Contact arrangement for a coaxial plug and multiple contact arrangement

Abstract

The invention relates to a contact arrangement for a coaxial plug (1) comprising an inner conductor contact (5) and an insulation body (7) with dielectric function which encloses the inner conductor contact (5). Prior art solutions are difficult to operate, bear the risk of jamming an inner conductor when inserting it into an insertion opening (25) and do not allow easy measurement of the correct position of the inner conductor contact (5). Known solutions are improved by the present invention in that the inner conductor contact (5) has an insertion opening (25) for inserting a mating contact into the inner conductor contact (5) and that the insertion opening (25) has insertion bevels (27) formed by the inner conductor contact (5) and the insulation body (7). A multiple contact arrangement (2) comprises a first contact arrangement (1, 1a), a second contact arrangement (1, 1b) and a common insulation body (7a). [FIGURE 1]

Description

The invention relates to a contact arrangement for a coaxial plug comprising an inner conductorcontact and an insulation body with dielectric function which encloses the inner conductor contact.When mating two contact arrangements, such as two coaxial connectors, for example a plug witha socket or a coupling, incorrect po sitioning of an internal central contact can prevent mating anddeform the central contact to such an extent that it can no longer be used. In series production,contact arrangements for a coaxial plug that would lead to faulty mating are sorted out. This canlead to increased manufacturing costs.Thus, it is the object of the present invention to provide a contact arrangement for a coaxial plugthat reduces the susceptibility to error when mating known contact arrangements.The invention solves this problem for the above-mentioned contact arrangement for a coaxial plugin that the inner conductor contact has an insertion opening for inserting a mating contact into theinner conductor contact, and the insertion opening has insertion bevels formed by the inner conductorcontact and the insulation body.This has the advantage that the risk of faulty mating can be reduced by means of the insertionbevels, since the insertion opening allows a greater variance in the positioning of the mating contact.Thus, the manufacturing and positional tolerances imposed on the inner conductor contactcan also be reduced, which in turn reduces the scrap of contact assemblies that exceed thesetolerances and thus have to be sorted out. This can reduce the manufacturing costs of the contactarrangement. Because the inner conductor contact also forms an insertion bevel, it can be extendedin the direction of the insertion opening, which improves the RF properties of the contactarrangement.The invention further relates to a multiple contact arrangement comprising a first contact arrangementaccording to the invention and a second contact arrangement according to the invention,wherein the insulation body of the first contact arrangement and the insulation body of the secondcontact arrangement form a common insulation body.Both the first contact arrangement and the second contact arrangement have the advantage thatthe risk of faulty mating can be reduced by means of the insertion bevels.The contact arrangement for a coaxial plug according to the invention and the multiple contactarrangement according to the invention can be improved by further optional features describedbelow. These additional features can be combined with each other as desired and individual featurescan be omitted.The insulation body can consist of a dielectric, i.e., an electrically weak or non-conductive substance.The contact arrangement for a coaxial plug may be, in particular, a coaxial connector.The coaxial connector can preferably be a coaxial socket or a coaxial coupling. These have afemale inner conductor contact which is configured to receive a pin-shaped mating contact. Apositioning of the parts of the coaxial connector with respect to each other refers to an assemblystate of the coaxial connector, unless explicitly stated otherwise, wherein in the assembly state,for example, the insulation body encloses the inner conductor contact. In one embodiment of themultiple contact arrangement, the inner conductor contact of the first contact arrangement andthe inner conductor contact of the second contact arrangement may be arranged symmetricallyin the common insulation body and / or parallel to each other.In one embodiment of the multiple contact arrangement, the inner conductor contact may be afirst inner conductor contact and the multiple contact arrangement may comprise a second innerconductor contact. Both inner conductor contacts, the first inner conductor contact and the secondinner conductor contact, may be identically formed.In the multiple contact arrangement, the insulation body of the first contact arrangement and theinsulation body of the