EP2263288B1 - Coaxial plug connector element with thermal decoupling - Google Patents

Coaxial plug connector element with thermal decoupling Download PDF

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Publication number
EP2263288B1
EP2263288B1 EP09732950A EP09732950A EP2263288B1 EP 2263288 B1 EP2263288 B1 EP 2263288B1 EP 09732950 A EP09732950 A EP 09732950A EP 09732950 A EP09732950 A EP 09732950A EP 2263288 B1 EP2263288 B1 EP 2263288B1
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EP
European Patent Office
Prior art keywords
plug
connector part
type connector
outer conductor
union nut
Prior art date
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Active
Application number
EP09732950A
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German (de)
French (fr)
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EP2263288A1 (en
Inventor
Markus Leipold
Werner Perndl
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Rohde and Schwarz GmbH and Co KG
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Rohde and Schwarz GmbH and Co KG
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Publication of EP2263288A1 publication Critical patent/EP2263288A1/en
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Publication of EP2263288B1 publication Critical patent/EP2263288B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
    • H01R4/625—Soldered or welded connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • 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
    • H01R13/622—Screw-ring or screw-casing
    • 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
    • H01R24/52—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 in or to a panel or structure
    • 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 part according to the preamble of the main claim P.
  • the currently coaxial connectors as they are under the designations N-, 2.92 mm, SMA, 1 mm, 1.85 mm, 3.5 mm or 2.4 mm plug or as so-called hermaphroditic under the name PC7 are known loud Fig. 1 from a plug part 1 and a socket part 2.
  • the plug 1 consists of an outer conductor 3, in which via a support plate 4, the inner conductor 5 is arranged coaxially.
  • the coaxial line consists of inner conductor 5 and outer conductor 3 and opens on the back of the plug 1 in a device not shown in detail 15 and is connected there with electronic components, also not shown.
  • a union nut 6 is rotatably mounted, which is usually connected via a snap ring 7 axially frictionally connected to the outer conductor 3.
  • the internal thread 8 of this union nut 6 must be screwed onto the external thread 9 of the socket 2 for producing the coaxial connection until the annular end contact surface 10 of the outer conductor 3 of the plug 1 contacts the corresponding annular end contact surface 11 of the socket 2.
  • the tip 12 of the inner conductor 5 is thereby inserted into the radially spring-loaded, sleeve-shaped bushing 13 of the female part 2.
  • thermal power cell When using such coaxial connectors to devices 15 with extremely temperature-sensitive electronic components, as for example in a measuring head for thermal power measurement of High-frequency signals with a built-in measuring head thermal power cell is the case, it must be ensured that as little disturbing heat from the outside passes through the connector part 1 and the outer conductor 3 of the coaxial line into the device interior. Alone the heat that is supplied to the plug part 1 by touching the user's hand with the nut 6, and the heat supplied via the end contact surface 10 of the outer conductor 3 must be kept away from the thermally sensitive electronic components of the device 15.
  • EP-A-327204 discloses a connector part according to the preamble of claim 1.
  • the principle of the invention has proven in such known connector parts, in which the friction torque of the axial frictional connection between the union nut on outer conductor is smaller than the friction torque between the outer conductor end contact surfaces of the connector is selected and in that the axial adhesion between the union nut and outer conductor via at least one roller bearing, for example, a ball, roller or needle bearing takes place.
  • at least one roller bearing for example, a ball, roller or needle bearing takes place.
  • FIGS. 2 and 3 show the structure of a coaxial connector part, in which two needle bearings 24, 25 are provided to reduce the friction coefficient between the union nut 6 and a screwed onto the outer conductor 3 of the coaxial bearing bushing 20.
  • the bushing 20 is preferably like the nut 6 made of stainless steel.
  • the bushing 20 has a continuous inner bore, in which the end of the coaxial line system to be plugged and screwed, for example via an outer conductor 3 of the coaxial line system formed external thread 21 in an internal thread 22 of this through bore of the bearing bush.
  • a bearing cap 23 is screwed in the open end of the cup-shaped union nut 6, a bearing cap 23 is screwed.
  • the roller bearings provided for reducing the frictional torque of the axial frictional connection between the union nut 6 and the bearing bush 20 are designed as needle bearings 24 and 25. They are placed on both sides of the formed on the bearing bush 20 annular flange 26 on corresponding cylindrical portions of the bearing bush 20. Between the needle bearings 24 and 25 and the end faces of the annular flange 26, on which the needle roller bearings roll, may optionally be arranged additional pulleys, as with the running disk 27 in Fig. 2 is indicated.
  • a plate spring 28 is arranged between the bottom of the nut 6 and the first subsequent thrust bearing 24 preferably still a plate spring 28 is arranged.
  • a closed assembly that can be prefabricated independently and only immediately during use or assembly to the end of the coaxial line system. 3 , 5 is screwed.
  • This closed assembly can be placed on the outer conductor 3 of the coaxial line system from the front, thereby also the assembly is greatly facilitated. Even in case of service, the assembly can be easily disassembled from the coaxial line system and optionally replaced by a new assembly.
  • a ring 30 is placed on the metal bearing bush made of plastic, through which the bearing bush 20 of which in the union nut. 6 screwed bearing cap 23 is thermally decoupled from metal.
  • a ring 31 made of plastic in a corresponding groove is still used on the outer circumference of the annular flange 26 of the bearing bush made of metal, so that this flange 26 is thermally decoupled from the outer wall surrounding the inner nut 6.
  • a metallic connection exists only at the contact points of the rolling elements.
  • Fig. 4 shows further possibilities of thermal decoupling between the individual parts of such in Fig. 2 shown coaxial connector.
  • the structure with the two needle bearings corresponds to that according to FIGS. 2 and 3 in addition to the plastic sleeve 30, two plastic rings 32 and 33 are provided, which lie flat on the end faces of the annular flange 26 of the bearing bush and thermally insulate them.
  • On the disc 32 an axially projecting annular flange is also provided above, the insulating ring 31 after Fig. 2 corresponds and the outer annular edge of the flange 26 isolated.
  • an additional annular disc 34 is provided as a running surface for the bearing 24, which may also be omitted in forming the plastic ring 33 of a high-strength plastic. The same applies to the bearing plate 27th
  • Fig. 5 shows an embodiment of a coaxial connector part with only a single needle bearing 25.
  • a plastic ring 30 is provided for thermal insulation between the bearing cap 23 and bushing 20 again.
  • a disc 35 made of plastic arranged with an axially projecting edge which engages over the outer edge of the annular flange 26 again.
  • a corresponding disk 36 of insulating material is arranged on the bearing bush 20, which covers the other half of the annular flange 26 via a ring edge.
  • both the union nut 6 and the bearing bush 20 screwed onto the outer conductor 3 consist of a high-strength metal, for example of stainless steel.
  • the thermal decoupling between the union nut and bearing bush can also be achieved according to an embodiment of the invention that either the nut 6 and / or the bearing bush 20 made of high-strength plastic, for example, a glass fiber reinforced plastic material, from which also preferably in the embodiments according to Fig. 2-5 used plastic parts are made.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The invention relates to a coaxial plug connector element comprising a metal union nut that is arranged in a rotatable manner on a metal outer conductor and can be screwed onto the external thread of the counter plug connector element. Means for the thermal decoupling of the plug connector element are provided on the inside of the device.

