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EP1730815B1 - Coaxial plug-in connection for printed boards, featuring spring-loaded tolerance compensation - Google Patents

Coaxial plug-in connection for printed boards, featuring spring-loaded tolerance compensation Download PDF

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Publication number
EP1730815B1
EP1730815B1 EP05737701A EP05737701A EP1730815B1 EP 1730815 B1 EP1730815 B1 EP 1730815B1 EP 05737701 A EP05737701 A EP 05737701A EP 05737701 A EP05737701 A EP 05737701A EP 1730815 B1 EP1730815 B1 EP 1730815B1
Authority
EP
European Patent Office
Prior art keywords
plug
contact pin
printed circuit
conductor
coaxial plug
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.)
Expired - Lifetime
Application number
EP05737701A
Other languages
German (de)
French (fr)
Other versions
EP1730815A1 (en
Inventor
Bernd Rosenberger
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.)
Rosenberger Hochfrequenztechnik GmbH and Co KG
Original Assignee
Rosenberger Hochfrequenztechnik GmbH and Co KG
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Publication of EP1730815A1 publication Critical patent/EP1730815A1/en
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Publication of EP1730815B1 publication Critical patent/EP1730815B1/en
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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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2464—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the contact point
    • 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
    • H01R12/52—Fixed connections for rigid printed circuits or like structures connecting to other rigid printed circuits or like structures
    • 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
    • H01R12/73—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures connecting to other rigid printed circuits or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • H01R24/50—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency mounted on a PCB [Printed Circuit Board]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • H01R24/54—Intermediate parts, e.g. adapters, splitters or elbows
    • H01R24/542—Adapters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
    • H01R13/6315—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only allowing relative movement between coupling parts, e.g. floating connection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles

Definitions

  • the invention relates to a coaxial connector, in particular for printed circuit boards, according to the preamble of claim 1, as in US Pat. No. 6,497,579 was disclosed.
  • coaxial connectors of this type are usually fixed to each circuit board at least one outer conductor socket with an associated inner conductor.
  • the inner conductor has a normally cylindrical contact pin, which is resiliently clamped in a correspondingly formed frontal recess of the inner conductor part of an adapter in the form of a sleeve-shaped plug-in connector can be inserted.
  • the design is such that a defined air gap between outer conductor bushing and end face of the plug-in coupling is left.
  • the invention is therefore the object of the coaxial connector of the generic type to eliminate the disadvantages described in such a way that their Steckwiederholckle, especially at high transmission frequencies up to 60 GHz and more, significantly improved and at the same time significantly simplified production while avoiding unwanted diameter jumps of the contact pin a consistently good contact zone is ensured.
  • the design is such that the inner conductor of the circuit board is designed as a spring plate, which fixed at one end to the circuit board or to an insulation and at its other free end with the formed as a contact pin inner conductor part of the plug-in coupling can be brought into engagement.
  • the spring plate is formed tab-like or strip-shaped, which ensures easy production.
  • the free end of the spring plate protrudes into the axis of the contact pin of the plug-in coupling at an angle. For this reason, no special measures must be taken to always ensure a contact between the spring plate of the circuit board and contact pin of the plug-in coupling.
  • the free end of the spring plate is usually by means of point contact in contact with the respective end of the contact pin. It is within the scope of the invention to provide an opening at the free end of the spring plate, which is largely aligned with the axis of the contact pin. This results in a line-shaped, usually annular, contact between spring plate and contact pin.
  • the contact pin of the plug-in coupling has rounded or spherical, in particular hemispherical, ends.
  • Such a contact pin can be produced with the least possible manufacturing effort and at the same time ensures that the contact between its ends and the respective free end of the spring plate is always achieved with the highest efficiency.
  • the contact pin has a length such that it is resiliently engaged with the free end of the spring plate at plug-in coupling plugged into the socket-shaped outer conductor of the printed circuit board at its respective free end.
  • the flexibility of the contact between spring plate and contact pin is then significantly improved if, as provided according to the invention, the contact pin axially displaceable in the plug-in coupling or within its isolation is arranged. This allows, as it were, automatically a permanent centering of the contact between the contact pin and spring plate, since depending on the axial load from one side or the other of the pin is able to move accordingly within its plug-in coupling. In this way, the contact between the spring plate and the end of the contact pin is always guaranteed and with full effectiveness.
  • the inventive design of the coaxial connector can be realized with significantly reduced production costs. At the same time it offers the decisive advantage that when the mentioned possible relative movements between the printed circuit boards in the direction of the longitudinal axis of the contact pin and / or transversely thereto, a consistently good contact zone is always ensured. This is due to the fact that due to the aforementioned inventive design of the contact between spring plate and pin even with a tilting and / or a longitudinal displacement of the contact pin is always maintained the desired contact zone.
  • FIG. 1 The drawing apparent coaxial connector is used to connect two circuit boards 1, 2, which is also known as a board-to-board connection.
  • an outer conductor 3 in the form of an outer conductor bushing and an inner conductor 4 are fixed to each printed circuit board 1 or 2.
  • the inner conductor 4 is insulated by means of an insulating part 5 with respect to the outer conductor bushing 3.
  • the circuit boards 1, 2 are electrically connected by means of an adapter 6, said adapter 6 having the form of a sleeve-shaped plug-in coupling.
  • the plug-in coupling 6 has on its outer side a sleeve-shaped outer conductor part 7, which can be brought in the manner shown at its front ends by means of a circumferential annular bead 8 by clamping with the respective outer conductor 3 of the printed circuit boards 1 and 2 respectively.
  • the plug-in coupling 6 also has - in relation to its sleeve-shaped outer conductor part 7 with the interposition of an insulation 9 - an inner conductor part 10 which extends axially centrally within the plug-in coupling 6 and is designed as a contact pin.
  • This contact pin 10 is made such that it is hemispherical at its two ends 11 and protrudes with these hemispherical ends in the manner shown in each case from the plug-in coupling 6.
  • the contact pin 10 is disposed axially displaceable within the insulation 9.
  • the respective inner conductor 4 of the printed circuit boards 1 and 2 is designed as a strip-shaped spring plate, which is fixed at one end under bias to the circuit board 1 and 2 or to the insulation 5 and with its free end 13 at an angle to the longitudinal central axis 12 of Coaxial connector or beyond protrudes. This has the consequence that the contact pin 10 when the plug-in coupling 6 is inserted by clamping into the outer conductor 3 of the printed circuit boards 1 and 2, at its hemispherical ends 11 resiliently with the free end 13 of the respective spring plate 4 of the circuit board 1 and 2 respectively engaged.
  • the free end 13 of the spring plate 4 has an opening 14 which is largely aligned with the axis 12 of the contact pin 10.
  • a more or less circular contact between the edges of the aperture 14 of the spring plate 4 and the rounded end 11 of the contact pin 10 is achieved.
  • the flexibility of contacting and centering is always guaranteed, which is based on the one hand on the basic arrangement of the spring plate 4 and on the other hand on the axial displacement of the contact pin 10.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Transplanting Machines (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Multicomponent Fibers (AREA)

Abstract

A coaxial plug-in connection, particularly for printed circuit boards. An outer and inner conductor are assigned to each board, and can be electrically connected to the outer or inner conductor of the other respective board via a sleeve-shaped plug-in adapter coupling that encompasses a corresponding outer conductor portion and an inner conductor portion. The inner conductor of the printed circuit board is a spring metal sheet, one end of which is fixed to the board or an insulating element, while the other end is free to engage with the inner conductor portion of the plug-in coupling, which is configured as a contact pin.

Description

Die Erfindung betrifft eine Koaxialsteckverbindung, insbesondere für Leiterplatten, gemäß dem Oberbegriff des Anspruchs 1, wie in US 6 497 579 offenbart wurde.The invention relates to a coaxial connector, in particular for printed circuit boards, according to the preamble of claim 1, as in US Pat. No. 6,497,579 was disclosed.

