix all of the elements of the encapsulated component within the protective housing. Rather, it is sufficient to fix the components with a high mass (eg battery, activator or the like) in the manner described, while components with a low mass (eg cables, flexprint circuits and the like) "float" in one or more cavities of the housing. can be installed. This allows the components with low mass to move freely within limits in the protective housing, so that the risk of tearing off electrical connections when subjected to shock or vibration is reduced.
- a high mass eg battery, activator or the like
- components with a low mass eg cables, flexprint circuits and the like
- the component that is embedded in the protective housing according to the method according to the invention can be an electrical functional assembly, such as e.g. around the activator of a mine.
- the protective housing is preferably used to hold electrical components which are inserted into a device which contains explosives, e.g. into a mine or other ammunition.
- the housing 1 has a trough-shaped housing body 10, which consists of plastic and is prefabricated by injection molding.
- the top of the housing body 10 is closed with the lid 13.
- the cover 13 is pressed onto the housing body 10 and the component 12 under the influence of ultrasound, the weld seams 14 being formed between the cover 13 and the housing body 10.
- the cover 13 is elastic and presses the component 12 radially firmly against the trough-shaped seat 11, so that radial play between the component 12 and the protective housing is no longer possible.
- the trough-shaped seat 11 is designed like a polygon in the embodiment shown. It is not necessary for the component 12 to bear against the seat 11 over the entire surface in order to obtain the required fixation. It is only important that the cross section of the cavity, which receives the component 12, decreases toward the end facing away from the cover 13.
- the housing body 10 according to FIG. 1 has, in addition to the cavity receiving the component 12, a further cavity 15 in which smaller components 16, e.g. Cables, flex print circuits and the like.
- the components 16, which have a low mass, are not fixed in the cavity 15, so that they can move freely there.
- FIG. 2 shows the housing body 10 immediately after the component 12 has been inserted.
- the length of the cavity for receiving the component 12 is somewhat greater than the length of this component, so that a gap 17 is formed between an end wall of the housing body and the associated end wall of the component 12 arises.
- This end wall forms the deformation region 18 (FIG. 3), which is deformed after the insertion of the component 12 in the first step of the method by plastic deformation in the axial direction (arrow 19) and thereby deflects in the transverse direction and axially against the end wall of the component 12 presses.
- the component 12 is clamped between the two end walls of the housing body 10, so that axial play is no longer possible.
- the cover 13 can be welded on, which then seals the opening of the housing body 10 and has the effect that radial play between the component and the protective housing is no longer possible.
Abstract
Anstelle der üblichen Einbettung eines empfindlichen Bauteiles in Vergußmasse wird vorgeschlagen, ein vorgefertigtes Schutzgehäuse zu verwenden, das einen vorgefertigten Gehäusekörper (10) aufweist, in den das Bauteil (12) zunächst mit Spiel eingesetzt wird. Der Verformungsbereich (18) des Gehäusekörpers (10) wird plastisch deformiert, um das Bauteil (12) in axialer Richtung klemmend zu fixieren. Dann wird ein elastisch verformbarer Deckel auf dem Gehäusekörper befestigt, der das Bauteil radial gegen einen Sitz gedrückt hält. Das Schutzgehäuse eignet sich insbesondere für den Einsatz in Geräten, die Explosivstoffe enthalten, weil während des Einbettungsvorganges keine gefährlichen Arbeitsstoffe benutzt werden und auch später keine aggressiven Harzkomponenten austreten. Instead of the usual embedding of a sensitive component in potting compound, it is proposed to use a prefabricated protective housing which has a prefabricated housing body (10) into which the component (12) is first inserted with play. The deformation area (18) of the housing body (10) is plastically deformed in order to fix the component (12) in the axial direction by clamping. Then an elastically deformable cover is attached to the housing body, which holds the component pressed radially against a seat. The protective housing is particularly suitable for use in devices that contain explosives, because no hazardous substances are used during the embedding process and no aggressive resin components escape later.
