EP2539964B1 - Electric connecting element - Google Patents

Electric connecting element Download PDF

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Publication number
EP2539964B1
EP2539964B1 EP20110761631 EP11761631A EP2539964B1 EP 2539964 B1 EP2539964 B1 EP 2539964B1 EP 20110761631 EP20110761631 EP 20110761631 EP 11761631 A EP11761631 A EP 11761631A EP 2539964 B1 EP2539964 B1 EP 2539964B1
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EP
European Patent Office
Prior art keywords
connecting element
electrical connecting
element according
electrical
soldering
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EP20110761631
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German (de)
French (fr)
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EP2539964A1 (en
Inventor
André Jenrich
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FEW Fahrzeugelektrikwerk GmbH and Co KG
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FEW Fahrzeugelektrikwerk GmbH and Co KG
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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
    • 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
    • H01R4/023—Soldered or welded connections between cables or wires and terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/12—End pieces terminating in an eye, hook, or fork
    • 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
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
    • H01R4/625—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
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/02—Connectors or connections adapted for particular applications for antennas
    • 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
    • H01R4/58—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 characterised by the form or material of the contacting members
    • 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
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors

Definitions

  • the invention relates to an electrical connection element for contacting a conductive structure located on a planar support by means of a thermally bonded connecting material, wherein on its side facing away from the conductive structure means for fixing a, preferably flexible, conductor are arranged according to claim 1.
  • the electrical connection comprises at least one essentially flat soldering pad to be soldered onto the pane and at least one crimping part, in particular crimp, which is in connection with the soldering pad by welding or soldering and which defines at least one electrical cable in the crimping connection.
  • connection between the soldering pad and the crimping part is designed in the form of at least one connecting part, wherein the connecting part is designed such that the crimping part can be bent back into the area of the soldering pad and / or beyond the area of the soldering pad.
  • the lead-free solder is based on a Sn in Ag solder alloy containing between 88 to 98.5% by weight Sn, between 1 to 10% by weight In, between 0.5 to 3.5% by weight Ag, between 0 to 1 wt .-% Cu and a doping with a crystallization modifier, in particular a maximum of 100 ppm neodymium.
  • This solder should have excellent compatibility with respect to the luting agents used and a high fatigue strength.
  • connection elements for a pane and environmentally friendly methods for producing such connection elements have already been proposed.
  • the disc has at least one electrical Connection element for vehicles with electrically conductive structures, such as heating or antenna conductor on.
  • the electrically conductive structures are contacted via soldered connection elements with the on-board electronics. Due to different thermal expansion coefficients of the materials used, non-negligible mechanical stresses occur during manufacture and subsequent operation, which can stress the disks and cause breakage of the disk or destruction of the contact.
  • solders have a high ductility, which is able to absorb or compensate for mechanical stresses between the electrical connection element and the disc.
  • the use of leaded solders, however, is problematic in terms of health and environmental aspects and is increasingly avoided.
  • connection element for contacting a surface-mounted conductive structure by means of a thermosubstantial connecting material, wherein the choice of the shape and the material of the connection element unavoidable forces due to different expansion coefficients reduced or the effects of the occurring forces are minimized.
  • the planar carrier is preferably a pane made of a safety glass, in particular for use in motor vehicle technology.
  • the conductive structure is an electrically conductive structure, e.g. a Schuleiteranowski which is realized by means of screen printing, or an antenna structure for operating an on-vehicle radio receiver or other electronic device, e.g. a navigation device.
  • the thermal bonding material is a lead-free solder which is located on the side of the electrical connection element which does not have a ferrule or a similar means for fixing a flexible conductor.
  • the connecting element according to the invention is designed as a soldering foot, which has one, at least approximate shape of the number eight or an approximate circular ring shape, with one or more interruptions.
  • the solder foot consists of two circular rings shaped into the number eight.
  • the means for fixing the preferably flexible conductor are located in the surface portion in which the circular rings mesh or touch. Here is enough contact material surface available.
  • the thermal bonding material is applied to one side of the terminal member and there occupies an area which is smaller than the annular surface.
  • the applied bonding material does not extend to the outer edge of the circular ring, but only up to a predetermined distance range.
  • a material-free ring may be present. This ring may also have at least one interruption.
  • the bonding material is located as Lötzinn Ronde on the connection element.
  • connection element consists of an iron-nickel or iron-chromium alloy or a mixture thereof.
  • the connecting element preferably consists of FeCr28, FeNi42, FeNi48 or FeNi52.
  • the bonding material comprises, at least as a constituent, the following alloys: Bi57Sn42Ag1, Bi57Sn40Ag3, SnAg3.8Cu0.7, Sn55Bi44Ag1 or Sn95.5Ag3Cu.0.
  • connection elements have an expansion coefficient which is very close to the expansion coefficient of car glass panes, namely about 9x10 -6 / K. Resulting stresses are distributed concentrically by the special shape of the soldering foot in the glass and absorbed by the glass material without the risk of destruction.
  • the Lötfuß has a circular ring with an inner diameter of 8mm and an outer diameter of 16mm with a material thickness of about 0.8mm.
  • the aforementioned eight-form of Lötfußes can also be modified to a double night, without leaving the theory of the invention.
  • the electrical connection element is made of a metallic alloy material, e.g. FeCr28, i. an iron-nickel or iron-chromium alloy.
  • the connecting element is designed as a soldering foot, which has an at least approximately circular shape.
  • soldering foot 1 with interlocking circular rings, which give the number eight.
  • wire end sleeve 2 On the upper side of the soldering foot 1 there is a wire end sleeve 2, which receives an electrical conductor 3, which has an insulation 4.
  • the Lötfuß 1 On the underside, the Lötfuß 1 a Lötzinn Ronde 5, which also has a circular ring shape.
  • the Lötzinn Ronde 5 does not reach to the outer edge of the Lötfuß-circular ring, but this has a distance in the Fig. 2 can be seen on.
  • the ferrule 2 as means for fixing the conductor 3 is located in a surface portion 6, in which the circular rings mesh or touch.
  • the attachment of the ferrule 2 on the Lötfuß 1 takes place, for example. by a welding or soldering process.
  • the fixing of the conductor 3 in the wire end sleeve 2 is realized by means of a crimping step.
  • the bonding material 5 is made of a lead-free solder-tin alloy, e.g. Bi57Sn42Ag1, Bi57Sn40Ag3, SnAg3.8Cu0.7, Sn55Bi44Ag1 or Sn95.5Ag3Cu0.5.
  • a lead-free solder-tin alloy e.g. Bi57Sn42Ag1, Bi57Sn40Ag3, SnAg3.8Cu0.7, Sn55Bi44Ag1 or Sn95.5Ag3Cu0.5.

