EP0586450A1 - Plug-type connector for electroconductive cables. - Google Patents

Plug-type connector for electroconductive cables.

Info

Publication number
EP0586450A1
EP0586450A1 EP92910583A EP92910583A EP0586450A1 EP 0586450 A1 EP0586450 A1 EP 0586450A1 EP 92910583 A EP92910583 A EP 92910583A EP 92910583 A EP92910583 A EP 92910583A EP 0586450 A1 EP0586450 A1 EP 0586450A1
Authority
EP
European Patent Office
Prior art keywords
melt adhesive
hot melt
plug connection
sleeve
plug
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
EP92910583A
Other languages
German (de)
French (fr)
Other versions
EP0586450B1 (en
Inventor
Reimar Heucher
Juergen Wichelhaus
Kurt Schueller
Bettina Becker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of EP0586450A1 publication Critical patent/EP0586450A1/en
Application granted granted Critical
Publication of EP0586450B1 publication Critical patent/EP0586450B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/04—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation using electrically conductive adhesives
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables

Definitions

  • the invention relates to a connector for electrically conductive cables and their manufacture.
  • the invention would like to provide plug connections for electrically conductive cables which are simple to manufacture and which still function reliably despite negative conditions such as dust, moisture, vibration and strong temperature differences during use and extreme temperature stress during further processing.
  • the plug connection contains a hot melt adhesive with a viscosity of more than 8000 mPa * s at 200 ° C.
  • the melt viscosity is 12,000 to 60,000 mPa-s at 200 ° C when measured using a RVT type Brookfield Thermocel viscometer with the spindle 27.
  • RVT Brookfield Thermocel viscometer with the spindle 27.
  • the best results are obtained with a viscosity from 20,000 to 35,000 mPa «s received.
  • With increasing melt viscosity, especially above 80,000 the cavity is no longer reproducibly filled and the pressure tightness is no longer guaranteed.
  • a cable is understood to mean a well-insulated electrical cable provided with protective sleeves.
  • Plug connections namely plugs and plug sleeves or couplings, are used to extend and connect them to devices.
  • the plug is the part of the plug connection provided with contact pins and the plug sleeve or coupling the part provided with the contact sleeves. The connection is established by pushing the contact pin into the contact sleeve.
  • the invention is particularly suitable for producing plug connections for coaxial cables, in particular for broadband cable sleeves.
  • the coaxial cable consists of an inner conductor, e.g. made of copper or aluminum, which is penetrated by panes, walls or an insulating material with low dielectric loss, e.g. Polystyrene or ceramics exactly in the center of the outer conductor, e.g. made of copper, aluminum, brass, etc.
  • the diameter ratio of inner: outer conductor largely determines the wave resistance, an important parameter of the coaxial cable. The conditions within the cable should also be preserved when they are connected, especially the central arrangement.
  • the use of the hot-melt adhesive according to the invention is particularly suitable in that it completely fills the space between the inner conductor and outer conductor or between the outer sleeve and the contact pins or contact sleeves.
  • the wave resistance can be influenced in a defined manner by the shape or cavities of the hot melt adhesive.
  • the cable (1) consists of a protective sheath (2), an outer conductor (3), an insulator (4) and an inner conductor (5).
  • the connector sleeve or coupling according to the invention contains a contact sleeve (6) for connection to the connector, which is insulated from the outer sleeve (8) and kept centered by the hot melt adhesive (7).