Description
Die Erfindung betrifft ein Verfahren zur Einbettung eines empfindlichen Bauteils in ein aus Kunststoff bestehendes Schutzgehäuse unter kraftschlüssiger Fixierung des Bauteils in dem Schutzgehäuse.The invention relates to a method for embedding a sensitive component in a protective housing made of plastic with non-positive fixing of the component in the protective housing.
Elektrochemische und elektronische Bauelemente müssen in Geräten, die während Transport, Lagerung oder Funktion extremen mechanischen Belastungen (Vibration, Schock) ausgesetzt sind, derartig eingebaut sein, daß die genannten Belastungen nicht zur Schädigung dieser Bauelemente mit nachfolgender Unbrauchbarkeit des übergeordneten Gerätes führen. Dies gilt in besonderem Maße für Munition. Das heutigentags allgemein akzeptierte Verfahren zur Vermeidung vibrations- oder schockinduzierter Schädigungen der Bauelemente macht sich die Eigenschaften bestimmter härtbarer Kunstharze zunutze, die vor dem Aushärten (während der "Topfzeit") fließ fähig sind und nach dem Aushärten die erwünschten mechanischen Eigenschaften aufweisen (hohe Festigkeit und Zähigkeit, hohes Schockabsorptionsvermögen durch plastische Verformbarkeit).Electrochemical and electronic components must be installed in devices that are exposed to extreme mechanical loads (vibration, shock) during transport, storage or operation in such a way that the loads mentioned do not lead to damage to these components with subsequent uselessness of the higher-level device. This applies in particular to ammunition. The method which is generally accepted today to avoid vibration or shock-induced damage to the components takes advantage of the properties of certain hardenable synthetic resins which flow before curing (during the "pot life") capable and have the desired mechanical properties after curing (high strength and toughness, high shock absorption capacity due to plastic deformability).
Dabei geht man davon aus, daß die einzubauenden Bauelemente mit der Gerätestruktur zu einem einheitlichen festen Körper vergossen werden müssen, damit die erwünschten Eigenschaften erzielt werden können.It is assumed that the components to be installed with the device structure must be cast into a uniform solid body so that the desired properties can be achieved.
Die geforderten mechanischen Eigenschaften werden üblicherweise von Kunstharzsystemen, z.B. Mehrkomponenten-Epoxid-Harzen, erreicht, z.T. unter Zusatz schockabsorbierender Extender wie z.B. Mikro-Glasballons. Das Soll-Mischungsverhältnis der reaktiven Komponenten muß in engen Grenzen eingehalten werden, wenn vermieden werden soll, daß nicht vollständig abreagierte Mischungen resultieren; diese erreichen zum einen nicht die Sollwerte der mechanischen Eigenschaften und können zum anderen chemische Stoffe freisetzen, die die weiteren anwesenden Werkstoffe und Materialien, sowie im Falle von Munition, auch die Explosivstoffe schädigen. Zur Sicherstellung des richtigen Mischungsverhältnisses muß ein erheblicher Prüfaufwand getrieben werden. Die Betriebsmittel zum Aufbereiten und Dosieren der reaktiven Komponenten sind technisch aufwendig und bedürfen intensiver Wartung.The required mechanical properties are usually found in synthetic resin systems, e.g. Multi-component epoxy resins, partially achieved with the addition of shock-absorbing extenders such as Micro glass balloons. The target mixing ratio of the reactive components must be kept within narrow limits if it is to be avoided that mixtures which have not completely reacted result; on the one hand, these do not reach the target values of the mechanical properties and on the other hand they can release chemical substances that damage the other materials and materials present, as well as the explosives in the case of ammunition. To ensure the correct mixing ratio, a considerable amount of testing is required. The equipment for preparing and dosing the reactive components is technically complex and requires intensive maintenance.
Die genannten Kunstharzsysteme erreichen die Sollwerte ihrer Eigenschaften erst im Verlauf der Härtungsrekation, die typisch mehrere Stunden bei erhöhter Temperatur in Anspruch nimmt. Aus diesem Grund sind zur Verarbeitung solcher Kunstharzsysteme Temperaturkammern erforderlich, in denen die vergossenen Geräte während der Härtungsreaktion aufbewahrt werden müssen. Diese Notwendigkeit erhöht den technischen Aufwand und stellt einen Kapazitätsengpaß dar.The synthetic resin systems mentioned only reach the setpoint values for their properties in the course of the curing reaction, which typically takes several hours at elevated temperature. For this reason, temperature chambers are required to process such synthetic resin systems, in which the encapsulated devices during the hardening reaction must be saved. This necessity increases the technical effort and represents a capacity bottleneck.