second contact arrangement are monolithically, i.e. integrally, connected orformed with each other.In particular, such a multiple contact arrangement can be a twinaxial connector. This has twoshielded inner conductors or inner conductor contacts. Both inner conductor contacts have aninsertion opening for inserting a mating contact into the inner conductor contact, whereby theinsertion openings of the two inner conductor contacts each have insertion bevels which areformed by the respective inner conductor contact and the insulation body.The first inner conductor contact and the second inner conductor contact can be arranged symmetricallyin the common insulation body and / or parallel to each other.In further embodiments, the multiple contact arrangement can have more than two contact arrangementsaccording to the invention and thus also more than two inner conductor contacts, forexample three, four, five or more inner conductor contacts. These may all be identically shaped,or they may all differ, for example in the diameter of the mating contacts to be accommodated.A number of receiving openings (also: recesses, pockets or through-holes) provided in the insulationbody can thus correspond to the number of contact arrangements, or the number of innerconductor contacts of the multiple contact arrangement. Preferably, the receiving openings extendparallel to the insertion direction, and parallel to each other. Further preferably, the receivingopenings are arranged equidistantly from each other, so that the inner conductor contacts canalso be inserted or inserted equidistantly from each other in the insulation body.The multiple contact arrangement may be a twinaxial connector and, in particular, a twinaxialmale plug or a twinaxial female socket.A twinaxial connector can be a differential connector designed to transmit balanced signals via apair of inner conductors. This has the advantage of a larger possible data transmission rate andthe addressability of several connected terminals per connection. Such connectors can be used,for example, for data transmission via an SA-TA3 or DisplayPort interface.The first and second inner contacts can be arranged symmetrically, preferably mirror-symmetrically,in the coaxial connector, in particular in a plug face of the coaxial connector.The multiple contact arrangement may have a circular plug face. In a further embodiment, theplug face of the multiple contact arrangement may have a shape composed of two semicirclesand a rectangle arranged between the semicircles. Here, the diameter of the semicircles corre20sponds to the side length of the sides of the rectangle that contact the semicircles.In the following description, optional features of a contact arrangement for a coaxial plug with aninner conductor contact are described. The explanations of the inner conductor contact and itscomponents are transferable to a second inner conductor contact of the second contact arrangement.The contact arrangement for a coaxial plug is referred to in the following as a coaxial connector.The coaxial connector can be improved by having the insertion bevels together form an insertionfunnel. Such an insertion funnel can reduce the manufacturing and position tolerances placed onthe inner conductor contact and facilitates the insertion of the mating contact into the insertionopening.Thus, each insertion bevel of the inner conductor contact preferably adjoins an insertion bevel ofthe insulation body. The insertion bevels can thus be arranged alternately and form the insertionfunnel. This has the advantage that no tolerance chains are formed for the inner conductor contactor the insulation body, but instead the individual tolerances of the inner conductor contact and theinsulation body are considered. In this case, the achievable susceptibility to error in the case ofindividual tolerances can be lower than in the case of a tolerance chain.The circumferential direction can preferably run around an axis of the coaxial connector. Preferably,the axis of the coaxial connector is arranged or oriented parallel to an extension directionthereof.In a multiple contact arrangement, the circumferential direction can run around an axis of the firstor the second inner conductor contact. A respective circumferential direction can be defined foreach inner conductor contact.In a further preferred configuration of the coaxial connector, two opposing insertion bevels of theinner conductor contact and two opposing insertion bevels of the insulation body can form theinsertion funnel. Such an arrangement of insertion bevels opposite each other with respect to anaxis of the coaxial connector, in particular diametrically opposite each other, has the advantagethat an arrangement of the insertion bevels of the inner conductor contact and the insulation bodycan be realized in a simple manner. The diametrically opposed insertion bevels can each berotated by 90° to one another about the axis of the coaxial connector.Particularly