EP0386333A1 - Elément de connexion pour un câble à haute fréquence et procédé pour sa fabrication - Google Patents

Elément de connexion pour un câble à haute fréquence et procédé pour sa fabrication Download PDF

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Publication number
EP0386333A1
EP0386333A1 EP89122635A EP89122635A EP0386333A1 EP 0386333 A1 EP0386333 A1 EP 0386333A1 EP 89122635 A EP89122635 A EP 89122635A EP 89122635 A EP89122635 A EP 89122635A EP 0386333 A1 EP0386333 A1 EP 0386333A1
Authority
EP
European Patent Office
Prior art keywords
inner conductor
contact
cable
connection element
plastic
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.)
Withdrawn
Application number
EP89122635A
Other languages
German (de)
English (en)
Inventor
Bernd Dipl.-Ing. Gerlach
Dieter Kastrop
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.)
TKM Telekommunikation und Elektronik GmbH
Walter Rose GmbH and Co KG
Original Assignee
TKM Telekommunikation und Elektronik GmbH
Walter Rose GmbH and Co KG
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 TKM Telekommunikation und Elektronik GmbH, Walter Rose GmbH and Co KG filed Critical TKM Telekommunikation und Elektronik GmbH
Publication of EP0386333A1 publication Critical patent/EP0386333A1/fr
Withdrawn legal-status Critical Current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
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/0518—Connection to outer conductor by crimping or by crimping ferrule

