Plug-in connector and plug-in connection arrangement

Abstract

The invention relates to a plug connector and a plug connection device. The plug connector (1) for transmitting high-frequency signals comprises a cable (20) having at least one free end, a contact piece (10) arranged at the free end of the cable, and a connection element (30) arranged between the contact piece (10) and the cable (20), the connection element (30) having at least one first region (I) having a first outer diameter (D1) and at least one second region (II) having a second outer diameter (D2), the second outer diameter (D2) being greater than the first outer diameter (D1), and the first region (I) comprising at least one third region (III), the connection element (30) having an outer diameter corresponding to the second outer diameter (D2) at least locally in the third region (III). The plug connection device (40) is for at least one plug connector (1) for transmitting high-frequency signals.

Description

TECHNICAL FIELD

[0001] The present invention relates to a plug-in connector for transmitting high-frequency signals, in particular for use in a vehicle. BACKGROUND

[0002] In vehicles, different engineering components communicate with each other by exchanging data with each other. The data exchange preferably takes place in the form of high-frequency signals, which are conducted via corresponding cables, for example coaxial cables or micro coaxial cables. Plug-in connectors are usually used at the interface between the cables and / or the engineering components. In order to make simple operation possible in automotive engineering, plug-in connectors are usually standardized, i.e. specific dimensions and dimensions of the plug-in connectors are predetermined and must be adhered to. The predetermination is mainly based on the durability or detachability of the plug-in connectors and a secure data transmission. However, due to the predetermined dimensions, difficulties can arise when installing the plug-in connector components, for example when the components are not always fully visible or when excessive gaps occur between the components when assembling.

[0003] Document DE 10 2016 002 408 A1 relates to a coaxial plug-in connector and a connection system comprising the same. In the plug-in connector, in addition to a first contact transition between a first coaxial plug-in connector and a second coaxial plug-in connector belonging thereto, a second contact transition is provided on the outer conductor side. To this end, a resilient contact part is provided between the first coaxial plug-in connector and the second coaxial plug-in connector, which is spaced apart from the first contact transition, in particular from a first locking mechanism. The resilient contact part is preferably designed as a toroidally wound ring. The toroidally wound wire of the ring is resilient in the radial and axial direction and bridges different spacings between a coaxial socket and a coaxial plug, which can occur depending on a corresponding radial offset between the coaxial plug and the coaxial socket. In the case of a radial offset, the axis of the connection element has a specific angle, which is not zero, with respect to the axis of the coaxial socket.

[0004] However, due to the resilience of the contact part, the radial offset, i.e. the skew, cannot be removed when the two plug-in connectors are placed and arranged in each other. This can lead to further inaccuracies when installing. Furthermore, the contact part has to be provided as a separate component on the plug-in connector, which increases the outlay. Finally, the contact part has to be designed and fixed so that it withstands the large mechanical forces that occur in a vehicle, which are associated with additional outlay, at least during the predetermined service life. SUMMARY

[0005] It is therefore an object of the present invention to provide a plug-in connector for transmitting high-frequency signals and a plug-in connection device, which are of simple and stable construction, meet the required standards and enable a quick and secure installation.

[0006] In particular, this object is achieved by a plug connector for transmitting high-frequency signals. The plug connector comprises a cable having at least one free end, a contact arranged at the free end of the cable, the contact having a free contact end on a side facing away from the cable, and a connecting element arranged between the contact and the cable, wherein the connecting element is fixedly connected to the contact and the cable in the mounted state. Here, the connecting element has at least one first region with a first outer diameter on a side facing the contact and at least one second region with a second outer diameter on a side facing the cable, wherein the second outer diameter is greater than the first outer diameter. Finally, the first region comprises at least one third region, wherein the connecting element has at least locally an outer diameter corresponding to the second outer diameter in the third region.