Bei bekannten Koaxialsteckverbindungen dieser Art ( DE 202 08 425.6 ) sind üblicherweise an jeder Leiterplatte wenigstens eine Aussenleiterbuchse mit einem zugeordneten Innenleiter festgelegt. Hierbei weist der Innenleiter einen normalerweise zylinderförmigen Kontaktstift auf, der federnd klemmend in eine entsprechend ausgebildete stirnseitige Ausnehmung des Innenleiterteils eines Adapters in Form einer hülsenförmigen Steckkupplung einsteckbar ist. Die Ausbildung ist derart getroffen, dass ein definierter Luftspalt zwischen Aussenleiterbuchse und Stirnfläche der Steckkupplung belassen wird.In known coaxial connectors of this type ( DE 202 08 425.6 ) are usually fixed to each circuit board at least one outer conductor socket with an associated inner conductor. Here, the inner conductor has a normally cylindrical contact pin, which is resiliently clamped in a correspondingly formed frontal recess of the inner conductor part of an adapter in the form of a sleeve-shaped plug-in connector can be inserted. The design is such that a defined air gap between outer conductor bushing and end face of the plug-in coupling is left.

Obwohl derartige Koaxialsteckverbindungen die an sie gestellten Anforderungen normalerweise ausreichend erfüllen, hat sich dennoch gezeigt, dass einige gravierende Nachteile auftreten, und zwar insbesondere bei den heute zu erwartenden hohen Übertragungsfrequenzen, die bis zu 60 GHz und mehr erreichen können.Although such coaxial plug connections normally meet the requirements placed on them, it has nevertheless been found that some serious disadvantages occur, in particular at the high transmission frequencies expected today, which can reach up to 60 GHz and more.

Diese Nachteile ergeben sich dadurch, dass schon geringfügige Relativbewegungen zwischen den miteinander verbundenen Leiterplatten sowohl in Axialrichtung der Kontaktstifte als auch quer hierzu eine unerwünschte Veränderung der Kontaktzone zwischen dem Kontaktstift des Innenleiters und dem Innenleiterteil der Steckkupplung verursachen. Dies wiederum hat eine unerwünschte Veränderung des durch den definierten Luftspalt vorgegebenen Feldwiderstandes zur Folge, was die Qualität der elektrischen Übertragung entscheidend beeinträchtigt.These disadvantages result from the fact that even slight relative movements between the interconnected printed circuit boards both in the axial direction of the contact pins and transverse thereto cause an undesirable change in the contact zone between the contact pin of the inner conductor and the inner conductor part of the plug-in coupling. This in turn has an undesirable change the predetermined by the defined air gap field resistance result, which affects the quality of the electrical transmission crucial.

Aufgrund dieser nicht zu vermeidenden - wenn auch geringfügigen - Relativbewegungen zwischen den Leiterplatten ist auch bei den bekannten Koaxialsteckverbindungen nicht mehr gewährleistet, dass die sog. Steckwiederholbarkeit gleich bleibt, was gleichfalls als Nachteil angesehen wird.Because of this unavoidable - albeit minor - relative movements between the circuit boards is no longer guaranteed even in the known coaxial connectors that the so-called. Plug Repeatability remains the same, which is also considered a disadvantage.

Hinzu kommt außerdem, daß die Herstellung derartiger Koaxialsteckverbindungen mit einem relativ hohen Aufwand an Zeit und Kosten verbunden ist, da stets bestimmte Verbindungstoleranzen einzuhalten sind, was sich entsprechend auf die Herstellungskosten auswirkt.In addition, in addition, that the production of such Koaxialsteckverbindungen is associated with a relatively high cost of time and costs, as always certain connection tolerances must be adhered to, which has a corresponding effect on the manufacturing cost.

