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EP3014706B1 - Electrical connection arrangement - Google Patents

Electrical connection arrangement Download PDF

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Publication number
EP3014706B1
EP3014706B1 EP14731609.5A EP14731609A EP3014706B1 EP 3014706 B1 EP3014706 B1 EP 3014706B1 EP 14731609 A EP14731609 A EP 14731609A EP 3014706 B1 EP3014706 B1 EP 3014706B1
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EP
European Patent Office
Prior art keywords
electrical connection
glue
electrical
connection arrangement
foil
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.)
Active
Application number
EP14731609.5A
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German (de)
French (fr)
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EP3014706A1 (en
Inventor
Roy Gleisberg
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.)
FEW Fahrzeugelektrikwerk GmbH and Co KG
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FEW Fahrzeugelektrikwerk GmbH and Co KG
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Publication of EP3014706A1 publication Critical patent/EP3014706A1/en
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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
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/63—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures connecting to another shape cable
    • 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
    • H01R4/02—Soldered or welded connections
    • 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
    • H01R4/70—Insulation of connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles
    • 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
    • H01R4/02—Soldered or welded connections
    • H01R4/021—Soldered or welded connections between two or more cables or wires
    • 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

Definitions

  • the invention relates to an electrical connection arrangement between at least one planar conductor or conductor section and a cable, wherein the planar conductor or conductor section leads to a pane, in particular a composite pane and electrical or electronic components located there, and the cable is part of an external electrical connection, wherein further the planar Conductor or conductor portion on a carrier film, in particular polyimide film, is formed, and with an encapsulation as a plastic encapsulation at least in the region of the electrical contact point of cable and planar conductor or conductor section, according to the preamble of claim 1.
  • Line connections include, for example, a transition from a ribbon conductor to an electrical cable.
  • Such line connections are used, for example, in composite panes, which are used in motor vehicles.
  • Composite disks consist of two rigid glass panes and an adhesive film or adhesive layer adhesively bonding them.
  • electrical components e.g. be introduced in the form of antenna conductors, heating conductors or the like. To connect these electrical components, the above-mentioned wiring connections are necessary.
  • flat cables can be used, which consist of a carrier foil with a metallic coating.
  • Such a two-layered or multi-layered laminate is sufficiently thin to be able to be inserted into the composite interspace.
  • Such flat cables are usually connected to the external connection side with the actual electrical connection cable, in particular soldered.
  • the junction is now protected from moisture or other climatic influences, so that safe operation of the connected electrical components can be done.
  • EP 1 619 759 B1 the possibility to cover only one in relation to the total width of the flat conductor small area with a permanently elastic insulating or envelop.
  • a permanently elastic insulating or envelop After the application of this preferably transparent insulating in a first stage of the process, an adequate seal against the ingress of liquid or moisture should be created, which excludes the occurrence of short circuits and corrosion damage.
  • the protective body is made by molding or overmolding the bonding area and the previously applied insulating compound with a suitable plastic compound.
  • the insulating material is completely embedded in the final state within the protective body, so that the risk of leakage is minimized.
  • the outer contour of the insulating material thus forms a common body or interface with the overlying protective body.
  • the applied insulating and sealing compound with permanently elastic properties presents as a pre-potting, which is necessary to seal the joint solder joint.
  • This pre-mold forms with the film-laminate arrangement better networking and can provide the desired protection of the solder joint even in climatic alternating loads. But since the pre-potting is not suitable for use at higher temperatures, it must still be encapsulated with a Endverguss, so that the actual protective body is formed.
  • connection arrangement and a related manufacturing method, which is suitable for electrically contacting a planar conductor or conductor section and a cable, wherein the planar conductor or conductor section to a disc, in particular Composite disc and located there electrical or electronic components leads.
  • the created connection arrangement is intended to withstand all thermal and mechanical stresses occurring during the following working and processing steps, and in later use, e.g. ensure a trouble-free contact connection in a motor vehicle, regardless of thermal and / or climatic influences according to the particular conditions of use of the motor vehicle.