  • the hot-melt adhesive for the plug connection not only has the typical task of a hot-melt adhesive, namely to firmly connect two joining parts to one another after cooling from the melt. In the present case, he also has the task seal, fill and isolate. In the present case, not only should the cable (1) be held together with the plug connection, but also the access of moisture and dust in particular between the cable (1) and the outer sleeve (8) and between the contact sleeve (6) and the insulating one Hot melt adhesive (7) can be prevented and the space between the contact sleeve (6) or the pin and the outer sleeve (8) can be filled dimensionally stable and yet flexible. When choosing the hot melt adhesive, it should be noted that it should be an insulator. Accordingly, they are
  • the attenuation should be at least 25 dB for use as a broadband cable sleeve.
  • the adhesive described in DE-A-3504804 is suitable as the hot-melt adhesive.
  • a hot melt adhesive from a mixture of A) 5 to 95% by weight of polyamide based on dimerized fatty acids, aliphatic amines and modifying additives on the one hand and B) 95 to 5% by weight of copolymers of ethylene and at least one of the following copolymers is therefore preferred : Inner anhydride of an ethylenically unsaturated dicarboxylic acid, propylene, (meth) acrylic acid esters and / or vinyl esters with up to 4 carbon atoms in the alcohol component.
  • the hot melt adhesive contains 20 to 60% by weight, based on the total weight of the hot melt adhesive, of further auxiliaries.
  • the hot melt adhesive preferably contains 25 to 50% by weight of auxiliaries, based on the total weight.
  • DE-A-3504804 is expressly made the content of the present application. This applies in particular to the starting materials and the production of the hot melt adhesives.
  • the plug connections according to the invention can essentially be produced as follows:
  • the stripped cable (see, for example, FIG. 1)) is connected to the contact sleeve (6) or the contact pin (for example by soldering or squeezing) and into the outer sleeve (8) pushed. Both are put on a counterpart, i.e. on a plug shape, if a sleeve is to be manufactured.
  • the resulting cavity is completely or partially filled with the melt of the hot melt adhesive under pressure. It can e.g. be injected into the cavity through an annular nozzle or an injection nozzle (injection molding). It is advantageous if the nozzle is initially located as far as possible in the outer sleeve and is pressed outwards with increasing filling.
  • the connector according to the invention even meets the high requirements of the broadband cable industry.
  • the plug connections are sealed up to an excess pressure of at least 0.3 at.
  • the connector sleeves and connector pins are located exactly at the desired location both during manufacture and during normal use, even without additional fixing aids, even with large plug connections.
  • an additional fixing washer at the beginning can be useful.
  • the high viscosity there are no harmful cavities.
  • the 15 m thick coaxial cable had a 1 mm thick protective sheath made of polyethylene, an outer conductor made of copper, a 3.5 mm thick insulator made of polyethylene and a 2 mm thick inner conductor made of copper. As was shown in FIG. 1, it was isolated. A silver-plated contact sleeve was placed on the inner conductor. An outer sleeve made of brass was screwed over the cable end. It was 83 mm long and 0.8 m thick. Their inner diameter was 20 mm.
  • the hot melt adhesive Macromelt R TPX 20-239 was used for casting. It is distributed by Henkel KGaA, Düsseldorf. Its main components are: 25% by weight PA, 32% by weight EVA and 43% by weight auxiliaries. It has a melt viscosity of 21,000 mPa-s at 210 ° C, 26,000 at 200, 38,000 at 190 and 125,000 at 160. The heat resistance was 70 ° C.
  • the cavity was cast with the hot melt adhesive described above in the following manner: Devices: Meltex application device, type MX 4012, dosing with the aid of a time control device, type ES 66,
  • Nozzle diameter 1.0 mm
  • the connector sleeve is pressure-tight up to at least 0.3 atm. During further processing, shrinkage up to at least 150 ° C. is possible, even in a horizontal position. The attenuation was 35 dB.

