EP0157123A2 - Connection device of conductors for printed boards - Google Patents

Connection device of conductors for printed boards Download PDF

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Publication number
EP0157123A2
EP0157123A2 EP85101278A EP85101278A EP0157123A2 EP 0157123 A2 EP0157123 A2 EP 0157123A2 EP 85101278 A EP85101278 A EP 85101278A EP 85101278 A EP85101278 A EP 85101278A EP 0157123 A2 EP0157123 A2 EP 0157123A2
Authority
EP
European Patent Office
Prior art keywords
circuit board
conductor connection
pressure piece
printed circuit
connection according
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.)
Granted
Application number
EP85101278A
Other languages
German (de)
French (fr)
Other versions
EP0157123B1 (en
EP0157123A3 (en
Inventor
Peter Krüger
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.)
Ca Weidmueller & Co GmbH
Weidmueller Interface GmbH and Co KG
Original Assignee
Ca Weidmueller & Co GmbH
Weidmueller Interface GmbH and Co KG
CA Weidmueller GmbH and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ca Weidmueller & Co GmbH, Weidmueller Interface GmbH and Co KG, CA Weidmueller GmbH and Co filed Critical Ca Weidmueller & Co GmbH
Priority to AT85101278T priority Critical patent/ATE46594T1/en
Publication of EP0157123A2 publication Critical patent/EP0157123A2/en
Publication of EP0157123A3 publication Critical patent/EP0157123A3/en
Application granted granted Critical
Publication of EP0157123B1 publication Critical patent/EP0157123B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • 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
    • H01R12/515—Terminal blocks providing connections to wires or cables
    • 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
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/722—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits
    • H01R12/728—Coupling devices without an insulating housing provided on the edge of the PCB
    • 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
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • 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
    • H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut

