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EP1570554B1 - Koaxiale steckverbindung - Google Patents

Koaxiale steckverbindung Download PDF

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Publication number
EP1570554B1
EP1570554B1 EP03767797A EP03767797A EP1570554B1 EP 1570554 B1 EP1570554 B1 EP 1570554B1 EP 03767797 A EP03767797 A EP 03767797A EP 03767797 A EP03767797 A EP 03767797A EP 1570554 B1 EP1570554 B1 EP 1570554B1
Authority
EP
European Patent Office
Prior art keywords
plug
contact
socket
electrical connection
contact element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03767797A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1570554A1 (de
Inventor
Wolfgang B. THÖRNER
Fritz-J. Reich
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1570554A1 publication Critical patent/EP1570554A1/de
Application granted granted Critical
Publication of EP1570554B1 publication Critical patent/EP1570554B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • H01R24/42—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 comprising impedance matching means or electrical components, e.g. filters or switches
    • H01R24/44—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 comprising impedance matching means or electrical components, e.g. filters or switches comprising impedance matching means
    • 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
    • H01R2103/00—Two poles

Definitions

  • the invention relates to a socket for a coaxial electrical plug-in connection, having an inner contact opening, an inner contact element arranged therein and having a circular-cylindrical outer plug of electrically insulating material surrounding the inner contact opening and having an outer contact element.
  • the invention relates to an electrical connector with a plug body to which an electrically insulating support member is fixed for an inner contact pin, and with a radially spaced from the inner contact pin with respect to the longitudinal axis of the plug outer contact element.
  • Such coaxial connectors are known as "RCA plugs” or “RCA plugs” known and are used to make a detachable cable connection between consumer electronics devices for the purpose of asymmetric transmission of an audio signal or a video signal.
  • Conventional RCA plugs usually have a hollow cylindrical, coaxial with the inner contact pin arranged external contact.
  • This external contact is usually made of an annular metal strip, which has slits extending in the axial direction.
  • This slotted metal strip of the plug engages the likewise circular cylindrical outer plug of an associated RCA or RCA socket.
  • the resilient properties of the slotted metal strip of the external contact are used in such RCA connectors.
  • a socket for a coaxial electrical plug connection which has a circular cylindrical outer contact element.
  • a resilient contact wire is attached, the course of which may be helical on the inside of the outer contact element.
  • a female connector for a coaxial electrical connector is further known from JP 08-306443 A.
  • the outer contact element is also formed as a whole circular cylindrical, wherein elevations are provided on the outer side of the outer contact element, which extend on the outside of the outer contact element annular or in the manner of an interrupted helix. These projections are intended to improve the contact properties of the outer contact element of the socket with the corresponding outer contact element of an associated plug.
  • Another socket for receiving a coaxial connector is known from DE 199 08 469 A1.
  • the plugged into the previously known connector has a circumferential groove, so that it comes to a locking of the plug in the socket.
  • connectors of the type described above have sub-optimal characteristics with regard to the quality of the transmission of audio and video signals.
  • the coaxial arrangement of inner contact pin and outer contact significantly determines the impedance in conventional connectors. It is especially problematic that the impedance of the plug is in no way adapted to the characteristic impedance of the cable used, so that it comes to reflections of the transmitted signal at the junction. This problem becomes particularly relevant when digital audio or video signals with a high data rate are transmitted via the plug connection. In this case, due to non-linear signal distortion, bit errors and significant data loss may occur, so that the quality of reproduction of the audio or video signals transmitted through the connector is greatly reduced.
  • US 4,300,338 describes a method of manufacturing a coaxial cable.
  • the shield of the prior art cable consists of strip-shaped conductor elements of different width, which are helically wound in opposite directions around the inner conductor and the dielectric. This creates a coaxial cable with incomplete shielding. This results in a stray field surrounding the cable whose parameters are dictated by the geometry of the incomplete shielding.
  • a socket for a coaxial connector is previously known.
  • This socket has a circular-cylindrical, sleeve-shaped outer plug, which consists of electrically insulating material. Inside the outer plug, a contact element with a resilient, electrically conductive wire is arranged.
