EP2698874B1 - Contact system with a press-fit contact - Google Patents

Contact system with a press-fit contact Download PDF

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Publication number
EP2698874B1
EP2698874B1 EP13179108.9A EP13179108A EP2698874B1 EP 2698874 B1 EP2698874 B1 EP 2698874B1 EP 13179108 A EP13179108 A EP 13179108A EP 2698874 B1 EP2698874 B1 EP 2698874B1
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EP
European Patent Office
Prior art keywords
contact
rail
aperture
contact pin
region
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Application number
EP13179108.9A
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German (de)
French (fr)
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EP2698874A1 (en
Inventor
Stefan Huehner
Adolf Dillmann
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP2698874A1 publication Critical patent/EP2698874A1/en
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    • 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
    • H01R4/029—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
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts
    • H01R25/161—Details
    • H01R25/162—Electrical connections between or with rails or bus-bars
    • 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member

Definitions

  • the invention relates to a contact system comprising at least one mating contact, in particular an electrically conductive contact rail, and at least one electrically conductive contact pin.
  • the contact pin is formed to be pressed in an opening of the mating contact perpendicular to a flat extension of the mating contact, and to electrically contact the mating contact in the region of the opening, in particular to produce a gas-tight connection.
  • EP2456011A2 discloses an electrical terminal device comprising a bus bar and at least one clamping spring.
  • EP0735628A2 discloses a bus bar with a pin.
  • the contact rail in the region of the opening has a section which is angled away with at least one transverse component for the flat extension of the mating contact, in particular the contact rail.
  • the angled section is designed to reduce or prevent a mechanical easing of a pressing force of the mating contact on at least one longitudinal section of the contact pin in the region of the opening.
  • the mating contact is preferably formed by a metal sheet, in particular sheet metal.
  • the breakthrough is preferably formed in the metal sheet.
  • the mating contact is formed by a contact rail, which has at least one opening for connection to a contact pin.
  • at least one tab, in particular sheet metal tab are integrally formed on the contact rail, wherein the opening is formed in the tab.
  • the metal sheet is preferably a copper sheet or aluminum sheet.
  • the copper sheet is preferably formed of a copper having a tensile strength of at least 360 megapascals.
  • the mating contact is preferably formed by a copper sheet with a tensile strength of 240 to 300 megapascals.
  • the copper sheet is preferably formed by electrolytically produced pure copper with a copper content of more than 99.95 percent. As a further component, the copper sheet can have up to 0.003 percent phosphorus.
  • the material of the contact pin is harder than the material of the mating contact.
  • the material of the mating contact can be plastically deformed by the contact pin in the region of the opening and a cold weld joint can be produced.
  • the angled section is formed by at least part of a groove in the contact rail.
  • the channel is U-shaped, wherein a U-leg of the channel forms the angled portion.
  • the channel can be formed for example by means of a punching tool, or by milling in the contact rail.
  • the length from one end of the aperture to a contact rail edge is sufficient even at twice the material thickness of the contact rail in the region of the aperture, whereas in case of an angling must be maintained by the crimping and generating the angle, at least three times a material thickness of the contact rail from the edge of the aperture as a distance to the beginning of the angled region, so that the breakthrough, especially the contact rail in the region of the opening, is not adversely deformed.
  • the opening is formed in the region of a tab formed on the contact rail.
  • the contact rail has at least two tabs spaced apart from each other along a contact rail longitudinal extension, which each extend in a repulsive manner transversely to the longitudinal extension of the contact rail.
  • the tabs can be advantageous - preferably mutually electrically connected in parallel - contacts the contact rail to contact pins formed.
  • the contact pins are preferably electrically connected to each other.
  • the angled portion extends parallel to an edge of the aperture.
  • the edge of the opening can be strengthened by the bent portion, in particular be strengthened against bulging.
  • the cross section of the pin and the aperture are each formed rectangular.
  • the contact pin recesses so that in the contact pin in the region of an end portion, which is designed for press-bonding with the opening, forks are formed.
  • the contact pin preferably has at least two forks on the end section described above, preferably at least three, or at least four, forks. As a result, it is advantageously possible to generate a large pressing force when the contact pin is pressed into the recess.
  • the contact pin can have recesses in the region of the end section formed to contact the contact rail, instead of the recesses forming the aforementioned prongs, so that the aforementioned corners are formed in the region of the end section.
  • an electrical contact between the contact pin and the aperture on opposite inner sides of the aperture is formed.
  • a large contact surface for generating the electrical contact may be formed.
  • the breakthrough in its longitudinal extension is formed longer than a longitudinal extension of the cross section of the contact pin.
  • a tolerance compensation in the longitudinal extent of the opening may be formed, so that in the case of an offset insertion of the contact pin in the longitudinal extension of the opening of the contact pin and / or the contact rail, in particular the aforementioned tab in which the opening is formed, are not bent can.
  • a cohesive cold welding connection is produced by the press connection.
  • the contact pin has a larger transverse dimension in cross-section in the region of the end section designed to be connected to the contact rail, than the opening in its transverse dimension.
  • the contact pin can deform the contact rail in the area of the opening plastically pushing.
  • an electrical energy store comprises a contact system of the type described above.
  • the energy store comprises at least one capacitor, in particular winding capacitor or at least one accumulator.
  • connection rail in particular connection plate
  • contact pins of the type described above are integrally formed on the connection rail.
  • the contact rail points for each contact pin a breakthrough, wherein the contact pins are each press-connected in the opening with the contact rail.
  • FIG. 1 shows an embodiment of a contact system 1.
  • the contact system 1 has a contact rail 3, which extends flat and is formed in this embodiment by a metal sheet, in particular copper sheet.
  • the contact rail 3 has a tab 5 integrally formed on the contact rail 3, two recesses 18 and 21 being formed on the contact rail 3 in the region of an attachment of the tab 5, by which a transverse dimension of the tab 5 tapers in the region of the connection to the contact rail 3 is.
  • the tab 5 can spring along a pivot axis 33.
  • the contact system 1 also comprises a contact pin 10.
  • the contact pin 10 has two press-in shoulders 24 and 26 which are deflected transversely to its longitudinal extent.
  • the contact pin 10 has an end portion 23 which forms a longitudinal portion of the contact pin 10 and for pressing into an opening 7 of the contact rail 3, in particular in the tab 5, is formed.
  • the contact pin 10 has three forks in the region of the end section, namely the fork prong 12, the fork prong 14 and the fork prong 16.
  • the forks 12 and 14 are separated by a recess 13 from each other.
  • the forks 14 and 16 are each separated by a recess 15 from each other.
  • the contact pin 10 is formed transversely to a flat extension of the contact rail 3, and also to a flat extension of the tab 5, to be pressed into the opening 7, and the tab 5 in the region of the opening so to contact electrically.
  • the opening 7 is formed longitudinally stretched in this embodiment. Shown is a longitudinal axis 20 of the longitudinal extension of the opening 7.
  • the opening 7 has an edge 50, wherein the edge 50 along the longitudinal extension of the opening 7 is formed.
  • the edge 50 forms a part of an edge of the opening 7 in the tab 5.
  • the tab 5 also has a - 9 generated by injection, for example - gutter.
  • the channel 9 is U-shaped in this embodiment, wherein a U-leg of the channel 9 forms an angled portion 8, which extends with a transverse component to a flat extension of the tab 5.
  • the channel 9 has a width dimension 32, wherein the channel 9, in particular with its longitudinal extent, extends at a distance 38 from the aperture 7, in particular the edge 50, at a distance.
  • FIG. 2 shows the in FIG. 1 already shown fork tines 12, 14 and 16 of the contact pin 10, which have been pressed into the opening 7 of the tab 5.
  • the opening 7, which is rectangular in shape, has a transverse dimension 28, which runs transversely to the longitudinal extension 20 of the opening.
  • the contact pin 10, in particular the forks 12, 14 and 16 in the region of in FIG. 1 illustrated end portion 23, have a transverse dimension 30 which is greater than the transverse dimension 28 of the opening.
  • the edge 50 of the opening 7 in the region of the pressing of the contact pin 10 in the tab 5 is plastically deformed.
  • the forks 12, 14 and 16 generate in the region of the opening 7, in particular on the breakthrough wall of the opening 7, a cold welding connection.
  • the forks 12, 14 and 16 are integrally connected to the tab 5 of the contact rail 3.
  • a longitudinal dimension 27 of the opening 7 in this embodiment is greater than a width dimension 29 of the contact pin 10 in the region of the end portion 23.
  • a tolerance compensation can advantageously be formed so that neither the contact pin 10, nor the tab 5 at an offset along the longitudinal axis 20 insertion of the end portion 23 can be bent in the opening 7.
  • each recess in FIG. 1 represented recesses 13, or 15 four additional corners formed, which can secure the contact pin 10 in the opening 7 positively.
  • FIG. 3 shows a variant of a tab 6, which in addition to or instead of the tab 5 to the contact rail 3 in FIG. 1 can be formed.
  • the tab 6 has an opening 40, wherein a longitudinal extent of the opening 40 extends along a longitudinal axis 27.
  • the tab 6 has two to the longitudinal extent of the opening 40, in particular the longitudinal axis 27 parallel grooves 34 and 36.
  • the grooves 34 and 36 enclose the aperture 40 between each other.
  • the grooves 34 and 36 are generated for example by embossing, in particular a stamping edge, in the tab 6.
  • the tab 6 is formed in this embodiment by a sheet, in particular a metal sheet.
  • the metal sheet is formed by, for example, a copper sheet, an aluminum sheet, or a steel sheet.
  • the aperture 40 is rectangular in shape, wherein two opposing, along the longitudinal extension edges 52 and 54 of the aperture 40 are advantageously protected by the grooves 34, and 36 from bulging during or after pressing the contact pin 10 in the opening 40.
  • the groove 36 extends from the edge 54 parallel to the edge 54 spaced apart.
  • the channel 34 extends parallel to the edge 52.
  • the tab 6 has two recesses 35 and 37 which are spaced along the longitudinal axis 27 from the opening 40, each extending from an outer edge of the tab 6 transverse to the longitudinal axis 27 and thus transversely to the longitudinal extent of the opening 40 inwardly.
  • the tab 6 can thus pivot in the region of the recesses 35 and 37 transversely to the longitudinal axis 27 resiliently.
  • FIG. 4 shows an embodiment of a contact rail 4, are formed on the three tabs, which each like the tab 5 in FIG. 1 are formed.
  • connecting rail 60 to which three contact pins 62, 64 and 66, which are each deflected transversely to a longitudinal extension of the connecting rail 60, are formed.
  • the connecting rail 60 is formed in this embodiment as a flat extending sheet metal.
  • connection rail can, for example, form an electrical connection for at least one or at least two energy stores, which are connected to the connection rail with an electrical connection. Shown are the energy storage 68, 69 and 70, for example wound capacitors.
  • the electrical connections of the energy storage 68, 69 and 70 are formed for example by a Schoop layer 71 of a wound capacitor.
  • the connecting rail 60 is spot-welded, for example, to the Schoop layer of the energy stores 68, 69 and 70.
  • the energy stores 68, 69 and 70 can have a connection rail such as the connection rail 60 for each electrical connection, in particular a positive electrical connection and a negative electrical connection.
  • the energy storage devices can thus form, together with the two connecting rails such as the connection rail 60, a plug-in module which can be pressed together with the contact pins formed on the connection rails such as the contact pins 62, 64 and 66 in a contact rail, in particular in openings of the contact rail.
  • the contact pins 62, 64 and 66 each have two forks in this embodiment.
  • FIG. 5 shows a tab, in particular sheet metal tab, which is integrally formed on a contact rail 3.
  • the tab 75 has an opening 7.
  • An end portion 80 of the tab 75, which is spaced from the aperture 7, is angled.
  • a longitudinal extent of the opening 7 and a longitudinal extent of the angled portion are parallel to each other.