Definitions

  • the present invention relates to a conductor connection for laminated printed circuit boards, consisting of a drawbar with screwed-in clamping screw and two contact plates arranged above and below the circuit board edge area and arranged in the drawbar.
  • the receiving edge region of the circuit board is provided with two slots, so that the pulling bracket of the conductor connection can be inserted here.
  • the contact plates are loosely inserted in the frame or cage-shaped contact bracket. The upper contact plate is acted upon by the clamping screw.
  • the contact plates are dimensioned with laterally protruding tongues so that these mechanically bridge the slots in the circuit board and thus forces which are perpendicular to the plane of the circuit board can be absorbed.
  • the two contact plates form loose individual parts that can easily be lost from the cage-like pull bracket, and the clamping screw itself can easily be removed from the pull bracket due to vibrations during transport.
  • connection on the circuit board and the fixing of the conductor in the connection are extremely problematic.
  • pull bracket must be in the slots of the PCB must be threaded, but moreover, the two contact plates must also be kept apart in order to cover the material area
  • the present invention has for its object to provide a conductor connection of the generic type which, on the other hand, is very easy to assemble and is characterized by good electrical conductivity between the top side of the printed circuit board and the underside of the printed circuit board.
  • the solution according to the invention is that the two contact plates are mechanically and electrically conductive at their edges facing away from the printed circuit board are connected to each other to a pressure piece, which in turn is freely rotatably connected to the clamping screw.
  • the two contact plates for receiving the printed circuit board are at a distance that is ready for reception. They are captive and together with the clamping screw form an overall captive unit, since the clamping screw itself can no longer be lost.
  • the pull bracket By turning the clamping screw into the open position, the pull bracket also reaches the open position and is readily ready to receive the conductor to be connected, because the lower contact plate can no longer fall off as part of the pressure piece.
  • the connection of the two contact plates to the pressure piece also ensures an excellent electrical connection, which is always to be adequately dimensioned in the line cross section, between the two contact plates and thus between the conductor tracks on the upper side and the lower side of the printed circuit board.
  • the pressure piece is bent from a stamped part containing the two contact plates and a connecting web. The pressure piece is thus also easy to manufacture.
  • a connecting tab is arranged on the upper contact plate of the pressure piece, in which a snap-in receptacle for the clamping screw, which is expediently provided with a corresponding screwing, is provided.
  • This connecting tab is advantageously formed on the stamped part.
  • the distance between the two contact plates of the pressure piece is dimensioned and the pressure piece is made of such a material that it can be resiliently placed onto the printed circuit board in a predetermined printed circuit board thickness range.
  • the provider of the circuit board and the connection can already slide the connector onto the circuit board and in its open position, i.e. ready to receive the electrical conductor to be connected, the provider is offered.
  • a convenient assembly contributes to the fact that the opening and insertion direction of the snap-in receptacle for the clamping screw is at an angle of 90 ° to the opening and insertion direction of the contact plates with respect to the printed circuit board. In this way, during assembly, the pressure piece can be inserted in a simple manner from the one side of the pull bracket and locked with the clamping screw, while then being pushed onto the printed circuit board on the other side of the connection thus assembled.
  • the drawbar in the case of the conductor connection in the case of unslotted areas of the printed circuit board edge, has a receiving slot on its side facing the printed circuit board. Thanks to this configuration, such a conductor connection can also be connected at any time to the edge regions of an unslotted printed circuit board at all desired locations.
  • a separate conductor connection piece is provided in the tension bracket outside the pressure piece. This configuration in particular enables the manufacturer and supplier of the printed circuit boards and the connecting pieces to carry out a fully functional pre-assembly of the printed circuit boards.
  • connections are fixed at the factory with a predetermined torque and thus without the risk of destruction on the printed circuit board at the predetermined points by means of the clamping screw connected to the pressure piece. Improper attachments to the user are also switched off. With this configuration, the user no longer has to worry about the attachment of the connection to the circuit board itself. He simply puts his conductor to be connected in the area of the separate additional conductor connection piece and then only fixes the conductor in the tension bracket.
  • the conductor connection has a cage-like closed at the four corners 1, into which a clamping screw 2 is screwed on the top.
  • the laminated printed circuit board 3 has two slots 4 in its edge area for receiving the conductor connection, into which the pull bracket can be inserted.
  • the conductor connection also has two contact plates 5 and 6, which are mechanically and electrically connected to one another to form an integral pressure piece 7. For this purpose, they are connected at their edge area facing away from the printed circuit board via a connecting web 8.
  • the pressure piece 7 is also freely rotatable locked to the lower end of the clamping screw 2, for which purpose the clamping screw 2 has a recess 9 at its lower end and for which purpose the pressure piece 7 has a connecting tab 10 in which a latching opening 11 for receiving the lower end of the clamping screw 2 is provided.
  • the connecting tab 10 is expediently formed in one piece with the one free edge area of the lower contact plate 6.
  • the entire pressure piece 7 including the connecting tab 10 is, for example, a one-piece stamped part, which is then bent according to its final shape.
  • the opening and insertion direction of the snap-in receptacle 11 in the connecting lug 10 is at an angle of 90 ° to the opening and insertion direction of the two contact plates 5 and 6 with respect to the printed circuit board 3.
  • the pressure piece 7 can thus be easily inserted into the pull bracket from one side 1 inserted and locked here with the lower end of the clamping screw 2 and is then ready for insertion on the other side with respect to the circuit board. This is indicated by arrows in Figure 1.
  • the distance between the two contact plates 5 and 6 is dimensioned from one another and such a material with good electrical conductivity properties and sufficient spring properties, such as brass, is chosen for the pressure piece that the conductor connection is resiliently clamped overall in the sense of the pre-assembly the corresponding edge area of the printed circuit board 3 can be pushed on and is here also held sufficiently firmly on the printed circuit board by the resilient clamping action of the two contact plates 5 and 6.
  • the two contact plates 5 and 6 have protruding lateral areas so far that they mechanically bridge the slots 4 on the top and bottom of the circuit board after being pushed onto the circuit board.
  • this conductor connection can also be pushed onto the printed circuit board or preassembled on it in the predetermined open position, as shown in FIG. 1.
  • the surfaces of the contact plates 5 and 6 facing the circuit board 3 can be provided with latching cams (not shown) for which latching recesses are provided in the circuit board.
  • the pressure piece 7, with the same construction, is locked in a freely rotatable manner with the clamping screw 2, with the contact plates 5 and 6 and the connection Tab 10 is arranged in a pull bracket 1 ', which in turn additionally has a receiving slot 12 on the side facing the printed circuit board 3, so that this conductor connection for sliding onto the printed circuit board is no longer dependent on slots being provided at a corresponding point in the printed circuit board.
  • a pull bracket 1 '' is provided which, as in the embodiment of Figure 3, on the side facing the printed circuit board 3 has a receiving slot 12 for pushing the conductor connection onto the edge of an unslotted printed circuit board and in the latter Receiving area of the circuit board again the pressure piece 7 with the contact plates 5 and 6 and the connecting tab 10 is provided and is rotatably locked with the clamping screw 2.
  • the clamping screw 2 only serves to fix the conductor connection on the printed circuit board, but no longer to simultaneously fix the conductor to be connected to the pulling bracket 1 ".
  • This pulling bracket 1" has a separate conductor connecting piece outside its area which receives the pressure piece 7, For example, in the form of a further clamping screw 13, which carries a clamping bracket 14, so that here, based on the circuit board in the rear area, the conductor to be connected can be determined separately, specifically when the conductor connection as such via the clamping screw 2 is already on the printed circuit board 3 is finally assembled.
  • the contact plates 5 and 6 of the pressure piece 7 can be provided with locking teeth on their surfaces facing the circuit board, which dig into the conductor tracks when the conductor is connected, and which also already can cause grooves to favor contact when the connection is pushed onto the circuit board in the conductor tracks.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Combinations Of Printed Boards (AREA)
  • Multi-Conductor Connections (AREA)

Abstract

In a connector for printed circuit board a traction yoke is a frame in which two parallel contact plates are positioned. The contact plates are mechanically and electrically combined in a single contact piece which can be rotated about a clamping bolt received in the contact piece and clamping the connector to the printed circuit board.

Description

Die vorliegende Erfindung betrifft einen Leiteranschluß für kaschierte Leiterplatten, bestehend aus einem Zugbügel mit eingeschraubter Klemmschraube und zwei den Leiterplattenrandbereich über- und untergreifenden, in dem Zugbügel angeordneten Kontaktplatten.The present invention relates to a conductor connection for laminated printed circuit boards, consisting of a drawbar with screwed-in clamping screw and two contact plates arranged above and below the circuit board edge area and arranged in the drawbar.