Der Erfindung liegt daher die Aufgabe zugrunde, die Koaxialsteckverbindung der gattungsgemäßen Art zur Beseitigung der geschilderten Nachteile derart auszugestalten, dass deren Steckwiederholbarkeit, insbesondere bei hohen Übertragungsfrequenzen bis zu 60 GHz und mehr, entscheidend verbessert und gleichzeitig bei bedeutend vereinfachter Herstellung unter Vermeidung unerwünschter Durchmessersprünge des Kontaktstiftes eine gleichbleibend gute Kontaktzone gewährleistet ist.The invention is therefore the object of the coaxial connector of the generic type to eliminate the disadvantages described in such a way that their Steckwiederholbarkeit, especially at high transmission frequencies up to 60 GHz and more, significantly improved and at the same time significantly simplified production while avoiding unwanted diameter jumps of the contact pin a consistently good contact zone is ensured.

Diese Aufgabe wird mit der Erfindung durch die Merkmale des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen hiervon sind in den weiteren Ansprüchen aufgeführt.This object is achieved with the invention by the features of claim 1. Advantageous embodiments thereof are listed in the further claims.

Bei der Koaxialsteckverbindung gemäß der Erfindung ist die Ausgestaltung derart getroffen, dass der Innenleiter der Leiterplatte als Federblech ausgestaltet ist, das mit seinem einen Ende an der Leiterplatte bzw. an einer Isolierung festgelegt und an seinem anderen freien Ende mit dem als Kontaktstift ausgebildeten Innenleiterteil der Steckkupplung in Eingriff bringbar ist.In the coaxial connector according to the invention, the design is such that the inner conductor of the circuit board is designed as a spring plate, which fixed at one end to the circuit board or to an insulation and at its other free end with the formed as a contact pin inner conductor part of the plug-in coupling can be brought into engagement.

In vorteilhafter Ausgestaltung der Erfindung ist das Federblech laschenartig bzw. streifenförmig ausgebildet, was eine einfache Herstellung gewährleistet.In an advantageous embodiment of the invention, the spring plate is formed tab-like or strip-shaped, which ensures easy production.

Eine stets gute Kontaktierung zwischen dem Innenleiter der Leiterplatte und dem als Kontaktstift ausgebildeten Innenleiterteil der Steckkupplung ist dann gewährleistet, wenn - wie erfindungsgemäß weiterhin vorgesehen - das Federblech unter Vorspannung festgelegt ist.An always good contact between the inner conductor of the circuit board and designed as a contact pin inner conductor portion of the plug-in coupling is then guaranteed if - as inventively further provided - the spring plate is set under bias.

Zweckmäßigerweise ragt das freie Ende des Federblechs winklig in die Achse des Kontaktstiftes der Steckkupplung hinein. Aus diesem Grund müssen keine besonderen Maßnahmen getroffen werden, um stets eine Kontaktierung zwischen Federblech der Leiterplatte und Kontaktstift der Steckkupplung zu gewährleisten.Conveniently, the free end of the spring plate protrudes into the axis of the contact pin of the plug-in coupling at an angle. For this reason, no special measures must be taken to always ensure a contact between the spring plate of the circuit board and contact pin of the plug-in coupling.

Wenn das Federblech, wie dargelegt, laschenartig bzw. streifenförmig ausgebildet ist, steht das freie Ende des Federblechs üblicherweise mittels Punktberührung in Kontakt mit dem jeweiligen Ende des Kontaktstiftes. Hierbei liegt es im Rahmen der Erfindung, am freien Ende des Federblechs auch eine Durchbrechung vorzusehen, die weitgehend mit der Achse des Kontaktstiftes fluchtet. Hierdurch ergibt sich dann eine linienförmige, üblicherweise kreisringförmige, Kontaktierung zwischen Federblech und Kontaktstift.If the spring plate, as stated, is formed tab-like or strip-shaped, the free end of the spring plate is usually by means of point contact in contact with the respective end of the contact pin. It is within the scope of the invention to provide an opening at the free end of the spring plate, which is largely aligned with the axis of the contact pin. This results in a line-shaped, usually annular, contact between spring plate and contact pin.

