EP2880717B1 - Press-fit contact - Google Patents

Press-fit contact Download PDF

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Publication number
EP2880717B1
EP2880717B1 EP13744478.2A EP13744478A EP2880717B1 EP 2880717 B1 EP2880717 B1 EP 2880717B1 EP 13744478 A EP13744478 A EP 13744478A EP 2880717 B1 EP2880717 B1 EP 2880717B1
Authority
EP
European Patent Office
Prior art keywords
press
pin
circuit carrier
deflection
zone
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
EP13744478.2A
Other languages
German (de)
French (fr)
Other versions
EP2880717A1 (en
Inventor
Michael Guyenot
Friedhelm Guenter
Sabrina RATHGEBER
Marc Fischer
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
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Publication of EP2880717A1 publication Critical patent/EP2880717A1/en
Application granted granted Critical
Publication of EP2880717B1 publication Critical patent/EP2880717B1/en
Active legal-status Critical Current
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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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • 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
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
    • H01R12/585—Terminals having a press fit or a compliant portion and a shank passing through a hole in the printed circuit board
    • 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
    • H01R13/02—Contact members
    • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
    • Y10T29/4913—Assembling to base an electrical component, e.g., capacitor, etc.
    • Y10T29/49139—Assembling to base an electrical component, e.g., capacitor, etc. by inserting component lead or terminal into base aperture