Bei einem derartigen bekannten Leiteranschluß (DE-OS 32 08 065) ist der aufnehmende Randbereich der Leiterplatte mit zwei Schlitzen versehen, so daß der Zugbügel des Leiteranschlusses hier eingeschoben werden kann. Die Kontaktplatten sind lose in den rahmen- oder käfigförmigen Kontaktbügel eingelegt. Die obere Kontaktplatte wird oberseitig von der Klemmschraube beaufschlagt. Die Kontaktplatten sind mit seitlich abstehenden Zungen so dimensioniert, daß diese die Schlitze in der Leiterplatte mechanisch überbrücken und somit Kräfte, die senkrecht auf der Ebene der Leiterplatte stehen, aufgenommen werden können.In such a known conductor connection (DE-OS 32 08 065), the receiving edge region of the circuit board is provided with two slots, so that the pulling bracket of the conductor connection can be inserted here. The contact plates are loosely inserted in the frame or cage-shaped contact bracket. The upper contact plate is acted upon by the clamping screw. The contact plates are dimensioned with laterally protruding tongues so that these mechanically bridge the slots in the circuit board and thus forces which are perpendicular to the plane of the circuit board can be absorbed.

Bei dieser Ausgestaltung bilden die beiden Kontaktplatten lose, aus dem käfigartigen Zugbügel ohne weiteres verlierbare Einzelteile und auch die Klemmschraube selbst kann sich ohne weiteres durch Erschütterungen während des Transportes aus dem Zugbügel herausdrehen.In this embodiment, the two contact plates form loose individual parts that can easily be lost from the cage-like pull bracket, and the clamping screw itself can easily be removed from the pull bracket due to vibrations during transport.

Die Montage des Anschlusses auf der Leiterplatte sowie die Festlegung des Leiters in dem Anschluß sind außerordentlich problematisch. Zur Montage auf der Leiterplatte muß nämlich nicht nur der Zugbügel in die Schlitze der Leiterplatte eingefädelt werden, sondern darüberhinaus müssen hierzii-auch die beiden Kontaktplatten auseinandergehalten werden, um den MaterialbereichThe assembly of the connection on the circuit board and the fixing of the conductor in the connection are extremely problematic. For mounting on the printed circuit board, not only the pull bracket must be in the slots of the PCB must be threaded, but moreover, the two contact plates must also be kept apart in order to cover the material area

der Leiterplatte zwischen den beiden Schlitzen zwischen sich aufnehmen zu können. Fehlmontagen dadurch, daß versehentlich beide Kontaktplatten auf der Oberseite oder der Unterseite der Leiterplatte liegen, können vorkommen. Eine werksseitige Vormontage derart, daß dem Anwender der Anschluß, schon mit dem Randbereich der Leiterplatte verbunden, zur Verfügung gestellt wird, ist überhaupt nur im geschlossenen, gespannten Zustand möglich, da andernfalls der Anschluß sofort von der Leiterplatte herunterfallen würde. Zum Anschließen des Leiters muß der Anwender also in jedem Fall den Anschluß wieder öffnen, und dabei darauf achten, daß der Anschluß nicnt von der Leiterplatte heruntergelangt. Er muß zusätzlich und zugleich die untere Kontaktplatte hochhalten, um den Leiter zwischen die untere Kontaktplatte und den Boden des Zugbügels einstecken zu können,the PCB between the two slots between them. Incorrect assembly due to the fact that both contact plates are accidentally on the top or bottom of the circuit board can occur. Factory pre-assembly such that the user is provided with the connection, already connected to the edge area of the circuit board, is only possible in the closed, tensioned state, since otherwise the connection would immediately fall off the circuit board. To connect the conductor, the user must therefore open the connection again, taking care that the connection does not come down from the circuit board. He must also hold up the lower contact plate at the same time in order to be able to insert the conductor between the lower contact plate and the bottom of the drawbar,

lose im Zugbügel geführte untere Kontaktplatte immer wieder nach unten fallen würde.loosely guided lower contact plate would always fall down again.

Leiter der infrage stehenden Art sind oft auf beträchtliche Stromstärken ausgelegt und von daher werden normalerweise die oberen und unteren Leiterzüge auf der Leiterplatte gleichzeitig eingesetzt. Das an sich mögliche Durchkontaktieren auf der Leiterplatte selbst ergibt dabei nur sehr geringe Leitungsquerschnitte. Bei der bekannten Ausgestaltung haben dabei aber die obere und die untere Kontaktplatte elektrisch untereinander nur Kontakt durch den Zugbügel. Dieser besteht meist aus nichtConductors of the type in question are often designed for considerable current intensities and therefore the upper and lower conductor lines on the printed circuit board are normally used simultaneously. The possible through-contacting on the circuit board itself results in only very small wire cross-sections. In the known embodiment, however, the upper and the lower contact plates have only electrical contact with one another through the drawbar. This usually does not consist of

gut leitenden Material, so daß auch von daher die elektrisch leitende Verbindung zwischen Oberseite und Unterseite der Leiterplatte unbefriedigend ist.good conductive material, so that the electrically conductive connection between the top and bottom of the circuit board is unsatisfactory.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen Leiteranschluß der gattungsgemäßen Art zu schaffen, der demgegenüber sehr einfach zu montieren ist und sich durch eine gute elektrische Leitfähigkeit zwischen Leiterplattenoberseite und Leiterplattenunterseite auszeichnet.The present invention has for its object to provide a conductor connection of the generic type which, on the other hand, is very easy to assemble and is characterized by good electrical conductivity between the top side of the printed circuit board and the underside of the printed circuit board.

Die erfindungsgemäße Lösung besteht darin, daß die beiden Kontaktplatten an ihren der Leiterplatte abgewandten Rändern mechanisch und elektrisch leitend zu einem Druckstück miteinander verbunden sind, das seinerseits freidrehbar mit der Klemmschraube verbunden ist.The solution according to the invention is that the two contact plates are mechanically and electrically conductive at their edges facing away from the printed circuit board are connected to each other to a pressure piece, which in turn is freely rotatably connected to the clamping screw.