Landscapes

  • Adhesives Or Adhesive Processes (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

Un connecteur à fiches pour câbles électroconducteurs, notamment pour câbles coaxiaux, se caractérise par l'utilisation d'une colle de fusible ayant une viscosité de fusion supérieure à 8.000 mPa.s à 200 °C. La colle de fusible sert en même temps à connecter, à sceller, à remplir et à isoler. Ses principaux composants sont un polyamide à base d'acides gras dimérisés, des amines aliphatiques et des modificateurs, ainsi qu'un copolyéthylène et des additifs. On obtient ainsi des connecteurs qui satisfont à de hautes exigences électriques, thermiques et autres.A plug connector for electrically conductive cables, especially for coaxial cables, is characterized by the use of a fuse adhesive having a melting viscosity greater than 8,000 mPa.s at 200 ° C. Fuse glue is used for connecting, sealing, filling and insulating at the same time. Its main components are a polyamide based on dimerized fatty acids, aliphatic amines and modifiers, as well as a copolyethylene and additives. Connectors are thus obtained which meet high electrical, thermal and other requirements.

Description

"Steckverbindung für elektrisch leitende Kabel""Plug connection for electrically conductive cables"
Die Erfindung betrifft eine Steckverbindung für elektrisch leitende Kabel sowie deren Herstellung.The invention relates to a connector for electrically conductive cables and their manufacture.
Derartige Steckverbindungen sind bekannt. So wird in der tech¬ nischen Informationsschrift "MacromeltR Hotmelt" der Firma Henkel KGaA, veröffentlicht im März 1990, eine wasserdichte Steckverbin¬ dung mit MacromeltR-Schmelzklebstoffen beschrieben. Sie genügt im besonderen Maße den hohen Anforderungen der Automobilindustrie: Anders als in klimatisierten Räumen herrschen im Auto und hier insbesondere im Motorraum für elektronische Bauteile extreme Be¬ dingungen. Hitze, Frost, Staub, Öl und insbesondere Spritzwasser sind die Faktoren, die auf die elektronischen Bauteile und deren Verbindungselemente einwirken. Um ein störungsfreies Arbeiten der Autoelektronik zu gewährleisten, ist ein optimaler Schutz der be¬ treffenden Teile unerläßlich. Besonders das Eindringen von Feuch¬ tigkeit in die betreffenden Steckverbindungen und Kabelbäume wurde durch die Verwendung von MacromeltR gelöst. Damit wurde nicht nur eine 100%ige Abdichtung gegen Feuchtigkeit erhalten, sondern auch eine hohe Wärmestandfestigkeit von mehr als 90 bis mehr als 150 °C, je nach Materialtyp, ein exzellentes Tieftemperaturverhalten von mehr als -30 °C und schließlich eine sehr gute Haftung auf unter¬ schiedlichen Steckergehäusen. Es wird die Herstellung eines wasserfesten Steckers aus dem Schmelzklebstoff MacromeltR, einem Kabel mit Kontaktstiften und einer Steckerhülse mit Hilfe eines Holtmelt-Gerätes und eines Volumen-Dosierkopfes mit exakter Volumen-Dosierung durch Eingießen des Schmelzklebstoffs be¬ schrieben. Die genannten Schmelzklebstoffe haben eine Viskosität von 2500 bis 3200 mPa-s bei 210 °C.Such plug connections are known. For example, the technical information leaflet "Macromelt R Hotmelt" from Henkel KGaA, published in March 1990, describes a waterproof plug connection with Macromelt R hot melt adhesives. It particularly meets the high requirements of the automotive industry: in contrast to air-conditioned rooms, extreme conditions prevail in the car and here in particular in the engine compartment for electronic components. Heat, frost, dust, oil and especially splash water are the factors that affect the electronic components and their connecting elements. In order to ensure trouble-free operation of the car electronics, optimum protection of the parts in question is essential. In particular, the penetration of moisture into the relevant plug connections and cable harnesses was solved by using Macromelt R. Not only was a 100% moisture seal obtained, but also a high heat resistance of more than 90 to more than 150 ° C, depending on the material type, an excellent low temperature behavior of more than -30 ° C and finally very good adhesion on different connector housings. The production of a waterproof connector from the hot melt adhesive Macromelt R , a cable with contact pins and a connector sleeve using a Holtmelt device and a volume dosing head with exact volume dosing by pouring the hot melt adhesive is described. The hot melt adhesives mentioned have a viscosity of 2500 to 3200 mPa-s at 210 ° C.