  • the cable is part of an external electrical connection and leads e.g. to a socket, a plug connection or other electrical or electronic components.
  • planar conductor or conductor section is according to the prior art on a carrier film, in particular a polyimide film, and may have a further, covering layer, which prior to establishing the electrical connection, e.g. by soldering, is exposed accordingly.
  • the electrical connection arrangement comprises an encapsulation, designed as a plastic encapsulation, at least in the region of the electrical contact point of the cable and the planar conductor or conductor section. It is within the meaning of the invention that the plastic extrusion can also have a greater spatial extent and moreover has means for fastening.
  • an adhesion-promoting, heat-activatable adhesive film is initially applied in the region of the carrier film in the area of the carrier film, leaving the space for the actual electrical contacting point, but surrounding or delimiting it, for the realization of the electrical connection arrangement.
  • the known per se, preferably unique plastic extrusion is realized to form a protective body.
  • the temperature and pressure effect necessary for the plastic extrusion simultaneously activates the adhesive film, resulting in a high-density and stable connection of the abovementioned components.
  • Vorvergusses surrounding the contact point in terms of an elastic or permanently elastic mass, which also has insulating properties, can be omitted according to the invention.
  • the adhesive film is formed as an adhesive film.
  • the adhesive or the adhesive film can be easily self-adhesive and hardens as mentioned above under heat and pressure.
  • the adhesive film can consist of an adhesive-impregnated and / or coated nonwoven material.
  • the adhesive film may be laminated on at least one side with a so-called liner, i. be provided a peelable cover.
  • This liner can then at the same time serve as a quasi-solder mask, since the liner as well as the adhesive film according to the above explanations, the contact point itself leaves free, but these laterally, i. surrounds laterally.
  • the heat activation and curing temperature of the adhesive film is adapted to the processing temperature of the plastic extrusion compound.
  • the pressure ratios set for the formation of the encapsulation correspond at least to the required contact pressure for the adhesive film.
  • the laminated planar conductor or conductor section 4 has an end 2 facing the disk (not shown) and a contacting end 3 (FIG. Fig. 1 ).
  • the adhesive film 6 is applied in a surface area, which substantially corresponds to the formation of the later plastic extrusion 7.
  • the electrical contacting point 4 is left free from the adhesive film 6, but laterally surrounds the contacting point 4.
  • the adhesive film 6 can also demarcate the contacting point 4 only to one side.
  • solder connection 8 is carried out in the region of the contacting point 4, so that the cable 5 is electrically connected to the corresponding section 4 ( Fig. 3 ).
  • an encapsulation of the connection arrangement is carried out by means of plastic encapsulation 7, wherein the pressure and temperature entry for the realization of the plastic encapsulation simultaneously activates the adhesive film of the adhesive film, so that a high-density and durable connection is formed.
  • the plastic extrusion 7 may still have recesses 9 for fastening ( Fig. 4 ).
  • the adhesive film used is, for example, a film with a double-sided adhesive, heat-activatable adhesive film, wherein the adhesive is already slightly self-adhesive and cures under heat and pressure.
  • a protective cover may for example consist of a paper layer which is siliconized.
  • Curing temperatures of such an adhesive film are in the range of 230 ° C at a contact pressure of 34 N / cm 2 and a curing time of about 2 minutes. These values correspond to the processing temperature of the preferably used plastic injection molding compound.
  • acrylate adhesives can be used for the adhesive layer, but also special adhesion promoters with regard to crosslinking of polyimide film and encapsulation layer.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Adhesive Tapes (AREA)

Description

Die Erfindung betrifft eine elektrische Verbindungsanordnung zwischen mindestens einem flächigen Leiter oder Leiterabschnitt und einem Kabel, wobei der flächige Leiter oder Leiterabschnitt zu einer Scheibe, insbesondere Verbundscheibe und dort befindlichen elektrischen oder elektronischen Bauteilen führt und das Kabel Bestandteil eines elektrischen Außenanschlusses ist, wobei weiterhin der flächige Leiter oder Leiterabschnitt auf einer Trägerfolie, insbesondere Polyimidfolie, ausgebildet ist, sowie mit einer Verkapselung als Kunststoffumspritzung mindestens im Bereich der elektrischen Kontaktierungsstelle von Kabel und flächigem Leiter oder Leiterabschnitt, gemäß Oberbegriff des Anspruchs 1.The invention relates to an electrical connection arrangement between at least one planar conductor or conductor section and a cable, wherein the planar conductor or conductor section leads to a pane, in particular a composite pane and electrical or electronic components located there, and the cable is part of an external electrical connection, wherein further the planar Conductor or conductor portion on a carrier film, in particular polyimide film, is formed, and with an encapsulation as a plastic encapsulation at least in the region of the electrical contact point of cable and planar conductor or conductor section, according to the preamble of claim 1.