Description

Die Erfindung betrifft ein koaxiales Steckverbindungsteil laut Oberbegriff des Hauptanspruches P.The invention relates to a coaxial connector part according to the preamble of the main claim P.

Die derzeit koaxialen Steckverbindungen, wie sie unter den Bezeichnungen N-,2,92 mm-, SMA-, 1 mm-, 1,85 mm-, 3,5 mm - oder 2,4 mm- Stecker bzw. als sogenannte Zwitterstecker unter der Bezeichnung PC7 bekannt sind, bestehen laut Fig. 1 aus einem Steckerteil 1 und einem Buchsenteil 2. Der Stecker 1 besteht aus einem Außenleiter 3, in welchem über eine Stützscheibe 4 der Innenleiter 5 koaxial angeordnet ist. Die Koaxialleitung besteht aus Innenleiter 5 und Außenleiter 3 und mündet auf der Rückseite des Steckers 1 in einem nicht näher dargestellten Gerät 15 und ist dort mit ebenfalls nicht dargestellten elektronischen Bauelementen verbunden. Auf dem Außenleiter 3 ist eine Überwurfmutter 6 drehbar aufgesetzt, die meist über einen Sprengring 7 axial kraftschlüssig mit dem Außenleiter 3 verbunden ist. Das Innengewinde 8 dieser Überwurfmutter 6 muss zur Herstellung der Koaxialverbindung auf das Außengewinde 9 der Buchse 2 aufgeschraubt werden, bis die ringförmige Stirnkontaktfläche 10 des Außenleiters 3 des Steckers 1 die entsprechende ringförmige Stirnkontaktfläche 11 der Buchse 2 kontaktiert. Die Spitze 12 des Innenleiters 5 wird dabei in die radial gefederte, hülsenförmige Buchse 13 des Buchsenteils 2 eingeschoben.The currently coaxial connectors, as they are under the designations N-, 2.92 mm, SMA, 1 mm, 1.85 mm, 3.5 mm or 2.4 mm plug or as so-called hermaphroditic under the name PC7 are known loud Fig. 1 from a plug part 1 and a socket part 2. The plug 1 consists of an outer conductor 3, in which via a support plate 4, the inner conductor 5 is arranged coaxially. The coaxial line consists of inner conductor 5 and outer conductor 3 and opens on the back of the plug 1 in a device not shown in detail 15 and is connected there with electronic components, also not shown. On the outer conductor 3, a union nut 6 is rotatably mounted, which is usually connected via a snap ring 7 axially frictionally connected to the outer conductor 3. The internal thread 8 of this union nut 6 must be screwed onto the external thread 9 of the socket 2 for producing the coaxial connection until the annular end contact surface 10 of the outer conductor 3 of the plug 1 contacts the corresponding annular end contact surface 11 of the socket 2. The tip 12 of the inner conductor 5 is thereby inserted into the radially spring-loaded, sleeve-shaped bushing 13 of the female part 2.