Die Erfindung möchte Steckverbindungen für elektrisch leitende Ka¬ bel zur Verfügung stellen, die einfach herzustellen sind und den¬ noch sicher funktionieren trotz negativer Bedingungen wie Staub, Feuchtigkeit, Vibration und starke Temperaturunterschiede beim Ge¬ brauch und extreme Temperaturbeanspruchung bei der Weiterverarbeitung.The invention would like to provide plug connections for electrically conductive cables which are simple to manufacture and which still function reliably despite negative conditions such as dust, moisture, vibration and strong temperature differences during use and extreme temperature stress during further processing.
Die Lösung ist den Patentansprüchen zu entnehmen. Sie beruht im wesentlichen darauf, daß die Steckverbindung einen Schmelzklebstoff mit einer Viskosität von mehr als 8000 mPa*s bei 200 °C enthält. Vorzugsweise beträgt die Schmelzviskosität 12000 bis 60 000 mPa-s bei 200 °C, wenn sie unter Verwendung eines Brookfield-Thermocel- Viskosimeters vom Typ RVT mit der Spindel 27 gemessen wird. Die besten Ergebnisse werden mit einer Viskosität von 20000 bis 35000 mPa«s erhalten. Mit zunehmender Schmelzviskosität, vor allem ober¬ halb von 80000, wird der Hohlraum nicht mehr reproduzierbar aus¬ gefüllt und die Druckdichtigkeit ist nicht mehr gewährleistet.The solution can be found in the patent claims. It is essentially based on the fact that the plug connection contains a hot melt adhesive with a viscosity of more than 8000 mPa * s at 200 ° C. Preferably, the melt viscosity is 12,000 to 60,000 mPa-s at 200 ° C when measured using a RVT type Brookfield Thermocel viscometer with the spindle 27. The best results are obtained with a viscosity from 20,000 to 35,000 mPa «s received. With increasing melt viscosity, especially above 80,000, the cavity is no longer reproducibly filled and the pressure tightness is no longer guaranteed.
Unter Kabel wird eine gut isolierte und mit Schutzhüllen versehene elektrische Leitung verstanden. Zu seiner Verlängerung und seinem Anschluß an Geräte dienen Steckverbindungen, nämlich Stecker und Steckerhülsen oder Kupplungen. Der Stecker ist der mit Kontakt¬ stiften versehene Teil der Steckverbindung und die Steckerhülse oder Kupplung der mit den Kontakthülsen versehene Teil. Die Ver¬ bindung wird hergestellt, indem der Kontaktstift in die Kontakt¬ hülse geschoben wird.A cable is understood to mean a well-insulated electrical cable provided with protective sleeves. Plug connections, namely plugs and plug sleeves or couplings, are used to extend and connect them to devices. The plug is the part of the plug connection provided with contact pins and the plug sleeve or coupling the part provided with the contact sleeves. The connection is established by pushing the contact pin into the contact sleeve.
Die Erfindung eignet sich besonders dazu, Steckverbindungen für Koaxial-Kabel herzustellen, insbesondere für Breitbandkabelmuffen. Das Koaxial-Kabel besteht aus einem Innenleiter, z.B. aus Kupfer oder Aluminium, der durch Scheiben, Wände oder ein Isoliermaterial mit geringem dielektrischem Verlust wie z.B. Polystyrol oder Kera¬ mik genau zentrisch im Außenleiter, z.B. aus Kupfer, Aluminium, Messing usw. gehalten wird. Das Durchmesser-Verhältnis von Innen- : Außenleiter bestimmt maßgeblich den Wellenwiderstand, eine wichtige Kenngröße des Koaxial-Kabels. Die Verhältnisse innerhalb des Kabels sollten auch bei ihrer Verbindung erhalten bleiben, insbesondere die zentrische Anordnung. Dazu eignet sich die erfindungsgemäße Verwendung des Schmelzklebstoffs besonders, indem er den Raum zwi¬ schen dem Innenleiter und Außenleiter bzw. zwischen der Außenhülse und den Kontaktstiften bzw. Kontakthülsen vollständig ausfüllt. Gewünschtenfalls kann der Wellenwiderstand durch Formgebung oder Hohlräume des Schmelzklebstoffs definiert beeinflußt werden.The invention is particularly suitable for producing plug connections for coaxial cables, in particular for broadband cable sleeves. The coaxial cable consists of an inner conductor, e.g. made of copper or aluminum, which is penetrated by panes, walls or an insulating material with low dielectric loss, e.g. Polystyrene or ceramics exactly in the center of the outer conductor, e.g. made of copper, aluminum, brass, etc. The diameter ratio of inner: outer conductor largely determines the wave resistance, an important parameter of the coaxial cable. The conditions within the cable should also be preserved when they are connected, especially the central arrangement. For this purpose, the use of the hot-melt adhesive according to the invention is particularly suitable in that it completely fills the space between the inner conductor and outer conductor or between the outer sleeve and the contact pins or contact sleeves. If desired, the wave resistance can be influenced in a defined manner by the shape or cavities of the hot melt adhesive.