Elektrische Leitungsverbindungen gemäß den Merkmalen des Oberbegriffs des Anspruchs 1 gehören zum Stand der Technik. Derartige Leitungsverbindungen umfassen beispielsweise einen Übergang von einem Flachbandleiter zu einem elektrischen Kabel. Solche Leitungsverbindungen kommen beispielsweise bei Verbundscheiben zum Einsatz, die in Kraftfahrzeugen genutzt werden. Verbundscheiben bestehen aus zwei starren Glasscheiben und eine diese adhäsiv verbindende Klebefolie oder Kleberschicht. In solche Verbundscheiben können elektrische Bauelemente, z.B. in Form von Antennenleitern, Heizleitern oder dergleichen eingebracht sein. Zum Anschluss dieser elektrischen Bauelemente sind die vorstehend erwähnten Leitungsverbindungen notwendig.Electrical line connections according to the features of the preamble of claim 1 belong to the prior art. Such line connections include, for example, a transition from a ribbon conductor to an electrical cable. Such line connections are used, for example, in composite panes, which are used in motor vehicles. Composite disks consist of two rigid glass panes and an adhesive film or adhesive layer adhesively bonding them. In such composite disks, electrical components, e.g. be introduced in the form of antenna conductors, heating conductors or the like. To connect these electrical components, the above-mentioned wiring connections are necessary.

Bezüglich der Verbindung des Innenraums des Scheibenverbunds mit dem Außenraum können Flachleitungen eingesetzt werden, die aus einer Trägerfolie mit metallischer Beschichtung bestehen. Ein solches zwei- oder mehrlagiges Laminat ist ausreichend dünn, um in den Verbundzwischenraum eingefügt werden zu können.With regard to the connection of the interior of the laminated pane to the outer space, flat cables can be used, which consist of a carrier foil with a metallic coating. Such a two-layered or multi-layered laminate is sufficiently thin to be able to be inserted into the composite interspace.

Derartige Flachleitungen werden üblicherweise außenanschlussseitig mit dem eigentlichen elektrischen Anschlusskabel verbunden, insbesondere verlötet.Such flat cables are usually connected to the external connection side with the actual electrical connection cable, in particular soldered.

Die Verbindungsstelle gilt es nunmehr vor Feuchtigkeit oder sonstigen klimatischen Einflüssen zu schützen, so dass ein sicherer Betrieb der angeschlossenen elektrischen Bauelemente erfolgen kann.The junction is now protected from moisture or other climatic influences, so that safe operation of the connected electrical components can be done.

Diesbezüglich ist aus der EP 1 619 759 B1 eine elektrische Leitungsverbindung mit Querschnittsübergang sowie ein Verfahren zur Herstellung einer solchen Verbindung vorbekannt.In this regard is from the EP 1 619 759 B1 an electrical line connection with cross-sectional transition and a method for producing such a compound previously known.

Gemäß der Lehre nach EP 1 619 759 B1 wurde festgestellt, dass übliche Kunststoff-Schutzkörper auch bei unterschiedlicher Ausbildung in Form und Material keine ausreichende Sicherung der Verbindungsstelle bei der Lötung ermöglichen. Aus diesem Grund wurde dazu übergegangen, die eigentliche elektrische Lötverbindung mit einer weicheren Isolier- und Dichtmasse zu umgeben. Auch dies führte zu Problemen, insbesondere bei höheren Temperaturbelastungen.According to the teaching EP 1 619 759 B1 It was found that conventional plastic protective body even with different training in shape and material do not allow sufficient assurance of the joint during soldering. For this reason, it was decided to surround the actual electrical solder joint with a softer insulating and sealing compound. This too led to problems, especially at higher temperature loads.

