EP2721695B1 - Contacting elements - Google Patents

Contacting elements Download PDF

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Publication number
EP2721695B1
EP2721695B1 EP12725386.2A EP12725386A EP2721695B1 EP 2721695 B1 EP2721695 B1 EP 2721695B1 EP 12725386 A EP12725386 A EP 12725386A EP 2721695 B1 EP2721695 B1 EP 2721695B1
Authority
EP
European Patent Office
Prior art keywords
contact
circuit board
contact spring
printed circuit
making
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.)
Not-in-force
Application number
EP12725386.2A
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German (de)
French (fr)
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EP2721695A2 (en
Inventor
Rainer Kienzle
Bernd KILAST
Harald Eisenhardt
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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Publication date
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Publication of EP2721695A2 publication Critical patent/EP2721695A2/en
Application granted granted Critical
Publication of EP2721695B1 publication Critical patent/EP2721695B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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

Definitions

  • a contact spring for printed circuit boards is self-holding formed as a one-piece contact spring and comprises two spring legs and a base between the spring legs, for insertion into a breakthrough of a printed circuit board.
  • the holder of the contact spring on the circuit board is effected by a resilient engaging behind of the spring legs of the contact spring molded cam, which is ensured by appropriate design of the cam edge pressing the circuit board between the base and cam.
  • DE 296 17 905 U1 also refers to a printed circuit board with a contact spring.
  • an electrical connector for releasably contacting a circuit board with an electronic or electromechanical device comprising a contact spring having at least one contact surface for the releasable contact engagement.
  • DE-U-9205698.9 refers to contacting a loudspeaker located within a telephone station with a circuit board provided within the telephone station.
  • the contact spring disclosed here comprises two arms extending parallel to the printed circuit board. Along a linear contact point, the contact is shown. In one embodiment, free end portions of the arms extending parallel to the printed circuit board could be angled.
  • the contact carrier comprises a component-side carrier top side and a carrier underside and at least one conductor track or a number of through holes through which a contact element contacted with the conductor track is inserted, which projects beyond the carrier underside and serves to receive a plug contact element of the respective component.
  • the contact element lies with at least one contacted with the conductor contact strap on the carrier top.
  • the contact element comprises a terminal connected to the contact tab and over the underside of the carrier protruding clamping contact part for the respective plug-in contact element.
  • the contact element is preferably designed as a stamped and bent part and procure one piece.
  • DE 34 36 119 A1 refers to a contact spring element for contacting printed circuit boards.
  • an electrically conductive connection between a carrier part and a printed circuit board or a sheet metal part is made possible by means of a resiliently arranged on the edge of the carrier plate contact clip.
  • the integrally formed contact clip has a latchable foot with arranged thereon contact part with a plurality of opposite contact spring tabs for receiving therebetween the circuit board or the sheet metal part.
  • the foot part comprises, in the locked state, a receiving edge provided in the carrier part and engages via a spring lug in a latching opening of the carrier part arranged at a distance from the receiving edge.
  • an arrangement according to the preamble of claim 1 which comprises a printed circuit board with a cutout, in which a contacting element is arranged, and a contact pin. For making a contact while the contact pin is inserted into the contacting element.
  • various contacting possibilities for a printed circuit board are known from the prior art. These include Einpastepins, solder contacts, direct connectors, contact pads, conductive rubbers and the like.
  • An arrangement which comprises a printed circuit board and a contact pin and a contacting element, designed as a contact spring, with spring-trained contact spring legs which contact a contact surface of a contact pin.
  • the printed circuit board is provided with at least one printed circuit board cutout, in which the contacting element is arranged and between the printed circuit board, the contact pin and the contacting element, a plurality of electrically conductive contacts are formed, wherein the contact spring legs have bent ends having a bending edge or bending line with defined contact points, which form a contact with pads of the printed circuit board, wherein the contacting element has opposing contact spring legs, in each of which at least one contact spring tongue is formed, which is formed by slotting, wherein the at least one contact spring tongue has a bent end, which facilitates the insertion of the contact pin.
  • the at least one contact spring tongue has an embossing which electrically conductively contacts an end face of a printed circuit board cutout.
  • the contacting element is resilient and provides a plurality of defined contact points between the printed circuit board and the contacting element, such as the contact to be contacted by it.
  • the inventively proposed increase in the number of contact points on the one hand reduces contact resistance and on the other hand significantly improves the current carrying capacity of the invention proposed contacting element.
  • a more accurate positioning of the contacting element which permits a plurality of defined contact points or support lines with the surface and end sides of a printed circuit board, can be achieved with respect to the contact partner.
  • contact spring limbs extending essentially opposite one another extend in which at least one contact spring tongue is formed.
  • the oppositely formed contact spring legs of the invention proposed contacting element have at their upper end respectively bent Kunststofffederschenkelausstart. In these about 90 ° with respect to the contact spring leg angled Kunststofffederschenkelausuite Uber are arranged.
  • the bends can be provided, for example, by embossing defined contact points on a linearly extending bending edge in the contact spring leg outlet. This results in a contacting region extending on the underside of the contact spring armature outlet, so that the contacting pad arranged underneath it on the surface of the printed circuit board can be formed in a smaller space requirement.
  • the essentially oppositely arranged, resilient contact spring legs comprise slots which define contact spring tongues.
  • the contact spring tongues are bent outwardly at the end to ensure a safe insertion of the contact pin.
  • insertion bevels are formed on the undersides of the contact spring leg outlets. These insertion bevels serve as insertion aid of the contacting element preferably designed as a contact spring during the assembly process.
  • the insertion bevels allow the mounting of the contacting element in a printed circuit board cutout with chamfers or radii.
  • the contacting element which is designed as a contact spring, has punched or otherwise manufactured slits through which contact spring tongues are produced in the substantially oppositely arranged contact spring legs. These in turn allow a distribution of the current to a plurality of contact spring tongues and thus advantageously a reduction of the contact resistance and thus an increase in the current carrying capacity of the inventively proposed contacting element.
  • the at least one contact spring tongue further offers a tolerance compensation against a rotation of the contact element proposed according to the invention relative to its installation position in the printed circuit board cutout of the printed circuit board. A larger number of contact tongues, which are punched, for example, in the side walls of the contact spring legs of Kunststoffmaschinesfederettis allows this advantageous effect.
  • the slits, the substantially opposing contact spring legs extending contact spring tongues can be formed in an arc shape. This allows easier handling in the event that the contacting elements proposed according to the invention are produced as bulk material, so that at its handling according to this advantageous embodiment of the solution proposed by the invention a hooking individual contacting elements can be avoided each other.
  • the execution of the embossing on the spring legs on the outside of the contact element is designed so that the joining forces are minimized in the circuit board.
  • This in turn has the advantage that the burdens in the area of the breakouts in the circuit board remain minimal and thus the Tabuzonen can be reduced, which in turn allows a minimum installation space in a simple manual or semi-manual assembly process.
  • this type of execution of the embossing significantly reduces the abrasion of the surface coating of the printed circuit board and of the contacting element during the joining process. This, in turn, is very important for a durable low contact resistance over the lifetime seen.
  • FIG. 1 shows a perspective view of a particular trained as a contact spring contacting element. Like yourself FIG.
  • a contacting element 10 designed in particular as a contact spring comprises two contoured contact spring limbs 20 arranged essentially opposite one another.
  • the at least one contact spring tongue 12 has a bent end piece 14.
  • the contact spring tongues 12 are through slits 16, as in FIG. 1 shown schematically, can run straight or as FIG. 3 is removable, can extend in an arcuate shape 42, formed.
  • the at least one contact spring tongue 12 in each of the contact spring legs 20 can be made for example by means of punching 18, wherein in each of the at least one contact spring tongue 12 each have an embossment 46 (see illustration according to FIG FIG. 2 ) is produced.
  • each other contact spring leg 20 are resiliently connected together via a bottom 54. Both contact spring leg 20 extend substantially, starting from the bottom 54 in the vertical direction and run at its upper end substantially in 90 ° angle oriented Kunststofffederschenkel spouts 22 from.
  • the contact spring leg outlets 22 are, as in FIG. 1 indicated, defined contact points 26a and 26b arranged. This ensures that the contact spring leg outlets 22 are formed bent upward, so that defined contact points 26b of a bending edge 26a to the circuit board 48 can be formed.
  • FIG. 2 is a side view of the inventively proposed arrangement comprising a contact element, designed to be taken as a contact spring.
  • FIG. 2 It can be seen that the printed circuit board 48 shown here in accordance with the invention is electrically conductively contacted at a plurality of contacting points by the contacting element 10 designed as a contact spring
  • FIG. 2 shows that, for example, the contact spring leg outlets 22 at the top of substantially oppositely oriented to each other Maisfederschenkel 20 the Contact surface 50 of the circuit board 48 to pads 28 and the printed circuit board cutout 34.
  • defined contact points 26 b are arranged along the bending edge 26 a, so that an electrically conductive contact with a reduced space between the arranged at the bottom of the Kunststofffederschenkel spouts 22 defined contact points 26 b and the pads 28, located at the top 50 of the electrically are to be contacted circuit board 48 is generated.
  • FIG. 2 shows that the at least one contact spring tongue 12, which is formed in the oppositely oriented contact spring legs 20, embossments 46 has.
  • the embossings 46 contact the printed circuit board 48 in the region of end faces 44 of a printed circuit board cutout 34.
  • further electrically conductive contacts ie, the inventively proposed increase in the number of electrically conductive contacting points between the contacting element 10 and a circuit board 48 shown here, for example, realized.
  • the contact spring leg is then advantageously even at the appropriate places with embossing 56, 58 provided in order to achieve a defined contact.
  • the first embossing 56 of the contact spring legs 20 contacts the contact pin 30.
  • the second embossing 58 of the contact spring legs 20 contacts the printed circuit board 48 in the transition of the end face 44 of a printed circuit board cutout 34 and the surface 50 of the printed circuit board 48.
  • FIG. 3 is a further view of the proposed arrangement according to the invention with the contacting element in the mounted in a printed circuit board cutout of a printed circuit board state.
  • FIG. 3 shows that, for example, in the transition region between the bent contact spring leg outlets 22 of the two oppositely arranged contact spring leg 20 insertion bevels 36 are formed.
  • the insertion bevels 36 serve as an insertion aid and for positioning in the printed circuit board cutout 34 of the contact element 10 proposed according to the invention during the assembly process, ie during insertion of the contacting element 10 into a printed circuit board cutout 34 of a printed circuit board 48 to be electrically contacted.
  • the lead-in bevel 36 and the bend make it possible to use the present invention, in particular formed as a contact spring contacting element 10 in the printed circuit board cutout 34, are formed on the radii to obstruct.
  • the possibility of obstructing by means of the insertion bevel 36, the contacting element 10 proposed according to the invention, in the printed circuit board cutout 34 at the radii makes a punching process for producing the printed circuit board cutout 34 superfluous.
  • the insertion bevels 36 with respect to their position, number of bends, which may be formed on one or more sides, a centering of the contacting element 10 with respect to the contact pin 30 to be contacted can be ensured. As shown in the illustration FIG.
  • a contact spring tongue 12 is executed in the contact spring leg 20 shown here in the plane of the drawing. This is by material removal in the form of an arcuate slits 40 resilient with respect to the remaining material of in FIG. 3 procure the contact spring leg 20 shown in the drawing plane.
  • arcuate notches 40 shown by way of example can of course also produce a plurality of spring-trained contact spring tongues 12 in the wall of the contact spring limb 20. The more arcuate slots 40 in the material of the contact spring leg 20th are generated, the greater the number of electrical contact points is generated.
  • a reduction of the contact resistance between the printed circuit board 48 to be contacted and the contacting element 10 proposed according to the invention can take place, which in turn can significantly increase its current carrying capacity.
  • the cross section of the contacting element can be increased and thus its current carrying capacity can be increased if necessary.
  • a spring-trained contact spring tongue 12 is shown in the wall material of the contact spring leg 20.
  • the slit 40 extends in an arc shape.
  • slit sheet 42 surround an embossment 46 formed in the material of the contact spring leg 20, which after formation of the arcuate slots 40 is a spring-formed contact spring tongue 12, 38.
  • This imprint 46 represents, compare representation according to FIG. 2 .
  • can be formed by an example in arcuate slot 40 as shown in FIG FIG. 3 can be achieved, which in an embodiment of the present invention proposed contacting element 10 as bulk material, the individual preferably not designed as contact springs contacting elements 10 interlock, so that easier handling during the assembly process is made possible.
  • the contacting element 10 proposed according to the invention is generally fed into the assembly process by vibratory conveyors, so that any possible entanglement of the contacting elements 10 would have enormous disadvantages, the occurrence of disturbances being considerably reduced by the geometry of the contacting element 10 proposed according to the invention.
  • the inventively proposed arrangement with the contacting element designed as a contact element can - as in the above context with the description of FIGS. 1 .
  • a contact spring for contacting a printed circuit board 48, such as for connecting an electrically commutated air conditioning blower in the automotive field, or in any application inside and outside the automotive sector, in which an electrical connection is required, and so
  • a printed circuit board 48 such as for connecting an electrically commutated air conditioning blower in the automotive field, or in any application inside and outside the automotive sector, in which an electrical connection is required, and so
  • household applications such as washing machines, dryers, dishwashers and the like
  • hybrid applications such as e-bike or hybrid applications in vehicles with internal combustion engine and at least one electric motor to be contacted electric motor.

