EP0741436A1 - Device for electrical connection - Google Patents

Device for electrical connection Download PDF

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Publication number
EP0741436A1
EP0741436A1 EP95810793A EP95810793A EP0741436A1 EP 0741436 A1 EP0741436 A1 EP 0741436A1 EP 95810793 A EP95810793 A EP 95810793A EP 95810793 A EP95810793 A EP 95810793A EP 0741436 A1 EP0741436 A1 EP 0741436A1
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EP
European Patent Office
Prior art keywords
conductor
intermediate piece
inner conductor
contact part
coaxial cable
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.)
Ceased
Application number
EP95810793A
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German (de)
French (fr)
Inventor
Josef Fuchs
Ulf Hügel
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.)
Huber and Suhner AG
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Huber and Suhner AG
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Filing date
Publication date
Application filed by Huber and Suhner AG filed Critical Huber and Suhner AG
Publication of EP0741436A1 publication Critical patent/EP0741436A1/en
Ceased 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
    • 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
    • H01R24/56—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 specially adapted to a specific shape of cables, e.g. corrugated cables, twisted pair cables, cables with two screens or hollow cables
    • H01R24/564—Corrugated 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
    • 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
    • H01R24/56—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 specially adapted to a specific shape of cables, e.g. corrugated cables, twisted pair cables, cables with two screens or hollow cables
    • H01R24/566—Hollow 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
    • H01R2103/00—Two poles

