EP1021852A2 - Hf coaxial plug-in connector - Google Patents

Hf coaxial plug-in connector

Info

Publication number
EP1021852A2
EP1021852A2 EP97914089A EP97914089A EP1021852A2 EP 1021852 A2 EP1021852 A2 EP 1021852A2 EP 97914089 A EP97914089 A EP 97914089A EP 97914089 A EP97914089 A EP 97914089A EP 1021852 A2 EP1021852 A2 EP 1021852A2
Authority
EP
European Patent Office
Prior art keywords
housing
coaxial
coaxial connector
connector
contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97914089A
Other languages
German (de)
French (fr)
Other versions
EP1021852B1 (en
Inventor
Edgard Acke
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.)
TE Connectivity Solutions GmbH
Original Assignee
Tyco Electronics Logistics AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tyco Electronics Logistics AG filed Critical Tyco Electronics Logistics AG
Publication of EP1021852A2 publication Critical patent/EP1021852A2/en
Application granted granted Critical
Publication of EP1021852B1 publication Critical patent/EP1021852B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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 an RF coaxial connector for transmitting high-frequency electromagnetic waves with a housing, with at least one internal contact and with an external contact arranged coaxially around the internal contact.
  • HF coaxial connectors usually have a housing made of a solid material, which receives the respective connection contacts and holds them securely in position.
  • the housings for RF coaxial connectors are therefore usually made of solid metal as a sheet metal part or more often as a cast part made of metal injection molding.
  • metallic housings are not always advantageous to handle due to their weight. In addition, their production is complex and expensive. Finally, it should not be overlooked that metallic housings are relatively heavy, which can also be disadvantageous if weight aspects are relevant when using the plug connector.
  • the housing is formed as an injection molded part made of plastic, and that the housing has a wall section made of plastic and arranged coaxially around the inner contact, in which at least the inner wall facing the inner contact is provided with a sufficiently thick metallization layer .
  • the RF coaxial connector is of multi-pole design with a plurality of pairs of internal contacts and external contacts, the housing being a monoblock with a plurality of hollow cylindrical recesses, each forming a coaxial wall section, in each of which an internal contact sits centrally.
  • the at least the inner walls of all the recesses are provided with a metallization layer.
  • the layer thickness of the metallic layer is determined in accordance with the lowest frequency that occurs as planned, so that the layer thickness at a frequency of 50 MHz, for example, is at least 20 ⁇ m, but preferably 30 ⁇ m.
  • the minimum layer thickness is determined on the basis of the penetration depth of the alternating field that occurs. In this way it can be taken into account that depending on the frequency and the size of the applied alternating field, a different penetration depth results. With increasing frequency, the conductor current shifts more and more against a thin surface layer, the so-called skin effect, so that the current density increases there.
  • silver is preferably provided for the formation of the metallic layer as the layer material.
  • copper or, in special cases, gold can also be provided according to an alternative embodiment.
  • the layer material that is to say the metallization material
  • the metallic layer can either be arranged only on the inner surface or additionally on the outer housing surface of the housing.
  • a thickness of the metallization layer for HF frequencies greater than 50 MHz of 20 to 30 ⁇ m is easily sufficient.
  • Figure 2 shows a straight coupling part of a connector according to the invention.
  • FIG. 3 shows an angled plug part of a connector according to the invention
  • FIG. 5 shows a plug part of a multiple plug connector according to the invention
  • FIG. 6 shows a coupling part of a multiple connector according to the invention.
  • FIG. 1 shows a straight plug part 1 which, together with a straight coupling part 2 shown in FIG. 2, forms a straight plug connector 3.
  • This straight connector 3 is designed as a two-pole, electrically conductive RF coaxial connector.
  • the plug part 1 has a pin-like inner contact 4, which is surrounded coaxially spaced by a metallic sleeve 8a.
  • the sleeve 8a is connected to a cylindrical housing 8 of the plug part 1. Opposite the metallic sleeve 8a is not closer to this housing
  • the coaxial cable shown can be used or has already been used.
  • the housing 8, which is made of non-metallic material is provided with a sufficiently thick metallization layer 30 at least on its inner wall.
  • This metallization layer 30 ensures an electrical connection between the metallic sleeve 8a and the outer conductor of the coaxial cable inserted into the housing, provided that the latter is stripped accordingly.