Description

Die Erfindung betrifft ein elektrisches Anschlusselement zum Kontaktieren einer auf einem flächigen Träger befindlichen leitfähigen Struktur mittels eines thermisch-stoffschlüssigen Verbindungsmaterials, wobei auf seiner von der leitfähigen Struktur abgewandten Seite Mittel zum Fixieren eines, bevorzugt flexiblen, Leiters angeordnet sind, gemäß Anspruch 1.The invention relates to an electrical connection element for contacting a conductive structure located on a planar support by means of a thermally bonded connecting material, wherein on its side facing away from the conductive structure means for fixing a, preferably flexible, conductor are arranged according to claim 1.

Aus der DE 202 03 202 U1 ist ein elektrischer Anschluss, insbesondere Crimp- oder Quetschanschluss, für mindestens eine an einer Scheibe eines Fortbewegungsmittels, insbesondere eines Kraftfahrzeugs, anzuordnende elektrische Einrichtung, wie z.B. eine Antenne aufweisend, vorbekannt. Der elektrische Anschluss umfasst mindestens ein im Wesentlichen ebenes, auf die Scheibe aufzulötendes Lötpad und mindestens ein mit dem Lötpad durch Schweißen oder Löten in Verbindung stehendes, mindestens ein elektrisches Kabel im Quetschanschluss festlegendes Quetschteil, insbesondere Crimp.From the DE 202 03 202 U1 is an electrical connection, in particular crimp or crimp connection, for at least one on a disc of a means of transport, in particular a motor vehicle, to be arranged electrical device, such as having an antenna, previously known. The electrical connection comprises at least one essentially flat soldering pad to be soldered onto the pane and at least one crimping part, in particular crimp, which is in connection with the soldering pad by welding or soldering and which defines at least one electrical cable in the crimping connection.