Definitions

  • the invention relates to a device for electrically connecting a particularly hollow conductor of a coaxial cable to a conductor of a coaxial connector.
  • a device of this type is known for example from EP-A-0551092.
  • the cable is just cut through at the end to be connected.
  • a spring bushing is arranged in the coaxial connector, which is pushed onto a pin inserted into the inner conductor.
  • connection point of the spring bushing with the inner conductor of the coaxial cable is often a fault point and the electrical one Properties of this connection point can change with the insertion depth of the spring bush.
  • temperature changes and mechanical influences can impair the stability of the connection between the two inner conductors.
  • the invention has for its object to provide a device of the type mentioned, which largely avoids the disadvantages mentioned and which still allows easy assembly of the coaxial connector.
  • the device should be suitable for different coaxial cables and also for different coaxial connectors.
  • the device should also ensure more reliably than before that electrical data are retained unchanged even under a variety of mechanical and climatic loads.
  • the object is achieved in a generic device by a bellows-type intermediate piece which is resiliently connected to the conductor of the coaxial cable or to the conductor of the coaxial connector.
  • the intermediate piece can rest directly on the separated and preferably funnel-widened end of the conductor.
  • the conductor of the coaxial cable has an attached contact part which engages in the cavity of the conductor and against which the intermediate piece bears.
  • the contact surface of the contact part is preferably conical or funnel-shaped. This part can for example be anchored in the cavity of the conductor by means of an expansion sleeve and seal the cavity.
  • the invention is based on the idea that, in the high-frequency range, the current is essentially conducted to the surface and, in the case of a bellows-shaped intermediate piece, a change in the arching distance of the bellows with a change in length has a significantly smaller influence on the wave resistance than a change in the insertion depth in a spring bushing.
  • the elasticity of the intermediate piece can be comparatively small, for example in the range of a few millimeters.
  • the length of the intermediate piece is dimensioned such that it is compressed in the longitudinal direction during assembly of the coaxial connector and, when compressed, is elastic at least in a range of a few millimeters.
  • the device according to the invention enables assembly with known coaxial connectors and does not require any soldering work or other complex processing steps. It is also essential that the fact that the intermediate piece can be bent transversely to its longitudinal direction hardly influences geometric misalignments in the electrical contact.
  • the invention also relates to a coaxial connector with a coaxial cable connected to it, for example with a hollow inner conductor, which is electrically conductively connected to a plug socket or a plug pin of the coaxial connector.
  • a coaxial connector with a coaxial cable connected to it, for example with a hollow inner conductor, which is electrically conductively connected to a plug socket or a plug pin of the coaxial connector.
  • this is characterized by a longitudinally compressed and bellows-like intermediate piece, which rests at one end on the end face and resiliently on the inner conductor of the coaxial cable.
  • the compressed intermediate piece rests under tension on the inner conductor of the coaxial cable. Changes in length or displacements due to mechanical influences are absorbed by the elasticity of the intermediate piece.
  • it is essential that changes in the curvature distance in the intermediate piece have hardly any influence on the wave resistance and thus a high stability is guaranteed.
  • FIG. 1 shows one end of a coaxial cable 1 known per se, which has an outer insulation sleeve 2, a corrugated tube 3 as an outer conductor, a dielectric 4 and a preferably hollow inner conductor 5.
  • the coaxial cable 1 is preferably a high-frequency cable.
  • a coaxial connector 6 attached to the coaxial cable 1 has a housing 7, into which a sleeve 8 is inserted, which is fixed by means of a nut 10 for fixing the corrugated tube 3 to the housing 7.
  • a sleeve 8 is inserted into which a sleeve 8 is inserted, which is fixed by means of a nut 10 for fixing the corrugated tube 3 to the housing 7.
  • An inner conductor 14 is fixed in a cylindrical through opening 13 of the housing 7 by means of a dielectric holding part 16. A longitudinal displacement of the inner conductor 14 in part 16 is prevented by a radially projecting collar 15.
  • the inner conductor 14 is designed at one end as a spring bushing and can receive a plug pin, not shown here.
  • the inner conductor 14 has a radially outwardly projecting flange 17 to which a bellows-shaped intermediate piece 25 is fastened.
  • an externally bent clamping collar 19 is integrally formed on the flange 17 according to FIG. 2. The clamping collar 19 fixes an inwardly bent annular edge 28 of the intermediate piece 25 to a conical contact surface 30 of the flange 17. The intermediate piece 25 is thus firmly connected to the inner conductor 14 and securely supported thereon.
  • the other end of the intermediate piece 25 has an inwardly directed edge 27 which forms a circular opening 29. Between the two edges 28 and 27, the intermediate piece 25 is hollow throughout and rotationally symmetrical. Several revolving wave crests 26 alternate with wave troughs 31. However, a version is also conceivable which the wave crests 26 and the wave troughs 31 have a shape other than that shown or are arranged in a spiral.
  • the intermediate piece 25 is preferably in one piece and made from a comparatively thin-walled piece of pipe. In its longitudinal direction, the intermediate piece 25 is resilient and can be shortened in the longitudinal direction by compression, for example from a total length of 20 mm to 16 mm.
  • the intermediate piece 25 is also elastically resilient in the longitudinal direction in the shortened or compressed state, for example in a range of 2-3 mm.
  • Suitable materials for producing the intermediate piece 25 are, for example, copper beryllium alloys or steel alloys. However, other materials are also conceivable, for example conductive plastics. 1 shows the intermediate piece 25 in the compressed state.
  • the annular edge 27 here rests under elastic tension on a conical contact surface 21 of a contact part 20.
  • This contact part 20 is inserted into a cavity 32 of the conductor 5 and rests with a shoulder 33 on the frontal cut surface 34 of the inner conductor 5.
  • an expansion sleeve 23 is arranged between this and a further part 22, which is held under tension by means of a screw 24.
  • the parts 33, 22 and 23 simultaneously seal the cavity 32 from the outside.
  • the intermediate piece becomes 25 either shortened against its retroactive spring force or this lengthens due to its spring action.
  • the changes in length on the intermediate piece 25 are generally very small, in particular less than 1 mm. Eccentricities are also compensated for by the corresponding spring action of the intermediate piece 25.
  • the shortening of the intermediate piece 25 takes place automatically when the housing 7 is placed on the coaxial cable 1. It is essential that when the length of the intermediate piece 25 changes, the distances between the wave crests 26, but not the contact points, change.
  • the intermediate piece 25 connects two inner conductors.
  • the intermediate piece 25 connects two outer conductors to one another.
  • the embodiment shown in FIGS. 3 and 4 differs from the one mentioned above by the pin 40, which is detachably inserted into the inner conductor 5 and against which the bellows-like intermediate piece 25 rests under resilient tension on the end face.
  • the pin 40 has a hollow cylindrical sealing part 44 made of, for example, silicone rubber, which is arranged under axial pressure between an expanding sleeve 45 knurled on the outside and a connecting part 46.
  • a threaded pin 47 is attached to part 46, with which a spreading cone 48 is held in the spreading sleeve 45, which is spread radially against the inner conductor 5. The axial hold and the tightness of the pin 40 is ensured even with a smooth inner conductor 5.
  • a crown-shaped contact part 41 is movably mounted on an end of the pin 40 protruding from the inner conductor with a tightening screw 43 which engages in an axial threaded bore 49 of the connecting part 46.
  • the contact part 41 engages with a fork-shaped projection 50 with time play in a slot 51 of the connecting part 46 and also receives the shaft 53 of the pull-out screw 43 in an axial through bore 52 with radial play. Both the sealing element 44 and the expansion sleeve 45 can be clamped radially with the inner conductor bore via the crown 41.

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  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

The connector device connects a hollow conductor (5) of a coaxial cable (1) with a conductor (14) of a coaxial connector. The device has a bellows type intermediate piece (25). This is in sprung connection with the conductor (5) of the coaxial cable (1) or with the conductor (14) of the coaxial connector (6). The bellows member (25) may be shortened by buckling and is connected at one end with the conductor. The bellows member is preferably spring biased in its compressed position. A contact part may be inserted in the hollow space of the coaxial cable inner conductor. The intermediate member is electrically connected to this contact part and seals it. The contact part may be fixedly connected to the inner conductor by an expanding member. The inner conductor may be fixedly connected to the intermediate bellows member.

