EP1570554A1

EP1570554A1 - Coaxial plug-and-socket connection

Info

Publication number: EP1570554A1
Application number: EP03767797A
Authority: EP
Inventors: Wolfgang B. THÖRNER; Fritz-J. Reich
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-12-13
Filing date: 2003-12-12
Publication date: 2005-09-07
Anticipated expiration: 2023-12-12
Also published as: CA2466414A1; EP1570554B1; ES2276122T3; JP3984260B2; DE10258689B3; WO2004055948A1; KR101008265B1; US7001220B2; CA2466414C; JP2005520316A; US20040253843A1; ATE341113T1; CN1692532A; AU2003292237A1; DE50305208D1; HK1084779A1; CN100367573C; KR20050074281A

Abstract

The invention relates to a socket ( 1 ) for a coaxial electrical plug-in connector as well as a pertaining plug. The socket ( 1 ) is comprised of an inner contact opening ( 2 ) with an inner contact element ( 3 ) arranged therein. The inner contact opening ( 2 ) is surrounded by an outer plug ( 4 ) being of a circular-cylindrical construction, said plug having an outer contact element. To improve the electrical properties of such a socket on transmission of audio and video signals between devices applied in consumer electronics, the present invention proposes an outer plug ( 4 ) to be made of an electrically insulating material, with the outer contact element being designed and built as a contact strip ( 6 ) in its contact area, with the curvature of said contact strip forming a circular-cylindrical helical curve on the outside of said outer plug ( 4 ).

Description

Coaxial connector

The invention relates to a socket for a coaxial electrical connector, with an inner contact opening, an inner contact element arranged therein and with a circular cylindrical outer plug surrounding the inner contact opening and having an outer contact element.

Furthermore, the invention relates to an electrical connector with a connector body to which an electrically insulating carrier element for an internal contact pin is fastened, and with an external contact element radially spaced from the internal contact pin with respect to the longitudinal axis of the connector.

Coaxial connectors of this type are known under the designation “cinch plug” or “RCA plug” and are used to produce a detachable cable connection between consumer electronics devices for the purpose of asymmetrical transmission of an audio signal or a video signal. Conventional RCA plugs usually have a hollow cylindrical outer contact arranged coaxially to the inner contact pin. This external contact generally consists of an annular metal strip which has slots running in the axial direction. By means of this slotted metal strip, the plug engages with the outer plug of an associated cinch or RCA socket, which is likewise of cylindrical design. In the case of such RCA plug connections, the resilient properties of the slotted metal strip of the external contact are used to produce a non-positive connection between the plug and the socket. From EP 1 049 206 A2 a socket for a coaxial electrical connector is known, which has a circular cylindrical outer contact element. A spring-elastic contact wire is attached to the inside of the external contact element, the course of which can be helical on the inside of the external contact element. The insertion and extraction force is determined by the contact wire when connecting the previously known socket with a corresponding plug.

A mounting socket for a coaxial electrical connector is also known from JP 08-306443 A. In this socket, the outer contact element is also of a circular cylindrical shape overall, with elevations being provided on the outside of the outer contact element, which form a circular ring on the outside of the outer contact element or in the manner of an interrupted helical line. These elevations are intended to improve the contact properties of the external contact element of the socket with the corresponding external contact element of an associated plug.

Another socket for receiving a coaxial connector is known from DE 199 08 469 A1. The plug to be inserted into the known socket has a circumferential groove, so that the plug locks in the socket.

Furthermore, DE 199 27 713 C1 discloses a multiple coupler for coaxial shielded sockets, which is intended for use in high-frequency technology. In the known coupler, a tensioning device is provided which serves to apply the clamping forces which bring about the contacting between resilient contact elements of the plug and the corresponding outer contact elements of the sockets to be contacted.

It is known that plug connections of the type described above have suboptimal properties with regard to the quality of the transmission of audio and video signals. The coaxial arrangement of the internal contact pin and the external contact essentially determines the impedance with standard plug connections. The main problem here is that the impedance of the connector in no way is adapted to the characteristic impedance of the cable used, so that there are reflections of the transmitted signal at the connection point. This problem becomes particularly relevant when digital audio or video signals are transmitted at a high data rate via the connector. In this case, bit errors and considerable data loss can occur due to non-linear signal distortions, so that the quality of the reproduction of the audio or video signals transmitted via the plug connection is greatly reduced. Unfortunately, linear distortions occur during the transmission of analog audio and video signals, which have a noticeable effect on the quality of the reproduction. Furthermore, it is known that eddy currents which are induced by the current flow via the internal contact pin can form in the circular-cylindrical metal strip of the external contact and interfere with the signal in a manner which is difficult to predict and thus impair the signal transmission.