Gemäß der dortigen Lösung ist die Verbindung zwischen dem Lötpad und dem Quetschteil in Form mindestens eines Verbindungsteils ausgebildet, wobei das Verbindungsteil so ausgestaltet wird, dass das Quetschteil in den Bereich des Lötpads und/oder über den Bereich des Lötpads hinaus zurückbiegbar ist.According to the local solution, the connection between the soldering pad and the crimping part is designed in the form of at least one connecting part, wherein the connecting part is designed such that the crimping part can be bent back into the area of the soldering pad and / or beyond the area of the soldering pad.

Hierdurch soll eine dauerhafte, stabile und zuverlässige Verbindung zwischen dem Lötpad und dem Quetschteil gewährleistet werden.This is to ensure a permanent, stable and reliable connection between the solder pad and the pinch.

Aus der DE 10 2006 047 764 A1 ist ein bleifreies Weichlot mit verbesserten Eigenschaften bei Temperaturen um > 150°C vorbekannt. Das bleifreie Weichlot basiert auf einerSn-In-Ag-Lotlegierung, enthaltend zwischen 88 bis 98,5 Gew.-% Sn, zwischen 1 bis 10 Gew.-% In, zwischen 0,5 bis 3,5 Gew.-% Ag, zwischen 0 bis 1 Gew.-% Cu und eine Dotierung mit einem Kristallisations-Modifier, insbesondere maximal 100 ppm Neodym. Dieses Lot soll eine ausgezeichnete Verträglichkeit hinsichtlich der eingesetzten Verbindungsmittel und eine hohe Dauerfestigkeit besitzen.From the DE 10 2006 047 764 A1 is a lead-free soft solder with improved properties at temperatures around> 150 ° C previously known. The lead-free solder is based on a Sn in Ag solder alloy containing between 88 to 98.5% by weight Sn, between 1 to 10% by weight In, between 0.5 to 3.5% by weight Ag, between 0 to 1 wt .-% Cu and a doping with a crystallization modifier, in particular a maximum of 100 ppm neodymium. This solder should have excellent compatibility with respect to the luting agents used and a high fatigue strength.

Darüber hinaus wurden bereits elektrische Anschlusselemente für eine Scheibe sowie umweltfreundliche Verfahren zur Herstellung derartiger Anschlusselemente vorgeschlagen. Die Scheibe weist hierbei mindestens ein elektrisches Anschlusselement für Fahrzeuge mit elektrisch leitfähigen Strukturen, beispielsweise Heizleiter oder Antennenleiter auf. Die elektrisch leitfähigen Strukturen werden über angelötete Anschlusselemente mit der Bordelektronik kontaktiert. Aufgrund unterschiedlicher thermischer Ausdehnungskoeffizienten der verwendeten Materialien treten nicht zu vernachlässigende mechanische Spannungen bei der Herstellung und dem späteren Betrieb auf, welche die Scheiben belasten und einen Bruch der Scheibe oder eine Zerstörung des Kontakts hervorrufen können.In addition, electrical connection elements for a pane and environmentally friendly methods for producing such connection elements have already been proposed. The disc has at least one electrical Connection element for vehicles with electrically conductive structures, such as heating or antenna conductor on. The electrically conductive structures are contacted via soldered connection elements with the on-board electronics. Due to different thermal expansion coefficients of the materials used, non-negligible mechanical stresses occur during manufacture and subsequent operation, which can stress the disks and cause breakage of the disk or destruction of the contact.

Bisher genutzte bleihaltige Lote weisen eine hohe Duktilität auf, die in der Lage ist, mechanische Spannungen zwischen elektrischem Anschlusselement und Scheibe aufzunehmen bzw. zu kompensieren. Der Einsatz bleihaltiger Lote ist jedoch unter gesundheitlichen und Umweltaspekten problematisch und wird zunehmend vermieden.Previously used lead-containing solders have a high ductility, which is able to absorb or compensate for mechanical stresses between the electrical connection element and the disc. The use of leaded solders, however, is problematic in terms of health and environmental aspects and is increasingly avoided.