Description

Die Erfindung betrifft eine Vorrichtung zum elektrischen Verbinden eines insbesondere hohlen Leiters eines Koaxialkabels mit einem Leiter eines Koaxialverbinders.The invention relates to a device for electrically connecting a particularly hollow conductor of a coaxial cable to a conductor of a coaxial connector.

Eine Vorrichtung dieser Gattung ist beispielsweise aus der EP-A-0551092 bekannt. Zum Anschliessen eines Koaxialkabels an einen Koaxialverbinder wird hier das Kabel am anzuschliessenden Ende gerade durchgetrennt. Zum Verbinden des abgetrennten Innenleiters mit dem Innenleiter des Koaxialverbinders ist im Koaxialverbinder eine Federbuchse angeordnet, die auf einen in den Innenleiter eingesetzten Zapfen aufgeschoben wird. In der Praxis hat sich gezeigt, dass im Hochfrequenzbereich die Verbindungsstelle der Federbuchse mit dem Innenleiter des Koaxialkabels oft eine Störstelle ist und die elektrischen Eigenschaften dieser Verbindungsstelle sich mit der Einstecktiefe der Federbuchse ändern können. Ferner können Temperaturänderungen sowie mechanische Einwirkungen die Stabilität der Verbindung zwischen den beiden Innenleitern beeinträchtigen.A device of this type is known for example from EP-A-0551092. To connect a coaxial cable to a coaxial connector, the cable is just cut through at the end to be connected. In order to connect the separated inner conductor to the inner conductor of the coaxial connector, a spring bushing is arranged in the coaxial connector, which is pushed onto a pin inserted into the inner conductor. In practice it has been shown that in the high-frequency range the connection point of the spring bushing with the inner conductor of the coaxial cable is often a fault point and the electrical one Properties of this connection point can change with the insertion depth of the spring bush. Furthermore, temperature changes and mechanical influences can impair the stability of the connection between the two inner conductors.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der genannten Gattung zu schaffen, welche die genannten Nachteile weitgehend vermeidet und die dennoch eine einfache Montage des Koaxialverbinders erlaubt. Die Vorrichtung soll sich für unterschiedliche Koaxialkabel und auch für unterschiedliche Koaxialverbinder eignen. Die Vorrichtung soll zudem zuverlässiger als bisher gewährleisten, dass elektrische Daten auch unter vielfältiger mechanischer und klimatischer Beanspruchung unverändert beibehalten werden.The invention has for its object to provide a device of the type mentioned, which largely avoids the disadvantages mentioned and which still allows easy assembly of the coaxial connector. The device should be suitable for different coaxial cables and also for different coaxial connectors. The device should also ensure more reliably than before that electrical data are retained unchanged even under a variety of mechanical and climatic loads.

Die Aufgabe ist bei einer gattungsgemässen Vorrichtung gelöst durch ein balgartiges Zwischenstück, das federnd mit dem Leiter des Koaxialkabels bzw. mit dem Leiter des Koaxialverbinders verbunden ist. Das Zwischenstück kann unmittelbar am abgetrennten und vorzugsweise trichterförmig aufgeweiteten Ende des Leiters anliegen. Nach einer Weiterbildung der Erfindung weist der Leiter des Koaxialkabels einen aufgesetzten Kontaktteil auf, der in den Hohlraum des Leiters eingreift und an den das Zwischenstück anliegt. Die Kontaktfläche des Kontaktteils ist vorzugsweise konisch oder trichterförmig ausgebildet. Dieser Teil kann beispielsweise mittels einer Spreizhülse im Hohlraum des Leiters verankert sein und den Hohlraum abdichten.The object is achieved in a generic device by a bellows-type intermediate piece which is resiliently connected to the conductor of the coaxial cable or to the conductor of the coaxial connector. The intermediate piece can rest directly on the separated and preferably funnel-widened end of the conductor. According to a development of the invention, the conductor of the coaxial cable has an attached contact part which engages in the cavity of the conductor and against which the intermediate piece bears. The contact surface of the contact part is preferably conical or funnel-shaped. This part can for example be anchored in the cavity of the conductor by means of an expansion sleeve and seal the cavity.