An RCA plug is known from WO 00/70717, which makes it possible to establish a plug connection with a conventional RCA socket, the disadvantages outlined above being partially avoided.

Instead of the usual slotted metal strip, the known RCA plug has an axially aligned, pin-shaped outer contact element, which is fixed relative to the inner contact pin by means of a carrier element made of plastic material in a functional position required for the production of the electrical contact. To hold the plug on the associated socket, a collar section, which is also made of plastic material, is formed on the carrier element and engages in the circular-cylindrical external contact of the socket. The pin-shaped external contact is embedded in the plastic material of the collar section, so that the contact pin is pressed from the outside against the external contact of the socket when the plug is inserted into the socket. In the case of the known RCA plug, the pin-shaped external contact is cylindrical in its contact area or else spherical or ellipsoidal.

The impedance behavior of the RCA connector known from the cited document is clearly different from that of the conventional ones described above RCA plugs, which can be attributed in particular to the omission of the metal strips previously arranged coaxially to the internal contact pin as the ground contact. When producing an electrical plug connection with an RCA plug of this type, however, there is the problem that the negative properties described above still exist on the side of the socket into which the plug is inserted. In a conventional RCA socket, the inner contact opening, in which the inner contact pin of the plug inserted into the socket is located, is completely surrounded by the metallic body of the outer plug of the socket, which forms the outer contact element. The circular cylindrical metal jacket of the outer connector essentially determines the not inconsiderable capacity of the connector. In addition, the eddy currents described above can be induced in the metallic jacket of the external connector, which have a negative effect on the signal transmission.

Against this background, the object of the present invention is to provide a coaxial plug connection in which the disadvantages and problems described are avoided as far as possible. In particular, the invention is intended to provide a socket for a coaxial electrical plug connection which has an improved impedance behavior with regard to the signal transmission between devices of entertainment electronics and in which in particular the occurrence of eddy currents on the external contact element is avoided.

Starting from a socket of the type mentioned at the outset, this task is solved in that the outer plug is made of electrically insulating material, the outer contact element being designed in its contact area as a contact strip, the course of which forms a circular cylindrical helix on the outer surface of the outer plug.

According to the invention, the circular-cylindrical metal jacket customary in conventional RCA plugs is replaced by the outer plug consisting of electrically insulating material. To make the electrical contact with the external contact element of a plug, the helical contact strip of the socket according to the invention is used, which on the outside outer surface of the outer plug is arranged. In this way, the area of the outer contact element arranged coaxially to the inner contact opening of the socket is minimized, which leads to a significant reduction in the capacitance. Because the external contact element is of helical design, contact is possible anywhere on the outer circumference of the external connector, which ensures that the connector can be used together with conventional RCA connectors. However, the inventive design of the external contact element prevents eddy currents from being able to form in it since, unlike conventional RCA sockets, the external contact element does not form any continuous flat metal body surrounding the internal contact opening.

A particularly simple and inexpensive manufacturability of the bushing according to the invention results from the fact that it has a base body made of electrically insulating material, which is formed in one piece with the outer plug, the outer contact element being embedded in the base body as a metallic stamped and bent part. In this way, the socket can be easily manufactured either as a cable socket or as a socket for housing installation.

In the socket according to the invention, the contact strip of the external contact element is expediently inserted into a helical groove provided on the outside of the external connector. This ensures that the external contact element is securely fixed to the external connector, even if forces act on the contact strip of the external contact element in the axial direction when a connector is inserted into the socket.