Da bekannte bleifreie Lote die oben erwähnte Duktilität nicht oder nur eingeschränkt besitzen, gilt es, die bei der Herstellung und/oder dem späteren Betrieb auftretenden mechanischen Spannungen aufgrund unterschiedlicher Ausdehnungskoeffizienten von vornherein zu minimieren.Since known lead-free solders do not or only to a limited extent have the above-mentioned ductility, it is necessary to minimize the mechanical stresses occurring during production and / or later operation due to different coefficients of expansion.

Das Dokument US 6 267 630 offenbart ein elektrisches Anschlusselement gemäss dem Oberbergriff vom Anspruch 1.The document US 6,267,630 discloses an electrical connection element according to the Oberbergriff of claim 1.

Es ist daher Aufgabe der Erfindung, ein weiterentwickeltes elektrisches Anschlusselement zum Kontaktieren einer auf einem flächigen Träger befindlichen leitfähigen Struktur mittels eines thermisch-stoffschlüssigen Verbindungsmaterials anzugeben, wobei durch die Wahl der Form und des Materials des Anschlusselements nicht zu vermeidende Kräfte aufgrund unterschiedlicher Ausdehnungskoeffizienten reduziert bzw. die Auswirkungen der auftretenden Kräfte minimiert werden.It is therefore an object of the invention to provide a further developed electrical connection element for contacting a surface-mounted conductive structure by means of a thermosubstantial connecting material, wherein the choice of the shape and the material of the connection element unavoidable forces due to different expansion coefficients reduced or the effects of the occurring forces are minimized.

Die Lösung der Aufgabe der Erfindung erfolgt durch ein elektrisches Anschlusselement gemäß der Merkmalskombination nach Anspruch 1, wobei die Unteransprüche mindestens zweckmäßige Ausgestaltungen und Weiterbildungen umfassen.The object of the invention is achieved by an electrical connection element according to the feature combination according to claim 1, wherein the dependent claims comprise at least expedient refinements and developments.

Es wird demnach von einem elektrischen Anschlusselement zum Kontaktieren einer auf einem flächigen Träger befindlichen leitfähigen Struktur ausgegangen.It is therefore assumed that there is an electrical connection element for contacting a conductive structure located on a planar support.

Der flächige Träger ist bevorzugt eine Scheibe aus einem Sicherheitsglas, insbesondere zum Einsatz in der Kraftfahrzeugtechnik. Die leitfähige Struktur ist ein elektrisch leitfähiges Gebilde, z.B. eine Heizleiteranordnung, die mittels Siebdruck realisiert wird, oder aber eine Antennenstruktur zum Betrieb eines im Kraftfahrzeug befindlichen Rundfunkempfängers oder eines anderen elektronischen Geräts, z.B. eines Navigationsgeräts.The planar carrier is preferably a pane made of a safety glass, in particular for use in motor vehicle technology. The conductive structure is an electrically conductive structure, e.g. a Heizleiteranordnung which is realized by means of screen printing, or an antenna structure for operating an on-vehicle radio receiver or other electronic device, e.g. a navigation device.

Das thermisch-stoffschlüssige Verbindungsmaterial ist ein bleifreies Lot, welches auf der Seite des elektrischen Anschlusselements befindlich ist, welche keine Aderendhülse oder ein ähnliches Mittel zum Befestigen eines flexiblen Leiters besitzt.The thermal bonding material is a lead-free solder which is located on the side of the electrical connection element which does not have a ferrule or a similar means for fixing a flexible conductor.

Das erfindungsgemäße Anschlusselement ist als Lötfuß ausgebildet, welcher eine, mindestens angenäherte Form der Zahl Acht oder eine angenäherte Kreisringform, auch mit einer oder mehreren Unterbrechungen besitzt.The connecting element according to the invention is designed as a soldering foot, which has one, at least approximate shape of the number eight or an approximate circular ring shape, with one or more interruptions.

Bei einer Ausführungsform besteht der Lötfuß aus zwei, zu der Zahl Acht geformten Kreisringen.In one embodiment, the solder foot consists of two circular rings shaped into the number eight.