Der Erfindung liegt der Gedanke zugrunde, dass im Hochfrequenzbereich der Strom im wesentlichen an der Oberfläche geleitet wird und bei einem balgförmigen Zwischenstück eine Aenderung des Wölbungsabstandes des Balges bei einer Längenänderung einen wesentlich kleineren Einfluss auf den Wellenwiderstand hat als eine Aenderung der Einstecktiefe bei einer Federbuchse. Die Elastizität des Zwischenstücks kann vergleichsweise klein sein und beispielsweise im Bereich von wenigen Millimetern liegen. Die Länge des Zwischenstücks ist so bemessen, dass dieses bei der Montage des Koaxialverbinders in Längsrichtung gestaucht wird und im gestauchten Zustand wenigstens in einem Bereich von wenigen Millimetern elastisch ist. Die erfindungsgemässe Vorrichtung ermoglicht eine Montage mit an sich bekannten Koaxialverbindern und erfordert keine Lötarbeit oder sonst aufwendige Bearbeitungsschritte. Wesentlich ist auch, dass dadurch, dass das Zwischenstück quer zu seiner Längsrichtung biegbar ist, geometrische Fehlstellungen den elektrischen Kontakt kaum beeinflussen.The invention is based on the idea that, in the high-frequency range, the current is essentially conducted to the surface and, in the case of a bellows-shaped intermediate piece, a change in the arching distance of the bellows with a change in length has a significantly smaller influence on the wave resistance than a change in the insertion depth in a spring bushing. The elasticity of the intermediate piece can be comparatively small, for example in the range of a few millimeters. The length of the intermediate piece is dimensioned such that it is compressed in the longitudinal direction during assembly of the coaxial connector and, when compressed, is elastic at least in a range of a few millimeters. The device according to the invention enables assembly with known coaxial connectors and does not require any soldering work or other complex processing steps. It is also essential that the fact that the intermediate piece can be bent transversely to its longitudinal direction hardly influences geometric misalignments in the electrical contact.

Die Erfindung betrifft ebenfalls einen Koaxialverbinder mit einem an diesen angeschlossenen Koaxialkabel mit einem beispielsweise hohlen Innenleiter, der elektrisch leitend mit einer Steckerbuchse oder einem Steckerstift des Koaxialverbinders verbunden ist. Zur Losung der oben genannten Aufgabe ist dieser gekennzeichnet durch ein in Längsrichtung gestauchtes und balgartiges Zwischenstück, das an seinem einen Ende stirnseitig und federnd am Innenleiter des Koaxialkabels anliegt. Das gestauchte Zwischenstück liegt unter Spannung federnd am Innenleiter des Koaxialkabels an. Längenänderungen oder -verschiebungen infolge mechanischer Einflüsse werden durch die Elastizität des Zwischenstücks aufgenommen. Auch hier ist wesentlich, dass Aenderungen des Wölbungsabstandes beim Zwischenstück kaum einen Einfluss auf den Wellenwiderstand ausüben und somit eine hohe Stabilität gewährleistet ist.The invention also relates to a coaxial connector with a coaxial cable connected to it, for example with a hollow inner conductor, which is electrically conductively connected to a plug socket or a plug pin of the coaxial connector. To solve the above problem, this is characterized by a longitudinally compressed and bellows-like intermediate piece, which rests at one end on the end face and resiliently on the inner conductor of the coaxial cable. The compressed intermediate piece rests under tension on the inner conductor of the coaxial cable. Changes in length or displacements due to mechanical influences are absorbed by the elasticity of the intermediate piece. Here, too, it is essential that changes in the curvature distance in the intermediate piece have hardly any influence on the wave resistance and thus a high stability is guaranteed.

Zwei Ausführungsbeispiele der erfindungsgemässen Vorrichtung werden nachfolgend anhand der Zeichnung näher erläutert. Es zeigen:

Figur 1
Einen Längsschnitt durch einen Koaxialverbinder und ein Ende eines Koaxialkabels,
Figur 2
eine teilweise geschnittene Ansicht einer erfindungsgemässen Vorrichtung,
Figur 3
ein Längsschnitt durch eine erfindungsgemässe Vorrichtung gemäss einer Variante, und
Figur 4
eine Ansicht eines Teils der Vorrichtung nach Figur 3.
Two exemplary embodiments of the device according to the invention are explained in more detail below with reference to the drawing. Show it:
Figure 1
A longitudinal section through a coaxial connector and one end of a coaxial cable,
Figure 2
2 shows a partially sectioned view of a device according to the invention,
Figure 3
a longitudinal section through an inventive device according to a variant, and
Figure 4
3 shows a view of part of the device according to FIG. 3.

Die Figur 1 zeigt ein Ende eines an sich bekannten Koaxialkabels 1, das eine äussere Isolationshülle 2, ein Wellrohr 3 als äusserer Leiter, ein Dielektrikum 4 sowie einen vorzugsweise hohlen Innenleiter 5 aufweist. Das Koaxialkabel 1 ist vorzugsweise ein Hochfrequenzkabel.FIG. 1 shows one end of a coaxial cable 1 known per se, which has an outer insulation sleeve 2, a corrugated tube 3 as an outer conductor, a dielectric 4 and a preferably hollow inner conductor 5. The coaxial cable 1 is preferably a high-frequency cable.

Ein am Koaxialkabel 1 angebrachter Koaxialverbinder 6 besitzt ein Gehäuse 7, in das eine Hülse 8 eingesetzt ist, welche zur Fixierung des Wellrohrs 3 am Gehäuse 7 mittels einer Mutter 10 festgelegt ist. Soweit ist der Verbinder 6 an sich bekannt.A coaxial connector 6 attached to the coaxial cable 1 has a housing 7, into which a sleeve 8 is inserted, which is fixed by means of a nut 10 for fixing the corrugated tube 3 to the housing 7. As far as the connector 6 is known per se.