Definitions

  • DE 10 2009 042 385 A1 relates to a connector device for electrically connecting a conductor to a circuit board by directly plugging the connector device into a contact hole of the circuit board in a contact opening of the circuit board.
  • the plug device has a fastening area and a transmission area for transmitting a current from the conductor to the printed circuit board.
  • the transmission area or the entire plug device can be made of aluminum. Automotive applications are mentioned as the intended use for the plug device, for example high mechanical loads and high currents being transmitted.
  • the connection can be a press-fit connection or a press-in connection, which is used or clamped in a bus bar for printed circuits or a printed circuit board and is electrically connected to a circuit board.
  • electricity is transferred from a battery or electrical signals are transmitted without a solder joint.
  • the connector is made of a conductive material, such as an aluminum alloy, and is formed by stamping and pressing the conductive material.
  • the connection provides the electrical energy for the bus bar of a circuit in an electrical connector box, for example a junction box or a fuse box, and controls electronic elements, such as a fuse or a relay.
  • the bus bar can be provided in an electrical connection box, which is arranged in a machine room or under a vehicle interior.
  • DE 10 2009 008 118 A1 discloses a method for producing an electrical contact on a printed circuit board, the contact via a non-positive connection between a press-in pin, which has a press-in zone and a contact area and a metallized printed circuit board opening is produced.
  • the entire press-in pin or only the press-in zone can be coated with aluminum.
  • the disclosure DE102006031839 A1 shows a contact element in which flat parts made of different materials are integrally connected.
  • the disclosure DE4242837 A1 discloses the pressing in of a press-in pin or a press-in spring into a printed circuit board by means of a press-in tool in the form of a sonotrode, by means of which the force is introduced during the press-in process by applying vibrations to the press-in pin or the press-in spring.
  • the resilient pin contains a press-fit area with elasticity, which is secured in a press fit within a through opening in a printed circuit board due to an elastic deformation of the press-fit area against being pulled out.
  • a press-in pin for a circuit carrier and its production method are proposed.
  • the circuit carrier has at least one press-fit zone can be contacted on the conductor tracks.
  • a press-in pin other than the press-in pin proposed according to the invention can be made of solid aluminum material or can also be designed as a press-in pin made of solid aluminum material, which is provided with a coating, in particular a roll-clad copper-clad coating.
  • the solid aluminum material can be coated with a galvanic coating. This galvanic coating can be NiAu or Sn, for example.
  • the press-in pin contains aluminum material sections.
  • it is manufactured as a "sandwich" component and comprises, in sequential order, for example a resilient area made of copper material, which is pressed into the corresponding press-in zone in the circuit carrier.
  • This first section of the press-in pin is followed by an aluminum section, within which a deflection zone of the press-in pin lies.
  • a deflection zone means such a zone of the press-in pin, within which the press-in pin experiences, for example, a 90 ° deflection and changes from a vertical course to a horizontal course, for example.
  • the deflection of the press-in pin can also assume other angular profiles, depending on requirements and application.
  • a line section which is made of Cu or a Cu alloy, can in turn be connected to this AI section which realizes the deflection of the press-in pin.
  • the press-in pin represents a hybrid component.
  • a press-in pin not proposed according to the invention, it can be made of solid Al material.
  • a Cu cladding coating can then be applied to the outer surface of this Al material.
  • This Cu cladding coating is preferably applied by roll cladding.
  • a press-in pin is obtained, the mechanical properties of which can essentially be characterized by the Al material.
  • the resilient region that is to say the press-in region of the press-in pin into the circuit carrier, is formed by two cheeks which are separated from one another by an opening are separated. Due to the elasticity of the cheeks, these can be mounted, for example by means of ultrasound support, in the corresponding press-in zones of the circuit carrier, so that oxides can be better separated from the aluminum material.
  • the solution proposed according to the invention is characterized in particular by the fact that, by using aluminum instead of copper or copper alloys, the aluminum material has a lower modulus of elasticity and thus a lower one Has stiffness as Cu. With the same geometry, better values with regard to the modulus of elasticity and the stiffness are obtained compared to copper material. This in turn means that thermomechanically induced voltages due to temperature changes can be better reduced.
  • the press-in pin proposed according to the invention can still be produced from strip-like material, which has the advantage that tools or proven manufacturing processes do not have to be changed. In order to reliably remove oxides, the press-in pin proposed according to the invention in its three design variants outlined above with ultrasound support can be installed in the corresponding press-in zones of the circuit carrier.
  • electrical contacting or a plug connection may require a surface that is resistant to friction corrosion.
  • a surface can be achieved, for example, in terms of production engineering in that the complete belts, i.e. the raw material or partially already punched-in press-in pins can be refined by means of a galvanically applied coating.
  • the galvanic coating can be, for example, NiAu, Sn, NiPdAu and the like.
  • the robustness or the durability of an electrical connection made by cold contacting can be considerably improved by a plug connection between the periphery, component and a circuit carrier.
  • the embodiment variants according to the present invention can be used to replace or expand an existing press-in pin portfolio in electronic controls.
  • the solution proposed according to the invention can be used as a media-resistant press-in technique, e.g. required for use in vehicle transmissions, use can be made, a cost advantage can be achieved by using aluminum instead of copper.
  • the hybrid shape of the press-in pins enables an optimum relationship to be achieved between the mechanically required stability on the one hand and the electrical conductivity required for the application.
  • Figure 1 shows a circuit carrier 10, wherein conductor tracks 30 are embedded in the carrier substrate of the circuit carrier 10.
  • the conductor tracks 30 running within the circuit carrier 10 are connected to contact surfaces 32.
  • the contact surfaces 32 in turn are surrounded by contact surfaces 28, which complement a press-in opening 12 in the circuit carrier 10.
  • the press-in opening 12 extends continuously through the circuit carrier 10 from its top to its bottom.
  • the press-in opening 12 represents a press-in zone 14, in which a press-in pin 16 is pressed.
  • the press-in pin 16 as shown in Figure 1 it is one which is made entirely of aluminum material 36.
  • the continuous press-in pin 16 made of solid aluminum material is pressed into the press-in zone 14 of the circuit carrier 10 with the aid of ultrasound.
  • the ultrasound support can reliably remove oxides from the aluminum material 36 of the continuous press-in pin 34.
  • the press-in of the press-in pin 16 according to the first Design variant takes place using cold contacting technology.
  • the press-in pin has a 90 ° deflection 18. This is how Figure 1 can be seen, formed from solid aluminum material 36 of the press-in pin 16. At the end of the press-in pin 16, which projects into the press-in opening 12 of the press-in zone 14, the press-in pin 16 has a resilient region 20.
  • the resilient region 20 is defined in the aluminum material 36 by a first cheek 22 and a second cheek 24. Between the cheeks 22 and 24 there is an opening 26.
  • the two cheeks 22 and 24 have elastic properties and contact the contact surfaces 32 after assembly of the press-in pin 16 in the press-in opening 12 Figure 1
  • the press-in pin shown made of solid aluminum material 36 can have a complete or partial electroplating coating. Suitable surfaces are, for example, NiAu and Sn.
  • Figure 2 shows an embodiment variant of the press-in pin proposed according to the invention, which is designed as a hybrid or sandwich component.
  • this press-in pin 16 is one which has a Cu spring area 38, which is followed by a deflection area 40 made of solid aluminum material, which in turn merges into a Cu line section 42.
  • the geometry of the press-in pin as shown in Figure 2 The embodiment variant of the solution proposed according to the invention is identical to the geometry of the press-in pin 16 as shown in FIG Figure 1 , which is made of solid aluminum 36.
  • the deflection 18 according to the embodiment variant of the press-in pin 16 also lies in the aluminum section 40 of the press-in pin 16.
  • the circuit carrier 10 according to the embodiment variant Figure 2 is analogous to the circuit carrier 10 according to Figure 1 built up.
  • Embedded conductor tracks 30 run in the carrier substrate of the circuit carrier 10 and are connected to contact surfaces 32 which are enclosed by contact surfaces 28.
  • the contact surfaces 28 limit the press-in opening 12 which lies within the press-in zone 14 of the circuit carrier 10.
  • Analogous to the representation according to Figure 1 the press-in opening 12 extends completely through the circuit carrier 10, ie from the top to the bottom thereof.
  • the Cu spring area 38 is not made of aluminum but of copper.
  • the aluminum deflection area 40 as shown in FIG Figure 2 has the advantage that in the area of the deflection 18 there is a lower modulus of elasticity and thus a lower rigidity with the same geometry compared to copper material. Thereby, thermomechanically induced voltages due to temperature changes can also be configured in the configuration of the press-in pin 16 according to the second embodiment Figure 2 be broken down better.
  • Figure 3 shows a further press-in pins not proposed according to the invention made of solid aluminum material with a roll-clad coating.
  • the press-in pin 16 shown there is also essentially made of Al base material 36, but is provided over its entire surface with a jacket coating 48, which can be roll-plated, for example, from copper.
  • the mechanical properties of the press-in pin 16 according to the in Figure 3 reproduced embodiment variants are essentially defined by the aluminum material 36, 46.
  • the geometry of the press-in pin 16 is essentially identical to the geometries of the press-in pin 16 according to the embodiment variants described above Figure 1 and 2 .
  • a resilient area 20 of the press-in pin 16 is formed, which is provided in the area of the opening 26 on the inside and on the outside of the first cheek 22 and the second cheek 24 with a jacket coating 48, for example made of copper.
  • the circuit carrier 10 according to Figure 3 comprises individual conductor tracks 30 embedded in the interior thereof, which are electrically connected to contact surfaces 32, which in turn are surrounded by contact surfaces 28, which delimit the press-in opening 12 of the press-in zone 14 in the circuit carrier 10.
  • press-in pins 16 are mounted with ultrasound support in the press-in opening 12 of the press-in zone 14. Through the use of ultrasound otherwise, when the press-fit pins 16 are cold-installed, oxides remaining on the aluminum material can be reliably removed.
  • press-in pins 16 All design variants of the press-in pins 16 according to the Figures 1 to 3 has in common that the production of the press-in pins 16 can take place as before from band-shaped material. This offers the advantage that tools and a proven manufacturing process can be kept unchanged.
  • a plug-in connection requires a friction-corrosion-resistant surface
  • the above-mentioned band-shaped material or press-in pins that have already been partially punched out can be refined by means of a galvanically applied coating.
  • friction corrosion-resistant surfaces are, for example, NiAu, Sn, NiPdAu, to name a few.
  • connection point can be one that represents a plug connection between a periphery and a component on the one hand and on the other hand with the circuit carrier 10.
  • the solution proposed according to the invention can advantageously be used to supplement an existing press-in pin portfolio in electronic controls.
  • the solution proposed according to the invention can be used in particular in the context of a press-in technology designed to be media-resistant, as is required, for example, when used in transmission controls of vehicles.
  • the substitute material aluminum replaces the copper previously used, which means that material costs can be saved to a not inconsiderable extent, since aluminum is a cheaper basic material compared to copper.
  • the solution proposed according to the invention can be used to dampen or reduce thermomechanically induced loads, so that an electrical plug connection which is produced by means of cold contacting technology is considerably improved in terms of its durability. It would also be conceivable to implement further layer sequences, ie a layer composite of Cu, Al, Cu and Al. Instead of Cu and Al, other material combinations would also be conceivable in the present context for the production of hybrid press-in pins, for example Ni, Cu and Au.