Die Mittel zum Fixieren des bevorzugt flexiblen Leiters sind in dem Flächenabschnitt befindlich, in dem die Kreisringe ineinandergreifen oder sich berühren. Hier steht genügend Kontaktmaterialfläche zur Verfügung.The means for fixing the preferably flexible conductor are located in the surface portion in which the circular rings mesh or touch. Here is enough contact material surface available.

Das thermisch-stoffschlüssige Verbindungsmaterial wird auf einer Seite des Anschlusselements aufgebracht und nimmt dort eine Fläche ein, die kleiner als die Kreisringfläche ist.The thermal bonding material is applied to one side of the terminal member and there occupies an area which is smaller than the annular surface.

Bevorzugt reicht das aufgebrachte Verbindungsmaterial nicht bis zum äußeren Kreisringrand, sondern nur bis zu einem vorgegebenen Abstandsbereich. Zusätzlich kann ein materialfreier Ring vorhanden sein. Auch dieser Ring kann mindestens eine Unterbrechung aufweisen.Preferably, the applied bonding material does not extend to the outer edge of the circular ring, but only up to a predetermined distance range. In addition, a material-free ring may be present. This ring may also have at least one interruption.

Wiederum bevorzugt ist das Verbindungsmaterial als Lötzinn-Ronde auf dem Anschlusselement befindlich.Again preferably, the bonding material is located as Lötzinn Ronde on the connection element.

Das Anschlusselement besteht aus einer Eisen-Nickel- oder Eisen-Chrom-Legierung oder einer Mischung hieraus.The connection element consists of an iron-nickel or iron-chromium alloy or a mixture thereof.

Bevorzugt besteht das Anschlusselement aus FeCr28, FeNi42, FeNi48 oder FeNi52.The connecting element preferably consists of FeCr28, FeNi42, FeNi48 or FeNi52.

Das Verbindungsmaterial weist, mindestens als Bestandteil, folgende Legierungen auf: Bi57Sn42Ag1, Bi57Sn40Ag3, SnAg3.8Cu0.7, Sn55Bi44Ag1 oder Sn95.5Ag3Cu.0.The bonding material comprises, at least as a constituent, the following alloys: Bi57Sn42Ag1, Bi57Sn40Ag3, SnAg3.8Cu0.7, Sn55Bi44Ag1 or Sn95.5Ag3Cu.0.

Die vorgeschlagenen Materialien für die Anschlusselemente besitzen einen Ausdehnungskoeffizienten, der sehr nahe an dem Ausdehnungskoeffizienten von Autoglasscheiben, nämlich ca. 9x10-6/K liegt. Entstehende Spannungen werden durch die besondere Form des Lötfußes im Glas konzentrisch verteilt und vom Glasmaterial aufgenommen, ohne dass die Gefahr der Zerstörung besteht.The proposed materials for the connection elements have an expansion coefficient which is very close to the expansion coefficient of car glass panes, namely about 9x10 -6 / K. Resulting stresses are distributed concentrically by the special shape of the soldering foot in the glass and absorbed by the glass material without the risk of destruction.

Bei einem Ausführungsbeispiel besitzt der Lötfuß einen Kreisring mit einem Innendurchmesser von 8mm und einen Außendurchmesser von 16mm bei einer Materialdicke von ca. 0,8mm. Die vorerwähnte Acht-Form des Lötfußes kann auch zu einer Doppelacht abgewandelt werden, ohne die Erfindungslehre zu verlassen.In one embodiment, the Lötfuß has a circular ring with an inner diameter of 8mm and an outer diameter of 16mm with a material thickness of about 0.8mm. The aforementioned eight-form of Lötfußes can also be modified to a double night, without leaving the theory of the invention.

Es hat sich überraschenderweise gezeigt, dass im Gegensatz zu einer vollflächigen Ausführung des Lötfußes bei der vorerwähnten Kreisring- oder kreisringähnlichen Gestaltung wesentlich geringere, Ausdehnungskoeffizientenbedingte Spannungen und Kräfte im Glasmaterial auftreten mit der Folge einer langzeitstabilen und qualitätssicheren elektrischen Verbindung bzw. Kontaktierung.It has surprisingly been found that, in contrast to a full-surface design of the Lötfußes at the aforementioned circular ring or annular design much lower, expansion coefficient induced stresses and forces in the glass material occur with the result of a long-term stable and quality-secure electrical connection or contact.