  • the prior art RCA plug has, instead of the usual slotted metal strip on an axially aligned, pin-shaped outer contact element, which is set relative to the inner contact pin by means of a support element made of plastic material in a required for the production of electrical contact functional position.
  • a support element made of plastic material in a required for the production of electrical contact functional position.
  • a likewise made of plastic existing collar portion is integrally formed on the support member, which engages the circular cylindrical outer contact of the socket.
  • the pin-shaped outer contact is embedded in the plastic material of the collar portion, so that the contact pin is pressed during insertion of the plug into the socket from the outside against the outer contact of the socket.
  • the pin-shaped outer contact is formed in the prior art RCA connector in its contact area cylindrical or spherical or ellipsoidal.
  • the impedance behavior of the mentioned RCA connector is significantly different than in the conventional RCA plugs described above, which is due in particular to the waiver of the usual coaxial with the inner pin arranged metal strip as ground contact.
  • the inner contact opening in which the inner contact pin of the plug inserted into the socket is, in a conventional RCA socket namely completely surrounded by the outer contact element forming metallic body of the outer plug of the socket.
  • the circular cylindrical metal shell of the outer connector significantly determines the not inconsiderable capacity of the connector.
  • the above-described Eddy currents are induced, which have a negative effect on the signal transmission.
  • the present invention has for its object to provide a coaxial connector, in which the disadvantages and problems described are avoided as much as possible.
  • a socket for a coaxial electrical connector which has an improved in terms of signal transmission between devices of consumer electronics impedance behavior and in which in particular the occurrence of eddy currents is avoided on the outer contact element.
  • the usual conventional RCA plugs circular cylindrical metal jacket is replaced by the existing of electrically insulating material male connector.
  • the helical contact strip of the socket according to the invention which serves on the outer surface of the outer plug is arranged.
  • the outer contact element is helical, a contacting is possible anywhere on the outer circumference of the outer plug, thereby ensuring that the socket can be used together with conventional RCA plugs.
  • the inventive design of the outer contact element prevents eddy currents can form in this, since the outer contact element - unlike conventional RCA sockets - does not form the inner contact opening surrounding contiguous sheet metal body.
  • a particularly simple and cost-manufacturability of the socket according to the invention results from the fact that this has a consisting of electrically insulating material body, which is integrally formed with the outer connector, wherein the outer contact element is embedded as a metallic stamped and bent part in the body.
  • the socket can be easily manufactured either as a cable jack or socket for housing installation.
  • the contact strip of the outer contact element is inserted into a mounted on the outside of the outer plug helical groove in the socket according to the invention. In this way, it is ensured that the outer contact element is securely fixed to the outer plug, even if forces act on the contact strip of the outer contact element when inserting a plug into the socket in the axial direction.
  • the inner contact element is embedded in a carrier body of electrically insulating material which is axially insertable into a corresponding bore of the base body.
  • the carrier body which thus forms together with the inner contact element, the inner life of the socket, for example, can be inserted from behind into the main body of the socket, without the arranged at the front end of the socket outer connector must be dismantled.
  • the pitch of the helix corresponds substantially to the length of the outer plug. Accordingly, by making it possible to contact the outer contact element on the outer surface of the outer plug in the circumferential direction at any point and to minimize the total area of the contact strip made of electrically conductive material, it is ensured that the capacitance of the bushing is as low as possible and that the jack is also compatible with any commercially available RCA plug.
  • the contact strip is divided on the outer surface of the outer plug into two or more helix sections, which are connected via contact webs with a solder tab.
  • This embodiment is particularly favorable in terms of production engineering, when the external contact element is produced as a metallic stamped and bent part.
  • the inventive helical shape of the contact strip is then in the form of two or more helix sections, wherein the technical advantages described above are achieved as well as in the case of a continuous helical shape of the contact strip.
  • the invention solves said task thus further characterized in that the outer contact element of the plug is formed in its contact region as an electrically conductive contact tongue, wherein for holding the plug to a socket radially spaced from the inner contact pin, electrically insulating Clamping tongues are provided, which are pressed together with the contact tongue by means of a movably guided on the plug body clamping sleeve inwardly against the outer surface of a circular cylindrical outer plug of the socket.