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  • Coupling Device And Connection With Printed Circuit (AREA)

Description

Stand der TechnikState of the art

Aus DE 70 180 78.8 ist eine Kontaktfeder für Leiterplatten bekannt. Die Kontaktfeder ist selbsthaltend als einteilige Kontaktfeder ausgebildet und umfasst zwei Federschenkel sowie eine Basis zwischen den Federschenkeln, zum Einsetzen in einen Durchbruch einer Leiterplatte. Die Halterung der Kontaktfeder an der Leiterplatte erfolgt durch ein federndes Hintergreifen von an den Federschenkeln der Kontaktfeder angeformten Nocken, wobei durch entsprechende Ausbildung der Nockenkante eine Anpressung der Leiterplatte zwischen Basis und Nocken gewährleistet ist.
DE 296 17 905 U1 bezieht sich ebenfalls auf eine Leiterplatte mit einer Kontaktfeder. Es wird ein elektrischer Verbinder zum lösbaren Kontakteingriff einer Leiterplatte mit einem elektronischen oder elektromechanischen Bauelement offenbart, der eine Kontaktfeder umfasst, welche wenigstens eine Kontaktfläche für den lösbaren Kontakteingriff aufweist. An einen Gegenkontakt schmiegen sich zwei Kontaktfederschenkel an, die an einer Kontaktfederbasis federnd aufgenommen sind. DE-U-9205698.9 bezieht auf eine Kontaktierung eines innerhalb einer Fernsprechstation angeordneten Lautsprechers mit einer innerhalb der Fernsprechstation vorgesehenen Leiterplatte.
Die hier offenbarte Kontaktfeder umfasst zwei parallel zur Leiterplatte verlaufende Arme. Entlang einer linienförmigen Kontaktstelle wird die Kontaktierung dargestellt. In einer Ausführungsvariante könnte freie Endbereiche der parallel zur Leiterplatte verlaufenden Arme abgewinkelt ausgebildet sein.Out DE 70 180 78.8 is known a contact spring for printed circuit boards. The contact spring is self-holding formed as a one-piece contact spring and comprises two spring legs and a base between the spring legs, for insertion into a breakthrough of a printed circuit board. The holder of the contact spring on the circuit board is effected by a resilient engaging behind of the spring legs of the contact spring molded cam, which is ensured by appropriate design of the cam edge pressing the circuit board between the base and cam.
DE 296 17 905 U1 also refers to a printed circuit board with a contact spring. Disclosed is an electrical connector for releasably contacting a circuit board with an electronic or electromechanical device comprising a contact spring having at least one contact surface for the releasable contact engagement. At a mating contact nestle two contact spring leg, which are resiliently received on a contact spring base. DE-U-9205698.9 refers to contacting a loudspeaker located within a telephone station with a circuit board provided within the telephone station.
The contact spring disclosed here comprises two arms extending parallel to the printed circuit board. Along a linear contact point, the contact is shown. In one embodiment, free end portions of the arms extending parallel to the printed circuit board could be angled.