Dank dieser Ausgestaltung stehen die beiden Kontaktplatten für die Aufnahme der Leiterplatte in aufnahmebereitem Abstand voneinander. Sie sind unverlierbar und bilden zusammen mit der Klemmschraube insgesamt eine unverlierbare Einheit, da auch die Klemmschraube selbt nicht mehr verlierbar ist. Durch Drehen der Klemmschraube in die öffnungsstellung gelangt dabei auch der Zugbügel in die Offenstellung und ist ohne weiteres für die Aufnahme des anzuschließenden Leiters aufnahmebereit, weil ja die untere Kontaktplatte als Teil des Druckstückes nicht mehr herabfallen kann. Die Verbindung der beiden Kontaktplatten zu dem Druckstück gewährleistet darüber hinaus eine im Leitungsquerschnitt jederzeit reichlich zu bemessende hervorragende elektrische Verbindung zwischen den beiden Kontaktplatten und damit zwischen den Leiterzügen auf der Oberseite und der Unterseite der Leiterplatte. In zweckmäßiger Ausgestaltung ist dabei das Druckstück aus einem die beiden Kontaktplatten und einen Verbindungssteg beinhaltenden Stanzteil gebogen. Das Druckstück ist somit auch einfach herstellbar.Thanks to this configuration, the two contact plates for receiving the printed circuit board are at a distance that is ready for reception. They are captive and together with the clamping screw form an overall captive unit, since the clamping screw itself can no longer be lost. By turning the clamping screw into the open position, the pull bracket also reaches the open position and is readily ready to receive the conductor to be connected, because the lower contact plate can no longer fall off as part of the pressure piece. The connection of the two contact plates to the pressure piece also ensures an excellent electrical connection, which is always to be adequately dimensioned in the line cross section, between the two contact plates and thus between the conductor tracks on the upper side and the lower side of the printed circuit board. In an expedient embodiment, the pressure piece is bent from a stamped part containing the two contact plates and a connecting web. The pressure piece is thus also easy to manufacture.

In weiterer zweckmäßiger Ausgestaltung ist dabei an der oberen Kontaktplatte des Druckstückes eine Verbindungslasche angeordnet, in der eine Rastaufnahme für die Klemmschraube, die zweckmäßig mit einer entprechenden Eindrehung versehen ist, vorgesehen ist. Diese Verbindungslasche wird zweckmäßig an dem Stanzteil mit gebildet.In a further expedient embodiment, a connecting tab is arranged on the upper contact plate of the pressure piece, in which a snap-in receptacle for the clamping screw, which is expediently provided with a corresponding screwing, is provided. This connecting tab is advantageously formed on the stamped part.

Gemäß einer ganz besonders vorteilhaften Ausgestaltung ist der Abstand zwischen den beiden Kontaktplatten des Druckstückes so bemessen, und besteht das Druckstück aus einem solchen Material, daß es in einem vorgegebenen Leiterplattendickenbereich klemmend federnd auf die Leiterplatte aufsetzbar ist. Auf diese Weise kann vom Anbieter der Leiterplatte und des Anschlusses der Anschluß, schon auf die Leiterplatte fertig aufgeschoben und in seiner Offenstellung, d.h. aufnahmebereit für den anzuschließenden elektrischen Leiter, dem Anbieter angeboten werden.According to a very particularly advantageous embodiment, the distance between the two contact plates of the pressure piece is dimensioned and the pressure piece is made of such a material that it can be resiliently placed onto the printed circuit board in a predetermined printed circuit board thickness range. In this way, the provider of the circuit board and the connection can already slide the connector onto the circuit board and in its open position, i.e. ready to receive the electrical conductor to be connected, the provider is offered.

Bei der Anwendung auf kaschierte Leiterplatten, die in bekannterweise die beiden Aufnahmeschlitze für den Zugbügel haben, ist dieser in bekannter Weise käfigförmig und die Kontaktplatten überbrücken in der bekannten Weise die Schlitze mechanisch mit seitlichen Zungen. Bei dieser Ausgestaltung trägt zu einer bequemen Montage mit bei, daß die Öffnungs- und Einführungsrichtung der Rastaufnahme für die Klemmschraube in einem Winkel von 90° zur öffnungs- und Einführungsrichtung der Kontaktplatten bezüglich der Leiterplatte liegt. Auf diese Weise kann bei der Montage in einfacher Weise von der einen Zugbügelseite her das Druckstück eingeschoben und mit der Klemmschraube verrastet werden, während dann auf der anderen Seite des so montierten Anschlusses das Aufschieben auf die Leiterplatte erfolgt.When used on laminated printed circuit boards, which in a known manner have the two receiving slots for the drawbar, the latter is cage-shaped in a known manner and the contact plates bridge the slots mechanically with lateral tongues in the known manner. In this embodiment, a convenient assembly contributes to the fact that the opening and insertion direction of the snap-in receptacle for the clamping screw is at an angle of 90 ° to the opening and insertion direction of the contact plates with respect to the printed circuit board. In this way, during assembly, the pressure piece can be inserted in a simple manner from the one side of the pull bracket and locked with the clamping screw, while then being pushed onto the printed circuit board on the other side of the connection thus assembled.