  • the plug according to the invention is suitable to be used for the production of a coaxial connector with conventional RCA jacks.
  • improved connector comes off when the plug forms a coaxial connector system together with a socket according to the invention.
  • the electrically conductive contact tongue is used as the outer contact element, so that the outer contact element - unlike conventional RCA plugs - does not completely surround the inner contact pin. This in turn reduces the capacity of the connector while preventing the occurrence of eddy currents. So that a secure mounting of the plug is ensured on the socket, are electrically insulating clamping tongues provided, which are pressed by means of the clamping sleeve against the outer surface of the outer plug of the socket. According to the invention thus a particularly strong non-positive connection of the plug is ensured with the socket.
  • the outer contact element is pressed by the clamping sleeve effectively active against the outer surface of the outer plug of the socket.
  • the contact pressure required for the production of the electrical contact is applied exclusively by the resilient plastic material, in which the pin-shaped outer contact of the plug is embedded.
  • the contact tongue and the clamping tongues which are pressed by means of the clamping sleeve against the outer plug of the socket, together.
  • the mechanical support of the plug on the socket in turn is based solely on the spring elasticity of the plastic material. The invention thus provides an improved both in electrical and in mechanical terms over the prior art coaxial connector system.
  • a particular advantage of the connector according to the invention further consists in that the surface of the contact tongue can be selected such that the impedance of the connector is adapted to the characteristic impedance of the cable used.
  • the area of the contact tongue namely significantly affects the impedance of the plug.
  • the contact tongue has a line-shaped elevation on its inside.
  • the electrical contact with the outer contact element of the socket is made at a precisely defined point on the linear survey, which is particularly advantageous when the plug is used together with a socket according to the invention.
  • the longitudinal axis of the contact tongue and / or the linear elevation are aligned obliquely with respect to the longitudinal axis of the connector according to the invention on the side of the plug.
  • the linear projection of the plug and the contact strip of the socket overlap at an angle of substantially 90 °.
  • the contact tongue and / or the clamping tongues have a curvature adapted to the circular-cylindrical shape of the outer plug of the socket. This ensures on the one hand a flat contact of the clamping tongues on the outer plug of the socket, which is advantageous for the mechanical stability of the connection between the plug and socket. Further, if the contact tongue and the clamping tongues have on their outer sides conically shaped end portions, this is advantageous for the contact pressure of the contact tongue and the clamping tongues against the outer surface of the outer plug of the socket.
  • the clamping sleeve comes with its inner surface in the region of the conically shaped end portions on the outer sides of the contact tongue and the clamping tongues to the plant and is clamped in the axial direction against the plug body.
  • the clamping sleeve consists of a base member and a ring member which is rotatably mounted on the base member, wherein the ring member with its inside at the conically shaped end portions the contact tongue and the clamping tongues attacks.
  • the clamping tongues are formed on the plug body.
  • the plug body and the clamping tongues may for example consist of anodized aluminum.
  • This material is electrically insulating and has a particularly hard surface, which is advantageous in terms of occurring at the clamping tongues wear.
  • the clamping tongues may also be formed on the carrier element for the inner contact pin. It is possible to fix the clamping tongues by means of a releasable latching or plug connection to the support element. Since the carrier element can be made of plastic material, it is not excluded that the molded on the support member clamping tongues break off inappropriate handling of the plug. It is accordingly useful if the terminal tongues can be replaced by means of the releasable latching or plug connection.
  • the outer contact element of the plug by means of a releasable latching or plug connection to the support member can be fixed.
  • the outer contact element is replaceable, which can be exploited, for example, to use outer contact elements with different large contact tongues to vary the impedance of the connector and so to optimize the adaptation to the characteristic impedance of the cable used.
  • the outer contact element can be detached from the support element, for example, to solder the outer contact element with a cable. It is thereby avoided that the possibly made of a low-melting plastic material carrier element is destroyed by the heat transferred during soldering via the external contact element.