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  • Coupling Device And Connection With Printed Circuit (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Description

Stand der TechnikState of the art

Die Erfindung betrifft ein Kontaktsystem, umfassend wenigstens einen Gegenkontakt, insbesondere eine elektrisch leitfähige Kontaktschiene, und wenigstens einen elektrisch leitfähigen Kontaktstift. Der Kontaktstift ist ausgebildet, in einem Durchbruch des Gegenkontakts senkrecht zu einer flachen Erstreckung des Gegenkontakts eingepresst zu werden, und den Gegenkontakt im Bereich des Durchbruchs, insbesondere unter Erzeugung einer gasdichten Verbindung, elektrisch zu kontaktieren.
Bei Kontaktsystemen, bei denen zwei elektrisch leitfähige Fügepartner mittels Pressen zusammengefügt werden, besteht das Problem, dass viele dieser Verbindungen durch Vibrationen, oder andere Bewegungseinflüsse wenigstens teilweise gelöst werden können, und so eine Qualität der elektrischen Verbindung beeinträchtigt werden kann.The invention relates to a contact system comprising at least one mating contact, in particular an electrically conductive contact rail, and at least one electrically conductive contact pin. The contact pin is formed to be pressed in an opening of the mating contact perpendicular to a flat extension of the mating contact, and to electrically contact the mating contact in the region of the opening, in particular to produce a gas-tight connection.
In contact systems in which two electrically conductive joining partners are joined together by means of pressing, there is the problem that many of these connections can be at least partially released by vibrations or other effects of movement, and thus a quality of the electrical connection can be impaired.