Gemäß einer weiteren, besonders zweckmäßigen Ausgestaltung weist bei dem Leiteranschluß bei ungeschlitzten Leiterplattenrandbereichen der Zugbügel auf seiner der Leiterplatte zugewandten Seite einen Aufnahmeschlitz auf. Dank dieser Ausgestaltung kann ein derartiger Leiteranschluß auch jederzeit an allen gewünschten Stellen mit den Randbereichen einer ungeschlitzten Leiterplatte verbunden werden. Gemäß einer weiteren, besonders zweckmäßigen Ausgestaltung ist in dem Zugbügel außerhalb des Druckstückes ein gesondertes Leiteranschlußstück vorgesehen. Besonders diese Ausgestaltung ermöglicht es dem Hersteller und Anbieter der Leiterplatten und der Anschlußstücke, eine vollfunktionsfähige Leiterplattenvormontage durchzuführen. Die Anschlüsse werden werksseitig mit einem vorbestimmten Drehmoment und damit ohne die Gefahr von Zerstörungen an der Leiterplatte an den vorbestimmten Stellen mittels der mit dem Druckstückverbundenen Klemmschraube festgesetzt. Auch Fehlanbringungen beim Anwender sind ausgeschaltet. Der Anwender hat sich bei dieser Ausgestaltung um die Anbringung des Anschlusses an der Leiterplatte selbst nicht mehr zu kümmern. Er steckt lediglich seinen anzuschließenden Leiter in den Bereich des gesonderten zusätzlichen Leiteranschlusstückes und legt mit diesem dann nur noch den Leiter im Zugbügel fest.According to a further, particularly expedient embodiment, in the case of the conductor connection in the case of unslotted areas of the printed circuit board edge, the drawbar has a receiving slot on its side facing the printed circuit board. Thanks to this configuration, such a conductor connection can also be connected at any time to the edge regions of an unslotted printed circuit board at all desired locations. According to a further, particularly expedient embodiment, a separate conductor connection piece is provided in the tension bracket outside the pressure piece. This configuration in particular enables the manufacturer and supplier of the printed circuit boards and the connecting pieces to carry out a fully functional pre-assembly of the printed circuit boards. The connections are fixed at the factory with a predetermined torque and thus without the risk of destruction on the printed circuit board at the predetermined points by means of the clamping screw connected to the pressure piece. Improper attachments to the user are also switched off. With this configuration, the user no longer has to worry about the attachment of the connection to the circuit board itself. He simply puts his conductor to be connected in the area of the separate additional conductor connection piece and then only fixes the conductor in the tension bracket.

Ausführungsbeispiele derartiger Leiteranschlüsse für kaschierte Leiterplatten werden nachstehend unter Bezugnahme auf die Zeichnung näher beschrieben.Embodiments of such conductor connections for laminated circuit boards are described in more detail below with reference to the drawing.

Es zeigen

  • Figur 1 eine sprengbildlich perspektivische Darstellung eines derartigen Leiteranschlusses mit Einzeldarstellung des Druckstückes sowie Darstellung des im Druckstück ausgerüsteten Leiteranschlusses, aufschiebebereit bezüglich des mit dargestellten Leiterplattenrandes,
  • Figur 2 einen weiteren Leiteranschluß im Längsschnitt,
  • Figur 3 den Leiteranschluß nach Figur 2 in Stirnansicht,
  • Figur 4 einen weiteren derartigen Leiteranschluß im Längsschnitt.
Show it
  • 1 is an exploded perspective view of such a conductor connection with an individual representation of the pressure piece and a representation of the conductor connection equipped in the pressure piece, ready to be pushed open with respect to the printed circuit board edge,
  • FIG. 2 shows a further conductor connection in longitudinal section,
  • 3 shows the conductor connection according to FIG. 2 in front view,
  • Figure 4 shows another such conductor connection in longitudinal section.

Bei dem in Figur 1 dargestellten Ausführungsbeispiel weist der Leiteranschluß einen an den vier Ecken käfigartig geschlossenen Zugbügel 1 auf, in den oberseitig eine Klemmschraube 2 eingeschraubt ist. Die kaschierte Leiterplatte 3 hat in ihrem Randbereich zur Aufnahme des Leiteranschlusses zwei Schlitze 4, in die der Zugbügel eingesteckt werden kann. Der Leiteranschluß weist ferner zwei Kontaktplatten 5 und 6 auf, die mechanisch und elektrisch untereinander zu einem einstückigen Druckstück 7 miteinander verbunden sind. Hierzu sind sie an ihrem der Leiterplatte abgewandten Randbereich über einen Verbindungssteg 8 verbunden. Das Druckstück 7 ist ferner frei drehbar mit dem unteren Ende der Klemmschraube 2 verrastet, wozu die Klemmschraube 2 an ihrem unteren Ende eine Eindrehung 9 aufweist und wozu das Druckstück 7 eine Verbindungslasche 10 aufweist, in der eine Rastöffnung 11 zur Aufnahme des unteren Endes der Klemmschraube 2 vorgesehen ist. Die Verbindungslasche 10 ist zweckmäßig einstückig mit dem einen freien Randbereich der unteren Kontaktplatte 6 ausgebildet. Das gesamte Druckstück 7 einschließlich der Verbindungslasche 10 ist beispielsweise ein einstückig hergestelltes Stanzteil, das dann seiner Endform entsprechend gebogen wird.In the embodiment shown in Figure 1, the conductor connection has a cage-like closed at the four corners 1, into which a clamping screw 2 is screwed on the top. The laminated printed circuit board 3 has two slots 4 in its edge area for receiving the conductor connection, into which the pull bracket can be inserted. The conductor connection also has two contact plates 5 and 6, which are mechanically and electrically connected to one another to form an integral pressure piece 7. For this purpose, they are connected at their edge area facing away from the printed circuit board via a connecting web 8. The pressure piece 7 is also freely rotatable locked to the lower end of the clamping screw 2, for which purpose the clamping screw 2 has a recess 9 at its lower end and for which purpose the pressure piece 7 has a connecting tab 10 in which a latching opening 11 for receiving the lower end of the clamping screw 2 is provided. The connecting tab 10 is expediently formed in one piece with the one free edge area of the lower contact plate 6. The entire pressure piece 7 including the connecting tab 10 is, for example, a one-piece stamped part, which is then bent according to its final shape.