Bei Anwendung solcher koaxialer Steckverbindungen an Geräten 15 mit extrem temperaturempfindlichen elektronischen Bauteilen, wie dies beispielsweise bei einem Messkopf zur thermischen Leistungsmessung von Hochfrequenzsignalen mit einer im Messkopf eingebauten thermischen Leistungsmesszelle der Fall ist, muss dafür gesorgt werden, dass möglichst wenig störende Wärme von außen über das Steckerteil 1 und den Außenleiter 3 der Koaxialleitung ins Geräteinnere gelangt. Allein schon die Wärme, die durch Berührung der Hand des Benutzers mit der Überwurfmutter 6 dem Steckerteil 1 zugeführt wird, sowie die zugeführte Wärme über die Stirnkontaktfläche 10 des Außenleiters 3 muss von den thermisch empfindlichen elektronischen Bauteilen des Gerätes 15 fern gehalten werden.When using such coaxial connectors to devices 15 with extremely temperature-sensitive electronic components, as for example in a measuring head for thermal power measurement of High-frequency signals with a built-in measuring head thermal power cell is the case, it must be ensured that as little disturbing heat from the outside passes through the connector part 1 and the outer conductor 3 of the coaxial line into the device interior. Alone the heat that is supplied to the plug part 1 by touching the user's hand with the nut 6, and the heat supplied via the end contact surface 10 of the outer conductor 3 must be kept away from the thermally sensitive electronic components of the device 15.

Es ist daher Aufgabe der Erfindung, bei einer koaxialen Steckverbindung der beschriebenen Art die Übertragung von Wärme vom Stecker zum Gerät so gering wie möglich zu machen.It is therefore an object of the invention to make the transmission of heat from the plug to the device as low as possible in a coaxial connector of the type described.

Diese Aufgabe wird für ein koaxiales Steckverbindungsteil durch die Merkmale des Anspruchs 1 oder Anspruch 9 gelöst. Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.This object is achieved for a coaxial connector part by the features of claim 1 or claim 9. Advantageous developments emerge from the subclaims.

Dokument EP-A-327204 offenbart ein Steckverbindungsteil gemäß dem Oberbegriff des Anspruchs 1.document EP-A-327204 discloses a connector part according to the preamble of claim 1.

Durch die erfindungsgemäße thermische Entkopplung zwischen den sich gegenüberliegenden Flächen von Überwurfmutter und Außenleiter der Koaxialleitung wird vermieden, dass störende Wärme von außen über die Überwurfmutter des Steckerteils zu den thermisch empfindlichen Bauteilen im Inneren des mit dem Steckerteil verbundenen Gerätes übertragen wird. Bei handelsüblichen koaxialen Steckverbindungen gemäß Fig. 1, bei denen der axiale Kraftschluss zwischen Überwurfmutter und Außenleiter über einen Sprengring erfolgt, kann dies beispielsweise einfach dadurch erreicht werden, dass dieser Sprengring oder die sich gegenüberliegenden Flächen von Überwurfmutter und Außenleiter aus einem schlecht wärmeleitenden Kunststoff bestehen.The inventive thermal decoupling between the opposite surfaces of the union nut and outer conductor of the coaxial is avoided that disturbing heat is transmitted from the outside via the union nut of the male part to the thermally sensitive components inside the device connected to the plug part. In commercial coaxial connectors according to Fig. 1 , in which the axial adhesion between the union nut and outer conductor via a snap ring, this can be achieved, for example, simply by the fact that this snap ring or the opposing surfaces consist of union nut and outer conductor of a poorly heat-conducting plastic.