Die Erfindung soll nachstehend anhand eines Ausführungsbeispiels sowie unter Zuhilfenahme von Figuren näher erläutert werden.The invention will be explained below with reference to an embodiment and with the aid of figures.

Hierbei zeigen:

Fig. 1
eine perspektivische Draufsicht auf ein erfindungsgemäßes Anschlusselement mit über eine Aderendhülse angeschlossenem elektrischen Leiter und
Fig. 2
eine Darstellung ähnlich derjenigen nach Fig. 1, jedoch mit Blick auf die Unterseite des Anschlusselements und dort erkennbarer Lötzinn-Ronde.
Hereby show:
Fig. 1
a top perspective view of an inventive connecting element with a wire end sleeve connected electrical conductor and
Fig. 2
a representation similar to that after Fig. 1 , but with a view of the underside of the connection element and there recognizable Lötzinn-Ronde.

Wie in den Figuren dargestellt, besteht das elektrische Anschlusselement aus einem metallischen Legierungsmaterial, z.B. FeCr28, d.h. einer Eisen-Nickel- oder Eisen-Chrom-Legierung.As shown in the figures, the electrical connection element is made of a metallic alloy material, e.g. FeCr28, i. an iron-nickel or iron-chromium alloy.

Das Anschlusselement ist als Lötfuß ausgebildet, der eine, mindestens angenäherte Kreisringform aufweist.The connecting element is designed as a soldering foot, which has an at least approximately circular shape.

Bei den figürlichen Darstellungen wird von einem Lötfuß 1 mit ineinandergreifenden Kreisringen ausgegangen, die die Zahl Acht ergeben. Auf der Oberseite des Lötfußes 1 ist eine Aderendhülse 2 befindlich, die einen elektrischen Leiter 3 aufnimmt, welcher über eine Isolierung 4 verfügt.In the figurative representations it is assumed that a soldering foot 1 with interlocking circular rings, which give the number eight. On the upper side of the soldering foot 1 there is a wire end sleeve 2, which receives an electrical conductor 3, which has an insulation 4.

Unterseitig weist der Lötfuß 1 eine Lötzinn-Ronde 5 auf, die ebenfalls eine Kreisringform besitzt.On the underside, the Lötfuß 1 a Lötzinn Ronde 5, which also has a circular ring shape.

Die Lötzinn-Ronde 5 reicht jedoch nicht bis zur Außenkante des Lötfuß-Kreisrings, sondern weist hierzu einen Abstand, in der Fig. 2 ersichtlich, auf.However, the Lötzinn Ronde 5 does not reach to the outer edge of the Lötfuß-circular ring, but this has a distance in the Fig. 2 can be seen on.

Die Aderendhülse 2 als Mittel zum Fixieren des Leiters 3 ist in einem Flächenabschnitt 6 befindlich, in dem die Kreisringe ineinandergreifen oder sich berühren.The ferrule 2 as means for fixing the conductor 3 is located in a surface portion 6, in which the circular rings mesh or touch.

Die Befestigung der Aderendhülse 2 auf dem Lötfuß 1 erfolgt z.B. durch einen Schweiß- oder Lötvorgang.The attachment of the ferrule 2 on the Lötfuß 1 takes place, for example. by a welding or soldering process.

Das Fixieren des Leiters 3 in der Aderendhülse 2 wird mittels eines Crimpschritts realisiert.The fixing of the conductor 3 in the wire end sleeve 2 is realized by means of a crimping step.

Das Verbindungsmaterial 5 geht von einer bleifreien Lötzinn-Legierung, z.B. Bi57Sn42Ag1, Bi57Sn40Ag3, SnAg3.8Cu0.7, Sn55Bi44Ag1 oder Sn95.5Ag3Cu0.5 aus.The bonding material 5 is made of a lead-free solder-tin alloy, e.g. Bi57Sn42Ag1, Bi57Sn40Ag3, SnAg3.8Cu0.7, Sn55Bi44Ag1 or Sn95.5Ag3Cu0.5.