  • the metallization layer 30 is thus a component of the entire external contact 5 of the plug part 1.
  • the pin-like internal contact 4 is held within the housing in a manner known per se.
  • a sleeve made of non-conductive material, such as plastic can also be provided.
  • the sleeve must be provided with a metallization layer on its inner wall or on the inner and outer wall, so that the required outer conductor function is also guaranteed.
  • the coupling part 2 of the connector 3 has a preferably resilient inner contact 6 in the form of a sleeve consisting of electrically conductive material, into which the inner contact 4 of the plug part 1 can be inserted.
  • the outer diameter of the preferably resilient sleeve is so large that good electrical contact between the two internal contacts 4, 6 is ensured.
  • the inner contact 6 is coaxially surrounded by a hollow cylindrical wall section of the housing 9 of the coupling part 2.
  • the housing 9 consists of
  • REPLACEMENT BLA ⁇ (RULE 26) non-conductive material, such as plastic, which enables significant weight savings compared to metallic housings.
  • a metallization layer 30 which preferably but not necessarily consists of silver or copper with a silver coating. The metallization layer 30 thus simultaneously forms the external contact 7 of the coupling part 2.
  • each housing 8, 9 is formed from an extrudable plastic, at least the mentioned wall sections of the housing 8 or 9 being provided with a metallization layer 30 which serves as an outer conductor or external contact.
  • This external contact 7 is to be electrically connected to the shielding, metallic sheathing of a cable, in particular a coaxial cable.
  • the inner contact 6 of the coupling part 2 is to be connected to the inner conductor of such a coaxial cable. The same applies to connector part 1.
  • the metallization layer can be arranged not only on the inner wall of the housing 8 or 9 but also on the outer wall.
  • FIG. 3 shows a further plug part 10 which is angular in comparison with the plug part 1 according to FIG. 1. Together with an angular coupling part 11 shown in FIG. 4, it forms a further plug connector 12, which is used for the angular connection of coaxial conductors (not shown in more detail).
  • the connector 12 is also provided with a housing 13 for the plug part 10 and with a housing 14 for the coupling part 11, the housing 14 again having a metallization layer 30 on its hollow cylindrical wall which coaxially surrounds the internal contact 6 is provided.
  • the multi-pole connector 60 consists of several straight-line coaxial connectors 41, which are combined into a unit 55 by means of a common mounting plate 42 on a base e.g. a printed circuit board 43 or a rear wall and by means of press-in contacts at a certain pitch of e.g. 5 mm are attached.
  • the connector 60 also consists of a base, e.g. on a circuit board 45 or an assembly arranged coaxial mating connectors 46, which are integrated in a number corresponding to the number of coaxial connectors 41 and at the same pitch as these in a monoblock 47.
  • This consists of non-conductive material and is provided with a metallization layer 30 at least on its hollow cylindrical inner walls which coaxially surround the inner contacts 48.
  • These eight metallization layers 30 form the different outer conductors for the eight coaxial mating connectors 41 integrated in it, their pin-like inner contacts 48 (FIG. 7) with their connections being insulated by bores 51 and 50 made of insulating material in bores 51 and perpendicular to them. th holes 52 of the monoblock 47 are added. It follows from this that the coaxial mating connectors 46 are designed in an embodiment angled by 90 ° to their direction of insertion.
  • connections of the internal contacts 48 of the coaxial mating connectors 46 and the external contact connections are press-in contacts 53 or 54 formed, which are arranged according to the 90 ° angle of the coaxial mating connector at an angle of 90 ° to the direction of insertion.
  • 5 and 6 show that in the illustrated embodiment of the RF coaxial connector 60 according to the invention two superimposed rows of coaxial connectors and accordingly two superimposed rows of coaxial mating connectors, each with four coaxial connectors 41 and four coaxial mating connectors 46 are provided, so that the coaxial connectors 41 form an 8-way unit 55 and the monoblock 47 is designed as an 8-way mating connector.
  • the monoblock 47 has eight press-in contacts 53 for the inner conductor connections and 5 ⁇ 3 press-in contacts 54 for the outer conductor connections.
  • the press-in contacts 54 are connected to the metallization layer 30, which is applied to all inner walls of the housing of the monoblock 47, in an electrically conductive manner.
  • the press-in contacts 54 have projecting wall sections 72 which lie flat against the metallization layer 30.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Non-Reversible Transmitting Devices (AREA)