Die reaktiven Komponenten der Kunstharzsysteme sind als gefährliche Arbeitsstoffe anzusehen, deren Verwendung erhebliche Anforderungen an die arbeitshygienische und sicherheitstechnische Überwachung der betroffenen Arbeitsplätze stellt.The reactive components of the synthetic resin systems are to be regarded as hazardous substances, the use of which places considerable demands on the hygienic and safety-related monitoring of the affected workplaces.
Werden Bauelemente mit Vergußmassen nach dem Stand der Technik gegen schock- oder vibrationsinduzierte Schädigungen geschützt, dann werden im Regelfall die notwendigen elektrischen Verbindungen (Drähte, Litzen, flexible Leiterbahnen) bündig mit umschlossen. Wird der ausgehärtete Körper z.B. einer Schockbelastung unterworfen, die die wirkenden Kohäsionskräfte übertrifft, so reißt die Vergußmasse und erfahrungsgemäß die umschlossenen elektrischen Verbindungen - insbesondere flexible Leiterbahnen - ebenfalls. Auf diese Weise können Funktionsverluste entstehen, ohne daß die zu schützenden aktiven und passiven elektronischen Bauelement geschädigt zu sein brauchen.If components with casting compounds according to the state of the art are protected against shock or vibration-induced damage, the necessary electrical connections (wires, strands, flexible conductor tracks) are usually flush-enclosed. If the hardened body e.g. subjected to a shock load that exceeds the effective cohesive forces, the potting compound and experience has shown that the enclosed electrical connections - in particular flexible conductor tracks - also tear. In this way, functional losses can occur without the active and passive electronic components to be protected needing to be damaged.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art zu schaffen, das ohne die Verwendung von Vergußmassen auskommt, mit geringem Aufwand ausführbar ist und einen wirksamen Schutz des empfindlichen Bauteils gegen Schock und Vibrationen bietet.The invention has for its object to provide a method of the type mentioned, which does not require the use of potting compounds, can be carried out with little effort and provides effective protection of the sensitive component against shock and vibration.
Die Lösung dieser Aufgabe besteht erfindungsgemäß darin, daß nach dem Einsetzen des Bauteiles in einen Sitz des vorgefertigten Gehäusekörpers mindestens ein Ver formungsbereich des Gehäusekörpers parallel zum Sitz derart plastisch deformiert wird, daß das Bauteil in dem Gehäusekörper festgeklemmt wird und daß der Gehäusekörper mit einem elastisch deformierbaren Deckel verschlossen wird, der gegen das Bauteil drückt und dieses gegen den Sitz preßt.The solution to this problem is, according to the invention, that after inserting the component into a seat of the prefabricated housing body at least one Ver Forming area of the housing body parallel to the seat is plastically deformed such that the component is clamped in the housing body and that the housing body is closed with an elastically deformable cover that presses against the component and presses it against the seat.