In eine zylindrische Durchgangsöffnung 13 des Gehäuses 7 ist ein Innenleiter 14 mittels eines dielektrischen Halteteils 16 fixiert. Eine Längsverschiebung des Innenleiters 14 im Teil 16 ist durch einen radial abstehenden Kragen 15 verhindert. Der Innenleiter 14 ist wie ersichtlich an einem Ende als Federbuchse ausgebildet und kann einen hier nicht gezeigten Steckerstift aufnehmen. An der Innenseite des Teiles 16 weist der Innenleiter 14 einen radial nach aussen ragenden Flansch 17 auf, an dem ein balgförmiges Zwischenstück 25 befestigt ist. Dazu ist am Flansch 17 gemäss Figur 2 innenseitig ein nach aussen abgebogener Klemmkragen 19 angeformt. Durch den Klemmkragen 19 ist ein nach innen abgebogener ringförmiger Rand 28 des Zwischenstücks 25 an einer konischen Kontaktfläche 30 des Flansches 17 fixiert. Das Zwischenstück 25 ist somit fest mit dem Innenleiter 14 verbunden und an diesem sicher abgestützt.An inner conductor 14 is fixed in a cylindrical through opening 13 of the housing 7 by means of a dielectric holding part 16. A longitudinal displacement of the inner conductor 14 in part 16 is prevented by a radially projecting collar 15. As can be seen, the inner conductor 14 is designed at one end as a spring bushing and can receive a plug pin, not shown here. On the inside of part 16, the inner conductor 14 has a radially outwardly projecting flange 17 to which a bellows-shaped intermediate piece 25 is fastened. For this purpose, an externally bent clamping collar 19 is integrally formed on the flange 17 according to FIG. 2. The clamping collar 19 fixes an inwardly bent annular edge 28 of the intermediate piece 25 to a conical contact surface 30 of the flange 17. The intermediate piece 25 is thus firmly connected to the inner conductor 14 and securely supported thereon.

Das andere Ende des Zwischenstücks 25 weist einen nach innen gerichteten Rand 27 auf, der eine kreisförmige Oeffnung 29 bildet. Zwischen den beiden Rändern 28 und 27 ist das Zwischenstück 25 durchgehend hohl und rotationssymmetrisch ausgebildet. Mehrere umlaufende Wellenberge 26 wechseln mit Wellentälern 31 ab. Denkbar ist jedoch auch eine Ausführung, bei welcher die Wellenberge 26 und die Wellentäler 31 eine andere Form als gezeigt aufweisen oder spiralförmig angeordnet sind.The other end of the intermediate piece 25 has an inwardly directed edge 27 which forms a circular opening 29. Between the two edges 28 and 27, the intermediate piece 25 is hollow throughout and rotationally symmetrical. Several revolving wave crests 26 alternate with wave troughs 31. However, a version is also conceivable which the wave crests 26 and the wave troughs 31 have a shape other than that shown or are arranged in a spiral.

Das Zwischenstück 25 ist vorzugsweise einstückig und aus einem vergleichsweise dünnwandigen Rohrstück hergestellt. In seiner Längsrichtung ist das Zwischenstück 25 federnd ausgebildet und kann in Längsrichtung durch Stauchung gekürzt werden, beispielsweise von einer Gesamtlänge von 20 mm auf 16 mm. Das Zwischenstück 25 ist auch im verkürzten bzw. gestauchten Zustand in Längsrichtung elastisch federnd, beispielsweise in einem Bereich von 2-3 mm. Geeignete Werkstoffe zur Herstellung des Zwischenstücks 25 sind beispielsweise Kupferberylliumlegierungen oder Stahllegierungen. Denkbar sind jedoch auch andere Werkstoffe, beispielsweise leitende Kunststoffe. Die Figur 1 zeigt das Zwischenstück 25 im gestauchten Zustand. Der ringförmige Rand 27 liegt hierbei unter elastischer Spannung an einer konischen Kontaktfläche 21 eines Kontaktteils 20 an. Dieser Kontaktteil 20 ist in einen Hohlraum 32 des Leiters 5 eingesetzt und liegt mit einer Schulter 33 an der stirnseitigen Schnittfläche 34 des Innenleiters 5 an. Zur Fixierung des Kontaktteils 20 ist zwischen diesem und einem weiteren Teil 22 eine Spreizhülse 23 angeordnet, die mittels einer Schraube 24 unter Spannung gehalten ist. Durch die Teile 33, 22 und 23 wird zugleich der Hohlraum 32 nach aussen abgedichtet.The intermediate piece 25 is preferably in one piece and made from a comparatively thin-walled piece of pipe. In its longitudinal direction, the intermediate piece 25 is resilient and can be shortened in the longitudinal direction by compression, for example from a total length of 20 mm to 16 mm. The intermediate piece 25 is also elastically resilient in the longitudinal direction in the shortened or compressed state, for example in a range of 2-3 mm. Suitable materials for producing the intermediate piece 25 are, for example, copper beryllium alloys or steel alloys. However, other materials are also conceivable, for example conductive plastics. 1 shows the intermediate piece 25 in the compressed state. The annular edge 27 here rests under elastic tension on a conical contact surface 21 of a contact part 20. This contact part 20 is inserted into a cavity 32 of the conductor 5 and rests with a shoulder 33 on the frontal cut surface 34 of the inner conductor 5. To fix the contact part 20, an expansion sleeve 23 is arranged between this and a further part 22, which is held under tension by means of a screw 24. The parts 33, 22 and 23 simultaneously seal the cavity 32 from the outside.