[0007] The plug connector enables the connection of a cable to a terminal which is complementary to the contact. The cable is preferably a coaxial cable or a micro-coaxial cable and the terminal is preferably a corresponding coaxial plug. High-frequency signals can be transmitted via the plug connector in a vehicle. The plug connector can also be used for other cable types. Common wire groups LL and RG of different diameters or dimensions are preferably built into the plug connector. Due to this difference, a diameter difference occurs along the connecting element when the plug connector is assembled, in particular when the connecting element is crimped.

[0008] The housing size of the housing for accommodating at least one plug connector and the size of the at least one plug connector accommodation within the housing are essentially strictly predetermined. In the predetermined size, the at least one plug connector accommodation has a cylindrical shape of the same shape. The above-mentioned diameter difference at the connecting element causes different engagement situations in the plug connector accommodation in the cylindrical shape of the same shape and thus a gap between the circumferential wall of the plug connector accommodation and the at least one first region of the connecting element, wherein the first region has a smaller diameter. This gap can lead to a skewing of the plug connector and difficulties in mounting. Especially at the penetration safeguard in the housing, a collision of the plug connector can occur or is possible in the case of skewing transport.

[0009] According to the invention, the occurring diameter difference should be compensated in order to ensure a uniform engagement situation without impairing the mechanical and electrical properties of the plug connector here. Via at least one shaped indentation, preferably a bulge or a protrusion, at the connecting element, the diameter in the particular region is enlarged at least locally. Thereby, the (wobbling) gap can be reduced or eliminated when the plug connector is engaged into the housing. For this purpose, the first region of the connecting element having a smaller outer diameter compared to the second region comprises a third region, which has at least locally in the circumferential direction of the connecting element an outer diameter corresponding to the outer diameter of the second region.

[0010] When the plug connector is joined into the housing, the plug connector is introduced into the housing with the free contact end of the contact. Since the first region and the third region are arranged on the side facing the free contact end, the third region reaches into the housing before the second region. Furthermore, the plug connector can be introduced into the housing without obstacles from the direction of the free contact end up to the third region, preferably up to the beginning of the third region. The aforementioned penetration safeguard is also removed. By introducing the third region, the plug connector can be precisely aligned with the housing or the plug connector receptacle in the housing. Here, the third region is visible from the outside and disappears into the housing with the introduction. The visibility simplifies the alignment and thus the installation.

[0011] The outer diameter of the contact is preferably smaller than the outer diameter of the cable. The dimensions of the contact and the cable are predetermined. For a space-saving arrangement or connection, the contact usually has a smaller diameter compared to the cable.

[0012] The connection element preferably directly surrounds the contact and the cable in the first region and / or the second region of the connection element in the installed state. By the direct or close connection, a space-saving and reliable connection is ensured. The direct connection preferably comprises a crimping of the connection element, so that the contact and the cable are connected force-fittingly. Since the contact and the cable have different outer diameters, different outer diameters are produced along the connection element when directly surrounding the connection element.

[0013] The connection element preferably comprises a connection sleeve, in particular a crimp sleeve or a connection tube. The connection sleeve or the crimp sleeve is a standard part and can be used simply and inexpensively. The connection sleeve or the crimp sleeve is preferably formed from metal. The connection sleeve or the crimp sleeve can in particular be connected to the contact and the cable with the aid of a press simply. In particular, the third region can be configured during the pressing. For the pressing, a star press is preferably used, since the star press achieves a uniform pressing force or pressing force distribution.

[0014] The third region preferably has a plurality of embossments which are configured at the circumference of the connection element spaced apart from one another. The embossments preferably comprise protrusions. The number of the circumferential embossments can be defined depending on the required pulling force. The embossments can be simply manufactured or introduced into the connection element during the pressing process. For the embossing, in particular no further work steps or fixing means are required. The plurality of embossments is arranged such that there is at least one section of the third region which has an outer diameter corresponding to the second outer diameter. The pairs of embossments are preferably arranged opposite one another on the circumference of the connection element.