Definitions

  • connection element for a high-frequency cable according to the preamble of claim 1 and a method for its production according to the preamble of claims 13 or 14.
  • Coaxial high-frequency cables have been used for a wide variety of applications for a long time. Recently they have been increasingly used in broadband communication networks, e.g. for a wired television supply.
  • the high-frequency cables used are usually provided at their ends with plugs and sockets with which they can be inserted into appropriately designed plug-in devices of other active or passive components. It is important here that a high-frequency, technically uniform transition with high contact quality is created.
  • Connection elements are known whose inner conductor contact is connected to a coaxially arranged contact sleeve via spacer parts.
  • the inner conductor contact is usually connected to the inner conductor of the cable by screwing or squeezing.
  • the outer conductor can also be connected to the outer conductor of the cable by screwing or crimping.
  • RF connectors have also become known from "Rhode & Schwarz Mitteilungen” H. 19, 1965 p. 192, which have fixed support parts with low dielectric constant provided with recesses in order to match the characteristic impedance of the lines to be connected to one another as precisely as possible.
  • a coaxial high-frequency connector is known from DE-GM 79 27 003, in which the inner conductor is fixed concentrically by an injection-molded or vulcanized insulating body. A wave impedance adjustment is not provided.
  • the known connector plugs do not allow the automated assembly of cable sections with plugs or sockets.
  • the creation of a cable with plugs and sockets is therefore labor-intensive and costly and not ideally suited for mass production.
  • the invention has for its object to provide a connector for a high-frequency cable that enables automated assembly of the high-frequency cable with the connector, which requires only a small amount of material, good high-frequency properties and great durability.
  • the invention is also based on the object of specifying a method for producing such a connector.
  • connection element in particular - plugs or sockets, with a central inner conductor (2), an outer conductor (6) arranged coaxially thereto and an insulation in between, the connection element connecting one with the inner conductor (2) of the cable (3)
  • Connectable central inner conductor contact (4) which is surrounded by a coaxially arranged and with the outer conductor (6) of the cable (3) connected contact sleeve (1), which is characterized in that the space between the inner conductor contact (4) and the contact sleeve ( 1) is filled with a plastic filling (7) matched to the cable (3) in the impedance.
  • the invention enables the automated attachment of connection elements to high-frequency cable sections.
  • the number of mechanical elements used is limited to the minimum possible.
  • the plastic filling introduced into the interior between the inner conductor contact and the outer sleeve serves in particular to stabilize the inner conductor contact, to maintain the wave resistance, to attach the connecting element to the cable, to protect against vibrations for the connection between the inner conductor and the inner conductor contact, and the gas and water tightness of the connector .
  • Automated production also makes it possible to use plastics as the plastic material which, in the case of non-automated production, could lead to health problems for the persons commissioned with such production.
  • the clean finish is further improved sert, and the introduction of the plastic filling is facilitated.
  • plastic filling according to the invention in particular a hot-melt adhesive, one achieves - due to the flowability and the good adhesion to different materials - in one operation both a longitudinally watertight termination of the cable and a torsion-proof connection of the contact sleeve to the outer conductor contact of the coaxial cable.
  • the plug-in sleeve 1 shown in FIG. 1 has a contact sleeve 5, which is connected via a crimp or screw connection to the outer conductor contact 6 of the cable 3, which is formed here in a spiral shape.
  • the connection between the outer conductor contact 6 and the contact sleeve 1 can also be formed by welding or soldering.
  • An inner conductor contact 4 is located centrally in the contact sleeve 5 arranged, which is designed in this embodiment as a sleeve.
  • the sleeve 4 has inwardly directed resilient contact blades for making contact with a connector.
  • the connection of the inner conductor to the inner conductor contact is preferably carried out by squeezing, welding or soldering.
  • outer conductor 6 and the insulation of the cable are first shortened to such an extent that inner conductor 2 protrudes about 3 cm from cable 3. Then the inner conductor contact 4 is plugged onto the protruding inner conductor 2, centered in a suitable device and fastened to the inner conductor 2. Then the contact sleeve 5 is pushed coaxially over the inner conductor contact 4. The rear end of the contact sleeve 5 is then screwed, welded, soldered or crimped to the outer conductor 6 of the cable 3.
  • the rear end of the contact sleeve between the outer conductor 6 and an outer insulation 9 of the cable 3 can be inserted so that the outer insulation 9 can reach up to the plug or the sleeve, and the contact point between the outer conductor 6 and the contact sleeve 5 is inaccessible from the outside.
  • the space between the inner conductor contact and the contact sleeve is filled with a plastic material.
  • a liquid two-component foam in particular a polyurethane foam, is preferably used for this purpose.
  • the injection of foamed thermoplastics with injection molds can also be provided. This foam fills the entire space between inner conductor contact 4, inner conductor 2, Contact sleeve 5 and the front end of the cable 3.
  • the plug-side front can be given a desired shape using a suitable molding tool. It should be pointed out that for the further centering of the inner conductor contact 4 with respect to the contact sleeve 5, basically no centering means, such as disks or the like, is required.
  • a cover plate 13 can be used, which both centers the inner conductor contact 4 while filling the space behind it and also offers simple possibilities for influencing the wave resistance, as will be described below.
  • cavities 10 in particular wedge-shaped cavities, are formed in the plastic material 7, which cavities can be formed simultaneously with the shaping of the end face of the plastic material.
  • the wave resistance can also or additionally be adjusted by selecting other types of plastic or the degree of foaming. The complete encasing and gluing of the plastic on the inner conductor contact provides a high level of vibration protection, which is particularly effective when used under difficult environmental conditions.
  • the cover disk 13 used has, for example, wedge-shaped projections 14, 15 directed into the plastic filling, which forms the desired cavities in the freshly filled plastic filling (see FIG. 4). .
  • the lugs 14 and 15 form the desired cavities in the plastic filling.
  • Another way of optimizing the characteristic impedance of the connector is to partially fill the space between the remote cable end and the upper edge of the inner conductor contact.
  • FIG. 3 also shows the cover disk 13 arranged at the front end of the inner conductor contact, which in this case in particular takes over the centering of the inner conductor contact.
  • the radio frequency cable used can have a cross-corrugated structure on its outside, e.g. a helical structure, which allows a high flexibility of the cable after the connector part.
  • Fig. 2 shows an embodiment of a contact plug, which is designed in a similar manner to the sleeve shown in Fig. 1.
  • a connector pin 8 is provided instead of a socket, which on the inner conductor 2 of the Ka bels 3 pushed on and attached to it.
  • the plug 8 is also surrounded by a contact sleeve 5.
  • a plastic material is filled between the connector 8 and the contact sleeve 5 in the same way as in the first embodiment, which can also have cutouts 10.
  • the cavity can also be filled by introducing preformed plastic elements, which preferably have a hot-melt adhesive coating, in order to enable a firm connection between the inner conductor contact, contact sleeve and plastic.
  • preformed plastic elements can also be formed in two parts as half shells, which are connected to one another by gluing during assembly.
  • the preformed elements can also be introduced in segments 11 or 12 in segments. This makes it easy to form cavities and create different properties in different connector areas. This ring segment formation can also take place in succession in several steps by foaming and spraying or by combining foaming / spraying and introducing preformed elements.
  • a hot-melt adhesive is preferably used as the plastic filling to be introduced. This has in particular a viscosity of 3000 - 10000 mPas at a processing temperature of 170 - 200 ° C and a softening point of 100 - 130 ° C.
  • the filling is introduced into the connector or the socket in particular on a multi-station Processing machine, which can be designed for example in the form of a rotary indexing table.
  • the machine comprises the three stations of casting, fitting the cover plate and cooling.
  • the potting is preferably carried out by an annular nozzle 16, which is provided with a central cover sleeve 17 for the inner conductor contact 8 or a central auxiliary plug for the inner conductor contact 4 (see FIG. 5).
  • the cover disk 13 is placed on the still adhesive adhesive in a further station of the machine. This results in a secure connection between the introduced plastic and the cover plate without additional fastening elements or without further operations.
  • the potting can be done through an injection nozzle. It is advantageous to first put on the cover plate and then to insert the injection nozzle into this opening for potting through an opening in the cover plate.
  • the component In the cooling station, the component is cooled to a temperature which is below the softening point of the hot-melt adhesive. The finished component can then be removed from the machine.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
EP89122635A 1988-12-13 1989-12-08 Elément de connexion pour un câble à haute fréquence et procédé pour sa fabrication Withdrawn EP0386333A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883842294 DE3842294A1 (de) 1988-12-13 1988-12-13 Anschlussstecker fuer ein hochfrequenzkabel
DE3842294 1988-12-13