Bei dem erfindungsgemäßen Verfahren erfolgt eine dreidimensionale kraftschlüssige Fixierung des Bauelementes in dem Gehäusekörper in zwei Schritten, wobei Maßtoleranzen von Schutzgehäuse und Bauelement durch elastische und/oder plastische Verformung des Schutzgehäuses ausgeglichen werden. Dabei sind die nach dem Stand der Technik erforderlichen aufwendigen technischen Einrichtungen zur Aufbereitung, Mischung und Dosierung von reaktiven Kunstharzen sowie deren Aushärtung nicht nötig. Sowohl der Gehäusekörper als auch ggf. der ihn umschließende Deckel sind vorgefertigte Teile, die mit den üblichen Techniken, z.B. im Spritzgußverfahren, separat hergestellt werden können und die bei dem Einbettungsprozeß vollständig ausgehärtet sind. Es besteht daher nicht die Gefahr von Beschädigungen des eingebetteten Bauteils oder weiterer Komponenten des übergeordneten Geräts durch aggressive Harzkomponenten. Das Bauteil wird von dem Deckel, der hierbei elastisch deformiert wird, fest gegen den Sitz gedrückt und hierdurch kraftschlüssig im Gehäusekörper fixiert. Vorzugsweise wird der Deckel mit dem Gehäusekörper durch Schweiß- oder Klebefügung verbunden. Das erfindungsgemäße Verfahren eignet sich daher insbesondere für solche Bauteile, die Explosivstoff enthalten oder Bauteile, die zusammen mit dem Schutzgehäuse in ein Gerät, das Explosivstoff enthält, eingesetzt werden, wie z.B. Minen oder andere Munition.In the method according to the invention, a three-dimensional non-positive fixing of the component in the housing body takes place in two steps, dimensional tolerances of the protective housing and component being compensated for by elastic and / or plastic deformation of the protective housing. The complex technical equipment required for the preparation, mixing and metering of reactive synthetic resins and their curing, as required by the prior art, are not necessary. Both the housing body and possibly the cover enclosing it are prefabricated parts which can be manufactured separately using the usual techniques, for example in the injection molding process, and which are fully cured in the embedding process. There is therefore no risk of damage to the embedded component or other components of the higher-level device due to aggressive resin components. The component is pressed firmly against the seat by the cover, which is elastically deformed in the process, and is thereby non-positively fixed in the housing body. The cover is preferably connected to the housing body by welding or adhesive joining. The method according to the invention is therefore particularly suitable for components which contain explosive or components which, together with the protective housing, are used in a device which contains explosive, such as mines or other ammunition.
Wenn das Schutzgehäuse zum Einbau von Geräten mit Explosivstoff oder in Geräten, die Explosivstoffe enthalten, verwendet wird, muß der Kunststoff des Schutzgehäuses mit dem verwendeten Explosivstoff verträglich sein. Als Material für das Schutzgehäuse eignen sich insbesondere Acrylnitril-Butadien-Styrol-Copolymerisate (ABS) , Polyamide (PA) , Polycarbonate (PC) mit oder ohne Faserverstärkung.If the protective housing is used for the installation of devices with explosive or in devices containing explosives, the plastic of the protective housing must be compatible with the explosive used. Acrylonitrile-butadiene-styrene copolymers (ABS), polyamides (PA), polycarbonates (PC) with or without fiber reinforcement are particularly suitable as the material for the protective housing.
Ein besonderer Vorteil der Erfindung besteht darin, daß es nicht erforderlich ist, sämtliche Elemente des gekapselten Bauteiles innerhalb des Schutzgehäuses zu fixieren. Vielmehr genügt es, die Komponenten mit hoher Masse (z.B. Batterie, Aktivator o.dgl.) in der beschriebenen Weise festzulegen, während Komponenten mit niedriger Masse (z.B. Kabel, Flexprintschaltungen u.dgl.) in einem oder mehreren Hohlräumen des Gehäuses "schwimmend" eingebaut sein können. Dadurch können sich die Komponenten mit geringer Masse in dem Schutzgehäuse in Grenzen frei bewegen, so daß die Gefahr des Abreißens elektrischer verbindungen bei Stoß- oder Vibrationsbelastung verringert ist.A particular advantage of the invention is that it is not necessary to fix all of the elements of the encapsulated component within the protective housing. Rather, it is sufficient to fix the components with a high mass (eg battery, activator or the like) in the manner described, while components with a low mass (eg cables, flexprint circuits and the like) "float" in one or more cavities of the housing. can be installed. This allows the components with low mass to move freely within limits in the protective housing, so that the risk of tearing off electrical connections when subjected to shock or vibration is reduced.