Die Herstellungskosten der erfindungsgemäßen Koaxialsteckverbindung werden dann entscheidend weiter verringert, wenn gemäß einer weiteren erfindungsgemäßen Ausgestaltung der Kontaktstift der Steckkupplung abgerundete bzw. kugelige, insbesondere halbkugelige, Enden aufweist. Ein derartiger Kontaktstift läßt sich mit geringst möglichem Herstellungsaufwand herstellen und gewährleistet gleichzeitig, daß die Kontaktierung zwischen seinen Enden und dem jeweiligen freien Ende des Federblechs stets mit höchstem Wirkungsgrad erreicht wird.The production costs of the coaxial connector according to the invention are then significantly further reduced if, according to a further embodiment of the invention, the contact pin of the plug-in coupling has rounded or spherical, in particular hemispherical, ends. Such a contact pin can be produced with the least possible manufacturing effort and at the same time ensures that the contact between its ends and the respective free end of the spring plate is always achieved with the highest efficiency.

Zweckmäßigerweise weist der Kontaktstift eine solche Länge auf, daß er bei in den buchsenförmigen Außenleiter der Leiterplatte klemmend eingesteckter Steckkupplung an seinem jeweiligen freien Ende federnd mit dem freien Ende des Federblechs in Eingriff steht.Conveniently, the contact pin has a length such that it is resiliently engaged with the free end of the spring plate at plug-in coupling plugged into the socket-shaped outer conductor of the printed circuit board at its respective free end.

Die Flexibilität der Kontaktierung zwischen Federblech und Kontaktstift ist dann entscheidend weiter verbessert, wenn, wie erfindungsgemäß vorgesehen, der Kontaktstift axial verschiebbar in der Steckkupplung bzw. innerhalb seiner Isolierung angeordnet ist. Dies ermöglicht gleichsam selbsttätig eine ständige Zentrierung der Kontaktierung zwischen Kontaktstift und Federblech, da je nach axialer Belastung von der einen oder anderen Seite der Kontaktstift in der Lage ist, sich innerhalb seiner Steckkupplung entsprechend zu verschieben. Auf diese Weise wird die Kontaktierung zwischen Federblech und dem Ende des Kontaktstiftes stets und mit voller Wirksamkeit gewährleistet.The flexibility of the contact between spring plate and contact pin is then significantly improved if, as provided according to the invention, the contact pin axially displaceable in the plug-in coupling or within its isolation is arranged. This allows, as it were, automatically a permanent centering of the contact between the contact pin and spring plate, since depending on the axial load from one side or the other of the pin is able to move accordingly within its plug-in coupling. In this way, the contact between the spring plate and the end of the contact pin is always guaranteed and with full effectiveness.

Die erfindungsgemäße Ausbildung der Koaxialsteckverbindung läßt sich mit beträchtlich verringerten Herstellungskosten verwirklichen. Sie bietet gleichzeitig den entscheidenden Vorteil, daß beim Auftreten der erwähnten möglichen Relativbewegungen zwischen den Leiterplatten in Richtung der Längsachse des Kontaktstiftes und/oder quer hierzu stets eine gleichbleibend gute Kontaktzone gewährleistet ist. Dies beruht darauf, daß aufgrund der erwähnten erfindungsgemäßen Ausbildung der Kontaktierung zwischen Federblech und Kontaktstift selbst bei einem Verkippen und/oder bei einer Längsverschiebung des Kontaktstiftes stets die erwünschte Kontaktzone beibehalten wird.The inventive design of the coaxial connector can be realized with significantly reduced production costs. At the same time it offers the decisive advantage that when the mentioned possible relative movements between the printed circuit boards in the direction of the longitudinal axis of the contact pin and / or transversely thereto, a consistently good contact zone is always ensured. This is due to the fact that due to the aforementioned inventive design of the contact between spring plate and pin even with a tilting and / or a longitudinal displacement of the contact pin is always maintained the desired contact zone.

Schließlich ist hierdurch auch die Steckwiederholbarkeit der gesamten Koaxialsteckverbindung nicht nur verbessert, sondern auch in stets gleichbleibender Qualität gewährleistet.Finally, this also not only improves the plug-in repeatability of the entire coaxial connector, but also ensures consistent quality.