DE 101 22 596 A1 bezieht sich auf einen Kontaktträger zur Steckkontaktierung von Bauelementen sowie auf einen Bauelementeträger zum Aufstecken von Bauelementen. Der Kontaktträger umfasst eine bauelementseitige Trägeroberseite und eine Trägerunterseite sowie zumindest eine Leiterbahn oder einer Anzahl von Durchgangslöchern, durch die jeweils ein mit der Leiterbahn kontaktiertes Kontaktelement gesteckt ist, das über die Trägerunterseite hervorsteht und für die Aufnahme eines Steckkontaktelementes des jeweiligen Bauelementes dient. Das Kontaktelement liegt mit zumindest eine mit der Leiterbahn kontaktierten Kontaktlasche auf der Trägeroberseite auf. Das Kontaktelement umfasst ein mit der Kontaktlasche verbundenes und über die Trägerunterseite überstehendes Klemmkontaktteil für das jeweilige Steckkontaktelement. Das Kontaktelement ist bevorzugt als Stanzbiegeteil ausgeführt und einstückig beschaffen.
DE 34 36 119 A1 bezieht sich auf ein Kontaktfederelement zum Kontaktieren von Leiterplatten. Dadurch wird eine elektrisch leitende Verbindung zwischen einem Trägerteil und einer Leiterplatte bzw. einem Blechteil mittels einer am Rand der Trägerplatte federnd angeordneten Kontaktklammer ermöglicht. Die einstückig ausgebildete Kontaktklammer weist ein verrastbares Fußteil mit darauf angeordnetem Kontaktteil mit mehreren gegenüberliegenden Kontaktfederlappen zur dazwischen liegenden Aufnahme der Leiterplatte oder des Blechteiles auf. Der Fußteil umfasst im verrasteten Zustand eine im Trägerteil vorgesehene Aufnahmekante und greift über eine Federnase in eine im Abstand zur Aufnahmekante angeordnete Rastöffnung des Trägerteiles ein. DE 101 22 596 A1 refers to a contact carrier for plug contacting of components as well as to a component carrier for attaching components. The contact carrier comprises a component-side carrier top side and a carrier underside and at least one conductor track or a number of through holes through which a contact element contacted with the conductor track is inserted, which projects beyond the carrier underside and serves to receive a plug contact element of the respective component. The contact element lies with at least one contacted with the conductor contact strap on the carrier top. The contact element comprises a terminal connected to the contact tab and over the underside of the carrier protruding clamping contact part for the respective plug-in contact element. The contact element is preferably designed as a stamped and bent part and procure one piece.
DE 34 36 119 A1 refers to a contact spring element for contacting printed circuit boards. As a result, an electrically conductive connection between a carrier part and a printed circuit board or a sheet metal part is made possible by means of a resiliently arranged on the edge of the carrier plate contact clip. The integrally formed contact clip has a latchable foot with arranged thereon contact part with a plurality of opposite contact spring tabs for receiving therebetween the circuit board or the sheet metal part. The foot part comprises, in the locked state, a receiving edge provided in the carrier part and engages via a spring lug in a latching opening of the carrier part arranged at a distance from the receiving edge.

Aus der FR 2 506 526 ist eine Anordnung gemäss den Oberbegriff des Anspruchs 1 bekannt, welche eine Leiterplatte mit einem Ausschnitt, in welchem ein Kontaktierungselement angeordnet ist, sowie einen Kontaktstift umfasst. Zum Herstellen einer Kontaktierung wird dabei der Kontaktstift in das Kontaktierungselement eingeführt.
Ergänzend zu den oben stehend angeführten Offenbarungen sind aus dem Stand der Technik verschiedene Kontaktierungsmöglichkeiten für eine Leiterplatte bekannt. Dazu sind Einpresspins, Lötkontakte, Direktsteckverbindungen, Kontaktpads, Leitgummis und dergleichen zu zählen.From the FR 2 506 526 an arrangement according to the preamble of claim 1 is known, which comprises a printed circuit board with a cutout, in which a contacting element is arranged, and a contact pin. For making a contact while the contact pin is inserted into the contacting element.
In addition to the disclosures listed above, various contacting possibilities for a printed circuit board are known from the prior art. These include Einpastepins, solder contacts, direct connectors, contact pads, conductive rubbers and the like.

Darstellung der ErfindungPresentation of the invention

Es wird eine Anordnung vorgeschlagen, welche eine Leiterplatte und einen Kontaktstift und ein Kontaktierungselement, ausgebildet als Kontaktfeder, mit federnd ausgebildeten Kontaktfedernschenkeln, die eine Kontaktfläche eines Kontaktstiftes kontaktieren, umfasst. Die Leiterplatte ist mit mindestens einem Leiterplattenausschnitt versehen, in dem das Kontaktierungselement angeordnet ist und zwischen der Leiterplatte, dem Kontaktstift und dem Kontaktierungselement sind mehrere elektrisch leitfähige Kontaktierungen ausgebildet sind, wobei die Kontaktfederschenkel aufgebogene Enden aufweisen, die eine Biegekante oder Biegelinie mit definierten Kontaktstellen aufweisen, die eine Kontaktierung zu Pads der Leiterplatte bilden, wobei das Kontaktierungselement einander gegenüberliegende Kontaktfederschenkel aufweist, in welchen jeweils mindestens eine Kontaktfederzunge ausgeführt ist, die durch Schlitzung ausgebildet ist, wobei die mindestens eine Kontaktfederzunge ein gebogenes Ende aufweist, das die Einführung des Kontaktstiftes erleichtert.
Erfindungsgemäß weist die mindestens eine Kontaktfederzunge eine Prägung auf, die eine Stirnfläche eines Leiterplattenausschnittes elektrisch leitfähig kontaktiert.An arrangement is proposed which comprises a printed circuit board and a contact pin and a contacting element, designed as a contact spring, with spring-trained contact spring legs which contact a contact surface of a contact pin. The printed circuit board is provided with at least one printed circuit board cutout, in which the contacting element is arranged and between the printed circuit board, the contact pin and the contacting element, a plurality of electrically conductive contacts are formed, wherein the contact spring legs have bent ends having a bending edge or bending line with defined contact points, which form a contact with pads of the printed circuit board, wherein the contacting element has opposing contact spring legs, in each of which at least one contact spring tongue is formed, which is formed by slotting, wherein the at least one contact spring tongue has a bent end, which facilitates the insertion of the contact pin.
According to the invention, the at least one contact spring tongue has an embossing which electrically conductively contacts an end face of a printed circuit board cutout.

Das Kontaktierungselement ist federnd ausgebildet und stellt mehrere definierte Auflagepunkte zwischen der Leiterplatte und dem Kontaktierungselement wie dem durch diesen zu kontaktierenden Kontakt bereit.
Durch die erfindungsgemäß vorgeschlagene Erhöhung der Anzahl der Kontaktstellen werden einerseits Übergangswiderstände reduziert und andererseits die Stromtragfähigkeit des erfindungsgemäß vorgeschlagenen Kontaktierungselementes erheblich verbessert. Des Weiteren kann durch die erfindungsgemäß vorgeschlagene Lösung erreicht werden, dass diese eine geringere Empfindlichkeit gegenüber einer Verdrehung des Kontaktpartners aufweist und deshalb eine geringere Toleranzempfindlichkeit gegenüber den bekannten Lösungen aufweist.
Des Weiteren kann durch die erfindungsgemäß vorgeschlagene Lösung eine genauere Positionierung des Kontaktierungselementes, welches mehrere definierte Auflagepunkte bzw. Auflagelinien mit der Oberfläche und Stirnseiten einer Leiterplatte ermöglicht, in Bezug auf den Kontaktpartner erreicht werden.The contacting element is resilient and provides a plurality of defined contact points between the printed circuit board and the contacting element, such as the contact to be contacted by it.
The inventively proposed increase in the number of contact points on the one hand reduces contact resistance and on the other hand significantly improves the current carrying capacity of the invention proposed contacting element. Furthermore, it can be achieved by the solution proposed according to the invention that it has a lower sensitivity to twisting of the contact partner and therefore has a lower tolerance sensitivity compared with the known solutions.
Furthermore, by means of the solution proposed according to the invention, a more accurate positioning of the contacting element, which permits a plurality of defined contact points or support lines with the surface and end sides of a printed circuit board, can be achieved with respect to the contact partner.