Bei dem Bauteil, das nach dem erfindungsgemäßen Verfahren in das Schutzgehäuse eingebettet wird, kann es sich um eine elektrische Funktionsbaugruppe handeln, wie z.B. um den Aktivator einer Mine. Vorzugsweise dient das Schutzgehäuse zur Aufnahme elektrischer Komponenten, die in ein Gerät eingesetzt werden, das Explosivstoffe enthält, z.B. in eine Mine oder einen anderen Munitionsgegenstand.The component that is embedded in the protective housing according to the method according to the invention can be an electrical functional assembly, such as e.g. around the activator of a mine. The protective housing is preferably used to hold electrical components which are inserted into a device which contains explosives, e.g. into a mine or other ammunition.
Im folgenden werden unter Bezugnahme auf die Zeichnungen Ausführungsbeispiele der Erfindung näher erläutert. Es zeigen:
- Fig. 1 einen Querschnitt durch das fertige Schutzgehäuse,
- Fig. 2 einen Längsschnitt des Gehäusekörpers mit eingesetztem Bauteil vor der Deformierung des Verformungsbereichs und
- Fig. 3 eine ähnliche Darstellung wie Fig. 2 nach Durchführung der Verformung.
- 1 shows a cross section through the finished protective housing,
- Fig. 2 shows a longitudinal section of the housing body with inserted component before the deformation of the deformation area and
- Fig. 3 is a representation similar to Fig. 2 after performing the deformation.
Das Schutzgehäuse nach Fig. 1 weist einen trogförmigen Gehäusekörper 10 auf, der aus Kunststoff besteht und im Spritzgußverfahren vorgefertigt ist. Der nur an der Oberseite offene Gehäusekörper 10 weist eine Mulde auf, die den Sitz 11 für das einzubettende Bauteil 12 bildet. Die Oberseite des Gehäusekörpers 10 ist mit dem Deckel 13 verschlossen. Dabei wird der Deckel 13 unter Ultraschall-Einwirkung auf den Gehäusekörper 10 und das Bauteil 12 aufgepreßt, wobei zwischen Deckel 13 und Gehäusekörper 10 die Schweißnähte 14 entstehen. Der Deckel 13 ist elastisch und drückt das Bauteil 12 radial fest gegen den muldenförmigen Sitz 11, so daß kein radiales Spiel zwischen dem Bauteil 12 und dem Schutzgehäuse mehr möglich ist. Der muldenförmige Sitz 11 ist bei dem dargestellten Ausführungsbeispiel polygonzugähnlich gestaltet. Es ist nicht erforderlich, daß das Bauteil 12 vollflächig an dem Sitz 11 anliegt, um die erforderliche Fixierung zu erhalten. Wichtig ist nur, daß der Querschnitt des Hohlraums, der das Bauteil 12 aufnimmt, sich zu dem dem Deckel 13 abgewandten Ende hin verringert.1 has a trough-
Der Gehäusekörper 10 nach Fig. 1 weist seitlich neben dem das Bauteil 12 aufnehmenden Hohlraum einen weiteren Hohlraum 15 auf, in dem sich kleinere Bauteile 16, z.B. Kabel, Flexprintschaltungen u.dgl., befinden. Die Bauteile 16, die eine geringe Masse haben, sind in dem Hohlraum 15 nicht fixiert, so daß sie sich dort frei bewegen können.The
Fig. 2 zeigt den Gehäusekörper 10 unmittelbar nach dem Einsetzen des Bauteils 12. Die Länge des Hohlraums zur Aufnahme des Bauteils 12 ist etwas größer als die Länge dieses Bauteils, so daß zwischen einer Stirnwand des Gehäusekörpers und der zugehörigen Stirnwand des Bauteils 12 eine Spalte 17 entsteht. Diese Stirnwand bildet den Verformungsbereich 18 (Fig. 3), der nach dem Einsetzen des Bauteils 12 bei dem ersten Schritt des Verfahrens durch plastische Verformung in axilaer Richtung (Pfeil 19) deformiert wird und dadurch in Querrichtung ausweicht und axial gegen die Stirnwand des Bauteils 12 drückt. Hierdurch wird das Bauteil 12 zwischen den beiden Stirnwänden des Gehäusekörpers 10 festgeklemmt, so daß kein axiales Spiel mehr möglich ist. Danach kann der Deckel 13 aufgeschweißt werden, der die Öffnung des Gehäusekörpers 10 dann dichtend verschließt und bewirkt, daß kein radiales Spiel zwischen Bauteil und Schutzgehäuse mehr möglich ist.2 shows the
Claims (7)
dadurch gekennzeichnet,
daß nach dem Einsetzen des Bauteils (12) in einen Sitz (11) des vorgefertigten Gehäusekörpers (10) mindestens ein Verformungsbereich (18) des Gehäusekörpers parallel zum Sitz (11) derart plastisch deformiert wird, daß das Bauteil in dem Gehäusekörper festgeklemmt wird, und daß der Gehäusekörper mit einem elastisch deformierbaren Deckel (13) verschlossen wird, der gegen das Bauteil drückt und dieses gegen den Sitz (11) preßt.1. A method for embedding a sensitive component in a protective housing made of plastic, with the component being non-positively fixed in the protective housing,
characterized,
that after inserting the component (12) into a seat (11) of the prefabricated housing body (10) at least one deformation region (18) of the housing body is plastically deformed parallel to the seat (11) in such a way that the component is clamped in the housing body, and that the housing body is closed with an elastically deformable cover (13) which presses against the component and presses it against the seat (11).