It is furthermore advantageous for the simple and inexpensive manufacture of the socket according to the invention if the internal contact element is embedded in a carrier body made of electrically insulating material which can be inserted axially into a corresponding bore in the base body. The carrier body, which accordingly forms the inner life of the socket together with the inner contact element, can be inserted, for example, from behind into the base body of the socket without the outer plug arranged at the front end of the socket having to be removed. It is particularly useful if the pitch of the helical line corresponds essentially to the length of the outer plug in the socket according to the invention. Accordingly, the fact that contacting the external contact element on the outer surface of the external connector in the circumferential direction is possible at any point and that the total area of the contact strip consisting of electrically conductive material is minimized, ensures that the capacity of the socket is as small as possible and that the socket is also compatible with any commercially available RCA plug.

It is expedient to produce the inner contact element and / or the outer contact element from highly conductive electrolyte copper in the socket according to the invention. This results in a particularly low-noise connection and signal losses are minimized.

It is particularly expedient to color the electrically insulating material of the external connector, since a certain color coding for the assignment of the connections has become established in consumer electronics devices. For example, it is common to use the colors red and white for stereophonic audio signals for the right and left channels. The color yellow denotes a video connection.

Furthermore, it makes sense for the socket according to the invention if the outer plug and / or the base body consist of PTFE plastic material. This material, which is sold under the "Teflon" brand, is particularly temperature-resistant, which is advantageous if, for example, an electrical line is attached to the external contact element by soldering. The resultant heating of the external contact element could lead to the use of a less temperature-resistant plastic The outer plug or the base body of the socket may be damaged, and other temperature-resistant plastics, such as PEEK materials, are also suitable.

An advantageous development of the socket according to the invention consists in that the contact strip on the outer surface of the outer plug is divided into two or more helix sections, which are connected to a soldering tab via contact bars. This configuration is particularly favorable in terms of production technology, if the external contact element is manufactured as a metal stamped and bent part. The helical shape of the contact strip according to the invention is then in the form of the two or more helix sections, the technical advantages described above being achieved in the same way as in the case of a continuous helical shape of the contact strip.

In order to solve the problem underlying the invention, namely to create a coaxial plug connection that is improved compared to the prior art, it is necessary not only to provide a suitable socket, but also a suitable electrical connection plug, since the properties relevant for signal transmission the connection can be determined by the overall system consisting of plug and socket.

Starting from an electrical connector of the type described at the outset, the invention also achieves the stated object in that the external contact element of the connector is designed in its contact area as an electrically conductive contact tongue, with the connector being held radially spaced from the internal contact pin in order to hold the connector on a socket. electrically insulating clamping tongues are provided which, together with the contact tongue, are pressed inwards against the outer surface of a circular cylindrical outer plug of the socket by means of a clamping sleeve movably guided on the plug body.

The plug according to the invention is indeed suitable for being used to produce a coaxial plug connection with conventional RCA sockets. However, an improved plug connection in the sense of the invention occurs when the plug forms a coaxial plug connection system together with a socket according to the invention.

In the connector according to the invention, the electrically conductive contact tongue is used as the external contact element, so that the external contact element - unlike conventional RCA plugs - does not completely surround the internal contact pin. This in turn reduces the capacity of the plug connection and at the same time prevents eddy currents from occurring. To ensure that the plug is securely held on the socket, they are electrical insulating clamping tongues are 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, a particularly firm non-positive connection of the plug to the socket is thus ensured. In contrast to the plug known from WO 00/70717 mentioned above, in the plug according to the invention the external contact element is, as it were, actively pressed by the clamping sleeve against the outer surface of the external plug of the socket. In the case of the known plug, the contact pressure required to produce the electrical contact is exerted exclusively by the resilient plastic material in which the pin-shaped external contact of the plug is embedded. In the mechanical mounting of the plug according to the invention on the socket, the contact tongue and the clamping tongues, which are pressed by means of the clamping sleeve against the outer plug of the socket, interact. In the case of the known plug, the mechanical holding of the plug on the socket is based solely on the elasticity of the plastic material. The invention thus creates a coaxial connector system that is improved both electrically and mechanically compared to the prior art.

A particular advantage of the plug according to the invention is also that the area of the contact tongue can be selected such that the impedance of the plug connection is matched to the characteristic impedance of the cable used. The area of the contact tongue significantly influences the impedance of the connector. In particular, if the plug according to the invention forms a coaxial plug connection system together with a socket according to the invention, an optimized impedance behavior of the coaxial electrical plug connection can already be ensured during the manufacture of the plug by suitably specifying the area of the contact tongue.