preferably, the inner conductor contact and the insulation body may extend along alongitudinal direction, wherein said longitudinal direction corresponds to the axis of the coaxialconnector or the mating direction, respectively, wherein the inner conductor contact may extendin the longitudinal direction to a plug opening-side end of the insulation body.In a multiple contact arrangement, the inner conductor contacts and the common insulation bodycan each extend along the longitudinal direction, which is oriented parallel to the axis of the coaxialconnector and parallel to the mating direction, respectively.The plug opening-side end of the insulation body is the end that points in the same direction asthe insertion opening of the inner conductor contact.Such an arrangement of the inner conductor contact in relation to the insulation body has severaladvantages.On the one hand, this positioning improves the high-frequency properties of the coaxial connector,since the inner conductor contact ends in the mating direction with the insulation body, preferablyflush. Thus, it can be prevented that a contact element to be inserted into the insertion openingsruns free-standing between the plug opening-side end of the insulation body and the plug opening-side end of the inner conductor contact, which would deteriorate the high frequency properties.Furthermore, a positioning distance of the inner conductor contact to a contact element tobe inserted into the insertion opening can be optimized, which can improve the high-frequencyproperties. High-frequency properties of a coaxial connector are, for example, the attenuation ortransmission quality of an RF signal or the quality of the shielding against interference signals.The inner conductor contact thus preferably does not extend beyond the insulation body and ispreferably also not set back from its end on the plug opening-side.Thus, in a multiple contact arrangement, preferably none of the inner conductor contacts extendbeyond the common insulation body and preferably none of the inner conductor contacts arerecessed from the plug opening end thereof.In a further preferred configuration of the coaxial connector, the inner conductor contact can bereceived in the insulation body without clearance. In particular, the insertion bevels of the insulationbody and of the inner conductor contact can be arranged flush next to each other, or can bein flush contact with each other, or can be arranged spaced apart from each other at a gap distancewhich is preferably less than one tenth of a diameter of the insertion opening. Further preferably, this gap spacing may be less than one-twentieth of the diameter of the insertion opening.A clearance-free accommodation of the inner conductor contact in the insulation body preventsjamming or clamping of the inner conductor contact in the insulation body.In particular, the inner conductor contact can be accommodated in the insulation body withoutradial pretension. This has the advantage that no radial deflection of elements of the inner conductor contact and / or elements of the insulation body is necessary when assembling the coaxialconnector and thus clamping or jamming of both elements relative to each other is prevented.Particularly preferably, the insertion bevel can be formed at least in sections by spring arms ofthe inner conductor contact that can be deflected resiliently towards the insulation body. This hasthe advantage that the resiliently deflectable spring arms of the inner conductor contact exert aradially inwardly acting restoring force of the spring arms on an inserted contact element and thusa secure electrical connection can be established with the inserted contact element.The coaxial connector according to the invention can be improved by comprising an outer conductorcontact which encloses the insulation body and the inner conductor contact. The outerconductor contact extends parallel to the inner conductor contact and parallel to the insulationbody. Preferably, the outer conductor contact also extends to the plug opening-side end of theinsulation body. The outer conductor c ontact is always galvanically isolated from the inner conductorcontact by the insulation body.In a multiple contact arrangement, the outer conductor contact can preferably enclose both innerconductor contacts, whereby the outer conductor contact can always be galvanically isolated fromthe inner conductor contacts by the common insulation body also in this configuration.In order to ensure correct arrangement of the insertion bevels during assembly of the coaxialconnector, the insulation body of the coaxial connector may, in a preferred configuration, havecentering elements for twist-proof insertion of the insulation body into the outer conductor contact.These can preferably extend radially outwards, i.e. away from the inner conductor contact. Suchcentering elements facilitate the setting of a rotational orientation of the insulation body with re15spect to the outer