Bei dem Kontaktierungselement erstrecken sich im Wesentlichen einander gegenüberliegend Kontaktfederschenkel, in denen mindestens eine Kontaktfederzunge ausgebildet ist. Die einander gegenüberliegend ausgebildeten Kontaktfederschenkel des erfindungsgemäß vorgeschlagenen Kontaktierungselementes weisen an ihrem oberen Ende jeweils abgebogene Kontaktfederschenkelausläufe auf. In diesen etwa um 90° in Bezug auf die Kontaktfederschenkel abgewinkelten Kontaktfederschenkelausläufe sind Aufbiegungen angeordnet. Die Aufbiegungen können beispielsweise durch Prägen von definierten Kontaktstellen auf einer linienförmig verlaufenden Biegekante in dem Kontaktfederschenkel-Auslauf vorgesehen werden. Dadurch ergibt sich ein an der Unterseite des Kontaktfederschenkel-Auslaufes verlaufender Kontaktierungsbereich, so dass das unter diesem auf der Oberfläche der Leiterplatte angeordnete Kontaktierungspad in geringerem Platzbedarf ausgebildet werden kann. Durch die erfindungsgemäß vorgeschlagene Lösung mit definierten Kontaktstellen, seien sie in Punkt- oder Linienform, kann eine scharfkantige Auflage der Kontaktfeder-Ausläufe auf der Oberseite der Leiterplatte vermieden werden, durch welche ein Abrieb der Oberflächenbeschichtung der Leiterplatte erfolgen könnte. Diese Beeinträchtigung ist durch die erfindungsgemäß vorgeschlagene Lösung definitiv ausgeschlossen. Gemäss der Erfindung umfassen die im Wesentlichen einander gegenüberliegend angeordneten, federnd ausgebildeten Kontaktfederschenkel Schlitzungen, welche Kontaktfederzungen definieren. Die Kontaktfederzungen sind am Ende nach außen gebogen, um ein sicheres Einführen des Kontaktstiftes zu gewährleisten. Durch die Schlitzung lässt sich ein Toleranzausgleich gegen Verdrehung des erfindungsgemäß vorgeschlagenen Kontaktfederelementes in Bezug auf seine Arretierungsposition in einem Leiterplattenausschnitt einer Leiterplatte und des Kontaktstiftes erreichen. Die einzelnen, erfindungsgemäss durch Ausbildung von Schlitzungen in den Kontaktfederschenkeln eingestanzten Kontaktfederzungen weisen Verprägungen auf, durch welche wiederum eine definierte Kontaktstelle in Punkt- oder in Linienform zwischen dem erfindungsgemäß vorgeschlagenen Kontaktierungselement und einer Berandung bzw. Stirnflächen einer zu kontaktierenden Leiterplatte bereitgestellt werden können. Durch die erfindungsgemäß vorgeschlagene Lösung lassen sich die elektrisch leitfähigen Kontaktierungsstellen zwischen dem erfindungsgemäß vorgeschlagenen Kontaktierungselement und der Leiterplatte signifikant erhöhen.In the contacting element, contact spring limbs extending essentially opposite one another extend in which at least one contact spring tongue is formed. The oppositely formed contact spring legs of the invention proposed contacting element have at their upper end respectively bent Kontaktfederschenkelausläufe. In these about 90 ° with respect to the contact spring leg angled Kontaktfederschenkelausläufe Aufbiegungen are arranged. The bends can be provided, for example, by embossing defined contact points on a linearly extending bending edge in the contact spring leg outlet. This results in a contacting region extending on the underside of the contact spring armature outlet, so that the contacting pad arranged underneath it on the surface of the printed circuit board can be formed in a smaller space requirement. By inventively proposed solution with defined contact points, they are in point or line shape, a sharp-edged edition of the contact spring outlets on the top of the circuit board can be avoided by which abrasion of the surface coating of the circuit board could take place. This impairment is definitely excluded by the solution proposed by the invention. According to the invention, the essentially oppositely arranged, resilient contact spring legs comprise slots which define contact spring tongues. The contact spring tongues are bent outwardly at the end to ensure a safe insertion of the contact pin. By slotting a tolerance compensation against rotation of the inventively proposed contact spring element with respect to its locking position in a printed circuit board cutout of a circuit board and the contact pin can be achieved. The individual, according to the invention stamped by formation of slits in the contact spring legs contact spring tongues have Verprägungen, which in turn a defined contact point in point or in line between the present invention proposed contacting element and a boundary or faces of a printed circuit board to be contacted can be provided. By the proposed solution according to the invention, the electrically conductive contact points between the inventively proposed contacting element and the circuit board can be significantly increased.

Durch die Positionierung des als Kontaktfeder ausgebildeten Kontaktierungselementes in einem Leiterplattenausschnitt, kann eine sichere Kontaktierung aller Kontaktstellen unter Berücksichtigung der in der Fertigung unweigerlich auftretenden Toleranzen gewährleistet werden. Insbesondere sind an den Unterseiten der Kontaktfederschenkel-Ausläufe Einführschrägen ausgebildet. Diese Einführschrägen dienen als Einführhilfe des bevorzugt als Kontaktfeder ausgebildeten Kontaktierungselementes beim Montageprozess. Die Einführschrägen ermöglichen die Montage des Kontaktierungselementes in einem Leiterplattenausschnitt mit Fasen bzw. Radien. Die erfindungsgemäß vorgeschlagene Lösung macht einen Stanzprozess in der Leiterplatte zur Erzeugung des Leiterplattenausschnittes wiederum überflüssig.
Durch entsprechende Ausführung der Einführschräge kann über deren Position bzw. die Anzahl von Biegungen einseitig oder mehrseitig eine Zentrierung des erfindungsgemäß vorgeschlagenen Kontaktierungselementes gegenüber dem Kontaktstift realisiert werden, so dass alle definierten Kontaktstellen des Kontaktierungselements, die für die Kontaktierung des Kontaktstiftes vorgesehen sind, sicher auf dem Kontaktstift positioniert sind.By positioning the contacting element designed as a contact element in a printed circuit board cutout, a secure contacting of all contact points can be ensured, taking into account the tolerances that inevitably occur in production. In particular, insertion bevels are formed on the undersides of the contact spring leg outlets. These insertion bevels serve as insertion aid of the contacting element preferably designed as a contact spring during the assembly process. The insertion bevels allow the mounting of the contacting element in a printed circuit board cutout with chamfers or radii. The proposed solution according to the invention makes a punching process in the circuit board for the production of printed circuit board cut unnecessary.
By appropriate design of the insertion can be realized via the position or the number of bends one-sided or multi-sided centering of the invention proposed Kontaktierungselementes against the contact pin, so that all defined contact points of the contacting, which are provided for contacting the contact pin securely on the Contact pin are positioned.

Das Kontaktierungselement, das als Kontaktfeder ausgebildet ist, weist gestanzte oder auf andere Weise gefertigte Schlitzungen auf, durch welche in den im Wesentlichen einander gegenüberliegend angeordneten Kontaktfederschenkeln Kontaktfederzungen erzeugt werden. Diese wiederum ermöglichen eine Verteilung des Stromes auf mehrere Kontaktfederzungen und damit in vorteilhafter Weise eine Reduzierung des Übergangswiderstandes und somit eine Erhöhung der Stromtragfähigkeit des erfindungsgemäß vorgeschlagenen Kontaktierungselementes. Die mindestens eine Kontaktfederzunge bietet des Weiteren einen Toleranzausgleich gegen eine Verdrehung des erfindungsgemäß vorgeschlagenen Kontaktierungselementes relativ zu seiner Einbauposition im Leiterplattenausschnitt der Leiterplatte. Eine größere Anzahl von Kontaktzungen, die beispielsweise in die Seitenwände der Kontaktfederschenkel des Kontaktierungsfederelementes eingestanzt werden ermöglicht diesen vorteilhaften Effekt.
In einer weiteren vorteilhaften Ausgestaltung der der Erfindung zugrundeliegenden Lösung können die Schlitzungen, die im Wesentlichen einander gegenüberliegenden Kontaktfederschenkeln verlaufenden Kontaktfederzungen in Bogenform ausgebildet werden. Dies erlaubt eine leichtere Handhabung für den Fall, dass die erfindungsgemäß vorgeschlagene Kontaktierungselemente als Schüttgut hergestellt werden, so dass bei dessen Handhabung gemäß dieser vorteilhaften Ausführungsvariante der erfindungsgemäß vorgeschlagenen Lösung ein Verhaken einzelner Kontaktierungselemente miteinander vermieden werden kann.The contacting element, which is designed as a contact spring, has punched or otherwise manufactured slits through which contact spring tongues are produced in the substantially oppositely arranged contact spring legs. These in turn allow a distribution of the current to a plurality of contact spring tongues and thus advantageously a reduction of the contact resistance and thus an increase in the current carrying capacity of the inventively proposed contacting element. The at least one contact spring tongue further offers a tolerance compensation against a rotation of the contact element proposed according to the invention relative to its installation position in the printed circuit board cutout of the printed circuit board. A larger number of contact tongues, which are punched, for example, in the side walls of the contact spring legs of Kontaktierungsfederelementes allows this advantageous effect.
In a further advantageous embodiment of the invention of the underlying solution, the slits, the substantially opposing contact spring legs extending contact spring tongues can be formed in an arc shape. This allows easier handling in the event that the contacting elements proposed according to the invention are produced as bulk material, so that at its handling according to this advantageous embodiment of the solution proposed by the invention a hooking individual contacting elements can be avoided each other.