A useful further development of the connector according to the invention results from the fact that the contact tongue has a linear elevation on its inside. In this case, the electrical contact with the external contact element of the socket is established at a precisely defined point via the linear elevation, which is particularly advantageous if the plug is used together with a socket according to the invention. In this case it overlaps the linear elevation of the contact tongue and the helical contact strip of the socket at least at one point on the outer surface of the outer plug of the socket. The contact area of the plug connection is defined precisely and reproducibly by the overlap area, and in particular the impedance of the plug connection does not depend on how far the plug is inserted into the socket.

In order to ensure reliable contacting of the helical contact strip of the socket according to the invention, it is expedient if the longitudinal axis of the contact tongue and / or the linear elevation are oriented obliquely with respect to the longitudinal axis of the connecting plug according to the invention on the part of the plug. In this case it is advantageous if the linear elevation of the plug and the contact strip of the socket overlap at an angle of essentially 90 °.

In the connecting plug according to the invention, the contact tongue and / or the clamping tongues expediently have a curvature which is adapted to the circular-cylindrical shape of the outer plug of the socket. On the one hand, this ensures 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. Furthermore, if the contact tongue and the clamping tongues have conically shaped end sections on their outer sides, this is advantageous for the pressure of the contact tongue and the clamping tongues against the outer surface of the outer plug of the socket. For this purpose, the clamping sleeve comes into contact with its inner surface in the region of the conically shaped end sections on the outer sides of the contact tongue and the clamping tongues and is clamped against the plug body in the axial direction. In order to avoid wear on the contact tongue and on the clamping tongues during this process, it is useful if the clamping sleeve consists of a base element and a ring element which is rotatably mounted on the base element, the inside of the ring element on the conically shaped end sections the contact tongue and the clamping tongues. An inexpensive and simple manufacture of the electrical connector according to the invention results if the clamping tongues are molded onto the connector body. In this case, the plug body and the clamping tongues can be made of anodized aluminum, for example. This material is electrically insulating and has a particularly hard surface, which is advantageous with regard to wear occurring on the clamping tongues. Alternatively, the clamping tongues can also be molded onto the carrier element for the internal contact pin. It is possible to fix the clamping tongues to the carrier element by means of a releasable snap-in or plug connection. Since the carrier element can consist of plastic material, it cannot be ruled out that the clamping tongues formed on the carrier element will break off if the plug is handled improperly. Accordingly, it makes sense if the clamping tongues can be replaced by means of the detachable snap-in or plug connection.

It is also advantageous if the external contact element of the plug can also be fixed on the carrier element by means of a releasable snap-in or plug connection. In this way, the external contact element is exchangeable, which can be used, for example, to use external contact elements with different sized contact tongues in order to vary the impedance of the plug connection and thus optimize the adaptation to the characteristic impedance of the cable used. It is also advantageous that the external contact element can be detached from the carrier element, for example in order to solder the external contact element to a cable. It is thereby avoided that the carrier element, which may be made of a low-melting plastic material, is destroyed by the heat transferred via the external contact element during soldering.

In the sense of a high mechanical stability of the connection between the plug and socket, it is expedient if the clamping tongues and the contact tongue are arranged on the outer circumference of the carrier element in the circumferential direction evenly spaced apart in the connecting plug according to the invention. In particular if the connector has two clamping tongues, together with the contact tongue, the connector is secured to the socket over three points. Through this three-point Bracket ensures that both the clamping tongues and the contact tongue are pressed evenly against the outer plug of the socket by the clamping sleeve. This results in a connection that is secure from a mechanical and electrical point of view.

According to a useful development of the invention, the connector has a snap-in connection, by means of which the electrically insulating carrier element is detachably fastened to the connector body. This results in advantages when installing the connector and when soldering a cable to the external contact element or to the internal contact pin.

Exemplary embodiments of the invention are explained below with reference to the figures. Show it:

Fig. 1: Perspective view of a bushing according to the invention;

Fig. 2: Side view of the socket shown in Figure 1;

3: cross-sectional representation of the bushing according to the invention;

Fig. 4: Side views of an alternative embodiment of the socket according to the invention;

5: external contact element produced as a stamped and bent part for the socket shown in FIG. 4;

6: first perspective view of an electrical connector according to the invention;

Fig. 7: second perspective view of the in

Figure 4 illustrated connector; Fig. 8: Side view of the plug with screwed-on clamping sleeve.