EP2456011A2 offenbart ein elektrisches Klemmenbauelement umfassend eine Stromschiene und mindestens eine Klemmfeder. EP0735628A2 offenbart eine Sttromschiene mit einem Anschlussstift. EP2456011A2 discloses an electrical terminal device comprising a bus bar and at least one clamping spring. EP0735628A2 discloses a bus bar with a pin.

Offenbarung der ErfindungDisclosure of the invention

Erfindungsgemäß weist die Kontaktschiene im Bereich des Durchbruchs einen mit wenigstens einer Querkomponente zur flachen Erstreckung des Gegenkontakts, insbesondere der Kontaktschiene, abgewinkelten Abschnitt auf. Der abgewinkelte Abschnitt ist ausgebildet, ein mechanisches Nachlassen einer Presskraft des Gegenkontakts auf wenigstens einen Längsabschnitt des Kontaktstiftes im Bereich des Durchbruchs zu reduzieren, oder zu verhindern.According to the invention, the contact rail in the region of the opening has a section which is angled away with at least one transverse component for the flat extension of the mating contact, in particular the contact rail. The angled section is designed to reduce or prevent a mechanical easing of a pressing force of the mating contact on at least one longitudinal section of the contact pin in the region of the opening.

Es wurde nämlich erkannt, dass durch einen solchen abgewinkelten Abschnitt ein Nachgeben eines Materials des Gegenkontakts im Bereich des Durchbruchs verhindert werden kann.It has been recognized that a yielding of a material of the mating contact in the region of the opening can be prevented by such an angled section.

Der Gegenkontakt ist bevorzugt durch ein Blech, insbesondere Metallblech gebildet. Der Durchbruch ist bevorzugt in dem Metallblech ausgebildet. Bevorzugt ist der Gegenkontakt durch eine Kontaktschiene gebildet, welche wenigstens einen Durchbruch zum Verbinden mit einem Kontaktstift aufweist. Bevorzugt sind an die Kontaktschiene wenigstens eine Lasche, insbesondere Blechlasche angeformt, wobei der Durchbruch in der Lasche ausgebildet ist.The mating contact is preferably formed by a metal sheet, in particular sheet metal. The breakthrough is preferably formed in the metal sheet. Preferably, the mating contact is formed by a contact rail, which has at least one opening for connection to a contact pin. Preferably, at least one tab, in particular sheet metal tab are integrally formed on the contact rail, wherein the opening is formed in the tab.

Das Metallblech ist bevorzugt ein Kupferblech oder Aluminiumblech. Das Kupferblech ist bevorzugt aus einem Kupfer mit einer Zugfestigkeit von wenigstens 360 Megapascal gebildet. Der Gegenkontakt ist bevorzugt durch ein Kupferblech mit einer Zugfestigkeit von 240 bis 300 Megapascal gebildet. Das Kupferblech ist bevorzugt durch elektrolytisch erzeugtes Reinkupfer mit einem Kupferanteil von mehr als 99,95 Prozent gebildet. Als weiteren Bestandteil kann das Kupferblech bis zu 0,003 Prozent Phosphor aufweisen.The metal sheet is preferably a copper sheet or aluminum sheet. The copper sheet is preferably formed of a copper having a tensile strength of at least 360 megapascals. The mating contact is preferably formed by a copper sheet with a tensile strength of 240 to 300 megapascals. The copper sheet is preferably formed by electrolytically produced pure copper with a copper content of more than 99.95 percent. As a further component, the copper sheet can have up to 0.003 percent phosphorus.

Bevorzugt ist das Material des Kontaktstiftes härter ausgebildet als das Material des Gegenkontaktes. Dadurch kann das Material des Gegenkontaktes durch den Kontaktstift im Bereich des Durchbruchs plastisch verformt werden und eine Kaltschweißverbindung erzeugt werden.Preferably, the material of the contact pin is harder than the material of the mating contact. As a result, the material of the mating contact can be plastically deformed by the contact pin in the region of the opening and a cold weld joint can be produced.

Durch das so bewirkte Verhindern oder Reduzieren des Nachgebens des Kontaktschienenmaterials kann vorteilhaft ein Ausbauchen, insbesondere ein Erweitern des Durchbruchdurchmessers durch das Nachgeben des Materials verhindert werden, wobei das Ausbauchen einen Verlust des elektrischen Kontaktes zwischen dem Kontaktstift und der Kontaktschiene im Bereich des Durchbruchs zur Folge hat. Erfindungsgemäss ist der abgewinkelte Abschnitt durch wenigstens einen Teil einer Rinne in der Kontaktschiene gebildet. Die Rinne ist U-förmig ausgebildet, wobei ein U-Schenkel der Rinne den abgewinkelten Abschnitt bildet. Die Rinne kann beispielsweise mittels eines Stanzwerkzeuges, oder durch Fräsen in der Kontaktschiene gebildet sein.
Es wurde nämlich erkannt, dass durch das Ausbilden der Rinne im Vergleich zu einem bloßen Abwinkeln die Länge von einem Ende des Durchbruchs bis zu einem Kontaktschienenrand bereits bei einem Zweifachen einer Materialdicke der Kontaktschiene im Bereich des Durchbruchs ausreichend ist, wohingegen im Falle einer Abwinklung, bedingt durch das Umfalzen und Erzeugen des Winkels, wenigstens das Dreifache einer Materialdicke der Kontaktschiene vom Rand des Durchbruchs als Abstand bis zum Beginn des abgewinkelten Bereiches eingehalten werden muss, damit der Durchbruch, insbesondere die Kontaktschiene im Bereich des Durchbruchs, nicht nachteilig deformiert wird.By thus preventing or reducing the yielding of the contact rail material can advantageously bulging, in particular an expansion of the aperture diameter can be prevented by the yielding of the material, wherein the bulge has a loss of electrical contact between the contact pin and the contact rail in the region of the breakthrough result , According to the invention, the angled section is formed by at least part of a groove in the contact rail. The channel is U-shaped, wherein a U-leg of the channel forms the angled portion. The channel can be formed for example by means of a punching tool, or by milling in the contact rail.
Namely, it has been recognized that by forming the groove in comparison with a mere bending, the length from one end of the aperture to a contact rail edge is sufficient even at twice the material thickness of the contact rail in the region of the aperture, whereas in case of an angling must be maintained by the crimping and generating the angle, at least three times a material thickness of the contact rail from the edge of the aperture as a distance to the beginning of the angled region, so that the breakthrough, especially the contact rail in the region of the opening, is not adversely deformed.