Die Erfindung wird im Folgenden anhand der Zeichnung näher erläutert. Hierbei zeigen:

Fig. 1
ein bevorzugtes Ausführungsbeispiel der erfindungsgemäßen Koaxialsteckverbindung im Querschnitt und
Fig. 2
im Detail eine abgewandelte Ausführungsform.
The invention will be explained in more detail below with reference to the drawing. Hereby show:
Fig. 1
A preferred embodiment of the coaxial connector according to the invention in cross section and
Fig. 2
in detail a modified embodiment.

Die aus Fig. 1 der Zeichnung ersichtliche Koaxialsteckverbindung dient zur Verbindung zweier Leiterplatten 1, 2, die auch als Board-to-Board-Verbindung bekannt ist.From Fig. 1 The drawing apparent coaxial connector is used to connect two circuit boards 1, 2, which is also known as a board-to-board connection.

Hierbei sind an jeder Leiterplatte 1 bzw. 2 ein Aussenleiter 3 in Form einer Aussenleiterbuchse sowie ein Innenleiter 4 festgelegt. Der Innenleiter 4 ist mittels eines Isolierteils 5 gegenüber der Aussenleiterbuchse 3 isoliert.In this case, an outer conductor 3 in the form of an outer conductor bushing and an inner conductor 4 are fixed to each printed circuit board 1 or 2. The inner conductor 4 is insulated by means of an insulating part 5 with respect to the outer conductor bushing 3.

Die Leiterplatten 1, 2 sind mittels eines Adapters 6 elektrisch verbindbar, wobei dieser Adapter 6 die Form einer hülsenförmigen Steckkupplung aufweist. Die Steckkupplung 6 besitzt an ihrer Aussenseite ein hülsenförmiges Aussenleiterteil 7, das in der dargestellten Weise an seinen stirnseitigen Enden mittels eines umlaufenden Ringwulstes 8 klemmend mit der jeweiligen Aussenleiterbuchse 3 der Leiterplatten 1 bzw. 2 in Eingriff bringbar ist.The circuit boards 1, 2 are electrically connected by means of an adapter 6, said adapter 6 having the form of a sleeve-shaped plug-in coupling. The plug-in coupling 6 has on its outer side a sleeve-shaped outer conductor part 7, which can be brought in the manner shown at its front ends by means of a circumferential annular bead 8 by clamping with the respective outer conductor 3 of the printed circuit boards 1 and 2 respectively.

Die Steckkupplung 6 weist ausserdem - in Bezug auf ihr hülsenförmiges Aussenleiterteil 7 unter Zwischenschaltung einer Isolierung 9 - ein Innenleiterteil 10 auf, das axial mittig innerhalb der Steckkupplung 6 verläuft und als Kontaktstift ausgebildet ist. Die spezielle Ausbildung dieses Kontaktstiftes 10 ist derart getroffen, daß er an seinen beiden Enden 11 halbkugelförmig ausgebildet ist und mit diesen halbkugelförmigen Enden in der dargestellten Weise jeweils aus der Steckkupplung 6 herausragt.The plug-in coupling 6 also has - in relation to its sleeve-shaped outer conductor part 7 with the interposition of an insulation 9 - an inner conductor part 10 which extends axially centrally within the plug-in coupling 6 and is designed as a contact pin. The special design of this contact pin 10 is made such that it is hemispherical at its two ends 11 and protrudes with these hemispherical ends in the manner shown in each case from the plug-in coupling 6.

Bei der dargestellten Ausführungsform ist der Kontaktstift 10 axial verschiebbar innerhalb der Isolierung 9 angeordnet.In the illustrated embodiment, the contact pin 10 is disposed axially displaceable within the insulation 9.