Weiterhin zeigt die Lehre nach EP 1 619 759 B1 die Möglichkeit auf, nur einen im Verhältnis zur Gesamtbreite des Flachleiters kleinen Bereich mit einer dauerelastischen Isoliermasse abzudecken oder zu umhüllen. Nach dem Aufbringen dieser vorzugsweise durchsichtigen Isoliermasse in einer ersten Verfahrensstufe soll eine ausreichende Abdichtung gegen das Eindringen von Flüssigkeit oder Nässe geschaffen sein, die das Auftreten von Kurzschlüssen und Korrosionsschäden ausschließt. Trotzdem war es erforderlich, aufgrund der mechanischen und thermischen Beanspruchungen während der weiteren Verarbeitung und auch bezüglich der Montage einer entsprechenden Scheibe mit Anschlusselementen in eine Fahrzeugkarosserie den Schutzkörper auszubilden, da die Isoliermasse allein nicht oder nur wenig mechanisch und thermisch belastbar ist.Furthermore, the teaching shows EP 1 619 759 B1 the possibility to cover only one in relation to the total width of the flat conductor small area with a permanently elastic insulating or envelop. After the application of this preferably transparent insulating in a first stage of the process, an adequate seal against the ingress of liquid or moisture should be created, which excludes the occurrence of short circuits and corrosion damage. Nevertheless, it was necessary to form the protective body due to the mechanical and thermal stresses during further processing and also with respect to the installation of a corresponding disc with connecting elements in a vehicle body, since the insulating material alone or only slightly mechanical and thermal loadable.

Diesbezüglich wird der Schutzkörper in einer zweiten Stufe des Verfahrens durch An- oder Umspritzen des Verbindungsbereichs und der zuvor aufgebrachten Isoliermasse mit einer geeigneten Kunststoffmasse hergestellt. Damit ist die Isoliermasse im Endzustand innerhalb des Schutzkörpers vollständig eingebettet, so dass das Risiko einer Undichtigkeit minimiert ist. Die Außenkontur der Isoliermasse bildet somit eine gemeinsame Körper- oder Grenzfläche mit dem darüber befindlichen Schutzkörper.In this regard, in a second stage of the process, the protective body is made by molding or overmolding the bonding area and the previously applied insulating compound with a suitable plastic compound. Thus, the insulating material is completely embedded in the final state within the protective body, so that the risk of leakage is minimized. The outer contour of the insulating material thus forms a common body or interface with the overlying protective body.

Mit anderen Worten stellt sich die aufzubringende Isolier- und Dichtmasse mit dauerelastischen Eigenschaften als ein Vorverguss dar, der notwendig ist, um die Verbindungs-Lötstelle abzudichten. Dieser Vorverguss bildet mit der Folien-Laminat-Anordnung eine bessere Vernetzung und kann auch bei klimatischen Wechselbelastungen für den gewünschten Schutz der Lötstelle sorgen. Da aber der Vorverguss nicht für den Einsatz bei höheren Temperaturen geeignet ist, muss dieser noch mit einem Endverguss umspritzt werden, so dass der eigentliche Schutzkörper entsteht.In other words, the applied insulating and sealing compound with permanently elastic properties presents as a pre-potting, which is necessary to seal the joint solder joint. This pre-mold forms with the film-laminate arrangement better networking and can provide the desired protection of the solder joint even in climatic alternating loads. But since the pre-potting is not suitable for use at higher temperatures, it must still be encapsulated with a Endverguss, so that the actual protective body is formed.

Es ist für den Fachmann ohne weiteres ersichtlich, dass das Ausbilden eines Vorvergusses zur Ausbildung einer dauerelastischen Isolier- und Dichtschicht mit anschließendem zweiten Verguss zum Erhalt des Schutzkörpers sowohl von den Materialkosten als auch herstellungsseitig höhere Aufwendungen nach sich zieht, die es nach Möglichkeit zu vermeiden gilt.It is readily apparent to those skilled in the art that the formation of a Vorvergusses to form a permanently elastic insulating and sealing layer with subsequent second potting for obtaining the protective body both from the material costs and manufacturing side higher expenses entails that it should be avoided if possible ,

Aus dem Vorgenannten ist es daher Aufgabe der Erfindung, eine weiterentwickelte elektrische Verbindungsanordnung und ein diesbezügliches Herstellungsverfahren anzugeben, welche(s) geeignet ist, einen flächigen Leiter oder Leiterabschnitt und ein Kabel elektrisch zu kontaktieren, wobei der flächige Leiter oder Leiterabschnitt zu einer Scheibe, insbesondere Verbundscheibe und dort befindlichen elektrischen oder elektronischen Bauteilen führt. Die geschaffene Verbindungsanordnung soll allen bei folgenden Be- und Verarbeitungsschritten auftretenden thermischen und mechanischen Belastungen standhalten und beim späteren Einsatz, z.B. in einem Kraftfahrzeug eine störungsfreie Kontaktverbindung gewährleisten, und zwar unabhängig von thermischen und/oder klimatischen Einflüssen entsprechend den jeweiligen Einsatzbedingungen des Kraftfahrzeugs.From the foregoing, it is therefore an object of the invention to provide a further developed electrical connection arrangement and a related manufacturing method, which is suitable for electrically contacting a planar conductor or conductor section and a cable, wherein the planar conductor or conductor section to a disc, in particular Composite disc and located there electrical or electronic components leads. The created connection arrangement is intended to withstand all thermal and mechanical stresses occurring during the following working and processing steps, and in later use, e.g. ensure a trouble-free contact connection in a motor vehicle, regardless of thermal and / or climatic influences according to the particular conditions of use of the motor vehicle.