In einer bevorzugten Ausführungsform des Kontaktsystems ist der Durchbruch im Bereich einer an die Kontaktschiene angeformten Lasche ausgebildet. Weiter bevorzugt weist die Kontaktschiene wenigstens zwei, entlang einer Kontaktschienenlängserstreckung zueinander beabstandete Laschen auf, welche sich jeweils quer zur Längserstreckung der Kontaktschiene abweisend erstrecken. Mittels der Laschen können vorteilhaft - bevorzugt zueinander elektrisch parallel geschaltete - Kontaktierungen der Kontaktschiene zu Kontaktstiften hin gebildet sein. Die Kontaktstifte sind bevorzugt elektrisch miteinander verbunden.In a preferred embodiment of the contact system, the opening is formed in the region of a tab formed on the contact rail. More preferably, the contact rail has at least two tabs spaced apart from each other along a contact rail longitudinal extension, which each extend in a repulsive manner transversely to the longitudinal extension of the contact rail. By means of the tabs can be advantageous - preferably mutually electrically connected in parallel - contacts the contact rail to contact pins formed. The contact pins are preferably electrically connected to each other.

In einer bevorzugten Ausführungsform erstreckt sich der abgewinkelte Abschnitt parallel zu einer Kante des Durchbruchs. So kann vorteilhaft die Kante des Durchbruchs durch den abgewinkelten Abschnitt gestärkt sein, insbesondere gegen ein Ausbauchen gestärkt sein.In a preferred embodiment, the angled portion extends parallel to an edge of the aperture. Thus, advantageously, the edge of the opening can be strengthened by the bent portion, in particular be strengthened against bulging.

In einer bevorzugten Ausführungsform des Kontaktsystems sind der Querschnitt des Stiftes und der Durchbruch jeweils rechteckförmig ausgebildet. Weiter bevorzugt weist der Kontaktstift Aussparungen auf, sodass bei dem Kontaktstift im Bereich eines Endabschnittes, welcher zum Pressverbinden mit dem Durchbruch ausgebildet ist, Gabelzinken ausgebildet sind.In a preferred embodiment of the contact system, the cross section of the pin and the aperture are each formed rectangular. Further preferably, the contact pin recesses, so that in the contact pin in the region of an end portion, which is designed for press-bonding with the opening, forks are formed.

Der Kontaktstift weist bevorzugt an dem zuvor beschriebenen Endabschnitt wenigstens zwei Gabelzinken auf, bevorzugt wenigstens drei, oder wenigstens vier Gabelzinken. Dadurch kann vorteilhaft eine große Presskraft beim Einpressen des Kontaktstiftes in die Aussparung erzeugt werden.The contact pin preferably has at least two forks on the end section described above, preferably at least three, or at least four, forks. As a result, it is advantageously possible to generate a large pressing force when the contact pin is pressed into the recess.

Durch die gabelförmige Ausbildung des Endabschnitts des Kontaktstiftes können beim Einpressen vorteilhaft für jede Gabelzinke vier Ecken des Kontaktstiftes in die Kontaktschiene einpressen. So ist vorteilhaft ein zusätzlicher Formschluss erzeugt, welcher ein Lösen der mechanischen, und so auch der elektrischen Verbindung zwischen dem Kontaktstift und der Kontaktschiene erschwert.Due to the bifurcated design of the end portion of the contact pin, four corners of the contact pin can advantageously be pressed into the contact rail during the pressing in for each fork prong. Thus, an additional positive connection is advantageously generated, which makes it difficult to release the mechanical, and thus also the electrical connection between the contact pin and the contact rail.

Der Kontaktstift kann im Bereich des zum Kontaktieren der Kontaktschiene ausgebildeten Endabschnitts anstelle der Aussparungen, welche die zuvor erwähnten Zinken ausbilden, Vertiefungen aufweisen, sodass die zuvor erwähnten Ecken im Bereich des Endabschnitts ausgebildet sind.The contact pin can have recesses in the region of the end section formed to contact the contact rail, instead of the recesses forming the aforementioned prongs, so that the aforementioned corners are formed in the region of the end section.

In einer bevorzugten Ausführungsform des Kontaktsystems ist ein elektrischer Kontakt zwischen dem Kontaktstift und dem Durchbruch an einander gegenüberliegenden Innenseiten des Durchbruchs ausgebildet. So kann vorteilhaft eine große Kontaktfläche zum Erzeugen des elektrischen Kontakts gebildet sein.In a preferred embodiment of the contact system, an electrical contact between the contact pin and the aperture on opposite inner sides of the aperture is formed. Thus, advantageously, a large contact surface for generating the electrical contact may be formed.