Sollte sich der Abstand zwischen der Kontaktfläche 21 und dem Flansch 17 beispielsweise infolge thermischer Längenänderungen oder mechanischer Einwirkungen ändern, so wird das Zwischenstück 25 entweder gegen seine rückwirkende Federkraft verkürzt oder dieses verlängert sich infolge seiner Federwirkung. Die Längenänderungen am Zwischenstück 25 sind in der Regel jedoch sehr klein, insbesondere kleiner als 1 mm. Ebenfalls werden Exzentrizitäten durch die entsprechende Federwirkung des Zwischenstücks 25 ausgeglichen. Die Verkürzung des Zwischenstücks 25 erfolgt von selbst beim Aufsetzen des Gehäuses 7 auf das Koaxialkabel 1. Wesentlich ist, dass bei Längenänderungen am Zwischenstück 25 sich die Abstände zwischen den Wellenbergen 26, jedoch nicht die Kontaktstellen ändern.If the distance between the contact surface 21 and the flange 17 changes, for example as a result of thermal changes in length or mechanical effects, the intermediate piece becomes 25 either shortened against its retroactive spring force or this lengthens due to its spring action. However, the changes in length on the intermediate piece 25 are generally very small, in particular less than 1 mm. Eccentricities are also compensated for by the corresponding spring action of the intermediate piece 25. The shortening of the intermediate piece 25 takes place automatically when the housing 7 is placed on the coaxial cable 1. It is essential that when the length of the intermediate piece 25 changes, the distances between the wave crests 26, but not the contact points, change.

Beim gezeigten Ausführungsbeispiel verbindet das Zwischenstück 25 zwei Innenleiter. Denkbar ist jedoch auch eine Ausführung, bei der das Zwischenstück 25 zwei Aussenleiter miteinander verbindet.In the embodiment shown, the intermediate piece 25 connects two inner conductors. However, an embodiment is also conceivable in which the intermediate piece 25 connects two outer conductors to one another.

Die in den Figuren 3 und 4 gezeigte Ausführung unterscheidet sich von den oben erwähnten durch den Zapfen 40, der in den Innenleiter 5 lösbar eingesetzt ist und an dem das balgartige Zwischenstück 25 stirnseitig unter federnder Spannung anliegt. Der Zapfen 40 besitzt ein hohlzylindrisches Dichtungsteil 44 aus beispielsweise Silikongummi, das unter axialem Druck zwischen einer aussenseitig gerändelten Spreizhülse 45 und einem Verbindungsteil 46 angeordnet ist. Am Teil 46 ist ein Gewindestift 47 angebracht, mit dem ein Spreizkonus 48 in der radial gegen den Innenleiter 5 gespreizten Spreizhülse 45 gehalten ist. Der axiale Halt und die Dichtheit des Zapfens 40 ist auch bei einem glatten Innenleiter 5 gewährleistet.The embodiment shown in FIGS. 3 and 4 differs from the one mentioned above by the pin 40, which is detachably inserted into the inner conductor 5 and against which the bellows-like intermediate piece 25 rests under resilient tension on the end face. The pin 40 has a hollow cylindrical sealing part 44 made of, for example, silicone rubber, which is arranged under axial pressure between an expanding sleeve 45 knurled on the outside and a connecting part 46. A threaded pin 47 is attached to part 46, with which a spreading cone 48 is held in the spreading sleeve 45, which is spread radially against the inner conductor 5. The axial hold and the tightness of the pin 40 is ensured even with a smooth inner conductor 5.