Description

Stand der TechnikState of the art

DE 10 2009 042 385 A1 bezieht sich auf eine Steckervorrichtung zum elektrischen Verbinden eines Leiters mit einer Leiterplatte mittels direktem Einsteckens der Steckvorrichtung in ein Kontaktloch der Leiterplatte in eine Kontaktöffnung der Leiterplatte. Hierzu weist die Steckervorrichtung einen Befestigungsbereich auf und einen Übertragungsbereich zum Übertragen eines Stromes von dem Leiter auf die Leiterplatte. Der Übertragungsbereich oder die gesamte Steckervorrichtung kann aus Aluminium hergestellt sein. Als Einsatzzweck für die Steckervorrichtung werden Automobilanwendungen genannt, wobei beispielsweise hohe mechanische Belastungen vorliegen und starke Ströme übertragen werden. DE 10 2009 042 385 A1 relates to a connector device for electrically connecting a conductor to a circuit board by directly plugging the connector device into a contact hole of the circuit board in a contact opening of the circuit board. For this purpose, the plug device has a fastening area and a transmission area for transmitting a current from the conductor to the printed circuit board. The transmission area or the entire plug device can be made of aluminum. Automotive applications are mentioned as the intended use for the plug device, for example high mechanical loads and high currents being transmitted.

DE 10 2005 018 780 A1 offenbart einen Platinenverbindungsanschluss mit einem stabilen elektrischen Kontakt bei starker Haltekraft des Anschlusses. Der Anschluss kann ein Presspassanschluss oder ein Einpressanschluss sein, welcher in einer Busleiste für gedruckte Schaltungen oder eine gedruckte Leiterplatte eingesetzt beziehungsweise geklemmt und mit einer Platine elektrisch verbunden wird. Dadurch wird Strom aus einer Batterie übertragen oder elektrische Signale werden ohne Lötstelle übertragen. Der Anschluss ist aus einem leitfähigen Material, so z.B. aus einer Aluminiumlegierung hergestellt und wird durch Stanzen und Pressen des leitfähigen Materials geformt. Der Anschluss stellt die elektrische Energie für die Busleiste eines Schaltkreises in einem elektrischen Verbinderkasten, z.B. eine Anschlussdose oder ein Sicherungskasten bereit und steuert elektronische Elemente, wie z.B. eine Sicherung oder ein Relais. Die Busleiste kann in einem elektrischen Verbindungskasten vorgesehen sein, der in einem Maschinenraum oder unter einer Fahrzeuginnenausstattung angeordnet ist. DE 10 2005 018 780 A1 discloses a circuit board connection terminal with a stable electrical contact with a strong holding force of the connection. The connection can be a press-fit connection or a press-in connection, which is used or clamped in a bus bar for printed circuits or a printed circuit board and is electrically connected to a circuit board. As a result, electricity is transferred from a battery or electrical signals are transmitted without a solder joint. The connector is made of a conductive material, such as an aluminum alloy, and is formed by stamping and pressing the conductive material. The connection provides the electrical energy for the bus bar of a circuit in an electrical connector box, for example a junction box or a fuse box, and controls electronic elements, such as a fuse or a relay. The bus bar can be provided in an electrical connection box, which is arranged in a machine room or under a vehicle interior.

DE 10 2009 008 118 A1 offenbart ein Verfahren zur Herstellung eines elektrischen Kontakts auf einer Leiterplatte, wobei der Kontakt über eine kraftschlüssige Verbindung zwischen einem Einpressstift, der eine Einpresszone und einem Kontaktbereich aufweist und einer metallisierten Leiterplattenöffnung hergestellt wird. Der gesamte Einpressstift oder lediglich die Einpresszone können mit Aluminium beschichtet ausgebildet sein. DE 10 2009 008 118 A1 discloses a method for producing an electrical contact on a printed circuit board, the contact via a non-positive connection between a press-in pin, which has a press-in zone and a contact area and a metallized printed circuit board opening is produced. The entire press-in pin or only the press-in zone can be coated with aluminum.

Bei derzeit auf dem Markt erhältlichen Steuergeräten für Automobilanwendungen werden häufig Peripherie und Schaltungsträger mittels Einpress- oder Schneidklemmverbindungen, der sogenannten kalten Kontaktiertechnik (KKT) verbunden. Die kalte Kontaktiertechnik mittels Einpressverbindungen stellt eine kostengünstige und robuste Alternative zur Löttechnik beispielsweise dem THT-Verfahren (Through-Hole Technology) dar. Beim Einsatz von Einpressverbindungen kann ferner ein blindes Fügen ermöglicht werden, wie dies z.B. bei der Kontaktierung von im Deckel befindlichen Komponenten erforderlich ist. Derzeit werden im Rahmen von Einpressverbindungen im Wege der kalten Kontaktiertechnik Kupfer und verschiedene Kupferlegierungen wie beispielsweise CuNiSi und CuSn6 mit einer entsprechenden Endoberfläche zum Beispiel galvanisches Zinn eingesetzt.In control devices for automotive applications currently available on the market, peripherals and circuit carriers are frequently connected by means of press-in or insulation displacement connections, the so-called cold contacting technology (KKT). The cold contacting technology by means of press-in connections represents a cost-effective and robust alternative to the soldering technology, for example the THT process (Through-Hole Technology). When using press-in connections, blind joining can also be made possible, as e.g. is required when contacting components located in the cover. At present, copper and various copper alloys such as CuNiSi and CuSn6 with a corresponding end surface, for example galvanic tin, are used in the context of press-in connections using cold contacting technology.

Aus der Offenlegungsschrift US2007/259540 A1 ist ein Einpresspin offenbart, welcher als ganzer aus verschiedenen Materialien vorgesehen sein kann.From the published application US2007 / 259540 A1 a press-in pin is disclosed, which can be provided as a whole from different materials.

Die Offenlegungsschrift DE102006031839 A1 zeigt ein Kontaktelement, bei welchen Flachteile aus unterschiedlichem Material stoffschlüssig miteinander verbunden sind.The disclosure DE102006031839 A1 shows a contact element in which flat parts made of different materials are integrally connected.