conductor contact or of the outer conductor contact with respect to the insulationbody. Likewise, a correct insertion of the insulation body into the outer conductor contact can beensured.The coaxial connector can be further improved in that the insulation body has coding elementsfor non-rotational insertion of the inner conductor contact into the insulation body. Analogous tothe rotational alignment between the insulation body and the outer conductor contact, the codingelements can be used to align the inner conductor contact rotationally with respect to the insulationbody and insert it into the latter in a guided manner. The rotational alignment takes placearound the insertion axis or the longitudinal direction.In a multiple contact arrangement, the coding elements are each used for rotational alignment ofan inner conductor contact about the axis of the corresponding inner conductor contact. Eachinner conductor contact can be aligned by means of respective coding elements.For rotational alignment, it is preferred if the inner conductor contact has mating coding elementsthat are configured to interact with the coding elements of the insulation body and to establish atleast one rotational alignment between the inner conductor contact and the insulation body.These mating coding elements can be formed as an elevation, for example in the form of a tab orfin, which can be inserted into and guided in the coding elements in the form of a slot or groove.Particularly preferably, the mating coding elements of the inner conductor contact can form a stopwhich is configured to limit the position of the inner conductor contact in the longitudinal directionwhen it is inserted into the insulation body. Thus, the mating coding elements can fulfill these twofunctions simultaneously, the rotational alignment and the provision of a stop.In a multiple contact arrangement, each contact arrangement may include mating coding elementsfor the corresponding first inner conductor contact or the corresponding second inner conductorcontact.The stop can be implemented by a surface facing the plug opening-side end, which is broughtinto engagement with an abutment surface of the insulation body facing away from the plug open10ing-side end when the inner conductor contact is inserted into the insulation body and its mountingposition is reached.This mounting position can be secured by latching elements, which will not be discussed furtherhere.The inner conductor contact and / or the outer conductor contact can be punched-bent parts.In the following, the coaxial connector according to the invention will be described in more detailwith reference to the accompanying drawings. In the drawings, purely exemplary configurationsof the coaxial connector are shown, wherein in other configurations of the coaxial connector, featuresof the coaxial connector shown can be omitted and / or combined with each other as desired.It is shown by:Fig. 1 a perspective view of a configuration of the coaxial connector / contact arrangement for acoaxial plug according to the invention;Fig. 2 an exploded view of the coaxial connector of Fig. 1;Fig. 3 a sectional view of the coaxial connector according to the invention along the line A-Ashown in Fig. 1;Fig. 4 a sectional view of the coaxial connector according to the invention along the line B-Bshown in Fig. 1;Fig. 5 a perspective view of a multiple contact arrangement; andFig. 6 a sectional view of the multiple contact arrangement of Fig. 5 along the line C-C shown inFig. 5.In Fig. 1, the contact arrangement for a coaxial plug 1 according to the invention is shown. Thecontact arrangement 1 may also be referred to as a coaxial connector 1 and is shown in perspectiveview. Purely exemplarily, a coordinate system is shown which characterizes an x-direction, ay-direction and a z-direction.The coaxial connector 1 shown in Fig. 1 is purely exemplarily a coaxial coupling 3, but can alsobe configured as a coaxial socket (not shown). Both the coaxial coupling 3 and the coaxial socketare configured for mating with a coaxial plug (this is not shown, the coaxial plug has a pin-shapedinner conductor). The coaxial coupling 3 as well as the coaxial socket (not shown) are thus femaleend pieces for connecting two coaxial cables 4.The coaxial coupling 3 has an inner conductor contact 5 and an insulation body 7 enclosing theinner conductor contact 5. The insulation body 7 consists of a dielectric 9, i.e. an electrically insulatingmaterial 11.Furthermore, the coaxial connector 1 has an outer conductor contact 13, which may be made ofa metal 15 and is electrically connected to an outer conductor of the coaxial cable 4. The outerconductor represents a shielding of the coaxial cable 4.The inner conductor contact 5, the insulation body 7 as well as the outer conductor contact 13extend in a mating direction 15, which is oriented parallel to the z-direction. A plug face 17 of thecoaxial connector 1 points in the mating direction 15. The mating direction 