An einem aus dem Innenleiter herausragenden Ende des Zapfens 40 ist mit einer Anzugsschraube 43, die in eine axiale Gewindebohrung 49 des Verbindungsteil 46 eingreift, ein kronförmiges Kontaktteil 41 beweglich gelagert. Das Kontaktteil 41 greift mit einem gabelförmigen Ansatz 50 mit zeitlichem Spiel in einen Schlitz 51 des Verbindungsteils 46 ein und nimmt in einer axialen Durchgangsbohrung 52 ebenfalls mit radialem Spiel den Schaft 53 der Auszugsschraube 43 auf. Über die Krone 41 kann sowohl das Dichtelement 44 als auch die Spreizhülse 45 radial mit der Innenleiterbohrung verspannt werden.A crown-shaped contact part 41 is movably mounted on an end of the pin 40 protruding from the inner conductor with a tightening screw 43 which engages in an axial threaded bore 49 of the connecting part 46. The contact part 41 engages with a fork-shaped projection 50 with time play in a slot 51 of the connecting part 46 and also receives the shaft 53 of the pull-out screw 43 in an axial through bore 52 with radial play. Both the sealing element 44 and the expansion sleeve 45 can be clamped radially with the inner conductor bore via the crown 41.

Beim Anziehen der Schraube 43 legt sich eine kugelförmige Fläche 54 dieser Schraube 43 an das Kontaktteil 41 an und presst radial sowie stirnseitig vorstehende Zacken 42 gegen die Schnittfläche des Innenleiters 5. Wesentlich ist nun, dass sich hierbei das Kontaktteil 41 gelenkig bewegen und an die Neigung der Schnittfläche genau anpassen kann. Auch bei unsauberen Schnittflächen werden zu Durchschlägen neigende Spalten vermieden und ist eine hohe Kontaktkraft an vorzugsweise drei punktförmigen Kontaktstellen erreicht. Das balgartige Zwischenstück 25 greift unter federnder Spannung an konischen Kontaktflächen 55 zwischen die Zacken 42 ein und passt sich infolge seiner allseitigen Beweglichkeit an die Neigung des Kontakteils 41 an.When the screw 43 is tightened, a spherical surface 54 of this screw 43 bears against the contact part 41 and presses the prongs 42 projecting radially and at the end against the cut surface of the inner conductor 5. It is now essential that the contact part 41 move in an articulated manner and against the inclination can precisely adjust the cut surface. Even with unclean cut surfaces, gaps that tend to breakdown are avoided and a high contact force is achieved at preferably three point-shaped contact points. The bellows-like intermediate piece 25 engages under elastic tension on conical contact surfaces 55 between the teeth 42 and adapts to the inclination of the contact part 41 due to its mobility on all sides.

Claims (13)