Die Offenlegungsschrift DE4242837 A1 offenbart das Einpressen eines Einpressstiftes bzw. einer Einpressfeder in eine Leiterplatte mittels eines Einpresswerkzeuges in Form einer Sonotrode, durch welche die Krafteinleitung beim Einpressvorgang unter einer Schwingungsbeaufschlagung des Einpressstiftes bzw. der Einpressfeder erfolgt.The disclosure DE4242837 A1 discloses the pressing in of a press-in pin or a press-in spring into a printed circuit board by means of a press-in tool in the form of a sonotrode, by means of which the force is introduced during the press-in process by applying vibrations to the press-in pin or the press-in spring.

Aus der Offenlegungsschrift DE102006017587 A1 ist ein federnd nachgiebiger Stift bekannt. Der federnd nachgiebige Stift beinhaltet einen Presspassungsbereich mit Elastizität, welcher in einem Presssitz innerhalb einer Durchgangsöffnung in einer Leiterplatte aufgrund einer elastischen Verformung des Presspassungsbereiches gegen ein Herausziehen gesichert ist.From the published application DE102006017587 A1 a resilient pin is known. The resilient pin contains a press-fit area with elasticity, which is secured in a press fit within a through opening in a printed circuit board due to an elastic deformation of the press-fit area against being pulled out.

Offenbarung der ErfindungDisclosure of the invention

Erfindungsgemäß wird ein Einpresspin für einen Schaltungsträger, und sein Herstellungsverfahren vorgeschlagen. Der Schaltungsträger hat mindestens eine Einpresszone an der Leiterbahnen kontaktierbar sind. Ein anderer Einpresspin als der erfindungsgemäß vorgeschlagene Einpresspin kann aus Aluminiumvollmaterial gefertigt seinoder auch als ein aus Aluminiumvollmaterial gefertigter Einpresspin ausgebildet sein, der mit einer Beschichtung, insbesondere einer walzplattierten Kupfermantelbeschichtung versehen ist. In einer Ausführungsvariante dieses Einpresspins, der im Wege der kalten Kontaktiertechnik mit dem Schaltungsträger verbunden wird, kann das Aluminiumvollmaterial mit einer galvanischen Beschichtung überzogen sein. Bei dieser galvanischen Beschichtung kann es sich beispielsweise um NiAu oder Sn handeln.According to the invention, a press-in pin for a circuit carrier and its production method are proposed. The circuit carrier has at least one press-fit zone can be contacted on the conductor tracks. A press-in pin other than the press-in pin proposed according to the invention can be made of solid aluminum material or can also be designed as a press-in pin made of solid aluminum material, which is provided with a coating, in particular a roll-clad copper-clad coating. In one embodiment variant of this press-in pin, which is connected to the circuit carrier by means of cold contact technology, the solid aluminum material can be coated with a galvanic coating. This galvanic coating can be NiAu or Sn, for example.

Erfindungsgemäß enthält der Einpresspin Aluminiummaterialabschnitte. So wird in der erfindungsgemäßen Ausführung des Einpresspins dieser als "Sandwich"-Bauteil gefertigt und umfasst in sequentieller Abfolge beispielsweise einen aus Kupfer-Material gefertigten federnden Bereich, der im Schaltungsträger in die entsprechende Einpresszone hinein gedrückt wird. An diesen ersten Abschnitt des Einpresspins schließt sich ein Aluminium-Abschnitt an, innerhalb dessen eine Umlenkzone des Einpresspins liegt. Mit Umlenkzone ist eine solche Zone des Einpresspins gemeint, innerhalb der der Einpresspin beispielsweise eine 90°-Umlenkung erfährt und von einem vertikalen Verlauf beispielsweise in einen horizontalen Verlauf übergeht. Anstelle der erwähnten 90°-Umlenkung kann die Umlenkung des Einpresspins je nach Erfordernissen und Anwendungsfall auch andere Winkelverläufe annehmen.According to the press-in pin contains aluminum material sections. Thus, in the embodiment of the press-in pin according to the invention, it is manufactured as a "sandwich" component and comprises, in sequential order, for example a resilient area made of copper material, which is pressed into the corresponding press-in zone in the circuit carrier. This first section of the press-in pin is followed by an aluminum section, within which a deflection zone of the press-in pin lies. A deflection zone means such a zone of the press-in pin, within which the press-in pin experiences, for example, a 90 ° deflection and changes from a vertical course to a horizontal course, for example. Instead of the 90 ° deflection mentioned, the deflection of the press-in pin can also assume other angular profiles, depending on requirements and application.

An diesen die Umlenkung des Einpresspins verwirklichenden AI-Abschnitt kann sich wiederum ein Leitungsabschnitt anschließen, der aus Cu oder aus einer Cu-Legierung gefertigt ist. Somit stellt der Einpresspin in dieser Ausführungsvariante ein Hybrid-Bauteil dar.A line section, which is made of Cu or a Cu alloy, can in turn be connected to this AI section which realizes the deflection of the press-in pin. In this variant, the press-in pin represents a hybrid component.

In einer Ausführungsvariante eines nicht erfindungsgemäß vorgeschlagenen Einpresspins, kann dieser aus Al-Vollmaterial gefertigt sein. Auf die äußere Oberfläche dieses Al-Materials kann dann eine Cu-Mantelbeschichtung aufgebracht werden. Das Aufbringen dieser Cu-Mantelbeschichtung erfolgt bevorzugt im Wege des Walzplattierens. Erhalten wird gemäß dieser Ausführungsvariante ein Einpresspin, dessen mechanische Eigenschaften im Wesentlichen durch das Al-Material zu charakterisieren sind.In an embodiment variant of a press-in pin not proposed according to the invention, it can be made of solid Al material. A Cu cladding coating can then be applied to the outer surface of this Al material. This Cu cladding coating is preferably applied by roll cladding. According to this embodiment variant, a press-in pin is obtained, the mechanical properties of which can essentially be characterized by the Al material.