Abstract

The invention relates to an HF coaxial plug-in connector for transmitting high-frequency electromagnetic waves, comprising a housing (8, 9, 13, 14, 47), at least one internal contact (4, 6, 48), and an external contact arranged coaxially around the internal contact (4, 6, 48). The housing (8, 9, 13, 14, 47) is configured as an injection-moulded plastic part and has a wall area made of plastic and arranged coaxially around the internal contact (4, 6, 48). At least the inner wall facing the internal contact (4, 6, 48) is provided with a metallizing layer (30). Said plug-in connector is preferably designed as a multipolar connector.

Description

Beschreibungdescription
HF-Koaxial-SteckverbinderRF coaxial connector
Die Erfindung betrifft einen HF-Koaxial-Steckverbinder zur Übertragung hochfrequenter elektromagnetischer Wellen mit einem Gehäuse, mit wenigstens einem Innenkontakt und mit einem koaxial um den Innenkontakt angeordneten Außenkontakt .The invention relates to an RF coaxial connector for transmitting high-frequency electromagnetic waves with a housing, with at least one internal contact and with an external contact arranged coaxially around the internal contact.
HF-Koaxial-Steckverbinder besitzen üblicherweise ein Gehäuse aus einem festen Werkstoff, der die jeweiligen Verbindungskontakte aufnimmt und sicher in Position hält.HF coaxial connectors usually have a housing made of a solid material, which receives the respective connection contacts and holds them securely in position.
Aus der EP 0 582 960 AI ist es bekannt, mehrpolige HF- Koaxial-Steckverbinder dadurch zu realisieren, daß mehrere üblich aufgebaute HF-Koaxialstecker in einen aus leitendem Material, also Metall, bestehenden Monoblock einsteckbar sind. Hierfür weist der Monoblock hohlzylinderför ige Ausnehmungen auf, in denen jeweils zentral ein Kontaktstift sitzt, der als Innenleiter dient. Der metallische Monoblock bildet für jeden Koaxialsteckverbinder, der eingesteckt wird, einen gemeinsamen Außenleiter.From EP 0 582 960 AI it is known to realize multi-pole RF coaxial connectors by inserting several conventionally constructed RF coaxial connectors into a monoblock made of conductive material, ie metal. For this purpose, the monoblock has hollow cylindrical recesses, in each of which a contact pin sits centrally, which serves as an inner conductor. The metallic monoblock forms a common outer conductor for each coaxial connector that is inserted.
Die Gehäuse für HF-Koaxial-Steckverbinder werden also übli- cherweise aus massivem Metall als Blechformteil oder häufiger als Gußteil aus Metallspritzguß gefertigt.The housings for RF coaxial connectors are therefore usually made of solid metal as a sheet metal part or more often as a cast part made of metal injection molding.
Metallische Gehäuse sind jedoch in der Handhabung aufgrund ihres Gewichtes nicht immer vorteilhaft. Darüber hinaus ist ihre Herstellung aufwendig und kostspielig. Schließlich darf auch nicht übersehen werden, daß metallische Gehäuse verhältnismäßig schwer sind, was ebenfalls nachteilig sein kann, wenn Gewichtsaspekte beim Einsatz der Steckverbinder relevant sind.However, metallic housings are not always advantageous to handle due to their weight. In addition, their production is complex and expensive. Finally, it should not be overlooked that metallic housings are relatively heavy, which can also be disadvantageous if weight aspects are relevant when using the plug connector.
Ausgehend von diesem Stand der Technik ist es Aufgabe der Erfindung, einen HF-Koaxial-Steckverbinder der eingangs ge- nannten Art zu schaffen, welcher bei ausreichender Außenlei- teroberflächendicke einfach und kostengünstigst herstellbar ist. Darüber hinaus soll bei dem aufzufindenen HF-Koaxial- Steckverbinder auch eine sichere elektrische Verbindung mit einem Außenleiter eines Koaxialgegensteckers, also die Außen- leiterfunktion, gewährleistet sein.Based on this prior art, it is an object of the invention to provide an RF coaxial connector to create named type, which is simple and inexpensive to manufacture with a sufficient outer conductor surface thickness. In addition, in the case of the RF coaxial connector to be found, a secure electrical connection to an outer conductor of a coaxial mating connector, that is to say the outer conductor function, is also to be guaranteed.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Gehäuse als Spritzgießteil aus Kunststoff gebildet ist, und daß das Gehäuse einen aus Kunststoff bestehenden und um den Innenkontakt koaxial herum angeordneten Wandabschnitt aufweist, bei dem mindestens die dem Innenkontakt zugewandte Innenwandung mit einer ausreichend dicken Metallisierungsschicht versehen ist.The object is achieved in that the housing is formed as an injection molded part made of plastic, and that the housing has a wall section made of plastic and arranged coaxially around the inner contact, in which at least the inner wall facing the inner contact is provided with a sufficiently thick metallization layer .