Eine bevorzugte Ausführungsform der Erfindung ist in Fig. 1 darge¬ stellt. Das Kabel (1) besteht aus einer Schutzhülle (2), einem Au¬ ßenleiter (3), einem Isolator (4) und einem Innenleiter (5). Die erfindungsgemäße Steckerhülse bzw. Kupplung enthält zur Verbindng mit dem Stecker eine Kontakthülse (6), die von dem Schmelzklebstoff (7) von der Außenhülse (8) isoliert und zentriert gehalten wird.A preferred embodiment of the invention is shown in FIG. 1. The cable (1) consists of a protective sheath (2), an outer conductor (3), an insulator (4) and an inner conductor (5). The connector sleeve or coupling according to the invention contains a contact sleeve (6) for connection to the connector, which is insulated from the outer sleeve (8) and kept centered by the hot melt adhesive (7).
Der Schmelzklebstoff für die erfindungsgemäße Steckverbindung hat nicht nur die typische Aufgabe eines Schmelzklebstoffs, nämlich nach dem Abkühlen aus der Schmelze zwei Fügeteile fest miteinander zu verbinden. Im vorliegenden Fall hat er auch die Aufgabe zu dichten, zu füllen und zu isolieren. So soll im vorliegenden Fall nicht nur das Kabel (1) mit der Steckverbindung festzusammengehal¬ ten werden, sondern darüber hinaus auch der Zugang von insbesondere Feuchtigkeit und Staub zwischen Kabel (1) und Außenhülse (8) sowie zwischen Kontakthülse (6) und dem isolierenden Schmelzkleber (7) verhindert werden und der Raum zwischen der Kontakthülse (6) bzw. dem -stift und der Außenhülse (8) formstabil und dennoch flexibel ausgefüllt werden. Bei der Auswahl des Schmelzklebstoffs ist zu beachten, daß er ein Isolator sein soll. Dementsprechend sind dieThe hot-melt adhesive for the plug connection according to the invention not only has the typical task of a hot-melt adhesive, namely to firmly connect two joining parts to one another after cooling from the melt. In the present case, he also has the task seal, fill and isolate. In the present case, not only should the cable (1) be held together with the plug connection, but also the access of moisture and dust in particular between the cable (1) and the outer sleeve (8) and between the contact sleeve (6) and the insulating one Hot melt adhesive (7) can be prevented and the space between the contact sleeve (6) or the pin and the outer sleeve (8) can be filled dimensionally stable and yet flexible. When choosing the hot melt adhesive, it should be noted that it should be an insulator. Accordingly, they are
Beiträge der einzelnen Mischungskomponenten zu der relativen Di¬ elektrizitätskonstante und zu den dieelektrischen Verlusten zu be¬ rücksichtigen, so daß insgesamt die gewünschten Werte erhalten werden. Für den Einsatz als Breitbandkabelmuffe sollte die Dämpfung mindestens 25 dB betragen.Contributions of the individual mixture components to the relative dielectric constant and to the electrical losses have to be taken into account, so that the desired values are obtained overall. The attenuation should be at least 25 dB for use as a broadband cable sleeve.
Als Schmelzklebstoff eignet sich der in der DE-A-3504804 be¬ schriebene Klebstoff. Bevorzugt wird also ein Schmelzklebstoff aus einem Gemisch aus A) 5 bis 95 Gew.-% Polyamid auf Basis von dimerisierten Fettsäuren, aliphatischen Aminen und modifizierenden Zusätzen einerseits sowie B) 95 bis 5 Gew.-% Copolymeren aus Ethylen und mindestens einem der folgenden Copolymeren: inneres Anhydrid einer ethylenisch ungesättigten Dicarbonsäure, Propylen, (Meth)-acrylsäureestern und/oder Vinylestern mit bis zu 4 C-Atomen in der Alkoholkomponente. Außerdem enthält der Schmelzklebstoff noch 20 bis 60 Gew.-% - bezogen auf das Gesamtgewicht des Schmelz¬ klebstoffs - an weiteren Hilfsstoffen.The adhesive described in DE-A-3504804 is suitable as the hot-melt adhesive. A hot melt adhesive from a mixture of A) 5 to 95% by weight of polyamide based on dimerized fatty acids, aliphatic amines and modifying additives on the one hand and B) 95 to 5% by weight of copolymers of ethylene and at least one of the following copolymers is therefore preferred : Inner anhydride of an ethylenically unsaturated dicarboxylic acid, propylene, (meth) acrylic acid esters and / or vinyl esters with up to 4 carbon atoms in the alcohol component. In addition, the hot melt adhesive contains 20 to 60% by weight, based on the total weight of the hot melt adhesive, of further auxiliaries.