Erfindungsgemäß wird der federnde Bereich, d.h. der Einpressbereich des Einpresspins in den Schaltungsträger durch zwei Wangen gebildet, die durch eine Öffnung voneinander getrennt sind. Aufgrund der Elastizität der Wangen, lassen sich diese beispielsweise durch Ultraschallunterstützung in die entsprechenden Einpresszonen des Schaltungsträgers montieren, so dass Oxide besser vom Aluminiummaterial abgetrennt werden können.According to the invention, the resilient region, that is to say the press-in region of the press-in pin into the circuit carrier, is formed by two cheeks which are separated from one another by an opening are separated. Due to the elasticity of the cheeks, these can be mounted, for example by means of ultrasound support, in the corresponding press-in zones of the circuit carrier, so that oxides can be better separated from the aluminum material.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäß vorgeschlagene Lösung zeichnet sich insbesondere dadurch aus, dass durch die Verwendung von Aluminium statt Kupfer, beziehungsweise Kupferlegierungen der Aluminiumwerkstoff ein geringeres E-Modul und somit eine geringere Steifigkeit als Cu aufweist. Bei gleicher Geometrie stellen sich somit bessere Werte hinsichtlich des E-Moduls und der Steifigkeit verglichen mit Kupfermaterial ein. Dies wiederum führt dazu, dass thermomechanisch induzierte Spannungen infolge von Temperaturwechseln besser abgebaut werden können. In vorteilhafter Weise kann der erfindungsgemäß vorgeschlagene Einpresspin nach wie vor aus bandförmigem Material hergestellt werden, was mit dem Vorteil einhergeht, dass Werkzeuge, beziehungsweises bewährte Fertigungsprozesse nicht verändert werden müssen. Um Oxide zuverlässig zu entfernen, kann der erfindungsgemäß vorgeschlagene Einpresspin in seinen oben stehend skizzierten drei Ausführungsvarianten mit Ultraschallunterstützung in die entsprechenden Einpresszonen des Schaltungsträgers montiert werden.The solution proposed according to the invention is characterized in particular by the fact that, by using aluminum instead of copper or copper alloys, the aluminum material has a lower modulus of elasticity and thus a lower one Has stiffness as Cu. With the same geometry, better values with regard to the modulus of elasticity and the stiffness are obtained compared to copper material. This in turn means that thermomechanically induced voltages due to temperature changes can be better reduced. Advantageously, the press-in pin proposed according to the invention can still be produced from strip-like material, which has the advantage that tools or proven manufacturing processes do not have to be changed. In order to reliably remove oxides, the press-in pin proposed according to the invention in its three design variants outlined above with ultrasound support can be installed in the corresponding press-in zones of the circuit carrier.

Hinsichtlich der Herstellbarkeit des erfindungsgemäß vorgeschlagenen Einpresspins, ist hervorzuheben, dass eine elektrische Kontaktierung beziehungsweise eine Steckverbindung eine reibkorrosionsbeständige Oberfläche benötigen kann. Eine derartige Oberfläche kann beispielsweise fertigungstechnisch dadurch erreicht werden, dass die kompletten Bänder, d.h. das Rohmaterial beziehungsweise teilweise bereits ausgestanzte Einpresspins mittels einer galvanisch aufgebrachten Beschichtung veredelt werden können. Bei der galvanischen Beschichtung kann es sich beispielsweise um NiAu, Sn, NiPdAu und dergleichen handeln.With regard to the manufacturability of the press-in pin proposed according to the invention, it should be emphasized that electrical contacting or a plug connection may require a surface that is resistant to friction corrosion. Such a surface can be achieved, for example, in terms of production engineering in that the complete belts, i.e. the raw material or partially already punched-in press-in pins can be refined by means of a galvanically applied coating. The galvanic coating can be, for example, NiAu, Sn, NiPdAu and the like.

Durch die erfindungsgemäß vorgeschlagene Lösung kann die Robustheit beziehungsweise die Dauerhaltbarkeit einer im Wege der Kaltkontaktierung hergestellten elektrischen Verbindung gegeben durch eine Steckverbindung zwischen Peripherie, Bauelement und einem Schaltungsträger erheblich verbessert werden. Durch die Ausführungsvarianten gemäß der vorliegenden Erfindung kann ein bestehendes Einpresspin-Portfolio bei elektronischen Steuerungen ersetzt beziehungsweise ausgebaut werden.Due to the solution proposed according to the invention, the robustness or the durability of an electrical connection made by cold contacting can be considerably improved by a plug connection between the periphery, component and a circuit carrier. The embodiment variants according to the present invention can be used to replace or expand an existing press-in pin portfolio in electronic controls.

Die erfindungsgemäß vorgeschlagene Lösung kann als medienbeständige Einpresstechnik wie z.B. beim Einsatz in Fahrzeuggetrieben erforderlich, Verwendung finden, es kann ein Kostenvorteil dadurch erreicht werden, dass statt Kupfer der Ersatzwerkstoff Aluminium eingesetzt werden kann.The solution proposed according to the invention can be used as a media-resistant press-in technique, e.g. required for use in vehicle transmissions, use can be made, a cost advantage can be achieved by using aluminum instead of copper.

Durch die hybride Ausformung der Einpresspins lässt sich ein optimales Verhältnis zwischen der mechanisch notwendigen Stabilität einerseits und der anwendungsspezifisch erforderlichen elektrischen Leitfähigkeit erzielen.The hybrid shape of the press-in pins enables an optimum relationship to be achieved between the mechanically required stability on the one hand and the electrical conductivity required for the application.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Anhand der Zeichnungen wird die Erfindung nachstehend eingehender beschrieben.The invention is described in more detail below with reference to the drawings.

Es zeigt:

  • Figur 1 eine Ausführungsvariante eines nicht erfindungsgemäß vorgeschlagenen Einpresspins hergestellt aus Aluminiumvollmaterial,
  • Figur 2 eine Ausführungsvariante des erfindungsgemäß vorgeschlagenen Einpresspins, hier als ausgebildet als Hybrid- oder Sandwich-Bauteil und
  • Figur 3 eine Ausführungsvariante eines nicht erfindungsgemäß vorgeschlagenen Einpresspins, bei dem Aluminiumvollmaterial mit einer galvanischen Beschichtung versehen ist.
It shows:
  • Figure 1 1 a variant of a press-in pin not proposed according to the invention made of solid aluminum material,
  • Figure 2 a variant of the press-in pin proposed according to the invention, here as a hybrid or sandwich component and
  • Figure 3 an embodiment variant of a press-in pin not proposed according to the invention, in which solid aluminum material is provided with a galvanic coating.

Ausführungsformen der ErfindungEmbodiments of the invention

Der Darstellung gemäß Figur 1 ist eine Ausführungsvariante eines nicht erfindungsgemäß vorgeschlagenen Einpresspins aus Aluminiumvollmaterial zu entnehmen.According to the presentation Figure 1 An embodiment variant of a press-in pin made of solid aluminum material not proposed according to the invention can be found.