15 corresponds to alongitudinal direction 19 along which the coaxial connector 1 extends.The coaxial connector 1 has a plug-side end 21 and a cable-side end 23. At the cable-side end23, the coaxial cable 4 is connected to the coaxial connector 1. This is shown schematically.The plug face 17 is formed by a plug opening-side end 41 of the inner conductor contact 5 andby the plug opening-side end 41 of the insulation body.At the plug-side end 21, the inner conductor contact 5 has an insertion opening 25. This is configuredto receive a mating contact (not shown), for example in the form of a pin-shaped innerconductor of a coaxial plug.In the configuration of the coaxial connector 1 shown, the insertion opening 25 has four insertionbevels 27. These are formed by both the inner conductor contact 5 and the insulation body 7. Fordifferentiation purposes, the insertion bevels 27 of the inner conductor contact 5 can be referredto as first insertion bevels 29 and the insertion bevels 27 of the insulation body 7 can be referredto as second insertion bevels 31.The first and second insertion bevels 27, 29 are each formed in pairs and are diametrically opposed.The configuration of the coaxial connector 1 shown has , purely exemplarily, four insertionbevels 27, although in other configurations an almost arbitrary number of first insertion bevels 29and an almost arbitrary number of second insertion bevels 31 can be provided. Particularly preferablyand practicably, however, a pair of first and second insertion bevels 29, 31 is provided ineach case, with a first insertion bevel 29 following a second insertion bevel 31 in each case in acircumferential direction 33. The insertion bevels 27 form an insertion funnel 35.The inner conductor contact 5 is accommodated in the insulation body 7 without radial pretension.In other configurations (not shown), the inner conductor contact 5 can be accommodated in theinsulation body 7 without clearance.The first insertion bevels 27 are formed on deflectable spring arms 37, which are deflectableradially away from an axis 39 of the coaxial connector toward the insulation body 7.Fig. 2 shows an exploded view of the coaxial connector 1, with the dashed line schematicallyshowing how, that is, along which directions the inner conductor contact 5 is received in the insulationbody 7 and the insulation body is received in the outer conductor contact 13.In Fig. 2, it can further be seen that both the inner conductor contact 5 and the outer conductorcontact 13 are punched-bent parts 43 that have a punched-bent seam 45.Fig. 2 also shows the paired first and second insertion bevels 29, 31 formed by the inner conductorcontact 5 and the insulation body 7, respectively.For correct orientation of the insulation body 7 with respect to the outer conductor contact 13, theinsulation body 7 has centering elements 47.For correct orientation of the inner conductor contact 5 with respect to the insulation body 7, theinsulation body 7 has coding elements 51. These are formed inside the insulation body 7 and areshown in Fig. 4.The inner conductor contact 5 has mating coding elements 49 which are designed to interact withthe coding elements 51 of the insulation body 7.In the configuration shown, the mating coding elements 49 of the inner conductor contact 5 areformed as a tab or fin 53 that can be inserted into a recess 55 or groove 57 of the insulation body7. In the configuration shown, the coding elements 51 are formed as a recess 55 or groove 57.In other configurations, the groove 57 may be formed on the inner conductor contact 5 and thefin 53 may be formed on the insulation body 7. Other configurations of interacting coding elements49, 51 are also conceivable.By means of the centering elements 47, the coding elements 51 and the counter-coding elements49, a rotational alignment of the insulation body 7 to the outer conductor contact 13 or of the innerconductor contact 5 to the insulation body 7 is possible.The mating coding elements 49 of the inner conductor contact 5 also form a stop 59. This isconfigured to limit a position of the inner conductor contact 5 when it is inserted into the insulationbody 7 in the longitudinal direction 19. For this purpose, the stop 59 can abut against an abutmentsurface 61 of the insulation body 7, as shown in Fig. 4.In Fig. 3, the coaxial connector 1 of Fig. 1 is shown in a section along the dotted line A-A. It canbe seen that the inner conductor contact 5 and the insulation body 7 extend along the longitudinaldirection 19. The inner conductor contact 5 also extends along the longitudinal direction 19 to theplug opening-side end 41 of the insulation body 7. This improves the high-frequency propertiesof the coaxial connector 1, since a defined and continuous shielding of the inner conductor contact5 is always ensured and, after mating with a mating connector, a defined and continuous shieldingof the inner conductor is also ensured.This configuration of the coaxial connector 1 has the