Die Lösung der Aufgabe der Erfindung erfolgt durch eine elektrische Verbindungsanordnung gemäß der Merkmalskombination nach Anspruch 1, wobei die Unteransprüche mindestens zweckmäßige Ausgestaltungen und Weiterbildungen darstellen. Erfindungsgemäß ist darüber hinaus eine sich aus Anspruch 1 ergebende Technologie zur Herstellung einer diesbezüglichen Verbindungsanordnung.The object of the invention is achieved by an electrical connection arrangement according to the feature combination according to claim 1, wherein the dependent claims represent at least expedient refinements and developments. According to the invention, moreover, a resulting from claim 1 technology for producing a related connection arrangement.

Es wird demnach von einer elektrischen Verbindungsanordnung zwischen mindestens einem flächigen Leiter oder Leiterabschnitt und einem Kabel ausgegangen, wobei der flächige Leiter oder Leiterabschnitt zu einer Scheibe, insbesondere einer Verbundscheibe und dort befindlichen elektrischen oder elektronischen Bauteilen führt.It is therefore of an electrical connection arrangement between at least one planar conductor or conductor section and a cable assumed that the flat conductor or conductor section leads to a disc, in particular a composite disc and located there electrical or electronic components.

Das Kabel ist Bestandteil eines elektrischen Außenanschlusses und führt z.B. zu einer Steckbuchse, einem Steckanschluss oder sonstigen elektrischen oder elektronischen Baugruppen.The cable is part of an external electrical connection and leads e.g. to a socket, a plug connection or other electrical or electronic components.

Der flächige Leiter oder Leiterabschnitt befindet sich gemäß dem Stand der Technik auf einer Trägerfolie, insbesondere einer Polyimidfolie, und kann über eine weitere, abdeckende Schicht verfügen, die vor dem Herstellen der elektrischen Verbindung, z.B. durch Löten, entsprechend freigelegt wird.The planar conductor or conductor section is according to the prior art on a carrier film, in particular a polyimide film, and may have a further, covering layer, which prior to establishing the electrical connection, e.g. by soldering, is exposed accordingly.

Darüber hinaus umfasst die elektrische Verbindungsanordnung eine Verkapselung, ausgebildet als Kunststoffumspritzung, und zwar mindestens im Bereich der elektrischen Kontaktierungsstelle von Kabel und flächigem Leiter oder Leiterabschnitt. Es liegt im Sinne der Erfindung, dass die Kunststoffumspritzung auch eine größere räumliche Ausdehnung aufweisen kann und darüber hinaus Mittel zum Befestigen besitzt.In addition, the electrical connection arrangement comprises an encapsulation, designed as a plastic encapsulation, at least in the region of the electrical contact point of the cable and the planar conductor or conductor section. It is within the meaning of the invention that the plastic extrusion can also have a greater spatial extent and moreover has means for fastening.

Erfindungsgemäß wird für die Realisierung der elektrischen Verbindungsanordnung zunächst im Bereich der Trägerfolie unter Freilassen des Raumes für die eigentliche elektrische Kontaktierungsstelle, diese jedoch umgebend oder flächig abgrenzend, ein haftvermittelnder, hitzeaktivierbarer Klebstofffilm aufgebracht.According to the invention, an adhesion-promoting, heat-activatable adhesive film is initially applied in the region of the carrier film in the area of the carrier film, leaving the space for the actual electrical contacting point, but surrounding or delimiting it, for the realization of the electrical connection arrangement.