Weiter bevorzugt ist der Durchbruch in seiner Längserstreckung länger ausgebildet, als eine Längserstreckung des Querschnitts des Kontaktstifts. So kann vorteilhaft ein Toleranzausgleich in der Längserstreckung des Durchbruchs gebildet sein, sodass im Falle eines versetzten Einsteckens des Kontaktstiftes in der Längserstreckung des Durchbruchs der Kontaktstift und/oder die Kontaktschiene, insbesondere die zuvor erwähnte Lasche, in welcher der Durchbruch ausgebildet ist, nicht verbogen werden kann.
In einer bevorzugten Ausführungsform ist durch die Pressverbindung eine stoffschlüssige Kaltschweißverbindung erzeugt. Bevorzugt weist der Kontaktstift im Bereich des zum Verbinden mit der Kontaktschiene ausgebildeten Endabschnitts eine größere Querabmessung im Querschnitt auf, als der Durchbruch in seiner Querabmessung. So kann der Kontaktstift die Kontaktschiene im Bereich des Durchbruchs plastisch eindrückend verformen. Die Rinne, oder der abgewinkelte Abschnitt bewirken dabei vorteilhaft eine Versteifung der Kontaktschiene im Bereich der längsgestreckten Durchbruchkante, sodass ein Ausbauchen der Kontaktschiene im Bereich des Durchbruchs verhindert werden kann.
In einer bevorzugten Ausführungsform des Kontaktsystems ist der Durchbruch längsgestreckt ausgebildet, und im Bereich von zwei einander gegenüberliegenden Seiten der Längserstreckung ist jeweils ein abgewinkelter Bereich ausgebildet. Weiter bevorzugt ist an den zwei einander gegenüberliegenden Seiten der Längserstreckung des Durchbruchs jeweils eine Rinne ausgebildet. So kann vorteilhaft ein Ausbauchen der sich längs erstreckenden Kanten des Durchbruchs verhindert werden. In einer bevorzugten Ausführungsform umfasst ein elektrischer Energiespeicher ein Kontaktsystem der vorbeschriebenen Art. Der Energiespeicher umfasst wenigstens einen Kondensator, insbesondere Wickelkondensator oder wenigstens einen Akkumulator. Ein elektrischer Anschluss des Energiespeichers ist mit einer Anschlussschiene, insbesondere Anschlussblech elektrisch verbunden und an die Anschlussschiene sind wenigstens ein, bevorzugt wenigstens zwei Kontaktstifte der vorbeschriebenen Art angeformt. Die Kontaktschiene weist für jeden Kontaktstift einen Durchbruch auf, wobei die Kontaktstifte jeweils in dem Durchbruch mit der Kontaktschiene pressverbunden sind.More preferably, the breakthrough in its longitudinal extension is formed longer than a longitudinal extension of the cross section of the contact pin. Thus, advantageously, a tolerance compensation in the longitudinal extent of the opening may be formed, so that in the case of an offset insertion of the contact pin in the longitudinal extension of the opening of the contact pin and / or the contact rail, in particular the aforementioned tab in which the opening is formed, are not bent can.
In a preferred embodiment, a cohesive cold welding connection is produced by the press connection. Preferably, the contact pin has a larger transverse dimension in cross-section in the region of the end section designed to be connected to the contact rail, than the opening in its transverse dimension. Thus, the contact pin can deform the contact rail in the area of the opening plastically pushing. The channel, or the angled section advantageously cause a stiffening of the contact rail in the region of the elongate breakthrough edge, so that bulging of the contact rail in the region of the opening can be prevented.
In a preferred embodiment of the contact system, the aperture is formed elongated, and in the region of two opposite sides of the longitudinal extent of each an angled region is formed. More preferably, a groove is formed on the two opposite sides of the longitudinal extension of the opening. Thus, advantageously bulging of the longitudinally extending edges of the opening can be prevented. In a preferred embodiment, an electrical energy store comprises a contact system of the type described above. The energy store comprises at least one capacitor, in particular winding capacitor or at least one accumulator. An electrical connection of the energy store is electrically connected to a connection rail, in particular connection plate, and at least one, preferably at least two, contact pins of the type described above are integrally formed on the connection rail. The contact rail points for each contact pin a breakthrough, wherein the contact pins are each press-connected in the opening with the contact rail.

Die Erfindung wird nun im Folgenden anhand von Figuren und weiteren Ausführungsbeispielen erläutert. Weitere vorteilhafte Ausführungsformen ergeben sich aus den Merkmalen der abhängigen Ansprüche und den in den Figuren beschriebenen Merkmalen.

  • Figur 1 zeigt ein Ausführungsbeispiel für ein Kontaktsystem mit einem Gegenkontakt, welcher als eine an eine Kontaktschiene angeformte Lasche ausgebildet ist;
  • Figur 2 zeigt das in Figur 1 dargestellte Kontaktsystem in einer Aufsicht, in der eine plastische Verformung der Kontaktschiene im Bereich des Durchbruchs, bewirkt beim Einpressen des Kontaktstiftes in den Durchbruch dargestellt ist;
  • Figur 3 zeigt eine Variante einer Lasche als Gegenkontakt, bei der ein Durchbruch durch zwei den Durchbruch flankierende Rinnen vor einem Ausbauchen geschützt ist;
  • Figur 4 zeigt eine Kontaktschiene mit drei angeformten Laschen, in denen jeweils ein Durchbruch ausgebildet ist, und eine Anschlussschiene mit angeformten Kontaktstiften, welche Bestandteil eines elektrischen Energiespeichers sein kann.
The invention will now be explained below with reference to figures and further embodiments. Further advantageous embodiments will become apparent from the features of the dependent claims and the features described in the figures.
  • FIG. 1 shows an embodiment of a contact system with a mating contact, which is designed as a formed on a contact rail tab;
  • FIG. 2 shows that in FIG. 1 illustrated contact system in a plan view, in which a plastic deformation of the contact rail in the region of the opening, is effected when pressing the contact pin in the opening;
  • FIG. 3 shows a variant of a tab as a mating contact, in which a breakthrough is protected by two flanks flanking the breakthrough from bulging;
  • FIG. 4 shows a contact rail with three molded tabs, in each of which an opening is formed, and a connecting rail with molded contact pins, which may be part of an electrical energy storage.

Figur 1 zeigt ein Ausführungsbeispiel für ein Kontaktsystem 1. Das Kontaktsystem 1 weist eine Kontaktschiene 3 auf, welche sich flach erstreckt und in diesem Ausführungsbeispiel durch ein Metallblech, insbesondere Kupferblech gebildet ist. Die Kontaktschiene 3 weist eine an die Kontaktschiene 3 angeformte Lasche 5 auf, wobei im Bereich einer Anformung der Lasche 5 an die Kontaktschiene 3 zwei Aussparungen 18 und 21 ausgebildet sind, durch die eine Querabmessung der Lasche 5 im Bereich der Anbindung an die Kontaktschiene 3 verjüngt ist. Dadurch kann die Lasche 5 entlang einer Schwenkachse 33 federn. FIG. 1 shows an embodiment of a contact system 1. The contact system 1 has a contact rail 3, which extends flat and is formed in this embodiment by a metal sheet, in particular copper sheet. The contact rail 3 has a tab 5 integrally formed on the contact rail 3, two recesses 18 and 21 being formed on the contact rail 3 in the region of an attachment of the tab 5, by which a transverse dimension of the tab 5 tapers in the region of the connection to the contact rail 3 is. As a result, the tab 5 can spring along a pivot axis 33.