further advantage that a test tip 63, this isshown schematically in the form of a rectangle, can be moved at the plug-side end 21 of thecoaxial connector 1, i.e. towards the plug face 17, and brought into contact with it. With this testtip 63, the inner conductor contact 5 can be contacted. This allows to determine the position ofthe inner conductor contact 5 in the insulation body 7 or to confirm a correct position.Furthermore, it can be seen in Fig. 3 that the inner conductor contact 5 is secured by latchingelements 65 in the form of latching hooks 67 in latching openings 69 of the insulation body 7.In Fig. 5 and Fig. 6, a multiple contact arrangement 2 is shown. The multiple contact arrangement2 may be referred to as a coaxial connector 1 and is a twinaxial connector 1c. Also the showntwinaxial connector 1ca is a coaxial coupling 3, i.e. in particular a twinaxial coupling 3a.In contrast to the previously described configuration of the contact arrangement 1, the multiplecontact arrangement 2 has two contact arrangements 1. A first contact arrangement 1a and asecond contact arrangement 1b are identical. The multiple contact arrangement thus has a firstinner conductor contact 5a and a second inner conductor contact 5b. The elements of the innerconductor contacts 5a and 5b correspond to those of the inner conductor contact 5 of the previouslydescribed configuration.Thus, the multiple contact arrangement 2 shown has a first insertion funnel 35a and a secondinsertion funnel 35b.Such a multiple contact arrangement 2 has the advantage that, for example, symmetrical signalswith a higher data rate can be transmitted via a pair of inner conductor contacts 5. Such connectorsand cables can advantageously be used for contacting SA-TA3 or DisplayPort interfaces. Theinner conductor contacts 5 are arranged next to each other and galvanically isolated from eachother.The configuration of the multiple contact arrangement 2 shown also has the further elements suchas the second insertion bevels 31, the first insertion bevels 29, the insulation body 7 consisting ofa dielectric 9, i.e. an insulating material 11, and the outer conductor contact 13. In the multiplecontact arrangement 2 shown, the insulation body 7 of the first contact arrangement 1a and theinsulation body 7 of the second contact arrangement 1b are monolithic, i.e. are formed in onepiece and form a common insulation body 7a.The multiple contact arrangement 2 shown has an oval plug face 17a, which describes a shapecomposed of two semicircles and a rectangle, wherein the rectangle is disposed between thesemicircles.An alternative geometry of the plug face 17 is shown schematically on the right side of Fig. 5 inthe form of a round plug face 17b.In Fig. 6, the multiple contact arrangement 2 of Fig. 5 is shown in sectional view along the line CC.The identical configuration of the first inner conductor contact 5a and the second inner conductorcontact 5b, as well as the insertion funnels 35a and 35b, can be clearly seen. Both innerconductor contacts 5 extend the same distance to the plug-side end 21. Both inner conductorcontacts 5 are also completely surrounded by the outer conductor contact 13 and galvanicallyseparated both from each other and from the outer conductor contact 13 by the common insulationbody 7a.Furthermore, it can be seen that the inner conductor contacts 5a and 5b inside the common insulationbody 7a differ slightly in shape from the inner conductor contact 5 of Fig. 1 to Fig. 4. Atthe plug-side end 21, i.e. in the configuration of the elements of the plug face 17 and in particularin their function of facilitating the insertion of a mating contact, the two configurations do not differ.The general geometry of the plug face 17 and also the number of inner conductor contacts 5 andthus the number of insertion funnels 35 are different, as can be seen in the comparison of Fig. 1with Fig. 5.Reference Signs1 contact arrangement for a coaxial plug / coaxial connector1a first contact arrangement1b second contact arrangement1c twinaxial connector2 multiple contact arrangement3 coaxial coupling3a twinaxial coupling4 coaxial cable5 inner conductor contact5a first inner conductor contact5b second inner conductor contact7 insulation body7a common insulation body9 dielectric11 insulating material13 outer conductor contact14 metal15 mating direction17 plug face17a oval plug face17b round plug face19 longitudinal direction21 plug-side end23 cable-side end25 insertion opening27 insertion bevel29 first insertion bevel31 second insertion bevel33 circumferential direction35 insertion funnel35a first insertion funnel35b second insertion funnel37 deflectable spring arm39 axis of the coaxial connector41 plug opening-side end43 punched-bent part45 punched-bent seam47 centering elements49 mating coding elements51 coding elements53 tab or fin55 recess57 groove59 stop61 abutment surface63 test tip65 latching element67 latching hooks69 latching openingx x-directiony y-directionz z-direction