Als besonders vorteilhaft hat sich das erfindungsgemäße Prinzip bei solchen bekannten Steckverbindungsteilen erwiesen, bei denen das Reibungsdrehmoment des axialen Kraftschlusses zwischen Überwurfmutter auf Außenleiter kleiner als das Reibungsdrehmoment zwischen den Außenleiter- Stirnkontaktflächen der Steckverbindung gewählt ist und zwar dadurch, dass der axiale Kraftschluss zwischen Überwurfmutter und Außenleiter über mindestens ein Wälzlager, beispielsweise ein Kugel-, Rollen- oder Nadellager erfolgt. Hierzu sei auf die EP 0 327 204 B1 verwiesen. Vorteilhafte Ausgestaltungen der thermischen Entkopplung für solche speziellen koaxialen Steckverbindungsteile mit zusätzlichen Wälzlagern ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung.Particularly advantageous, the principle of the invention has proven in such known connector parts, in which the friction torque of the axial frictional connection between the union nut on outer conductor is smaller than the friction torque between the outer conductor end contact surfaces of the connector is selected and in that the axial adhesion between the union nut and outer conductor via at least one roller bearing, for example, a ball, roller or needle bearing takes place. To this is on the EP 0 327 204 B1 directed. Advantageous embodiments of the thermal decoupling for such special coaxial connector parts with additional bearings arise from the dependent claims and the following description.

Ausführungsbeispiele der Erfindung werden nachfolgend unter Bezugnahme der Zeichnung näher beschrieben. In der Zeichnung zeigen:

Fig. 1
einen Schnitt durch eine bekannte Steckverbindung in stark vergrößertem Maßstab;
Fig. 2
im auseinandergezogenen Zustand die Einzelteile eines koaxialen Steckverbindungsteiles mit eingebauten Wälzlagern;
Fig. 3
dieses in Fig. 2 dargestellte Steckverbindungsteil in zusammengebauten Zustand;
Fig. 4
ein weiteres Beispiel für ein solches Steckverbindungsteil mit eingebauten Wälzlagern;
Fig. 5
ein Steckverbindungsteil mit nur einem Wälzlager und einem zusätzlichen Gleitlager
Embodiments of the invention are described below with reference to the drawings. In the drawing show:
Fig. 1
a section through a known connector in greatly enlarged scale;
Fig. 2
in the extended state, the items of a coaxial connector part with built-in bearings;
Fig. 3
this in Fig. 2 shown connector part in the assembled state;
Fig. 4
another example of such a connector part with built-in bearings;
Fig. 5
a plug connection part with only one rolling bearing and an additional sliding bearing

Fig. 2 und 3 zeigen den Aufbau eines koaxialen Steckverbindungsteils, bei dem zur Reduzierung des Reibungskoeffizienten zwischen Überwurfmutter 6 und einer auf dem Außenleiter 3 der Koaxialleitung aufgeschraubten Lagerbuchse 20 zwei Nadellager 24, 25 vorgesehen sind. FIGS. 2 and 3 show the structure of a coaxial connector part, in which two needle bearings 24, 25 are provided to reduce the friction coefficient between the union nut 6 and a screwed onto the outer conductor 3 of the coaxial bearing bushing 20.