Zwar ist es aus Elektronik 7./8.4.82, Seite 146 bereits bekannt, bei mehrpoligen Steckverbindern ein Kunststoffgehäuse vorzusehen und dieses aus Abschirmgründen mit einer Oberflächenmetallisierung zu versehen. Bei diesen mehrpoligen Steck- verhindern handelt es sich jedoch nicht um KoaxialSteckverbinder, bei denen immer ein Kontaktpaar aus Innenkontakt/ koaxialer Außenkontakt besteht. Vielmehr weisen diese bekannten Steckverbinder mehrere Kontaktstifte auf, welche von einer gemeinsamen Gehäuseberandung, die oberflächenmetallisiert ist, umgeben sind. Eine Außenleiterfunktion durch Metallisierung einer hohlzylindrischen Innenwandung des Gehäuses zu realisieren spielt also dort keine Rolle.It is already known from electronics 7./8.4.82, page 146, to provide a plastic housing for multipole connectors and to provide this with a surface metallization for shielding reasons. However, these multi-pole plug preventers are not coaxial plug connectors, in which a contact pair always consists of an internal contact / coaxial external contact. Rather, these known plug connectors have a plurality of contact pins, which are surrounded by a common housing edge, which is surface-metallized. Realizing an outer conductor function by metallizing a hollow cylindrical inner wall of the housing therefore does not matter there.
In einer besonders bevorzugten Ausführungsform der Erfindung ist der HF-Koaxial-Steckverbinder mehrpolig ausgebildet mit mehreren Paaren von Innenkontakten und Außenkontakten, wobei das Gehäuse ein Monoblock ist mit mehreren, jeweils einen koaxialen Wandabschnitt bildenden, hohlzylindrischen Ausnehmungen, in denen zentral jeweils ein Innenkontakt sitzt. Dar- über hinaus sind die zumindest die Innenwandungen sämtlicher Ausnehmungen mit einer Metallisierungsschicht versehen. Entsprechend einer vorteilhaften Weiterbildung der Erfindung ist die Schichtdicke der metallischen Schicht entsprechend der niedrigsten planmäßig auftretenden Frequenz festgelegt, so daß die Schichtdicke bei einer Frequenz von zum Beispiel 50 MHz wenigstens 20 μm, vorzugsweise aber 30 μm, beträgt.In a particularly preferred embodiment of the invention, the RF coaxial connector is of multi-pole design with a plurality of pairs of internal contacts and external contacts, the housing being a monoblock with a plurality of hollow cylindrical recesses, each forming a coaxial wall section, in each of which an internal contact sits centrally. In addition, the at least the inner walls of all the recesses are provided with a metallization layer. According to an advantageous development of the invention, the layer thickness of the metallic layer is determined in accordance with the lowest frequency that occurs as planned, so that the layer thickness at a frequency of 50 MHz, for example, is at least 20 μm, but preferably 30 μm.
Gemäß einer bevorzugten Verfahrensweise entsprechend der Erfindung erfolgt die Festlegung der Mindestschichtdicke anhand der Eindringtiefe des auftretenden Wechselfeldes. Hierdurch kann berücksichtigt werden, daß je nach Höhe der Frequenz und der Größe des anliegenden Wechselfeldes eine unterschiedliche Eindringtiefe resultiert. Mit zunehmender Frequenz verlagert sich der Leiterstrom immer mehr gegen eine dünne Oberflächenschicht, der sogenannte Skineffekt, so daß dort die Strom- dichte ansteigt.According to a preferred procedure according to the invention, the minimum layer thickness is determined on the basis of the penetration depth of the alternating field that occurs. In this way it can be taken into account that depending on the frequency and the size of the applied alternating field, a different penetration depth results. With increasing frequency, the conductor current shifts more and more against a thin surface layer, the so-called skin effect, so that the current density increases there.
Entsprechend einer bevorzugten Ausgestaltung der Erfindung ist für die Bildung der metallischen Schicht als Schichtwerkstoff vorzugsweise Silber vorgesehen. An Stelle von Silber kann aber gemäß einer alternativen Ausführungsform auch Kupfer oder in besonderen Fällen Gold vorgesehen sein.According to a preferred embodiment of the invention, silver is preferably provided for the formation of the metallic layer as the layer material. Instead of silver, copper or, in special cases, gold can also be provided according to an alternative embodiment.
Gemäß einer Weiterbildung der Erfindung wird der Schichtwerkstoff, also das Metallisierungsmaterial galvanisch auf der vorbehandelten Gehäuseoberfläche aufgebracht. Dabei kann die metallische Schicht abhängig vom jeweiligen Anwendungsfall und Einsatzzweck entweder nur auf der Innenoberfläche oder zusätzlich noch auf der äußeren Gehäuseoberfläche des Gehäuses angeordnet sein.According to a development of the invention, the layer material, that is to say the metallization material, is applied galvanically to the pretreated housing surface. Depending on the respective application and intended use, the metallic layer can either be arranged only on the inner surface or additionally on the outer housing surface of the housing.
Eine Dicke der Metallisierungsschicht für HF-Frequenzen größer 50 MHz von 20 bis 30μm reicht ohne weiteres aus.A thickness of the metallization layer for HF frequencies greater than 50 MHz of 20 to 30 μm is easily sufficient.
Diese und weitere vorteilhafte Merkmale sind Gegenstand der Unteransprüche. Anhand von in nachfolgenden Zeichnungen dargestellten Ausfüh- rungsbeispielen wird die Erfindung näher erläutert und beschrieben.These and other advantageous features are the subject of the dependent claims. The invention is explained and described in more detail with reference to exemplary embodiments shown in the following drawings.
Es zeigen:Show it:
Fig. 1 ein gerades Steckerteil eines Steckverbinders gemäß der Erfindung;1 shows a straight plug part of a connector according to the invention;