[0015] Preferably, the embossing is configured in one piece with the connecting element. The connecting element preferably has a shape-stable material, in particular metal. Since the embossing configured in one piece from the connecting element is also formed from the shape-stable material of the connecting element, the embossing cannot be squeezed or bent during installation without a separate pressing tool. As a result, the plug-in connector can be reliably inserted into the housing at any time and without undesirable play.

[0016] Preferably, at the embossing, a guide element is provided in the transition between the first region and the third region. The guide element simplifies the introduction of the plug-in connector into the receiving opening of the housing due to its shape. This simplifies the installation.

[0017] The distance between the free contact end and the third region is preferably smaller than the distance between the free contact end and the second region. This means that the third region is closer to the free contact end. The plug-in connector is first inserted into the housing with the free contact end. The third region thus also reaches the housing or onto the housing before the second region. When the third region is inserted, the plug-in connector is already aligned with the housing.

[0018] In particular, the above object is also achieved by a plug-in connection device for at least one plug-in connector for transmitting high-frequency signals, the plug-in connection device having: at least one plug-in connector; and a housing having at least one plug-in connector receptacle for arranging the at least one plug-in connector in the housing. Here, the at least one plug-in connector receptacle has an inner diameter corresponding to the second outer diameter of the connecting element and a length corresponding to at least one distance between the free contact end and the third region.

[0019] The plug-in connection device preferably has a plurality of plug-in connection devices. Thereby, a plurality of plug-in connectors can be connected to complementary terminals at the same time. The housing protects this connection from the outside. In addition, the housing provides a locking possibility for a secure connection between the plug-in connector and the complementary terminal. The respective plug-in connector and the housing are preferably also engaged with one another in the assembled state, in particular via a locking mechanism. The length of the housing or the plug-in connector receptacle in the cable longitudinal direction is fixedly predetermined. In particular, the length is selected such that the plug-in connector is reliably arranged in the housing. In particular, the length of the plug-in connector can be several times the diameter of the receiving opening, so that the end of the plug-in connector receptacle opposite the receiving opening is only visible when viewed in the direction of the plug-in connector receptacle.

[0020] The plug-in connection device preferably also has a plug-in opening with a plug-in securing element, wherein the plug-in opening has a diameter which corresponds to the outer diameter of the contact. The plug-in opening is surrounded by the plug-in securing element. The plug-in securing element forms, inter alia, a wall. The contact of the plug-in connector has to be moved through the plug-in opening in order for the plug-in connector to reach its final position in the housing. By making the diameter of the plug-in opening just correspond to the outer diameter of the contact, the plug-in connector has to be precisely aligned in the housing and, in particular, along the accommodation axis A in order to move the plug-in connector through the plug-in opening. Furthermore, the precise alignment is important for a reliable connection to a complementary terminal which can be connected to the contact. BRIEF DESCRIPTION OF DRAWINGS

[0021] Further advantages and features of the application can be derived from the description of the preferred embodiments below. The features described herein and above can be implemented individually or in combination, provided that the features do not contradict one another. The following description of the preferred embodiments is given with reference to the drawings. Shown here are:

[0022] Figure 1 a side view of one embodiment of a plug-in connector;

[0023] Figure 2 a side view of one embodiment of a plug-in connection device with a plug-in connector without an embossing at the connection element;

[0024] Figure 3 a plug-in connection device with a plug-in connector with an embossing at the connection element during installation; Figure 2

[0025] Figure 4 a plug-in connection device in the installed state; Figure 3

[0026] Figure 5 a perspective view of a plug-in connection device; Figure 4

[0027] Figure 6a and Figure 6b a side view (Fig. 6) and a perspective view (Fig. 7) of a star press for producing an embossing on a connection element; and Figure 6a Figure 6b

[0028] Figure 7 a cross-sectional view of a plug-in connector in a star press during or after the pressing process. DETAILED DESCRIPTION