Die öffnungs- und Einführungsrichtung derRastaufnahme 11 in der Verbindungslasche 10 liegt in einem Winkel von 90° zur öffnungs- und Einführungsrichtung der beiden Kontaktplatten 5 und 6 bezüglich der Leiterplatte 3. Das Druckstück 7 kann somit in einfacher Weise von der einen Seite her in den Zugbügel 1 eingeführt und hier mit dem unteren Ende der Klemmschraube 2 verrastet werden und liegt dann der anderen Seite einschiebebereit bezüglich der Leiterplatte vor. Dies ist durch Pfeile in Figur 1 angedeutet.The opening and insertion direction of the snap-in receptacle 11 in the connecting lug 10 is at an angle of 90 ° to the opening and insertion direction of the two contact plates 5 and 6 with respect to the printed circuit board 3. The pressure piece 7 can thus be easily inserted into the pull bracket from one side 1 inserted and locked here with the lower end of the clamping screw 2 and is then ready for insertion on the other side with respect to the circuit board. This is indicated by arrows in Figure 1.

Bei der Bildung des Druckstückes 7 wird der Abstand der beiden Kontaktplatten 5 und 6 voneinander so bemessen und wird für das Druckstück ein solches Material mit guten elektrischen Leiteigenschaften sowie ausreichenden Federeigenschaften, wie beispielsweise Messing gewählt, daß der Leiteranschluß insgesamt im Sinne der Vormontage federnd klemmend auf den entsprechenden Randbereich der Leiterplatte 3 aufgeschoben wrden kann und hier auch durch die federnde klemmende Wirkung der beiden Kontaktplatten 5 und 6 vorläufig ausreichend fest auf der Leiterplatte gehalten wird. Die beiden Kontaktplatten 5 und 6 haben dabei soweit vorstehende seitliche Bereiche, daß diese nach dem Aufschieben auf die Leiterplatte die Schlitze 4 mechanisch auf der Oberseite und Unterseite der Leiterplatte überbrücken.When the pressure piece 7 is formed, the distance between the two contact plates 5 and 6 is dimensioned from one another and such a material with good electrical conductivity properties and sufficient spring properties, such as brass, is chosen for the pressure piece that the conductor connection is resiliently clamped overall in the sense of the pre-assembly the corresponding edge area of the printed circuit board 3 can be pushed on and is here also held sufficiently firmly on the printed circuit board by the resilient clamping action of the two contact plates 5 and 6. The two contact plates 5 and 6 have protruding lateral areas so far that they mechanically bridge the slots 4 on the top and bottom of the circuit board after being pushed onto the circuit board.

Durch den Verbindungssteg 8 zwischen den beiden Kontaktplatten 5 und 6 sind die Leiterzüge auf der Oberseite und auf der Unterseite der Leiterplatte 3 sehr gut elektrisch leitend miteinander verbunden.Through the connecting web 8 between the two contact plates 5 and 6, the conductor tracks on the top and on the underside of the circuit board 3 are very well connected to one another in an electrically conductive manner.

Dank der geschilderten Ausgestaltung kann dieser Leiteranschluß auch in vorgegebener Offenstellung, wie in Figur 1 gezeigt, auf die Leiterplatte aufgeschoben bzw. an dieser vormontiert werden. Für den Anwender genügt die Einsteckung des Leiters in den unteren Bereich des Zugbügels 1 unterhalb der unteren Kontaktplatte 5 sowie das Betätigen der Klemmschraube 2, durch deren Drehen der Zugbügel 1 hochgeführt und unter Zwischenlage des Leiters an die untere Kontaktplatte 5 geklemmt wird.Thanks to the design described, this conductor connection can also be pushed onto the printed circuit board or preassembled on it in the predetermined open position, as shown in FIG. 1. For the user, it is sufficient to insert the conductor into the lower region of the pulling bracket 1 below the lower contact plate 5 and to actuate the clamping screw 2, by means of which the pulling bracket 1 is raised and clamped to the lower contact plate 5 with the intermediate conductor.

In weiterer Ausgestaltung können die der Leiterplatte 3 zugewandt liegenden Flächen der Kontaktplatten 5 und 6 mit Rastnocken (nicht dargestellt) versehen sein, für die Rastausnehmungen in der Leiterplatte vorgesehen sind. Hierdurch läßt sich die Lagehaltigkeit der Vormontage noch steigern.In a further embodiment, the surfaces of the contact plates 5 and 6 facing the circuit board 3 can be provided with latching cams (not shown) for which latching recesses are provided in the circuit board. As a result, the positional stability of the pre-assembly can be increased.