Figur 1 zeigt einen Schaltungsträger 10, wobei in das Trägersubstrat des Schaltungsträgers 10 Leiterbahnen 30 eingebettet sind. Die innerhalb des Schaltungsträgers 10 verlaufenden Leiterbahnen 30 sind mit Kontaktflächen 32 verbunden. Die Kontaktflächen 32 ihrerseits sind von Anlageflächen 28 umschlossen, welche eine Einpressöffnung 12 im Schaltungsträger 10 ergänzen. Aus der Schnittdarstellung gemäß Figur 1 geht hervor, dass sich die Einpressöffnung 12 durchgängig durch den Schaltungsträger 10 von dessen Oberseite zu dessen Unterseite hin erstreckt. Die Einpressöffnung 12 stellt eine Einpresszone 14 dar, in welcher ein Einpresspin 16 eingepresst wird. Bei dem Einpresspin 16 gemäß der Darstellung in Figur 1 handelt es sich um einen solchen, welcher durchgängig aus Aluminiummaterial 36 gefertigt ist. Der aus Aluminiumvollmaterial gefertigte durchgängige Einpresspin 16 wird unter Ultraschallunterstützung in die Einpresszone 14 des Schaltungsträgers 10 eingepresst. Durch die Ultraschallunterstützung können in zuverlässiger Weise Oxide vom Aluminiummaterial 36 des durchgängigen Einpresspins 34 entfernt werden. Das Einpressen des Einpresspins 16 gemäß der ersten Ausführungsvariante erfolgt im Wege der kalten Kontaktierungstechnik. Figure 1 shows a circuit carrier 10, wherein conductor tracks 30 are embedded in the carrier substrate of the circuit carrier 10. The conductor tracks 30 running within the circuit carrier 10 are connected to contact surfaces 32. The contact surfaces 32 in turn are surrounded by contact surfaces 28, which complement a press-in opening 12 in the circuit carrier 10. From the sectional view according to Figure 1 it can be seen that the press-in opening 12 extends continuously through the circuit carrier 10 from its top to its bottom. The press-in opening 12 represents a press-in zone 14, in which a press-in pin 16 is pressed. With the press-in pin 16 as shown in Figure 1 it is one which is made entirely of aluminum material 36. The continuous press-in pin 16 made of solid aluminum material is pressed into the press-in zone 14 of the circuit carrier 10 with the aid of ultrasound. The ultrasound support can reliably remove oxides from the aluminum material 36 of the continuous press-in pin 34. The press-in of the press-in pin 16 according to the first Design variant takes place using cold contacting technology.

Aus der Darstellung gemäß Figur 1 geht hervor, dass der Einpresspin eine 90°-Umlenkung 18 aufweist. Diese ist, wie Figur 1 zu entnehmen ist, aus Aluminiumvollmaterial 36 des Einpresspins 16 ausgebildet. An dem Ende des Einpresspins 16, welches in die Einpressöffnung 12 der Einpresszone 14 hineinragt, weist der Einpresspin 16 einen federnden Bereich 20 auf. Der federnde Bereich 20 ist im Aluminiummaterial 36 durch eine erste Wange 22 sowie eine zweite Wange 24 definiert. Zwischen den Wangen 22 und 24 liegt eine Öffnung 26. Die beiden Wangen 22 und 24 weisen elastische Eigenschaften auf und kontaktieren die Kontaktflächen 32 nach Montage des Einpresspins 16 in der Einpressöffnung 12. Der in der Figur 1 dargestellte aus Aluminiumvollmaterial 36 gefertigte Einpresspin kann eine vollständige oder partielle Galvanik-Beschichtung aufweisen. Geeignete Oberflächen sind zum Beispiel NiAu und Sn.From the representation according to Figure 1 shows that the press-in pin has a 90 ° deflection 18. This is how Figure 1 can be seen, formed from solid aluminum material 36 of the press-in pin 16. At the end of the press-in pin 16, which projects into the press-in opening 12 of the press-in zone 14, the press-in pin 16 has a resilient region 20. The resilient region 20 is defined in the aluminum material 36 by a first cheek 22 and a second cheek 24. Between the cheeks 22 and 24 there is an opening 26. The two cheeks 22 and 24 have elastic properties and contact the contact surfaces 32 after assembly of the press-in pin 16 in the press-in opening 12 Figure 1 The press-in pin shown made of solid aluminum material 36 can have a complete or partial electroplating coating. Suitable surfaces are, for example, NiAu and Sn.

Figur 2 zeigt eine Ausführungsvariante des erfindungsgemäß vorgeschlagenen Einpresspins, der als Hybrid- oder Sandwich-Bauteil ausgebildet ist. Figure 2 shows an embodiment variant of the press-in pin proposed according to the invention, which is designed as a hybrid or sandwich component.

Wie der Darstellung gemäß Figur 2 entnommen werden kann, handelt es sich bei diesem Einpresspin 16 um einen solchen, der einen Cu-Federbereich 38 aufweist, an den sich ein aus Aluminiumvollmaterial gefertigter Umlenkbereich 40 anschließt, der wiederum in einen Cu-Leitungsabschnitt 42 übergeht. Die Geometrie des Einpresspins gemäß der Darstellung in Figur 2 nach der Ausführungsvariante der erfindungsgemäß vorgeschlagenen Lösung ist identisch zur Geometrie des Einpresspins 16 gemäß der Darstellung in Figur 1, der dort aus Aluminiumvollmaterial 36 gefertigt ist.As shown Figure 2 can be removed, this press-in pin 16 is one which has a Cu spring area 38, which is followed by a deflection area 40 made of solid aluminum material, which in turn merges into a Cu line section 42. The geometry of the press-in pin as shown in Figure 2 The embodiment variant of the solution proposed according to the invention is identical to the geometry of the press-in pin 16 as shown in FIG Figure 1 , which is made of solid aluminum 36.