Nach dem Ausführen der elektrischen Verbindung an der Kontaktierungsstelle, z.B. durch Lötung, wird die an sich bekannte, bevorzugt einmalige Kunststoffumspritzung zur Ausbildung eines Schutzkörpers realisiert. Erfindungsgemäß aktiviert die bei der Kunststoffumspritzung notwendige Temperatur- und Druckeinwirkung gleichzeitig den Klebstofffilm, so dass sich eine hochdichte und beständige Verbindung der vorerwähnten Komponenten ergibt.After performing the electrical connection at the contacting site, e.g. by soldering, the known per se, preferably unique plastic extrusion is realized to form a protective body. According to the invention, the temperature and pressure effect necessary for the plastic extrusion simultaneously activates the adhesive film, resulting in a high-density and stable connection of the abovementioned components.

Das Ausbilden eines die Kontaktierungsstelle umgebenden Vorvergusses im Sinne einer elastischen oder dauerelastischen Masse, die gleichzeitig isolierende Eigenschaften aufweist, kann erfindungsgemäß entfallen.The formation of a Vorvergusses surrounding the contact point in terms of an elastic or permanently elastic mass, which also has insulating properties, can be omitted according to the invention.

Durch die Abstimmung der Bedingungen bezüglich der Aushärtungstemperatur und der Druckverhältnisse hinsichtlich des Klebstofffilms auf die entsprechenden Maßnahmen für die Kunststoffumspritzung vereinfacht sich die technologische Abfolge und es kann mit bisher bekannten, zum Einsatz kommenden Gerätschaften gearbeitet werden.By matching the conditions with respect to the curing temperature and the pressure conditions with respect to the adhesive film on the appropriate measures for plastic extrusion, the technological sequence is simplified and it can be used with previously known, used for equipment equipment.

Bei einer bevorzugten Ausführungsform ist der Klebstofffilm als Klebefolie ausbildet. Der Klebstoff bzw. die Klebstofffolie kann hier leicht selbstklebend sein und härtet wie vorerwähnt unter Hitze und Druck aus. In einer besonderen Ausführungsform kann die Klebstofffolie aus einem mit Klebstoff getränkten und/oder beschichteten Vliesmaterial bestehen. Darüber hinaus kann die Klebstofffolie mindestens einseitig mit einem sogenannten Liner, d.h. einer abziehbaren Abdeckung versehen sein.In a preferred embodiment, the adhesive film is formed as an adhesive film. The adhesive or the adhesive film can be easily self-adhesive and hardens as mentioned above under heat and pressure. In a particular embodiment, the adhesive film can consist of an adhesive-impregnated and / or coated nonwoven material. In addition, the adhesive film may be laminated on at least one side with a so-called liner, i. be provided a peelable cover.

Dieser Liner kann dann gleichzeitig quasi als Lötstoppmaske dienen, da der Liner wie auch der Klebstofffilm gemäß obiger Erläuterungen die Kontaktierungsstelle selbst frei lässt, diese jedoch seitlich, d.h. lateral umgibt.This liner can then at the same time serve as a quasi-solder mask, since the liner as well as the adhesive film according to the above explanations, the contact point itself leaves free, but these laterally, i. surrounds laterally.

Erfindungsgemäß ist also die Hitzeaktivierung und Aushärtetemperatur des Klebstofffilms an die Verarbeitungstemperatur der Kunststoffumspritzungsmasse angepasst.According to the invention, therefore, the heat activation and curing temperature of the adhesive film is adapted to the processing temperature of the plastic extrusion compound.

Weiterhin entsprechen die für die Ausbildung der Umspritzung eingestellten Druckverhältnisse mindestens dem erforderlichen Anpressdruck für den Klebstofffilm.Furthermore, the pressure ratios set for the formation of the encapsulation correspond at least to the required contact pressure for the adhesive film.

Mittels des Einsatzes des Klebstofffilms stellt sich eine sichere Vernetzung zwischen der Trägerfolie und der Umspritzung ein, ohne dass eine Vorvergussschicht oder eine dauerelastische Isolier- oder Dichtmasse erforderlich werden, was einen wesentlichen Vorteil im Vergleich zum Stand der Technik darstellt.By means of the use of the adhesive film, a secure cross-linking between the carrier film and the encapsulation is established, without the need for a precoat layer or a permanently elastic insulating or sealing compound, which represents a significant advantage compared to the prior art.