Vorteile der ErfindungAdvantages of the invention

Die Ausführung der Prägung an den Federschenkeln an der Außenseite des Kontaktelementes ist so gestaltet, dass die Fügekräfte in die Leiterplatte minimiert sind. Dies wiederum hat den Vorteil, dass die Belastungen im Bereich der Ausbrüche in der Leiterplatte minimal bleiben und somit die Tabuzonen reduziert werden können, was wiederum ein Bauraumminimum bei einem einfachen manuellen oder halbmanuellen Bestückungsprozess ermöglicht. Des Weiteren reduziert dieser Art der Ausführung der Prägung den Abrieb der Oberflächenbeschichtung der Leiterplatte und des Kontaktierungselementes beim Fügeprozess erheblich. Dies wiederum ist sehr bedeutsam für einen dauerhaft niedrigen Übergangswiderstand über die Lebensdauer gesehen.The execution of the embossing on the spring legs on the outside of the contact element is designed so that the joining forces are minimized in the circuit board. This in turn has the advantage that the burdens in the area of the breakouts in the circuit board remain minimal and thus the Tabuzonen can be reduced, which in turn allows a minimum installation space in a simple manual or semi-manual assembly process. Furthermore, this type of execution of the embossing significantly reduces the abrasion of the surface coating of the printed circuit board and of the contacting element during the joining process. This, in turn, is very important for a durable low contact resistance over the lifetime seen.

Durch entsprechende Anordnung der definierten Kontaktierungsstellen, insbesondere definierte Kontaktierungspunkte auf der Innenseite der Kontaktfederschenkel sowie Kontaktfederzungen des Kontaktierungselementes wird erreicht, dass die Fügekräfte des Steckkontaktelementes auf ein Minimum reduziert werden. Diese reduzierten Fügekräfte haben die gleichen Vorteile wie die zuvor beschriebenen hinsichtlich des Bauraums einer geringen Belastung beim Fügen sowie geringen Oberflächenabriebes beim Fügen.By appropriate arrangement of the defined contact points, in particular defined contact points on the inside of the contact spring leg and contact spring tongues of the contacting is achieved that the joining forces of the plug contact element are reduced to a minimum. These reduced joining forces have the same advantages as those described above with regard to the installation space of a low load during joining and low surface abrasion during joining.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Anhand der Zeichnung wird die Erfindung nachstehend eingehender beschrieben.With reference to the drawing, the invention will be described below in more detail.

Es zeigt:

Figur 1
eine perspektivische Darsicht eines Kontaktierungselementes der erfindungsgemässen Anordnung,
Figur 2
eine Seitenansicht der erfindungsgemäß vorgeschlagenen Anordnung umfassend das Kontaktierungselement, welches eine Leiterplatte an mehreren Kontaktierungsstellen elektrisch leitfähig kontaktiert und
Figur 3
eine um 90° gedrehte Seitenansicht der erfindungsgemäss vorgeschlagenen Anordnung. Vergleich zur dessen Darstellung in Figur 2.
It shows:
FIG. 1
a perspective view of a contacting element of the inventive arrangement,
FIG. 2
a side view of the proposed arrangement according to the invention comprising the contacting element, which electrically conductively contacts a printed circuit board at a plurality of contacting points and
FIG. 3
a rotated by 90 ° side view of the proposed arrangement according to the invention. Comparison to its representation in FIG. 2 ,

Ausführungsvariantenvariants

Eine erfindungsgemäss vorgeschlagene Anordnung umfassend ein Kontaktfeder ausgebildetes Kontaktierungselement 10 wird nachfolgend im Zusammenhang mit der elektrischen Kontaktierung einer Leiterplatte für die erhöhten Anforderungen an elektrische Kontaktierungen, z.B. in Automobilanwendungen beschrieben. Durch die erfindungsgemäß vorgeschlagene Anordnung mit dem Kontaktierungselement 10 können beispielsweise Klimagebläse oder andere elektrische Verbraucher im Automobilbereich kontaktiert werden. Die Anwendungsmöglichkeit der erfindungsgemäß vorgeschlagenen Anordnung mit dem Kontaktierungselement 10 ist jedoch innerhalb und außerhalb des Automobilbereiches möglich, so zum Beispiel bei der elektrischen Verbindungstechnik beispielsweise bei Haushaltsgeräten, wie zum Beispiel Waschmaschinen, Geschirrspülern oder dergleichen sowie beispielsweise im Bereich von Fahrradanwendungen, wie E-Bike oder auch Hybridfahrzeuge mit elektromotorischem und verbrennungsmotorischem Antrieb.
Figur 1 zeigt in perspektivischer Ansicht ein insbesondere als Kontaktfeder ausgebildetes Kontaktierungselement.
Wie sich Figur 1 entnehmen lässt, umfasst ein insbesondere als Kontaktfeder ausgebildetes Kontaktierungselement 10 zwei im Wesentlichen einander gegenüberliegend angeordnete, konturierte Kontaktfederschenkel 20. In den beiden einander gegenüberliegend orientierten Kontaktfederschenkeln 20, ist mindestens eine Kontaktfederzunge 12 ausgebildet. Die mindestens eine Kontaktfederzunge 12 weist ein gebogenes Endstück 14 auf. Die Kontaktfederzungen 12 sind durch Schlitzungen 16, die wie in Figur 1 schematisch dargestellt, gerade verlaufen können oder wie Figur 3 entnehmbar ist, in Bogenform 42 verlaufen können, ausgebildet. Die mindestens eine Kontaktfederzunge 12 in einem jeden der Kontaktfederschenkeln 20 kann beispielsweise im Wege des Ausstanzens 18 gefertigt werden, wobei in einer jeden der mindestens einen Kontaktfederzunge 12 jeweils eine Prägung 46 (vergleiche Darstellung gemäß Figur 2) erzeugt wird. Auf die Prägung 46 in der mindestens einen Kontaktfederzunge 12 wird nachfolgend noch näher eingegangen. Wie der perspektivischen Darstellung gemäß Figur 1 zu entnehmen ist, sind die beiden im Wesentlichen einander gegenüberliegend kontaktierten Kontaktfederschenkel 20 über einen Boden 54 federnd miteinander verbunden. Beide Kontaktfederschenkel 20 erstrecken sich im Wesentlichen, ausgehend vom Boden 54, in vertikale Richtung und laufen an ihrem oberen Ende im Wesentlichen in 90°-Winkel orientierten Kontaktfederschenkel-Ausläufen 22 aus. In den Kontaktfederschenkel-Ausläufen 22 sind, wie in Figur 1 angedeutet, definierte Kontaktstellen 26a und 26b angeordnet. Dadurch wird erreicht, dass die Kontaktfederschenkel-Ausläufe 22 nach oben gebogen ausgebildet sind, so dass definierte Kontaktstellen 26b einer Biegekante 26a zur Leiterplatte 48 ausgebildet werden können. Des Weiteren wird durch diese erfindungsgemäß vorgeschlagene Ausgestaltung erreicht, dass keine scharfkantig ausgebildete Auflage der Kontaktschenkel-Ausläufe 22 des erfindungsgemäß vorgeschlagenen Kontaktierungselementes 10 auf einer Oberfläche 50 der zu kontaktierenden Leiterplatte 48 auftritt und somit kein Abrieb der Oberflächenbeschichtung an der Oberfläche 50 der Leiterplatte 48 auftreten kann. Des Weiteren kann durch die durch die erfindungsgemäß vorgeschlagene Geometrie der Kontaktfederschenkel-Ausläufe 22 erreicht werden, dass die durch diese zu kontaktierenden Pads 28 auf der Oberfläche 50 der elektrisch zu kontaktierenden Leiterplatte 48 hinsichtlich ihres Platzbedarfes in reduzierter Größe ausgebildet werden können.
Der perspektivischen Darstellung gemäß Figur 1 ist des Weiteren zu entnehmen, dass die mindestens eine im Kontaktfederschenkel 20 ausgebildete Kontaktfederzunge 12 mit einem gebogenen Ende 14 versehen ist, was eine Einführungshilfe für einen beispielsweise stiftförmig ausgebildeten Kontaktstift 30 (vergleiche Darstellung gemäß Figur 2) darstellt.An inventively proposed arrangement comprising a contact spring trained contacting element 10 is described below in connection with the electrical contacting of a printed circuit board for the increased demands on electrical contacts, eg in automotive applications. By inventively proposed arrangement with the contacting element 10, for example, Klimagebläse or other electrical consumers in the automotive sector can be contacted. The application of the proposed arrangement according to the invention with the contacting element 10, however, is possible inside and outside the automotive sector, for example in the electrical connection technology, for example in household appliances, such as washing machines, dishwashers or the like, and for example in the field of bicycle applications, such as e-bike or also hybrid vehicles with electric motor and internal combustion engine drive.
FIG. 1 shows a perspective view of a particular trained as a contact spring contacting element.
Like yourself FIG. 1 In the two oppositely oriented contact spring legs 20, at least one contact spring tongue 12 is formed, a contacting element 10 designed in particular as a contact spring comprises two contoured contact spring limbs 20 arranged essentially opposite one another. The at least one contact spring tongue 12 has a bent end piece 14. The contact spring tongues 12 are through slits 16, as in FIG. 1 shown schematically, can run straight or as FIG. 3 is removable, can extend in an arcuate shape 42, formed. The at least one contact spring tongue 12 in each of the contact spring legs 20 can be made for example by means of punching 18, wherein in each of the at least one contact spring tongue 12 each have an embossment 46 (see illustration according to FIG FIG. 2 ) is produced. On the Embossment 46 in the at least one contact spring tongue 12 will be discussed in more detail below. As the perspective view according to FIG. 1 can be seen, the two substantially contacted opposite each other contact spring leg 20 are resiliently connected together via a bottom 54. Both contact spring leg 20 extend substantially, starting from the bottom 54 in the vertical direction and run at its upper end substantially in 90 ° angle oriented Kontaktfederschenkel spouts 22 from. In the contact spring leg outlets 22 are, as in FIG. 1 indicated, defined contact points 26a and 26b arranged. This ensures that the contact spring leg outlets 22 are formed bent upward, so that defined contact points 26b of a bending edge 26a to the circuit board 48 can be formed. Furthermore, it is achieved by this embodiment proposed according to the invention that no sharp-edged support of the contact leg outlets 22 of the inventively proposed contacting element 10 occurs on a surface 50 of the printed circuit board 48 to be contacted and thus no abrasion of the surface coating on the surface 50 of the circuit board 48 can occur , Furthermore, it can be achieved by the geometry of the contact spring leg outlets 22 proposed by the invention that the pads 28 to be contacted by these can be formed on the surface 50 of the printed circuit board 48 to be electrically contacted with regard to their space requirement in reduced size.
The perspective view according to FIG. 1 Furthermore, it can be seen that the at least one contact spring leg 20 formed in the contact spring tongue 12 is provided with a bent end 14, which is an introduction aid for a pin-shaped contact pin 30, for example (see FIG. 2 ).