dadurch gekennzeichnet,
daß der Mantel einen das Bauteil (12) von mindestens zwei entgegengesetzten Seiten her umfassenden Gehäusekörper (10) aufweist, welcher an mindestens einer dieser Seiten einen Verformungsbereich (18) aufweist, der zum Festklemmen des Bauteils (12) in Richtung auf das Bauteil plastisch deformiert ist, und daß der Gehäusekörper (10) mit einem einstückigen Deckel (13) verschlossen ist, der gegen das Bauteil (12) drückt und dieses unter Spannung gegen einen Sitz (11) des Gehäusekörpers (10) preßt.5. Protective housing for sensitive components, with a jacket made of plastic, which encloses the component with frictional fixation,
characterized,
that the casing has a housing body (10) which comprises the component (12) from at least two opposite sides and which has a deformation region (18) on at least one of these sides, which plastically deforms in the direction of the component in order to clamp the component (12) and that the housing body (10) is closed with an integral cover (13) which presses against the component (12) and presses it under tension against a seat (11) of the housing body (10).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3529884 | 1985-08-21 | ||
DE19853529884 DE3529884A1 (en) | 1985-08-21 | 1985-08-21 | METHOD FOR EMBEDDING A SENSITIVE COMPONENT IN A PROTECTIVE HOUSING |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0214401A1 true EP0214401A1 (en) | 1987-03-18 |
Family
ID=6279001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86109525A Withdrawn EP0214401A1 (en) | 1985-08-21 | 1986-07-11 | Method of embedding a sensitive item in a protective container |
Country Status (4)
Country | Link |
---|---|
US (1) | US4730236A (en) |
EP (1) | EP0214401A1 (en) |
CA (1) | CA1269068A (en) |
DE (1) | DE3529884A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5229641A (en) * | 1989-11-25 | 1993-07-20 | Hitachi Maxell, Ltd. | Semiconductor card and manufacturing method therefor |
DE19928565A1 (en) * | 1999-06-22 | 2001-01-11 | Tyco Electronics Logistics Ag | Attachment device for optoelectronic transducer component, has shaped region(s) deformed by positioning component on pin strip for making shape locking connection |
DE102015212616A1 (en) | 2015-07-06 | 2017-01-12 | Zf Friedrichshafen Ag | Protective housing for flexible component fixing and printed circuit board with protective housing |
US11248891B2 (en) * | 2019-06-12 | 2022-02-15 | Insights International Holdings, Llc | Ordnance ballistics deployment system |
US11644289B2 (en) * | 2021-09-28 | 2023-05-09 | Insights International Holdings, Llc | Ordnance delivery system using a protective housing as an antenna |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1988034A (en) * | 1934-07-26 | 1935-01-15 | Joseph M Price | Container |
US2019860A (en) * | 1933-06-28 | 1935-11-05 | Allan W James | Carboy box |
FR1601106A (en) * | 1968-07-15 | 1970-08-10 | Container for long ammunition | |
US3635330A (en) * | 1970-04-20 | 1972-01-18 | Container Corp | Spacer for cased cylindrical objects |
FR2363078A1 (en) * | 1976-08-27 | 1978-03-24 | Foerenade Fabriksverken | Rubber sleeved grenade protection case - has outer sleeve doubled over to form good seal and protect against shock and damp |