Der jeweilige Innenleiter 4 der Leiterplatten 1 bzw. 2 ist als streifenförmiges Federblech ausgestaltet, das mit seinem einen Ende unter Vorspannung an der Leiterplatte 1 bzw. 2 bzw. an der Isolierung 5 festgelegt ist und mit seinem freien Ende 13 winklig in die Längsmittelachse 12 der Koaxialsteckverbindung bzw. darüber hinaus ragt. Dies hat zur Folge, daß der Kontaktstift 10 dann, wenn die Steckkupplung 6 klemmend in die Aussenleiterbuchsen 3 der Leiterplatten 1 bzw. 2 eingesteckt ist, an seinen halbkugelförmigen Enden 11 federnd mit dem freien Ende 13 des jeweiligen Federblechs 4 der Leiterplatte 1 bzw. 2 in Eingriff steht.The respective inner conductor 4 of the printed circuit boards 1 and 2 is designed as a strip-shaped spring plate, which is fixed at one end under bias to the circuit board 1 and 2 or to the insulation 5 and with its free end 13 at an angle to the longitudinal central axis 12 of Coaxial connector or beyond protrudes. This has the consequence that the contact pin 10 when the plug-in coupling 6 is inserted by clamping into the outer conductor 3 of the printed circuit boards 1 and 2, at its hemispherical ends 11 resiliently with the free end 13 of the respective spring plate 4 of the circuit board 1 and 2 respectively engaged.

Aufgrund dieser damit erzielten ständigen elastisch federnden Verbindung zwischen dem freien Ende 13 des Federblechs 4 und dem Kugelende 11 des Kontaktstiftes 10 ist somit gewährleistet, daß unabhängig von den stets auftretenden Relativbewegungen zwischen den Leiterplatten 1, 2 sowohl in Längs- als auch in Querrichtung immer eine wirkungsvolle Kontaktierung und damit elektrische Verbindung erreicht ist. Diese Wirkung wird noch dadurch verstärkt, daß der Kontaktstift 10, wie erwähnt, axial verschiebbar innerhalb der Steckkupplung 6 angeordnet ist.Due to this thus achieved permanent resilient connection between the free end 13 of the spring plate 4 and the ball end 11 of the contact pin 10 is thus ensured that regardless of the always occurring Relative movements between the circuit boards 1, 2 in both the longitudinal and in the transverse direction always an effective contact and thus electrical connection is achieved. This effect is further enhanced by the fact that the contact pin 10, as mentioned, is arranged axially displaceable within the plug-in coupling 6.

Bei der abgewandelten Ausführungsform gemäß Fig. 2 weist das freie Ende 13 des Federblechs 4 eine Durchbrechung 14 auf, die weitgehend mit der Achse 12 des Kontaktstiftes 10 fluchtet. Hierdurch wird im Unterschied zu der Ausführungsform gemäß Fig. 1, bei der weitgehend eine Punktberührung zwischen dem freien Ende 13 des Federblechs 4 und dem abgerundeten Ende 11 des Kontaktstiftes 10 erreicht wird, eine mehr oder weniger kreislinienförmige Berührung zwischen den Kanten der Durchbrechung 14 des Federblechs 4 und dem abgerundeten Ende 11 des Kontaktstiftes 10 erzielt. Gleichzeitig wird jedoch stets die Flexibilität der Kontaktierung sowie deren Zentrierung gewährleistet, was einerseits auf der grundsätzlichen Anordnung des Federblechs 4 sowie andererseits auf der axialen Verschiebbarkeit des Kontaktstiftes 10 beruht.In the modified embodiment according to Fig. 2 the free end 13 of the spring plate 4 has an opening 14 which is largely aligned with the axis 12 of the contact pin 10. As a result, in contrast to the embodiment according to Fig. 1 in which largely a point contact between the free end 13 of the spring plate 4 and the rounded end 11 of the contact pin 10 is achieved, a more or less circular contact between the edges of the aperture 14 of the spring plate 4 and the rounded end 11 of the contact pin 10 is achieved. At the same time, however, the flexibility of contacting and centering is always guaranteed, which is based on the one hand on the basic arrangement of the spring plate 4 and on the other hand on the axial displacement of the contact pin 10.

Hinsichtlich vorstehend nicht näher erläuterter Merkmale der Erfindung wird im übrigen ausdrücklich auf die Zeichnung sowie die Ansprüche verwiesen.With regard to the above unspecified explained features of the invention, reference is expressly made otherwise to the drawings and the claims.