Figur 2 ist eine Seitenansicht der erfindungsgemäß vorgeschlagenen Anordnung umfassend ein Kontaktelement, ausgebildet als Kontaktfeder zu entnehmen. Figur 2 lässt sich entnehmen, dass durch das als Kontaktfeder ausgebildete Kontaktierungselement 10 die hier erfindungsgemäss dargestellte Leiterplatte 48 an einer Mehrzahl von Kontaktierungsstellen elektrisch leitfähig kontaktiert wird Figur 2 zeigt, dass beispielsweise die Kontaktfederschenkel-Ausläufe 22 an der Oberseite der im Wesentlichen gegenüberliegend zueinander orientierten Kontaktfederschenkel 20 die Oberfläche 50 der Leiterplatte 48 an Pads 28 sowie dem Leiterplattenausschnitt 34 kontaktieren. Dazu werden definierte Kontaktstellen 26b entlang der Biegekante 26a angeordnet, so dass ein elektrisch leitfähiger Kontakt mit einem reduzierten Platzbedarf zwischen den an der Unterseite der an den Kontaktfederschenkel-Ausläufen 22 angeordneten definierten Kontaktstellen 26b und den Pads 28, die sich an der Oberseite 50 der elektrisch zu kontaktierenden Leiterplatte 48 befinden, erzeugt wird. FIG. 2 is a side view of the inventively proposed arrangement comprising a contact element, designed to be taken as a contact spring. FIG. 2 It can be seen that the printed circuit board 48 shown here in accordance with the invention is electrically conductively contacted at a plurality of contacting points by the contacting element 10 designed as a contact spring FIG. 2 shows that, for example, the contact spring leg outlets 22 at the top of substantially oppositely oriented to each other Kontaktfederschenkel 20 the Contact surface 50 of the circuit board 48 to pads 28 and the printed circuit board cutout 34. For this purpose, defined contact points 26 b are arranged along the bending edge 26 a, so that an electrically conductive contact with a reduced space between the arranged at the bottom of the Kontaktfederschenkel spouts 22 defined contact points 26 b and the pads 28, located at the top 50 of the electrically are to be contacted circuit board 48 is generated.

Des Weiteren geht aus der Seitenansicht gemäß Figur 2 hervor, dass die mindestens eine Kontaktfederzunge 12, die in den einander gegenüberliegend orientierten Kontaktfederschenkeln 20 ausgebildet ist, Prägungen 46 aufweist. Die Prägungen 46 kontaktieren die Leiterplatte 48 im Bereich von Stirnflächen 44 eines Leiterplattenausschnittes 34. Dadurch sind weitere elektrisch leitfähige Kontaktierungen, d.h. die erfindungsgemäß vorgeschlagene Erhöhung der Anzahl elektrisch leitfähiger Kontaktierungsstellen zwischen dem Kontaktierungselement 10 und einer hier beispielsweise dargestellten Leiterplatte 48 realisiert. Durch die Ausbildung von mindestens einer Kontaktfederzunge 22 im Kontaktfederschenkel 20 wird der verbleibende Teil des Kontaktfederschenkels 20 selbst mit der Funktion einer Kontaktfederzunge ausgebildet. Der Kontaktfederschenkel wird vorteilhafterweise dann selbst an den entsprechenden Stellen mit Prägungen 56, 58 versehen, um eine definierte Kontaktierung zu erzielen. Die erste Prägung 56 der Kontaktfederschenkel 20 kontaktiert den Kontaktstift 30. Die zweite Prägung 58 der Kontaktfederschenkel 20 kontaktiert die Leiterplatte 48 im Übergang der Stirnfläche 44 eines Leiterplattenausschnittes 34 und der Oberfläche 50 der Leiterplatte 48.Furthermore, goes from the side view FIG. 2 shows that the at least one contact spring tongue 12, which is formed in the oppositely oriented contact spring legs 20, embossments 46 has. The embossings 46 contact the printed circuit board 48 in the region of end faces 44 of a printed circuit board cutout 34. As a result, further electrically conductive contacts, ie, the inventively proposed increase in the number of electrically conductive contacting points between the contacting element 10 and a circuit board 48 shown here, for example, realized. Due to the formation of at least one contact spring tongue 22 in the contact spring leg 20, the remaining part of the contact spring leg 20 itself is formed with the function of a contact spring tongue. The contact spring leg is then advantageously even at the appropriate places with embossing 56, 58 provided in order to achieve a defined contact. The first embossing 56 of the contact spring legs 20 contacts the contact pin 30. The second embossing 58 of the contact spring legs 20 contacts the printed circuit board 48 in the transition of the end face 44 of a printed circuit board cutout 34 and the surface 50 of the printed circuit board 48.