DE3002284A1 (en) * | 1980-01-23 | 1981-07-30 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Shock absorbing holder for explosive shell - has cushioning pad and end cover released by pulling locking rod from one end |
DE3134518A1 (en) * | 1981-09-01 | 1983-06-30 | DVG Deutsche Verpackungsmittel GmbH, 8505 Röthenbach | Axial buffer as a packaging element for large-calibre ammunition |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB744621A (en) * | 1953-04-24 | 1956-02-08 | Mcmurdo Instr Company Ltd | Improvements in and relating to packaging materials |
DE1697030U (en) * | 1954-11-24 | 1955-04-21 | Rudolf Kuegler | PACKAGING BODY. |
DE1750577U (en) * | 1956-11-30 | 1957-08-14 | Ernst Wohlleb | MEASURING CIRCLE. |
GB978357A (en) * | 1961-12-22 | 1964-12-23 | Telephone Mfg Co Ltd | Improvements in or relating to electrical capacitors |
AT333644B (en) * | 1974-06-04 | 1976-12-10 | Hirsch Hans Schmuckverpackung | FOAM INSERT FOR PACKAGING |
CA1047975A (en) * | 1975-09-10 | 1979-02-06 | Wayne E. Kleiner | Shock absorbing container |
GB2040569B (en) * | 1978-12-26 | 1983-09-01 | Murata Manufacturing Co | Chip-like electronic component series and method for supplying chip-like electronic components |
DE8407557U1 (en) * | 1984-03-13 | 1984-07-19 | Irbit Research + Consulting AG, Fribourg | Foam cushion for sales goods or the like |
-
1985
- 1985-08-21 DE DE19853529884 patent/DE3529884A1/en not_active Withdrawn
-
1986
- 1986-07-11 EP EP86109525A patent/EP0214401A1/en not_active Withdrawn
- 1986-08-20 CA CA000516376A patent/CA1269068A/en not_active Expired - Fee Related
- 1986-08-21 US US06/898,598 patent/US4730236A/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2019860A (en) * | 1933-06-28 | 1935-11-05 | Allan W James | Carboy box |
US1988034A (en) * | 1934-07-26 | 1935-01-15 | Joseph M Price | Container |
FR1601106A (en) * | 1968-07-15 | 1970-08-10 | Container for long ammunition | |
US3635330A (en) * | 1970-04-20 | 1972-01-18 | Container Corp | Spacer for cased cylindrical objects |
FR2363078A1 (en) * | 1976-08-27 | 1978-03-24 | Foerenade Fabriksverken | Rubber sleeved grenade protection case - has outer sleeve doubled over to form good seal and protect against shock and damp |
DE3002284A1 (en) * | 1980-01-23 | 1981-07-30 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Shock absorbing holder for explosive shell - has cushioning pad and end cover released by pulling locking rod from one end |
DE3134518A1 (en) * | 1981-09-01 | 1983-06-30 | DVG Deutsche Verpackungsmittel GmbH, 8505 Röthenbach | Axial buffer as a packaging element for large-calibre ammunition |
Also Published As
Publication number | Publication date |
---|---|
US4730236A (en) | 1988-03-08 |
DE3529884A1 (en) | 1987-02-26 |
CA1269068A (en) | 1990-05-15 |
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Effective date: 19870717 |
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Owner name: HUELS TROISDORF AKTIENGESELLSCHAFT |
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Owner name: HUELS TROISDORF AKTIENGESELLSCHAFT |
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Owner name: DYNAMIT NOBEL AKTIENGESELLSCHAFT |
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Inventor name: SENKOWSKI, GOTTFRIED Inventor name: RUNGE-ESCHEN, FRANK, DR. Inventor name: HEINEMEYER, FRIEDRICH, DR. Inventor name: NASS, WINFRIED Inventor name: STURM, JOACHIM Inventor name: KAMP, GERT |