Wie Figur 2 zeigt, liegt die Umlenkung 18 gemäß der Ausführungsvariante des Einpresspins 16 ebenfalls im aus Aluminium gefertigten Teilabschnitt 40 des Einpresspins 16. Der Schaltungsträger 10 gemäß der Ausführungsvariante nach Figur 2 ist analog zum Schaltungsträger 10 gemäß Figur 1 aufgebaut. Im Trägersubstrat des Schaltungsträgers 10 verlaufen eingebettete Leiterbahnen 30, die mit Kontaktflächen 32 verbunden sind, die von Anlageflächen 28 umschlossen sind. Die Anlageflächen 28 schließlich begrenzen die Einpressöffnung 12, die innerhalb der Einpresszone 14 des Schaltungsträgers 10 liegt. Analog zur Darstellung gemäß Figur 1 erstreckt sich die Einpressöffnung 12 vollständig durch den Schaltungsträger 10, d.h. von dessen Ober- zu dessen Unterseite.As Figure 2 shows, the deflection 18 according to the embodiment variant of the press-in pin 16 also lies in the aluminum section 40 of the press-in pin 16. The circuit carrier 10 according to the embodiment variant Figure 2 is analogous to the circuit carrier 10 according to Figure 1 built up. Embedded conductor tracks 30 run in the carrier substrate of the circuit carrier 10 and are connected to contact surfaces 32 which are enclosed by contact surfaces 28. Finally, the contact surfaces 28 limit the press-in opening 12 which lies within the press-in zone 14 of the circuit carrier 10. Analogous to the representation according to Figure 1 the press-in opening 12 extends completely through the circuit carrier 10, ie from the top to the bottom thereof.

Im Unterschied zur Darstellung gemäß Figur 1 ist beim Einpresspin 16 gemäß der erfindungsgemäßen Ausführungsvariante, die in Figur 2 dargestellt ist, der Cu-Federbereich 38 nicht aus Aluminium sondern aus Kupfer gefertigt. Der Aluminium-Umlenkbereich 40 gemäß der Darstellung in Figur 2 hat den Vorteil, dass im Bereich der Umlenkung 18 ein geringeres E-Modul und somit eine geringere Steifigkeit bei gleicher Geometrie verglichen mit Kupferwerkstoff vorliegt. Dadurch können thermomechanisch induzierte Spannungen infolge von Temperaturwechseln auch bei der Konfiguration des Einpresspins 16 gemäß der zweiten Ausführungsvariante nach Figur 2 besser abgebaut werden.In contrast to the representation according to Figure 1 is in the press-in pin 16 according to the embodiment variant according to the invention, which in Figure 2 is shown, the Cu spring area 38 is not made of aluminum but of copper. The aluminum deflection area 40 as shown in FIG Figure 2 has the advantage that in the area of the deflection 18 there is a lower modulus of elasticity and thus a lower rigidity with the same geometry compared to copper material. Thereby, thermomechanically induced voltages due to temperature changes can also be configured in the configuration of the press-in pin 16 according to the second embodiment Figure 2 be broken down better.

Figur 3 zeigt eine weitere nicht erfindungsgemäß vorgeschlagenen Einpresspins aus Aluminiumvollmaterial mit einer walzplattierten Beschichtung. Figure 3 shows a further press-in pins not proposed according to the invention made of solid aluminum material with a roll-clad coating.

Figur 3 kann entnommen werden, dass der dort dargestellte Einpresspin 16 im Wesentlichen ebenfalls aus Al-Grundmaterial 36 gefertigt ist, jedoch über seine gesamte Oberfläche mit einer Mantelbeschichtung 48, die beispielsweise aus Kupfer walzplattiert sein kann, versehen ist. Die mechanischen Eigenschaften des Einpresspins 16 gemäß der in Figur 3 wiedergegebenen Ausführungsvariante werden im Wesentlichen durch das Aluminiummaterial 36, 46 definiert. Auch in der dieser Ausführungsvariante gemäß Figur 3 ist die Geometrie des Einpresspins 16 im Wesentlichen identisch mit den Geometrien der Einpresspins 16 gemäß der vorstehend beschriebenen Ausführungsvarianten nach Figur 1 und 2. Figure 3 it can be seen that the press-in pin 16 shown there is also essentially made of Al base material 36, but is provided over its entire surface with a jacket coating 48, which can be roll-plated, for example, from copper. The mechanical properties of the press-in pin 16 according to the in Figure 3 reproduced embodiment variants are essentially defined by the aluminum material 36, 46. Also according to this variant Figure 3 the geometry of the press-in pin 16 is essentially identical to the geometries of the press-in pin 16 according to the embodiment variants described above Figure 1 and 2 .

Analog zu diesen ist ein federnder Bereich 20 des Einpresspins 16 ausgebildet, der im Bereich der Öffnung 26 an der Innenseite und an der Außenseite der ersten Wange 22 beziehungsweise der zweiten Wange 24 mit einer Mantelbeschichtung 48 beispielsweise aus Kupfer versehen ist. Der Schaltungsträger 10 gemäß Figur 3 umfasst einzelne, in dessen Inneres eingebettete, Leiterbahnen 30, die mit Kontaktflächen 32 elektrisch verbunden sind, die ihrerseits von Anlageflächen 28 umschlossen werden, die die Einpressöffnung 12 der Einpresszone 14 im Schaltungsträger 10 begrenzen.Analogously to these, a resilient area 20 of the press-in pin 16 is formed, which is provided in the area of the opening 26 on the inside and on the outside of the first cheek 22 and the second cheek 24 with a jacket coating 48, for example made of copper. The circuit carrier 10 according to Figure 3 comprises individual conductor tracks 30 embedded in the interior thereof, which are electrically connected to contact surfaces 32, which in turn are surrounded by contact surfaces 28, which delimit the press-in opening 12 of the press-in zone 14 in the circuit carrier 10.

Auch im Zusammenhang mit den Ausführungsvarianten der Einpresspins 16 gemäß der Figuren 2 und 3 ist zu erwähnen, dass diese mit Ultraschallunterstützung in der Einpressöffnung 12 der Einpresszone 14 montiert werden. Durch den Einsatz von Ultraschall bei der Kaltmontage der Einpresspins 16 können andernfalls am Aluminiummaterial verbleibende Oxide zuverlässig entfernt werden.Also in connection with the design variants of the press-in pins 16 according to the Figures 2 and 3rd it should be mentioned that these are mounted with ultrasound support in the press-in opening 12 of the press-in zone 14. Through the use of ultrasound otherwise, when the press-fit pins 16 are cold-installed, oxides remaining on the aluminum material can be reliably removed.