Claims (8)

  1. Coaxial plug-and-socket connector for printed circuit boards (a board-to-board connector), having an outer conductor and centre conductor (3, 4) associated with each printed circuit board (1 and 2) which can be connected electrically to the outer conductor and centre conductor (3, 4) respectively of the other printed circuit board (2 and 1) concerned by means of an adapter in the form of a sleeve-like plug-in coupler (6) which has a corresponding outer-conductor member (7) and centre-conductor member (10), characterised in that the centre conductor of the printed circuit board (1, 2) is in the form of a resilient member of planar form (4) which is held in place at the printed circuit board (1, 2) or at an insulator (5) at one of its ends and at its other, free end (13) can be brought into engagement with the centre-conductor member of the plug-in coupler (6), which centre-conductor member is in the form of a contact pin (10).
  2. Coaxial plug-and-socket connector according to claim 1, characterised in that the resilient member of planar form (4) is of a tongue-like or strip-like form.
  3. Coaxial plug-and-socket connector according to claim 1 or 2, characterised in that the resilient member of planar form (4) is held in place under preloading.
  4. Coaxial plug-and-socket connector according to one of the foregoing claims, characterised in that the free end (13) of the resilient member of planar form (4) projects onto the axis (12) of the contact pin (10) of the plug-in coupler (6) at an angle.
  5. Coaxial plug-and-socket connector according to one of the foregoing claims, characterised in that the free end (13) of the resilient member of planar form (4) has a perforation (14) which is largely in line with the axis (12) of the contact pin (10).
  6. Coaxial plug-and-socket connector according to one of the foregoing claims, characterised in that the contact pin (10) has rounded or spherical and in particular hemispherical ends (11).
  7. Coaxial plug-and-socket connector according to one of the foregoing claims, characterised in that the contact pin (10) is of a length such that, when the plug-in coupler (6) is inserted and held in the outer conductor (3) in socket form of the printed circuit board (1, 2), the said contact pin (10) engages resiliently, at whichever of its free ends (11) is considered, with the free end (13) of the resilient member of planar form (4).
  8. Coaxial plug-and-socket connector according to one of the foregoing claims, characterised in that the contact pin (10) is arranged to be axially displaceable in the plug-in coupler (6).
EP05737701A 2004-04-02 2005-03-21 Coaxial plug-in connection for printed boards, featuring spring-loaded tolerance compensation Expired - Lifetime EP1730815B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004005273U DE202004005273U1 (en) 2004-04-02 2004-04-02 Coaxial connector for printed circuit boards with spring-loaded tolerance compensation
PCT/EP2005/002994 WO2005096444A1 (en) 2004-04-02 2005-03-21 Coaxial plug-in connection for printed boards, featuring spring-loaded tolerance compensation

Publications (2)

Publication Number Publication Date
EP1730815A1 EP1730815A1 (en) 2006-12-13
EP1730815B1 true EP1730815B1 (en) 2009-05-27

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EP05737701A Expired - Lifetime EP1730815B1 (en) 2004-04-02 2005-03-21 Coaxial plug-in connection for printed boards, featuring spring-loaded tolerance compensation

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US (1) US7210941B2 (en)
EP (1) EP1730815B1 (en)
JP (1) JP4560542B2 (en)
CN (1) CN100414778C (en)
AT (1) ATE432544T1 (en)
CA (1) CA2560233C (en)
DE (2) DE202004005273U1 (en)
WO (1) WO2005096444A1 (en)

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Also Published As

Publication number Publication date
DE202004005273U1 (en) 2004-06-03
CN100414778C (en) 2008-08-27
JP2007531223A (en) 2007-11-01
JP4560542B2 (en) 2010-10-13
EP1730815A1 (en) 2006-12-13
WO2005096444A1 (en) 2005-10-13
CA2560233C (en) 2012-09-04
US7210941B2 (en) 2007-05-01
CN1938905A (en) 2007-03-28
HK1098582A1 (en) 2007-07-20
ATE432544T1 (en) 2009-06-15
CA2560233A1 (en) 2005-10-13
US20070026698A1 (en) 2007-02-01
DE502005007354D1 (en) 2009-07-09

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