  • the clamping tongues and the contact tongue on the outer circumference of the support element in the circumferential direction uniformly spaced apart in the connector according to the invention.
  • the connector has two clamping tongues
  • together with the contact tongue over a three-point location of the connector is ensured at the socket.
  • Through this three-point bracket It is ensured that both the two clamping tongues and the contact tongue are pressed by the clamping sleeve uniformly against the outer plug of the socket. It thus results in a secure mechanical and electrical connection.
  • the connector has a latching connection, by means of which the electrically insulating support member is releasably secured to the plug body.
  • FIGS 1, 2 and 3 show a specific intended for the housing socket, which is designated as a whole by the reference numeral 1.
  • the socket 1 has at the front end to an inner contact opening 2, in which the inner contact pin of a plug to the socket 1 is inserted. Inside the inner contact opening 2, an inner contact element 3 for producing the electrical contact with the inner contact pin of the plug is arranged.
  • the inner contact opening 2 is surrounded by a circular cylindrical outer plug 4, which consists of electrically insulating material, for example of PTFE plastic material.
  • the outer plug 4 is integrally formed with a main body 5 of the bush 1.
  • the socket 1 has a contact strip 6, the course of which forms a circular cylindrical helix on the outer surface of the outer plug 4.
  • the outer contact element is embedded as a metallic stamped bent part 7 in the main body 5 of the socket 1.
  • the stamped and bent part 7 is formed as a contact tab 8, to which a cable can be soldered.
  • the contact strip 6 is, as can be seen in Figure 3, inserted into a mounted on the outside of the outer plug 4 helical groove.
  • the inner contact element 3 is embedded in a carrier body 9 made of electrically insulating material, which can be inserted axially into a corresponding bore of the base body 5 mounted in the rear side of the bushing 1.
  • the inner contact element 3 is again formed as a tab 10 for soldering a cable.
  • the bush 1 has a threaded portion 11.
  • a corresponding nut can be screwed, which the sleeve 1 cooperating with an integrally formed on the base body 5 of the sleeve 1 collar 12 on the wall of a housing, in which the socket 1 is installed, fixed.
  • FIG. 4 shows an alternative embodiment of the bushing according to the invention, wherein it can be seen that the helical shape according to the invention is achieved in the illustrated embodiment by dividing the contact strip on the outer surface of the outer plug 4 into two helix sections 6 'and 6 " 5 shows the shape of the as Stamped bent part 7 made of copper outer contact element of the socket shown in Figure 4.
  • FIGS 6, 7 and 8 show an electrical connector according to the invention, which is designated as a whole by the reference numeral 13.
  • the plug 13 has a plug body 14, to which an electrically insulating carrier element 15 is fastened for an inner contact pin 16.
  • an electrically insulating carrier element 15 is fastened for an inner contact pin 16.
  • electrically insulating clamping tongues 19 are provided, which are integrally formed on the support member 15 and integrally formed therewith.
  • the clamping tongues 19 can be fixed to the carrier element 15 by means of a suitable releasable latching or plug connection. It can be seen from FIGS. 6 and 7 that the contact tongue 18 and the clamping tongues 19 have a curvature adapted to the circular-cylindrical shape of the outer plug of a corresponding socket.
  • the contact tongue 18 and the clamping tongues 19 furthermore have conically shaped end sections on their outer sides, against which a clamping sleeve 22 consisting of a base element 20 and a ring element 21 engages.
  • the plug body 14 By means of the plug body 14 axially movably guided clamping sleeve 22, the electrically insulating clamping tongues 19 are pressed together with the contact tongue 18 for holding the plug 13 to a socket inwardly against the outer surface of the outer plug of the socket.
  • the ring element 21 of the clamping sleeve 22 is rotatably mounted on the base member 20, wherein the ring member 21 comes with its inside in the region of the conically shaped end portions on the outer sides of the contact tongue 18 and the clamping tongues 19 to the plant.
  • To clamp the clamping sleeve 22 to the plug body 14 is attached to the plug body 14 thread 23.
  • the contact tongue 18 has, as shown in the figure 6, on on its inside a line-shaped elevation 26, via which the electrical contact with the external contact of a socket is produced.
  • the line-shaped elevation 26 is aligned obliquely with respect to the longitudinal axis of the connector plug 13. It can be seen from FIG. 7 that the outer contact element 17 of the plug 13 can be fixed to the carrier element 15 by means of a releasable latching connection 27.
  • the outer contact element 17 has a contact tab 28, which serves for contacting with a cable.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
EP03767797A 2002-12-13 2003-12-12 Koaxiale steckverbindung Expired - Lifetime EP1570554B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10258689 2002-12-13
DE10258689A DE10258689B3 (de) 2002-12-13 2002-12-13 Koaxiale Steckverbindung
PCT/EP2003/014160 WO2004055948A1 (de) 2002-12-13 2003-12-12 Koaxiale steckverbindung