Die Lagerbuchse 20 besteht vorzugsweise wie die Überwurfmutter 6 aus rostfreiem Stahl. Die Lagerbuchse 20 besitzt eine durchgehende Innenbohrung, in welcher das Ende des anzuschließenden Koaxialleitungs-Systems einsteckbar und beispielsweise über ein am Außenleiter 3 des Koaxialleitungs-Systems ausgebildeten Außengewinde 21 in ein Innengewinde 22 dieser durchgehenden Bohrung der Lagerbuchse einschraubbar ist. In das offene Ende der topfförmigen Überwurfmutter 6 ist ein Lagerdeckel 23 einschraubbar. Die zur Reduzierung des Reibungsdrehmoments des axialen Kraftschlusses zwischen Überwurfmutter 6 und Lagerbuchse 20 vorgesehenen Wälzlager sind im Ausführungsbeispiel als Nadellager 24 und 25 ausgebildet. Sie sind zu beiden Seiten des an der Lagerbuchse 20 ausgebildeten Ringflansches 26 auf entsprechenden zylindrischen Abschnitten der Lagerbuchse 20 aufgesetzt. Zwischen den Nadellagern 24 beziehungsweise 25 und den Stirnflächen des Ringflansches 26, auf denen die Nadellager abrollen, können gegebenenfalls zusätzliche Laufscheiben angeordnet sein, wie dies mit der Laufscheibe 27 in Fig. 2 angedeutet ist.The bushing 20 is preferably like the nut 6 made of stainless steel. The bushing 20 has a continuous inner bore, in which the end of the coaxial line system to be plugged and screwed, for example via an outer conductor 3 of the coaxial line system formed external thread 21 in an internal thread 22 of this through bore of the bearing bush. In the open end of the cup-shaped union nut 6, a bearing cap 23 is screwed. In the exemplary embodiment, the roller bearings provided for reducing the frictional torque of the axial frictional connection between the union nut 6 and the bearing bush 20 are designed as needle bearings 24 and 25. They are placed on both sides of the formed on the bearing bush 20 annular flange 26 on corresponding cylindrical portions of the bearing bush 20. Between the needle bearings 24 and 25 and the end faces of the annular flange 26, on which the needle roller bearings roll, may optionally be arranged additional pulleys, as with the running disk 27 in Fig. 2 is indicated.

Damit auch bei gelöster Stecker-Verbindung kein Spiel zwischen den zusammenwirkenden Bauteilen entstehen kann, ist zwischen dem Boden der Überwurfmutter 6 und dem ersten darauf folgenden Axiallager 24 vorzugsweise noch eine Tellerfeder 28 angeordnet. Im zusammengebauten Zustand gemäß Fig. 3 bildet die mit dem Deckel 23 verschlossene Überwurfmutter 6 mit der im Inneren der Überwurfmutter angeordneten Lagerbuchse 20 und den damit zusammenwirkenden Axiallagern 24, 25 eine geschlossene Baugruppe, die eigenständig vorgefertigt werden kann und erst unmittelbar bei Gebrauch oder Montage auf das Ende des Koaxialleitungs-Systems 3, 5 aufgeschraubt wird. Diese geschlossene Baugruppe kann auf dem Außenleiter 3 des Koaxialleitungs-Systems von vorne aufgesetzt werden, auch dadurch wird die Montage sehr erleichtert. Auch im Servicefall kann die Baugruppe sehr leicht vom Koaxialleitungs-System demontiert und gegebenenfalls durch eine neue Baugruppe ersetzt werden.So that no play between the interacting components can arise even with dissolved plug connection, between the bottom of the nut 6 and the first subsequent thrust bearing 24 preferably still a plate spring 28 is arranged. In the assembled state according to Fig. 3 forms the closed with the lid 23 union nut 6 with the arranged inside the nut bearing bushing 20 and the cooperating thrust bearings 24, 25 a closed assembly that can be prefabricated independently and only immediately during use or assembly to the end of the coaxial line system. 3 , 5 is screwed. This closed assembly can be placed on the outer conductor 3 of the coaxial line system from the front, thereby also the assembly is greatly facilitated. Even in case of service, the assembly can be easily disassembled from the coaxial line system and optionally replaced by a new assembly.

Um bei einem solchen Steckverbindungsteil die Wärmeübertragung zwischen Überwurfmutter 6 und der auf dem Außenleiter der Koaxialleitung aufgeschraubten Lagerbuchse 20 so gering wie möglich zu halten, ist auf die metallische Lagerbuchse ein Ring 30 aus Kunststoff aufgesetzt, durch den die Lagerbuchse 20 von dem in die Überwurfmutter 6 eingeschraubten Lagerdeckel 23 aus Metall thermisch entkoppelt wird. Zusätzlich ist noch am Außenumfang des Ringflansches 26 der Lagerbuchse aus Metall ein Ring 31 aus Kunststoff in einer entsprechenden Nut eingesetzt, so dass auch dieser Flansch 26 von der außen umgebenden Innenwand der Überwurfmutter 6 thermisch entkoppelt ist. Eine metallische Verbindung besteht nur noch an den Kontaktstellen der Wälzkörper.In order to keep the heat transfer between the union nut 6 and the screwed on the outer conductor of the coaxial line bushing 20 as low as possible in such a connector part, a ring 30 is placed on the metal bearing bush made of plastic, through which the bearing bush 20 of which in the union nut. 6 screwed bearing cap 23 is thermally decoupled from metal. In addition, a ring 31 made of plastic in a corresponding groove is still used on the outer circumference of the annular flange 26 of the bearing bush made of metal, so that this flange 26 is thermally decoupled from the outer wall surrounding the inner nut 6. A metallic connection exists only at the contact points of the rolling elements.