Je nachdem, wie viele Kontaktfederzungen 12 in den einander gegenüberliegend orientierten Kontaktfederschenkeln 20 ausgebildet werden, eine umso höhere Anzahl elektrischer Kontaktierungsstellen werden zwischen dem in den Leiterplattenausschnitt 34 der Leiterplatte 48 eingeschobenen Kontaktierungselement 10 und der Leiterplatte 48 erzeugt. Durch eine Erhöhung der elektrischen Kontaktierungsstellen zwischen beispielsweise der Leiterplatte 48 und dem Kontaktierungselement 10 lässt sich die Reduzierung des Übergangswiderstandes und die Erhöhung der Stromtragfähigkeit des erfindungsgemäß vorgeschlagenen Kontaktierungselementes 10 nochmals verbessern. Je mehr elektrisch leitfähige Kontaktierungsstellen zwischen dem erfindungsgemäß vorgeschlagenen Kontaktierungselements 10 und der Leiterplatte 48 vorliegen, desto unempfindlicher ist diese Kontaktierung gegenüber Verdrehung einer der beiden Kontaktpartner, sei es der Leiterplatte 48, sei es dem Kontaktierungselement 10 oder dem Kontaktstift 30. Durch die erfindungsgemäß vorgeschlagene Lösung wird zudem erreicht, dass eine genauere Positionierung des Kontaktierungselementes 10 in Bezug auf die Leiterplatte 48 und den Kontaktstift 30 erreicht werden kann.Depending on how many contact spring tongues 12 are formed in the oppositely oriented Kontaktfederschenkeln 20, a higher number of electrical contact points are generated between the inserted into the printed circuit board cutout 34 of the printed circuit board 48 contacting element 10 and the circuit board 48. By increasing the electrical contacting points between, for example, the printed circuit board 48 and the contacting element 10, the reduction of the contact resistance and the increase in the current carrying capacity of the contacting element 10 proposed according to the invention can be further improved. The more electrically conductive contacting points between the inventively proposed contacting element 10 and the printed circuit board 48 are present, the less sensitive is this contacting against rotation of one of the two contact partners, be it the circuit board 48, be it the contacting element 10 or the contact pin 30 According to the invention proposed solution is also achieved that a more accurate positioning of the contacting element 10 with respect to the circuit board 48 and the contact pin 30 can be achieved.

Figur 3 ist eine weitere Ansicht der erfindungsgemäß vorgeschlagenen Anordnung mit dem Kontaktierungselement im in einen Leiterplattenausschnitt einer Leiterplatte montierten Zustand zu entnehmen.
Figur 3 zeigt, dass beispielsweise im Übergangsbereich zwischen den gebogenen Kontaktfederschenkel-Ausläufen 22 der beiden einander gegenüberliegend angeordneten Kontaktfederschenkel 20 Einführschrägen 36 ausgebildet sind. Die Einführschrägen 36 dienen als Einführhilfe und zur Positionierung im Leiterplattenausschnitt 34 des erfindungsgemäß vorgeschlagenen Kontaktierungselementes 10 beim Montageprozess, d.h. beim Einführen des Kontaktierungselementes 10 in einen Leiterplattenausschnitt 34 einer elektrisch zu kontaktierenden Leiterplatte 48. Die Einführschräge 36 und die Biegung erlauben es, das erfindungsgemäß vorgeschlagene, insbesondere als Kontaktfeder ausgebildete Kontaktierungselement 10 in dem Leiterplattenausschnitt 34, an dem Radien ausgebildet sind, zu verbauen.
Die Möglichkeit, durch die Einführschräge 36, das erfindungsgemäß vorgeschlagene Kontaktierungselement 10 in dem Leiterplattenausschnitt 34 an dem Radien ausgebildet sind zu verbauen, macht einen Stanzprozess zur Erzeugung des Leiterplattenausschnittes 34 überflüssig. Bei einer entsprechenden Ausführung der Einführschrägen 36 in Bezug auf deren Position, Anzahl Biegungen, die einseitiger oder mehrseitiger ausgebildet sein können, kann eine Zentrierung des Kontaktierungselementes 10 in Bezug auf den zu kontaktierenden Kontaktstift 30 gewährleistet werden.
Wie der Darstellung gemäß Figur 3 entnommen werden kann, ist in dem hier in der Zeichenebene dargestellten Kontaktfederschenkel 20 eine Kontaktfederzunge 12 ausgeführt. Diese ist durch Materialentnahme in Form einer bogenförmigen Schlitzung 40 federnd in Bezug auf das verbleibende Material des in Figur 3 in der Zeichenebene dargestellten Kontaktfederschenkels 20 beschaffen. Durch die hier in Figur 3 beispielhaft dargestellten bogenförmigen Schlitzungen 40 lassen sich selbstverständlich auch mehrere federnd ausgebildete Kontaktfederzungen 12 in der Wand des Kontaktfederschenkels 20 erzeugen. Je mehr bogenförmige Schlitzungen 40 im Material des Kontaktfederschenkels 20 erzeugt werden, eine desto größere Anzahl von elektrischen Kontaktstellen wird erzeugt. Dadurch wiederum kann eine Reduzierung des Übergangswiderstandes zwischen der zu kontaktierenden Leiterplatte 48 und dem erfindungsgemäß vorgeschlagenen Kontaktierungselementes 10 erfolgen, was wiederum dessen Stromtragfähigkeit signifikant erhöhen kann. Durch zusätzliche Kontaktzungen und Verlängerungen der Kontaktfeder kann der Querschnitt des Kontaktierungselementes vergrößert und damit dessen Stromtragfähigkeit gegebenenfalls erhöht werden.
In der Darstellung gemäß Figur 3 ist lediglich eine federnd ausgebildete Kontaktfederzunge 12 im Wandmaterial des Kontaktfederschenkels 20 dargestellt. Wie Figur 3 des Weiteren zeigt, verläuft die Schlitzung 40 in Bogenform. Insbesondere umgeben Schlitzungsbogen 42 eine Prägung 46, die im Material des Kontaktfederschenkels 20 ausgebildet ist, was nach Ausbildung der bogenförmigen Schlitzung 40 eine federnd ausgebildete Kontaktfederzunge 12, 38 darstellt. Diese Prägung 46, sei sie in Linienform oder sei sie - wie in Figur 3 dargestellt - in Punktform ausgebildet, stellt, vergleiche Darstellung gemäß Figur 2, eine elektrisch leitfähige Kontaktierung mit der mindestens einen Kontaktfederzunge 12, 38 und einer Stirnseite an einer Stirnfläche der Leiterplatte 48 im Leiterplattenausschnitt 34 dar. Insbesondere kann durch eine beispielsweise in Bogenform ausgebildete Schlitzung 40 gemäß der Darstellung in Figur 3 erreicht werden, was bei einer Ausbildung des erfindungsgemäß vorgeschlagenen Kontaktierungselementes 10 als Schüttgut, sich die einzelnen bevorzugt als Kontaktfedern ausgebildeten Kontaktierungselemente 10 nicht ineinander verhaken, so dass eine leichtere Handhabung beim Montageprozess ermöglicht wird. Das erfindungsgemäß vorgeschlagene Kontaktierungselement 10 wird in der Fertigung in der Regel durch Rüttelförderer dem Montageprozess zugeführt, so dass ein möglicherweise auftretendes Verhaken der Kontaktierungselemente 10 enorme Nachteile hätte, wobei das Auftreten von Störungen durch die Geometrie des erfindungsgemäß vorgeschlagenen Kontaktierungselementes 10 erheblich herabgesetzt ist. Die erfindungsgemäß vorgeschlagene, Anordnung mit dem als Kontaktfeder ausgebildeten Kontaktierungselement kann - wie im obenstehenden Zusammenhang mit der Beschreibung der Figuren 1, 2 und 3 beschrieben - als Kontaktfeder zur Kontaktierung einer Leiterplatte 48 eingesetzt werden, so zum Beispiel zum Anschluss eines elektrisch kommutierten Klimagebläses im Automobilbereich, oder auch bei jedweder Applikation innerhalb und außerhalb des Automobilbereiches, bei der eine elektrische Verbindung erforderlich ist, und so auch zum Beispiel bei Anwendungen im Haushaltsbereich, so zum Beispiel bei Waschmaschinen, Wäschetrocknern, Geschirrspülern und dergleichen oder auch bei Hybridanwendungen, so zum Beispiel E-Bike oder Hybridanwendungen bei Fahrzeugen mit Verbrennungsmotor und mindestens einem elektrisch zu kontaktierenden elektromotorischen Antrieb. FIG. 3 is a further view of the proposed arrangement according to the invention with the contacting element in the mounted in a printed circuit board cutout of a printed circuit board state.
FIG. 3 shows that, for example, in the transition region between the bent contact spring leg outlets 22 of the two oppositely arranged contact spring leg 20 insertion bevels 36 are formed. The insertion bevels 36 serve as an insertion aid and for positioning in the printed circuit board cutout 34 of the contact element 10 proposed according to the invention during the assembly process, ie during insertion of the contacting element 10 into a printed circuit board cutout 34 of a printed circuit board 48 to be electrically contacted. The lead-in bevel 36 and the bend make it possible to use the present invention, in particular formed as a contact spring contacting element 10 in the printed circuit board cutout 34, are formed on the radii to obstruct.
The possibility of obstructing by means of the insertion bevel 36, the contacting element 10 proposed according to the invention, in the printed circuit board cutout 34 at the radii makes a punching process for producing the printed circuit board cutout 34 superfluous. With a corresponding embodiment of the insertion bevels 36 with respect to their position, number of bends, which may be formed on one or more sides, a centering of the contacting element 10 with respect to the contact pin 30 to be contacted can be ensured.
As shown in the illustration FIG. 3 can be removed, a contact spring tongue 12 is executed in the contact spring leg 20 shown here in the plane of the drawing. This is by material removal in the form of an arcuate slits 40 resilient with respect to the remaining material of in FIG. 3 procure the contact spring leg 20 shown in the drawing plane. By the here in FIG. 3 arcuate notches 40 shown by way of example can of course also produce a plurality of spring-trained contact spring tongues 12 in the wall of the contact spring limb 20. The more arcuate slots 40 in the material of the contact spring leg 20th are generated, the greater the number of electrical contact points is generated. In turn, a reduction of the contact resistance between the printed circuit board 48 to be contacted and the contacting element 10 proposed according to the invention can take place, which in turn can significantly increase its current carrying capacity. By additional contact tongues and extensions of the contact spring, the cross section of the contacting element can be increased and thus its current carrying capacity can be increased if necessary.
In the illustration according to FIG. 3 only a spring-trained contact spring tongue 12 is shown in the wall material of the contact spring leg 20. As FIG. 3 further shows, the slit 40 extends in an arc shape. In particular, slit sheet 42 surround an embossment 46 formed in the material of the contact spring leg 20, which after formation of the arcuate slots 40 is a spring-formed contact spring tongue 12, 38. This imprint 46, be it in line form or be it - as in FIG. 3 illustrated - formed in dot form, represents, compare representation according to FIG. 2 , An electrically conductive contact with the at least one contact spring tongue 12, 38 and an end face on an end face of the circuit board 48 in the printed circuit board cutout 34. In particular, can be formed by an example in arcuate slot 40 as shown in FIG FIG. 3 can be achieved, which in an embodiment of the present invention proposed contacting element 10 as bulk material, the individual preferably not designed as contact springs contacting elements 10 interlock, so that easier handling during the assembly process is made possible. The contacting element 10 proposed according to the invention is generally fed into the assembly process by vibratory conveyors, so that any possible entanglement of the contacting elements 10 would have enormous disadvantages, the occurrence of disturbances being considerably reduced by the geometry of the contacting element 10 proposed according to the invention. The inventively proposed arrangement with the contacting element designed as a contact element can - as in the above context with the description of FIGS. 1 . 2 and 3 described - are used as a contact spring for contacting a printed circuit board 48, such as for connecting an electrically commutated air conditioning blower in the automotive field, or in any application inside and outside the automotive sector, in which an electrical connection is required, and so For example, in household applications, such as washing machines, dryers, dishwashers and the like or in hybrid applications, such as e-bike or hybrid applications in vehicles with internal combustion engine and at least one electric motor to be contacted electric motor.