[0029] Figure 1 ​​​​​A side view along the middle axis M of one embodiment of the plug connector 1 is shown. The plug connector 1 has a contact 10, a cable 20 and a connection element 30. The connection element 30 is molded as a hollow cylinder and surrounds one end of the contact 10 and one end of the cable 20. The contact 10 and the cable 20 are preferably in abutment with each other within the connection element 30. By the abutment of the contact 10 and the cable 20, electrical signals, in particular high-frequency signals, can be transmitted in both directions. The contact 10 preferably has an inner conductor 13 and an outer conductor 15, which surrounds the inner conductor 13 annularly (see Figure 5 ). High-frequency signals are preferably transmitted at the contact 10 via the inner conductor 13. The outer conductor 15 preferably serves as a shield for the inner conductor 13. In the assembled state, the connection element 30 is fixedly, in particular inseparably, connected with the contact 10 and the cable 20 and holds the contact 10 and the cable 20 together.

[0030] The contact 10, or also referred to as cable outlet, can be connected to a terminal which is complementary to the contact 10, so that signals can be exchanged between the cable 20 and the complementary terminal via the plug connector 1. The dimensions of the contact 10 for the connection to the complementary terminal are predetermined. In particular, the contact 10 has a predetermined length. Furthermore, the contact 10 has an outer diameter D11. In Figure 1 The shown embodiment, the contact 10 also has a sleeve 16 with a front edge 17, wherein the front edge 17 points in the direction of the free end 12 of the contact 10. The free end 12 of the contact 10 has an edge 14. The edge 14 is preferably part of the outer conductor 15 of the contact 10. The edge 14 is thus configured in particular annularly. In one preferred embodiment, the edge 14 has a tapering shape towards the free end 12. The tapering shape simplifies the coupling of a complementary terminal to which the contact 10 can be connected and / or the threading of the contact 10 through a threading opening 58 in a housing 50 of a plug-in connection device 40 (see Figure 3 ).

[0031] The cable 20 is preferably a coaxial cable or a micro-coaxial cable for transmitting high-frequency signals. In other embodiments, other cable types can also be used. The cable 20 has an outer diameter D22. The outer diameter D22 is preferably greater than the outer diameter D11 of the contact 10.

[0032] The connection element 30 is preferably a crimp sleeve or a connection tube. The connection element 30 can preferably be pressed so that it permanently surrounds an introduced contact and / or cable when it is squeezed or crimped. In Figure 1 The shown embodiment, the connection element 30 has at least one first region I and a second region II.

[0033] The first region I is arranged on the side facing the contact piece 10. The first region I directly or closely and fixedly surrounds one end of the contact piece 10. The second region II is arranged on the side facing the cable 20. The second region II directly or closely and fixedly surrounds one end of the cable 20. Since the outer diameter D11 of the contact piece 10 is preferably smaller than the outer diameter D22 of the cable 20, a first outer diameter D1 of the connecting element 30 in the first region I is smaller than a second outer diameter D2 of the connecting element 30 in the second region II. In particular, the second outer diameter D2 of the connecting element 30 corresponds to the maximum outer diameter in the assembled state, i.e. after the extrusion. The maximum outer diameter is preferably in the range of 2 to 5 mm, more preferably in the range of 2.5 to 4 mm, still further preferably in the range of 3 to 3.5 mm. These and all other dimensions can be scaled arbitrarily for other plug connectors.

[0034] The second region II has a minimum spacing L3 from the free end 12 of the contact piece 10. A transition section 36 can be arranged between the first region I and the second region II, in which the outer diameter of the connecting element 30 increases from the first outer diameter D1 to the second outer diameter D2 from the side facing the contact piece 10.

[0035] The first region I has a third region III, wherein the third region III is preferably shorter than the first region I and is preferably spaced apart from the second region II or the transition section 36. The third region III preferably has a length in the range of 0.3-1 mm, more preferably in the range of 0.4-0.8 mm, still further preferably in the range of 0.5-0.6 mm. The third region III has a minimum spacing L1 from the free end 12 of the contact piece 10. The spacing L1 is preferably shorter than the spacing L3. The spacing L1 is preferably in the range of 12-18 mm, more preferably in the range of 13-16 mm, still further preferably in the range of 14-15 mm.