Figures 1, 2 and 3 show a socket intended for housing installation, which is designated as a whole with the reference number 1. The socket 1 has an inner contact opening 2 at the front end, into which the inner contact pin of a plug matching the socket 1 is inserted. An inner contact element 3 for establishing the electrical contact with the inner contact pin of the plug is arranged inside the inner contact opening 2. The inner contact opening 2 is surrounded by a circular cylindrical outer plug 4, which consists of an electrically insulating material, for example of PTFE plastic material. The outer plug 4 is formed in one piece with a base body 5 of the socket 1. As an external contact element, the socket 1 has a contact strip 6, the course of which forms a circular cylindrical helix on the outer surface of the external connector 4. The external contact element is embedded as a metal stamped and bent part 7 in the base body 5 of the socket 1. On the back of the socket 1, the stamped and bent part 7 is designed as a contact tab 8 to which a cable can be soldered. As can be seen in FIG. 3, the contact strip 6 is inserted into a helical groove provided on the outside of the outer plug 4. 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 in the base body 5 in the rear of the socket 1. On the back of the socket 1, the inner contact element 3 is again designed as a tab 10 for soldering a cable. The bushing 1 has a threaded section 11 on the outside. A corresponding nut can be screwed onto the thread, which, in cooperation with the socket 1, fixes the socket 1 to the base 5 of the socket 1 on the wall of a housing into which the socket 1 is installed.

FIG. 4 shows an alternative exemplary embodiment of the socket according to the invention, wherein it can be seen that the helical shape according to the invention in the illustrated exemplary embodiment comes about because the contact strip on the outer surface of the outer plug 4 is divided into two helix sections 6 ′ and 6 ″ 5 shows the shape of the as Stamped and bent part 7 made of copper external contact element of the socket shown in Figure 4. The helix sections 6 'and 6 "are connected via contact webs 6'" to the solder tab 8 for soldering a cable to the socket.

Figures 6, 7 and 8 show an electrical connector according to the invention, which is designated as a whole with the reference number 13. The plug 13 has a plug body 14 to which an electrically insulating carrier element 15 for an internal contact pin 16 is fastened. An external contact element 17, which is radially spaced with respect to the longitudinal axis of the plug 13 and is formed in its contact area as an electrically conductive contact tongue 18, is also attached to the carrier element 15. To hold the plug 13 on a corresponding socket, two electrically insulating clamping tongues 19 are provided which are radially spaced from the inner contact pin 16 and are integrally formed on the carrier element 15 and formed integrally therewith. Alternatively, there is the possibility that the clamping tongues 19 can be fixed on the carrier element 15 by means of a suitable releasable snap-in 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 which is 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, on which a clamping sleeve 22 consisting of a base element 20 and a ring element 21 engages. By means of the clamping sleeve 22 which is axially movably guided on the plug body 14, the electrically insulating clamping tongues 19 together with the contact tongue 18 for holding the plug 13 on a socket are pressed inwards 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 element 20, the inside of the ring element 21 coming into contact with the conical shaped end sections on the outside of the contact tongue 18 and the clamping tongues 19. To clamp the clamping sleeve 22 on the connector body 14 is a thread 23 attached to the connector body 14. To simplify the handling of the connector 13 when clamping the clamping sleeve 22 on the connector body 13, knurls 24 and 25 are used, which on the clamping sleeve 22 and on the Plug body 14 are attached. The contact tongue 18, as can be seen in FIG on its inside a line-shaped elevation 26, via which the electrical contact is made with the external contact of a socket. The linear elevation 26 is oriented obliquely with respect to the longitudinal axis of the connector 13. It can be seen from FIG. 7 that the external contact element 17 of the plug 13 can be fixed on the carrier element 15 by means of a releasable snap-in connection 27. The external contact element 17 has a contact tab 28, which is used to make contact with a cable.

Claims

claims

1. Socket (1) for a coaxial electrical plug connection, with an inner contact opening (2), an inner contact element (3) arranged therein and with a circular cylindrical outer plug (4) surrounding the inner contact opening (2) and having an outer contact element, characterized in that that the outer plug (4) consists of electrically insulating material, the outer contact element in its contact area being designed as a contact strip (6), the course of which forms a circular cylindrical helix on the outer surface of the outer plug (4).