Claims (5)

  1. Arrangement comprising a printed circuit board (48) and a contact pin (30) and a contact-making element (10) in the form of a contact spring with resilient contact spring limbs (20) which make contact with a contact area (32) of the contact pin (30), wherein the printed circuit board (48) is provided with at least one printed circuit board cutout (34) in which the contact-making element (10) is arranged and a plurality of electrically conductive contact-making means (26a, 26b, 28; 14, 48; 46, 48; 56, 58) are formed between the printed circuit board (48), the contact pin (30) and the contact-making element (10), wherein the contact spring limbs (20) have ends (24) which are bent upwards and have a bending edge or bending line (26a) with defined contact points (26b) which form a contact-making connection to pads (28) of the printed circuit board, wherein the contact-making element (10) has contact spring limbs (20) which are situated opposite one another and in each of which at least one contact spring tongue (12, 38) which is formed by a slot arrangement (16, 40) is constructed, wherein the at least one contact spring tongue (12) has a bent end (14) which facilitates the insertion of the contact pin (30), characterized in that the at least one contact spring tongue (12) has a stamped portion (46) which makes electrically conductive contact with an end face of a printed circuit board cutout (34).
  2. Arrangement according to one of the preceding claims, characterized in that, owing to the slot arrangement and the design of the contact spring tongue (12), the slotted contact spring limbs (20) themselves function as contact spring zones with a first stamped portion (56) for making contact with the printed circuit board cutout (34) and with a second stamped portion (58) for making contact with the contact pin (30).
  3. Arrangement according to either of the preceding claims, characterized in that the slot arrangement is in the form of an arcuate slot arrangement (40, 42), wherein a slot arrangement bend (42) partially surrounds the stamped portion (46).
  4. Arrangement according to one of the preceding claims, characterized in that the contact spring limbs (20) comprise insertion bevels (36).
  5. Arrangement according to one of the preceding claims, characterized in that a plurality of contact spring tongues (12) which are situated opposite one another provide tolerance compensation against twisting between the contact partners, in particular the contact-making element (10) in relation to the printed circuit board (48).
EP12725386.2A 2011-06-16 2012-05-31 Contacting elements Not-in-force EP2721695B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011077589A DE102011077589A1 (en) 2011-06-16 2011-06-16 contacting
PCT/EP2012/060305 WO2012171808A2 (en) 2011-06-16 2012-05-31 Contacting elements

Publications (2)

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EP2721695A2 EP2721695A2 (en) 2014-04-23
EP2721695B1 true EP2721695B1 (en) 2018-02-14

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EP12725386.2A Not-in-force EP2721695B1 (en) 2011-06-16 2012-05-31 Contacting elements

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EP (1) EP2721695B1 (en)
CN (1) CN103608972B (en)
DE (1) DE102011077589A1 (en)
WO (1) WO2012171808A2 (en)

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DE102014201379A1 (en) * 2014-01-27 2015-07-30 Mahle International Gmbh Contact commuted electric motor
DE102017217884A1 (en) * 2017-10-09 2019-04-11 Robert Bosch Gmbh Method and device for producing an electrically conductive connection between a conductor track and an electrical conductor
DE102017219193B3 (en) * 2017-10-26 2019-03-28 Phoenix Contact Gmbh & Co. Kg Pluggable ensemble
CN110972433B (en) * 2018-09-28 2023-06-27 罗伯特·博世有限公司 Housing for Printed Circuit Board (PCB)
DE102018218434A1 (en) * 2018-10-29 2020-04-30 Bühler Motor GmbH Electronics module, pump drive with this electronics module

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FR2506526A1 (en) * 1981-05-21 1982-11-26 Dav Ind Female printed circuit board edge connector clip - has reinforcing strips pressed from single metal piece and gives better electrical contact

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DE7018078U (en) 1970-05-14 1970-08-06 Bbc Brown Boveri & Cie CONTACT SPRING FOR CIRCUIT BOARDS.
DE3436119C2 (en) 1984-10-02 1986-10-02 Siemens AG, 1000 Berlin und 8000 München Contact spring element for contacting printed circuit boards
DE29617905U1 (en) 1996-10-15 1996-12-05 Siedle & Soehne S PCB with contact spring
FR2781611B1 (en) * 1998-07-22 2000-10-06 Proner Comatel Sa CONTACT PART FOR A FEMALE CONNECTOR, AND CONNECTOR COMPRISING SUCH A CONTACT PART
JP3643002B2 (en) * 2000-01-31 2005-04-27 株式会社オートネットワーク技術研究所 Mounting method for board mounting type terminals
DE10122596A1 (en) 2001-05-10 2002-11-21 Leoni Bordnetz Sys Gmbh & Co Contact bearer for plug contacting components has through holes for contact elements in contact with conducting track that protrude on underside, accept component plug contact elements
US6974337B2 (en) * 2002-07-30 2005-12-13 Fci Americas Technology, Inc. Electrical connector and contact for use therein
JP4600249B2 (en) * 2005-11-10 2010-12-15 パナソニック株式会社 Press-fit fixing terminal

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FR2506526A1 (en) * 1981-05-21 1982-11-26 Dav Ind Female printed circuit board edge connector clip - has reinforcing strips pressed from single metal piece and gives better electrical contact

Also Published As

Publication number Publication date
EP2721695A2 (en) 2014-04-23
DE102011077589A1 (en) 2012-12-20
WO2012171808A3 (en) 2013-04-25
CN103608972A (en) 2014-02-26
CN103608972B (en) 2016-05-11
WO2012171808A2 (en) 2012-12-20

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