Maßgeblich bei der Ausgestaltung des elektrischen Anschlusselements ist darüber hinaus eine Mindestgröße der Freifläche 7, die vom jeweiligen Kreisring umschlossen wird.Decisive in the design of the electrical connection element is beyond a minimum size of the free surface 7, which is enclosed by the respective annulus.

Claims (9)

  1. An electrical connecting element for contacting a conductive structure arranged on a flat carrier by a thermally bonding connecting material, wherein devices for fixating an advantageously flexible conductor are arranged on a side of the electrical connecting element oriented away from the conductive structure,
    wherein the connecting element is configured as a soldering base (1) which has a simple circular shape or a lateral multiple circular ring shape, characterized in that
    the soldering base (1) is made from plural circular rings or circular ring segments that engage one another.
  2. The electrical connecting element according to claim 1,
    characterized in that
    the soldering base (1) is made from two circular rings formed into a number eight.
  3. The electrical connecting element according to claim 1 or 2,
    characterized in that
    the device for fixating the conductor (3) is arranged in the surface section (6) in which the circular rings engage one another or contact one another.
  4. The electrical connecting element according to one of the preceding claims,
    characterized in that the thermally bonded connecting element (5) is arranged on one side of the connecting element and covers a surface on the one side which is smaller than the circular ring surface.
  5. The electrical connecting element according to claim 4,
    characterized in that
    the connecting material is provided as a soldering tin bead.
  6. The electrical connecting element according to one of the preceding claims,
    characterized in that
    the connecting element is made from an iron-nickel or iron-chromium alloy or from a mix thereof.
  7. The electrical connecting element according to claim 6,
    characterized in that
    the electrical connecting element is made from FeCr28.
  8. The electrical connecting element according to claim 6,
    characterized in that
    the electrical connecting element is made from FeNi42, FeNi48, or FeNl52.
  9. The electrical connecting element according to claim 6,
    characterized in that
    the connecting material it is made from a lead free soldering tin, in particular B157SN42AG1, B157SN40AG3, SNAG3.8Cu0.7 or Sn55BI44AG1.
EP20110761631 2011-05-03 2011-09-28 Electric connecting element Active EP2539964B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202011100176 2011-05-03
DE202011100906U DE202011100906U1 (en) 2011-05-03 2011-05-19 Electrical connection element
PCT/EP2011/066916 WO2012149985A1 (en) 2011-05-03 2011-09-28 Electric connecting element

Publications (2)

Publication Number Publication Date
EP2539964A1 EP2539964A1 (en) 2013-01-02
EP2539964B1 true EP2539964B1 (en) 2015-05-06

Family

ID=44315775

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110761631 Active EP2539964B1 (en) 2011-05-03 2011-09-28 Electric connecting element

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Country Link
US (1) US9379458B2 (en)
EP (1) EP2539964B1 (en)
JP (1) JP5730440B2 (en)
CN (1) CN103477498B (en)
DE (1) DE202011100906U1 (en)
ES (1) ES2544441T3 (en)
HU (1) HUE026932T2 (en)
WO (1) WO2012149985A1 (en)
ZA (1) ZA201307180B (en)

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MX2013013016A (en) 2011-05-10 2014-01-31 Saint Gobain Pane having an electrical connection element.
DK2708091T4 (en) 2011-05-10 2021-09-13 Saint Gobain Window with an electrical connection element.
DE202012003926U1 (en) 2012-02-24 2012-05-04 Few Fahrzeugelektrikwerk Gmbh & Co. Kg Arrangement for the technologically optimized execution of solder joints
DE102012007804B4 (en) 2012-02-24 2022-06-02 Few Fahrzeugelektrikwerk Gmbh & Co. Kg Process for the technologically optimized execution of lead-free solder connections
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Also Published As

Publication number Publication date
CN103477498B (en) 2017-06-09
DE202011100906U1 (en) 2011-06-09
JP5730440B2 (en) 2015-06-10
HUE026932T2 (en) 2016-07-28
US9379458B2 (en) 2016-06-28
ES2544441T3 (en) 2015-08-31
JP2014514724A (en) 2014-06-19
WO2012149985A1 (en) 2012-11-08
US20120305311A1 (en) 2012-12-06
EP2539964A1 (en) 2013-01-02
ZA201307180B (en) 2014-12-23
CN103477498A (en) 2013-12-25

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