Das Kontaktsystem 1 umfasst auch einen Kontaktstift 10. Der Kontaktstift 10 weist in diesem Ausführungsbeispiel zwei quer zu seiner Längserstreckung abweisende Einpressschultern 24 und 26 auf. Der Kontaktstift 10 weist einen Endabschnitt 23 auf, welcher einen Längsabschnitt des Kontaktstiftes 10 bildet und zum Einpressen in einen Durchbruch 7 der Kontaktschiene 3, insbesondere in der Lasche 5, ausgebildet ist. Der Kontaktstift 10 weist dazu im Bereich des Endabschnitts drei Gabelzinken, nämlich die Gabelzinke 12, die Gabelzinke 14 und die Gabelzinke 16 auf. Die Gabelzinken 12 und 14 sind durch eine Aussparung 13 voneinander getrennt.The contact system 1 also comprises a contact pin 10. In this embodiment, the contact pin 10 has two press-in shoulders 24 and 26 which are deflected transversely to its longitudinal extent. The contact pin 10 has an end portion 23 which forms a longitudinal portion of the contact pin 10 and for pressing into an opening 7 of the contact rail 3, in particular in the tab 5, is formed. For this purpose, the contact pin 10 has three forks in the region of the end section, namely the fork prong 12, the fork prong 14 and the fork prong 16. The forks 12 and 14 are separated by a recess 13 from each other.

Die Gabelzinken 14 und 16 sind jeweils durch eine Aussparung 15 voneinander getrennt. Der Kontaktstift 10 ist ausgebildet, quer zu einer flachen Erstreckung der Kontaktschiene 3, und auch zu einer flachen Erstreckung der Lasche 5, in den Durchbruch 7 eingepresst zu werden, und die Lasche 5 im Bereich des Durchbruchs so elektrisch zu kontaktieren. Der Durchbruch 7 ist in diesem Ausführungsbeispiel längsgestreckt ausgebildet. Dargestellt ist eine Längsachse 20 der Längserstreckung des Durchbruchs 7. Der Durchbruch 7 weist eine Kante 50 auf, wobei die Kante 50 entlang der Längserstreckung des Durchbruchs 7 ausgebildet ist. Die Kante 50 bildet einen Teil eines Randes des Durchbruchs 7 in der Lasche 5. Die Lasche 5 weist auch eine - beispielsweise durch Einprägen erzeugte - Rinne 9 auf.The forks 14 and 16 are each separated by a recess 15 from each other. The contact pin 10 is formed transversely to a flat extension of the contact rail 3, and also to a flat extension of the tab 5, to be pressed into the opening 7, and the tab 5 in the region of the opening so to contact electrically. The opening 7 is formed longitudinally stretched in this embodiment. Shown is a longitudinal axis 20 of the longitudinal extension of the opening 7. The opening 7 has an edge 50, wherein the edge 50 along the longitudinal extension of the opening 7 is formed. The edge 50 forms a part of an edge of the opening 7 in the tab 5. The tab 5 also has a - 9 generated by injection, for example - gutter.

Die Rinne 9 ist in diesem Ausführungsbeispiel U-förmig ausgebildet, wobei ein U-Schenkel der Rinne 9 einen abgewinkelten Abschnitt 8 bildet, welcher sich mit einer Querkomponente zu einer flachen Erstreckung der Lasche 5 erstreckt. Die Rinne 9 weist eine Breitenabmessung 32 auf, wobei die Rinne 9, insbesondere mit ihrer Längserstreckung, mit einem Abstand 38 zu dem Durchbruch 7, insbesondere der Kante 50, beabstandet verläuft.The channel 9 is U-shaped in this embodiment, wherein a U-leg of the channel 9 forms an angled portion 8, which extends with a transverse component to a flat extension of the tab 5. The channel 9 has a width dimension 32, wherein the channel 9, in particular with its longitudinal extent, extends at a distance 38 from the aperture 7, in particular the edge 50, at a distance.

Wenn der Kontaktstift 10 mit dem Endabschnitt 23 in den Durchbruch 7 eingepresst worden ist, so ist zwischen den Gabelzinken 12, 14 und 16 und der Wand des Durchbruchs 7 eine Kaltschweißverbindung erzeugt. Dies ist im Detail in Figur 2 in einer Aufsicht näher dargestellt. Das mittels der Aussparungen 18 und 21 gebildete Schwenkgelenk kann die elektrische Verbindung zwischen dem Kontaktstift 10 und der Lasche 5 mechanisch federnd entlasten.
Der Kontaktstift weist zwei Aussparungen 17 und 19 auf, so dass der zum Einführen in den Durchbruch 7 ausgebildete Endabschnitt 23 um eine Schwenkachse 22 federnd schwenken kann und die elektrische Kontaktierung im Bereich des Durchbruchs 7 so vor mechanischen Belastungen geschützt ist.When the contact pin 10 has been pressed with the end portion 23 in the opening 7, so a cold weld is generated between the forks 12, 14 and 16 and the wall of the opening 7. This is shown in greater detail in detail in FIG. 2 in a plan view. The means of the recesses 18 and 21 formed pivot joint can relieve the electrical connection between the contact pin 10 and the tab 5 mechanically resilient.
The contact pin has two recesses 17 and 19, so that the end portion 23 formed for insertion into the aperture 7 can pivot resiliently about a pivot axis 22 and the electrical contact in the region of the aperture 7 is thus protected from mechanical loads.

Figur 2 zeigt die in Figur 1 bereits dargestellten Gabelzinken 12, 14 und 16 des Kontaktstiftes 10, welche in den Durchbruch 7 der Lasche 5 eingepresst worden sind. Der Durchbruch 7, welcher rechteckig ausgebildet ist, weist eine Querabmessung 28 auf, welche quer zur Längserstreckung 20 des Durchbruchs verläuft. Der Kontaktstift 10, insbesondere die Gabelzinken 12, 14 und 16 im Bereich des in Figur 1 dargestellten Endabschnitts 23, weisen eine Querabmessung 30 auf, welche größer ist als die Querabmessung 28 des Durchbruchs. Dadurch wird die Kante 50 des Durchbruchs 7 im Bereich des Einpressens des Kontaktstifts 10 in die Lasche 5 plastisch verformt. Die Gabelzinken 12, 14 und 16 erzeugen jeweils im Bereich des Durchbruchs 7, insbesondere an der Durchbruchwand des Durchbruchs 7 eine Kaltschweißverbindung. Die Gabelzinken 12, 14 und 16 sind so mit der Lasche 5 der Kontaktschiene 3 stoffschlüssig verbunden. FIG. 2 shows the in FIG. 1 already shown fork tines 12, 14 and 16 of the contact pin 10, which have been pressed into the opening 7 of the tab 5. The opening 7, which is rectangular in shape, has a transverse dimension 28, which runs transversely to the longitudinal extension 20 of the opening. The contact pin 10, in particular the forks 12, 14 and 16 in the region of in FIG. 1 illustrated end portion 23, have a transverse dimension 30 which is greater than the transverse dimension 28 of the opening. As a result, the edge 50 of the opening 7 in the region of the pressing of the contact pin 10 in the tab 5 is plastically deformed. The forks 12, 14 and 16 generate in the region of the opening 7, in particular on the breakthrough wall of the opening 7, a cold welding connection. The forks 12, 14 and 16 are integrally connected to the tab 5 of the contact rail 3.