Fig. 2 ein gerades Kupplungsteil eines Steckverbinders gemäß der Erfindung;Figure 2 shows a straight coupling part of a connector according to the invention.
Fig. 3 ein abgewinkeltes Steckerteil eines Steckverbinders gemäß der Erfindung;3 shows an angled plug part of a connector according to the invention;
Fig. 4 ein abgewinkeltes Kupplungsteil eines Steckverbinders gemäß der Erfindung;4 shows an angled coupling part of a connector according to the invention;
Fig. 5 ein Steckerteil eines Mehrfach-Steckverbinders ge- maß der Erfindung;5 shows a plug part of a multiple plug connector according to the invention;
Fig. 6 ein Kupplungsteil eines Mehrfach-Steckverbinders gemäß der Erfindung; und6 shows a coupling part of a multiple connector according to the invention; and
Fig. 7 das Kupplungsteil von Fig.6 im Schnitt.Fig. 7, the coupling part of Figure 6 in section.
In Fig. 1 ist ein gerades Steckerteil 1 gezeigt, das gemeinsam mit einem in Fig. 2 gezeigten geraden Kupplungsteil 2 eine geraden Steckverbinder 3 bildet .1 shows a straight plug part 1 which, together with a straight coupling part 2 shown in FIG. 2, forms a straight plug connector 3.
Dieser gerade Steckverbinder 3 ist als zweipoliger elektrisch leitender HF-Koaxial-Steckverbinder ausgebildet. Hierzu weist das Steckerteil 1 einen stiftartigen Innenkontakt 4 auf, welcher koaxial beabstandet von einer metallischen Hülse 8a um- geben ist. Die Hülse 8a ist mit einem zylindrischen Gehäuse 8 des Steckerteiles 1 in Verbindung. Gegenüberliegend zur metallischen Hülse 8a ist in dieses Gehäuse ein nicht näher dargestelltes Koaxialkabel einsetzbar oder bereits eingesetzt. Damit die koaxiale Steckverbindung gewährleistet ist, ist das aus nichtmetallischem Material bestehende Gehäuse 8 zumindest an seiner Innenwandung mit einer ausreichend dicken Metallisierungsschicht 30 versehen. Diese Metallisierungs- schicht 30 stellt eine elektrische Verbindung zwischen metallischer Hülse 8a und Außenleiter des in das Gehäuse eingesteckten Koaxialkabels sicher, sofern letzteres entsprechend abisoliert ist. Die Metallisierungsschicht 30 ist also Be- standteil des gesamten Außenkontaktes 5 des Steckerteiles 1. Der stiftartige Innenkontakt 4 ist in an sich bekannter Weise innerhalb des Gehäuses gehalten. Anstelle einer metallische Hülse kann auch eine Hülse aus nichtleitendem Material, wie z.B. Kunststoff vorgesehen sein. Die Hülse ist jedoch an ih- rer Innenwand oder an Innen- und Außenwand mit einer Metallisierungsschicht zu versehen, so daß die geforderte Außenlei- terfunktion auch gewährleistet ist.This straight connector 3 is designed as a two-pole, electrically conductive RF coaxial connector. For this purpose, the plug part 1 has a pin-like inner contact 4, which is surrounded coaxially spaced by a metallic sleeve 8a. The sleeve 8a is connected to a cylindrical housing 8 of the plug part 1. Opposite the metallic sleeve 8a is not closer to this housing The coaxial cable shown can be used or has already been used. In order to ensure the coaxial plug connection, the housing 8, which is made of non-metallic material, is provided with a sufficiently thick metallization layer 30 at least on its inner wall. This metallization layer 30 ensures an electrical connection between the metallic sleeve 8a and the outer conductor of the coaxial cable inserted into the housing, provided that the latter is stripped accordingly. The metallization layer 30 is thus a component of the entire external contact 5 of the plug part 1. The pin-like internal contact 4 is held within the housing in a manner known per se. Instead of a metallic sleeve, a sleeve made of non-conductive material, such as plastic, can also be provided. However, the sleeve must be provided with a metallization layer on its inner wall or on the inner and outer wall, so that the required outer conductor function is also guaranteed.
Grundsätzlich ist zur Dimensionierung der Metallisierungs- schicht 30 anzumerken, daß der geforderte Wellenwiderstand des Steckverbinders einzuhalten ist entsprechend der bekannten FormelBasically, for the dimensioning of the metallization layer 30, it should be noted that the required characteristic impedance of the plug connector must be observed in accordance with the known formula
mit ZL = Wellenwiderstand, εr = Dielektrizitätskonstante, D = with Z L = characteristic impedance, ε r = dielectric constant, D =
Außenleiterdurchmesser, d = Innenleiterdurchmesser .Outer conductor diameter, d = inner conductor diameter.
Das Kupplungsteil 2 des Steckverbinders 3 weist einen vor- zugsweise federnden Innenkontakt 6 in Form einer aus elektrisch leitendem Material bestehenden Hülse auf, in welche der Innenkontakt 4 des Steckerteiles l einschiebbar ist . Der Außendurchmesser der vorzugsweise federnden Hülse ist dabei so groß, daß ein guter elektrischer Kontakt beider Innenkon- takte 4, 6 gewährleistet ist. Der Innenkontakt 6 ist von einem hohlzylinderförmigen Wandabschnitt des Gehäuses 9 des Kupplungsteiles 2 koaxial umgeben. Das Gehäuse 9 besteht ausThe coupling part 2 of the connector 3 has a preferably resilient inner contact 6 in the form of a sleeve consisting of electrically conductive material, into which the inner contact 4 of the plug part 1 can be inserted. The outer diameter of the preferably resilient sleeve is so large that good electrical contact between the two internal contacts 4, 6 is ensured. The inner contact 6 is coaxially surrounded by a hollow cylindrical wall section of the housing 9 of the coupling part 2. The housing 9 consists of