Davon werden für die erfindungsgemäße Steckverbindung folgende Klebstoffe bevorzugt:The following adhesives are preferred for the plug connection according to the invention:
A) 10 bis 60 Gew.-% säureterminiertes PA,A) 10 to 60% by weight of acid-terminated PA,
B) 40 bis 90 Gew.-% eines Copolyethylens mit Vinylacetat, Methylacrylat oder Butylacrylat als Co onomeren. D^s Komponenten A) und B) ergänzen sich jeweils zu 100 %. Außerdem enthält der Schmelzklebstoff noch vorzugsweise 25 bis 50 Gew.-% an Hilfsstoffen, bezogen auf das Gesamtgewicht.B) 40 to 90 wt .-% of a copolyethylene with vinyl acetate, methyl acrylate or butyl acrylate as co onomers. The components A) and B) complement each other 100%. In addition, the hot melt adhesive preferably contains 25 to 50% by weight of auxiliaries, based on the total weight.
Der Inhalt der DE-A-3504804 wird ausdrücklich zum Inhalt der vorliegenden Anmeldung gemacht. Das gilt insbesondere für die Aus¬ gangsstoffe und die Herstellung der Schmelzklebstoffe.The content of DE-A-3504804 is expressly made the content of the present application. This applies in particular to the starting materials and the production of the hot melt adhesives.
Die erfindungsgemäßen Steckverbindungen können im wesentlichen folgendermaßen hergestellt werden: Das abisolierte Kabel (s. zum Beispiel Fig. 1) ) wird mit der Kontakthülse (6) bzw. dem Kontakt¬ stift verbunden (z.B. durch Löten oder Quetschen) und in die Au¬ ßenhülse (8) geschoben. Beides wird auf ein Gegenstück gesteckt, also auf eine Stecker-Form, wenn eine Hülse hergestellt werden soll. Der entstehende Hohlraum wird mit der Schmelze des Schmelz¬ klebstoffs unter Druck vollständig oder definiert teilweise ausge¬ füllt. Sie kann z.B. durch eine Ringdüse oder eine Injektionsdüse an den Hohlraum gespritzt werden (Spritzguß). Es ist vorteilhaft, wenn sich die Düse anfangs möglichst weit in der Außenhülse befin¬ det und mit zunehmender Füllung nach außen gedrückt wird.The plug connections according to the invention can essentially be produced as follows: The stripped cable (see, for example, FIG. 1)) is connected to the contact sleeve (6) or the contact pin (for example by soldering or squeezing) and into the outer sleeve (8) pushed. Both are put on a counterpart, i.e. on a plug shape, if a sleeve is to be manufactured. The resulting cavity is completely or partially filled with the melt of the hot melt adhesive under pressure. It can e.g. be injected into the cavity through an annular nozzle or an injection nozzle (injection molding). It is advantageous if the nozzle is initially located as far as possible in the outer sleeve and is pressed outwards with increasing filling.
Die erfindungsgemäße Steckverbindung genügt sogar den hohen Anfor¬ derungen der Breitbandkabel-Industrie. Insbesondere ist es möglich, einen Schrumpfschlauch oder einen Schrumpfartikel über die Steck¬ verbindung und das Kabel zu ziehen, und ihn horizontal durch Er¬ wärmung auf mehr als 150 °C schrumpfen zu lassen. Die Steckverbin¬ dungen sind bis zu einem Überdruck von mindestens 0,3 at dicht. Die Steckerhülsen und Steckerstifte befinden sich sowohl bei der Her¬ stellung als auch bei normaler Benutzung auch ohne zusätzliche Fixier-Hilfsmittel genau an der gewünschten Stelle, selbst bei großen Steckverbindungen. Wenn allerdings so wenig Schmelzklebstoff verwendet wird, daß die Steckerhülse bzw. die -stifte weit herausstehen, dann kann eine zusätzliche Fixierscheibe an ihrem Anfang nützlich sein. Trotz der hohen Viskosität gibt es keine schädlichen Hohlräume.The connector according to the invention even meets the high requirements of the broadband cable industry. In particular, it is possible to pull a shrink tube or a shrinking article over the plug connection and the cable, and to have it shrink horizontally by heating to more than 150 ° C. The plug connections are sealed up to an excess pressure of at least 0.3 at. The connector sleeves and connector pins are located exactly at the desired location both during manufacture and during normal use, even without additional fixing aids, even with large plug connections. However, if so little hot melt adhesive is used that the connector sleeve or pins are wide stick out, an additional fixing washer at the beginning can be useful. Despite the high viscosity, there are no harmful cavities.
Die Erfindung wird anhand folgenden Beispiels im einzelnen erläu¬ tert: The invention is explained in detail using the following example:
A Herstellung eines SteckersA Making a connector