Claims

1. Contact arrangement (1) for a coaxial plug, comprising - an inner conductor contact (5) and - an insulation body (7) with dielectric function, which encloses the inner conductor contact (5), wherein the inner conductor contact (5) has an insertion opening (25) for inserting a mating contact into the inner conductor contact (5) and wherein the insertion opening (25) has insertion bevels (27) formed by the inner conductor contact (5) and the insulation body (7).

2. Contact arrangement (1) according to claim 1, wherein the insertion bevels (27) together form an insertion funnel (35).

3. Contact arrangement (1) according to claim 1 or 2, wherein in a circumferential direction (33) an insertion bevel (27, 29) of the inner conductor contact (5) follows an insertion bevel (27, 31) of the insulation body (7).

4. Contact arrangement (1) according to claim 3, wherein two opposing insertion bevels (29) of the inner conductor contact (5) and two opposing insertion bevels (31) of the insulation body (7) form the insertion funnel (35).

5. Contact arrangement (1) according to one of claims 1 to 4, wherein the inner conductor contact (5) and the insulation body (7) extend along a longitudinal direction (19), wherein the inner conductor contact (5) extends in the longitudinal direction (19) to a plug opening side end (41) of the insulation body (7).

6. Contact arrangement (1) according to one of claims 1 to 5, wherein the inner conductor contact (5) is accommodated in the insulation body (7) without clearance.

7. Contact arrangement (1) according to one of claims 1 to 6, wherein the inner conductor contact (5) is accommodated in the insulation body (7) without radial pretension.

8. Contact arrangement (1) according to one of claims 1 to 7, wherein the insertion bevel (27) is formed at least in sections by spring arms (37) of the inner conductor contact (5) which can be deflected resiliently towards the insulation body (7).

9. Contact arrangement (1) according to one of claims 1 to 8, further comprising an outer conductor contact (13) which encloses the insulation body (7) and the inner conductor contact (5).

10. Contact arrangement (1) according to claim 9, wherein the insulation body (7) comprises centering elements (47) for non-rotatable insertion of the insulation body (7) into the outer conductor contact (13).

11. Contact arrangement (1) according to one of claims 1 to 10, wherein the insulation body (7) comprises coding elements (51) for non-rotatable insertion of the inner conductor contact (5) into the insulation body (7).

12. Contact arrangement (1) according to claim 11, wherein the inner conductor contact comprises mating coding elements (49) configured to interact with the coding elements (51) of the insulation body (7) and to establish at least one rotational alignment between the inner conductor contact (5) and the insulation body (7).

13. Contact arrangement (1) according to claim 12, wherein the mating coding elements (49) of the inner conductor contact (5) form a stop (59) configured to limit the position of the inner conductor contact (5) in the longitudinal direction (19) when inserted into the insulation body (7).

14. Multiple contact arrangement (2) comprising a first contact arrangement (1, 1a) according to one of claims 1 to 13 and a second contact arrangement (1, 1b) according to one of claims 1 to 13, wherein the insulation body (7) of the first contact arrangement (1, 1a) and the insulation body (7) of the second contact arrangement (1, 1b) form a common insulation body (7a).

15. Multiple contact arrangement (2) according to claim 14, wherein the inner conductor contact (5) of the first contact arrangement (1, 1a) and the inner conductor contact (5) of the second contact arrangement (1, 1b) are arranged symmetrically in the common insulation body (7a) and / or parallel to each other.