Fig. 4 zeigt weitere Möglichkeiten der thermischen Entkopplung zwischen den einzelnen Teilen einer solchen in Fig. 2 dargestellten koaxialen Steckverbindung. Der Aufbau mit den beiden Nadellagern entspricht demjenigen gemäß Fig. 2 und 3, zusätzlich zur Kunststoffhülse 30 sind zwei Kunststoffringe 32 und 33 vorgesehen, die flach auf den Stirnseiten des Ringflansches 26 der Lagerbuchse aufliegen und diese thermisch isolieren. An der Scheibe 32 ist oben außerdem ein axial abstehender Ringflansch vorgesehen, der dem Isolierring 31 nach Fig. 2 entspricht und den äußeren Ringrand des Flansches 26 isoliert. Zwischen Lager 24 und Ringflansch 26 ist im Ausführungsbeispiel nach Fig. 4 außerdem noch eine zusätzliche Ringscheibe 34 als Lauffläche für das Lager 24 vorgesehen, die bei Ausbildung des Kunststoffringes 33 aus einem hochfesten Kunststoff auch entfallen kann. Gleiches gilt für die Lagerscheibe 27. Fig. 4 shows further possibilities of thermal decoupling between the individual parts of such in Fig. 2 shown coaxial connector. The structure with the two needle bearings corresponds to that according to FIGS. 2 and 3 in addition to the plastic sleeve 30, two plastic rings 32 and 33 are provided, which lie flat on the end faces of the annular flange 26 of the bearing bush and thermally insulate them. On the disc 32, an axially projecting annular flange is also provided above, the insulating ring 31 after Fig. 2 corresponds and the outer annular edge of the flange 26 isolated. Between bearing 24 and annular flange 26 is in the embodiment according to Fig. 4 In addition, an additional annular disc 34 is provided as a running surface for the bearing 24, which may also be omitted in forming the plastic ring 33 of a high-strength plastic. The same applies to the bearing plate 27th

Fig. 5 zeigt schließlich ein Ausführungsbeispiel eines koaxialen Steckverbindungsteiles mit nur einem einzigen Nadellager 25. Auch hier ist wieder zur thermischen Isolierung zwischen Lagerdeckel 23 und Lagerbuchse 20 ein Kunststoffring 30 vorgesehen. Anstelle des zweiten Nadellagers gemäß Fig. 2 bzw. 4 ist in Fig. 5 zwischen dem Boden der Überwurfmutter 6 und dem Ringflansch 26 der Lagerbuchse 20 eine Scheibe 35 aus Kunststoff angeordnet mit einem axial vorstehenden Rand, der wieder über den äußeren Rand des Ringflansches 26 greift. Von der anderen Seite ist auf die Lagerbuchse 20 eine entsprechende Scheibe 36 aus Isoliermaterial angeordnet, die über einen Ringrand die andere Hälfte des Ringflansches 26 abdeckt. Diese beiden Kunststoffscheiben dienen einerseits zur thermischen Entkopplung zwischen Überwurfmutter 6 und Lagerbuchse 20 und gleichzeitig als Gleitlager zur Reduzierung des Reibungskoeffizienten. Eine gewellte Federscheibe 37 auf dem Lagerdeckel 23 verhindert in diesem Ausführungsbeispiel ein Spiel zwischen den Bauteilen. Fig. 5 Finally, shows an embodiment of a coaxial connector part with only a single needle bearing 25. Again, a plastic ring 30 is provided for thermal insulation between the bearing cap 23 and bushing 20 again. Instead of the second needle bearing according to Fig. 2 or 4 is in Fig. 5 between the bottom of the cap nut 6 and the annular flange 26 of the bearing bush 20, a disc 35 made of plastic arranged with an axially projecting edge which engages over the outer edge of the annular flange 26 again. From the other side, a corresponding disk 36 of insulating material is arranged on the bearing bush 20, which covers the other half of the annular flange 26 via a ring edge. These two plastic discs are used on the one hand for thermal decoupling between the union nut 6 and bearing bush 20 and at the same time as a plain bearing for Reduction of the friction coefficient. A corrugated spring washer 37 on the bearing cap 23 prevents in this embodiment, a game between the components.