ERSATZBLAπ(REGEL26) nicht leitendem Material, z.B. Kunststoff, wodurch eine deutliche Gewichtseinsparung gegenüber metallischen Gehäusen möglich ist. Um dennoch die Außenleiterfunktion sicherzustellen, ist zumindest die Innenwandung des hohlzylinderförmigen Wandabschnittes des Gehäuses mit einer Metallisierungsschicht 30, die vorzugsweise aber nicht notwendigerweise aus Silber oder Kupfer mit Silberaufläge besteht, überzogen. Die Metallisierungsschicht 30 bildet also gleichzeitig den Außenkontakt 7 des Kupplungsteiles 2.REPLACEMENT BLAπ (RULE 26) non-conductive material, such as plastic, which enables significant weight savings compared to metallic housings. In order to nevertheless ensure the outer conductor function, at least the inner wall of the hollow cylindrical wall section of the housing is covered with a metallization layer 30, which preferably but not necessarily consists of silver or copper with a silver coating. The metallization layer 30 thus simultaneously forms the external contact 7 of the coupling part 2.
In erfindungsgemäßer Ausgestaltung ist vorgesehen, daß jedes Gehäuse 8, 9 aus einem extrudierbaren Kunststoff gebildet ist, wobei zumindest die erwähnten Wandabschnitte des Gehäuses 8 bzw. 9 mit einer Metallisierungsschicht 30 versehen sind, die als Außenleiter bzw. Außenkontakt dient. Dieser Außenkontakt 7 ist mit der abschirmenden, metallischen Ummante- lung eines Kabels, insbesondere eines Koaxialkabels elektrisch zu verbinden. Der Innenkontakt 6 des Kupplungsteiles 2 ist dagegen mit dem Innenleiter eines solchen Koaxialkabels zu verbinden. Entsprechendes gilt auch für den Steckerteil 1.In an embodiment according to the invention it is provided that each housing 8, 9 is formed from an extrudable plastic, at least the mentioned wall sections of the housing 8 or 9 being provided with a metallization layer 30 which serves as an outer conductor or external contact. This external contact 7 is to be electrically connected to the shielding, metallic sheathing of a cable, in particular a coaxial cable. The inner contact 6 of the coupling part 2, however, is to be connected to the inner conductor of such a coaxial cable. The same applies to connector part 1.
Gemäß der Erfindung kann die Metallisierungsschicht nicht nur an der Innenwandung des Gehäuses 8 bzw. 9 sondern auch zusätzlich an der Außenwandung angeordnet sein.According to the invention, the metallization layer can be arranged not only on the inner wall of the housing 8 or 9 but also on the outer wall.
In Fig. 3 ist ein weiteres Steckerteil 10 dargestellt, das im Vergleich mit dem Steckerteil 1 gemäß Fig. 1 winkelförmig ausgebildet ist. Gemeinsam mit einem in Fig. 4 dargestellten winkelförmigen Kupplungsteil 11 bildet es einen weiteren Steckverbinder 12, der zum winkligen Anschluß von nicht näher gezeigten Koaxialleitern dient.FIG. 3 shows a further plug part 10 which is angular in comparison with the plug part 1 according to FIG. 1. Together with an angular coupling part 11 shown in FIG. 4, it forms a further plug connector 12, which is used for the angular connection of coaxial conductors (not shown in more detail).
Das Inventar dieses Steckverbinders 12 ist nahezu identisch mit dem der bereits beschriebenen Steckverbinder 3, d. h. die Innen- und Außenkontakte 4, 5, 6, 7 können prinzipiell auch in dem Steckverbinder 12 zum Einsatz kommen. Entsprechend der Erfindung ist auch der Steckverbinder 12 mit einem Gehäuse 13 für das Steckerteil 10 und mit einem Gehäuse 14 für das Kupplungsteil 11 versehen, wobei das Gehäuse 14 wieder an seiner hohlzylindrischen Wandung, die den Innenkon- takt 6 koaxial umgibt, mit einer Metallisierungsschicht 30 versehen ist.The inventory of this connector 12 is almost identical to that of the connector 3 already described, ie the inner and outer contacts 4, 5, 6, 7 can in principle also be used in the connector 12. According to the invention, the connector 12 is also provided with a housing 13 for the plug part 10 and with a housing 14 for the coupling part 11, the housing 14 again having a metallization layer 30 on its hollow cylindrical wall which coaxially surrounds the internal contact 6 is provided.
In den Figuren 5, 6 und 7 ist ein achtpoliger und damit mehrpoliger HF-Koaxial-Steckverbinder 60 dargestellt. Der mehrpo- lige Steckverbinder 60 besteht nach Figuren 5 und 6 aus mehreren Koaxialsteckern 41 in gerader Ausführung, die mittels einer gemeinsamen Montageplatte 42 zu einer Einheit 55 zusammengefaßt an einer Unterlage z.B. einer Leiterplatte 43 oder einer Rückwand angeordnet und mittels Einpreßkontakten in ei- nem bestimmten Teilungsabstand von z.B. 5 mm befestigt sind. Außerdem besteht der Steckverbinder 60 noch aus einer Unterlage, z.B. auf einer Leiterplatte 45 oder einer Baugruppe angeordneten koaxialen Gegensteckverbindern 46, die in einer der Anzahl der Koaxialstecker 41 entsprechenden Anzahl und in demselben Teilungsabstand wie diese in einem Monoblock 47 integriert sind. Dieser besteht aus nichtleitendem Material und ist zumindest an seinen hohlzylindrischen, die Innenkontakte 48 koaxial umgebenden Innenwandungen mit einer Metallisierungsschicht 30 versehen. Diese acht Metallisierungsschichten 30 bilden die unterschiedlichen Außenleiter für die acht in ihm integrierten koaxialen Gegensteckverbinder 41, wobei deren stiftartige Innenkontakte 48 (Fig. 7) mit ihren