Vorrichtung zum elektrischen Verbinden eines insbesondere hohlen Leiters (5) eines Koaxialkabels (1) mit einem Leiter (14) eines Koaxialverbinders, gekennzeichnet durch ein balgartiges Zwischenstück (25), das federnd mit dem Leiter (5) des Koaxialkabels (1) bzw. mit dem Leiter (14) des Koaxialverbinders (6) verbunden ist.Device for the electrical connection of a particularly hollow conductor (5) of a coaxial cable (1) to a conductor (14) of a coaxial connector, characterized by a bellows-type intermediate piece (25) which resiliently connects to the conductor (5) of the coaxial cable (1) or the conductor (14) of the coaxial connector (6) is connected. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das balgartige Zwischenstück (25) in seiner Längsrichtung durch Stauchung verkürzbar ist und dass es an seinen Enden stirnseitig mit dem Leiter (5) des Koaxialkabels (1) bzw. mit dem Leiter (14) verbunden ist.Apparatus according to claim 1, characterized in that the bellows-like intermediate piece (25) can be shortened in its longitudinal direction by compression and that it is connected at its ends to the conductor (5) of the coaxial cable (1) or to the conductor (14) . Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das balgartige Zwischenstück (25) in seiner Längsrichtung im gestauchten Zustand federnd ist.Apparatus according to claim 1 or 2, characterized in that the bellows-like intermediate piece (25) is resilient in its longitudinal direction in the compressed state. Vorrichtung nach einem der Ansprüche 1-3, dadurch gekennzeichnet, dass das Zwischenstück (25) an wenigstens einem Ende einen nach innen ragenden Rand (26, 28) aufweist.Device according to one of claims 1-3, characterized in that the intermediate piece (25) has an inwardly projecting edge (26, 28) at at least one end. Vorrichtung nach einem der Ansprüche 1-4, dadurch gekennzeichnet, dass das Zwischenstück (25) einstückig aus einem vergleichsweise dünnwandigen Rohrstück hergestellt ist.Device according to one of claims 1-4, characterized in that the intermediate piece (25) is made in one piece from a comparatively thin-walled tube piece. Vorrichtung nach einem der Ansprüche 1-5, dadurch gekennzeichnet, dass in den Hohlraum (32) des Innenleiters (5) des Koaxialkabels (1) ein Kontaktteil (20) eingesetzt ist, an dem das Zwischenstück (25) elektrisch leitend anliegt und dieses abdichtet.Device according to one of claims 1-5, characterized in that in the cavity (32) of the inner conductor (5) of the coaxial cable (1) a contact part (20) is inserted, on which the intermediate piece (25) is electrically conductive and seals it . Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass der Kontaktteil (20) beispielsweise mittels eines Spreizteils (23) fest mit dem Innenleiter (5) verbunden ist.Apparatus according to claim 6, characterized in that the contact part (20) is fixedly connected to the inner conductor (5), for example by means of an expansion part (23). Vorrichtung nach einem der Ansprüche 1-7, dadurch gekennzeichnet, dass der Innenleiter (14) des Verbinders (6) fest mit dem Zwischenstück (25) verbunden ist.Device according to one of claims 1-7, characterized in that the inner conductor (14) of the connector (6) is fixedly connected to the intermediate piece (25). Koaxialverbinder mit einem an diesem angeschlossenen Koaxialkabel (1), welches einen beispielsweise hohlen Innenleiter (5) aufweist, der elektrisch leitend mit einer Steckerbuchse (14) oder einem Steckerstift des Koaxialverbinders (6) verbunden ist, gekennzeichnet durch ein in seiner Längsrichtung gestauchtes und balgartiges Zwischenstück (25), das an seinem einen Ende stirnseitig und federnd am Innenleiter (5) des Koaxialkabels (1) anliegt.Coaxial connector with a coaxial cable (1) connected to it, which has, for example, a hollow inner conductor (5) which is electrically conductively connected to a plug socket (14) or a plug pin of the coaxial connector (6), characterized by a bellows-like type that is compressed in its longitudinal direction Intermediate piece (25), that rests at one end at the end and resiliently against the inner conductor (5) of the coaxial cable (1). Koaxialverbinder nach Anspruch 9, dadurch gekennzeichnet, dass das Zwischenstück (25) an einer konischen Kontaktfläche (21) eines Kontaktteils (20) des Innenleiters (5) federelastisch anliegt.Coaxial connector according to claim 9, characterized in that the intermediate piece (25) rests resiliently on a conical contact surface (21) of a contact part (20) of the inner conductor (5). Koaxialverbinder nach Anspruch 9 oder 10, wobei der Innenleiter (5) hohl ist, dadurch gekennzeichnet, dass in den Innenleiter (5) ein Zapfen eingesetzt ist, der an einem aus dem Innenleiter (5) herausragenden Ende ein bewegliches Kontaktteil (41) angeordnet ist.Coaxial connector according to claim 9 or 10, wherein the inner conductor (5) is hollow, characterized in that a pin is inserted into the inner conductor (5) and a movable contact part (41) is arranged on an end protruding from the inner conductor (5) . Koaxialverbinder nach Anspruch 11, dadurch gekennzeichnet, dass das Kontaktteil (41) mehrere, vorzugsweise drei radial und stirnseitig vorstehende Zacken (42) aufweist, die an den Innenleiter (5) und an das balgartige Zwischenstück (25) angelegt sind.Coaxial connector according to claim 11, characterized in that the contact part (41) has a plurality, preferably three, radially and at the end projecting teeth (42) which are applied to the inner conductor (5) and to the bellows-like intermediate piece (25). Koaxialverbinder anch Anspruch 11 oder 12, dadurch gekennzeichnet, dass der Zapfen (40) eine Anzugsschraube (43) aufweist, mit welcher das Kontakteil (41) gegen den Innenleiter (5) gespannt ist und diese Anzugsschraube (43) eine kugelförmige Kontaktfläche (44) aufweist, welche am Kontaktteil anliegt.Coaxial connector according to claim 11 or 12, characterized in that the pin (40) has a tightening screw (43) with which the contact part (41) is clamped against the inner conductor (5) and this tightening screw (43) has a spherical contact surface (44) has, which rests on the contact part.
EP95810793A 1995-05-02 1995-12-13 Device for electrical connection Ceased EP0741436A1 (en)

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CH124895 1995-05-02
CH1248/95 1995-05-02

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0869586A1 (en) * 1997-04-03 1998-10-07 Huber & Suhner Ag Electrical connector for coaxial cable
EP0938165A1 (en) * 1998-02-19 1999-08-25 Alcatel Coaxial high frequency cable connector
US6102737A (en) * 1998-02-19 2000-08-15 Alcatel Connecting element for a coaxial high-frequency cable
WO2009000385A3 (en) * 2007-06-25 2009-02-26 Rosenberger Hochfrequenztech Coaxial connector
JP2010531526A (en) * 2007-06-25 2010-09-24 ローゼンベルガー ホーフフレクベンツテクニーク ゲーエムベーハー ウント ツェーオー カーゲー Coaxial connector
JP2010531527A (en) * 2007-06-25 2010-09-24 ローゼンベルガー ホーフフレクベンツテクニーク ゲーエムベーハー ウント ツェーオー カーゲー Coaxial connector
US8231398B2 (en) 2007-06-25 2012-07-31 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Co-axial connector

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US5722856A (en) 1998-03-03
CN1139302A (en) 1997-01-01
CA2171139A1 (en) 1996-11-03

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