Das insgesamt 15 m dicke Koaxial-Kabel hatte eine 1 mm dicke Schutzhülle aus Polyethylen, einen Außenleiter aus Kupfer, einen 3,5 mm dicken Isolator aus Polyethylen und einen 2 mm dicken In¬ nenleiter aus Kupfer. Es wurde - wie in Fig. 1 dargestellt - ab¬ isoliert. Auf den Innenleiter wurde eine versilberte Kontakthülse aufgesteckt. Über das Kabelende wurde eine Außenhülse aus Messing geschraubt. Sie hatte eine Länge von 83 mm und eine Dicke von 0,8 m. Ihr innerer Durchmesser betrug 20 mm.The 15 m thick coaxial cable had a 1 mm thick protective sheath made of polyethylene, an outer conductor made of copper, a 3.5 mm thick insulator made of polyethylene and a 2 mm thick inner conductor made of copper. As was shown in FIG. 1, it was isolated. A silver-plated contact sleeve was placed on the inner conductor. An outer sleeve made of brass was screwed over the cable end. It was 83 mm long and 0.8 m thick. Their inner diameter was 20 mm.
Zum Vergießen wurde der Schmelzklebstoff MacromeltR TPX 20-239 verwendet. Er wird von der Firma Henkel KGaA, Düsseldorf, ver¬ trieben. Seine Hauptkomponenten sind: 25 Gew.-% PA, 32 Gew.- EVA und 43 Gew.-% Hilfsstoffe. Er hat eine Schmelzviskosität von 21 000 mPa-s bei 210 °C, von 26000 bei 200, von 38000 bei 190 und von 125000 bei 160. Die Wärmestandfestigkeit betrug 70 °C.The hot melt adhesive Macromelt R TPX 20-239 was used for casting. It is distributed by Henkel KGaA, Düsseldorf. Its main components are: 25% by weight PA, 32% by weight EVA and 43% by weight auxiliaries. It has a melt viscosity of 21,000 mPa-s at 210 ° C, 26,000 at 200, 38,000 at 190 and 125,000 at 160. The heat resistance was 70 ° C.
Zur Bestimmung der Wärmestandfestigkeit werden in Anlehnung an die Henkel-Prüfmethode WPS 68 (s. Adhäsion (1969) Heft 1) zwei 25,0 mm breite Streifen aus flexiblem Karton überlappend (25,0 mm Überlap¬ pungslänge) verklebt. Die Verklebung wird mit 13,5 N (0,02 belastet und in einem Umlufttrockenschrank einem Temperaturanstieg von 5 °/10 min ausgesetzt. Als Wärmestandfestigkeit wird die Tem¬ peratur bezeichnet, bei der sich die Verklebung noch nicht löst.To determine the heat resistance, two 25.0 mm wide strips of flexible cardboard are overlapped (25.0 mm overlap length) using the Henkel test method WPS 68 (see Adhesion (1969) Issue 1). The bond is made with 13.5 N (0.02 loaded and exposed to a temperature rise of 5 ° / 10 min in a circulating air dryer. The heat resistance is the temperature at which the bond is not yet released.
Der Hohlraum wurde mit dem oben beschriebenen Schmelzklebstoff auf folgende Weise vergossen: Geräte: Meltex-Auftragsgerät, Typ MX 4012, Dosierung mit Hilfe eines Zeitsteuerungsgerätes vom Typ ES 66,The cavity was cast with the hot melt adhesive described above in the following manner: Devices: Meltex application device, type MX 4012, dosing with the aid of a time control device, type ES 66,
Zahnradpumpe mit einer Umdrehung von: 60 U/min,Gear pump with a rotation of: 60 rpm,
Düsendurchmesser: 1,0 mm,Nozzle diameter: 1.0 mm,
Temperatur: Vorschmelzbereich 190 °C,Temperature: pre-melting range 190 ° C,
Hauptschmelzbereich 210 °C,Main melting range 210 ° C,
Schläuche 220 °C,Hoses 220 ° C,
Köpfe 240 °C.Heads 240 ° C.
Druck am Auftragskopf bei geschlossenem Rücklaufventil: 60 bar, Druckabfall während des Vergießens: 10 bis 15 bar. Vergußmenge an Polyamid: 1,5 g, Vorwärmung der Messinghülse auf 140 bis 150 °C.Pressure at the application head with the return valve closed: 60 bar, pressure drop during casting: 10 to 15 bar. Pouring quantity of polyamide: 1.5 g, preheating the brass sleeve to 140 to 150 ° C.
B Eigenschaften der SteckerhülseB Properties of the connector sleeve
Die Steckerhülse ist druckdicht bis mindestens 0,3 atü. Bei der Weiterverarbeitung ist eine Schrumpfung bis mindestens 150 °C mög¬ lich, auch in horizontaler Lage. Die Dämpfung lag bei 35 dB.The connector sleeve is pressure-tight up to at least 0.3 atm. During further processing, shrinkage up to at least 150 ° C. is possible, even in a horizontal position. The attenuation was 35 dB.
Es ist überraschend, daß trotz der hohen Schmelzviskosität eine ausreichende Dichtigkeit erhalten wurde und daß trotz der niedrigen Wärmestandfestigkeit von weniger als 85 °C (im vorliegenden Fall 70 °C) eine Erwärmung der Schrumpfteile auf 150 °C und mehr in ho¬ rizontaler Lager möglich war. It is surprising that, despite the high melt viscosity, sufficient tightness was obtained and that, despite the low heat resistance of less than 85 ° C. (in the present case 70 ° C.), the shrink parts could be heated to 150 ° C. and more in horizontal storage was.