Eine Längsabmessung 27 des Durchbruchs 7 ist in diesem Ausführungsbeispiel größer als eine Breitenabmessung 29 des Kontaktstiftes 10 im Bereich des Endabschnitts 23. So kann vorteilhaft ein Toleranzausgleich gebildet sein, sodass weder der Kontaktstift 10, noch die Lasche 5 bei einem entlang der Längsachse 20 versetzten Einführen des Endabschnitts 23 in den Durchbruch 7 verbogen werden können.A longitudinal dimension 27 of the opening 7 in this embodiment is greater than a width dimension 29 of the contact pin 10 in the region of the end portion 23. Thus, a tolerance compensation can advantageously be formed so that neither the contact pin 10, nor the tab 5 at an offset along the longitudinal axis 20 insertion of the end portion 23 can be bent in the opening 7.

Mittels der Ausbildung des Endabschnitts 23 als Gabelzinken sind mit jeder Aussparung der in Figur 1 dargestellten Aussparungen 13, beziehungsweise 15 vier zusätzliche Ecken gebildet, welche den Kontaktstift 10 in dem Durchbruch 7 formschlüssig sichern können.By means of the formation of the end portion 23 as forks are with each recess in FIG. 1 represented recesses 13, or 15 four additional corners formed, which can secure the contact pin 10 in the opening 7 positively.

Figur 3 zeigt eine Variante für eine Lasche 6, welche zusätzlich oder anstelle der Lasche 5 an die Kontaktschiene 3 in Figur 1 angeformt sein kann. Die Lasche 6 weist einen Durchbruch 40 auf, wobei eine Längserstreckung des Durchbruchs 40 entlang einer Längsachse 27 verläuft. Die Lasche 6 weist zwei zur Längserstreckung des Durchbruchs 40, insbesondere der Längsachse 27 parallel verlaufende Rinnen 34 und 36 auf. Die Rinnen 34 und 36 schließen den Durchbruch 40 zwischen einander ein. Die Rinnen 34 und 36 sind beispielsweise durch Einprägen, insbesondere einer Prägekante, in die Lasche 6 erzeugt. Die Lasche 6 ist in diesem Ausführungsbeispiel durch ein Blech, insbesondere ein Metallblech gebildet. Das Metallblech ist beispielsweise durch ein Kupferblech, ein Aluminiumblech, oder ein Stahlblech gebildet. Der Durchbruch 40 ist rechteckförmig ausgebildet, wobei zwei einander gegenüberliegende, entlang der Längserstreckung verlaufende Kanten 52 und 54 des Durchbruchs 40 vorteilhaft mittels der Rinnen 34, beziehungsweise 36 vor einem Ausbauchen während oder nach einem Einpressen des Kontaktstifts 10 in den Durchbruch 40 geschützt sind. Die Rinne 36 erstreckt sich von der Kante 54 parallel zur Kante 54 beabstandet. Die Rinne 34 erstreckt sich parallel beabstandet zur Kante 52. FIG. 3 shows a variant of a tab 6, which in addition to or instead of the tab 5 to the contact rail 3 in FIG. 1 can be formed. The tab 6 has an opening 40, wherein a longitudinal extent of the opening 40 extends along a longitudinal axis 27. The tab 6 has two to the longitudinal extent of the opening 40, in particular the longitudinal axis 27 parallel grooves 34 and 36. The grooves 34 and 36 enclose the aperture 40 between each other. The grooves 34 and 36 are generated for example by embossing, in particular a stamping edge, in the tab 6. The tab 6 is formed in this embodiment by a sheet, in particular a metal sheet. The metal sheet is formed by, for example, a copper sheet, an aluminum sheet, or a steel sheet. The aperture 40 is rectangular in shape, wherein two opposing, along the longitudinal extension edges 52 and 54 of the aperture 40 are advantageously protected by the grooves 34, and 36 from bulging during or after pressing the contact pin 10 in the opening 40. The groove 36 extends from the edge 54 parallel to the edge 54 spaced apart. The channel 34 extends parallel to the edge 52.

Die Lasche 6 weist zwei Aussparungen 35 und 37 auf, welche sich entlang der Längsachse 27 vom Durchbruch 40 beabstandet, jeweils von einer Außenkante der Lasche 6 quer zur Längsachse 27 und somit quer zur Längserstreckung des Durchbruchs 40 nach innen erstrecken. Die Lasche 6 kann so im Bereich der Aussparungen 35 und 37 quer zur Längsachse 27 federnd schwenken.The tab 6 has two recesses 35 and 37 which are spaced along the longitudinal axis 27 from the opening 40, each extending from an outer edge of the tab 6 transverse to the longitudinal axis 27 and thus transversely to the longitudinal extent of the opening 40 inwardly. The tab 6 can thus pivot in the region of the recesses 35 and 37 transversely to the longitudinal axis 27 resiliently.

Figur 4 zeigt ein Ausführungsbeispiel für eine Kontaktschiene 4, an die drei Laschen angeformt sind, welche jeweils wie die Lasche 5 in Figur 1 ausgebildet sind. FIG. 4 shows an embodiment of a contact rail 4, are formed on the three tabs, which each like the tab 5 in FIG. 1 are formed.

Dargestellt ist auch eine Anschlussschiene 60, an die drei jeweils zu einer Längserstreckung der Anschlussschiene 60 quer abweisende Kontaktstifte 62, 64 und 66 angeformt sind. Die Anschlussschiene 60 ist in diesem Ausführungsbeispiel als ein sich flach erstreckendes Blech ausgebildet.Also shown is a connecting rail 60, to which three contact pins 62, 64 and 66, which are each deflected transversely to a longitudinal extension of the connecting rail 60, are formed. The connecting rail 60 is formed in this embodiment as a flat extending sheet metal.

Die Anschlussschiene kann beispielsweise einen elektrischen Anschluss für wenigstens einen, oder wenigstens zwei Energiespeicher bilden, welche mit einem elektrischen Anschluss mit der Anschlussschiene verbunden sind. Dargestellt sind die Energiespeicher 68, 69 und 70, beispielsweise Wickelkondensatoren.The connection rail can, for example, form an electrical connection for at least one or at least two energy stores, which are connected to the connection rail with an electrical connection. Shown are the energy storage 68, 69 and 70, for example wound capacitors.