In den vorausgehenden Ausführungsbeispielen bestehen sowohl die Überwurfmutter 6 als auch die auf dem Außenleiter 3 aufgeschraubte Lagerbuchse 20 aus einem hochfesten Metall, beispielsweise aus rostfreiem Stahl. Die thermische Entkopplung zwischen Überwurfmutter und Lagerbuchse kann gemäß einer Weiterbildung der Erfindung auch dadurch erreicht werden, dass entweder die Überwurfmutter 6 und/oder die Lagerbuchse 20 aus hochfestem Kunststoff bestehen, beispielsweise aus einem glasfaserverstärkten Kunststoffmaterial, aus welchen auch vorzugsweise die in den Ausführungsbeispielen nach Fig. 2 - 5 verwendeten Kunststoffteile gefertigt sind.In the preceding embodiments, both the union nut 6 and the bearing bush 20 screwed onto the outer conductor 3 consist of a high-strength metal, for example of stainless steel. The thermal decoupling between the union nut and bearing bush can also be achieved according to an embodiment of the invention that either the nut 6 and / or the bearing bush 20 made of high-strength plastic, for example, a glass fiber reinforced plastic material, from which also preferably in the embodiments according to Fig. 2-5 used plastic parts are made.

Mit den geschilderten Maßnahmen wird zwar eine thermische Entkopplung zwischen der Überwurfmutter 6 und dem Außenleiter 3 der Koaxialleitung erreicht, eine direkte Übertragung von Wärme, die zur Buchse 2 gelangt, über die Stirnkontaktfläche 11 des Außenleiters zur Stirnkontaktfläche 10 und damit auch zum Außenleiter 3 des Steckers 1 kann damit aber nicht verhindert werden. Um eine solche derartige unmittelbare Wärmeübertragung auf den Außenleiter 3 der zum Gerät 15 führenden Koaxialleitung gering zu halten, wird der Teil des Außenleiters 3, der unmittelbar in die Lagerbuchse 20 eingeschraubt ist, aus einem schlecht wärmeleitenden Material, beispielsweise nicht rostendem Stahl, (Niro 1.4305) hergestellt. Die Temperaturgradienten im inneren des Geräts 15 können weiter reduziert werden, indem der Teil des Außenleiters 3, in dem die thermisch empfindlichen Bauteile des Gerätes 15 eingesetzt sind, aus gut wärmeleitenden Material wie Kupfer (z.B. E-Cu 57F30) ausgeführt ist.Although a thermal decoupling between the nut 6 and the outer conductor 3 of the coaxial line is achieved with the described measures, a direct transfer of heat, which reaches the socket 2, via the end contact surface 11 of the outer conductor to the end contact surface 10 and thus to the outer conductor 3 of the plug 1 can not be prevented. In order to keep such a direct heat transfer to the outer conductor 3 of the device 15 leading to the coaxial low, the part of the outer conductor 3, which is screwed directly into the bearing bush 20, from a poorly heat-conductive material, such as stainless steel, (Niro 1.4305 ) produced. The temperature gradients in the interior of the device 15 can be further reduced by the part of the outer conductor 3, in which the thermal sensitive components of the device 15 are used, made of good heat conducting material such as copper (eg E-Cu 57F30) is executed.

Diese beiden Außenleiterteile werden vorzugsweise durch ein Reibschweißverfahren miteinander homogen verbunden. Durch den vorderen schlecht wärmeleitenden Außenleiter wird so auch unmittelbar in den Außenleiter übertragene Wärme von den thermisch empfindlichen Teilen des Gerätes 15 fern gehalten bzw. reduziert. Die thermische Isolation, durch die Kombination von gut- und schlecht thermisch leitfähigen Materials im Außenleiter 3, kann auch unabhängig von der thermischen Entkopplung des Überwurfs zum Einsatz kommen.These two outer conductor parts are preferably connected to one another homogeneously by a friction welding process. By the front poorly heat-conducting outer conductor so transferred directly into the outer conductor heat is kept away from the thermally sensitive parts of the device 15 or reduced. The thermal insulation, by the combination of good and poor thermal conductive material in the outer conductor 3, can also be used independently of the thermal decoupling of the throw.

Die Erfindung ist nicht auf die dargestellten Ausführungsbeispiele beschränkt.The invention is not limited to the illustrated embodiments.