Die Erfindung soll nachstehend anhand eines Ausführungsbeispiels sowie unter Zuhilfenahme der Fig. 1 bis 4 dargestellt werden, welche den prinzipiellen technologischen Prozess der Herstellung der elektrischen Verbindung und Ausbildung der erforderlichen Abdichtung illustrieren.The invention will be described below with reference to an embodiment and with the aid of Fig. 1 to 4 which illustrate the basic technological process of making the electrical connection and forming the required seal.

Ausgehend von der Trägerfolie 1 weist der laminierte flächige Leiter oder Leiterabschnitt 4 ein zur Scheibe (nicht gezeigt) weisendes Ende 2 sowie ein Kontaktierungsende 3 auf (Fig. 1).Starting from the carrier film 1, the laminated planar conductor or conductor section 4 has an end 2 facing the disk (not shown) and a contacting end 3 (FIG. Fig. 1 ).

Im Bereich des Kontaktierungsendes 3 ist ein Leiterabschnitt freigelegt, der die Kontaktstelle 4 zum Anschluss eines Kabels 5 bildet.In the region of the contacting end 3, a conductor section is exposed, which forms the contact point 4 for connecting a cable 5.

In der folgenden Darstellung nach Fig. 2, die dem nächsten technologischen Schritt entspricht, wird die Klebefolie 6 in einem Flächenbereich aufgebracht, der im Wesentlichen der Ausbildung der späteren Kunststoffumspritzung 7 entspricht.In the following illustration Fig. 2 , which corresponds to the next technological step, the adhesive film 6 is applied in a surface area, which substantially corresponds to the formation of the later plastic extrusion 7.

Es ist aus der Fig. 2 ersichtlich, dass die elektrische Kontaktierungsstelle 4 von der Klebefolie 6 frei gelassen ist, jedoch die Kontaktierungsstelle 4 lateral umgibt. Alternativ kann die Klebefolie 6 die Kontaktierungsstelle 4 auch lediglich zu einer Seite flächig abgrenzen.It is from the Fig. 2 It can be seen that the electrical contacting point 4 is left free from the adhesive film 6, but laterally surrounds the contacting point 4. Alternatively, the adhesive film 6 can also demarcate the contacting point 4 only to one side.

Nachdem die Klebefolie aufgebracht wurde, wird eine Lötverbindung 8 im Bereich der Kontaktierungsstelle 4 ausgeführt, so dass das Kabel 5 mit dem entsprechenden Abschnitt 4 elektrisch verbunden ist (Fig. 3).After the adhesive film has been applied, a solder connection 8 is carried out in the region of the contacting point 4, so that the cable 5 is electrically connected to the corresponding section 4 ( Fig. 3 ).

Nächstfolgend erfolgt ein Abziehen des Liners, der sich noch auf der Klebefolie 6 befindet.Next follows a peeling off of the liner, which is still on the adhesive film 6.

Im Anschluss wird ein Umspritzen der Verbindungsanordnung mittels Kunststoffumspritzung 7 vorgenommen, wobei der Druck- und Temperatureintrag für das Realisieren der Kunststoffumspritzung gleichzeitig den Klebstofffilm der Klebefolie aktiviert, so dass eine hochdichte und beständige Verbindung entsteht. Die Kunststoffumspritzung 7 kann noch Ausnehmungen 9 zum Befestigen aufweisen (Fig. 4).Subsequently, an encapsulation of the connection arrangement is carried out by means of plastic encapsulation 7, wherein the pressure and temperature entry for the realization of the plastic encapsulation simultaneously activates the adhesive film of the adhesive film, so that a high-density and durable connection is formed. The plastic extrusion 7 may still have recesses 9 for fastening ( Fig. 4 ).

Bei der eingesetzten Klebefolie handelt es sich beispielsweise um eine Folie mit einem doppelseitig klebenden, hitzeaktivierbaren Klebstofffilm, wobei der Klebstoff bereits leicht selbstklebend ist und unter Hitze und Druck aushärtet.The adhesive film used is, for example, a film with a double-sided adhesive, heat-activatable adhesive film, wherein the adhesive is already slightly self-adhesive and cures under heat and pressure.