2. Socket according to claim 1, characterized by a base body (5) made of electrically insulating material, which is formed in one piece with the outer plug (4), the outer contact element being embedded as a metal stamped and bent part (7) in the base body (5) ,

3. Socket according to one of claims 1 and 2, characterized in that the contact strip (6) of the external contact element is inserted into a helical groove provided on the outside of the external connector (4).

4. Socket according to claim 3, characterized in that 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 in the base body (5).

5. Socket according to one of claims 1 to 4, characterized in that the pitch of the helix substantially corresponds to the length of the outer plug (4).

6. Socket according to one of claims 1 to 5, characterized in that the inner contact element (3) and / or the outer contact element consist of highly conductive electrolyte copper.

7. Socket according to one of claims 1 to 6, characterized in that the electrically insulating material of the outer plug (4) is colored.

8. Socket according to one of claims 1 to 7, characterized in that the outer plug (4) and / or the base body (5) consist of PTFE plastic material.

9. Socket according to one of claims 1 to 8, characterized in that the contact strip (6) on the outer surface of the outer plug (4) is divided into two or more helix sections (6 ', 6 "), which via contact webs (6"' ) are connected to a soldering tab (8).

10. Electrical connector (13) with a connector body (14), on which an electrically insulating carrier element (15) for an internal contact pin (16) is attached, and with one of the internal contact pin (16) with respect to the longitudinal axis of the connector (13 ) radially spaced outer contact element (17), characterized in that the outer contact element (17) is designed in its contact area as an electrically conductive contact tongue (18), with radially spaced from the inner contact pin (16) for holding the plug (13) on a socket, Electrically insulating clamping tongues (19) are provided, which together with the contact tongue (18) are pressed inwards against the outer surface of a circular cylindrical outer connector of the socket by means of a clamping sleeve (22) which is axially movably guided on the connector body (14).

11. Electrical connector according to claim 10, characterized in that the contact tongue (18) has a linear elevation (26) on its inside.

12. Electrical connector according to one of claims 10 and 11, characterized in that the longitudinal axis of the contact tongue (18) and / or the linear elevation (26) with respect to the longitudinal axis of the connector (13) are aligned obliquely.

13. Electrical connector according to one of claims 10 to 12, characterized in that the contact tongue (18) and / or the clamping tongues (19) have a curvature adapted to the circular cylindrical shape of the outer plug of the socket.

14. Electrical connector according to one of claims 10 to 13, characterized in that the contact tongue (18) and the clamping tongues (19) have conically shaped end sections on their outer sides.

15. Electrical connector according to claim 14, characterized in that the clamping sleeve (22) consists of a base element (20) and a ring element (21) which is rotatably mounted on the base element (20), the ring element (21) with its Inside comes in the area of the conically shaped end sections on the outside of the contact tongue (18) and the clamping tongues (19).

16. Electrical connector according to one of claims 10 to 15, characterized in that the clamping tongues (19) are integrally formed on the plug body (14).

17. Electrical connector according to claim 16, characterized in that the plug body (14) and the clamping tongues (19) consist of anodized aluminum.

18. Electrical connector according to one of claims 10 to 15, characterized in that the clamping tongues (19) are integrally formed on the carrier element (15).

19. Electrical connector according to one of claims 10 to 15, characterized in that the clamping tongues (19) can be fixed by means of a releasable snap-in or plug connection on the carrier element (15).

20. Electrical connector according to one of claims 10 to 19, characterized in that the external contact element (17) of the plug (13) can be fixed on the carrier element (15) by means of a releasable snap-in or plug connection (27).

21. Electrical connector according to one of claims 10 to 20, characterized in that the clamping tongues (19) and the contact tongue (18) on the outer circumference of the carrier element (15) are arranged evenly spaced apart from one another in the circumferential direction.

22. Electrical connector according to claim 21, characterized in that the connector (13) has two clamping tongues (19).

23. Electrical connector according to one of claims 10 to 22, characterized in that the electrically insulating carrier element (15) on the connector body (14) is releasably attached by means of a latching connection.

24. Coaxial connector system with a socket (1) according to one of claims 1 to 9 and a connector (13) according to one of claims 10 to 23.