Bei dem in den Figuren 2 und 3 dargestellten Ausführungsbeispiel ist bei grundsätzlich gleichem Aufbau das Druckstück 7, frei drehbar mit der Klemmschraube 2 verrastet, mit den Kontaktplatten 5 und 6 und der Verbindungslasche 10 in einem Zugbügel 1 ' angeordnet, der seinerseits zusätzlich auf der der Leiterplatte 3 zugewandten Seite einen Aufnahmeschlitz 12 aufweist, so daß dieser Leiteranschluß zum Aufschieben auf die Leiterplatte nicht mehr darauf angewiesen ist, daß an entsprechender Stelle in der Leiterplatte Schlitze vorgesehen sind.In the embodiment shown in FIGS. 2 and 3, the pressure piece 7, with the same construction, is locked in a freely rotatable manner with the clamping screw 2, with the contact plates 5 and 6 and the connection Tab 10 is arranged in a pull bracket 1 ', which in turn additionally has a receiving slot 12 on the side facing the printed circuit board 3, so that this conductor connection for sliding onto the printed circuit board is no longer dependent on slots being provided at a corresponding point in the printed circuit board.

Bei dem in Figur 4 dargestellten Ausführungsbeispiel ist ein Zugbügel 1'' vorgesehen, der, wie beim Ausführungsbeispiel nach Figur 3, auf der der Leiterplatte 3 zugewandten Seite einen Aufnahmeschlitz 12 zum Aufschieben des Leiteranschlusses auf den Rand einer ungeschlitzten Leiterplatte aufweist und bei dem in diesem Aufnahmebereich der Leiterplatte wieder das Druckstück 7 mit den Kontaktplatten 5 und 6 sowie der Verbindungslasche 10 vorgesehen und mit der Klemmschraube 2 drehbar verrastet ist. Bei dieser Ausgestaltung dient jedoch die Klemmschraube 2 nur noch zur Festlegung des Leiteranschlusses an der Leiterplatte, nicht mehr jedoch zur gleichzeitigen Festlegung des anzuschließenden Leiters am Zugbügel 1". Dieser Zugbügel 1" nämlich hat außerhalb seines, das Druckstück 7 aufnehmenden Bereiches ein gesondertes Leiteranschlußstück, beispielsweise in Form einer weiteren Klemmschraube 13, die einen Klemmbügel 14 trägt, so daß hier, bezogen auf die Leiterplatte im hinteren Bereich,dann der anzuschließende Leiter gesondert festgelegt werden kann, und zwar dann, wenn der Leiteranschluß als solcher über die Klemmschraube 2 bereits an der Leiterplatte 3 endmontiert ist.In the embodiment shown in Figure 4, a pull bracket 1 '' is provided which, as in the embodiment of Figure 3, on the side facing the printed circuit board 3 has a receiving slot 12 for pushing the conductor connection onto the edge of an unslotted printed circuit board and in the latter Receiving area of the circuit board again the pressure piece 7 with the contact plates 5 and 6 and the connecting tab 10 is provided and is rotatably locked with the clamping screw 2. In this embodiment, however, the clamping screw 2 only serves to fix the conductor connection on the printed circuit board, but no longer to simultaneously fix the conductor to be connected to the pulling bracket 1 ". This pulling bracket 1" has a separate conductor connecting piece outside its area which receives the pressure piece 7, For example, in the form of a further clamping screw 13, which carries a clamping bracket 14, so that here, based on the circuit board in the rear area, the conductor to be connected can be determined separately, specifically when the conductor connection as such via the clamping screw 2 is already on the printed circuit board 3 is finally assembled.

In weiterer Ausgestaltung eines derartigen Leiteranschlusses können bei allen dargestellten und beschriebenen Ausführungsbeispielen die Kontaktplatten 5 und 6 des Druckstückes 7 auf ihren der Leiterplatte zugewandten Flächen mit Sperrzähnen versehen sein, die sich bei einem Zug am angeschlossenen Leiter in die Leiterzüge eingraben und die darüber hinaus auch schon beim Aufschieben des Anschlusses auf die Leiterplatte in den Leiterzügen Riefen zur Begünstigung des Kontaktes hervorrufen können.In a further embodiment of such a conductor connection, in all of the illustrated and described exemplary embodiments, the contact plates 5 and 6 of the pressure piece 7 can be provided with locking teeth on their surfaces facing the circuit board, which dig into the conductor tracks when the conductor is connected, and which also already can cause grooves to favor contact when the connection is pushed onto the circuit board in the conductor tracks.

Claims (11)