Claims (10)

  1. Coaxial plug-type connector part having a union nut (6) made of metal which is arranged rotatably on an outer conductor (3) made of metal and can be screwed onto an external thread (9) on a mating plug-type connector part (2),
    characterised in that
    there are arranged, between the opposing faces of the union nut (6) and outer conductor (3, 20), means (30, 31, 32, 33, 35, 36) for thermally decoupling them.
  2. Plug-type connector part according to claim 1,
    characterised in that
    the means used for the thermal decoupling are additional components (30, 31, 32, 33, 35, 36) arranged between the union nut (6) and outer conductor (3) and made of material, in particular plastic, which is a poor heat-conductor.
  3. Plug-type connector part according to claim 1 or 2, in which there is provided, for reducing the frictional torque between the union nut (6) and the outer conductor (3), at least one rolling bearing (24, 25) which is arranged on a bearing bush (20) which can be placed, via an internal bore, on the outer conductor (3) of the coaxial line to be connected,
    characterised in that
    the means for thermal decoupling between the union nut (6) and the outer conductor (3) contain additional components made of plastic arranged between the opposing faces of the union nut (6) and the bearing bush (20).
  4. Plug-type connector part according to claim 3,
    characterised in that
    a plastic ring (30) is placed on that section of the metal bearing bush (20) which receives the rolling bearing (25).
  5. Plug-type connector part according to claim 3 or 4,
    characterised in that
    a ring (31) made of plastic is placed, on the outer periphery, on that flange (26) of the bearing bush (20) which interacts with the rolling bearings (24, 25).
  6. Plug-type connector part according to claim 3, 4 or 5,
    characterised in that
    washers (32, 33) made of plastic are additionally arranged between the rolling bearings (24, 25) and the annular flange (26) of the bearing bush (20).
  7. Plug-type connector part according to one of the preceding claims,
    characterised in that
    only one rolling bearing (25) is arranged on the bearing bush (20), and plastic washers (35, 36) for thermal decoupling having a concurrent sliding bearing property are provided on either side of the annular flange (26) of the bearing bush (20).
  8. Plug-type connector part according to one of the preceding claims,
    characterised in that
    the union nut (6) and/or bearing bush (20) consist of a high-strength plastic material.
  9. Plug-type connector part having a union nut (6) made of metal which is arranged rotatably on an outer conductor (3) made of metal belonging to a coaxial line (3, 5) and can be screwed onto an external thread (9) on a mating plug-type connector part (2), particularly according to one or more of the preceding claims,
    characterised in that the outer conductor (3) consists, in the longitudinal direction in the region of the plugging-in side of the plug-type connector part, of a material, in particular stainless steel, which is a poor heat-conductor, and, in the adjoining section which leads to the thermally sensitive parts, of a material which is a good heat-conductor.
  10. Plug-type connector part according to claim 9,
    characterised in that the two materials are connected to one another in a homogeneous manner by friction welding.
EP09732950A 2008-04-15 2009-03-11 Coaxial plug connector element with thermal decoupling Active EP2263288B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008018810 2008-04-15
DE102008022100A DE102008022100A1 (en) 2008-04-15 2008-05-05 Coaxial connector with thermal decoupling
PCT/EP2009/001735 WO2009127302A1 (en) 2008-04-15 2009-03-11 Coaxial plug connector element with thermal decoupling

Publications (2)

Publication Number Publication Date
EP2263288A1 EP2263288A1 (en) 2010-12-22
EP2263288B1 true EP2263288B1 (en) 2011-09-07

Family

ID=41078763

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Application Number Title Priority Date Filing Date
EP09732950A Active EP2263288B1 (en) 2008-04-15 2009-03-11 Coaxial plug connector element with thermal decoupling

Country Status (6)

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US (1) US8333611B2 (en)
EP (1) EP2263288B1 (en)
JP (1) JP5200160B2 (en)
AT (1) ATE523928T1 (en)
DE (1) DE102008022100A1 (en)
WO (1) WO2009127302A1 (en)

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US8388374B2 (en) * 2011-04-12 2013-03-05 Amphenol Corporation Coupling system for electrical connector assembly
DE102017128089B4 (en) * 2017-11-28 2019-08-14 Phoenix Contact Gmbh & Co. Kg Shielded circular connector
EP3617534B1 (en) * 2018-08-30 2022-12-21 Rohde & Schwarz GmbH & Co. KG Measurement equipment, hf coaxial connection element and torque limiter for an hf coaxial connection element
CN114223098B (en) * 2019-10-04 2024-04-12 株式会社村田制作所 Probe head
EP4185080A1 (en) 2021-11-18 2023-05-24 Rohde & Schwarz GmbH & Co. KG Rf connection system, electronic device

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Also Published As

Publication number Publication date
WO2009127302A1 (en) 2009-10-22
US8333611B2 (en) 2012-12-18
EP2263288A1 (en) 2010-12-22
US20110065318A1 (en) 2011-03-17
JP5200160B2 (en) 2013-05-15
ATE523928T1 (en) 2011-09-15
DE102008022100A1 (en) 2009-10-22
JP2011518410A (en) 2011-06-23

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