Eine Schutzabdeckung, vorstehend als Liner bezeichnet, kann z.B. aus einer Papierschicht, die silikonisiert ist, bestehen. Härtetemperaturen eines derartigen Klebstofffilm, z.B. des Produkts 3M 582, liegen im Bereich um 230° C bei einem Anpressdruck von 34 N/cm2 und einer Härtezeit von ca. 2 Minuten. Diese Werte entsprechen der Verarbeitungstemperatur der vorzugsweise einzusetzenden Kunststoffspritzmasse. Alternativ können Acrylatkleber für die Kleberschicht, aber auch spezielle Haftvermittler hinsichtlich Vernetzung Polimidfolie und Umspritzungsschicht zum Einsatz kommen.A protective cover, referred to above as a liner, may for example consist of a paper layer which is siliconized. Curing temperatures of such an adhesive film, such as the product 3M 582, are in the range of 230 ° C at a contact pressure of 34 N / cm 2 and a curing time of about 2 minutes. These values correspond to the processing temperature of the preferably used plastic injection molding compound. Alternatively, acrylate adhesives can be used for the adhesive layer, but also special adhesion promoters with regard to crosslinking of polyimide film and encapsulation layer.

Claims (7)

  1. An electrical connection arrangement between a flat conductor or conductor section and a cable (5), wherein the flat conductor or conductor section leads to a window pane, in particular a laminate window pane and electrical or electronic components arranged at the window pane and the cable (5) is part of an electrical external connection, wherein the flat conductor or conductor section is configured on a carrier foil (1), in particular a polyimide foil and configured with a plastic encapsulation (7) encased about the flat conductor by injection molding at least in a portion of an electrical contact location (4) of the cable (5) and the flat conductor or conductor section, characterized in that an adhesion enhancing heat activatable glue film (6) is applied in the portion of the carrier foil (1) but does not cover a space of the electrical contact location (4) but envelops the electrical contact location (4) or forms an area border around the electrical contact location (4), wherein the encasement by injection molding (7) is performed after the electrical connection at the contact location is provided and pressure and the temperature introduction simultaneously activate the glue film (6) so that a very tight and durable connection is provided.
  2. The electrical connection arrangement according to claim 1,
    characterized in that the flue film is provided as a glue foil.
  3. The electrical connection arrangement according to claim 2,
    characterized in that
    the glue foil has self-adhesive properties.
  4. The electrical connection arrangement according to claim 2 or 3,
    characterized in that the glue foil is made from a glue infused and/or glue coated fleece material.
  5. The electrical connection arrangement according to one of the preceding claims,
    characterized in that
    a heat activation and curing temperature of the glue film is adapted to a processing temperature of the plastic encasement compound.
  6. The electrical connection arrangement according to one of the preceding claims,
    characterized in that
    pressure conditions used for forming the encasement provide at least a contact pressure for the glue foil.
  7. The electrical connection arrangement according to one of the preceding claims,
    characterized in that
    the glue foil (6) provides a safe connection of the carrier foil (1) with the encasement (7) without requiring an initial encasement layer or a permanently elastic insulation and sealing compound.
EP14731609.5A 2013-06-24 2014-06-17 Electrical connection arrangement Active EP3014706B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202013005678 2013-06-24
DE202013008144U DE202013008144U1 (en) 2013-06-24 2013-09-13 Electrical connection arrangement
PCT/EP2014/062698 WO2014206813A1 (en) 2013-06-24 2014-06-17 Electrical connection arrangement

Publications (2)

Publication Number Publication Date
EP3014706A1 EP3014706A1 (en) 2016-05-04
EP3014706B1 true EP3014706B1 (en) 2017-11-08

Family

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Application Number Title Priority Date Filing Date
EP14731609.5A Active EP3014706B1 (en) 2013-06-24 2014-06-17 Electrical connection arrangement

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Country Link
US (1) US9531093B2 (en)
EP (1) EP3014706B1 (en)
CN (1) CN105409062B (en)
DE (1) DE202013008144U1 (en)
WO (1) WO2014206813A1 (en)

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DE102021204051A1 (en) 2021-04-23 2022-10-27 Zf Friedrichshafen Ag Device with an antenna arrangement and vehicle
GB2619024A (en) * 2022-05-23 2023-11-29 Strip Tinning Ltd Electrical connection

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Also Published As

Publication number Publication date
US20160141777A1 (en) 2016-05-19
WO2014206813A1 (en) 2014-12-31
DE202013008144U1 (en) 2013-09-26
CN105409062B (en) 2018-02-27
EP3014706A1 (en) 2016-05-04
US9531093B2 (en) 2016-12-27
CN105409062A (en) 2016-03-16

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