Claims

PatentansprücheClaims
1) Steckverbindung für elektrisch leitende Kabel, dadurch gekenn¬ zeichnet, daß sie einen Schmelzklebstoff mit einer Schmelzvis¬ kosität von mehr als 8000 mPa«s bei 200 °C enthält.1) Plug connection for electrically conductive cables, characterized gekenn¬ characterized in that it contains a hot melt adhesive with a melt viscosity of more than 8000 mPa « s at 200 ° C.
2) Steckverbindung nach Anspruch 1, dadurch gekennzeichnet, daß sie einen Schmelzklebstoff mit einer Schmelzviskosität von 12000 bis 60000 mPa-s bei 200 °C enthält.2) Plug connection according to claim 1, characterized in that it contains a hot melt adhesive with a melt viscosity of 12,000 to 60,000 mPa-s at 200 ° C.
3) Steckverbindung nach Anspruch 1 für elektrisch leitende Koaxi¬ al-Kabel.3) Connector according to claim 1 for electrically conductive coaxial cables.
4) Steckverbindung nach Anspruch 1, gekennzeichnet durch einen Schmelzklebstoff aus einem Gemisch eines Polyamids auf der Ba¬ sis von dimerisierter Fettsäure, aliphatischen Aminen und mo¬ difizierenden Zusätzen einerseits sowie eines Copolymeren aus4) Connector according to claim 1, characterized by a hot melt adhesive made from a mixture of a polyamide based on dimerized fatty acid, aliphatic amines and modifying additives on the one hand and a copolymer
Ethylen und mindestens einem der folgenden Comonomeren: inneres Anhydrid einer ethylenisch ungesättigten Dicarbonsäure, Propy- len, Methacrylsäureestern und/oder Vinylestern andererseits, wobei dem Gemisch 20 bis 60 Gew.-% - bezogen auf die Gesamtmi¬ schung - an weiteren Hilfsstoffen zugesetzt ist.Ethylene and at least one of the following comonomers: internal anhydride of an ethylenically unsaturated dicarboxylic acid, propylene, methacrylic acid esters and / or vinyl esters on the other hand, 20 to 60% by weight, based on the total mixture, of other auxiliaries being added to the mixture.
5) Steckverbindung nach mindestens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Schmelzklebstoff definierte Hohlräume enthält.5) Plug connection according to at least one of claims 1 to 4, characterized in that the hot melt adhesive contains defined cavities.
6) Verfahren zur Herstellung der Steckverbindung nach mindestens einem der Ansprüche 1 bis 5 durch Verguß des Schmelzkleb¬ stoffes. 7) Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß man a) den Innenleiter (5) des abisolierten Kabels (1) mit einer Kontakthülse (6) oder einem Kontaktstift verbindet, b) die Außenhülse (8) über das Kabelende schiebt, c) eine Ringdüse mit einer Führung für die Kontakthülse (6) oder den Kontaktstift in die Außenhülse (8) einschiebt, d) in den so entstehenden Hohlraum Schmelze eines Schmelzklebstoffs (7) drückt; e) die Ringdüse wieder entfernt und f) die Steckverbindung abkühlt. 6) Method for producing the plug connection according to at least one of claims 1 to 5 by casting the hot melt adhesive. 7) Method according to claim 5, characterized in that a) the inner conductor (5) of the stripped cable (1) is connected to a contact sleeve (6) or a contact pin, b) the outer sleeve (8) is pushed over the cable end, c) inserts an annular nozzle with a guide for the contact sleeve (6) or the contact pin into the outer sleeve (8), d) presses the melt of a hot melt adhesive (7) into the resulting cavity; e) the ring nozzle is removed again and f) the plug connection cools down.
EP92910583A 1991-05-28 1992-05-19 Plug-type connector for electroconductive cables Expired - Lifetime EP0586450B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4117395A DE4117395A1 (en) 1991-05-28 1991-05-28 CONNECTOR FOR ELECTRICALLY CONDUCTIVE CABLES
DE4117395 1991-05-28
PCT/EP1992/001096 WO1992022104A1 (en) 1991-05-28 1992-05-19 Plug-type connector for electroconductive cables

Publications (2)

Publication Number Publication Date
EP0586450A1 true EP0586450A1 (en) 1994-03-16
EP0586450B1 EP0586450B1 (en) 1995-11-29

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Country Status (8)

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US (1) US5510405A (en)
EP (1) EP0586450B1 (en)
JP (1) JPH06507751A (en)
KR (1) KR100271506B1 (en)
CA (1) CA2110294A1 (en)
DE (2) DE4117395A1 (en)
ES (1) ES2080503T3 (en)
WO (1) WO1992022104A1 (en)

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EP2292712A1 (en) 2009-09-02 2011-03-09 Rhein Chemie Rheinau GmbH Use of carbodiimides as colour stabiliser in melting adhesives
EP2292711A1 (en) 2009-09-02 2011-03-09 Rhein Chemie Rheinau GmbH Use of carbodiimides as colour stabiliser in melting adhesives

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DE102007020652A1 (en) 2007-04-30 2008-11-06 Henkel Ag & Co. Kgaa Shaped fixing device for bonding to metal or plastics substrates, e.g. in automobiles, is formed entirely from hot melt adhesive based on polyamide, polyolefin, polyester, polyacrylate or polystyrene
EP2292712A1 (en) 2009-09-02 2011-03-09 Rhein Chemie Rheinau GmbH Use of carbodiimides as colour stabiliser in melting adhesives
EP2292711A1 (en) 2009-09-02 2011-03-09 Rhein Chemie Rheinau GmbH Use of carbodiimides as colour stabiliser in melting adhesives

Also Published As

Publication number Publication date
CA2110294A1 (en) 1992-11-29
KR100271506B1 (en) 2000-11-15
EP0586450B1 (en) 1995-11-29
WO1992022104A1 (en) 1992-12-10
DE4117395A1 (en) 1992-12-03
US5510405A (en) 1996-04-23
JPH06507751A (en) 1994-09-01
DE59204516D1 (en) 1996-01-11
ES2080503T3 (en) 1996-02-01

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