Sämtlichen Ausführungsvarianten der Einpresspins 16 gemäß den Figuren 1 bis 3 ist gemeinsam, dass die Herstellung der Einpresspins 16 wie bisher aus bandförmigem Material erfolgen kann. Dies bietet den Vorteil, dass Werkzeuge und ein bewährter Fertigungsprozess unverändert beibehalten werden können. Für den Fall, dass eine Steckverbindung eine reibkorrosionsbeständige Oberfläche erfordert, kann das vorstehend erwähnte bandförmige Material beziehungsweise bereits teilweise ausgestanzte Einpresspins mittels einer galvanisch aufgebrachten Beschichtung veredelt werden. Derartige reibkorrosionsbeständige Oberflächen sind z.B. NiAu, Sn, NiPdAu, um einige zu nennen. Durch die erfindungsgemäß vorgeschlagenen Einpresspins 16 gemäß der beschriebenen Ausführungsvarianter kann die Robustheit und damit die Lebensdauer einer Verbindungsstelle erheblich erhöht werden. Bei der Verbindungsstelle kann es sich um eine solche handeln, die eine Steckverbindung darstellt zwischen einer Peripherie und einen Bauelement einerseits und andererseits mit dem Schaltungsträger 10. Durch die erfindungsgemäß vorgeschlagene Lösung kann in vorteilhafter Weise ein bestehendes Einpresspin-Portfolio bei elektronischen Steuerungen ergänzt werden. Die erfindungsgemäß vorgeschlagene Lösung lässt sich insbesondere im Rahmen einer medienbeständig ausgelegten Einpresstechnik einsetzen, wie diese beispielsweise beim Einsatz in Getriebesteuerungen von Fahrzeugen erforderlich wird. Der Ersatzwerkstoff Aluminium tritt an die Stelle des bisher eingesetzten Kupfers, wodurch sich Materialkosten in nicht unerheblichem Umfang einsparen lassen, da Aluminium ein kostengünstigeres Grundmaterial verglichen mit Kupfer ist. Durch die erfindungsgemäß vorgeschlagene Lösung lassen sich thermomechanisch induzierte Lasten dämpfen beziehungsweise reduzieren, so dass eine elektrische Steckverbindung, die im Wege der Kaltkontaktiertechnik erzeugt wird, hinsichtlich ihrer Dauerhaltbarkeit erheblich verbessert ist. Es wäre ebenfalls denkbar, auch weitere Schichtfolgen, d.h. einen Schichtverbund aus Cu, AI, Cu und Al zu verwirklichen. Anstelle von Cu und Al wären im vorliegenden Zusammenhang zur Herstellung von Hybrideinpresspins auch andere Materialpaarungen denkbar, so zum Beispiel Ni, Cu und Au.All design variants of the press-in pins 16 according to the Figures 1 to 3 has in common that the production of the press-in pins 16 can take place as before from band-shaped material. This offers the advantage that tools and a proven manufacturing process can be kept unchanged. In the event that a plug-in connection requires a friction-corrosion-resistant surface, the above-mentioned band-shaped material or press-in pins that have already been partially punched out can be refined by means of a galvanically applied coating. Such friction corrosion-resistant surfaces are, for example, NiAu, Sn, NiPdAu, to name a few. Due to the press-in pins 16 proposed according to the invention in accordance with the described embodiment variants, the robustness and thus the service life of a connection point can be considerably increased. The connection point can be one that represents a plug connection between a periphery and a component on the one hand and on the other hand with the circuit carrier 10. The solution proposed according to the invention can advantageously be used to supplement an existing press-in pin portfolio in electronic controls. The solution proposed according to the invention can be used in particular in the context of a press-in technology designed to be media-resistant, as is required, for example, when used in transmission controls of vehicles. The substitute material aluminum replaces the copper previously used, which means that material costs can be saved to a not inconsiderable extent, since aluminum is a cheaper basic material compared to copper. The solution proposed according to the invention can be used to dampen or reduce thermomechanically induced loads, so that an electrical plug connection which is produced by means of cold contacting technology is considerably improved in terms of its durability. It would also be conceivable to implement further layer sequences, ie a layer composite of Cu, Al, Cu and Al. Instead of Cu and Al, other material combinations would also be conceivable in the present context for the production of hybrid press-in pins, for example Ni, Cu and Au.

Claims (6)

  1. Press-in pin (16) for a circuit carrier (10) having at least one press-in zone (14), at which contact can be made with conductor tracks (30), and having a deflection (18), characterized in that the press-in pin (16) comprises, in a sequential sequence, a Cu spring region (38), an Al deflection region (40) and a Cu line section (42), wherein the deflection (18) is in the Al deflection region (40), within which the press-in pin (16) experiences a 90° deflection.
  2. Press-in pin according to the preceding claim, characterized in that the press-in pin (16) has a resilient region (20) which is formed by a first cheek (22) and a second cheek (24).
  3. Electrical contact-making means comprising a press-in pin (16) according to either of Claims 1 and 2 and a circuit carrier (10) having at least one press-in zone (14), wherein the press-in pin (16) is pressed into a press-in opening (12) of the circuit carrier (10).
  4. Electrical contact-making means according to Claim 3 comprising at least one press-in pin according to Claim 1 or 2 and a circuit carrier (10) having at least one press-in zone (14), at which contact can be made with conductor tracks (30), characterized in that press-in pins (16) are pressed into press-in openings (12) of the circuit carrier (10) in an ultrasonic-assisted manner.
  5. Method for producing an electrical contact-making means comprising at least one press-in pin according to Claim 1 or 2, characterized in that press-in pins (16) are punched out from strip-like material.
  6. Method according to Claim 5, characterized in that strip-like material or the press-in pins (16) which have been punched out is/are coated by a galvanic coating in a manner resistant to friction corrosion.
EP13744478.2A 2012-08-03 2013-07-24 Press-fit contact Active EP2880717B1 (en)

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DE102012213812.9A DE102012213812A1 (en) 2012-08-03 2012-08-03 Einpresskontaktierung
PCT/EP2013/065590 WO2014019906A1 (en) 2012-08-03 2013-07-24 Press-in contact

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EP2880717B1 true EP2880717B1 (en) 2020-04-22

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Also Published As

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EP2880717A1 (en) 2015-06-10
DE102012213812A1 (en) 2014-02-06
CN104521068B (en) 2017-07-11
CN104521068A (en) 2015-04-15
WO2014019906A1 (en) 2014-02-06
US20150214636A1 (en) 2015-07-30
US9455502B2 (en) 2016-09-27

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