Anschlüssen jeweils durch aus Isoliermaterial bestehende Stütz- teile 49 und 50 isoliert in Bohrungen 51 und hierzu senkrech- ten Bohrungen 52 des Monoblocks 47 aufgenommen sind. Daraus ergibt sich, daß die koaxialen Gegensteckverbinder 46 in um 90° zu ihrer Steckrichtung abgewinkelter Ausführung ausgebildet sind.5, 6 and 7, an eight-pole and thus multi-pole RF coaxial connector 60 is shown. According to FIGS. 5 and 6, the multi-pole connector 60 consists of several straight-line coaxial connectors 41, which are combined into a unit 55 by means of a common mounting plate 42 on a base e.g. a printed circuit board 43 or a rear wall and by means of press-in contacts at a certain pitch of e.g. 5 mm are attached. The connector 60 also consists of a base, e.g. on a circuit board 45 or an assembly arranged coaxial mating connectors 46, which are integrated in a number corresponding to the number of coaxial connectors 41 and at the same pitch as these in a monoblock 47. This consists of non-conductive material and is provided with a metallization layer 30 at least on its hollow cylindrical inner walls which coaxially surround the inner contacts 48. These eight metallization layers 30 form the different outer conductors for the eight coaxial mating connectors 41 integrated in it, their pin-like inner contacts 48 (FIG. 7) with their connections being insulated by bores 51 and 50 made of insulating material in bores 51 and perpendicular to them. th holes 52 of the monoblock 47 are added. It follows from this that the coaxial mating connectors 46 are designed in an embodiment angled by 90 ° to their direction of insertion.
Wie insbesondere der Figur 7 zu entnehmen ist, sind die Anschlüsse der Innenkontakte 48 der koaxialen Gegensteckverbinder 46 und die Außenkontaktanschlüsse als Einpreßkontakte 53 bzw. 54 ausgebildet, die entsprechend der 90°-Abwinkelung der koaxialen Gegensteckverbinder um 90° abgewinkelt zur Steckrichtung angeordnet sind. Die Fig. 5 und 6 zeigen, daß bei dem dargestellten Ausführungsbeispiel des erfindungsgemäßen HF-Koaxial-Steckverbinders 60 zwei übereinanderliegende Reihen von Koaxialsteckern und dementsprechend zwei übereinanderliegende Reihen von koaxialen Gegensteckverbindern mit jeweils vier Koaxialsteckern 41 bzw. vier koaxialen Gegensteckverbindern 46 vorgesehen sind, so daß die Koaxialstecker 41 eine 8-fach-Einheit 55 bilden und der Monoblock 47 als 8- fach-Gegensteckverbinder ausgebildet ist. In diesem Fall weist der Monoblock 47 acht Einpreßkontakte 53 für die Innen- leiteranschlüsse und 5 x 3 Einpreßkontakte 54 für die Außen- leiteranschlüsse auf.As can be seen in particular from FIG. 7, the connections of the internal contacts 48 of the coaxial mating connectors 46 and the external contact connections are press-in contacts 53 or 54 formed, which are arranged according to the 90 ° angle of the coaxial mating connector at an angle of 90 ° to the direction of insertion. 5 and 6 show that in the illustrated embodiment of the RF coaxial connector 60 according to the invention two superimposed rows of coaxial connectors and accordingly two superimposed rows of coaxial mating connectors, each with four coaxial connectors 41 and four coaxial mating connectors 46 are provided, so that the coaxial connectors 41 form an 8-way unit 55 and the monoblock 47 is designed as an 8-way mating connector. In this case, the monoblock 47 has eight press-in contacts 53 for the inner conductor connections and 5 × 3 press-in contacts 54 for the outer conductor connections.
Wie aus der Schnittansicht von Fig.7 ersichtlich, sind die Einpreßkontakte 54 mit der Metallisierungsschicht 30, die auf sämtlichen Innenwandungen des Gehäuses des Monoblockes 47 aufgebracht ist, elektrisch leitend in Verbindung. Hierfür weisen die Einpreßkontakte 54 hervorspringende Wandabschnitte 72 auf, welche flächig an der Metallisierungsschicht 30 anliegen. As can be seen from the sectional view of FIG. 7, the press-in contacts 54 are connected to the metallization layer 30, which is applied to all inner walls of the housing of the monoblock 47, in an electrically conductive manner. For this purpose, the press-in contacts 54 have projecting wall sections 72 which lie flat against the metallization layer 30.
BezugszeichenlisteReference list
1 Steckerteil, gerade1 plug part, straight
2 Kupplungsteil , gerade 3 Steckverbinder, gerade2 coupling parts, straight 3 connectors, straight
4 Innenkontakt4 internal contact
5 Außenkontakt5 external contact
6 Innenkontakt6 internal contact
7 Außenkontakt 8 Gehäuse7 external contact 8 housing
8a metallische Hülse8a metallic sleeve
9 Gehäuse9 housing
10 Steckerteil, winklig10 connector part, angled
11 Kupplungsteil, winklig 12 Steckverbinder, winklig11 coupling part, angled 12 connector, angled
13 Gehäuse13 housing
14 Gehäuse14 housing
30 Metallisierungsschicht30 metallization layer
41 Koaxialstecker 42 Montageplatte41 Coaxial connector 42 Mounting plate
43 Leiterplatte43 printed circuit board
45 Leiterplatte45 printed circuit board
46 koaxialer Gegensteckverbinder46 coaxial mating connectors
47 Gehäuse, Monoblock 48 Innenkontakt47 housing, monoblock 48 internal contact
49, 50 Stützteile49, 50 support parts
51, 52 Bohrungen51, 52 holes
53, 54 Einpreßkontakte53, 54 press-in contacts
55 Koaxialstecker-Einheit 56 Führungsstifte55 Coaxial connector unit 56 guide pins
57 Führungsbohrungen57 guide holes
60 mehrpoliger Steckverbinder60 multi-pin connectors
72 Vorsprung 72 head start