1. Leiteranschluß für kaschierte Leiterplatten, bestehend aus einem Zugbügel mit eingeschraubter Klemmschraube und zwei den Leiterplattenrandbereich über- und untergreifenden, in dem Zugbügel angeordneten Kontaktplatten, dadurch gekennzeichnet , daß die beiden Kontaktplatten (5 und 6) an ihren, der Leiterplatte abgewandten Rändern mechanisch und elektrisch zu einem Druckstück (7) miteinander verbunden sind, das seinerseits frei drehbar mit der Klemmschraube (2) verbunden ist.1. conductor connection for laminated printed circuit boards, consisting of a pull bracket with screwed-in clamping screw and two overlapping and underneath the circuit board edge area, arranged in the pull bracket contact plates, characterized in that the two contact plates (5 and 6) on their edges facing away from the printed circuit board mechanically and are electrically connected to each other to form a pressure piece (7), which in turn is freely rotatably connected to the clamping screw (2). 2. Leiteranschluß nach Anspruch 1, dadurch gekennzeichnet, daß bei ungeschlitztem Leiterplattenrandbereich der Zugbügel (1', 1") auf seiner der Leiterplatten zugewandten Seite und in dem das Druckstück (7) aufnehmenden Bereich einen Aufnahmeschlitz (12) aufweist.2. A conductor connection according to claim 1, characterized in that in the case of an unslotted circuit board edge region, the tension bracket (1 ', 1 ") has a receiving slot (12) on its side facing the circuit boards and in the region receiving the pressure piece (7). 3. Leiteranschluß nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Druckstück (7) aus einem die beiden Kontaktplatten (5 und 6) und einen Verbindungssteg (8) beinhaltenden Stanzteil gebogen ist.3. Conductor connection according to claim 1 or 2, characterized in that the pressure piece (7) is bent from a stamped part containing the two contact plates (5 and 6) and a connecting web (8). 4. Leiteranschluß nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Klemmschraube (2) an ihrem unteren Ende eine Eindrehung (9) aufweist, mit der das Druckstück (7) verrastet ist.4. conductor connection according to claim 1 or 2, characterized in that the clamping screw (2) has at its lower end a recess (9) with which the pressure piece (7) is locked. 5. Leiteranschluß nach Anspruch 4, dadurch gekennzeichnet, daß an dem Druckstück (7) an seiner oberen Kontaktplatte (6) eine Verbindungslasche (10) angeordnet ist, in der eine Rastaufnahme (11) für die Klemmschraube (2) vorgesehen ist.5. conductor connection according to claim 4, characterized in that on the pressure piece (7) on its upper contact plate (6) a connecting tab (10) is arranged in which a latching receptacle (11) for the clamping screw (2) is provided. 6. Leiteranschluß nach den Ansprüchen 3 und 5, dadurch gekennzeichnet, daß die Verbindungslasche (10) bei dem Stanzteil an dem freien Außenrand der Kontaktplatte (6) ausgebildet und über die obere Kontaktplatte (6) umgebogen ist.6. conductor connection according to claims 3 and 5, characterized in that the connecting tab (10) is formed in the stamped part on the free outer edge of the contact plate (6) and bent over the upper contact plate (6). 7. Leiteranschluß nach Anspruch 5, dadurch gekennzeichnet, daß die öffnungs- und Einführungsrichtung der Rastaufnahme (11) für die Klemmschraube (2) in einem Winkel von 90° zur öffnungs- und Einführungsrichtung der Kontaktplatten (5 und 6) bezüglich der Leiterplatte (3) liegt.7. conductor connection according to claim 5, characterized in that the opening and insertion direction of the locking receptacle (11) for the clamping screw (2) at an angle of 90 ° to the opening and insertion direction of the contact plates (5 and 6) with respect to the circuit board (3 ) lies. 8. Leiteranschluß nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß in dem Zugbügel (1") außerhalb des Druckstückes (7) ein gesondertes Leiteranschlußstück (13, 14) vorgesehen ist.8. conductor connection according to claim 1 or 2, characterized in that in the tension bracket (1 ") outside the pressure piece (7) a separate conductor connection piece (13, 14) is provided. 9. Leiteranschluß nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der Abstand zwischen den Kontaktplatten (5 und 6) des Druckstückes (7) so bemessen ist und das Druckstück (7) aus einem solchen Material beteht, daß es in einem vorgegebenen Leiterplatten-Dickenbereich klemmend federnd auf die Leiterplatte aufsetzbar ist.9. conductor connection according to one of claims 1 or 2, characterized in that the distance between the contact plates (5 and 6) of the pressure piece (7) is dimensioned and the pressure piece (7) is made of such a material that it is in a predetermined PCB thickness range can be clamped resiliently placed on the circuit board. 10. Leiteranschluß nach Anspruch 9, dadurch gekennzeichnet, daß die der Leiterplatte zugewandt liegenden Flächen der Kontaktplatten (5, 6) mit Rastnocken versehen sind, für die in der Leiterplatte Rastausnehmungen vorgesehen sind.10. A conductor connection according to claim 9, characterized in that the surfaces of the contact plates (5, 6) facing the printed circuit board are provided with latching cams, for which latching recesses are provided in the printed circuit board. 11. Leiteranschluß nach Anspruch1 oder 2, dadurch gekennzeichnet, daß die der Leiterplatte zugewandt liegenden Flächen der Kontaktplatten (5, 6) mit Sperrzähnen versehen sind.11. A conductor connection according to claim 1 or 2, characterized in that the surfaces of the contact plates (5, 6) which face the printed circuit board are provided with locking teeth.
EP85101278A 1984-04-03 1985-02-07 Connection device of conductors for printed boards Expired EP0157123B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85101278T ATE46594T1 (en) 1984-04-03 1985-02-07 CONDUCTOR CONNECTION FOR CLAD CIRCUIT BOARDS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843412317 DE3412317A1 (en) 1984-04-03 1984-04-03 LADDER CONNECTION FOR LAMINATED PCB
DE3412317 1984-04-03

Publications (3)

Publication Number Publication Date
EP0157123A2 true EP0157123A2 (en) 1985-10-09
EP0157123A3 EP0157123A3 (en) 1987-05-13
EP0157123B1 EP0157123B1 (en) 1989-09-20

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Family Applications (1)

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EP85101278A Expired EP0157123B1 (en) 1984-04-03 1985-02-07 Connection device of conductors for printed boards

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US (1) US4629281A (en)
EP (1) EP0157123B1 (en)
AT (1) ATE46594T1 (en)
DE (2) DE3412317A1 (en)

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Also Published As

Publication number Publication date
EP0157123B1 (en) 1989-09-20
DE3573198D1 (en) 1989-10-26
US4629281A (en) 1986-12-16
ATE46594T1 (en) 1989-10-15
DE3412317A1 (en) 1985-10-03
EP0157123A3 (en) 1987-05-13

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