Publications (1)

Publication Number Publication Date
EP0386333A1 true EP0386333A1 (fr) 1990-09-12

Family

ID=6369255

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89122635A Withdrawn EP0386333A1 (fr) 1988-12-13 1989-12-08 Elément de connexion pour un câble à haute fréquence et procédé pour sa fabrication

Country Status (2)

Country Link
EP (1) EP0386333A1 (fr)
DE (1) DE3842294A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2368732A (en) * 1999-04-15 2002-05-08 Yazaki Corp Insulating a crimp connection
US8978243B2 (en) 2011-05-25 2015-03-17 Nuovo Pignone S.P.A. Methods and systems for oil free low voltage conduits
CN105990733A (zh) * 2016-05-05 2016-10-05 南京普天天纪楼宇智能有限公司 一种有线电视系统单孔系统输出口的连接器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6471545B1 (en) * 1993-05-14 2002-10-29 The Whitaker Corporation Coaxial connector for coaxial cable having a corrugated outer conductor
DE10040762A1 (de) 2000-08-19 2002-03-07 Henkel Kgaa Formteile aus Dimerfettsäurefreie Polyamiden
DE102015101362A1 (de) * 2015-01-30 2016-08-04 Neutrik Ag Verfahren zur Herstellung einer Umhüllung eines Steckerteils

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2111947B2 (de) * 1971-03-12 1974-06-27 Kabel- Und Metallwerke Gutehoffnungshuette Ag, 3000 Hannover Verbindungselement für koaxiale Paare von Nachrichtenkabeln
DE3248729A1 (de) * 1982-12-30 1984-07-12 Minnesota Mining And Manufacturing Co., Saint Paul, Minn. Verfahren zum herstellen eines druckdichten kabel-endverschlusses
DE3503837A1 (de) * 1984-02-06 1985-08-14 Raychem Corp., Menlo Park, Calif. Vorrichtung zur trennung von in einem verbinder einzukapselnden draehten
DE3417811C1 (de) * 1984-05-14 1985-10-17 kabelmetal electro GmbH, 3000 Hannover Verfahren zum Anbringen eines Kupplungsteils am Ende einer elektrischen Leitung
DE3644962A1 (de) * 1986-11-29 1988-06-09 Stewing Nachrichtentechnik Kabelkupplung fuer koaxialkabel von breitbandkommunikationssystemen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3566007A (en) * 1969-06-02 1971-02-23 Amp Inc Corrugated coaxial cable
DE7604672U1 (de) * 1976-02-18 1976-06-24 Joh. Foerderer Soehne Kg Fabrik Fuer Radiotechnik, 7732 Niedereschach Abgeschirmter Koaxialstecker
DE7927003U1 (de) * 1979-09-22 1979-12-20 Kabel- Und Metallwerke Gutehoffnungshuette Ag, 3000 Hannover Koaxialstecker für eine Hochfrequenz-Leitung
DE8109532U1 (de) * 1981-03-31 1981-08-13 Adolf Strobel Antennenfabrik GmbH & Co KG, 5060 Bergisch Gladbach Verbinder für ein Koaxialkabel
DE3427361C1 (de) * 1984-07-25 1985-09-12 Wolfgang Dipl.-Ing. 2351 Trappenkamp Freitag Verbindung zwischen einem koaxialen Steckverbinder und einem Koaxialkabel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2111947B2 (de) * 1971-03-12 1974-06-27 Kabel- Und Metallwerke Gutehoffnungshuette Ag, 3000 Hannover Verbindungselement für koaxiale Paare von Nachrichtenkabeln
DE3248729A1 (de) * 1982-12-30 1984-07-12 Minnesota Mining And Manufacturing Co., Saint Paul, Minn. Verfahren zum herstellen eines druckdichten kabel-endverschlusses
DE3503837A1 (de) * 1984-02-06 1985-08-14 Raychem Corp., Menlo Park, Calif. Vorrichtung zur trennung von in einem verbinder einzukapselnden draehten
DE3417811C1 (de) * 1984-05-14 1985-10-17 kabelmetal electro GmbH, 3000 Hannover Verfahren zum Anbringen eines Kupplungsteils am Ende einer elektrischen Leitung
DE3644962A1 (de) * 1986-11-29 1988-06-09 Stewing Nachrichtentechnik Kabelkupplung fuer koaxialkabel von breitbandkommunikationssystemen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2368732A (en) * 1999-04-15 2002-05-08 Yazaki Corp Insulating a crimp connection
GB2368732B (en) * 1999-04-15 2002-09-25 Yazaki Corp Method of and structure for connecting electric wire and connecting terminal
US8978243B2 (en) 2011-05-25 2015-03-17 Nuovo Pignone S.P.A. Methods and systems for oil free low voltage conduits
CN105990733A (zh) * 2016-05-05 2016-10-05 南京普天天纪楼宇智能有限公司 一种有线电视系统单孔系统输出口的连接器

Also Published As

Publication number Publication date
DE3842294A1 (de) 1990-06-21

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