Claims

Patentansprüche claims
1. HF-Koaxial-Steckverbinder zur Übertragung hochfrequenter elektromagnetischer Wellen mit einem Gehäuse (8, 9, 13, 14, 47), mit wenigstens einem Innenkontakt (4, 6, 48) und mit einem koaxial um den Innenkontakt (4, 6, 48) angeordneten Außenkontakt , d a d u r c h g e k e n n z e i c h n e t, daß das Gehäuse (8, 9, 13, 14, 47) als Spritzgießteil aus Kunststoff ausge- bildet ist, und daß das Gehäuse (8, 9, 13, 14, 47) einen aus Kunststoff bestehenden und um den Innenkontakt (4, 6, 48) koaxial herum angeordneten Wandabschnitt aufweist, bei dem mindestens die dem Innenkontakt (4, 6, 48) zugewandte Innenwandung mit einer Metallisierungsschicht (30) versehen ist, welche als Außenkontakt dient.1. RF coaxial connector for transmitting high-frequency electromagnetic waves with a housing (8, 9, 13, 14, 47), with at least one internal contact (4, 6, 48) and with a coaxial around the internal contact (4, 6, 48) arranged external contact, characterized in that the housing (8, 9, 13, 14, 47) is designed as an injection molded part made of plastic, and that the housing (8, 9, 13, 14, 47) is made of plastic and around the inner contact (4, 6, 48) coaxially arranged wall section, in which at least the inner wall (4, 6, 48) facing the inner wall is provided with a metallization layer (30) which serves as an external contact.
2. HF-Koaxial-Steckverbinder nach Anspruch 1, dadurch gekennzeichnet, daß der HF-Koaxial-Steckverbinder (60) mehrpolig ausgebildet ist mit mehreren Paaren von Innenkontakten (48) und Außenkontakten, und daß das Gehäuse (47) als Monoblock ausgebildet ist mit mehreren, jeweils einen koaxialen Wandabschnitt bildenden, hohlzylindrischen Ausnehrrαmgen, in denen zentral jeweils ein Innenkontakt (48) sitzt, und daß die Innenwandungen sämtlicher Ausnehmungen mit einer Metallisie- rungsschicht (30) versehen sind.2. RF coaxial connector according to claim 1, characterized in that the RF coaxial connector (60) is multi-pole with a plurality of pairs of internal contacts (48) and external contacts, and that the housing (47) is designed as a monoblock with a plurality of hollow cylindrical Ausnehrrαmgen each forming a coaxial wall section, in each of which an inner contact (48) sits centrally, and that the inner walls of all the recesses are provided with a metallization layer (30).
3. HF-Koaxial-Steckverbinder nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Schichtdicke der Metallisierungsschicht (30) wenigstens gleich der Eindringtiefe der durch den Steckverbinder zu übertragenden elektromagnetischen Wellen ist.3. RF coaxial connector according to one of claims 1 or 2, characterized in that the layer thickness of the metallization layer (30) is at least equal to the penetration depth of the electromagnetic waves to be transmitted through the connector.
4. HF-Koaxial-Steckverbinder nach Anspruch 3, dadurch gekennzeichnet, daß die Schichtdicke wenigstens 10 μm beträgt. 4. RF coaxial connector according to claim 3, characterized in that the layer thickness is at least 10 microns.
5. HF-Koaxial-Steckverbinder nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß als Metallisierungsmaterial Silber vorgesehen ist.5. RF coaxial connector according to one of claims 1 to 4, characterized in that silver is provided as the metallization material.
6. HF-Koaxial-Steckverbinder nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß als Metallisierungsmaterial Kupfer vorgesehen ist .6. RF coaxial connector according to one of claims 1 to 4, characterized in that copper is provided as the metallization material.
7. HF-Koaxial-Steckverbinder nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß als Metallisierungsmaterial7. RF coaxial connector according to one of claims 1 to 4, characterized in that as the metallization material
Gold vorgesehen ist .Gold is provided.
8. HF-Koaxial-Steckverbinder nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß das Metallisierungsmate- rial auf der vorbehandelten Oberfläche des Gehäuses (8, 9, 13, 14, 47) aufgedampft ist.8. RF coaxial connector according to one of the preceding claims, characterized in that the metallization material is vapor-deposited on the pretreated surface of the housing (8, 9, 13, 14, 47).
9. HF-Koaxial-Steckverbinder nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß das Gehäuse (8, 9,) als gerader Steckverbinder (3) ausgebildet ist.9. RF coaxial connector according to one of the preceding claims, characterized in that the housing (8, 9,) is designed as a straight connector (3).
10. HF-Koaxial-Steckverbinder nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Steckverbinder (12) ein als Winkelsteckverbinder ausgebildetes Gehäuse (13, 14) be- sitzt. 10. RF coaxial connector according to one of claims 1 to 9, characterized in that the connector (12) has a housing designed as an angle connector (13, 14).
EP97914089A 1997-01-28 1997-01-28 Hf coaxial plug-in connector Expired - Lifetime EP1021852B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE1997/000153 WO1998033243A2 (en) 1997-01-28 1997-01-28 Hf coaxial plug-in connector

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EP1021852A2 true EP1021852A2 (en) 2000-07-26
EP1021852B1 EP1021852B1 (en) 2001-09-12

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EP97914089A Expired - Lifetime EP1021852B1 (en) 1997-01-28 1997-01-28 Hf coaxial plug-in connector

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EP (1) EP1021852B1 (en)
AT (1) ATE205642T1 (en)
DE (1) DE59704625D1 (en)
WO (1) WO1998033243A2 (en)

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Also Published As

Publication number Publication date
WO1998033243A3 (en) 2001-12-20
EP1021852B1 (en) 2001-09-12
DE59704625D1 (en) 2001-10-18
WO1998033243A2 (en) 1998-07-30
ATE205642T1 (en) 2001-09-15

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