Publications (2)

Publication Number Publication Date
EP1570554A1 EP1570554A1 (de) 2005-09-07
EP1570554B1 true EP1570554B1 (de) 2006-09-27

Family

ID=32477675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03767797A Expired - Lifetime EP1570554B1 (de) 2002-12-13 2003-12-12 Koaxiale steckverbindung

Country Status (12)

Country Link
US (1) US7001220B2 (zh)
EP (1) EP1570554B1 (zh)
JP (1) JP3984260B2 (zh)
KR (1) KR101008265B1 (zh)
CN (1) CN100367573C (zh)
AT (1) ATE341113T1 (zh)
AU (1) AU2003292237A1 (zh)
CA (1) CA2466414C (zh)
DE (2) DE10258689B3 (zh)
ES (1) ES2276122T3 (zh)
HK (1) HK1084779A1 (zh)
WO (1) WO2004055948A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008007866A1 (de) * 2008-02-06 2009-08-13 THÖRNER, Wolfgang B. Bananenstecker

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US7736193B2 (en) 2004-09-10 2010-06-15 Wolfgang Edeler Audio and video plug and socket having integrated video contact
USD594319S1 (en) * 2005-09-16 2009-06-16 Thoerner Wolfgang B Electric cable clamp
US7462068B2 (en) * 2007-04-03 2008-12-09 John Mezzalingua Associates, Inc. Sure-grip RCA-type connector and method of use thereof
WO2010009610A1 (zh) * 2008-07-21 2010-01-28 Uen Weitang 扬声器连接座的固定件
US7833067B1 (en) * 2009-10-18 2010-11-16 Robert F Villa Audio-video signal plug
CN103427212B (zh) * 2012-05-22 2015-11-25 富士康(昆山)电脑接插件有限公司 线缆连接器
US9231354B1 (en) * 2014-09-03 2016-01-05 Advanced Testing Technologies, Inc. Interconnections for axial cables
KR101709293B1 (ko) * 2015-03-13 2017-03-09 주식회사 콘텍 동축 커넥터
JP6983109B2 (ja) * 2017-12-21 2021-12-17 モレックス エルエルシー コネクタ及びコネクタアセンブリ
US10608352B2 (en) 2017-12-21 2020-03-31 Molex, Llc Connector and connector assembly
DE102019205050A1 (de) * 2019-04-09 2020-10-15 Audi Ag Buchsenvorrichtung zum berührsicheren elektrischen Kontaktieren einer korrespondierenden Steckervorrichtung, Steckervorrichtung und Batteriemodul für eine Hochvoltbatterie
US11394151B2 (en) 2020-10-01 2022-07-19 Aptiv Technologies Limited Primary locks with terminal serviceablity features for mixed connection coaxial cables
DE102021100807B3 (de) * 2021-01-15 2022-02-03 Te Connectivity Germany Gmbh Kontakteinrichtung, insbesondere Koaxial-Kontakteinrichtung

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Also Published As

Publication number Publication date
DE50305208D1 (de) 2006-11-09
DE10258689B3 (de) 2004-07-08
HK1084779A1 (en) 2006-08-04
CN1692532A (zh) 2005-11-02
JP3984260B2 (ja) 2007-10-03
ATE341113T1 (de) 2006-10-15
US20040253843A1 (en) 2004-12-16
WO2004055948A1 (de) 2004-07-01
KR101008265B1 (ko) 2011-01-13
EP1570554A1 (de) 2005-09-07
CN100367573C (zh) 2008-02-06
JP2005520316A (ja) 2005-07-07
KR20050074281A (ko) 2005-07-18
CA2466414C (en) 2011-09-13
US7001220B2 (en) 2006-02-21
CA2466414A1 (en) 2004-06-13
ES2276122T3 (es) 2007-06-16
AU2003292237A1 (en) 2004-07-09

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