Die elektrischen Anschlüsse der Energiespeicher 68, 69 und 70 sind beispielsweise durch eine Schoop-Schicht 71 eines Wickelkondensators gebildet. Die Anschlussschiene 60 ist beispielsweise mit der Schoop-Schicht der Energiespeicher 68, 69 und 70 punktverschweißt. Die Energiespeicher 68, 69 und 70 können für jeden elektrischen Anschluss, insbesondere einen positiven elektrischen Anschluss und einen negativen elektrischen Anschluss, eine Anschlussschiene wie die Anschlussschiene 60 aufweisen. Die Energiespeicher können so gemeinsam mit den zwei Anschlussschienen wie die Anschlussschiene 60 ein Steckmodul ausbilden, welches mit den an die Anschlussschienen angeformten Kontaktstiften wie die Kontaktstifte 62, 64 und 66 in eine Kontaktschiene, insbesondere in Durchbrüche der Kontaktschiene eingepresst werden kann. Die Kontaktstifte 62, 64 und 66 weisen in diesem Ausführungsbeispiel jeweils zwei Gabelzinken auf.The electrical connections of the energy storage 68, 69 and 70 are formed for example by a Schoop layer 71 of a wound capacitor. The connecting rail 60 is spot-welded, for example, to the Schoop layer of the energy stores 68, 69 and 70. The energy stores 68, 69 and 70 can have a connection rail such as the connection rail 60 for each electrical connection, in particular a positive electrical connection and a negative electrical connection. The energy storage devices can thus form, together with the two connecting rails such as the connection rail 60, a plug-in module which can be pressed together with the contact pins formed on the connection rails such as the contact pins 62, 64 and 66 in a contact rail, in particular in openings of the contact rail. The contact pins 62, 64 and 66 each have two forks in this embodiment.

Figur 5 zeigt eine Lasche, insbesondere Blechlasche, die an eine Kontaktschiene 3 angeformt ist. Die Lasche 75 weist einen Durchbruch 7 auf. Ein Endabschnitt 80 der Lasche 75, der von dem Durchbruch 7 beabstandet ist, ist abgewinkelt. Eine Längserstreckung des Durchbruchs 7 und eine Längserstreckung des abgewinkelten Abschnitts verlaufen parallel zueinander. FIG. 5 shows a tab, in particular sheet metal tab, which is integrally formed on a contact rail 3. The tab 75 has an opening 7. An end portion 80 of the tab 75, which is spaced from the aperture 7, is angled. A longitudinal extent of the opening 7 and a longitudinal extent of the angled portion are parallel to each other.

Claims (12)

  1. Contact system (1) comprising at least one electrically conductive contact rail (3, 4) and at least one electrically conductive contact pin (10, 62, 64, 66), wherein the contact pin (10, 62, 64, 66) is configured to be pressed into an aperture (7, 40) of the contact rail (3, 4) orthogonally to a flat extension of the contact rail (3, 4) and to electrically contact the contact rail (3, 4) in the region of the aperture (7, 40), wherein the contact rail (3, 4) has, in the region of the aperture (7, 40), a section (8) angled with at least one transverse component towards to the flat extension of the contact rail (3, 4), wherein the angled section (8, 80) is configured to reduce or to prevent mechanical weakening of a press force of the contact rail (3, 4) on a longitudinal section (23) of the contact pin (10, 62, 64, 66) in the region of the aperture (7, 40), characterized in that the angled section (8) is formed at least by a portion of a groove (9) in the contact rail (3, 4) and wherein the groove (9) is configured in a U-shaped manner, wherein a U-limb of the groove (9) forms the angled section (8).
  2. Contact system (1) according to Claim 1, characterized in that the contact rail is formed by a metal sheet and the groove is produced by impression or milling.
  3. Contact system (1) according to either one of the preceding claims, characterized in that the aperture is formed in the region of a lug (5, 6, 75) formed on the contact rail (3, 4).
  4. Contact system (1) according to any one of the preceding claims, characterized in that the angled section (8, 80) extends in parallel with an edge of the aperture.
  5. Contact system (1) according to any one of the preceding claims, characterized in that the cross section of the contact pin (10, 62, 64, 66) and of the aperture (7, 40) are each of rectangular-shaped configuration, wherein the contact pin has recesses (13, 15) so that fork arms (12, 14, 16) are formed in the contact pin (10) in the region of an end section (23), which is configured for compression connection with the aperture (7, 40).
  6. Contact system according to Claim 5, characterized in that the contact pin (10, 62, 64, 66) has at least three fork arms (12, 14, 16) on the end section (23).
  7. Contact system (1) according to Claim 5 or 6, characterized in that, due to the fork-shaped configuration of the end section of the contact pin, for each fork arm (12, 14, 16), four corners of the contact pin (10) can press into the contact rail (3, 4) during pressing of the contact pin (10, 62, 64, 66) into the aperture (7, 40).
  8. Contact system (1) according to any one of the preceding Claims 5 to 7, characterized in that an electrical contact is formed between the contact pin (10) and the aperture (40) at inner sides of the aperture (40) that lie opposite one another.
  9. Contact system (1) according to any one of the preceding Claims 5 to 8, characterized in that the aperture (7, 40) is configured to be longer in its longitudinal extension (27) of the rectangular shape than a longitudinal extension (29) of the contact pin (10) in cross section.
  10. Contact system (1) according to any one of the preceding claims, characterized in that the material of the contact pin (10, 62, 64, 66) is formed to be harder than the material of the contact rail (3, 4) so that the material of the contact rail (3, 4) can be plastically deformed by the contact pin (10, 62, 64, 66) in the region of the aperture (40) and a cold-welded connection can be produced.
  11. Contact system (1) according to any one of the preceding claims, characterized in that the aperture (40) is configured in a longitudinally extended and rectangular-shaped manner and a groove (34, 36) is formed in each case in the region of two sides (52, 54) of the longitudinal extension that lie opposite one another.
  12. Electrical energy store having at least one contact system according to any one of the preceding claims, wherein the energy store comprises at least one capacitor (68, 69, 70) or accumulator, wherein at least one electrical connection (71) of the energy store is electrically connected to a connection rail (60) and at least one, preferably at least two, contact pins (62, 64, 66) are formed on the connection rail (60), wherein the contact rail (4) has an aperture for each contact pin (62, 64, 66) and the contact pins (62, 64, 66) are each compression-connected in the aperture to the contact rail (4).
EP13179108.9A 2012-08-16 2013-08-02 Contact system with a press-fit contact Active EP2698874B1 (en)

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DE102012214549A1 (en) 2014-02-20
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