[0036] The third region III is preferably an annular or cylindrical region along the connecting element 30. In particular, at least one embossment 32 is arranged in the third region III. In the case of a separate embossment 32, the embossment 32 preferably extends over more than half the circumference. In one alternative embodiment, the embossment 32 can also extend over the entire circumference. The third region III preferably has a plurality of embossments 32. Plurality means two or more embossments. The plurality of embossments 32 is preferably formed along the circumference of the connecting element 30 spaced apart from one another such that the outer diameter of the connecting element 30 in at least one partial region of the third region III corresponds to the second outer diameter D2 of the connecting element 30. In particular, for this at least two embossments 32 are arranged on opposite sides of the circumference of the connecting element 30.

[0037] At the transition of at least one of the embossments 32, a guide element 34 is preferably provided between the first region I and the third region III. In the embodiment shown, the guide element 34 has an inclined plane and is provided on both sides of each embossment 32. In other embodiments, the guide element 34 can have other shapes, for example a curved plane, a stepped shape, rounded edges, etc. Furthermore, in other embodiments, the guide element 34 can be provided only on one side towards the contact piece 10. The guide element 34 serves to simplify the introduction of the plug connector 1 with the connecting element 30 into the plug connector accommodation 52 of the housing 50 (see Figures 2-5 ). One or more regions including the guide element 34 in the direction along the center axis M of the plug connector 1 can form a separate region, since there the outer diameter is greater than the first outer diameter D1 of the connecting element 30 and smaller than the second outer diameter D2. The guide element 34 can be configured together with the embossment 32, in particular during the pressing process. The guide element 34 is preferably configured in one piece with the connecting element 30.

[0038] Figures 2 to 5 A plug connection device 40 is shown, which has a housing 50 and a plug connector 1 introduced into the housing 50. In the embodiment shown, the housing 50 has a total of four plug connector accommodations 52, in which a plug connector 1 can be respectively provided. Each plug connector accommodation 52 can be identically designed, and the plurality of plug connector accommodations 52 can also be arranged differently in the housing 50 than shown in Figures 2 to 5 , for example all side by side.

[0039] In order to accommodate the plug connector 1 in one of the plug connector accommodations 52, the plug connector 1 is aligned with its center axis M to the respective accommodation axis A of the plug connector accommodation 52. The plug connector 1 is then introduced into the plug connector accommodation 52 with its free end 12 of the contact piece 10 first through the accommodation opening 54. The diameter D4 of the plug connector accommodation 52 or the accommodation opening 54 preferably corresponds to the maximum outer diameter of the plug connector 1, i.e. the second outer diameter D2 in the second region II of the connecting element 30. Thus, the plug connector 1 can be completely introduced into the housing 50 or the plug connector accommodation 52 and finally brought into position.

[0040] A penetration opening 58 is provided opposite each accommodation opening 54. The accommodation axis A runs centrally through the plug-in connector accommodation 52 and the penetration opening 58. Each penetration opening 58 is surrounded by a penetration safeguard 56, which determines the inner diameter D3 of the penetration opening 58. The penetration safeguard 56 is in particular a wall. The inner diameter D3 of the penetration opening 58 corresponds to the outer diameter D11 of the contact piece 10. The plug-in connector 1 can be moved through the penetration opening 58 until the sleeve edge 17 of the sleeve 16. When the sleeve edge 17 is stopped at the penetration safeguard 56, the plug-in connector 1 has reached its optimal end position within the housing 50. The plug-in connector 1 is secured in its end position via a latching mechanism.

[0041] Furthermore, Figure 2 A plug-in connector 1 is shown, in which no embossing 32 is present on the connection element 30. The outer diameter D11 of the contact piece 10 and the first outer diameter D1 in the first region of the connection element 30 is smaller than the inner diameter D4 of the accommodation opening 54 or the plug-in connector accommodation 52. Due to the diameter difference, a free space is formed between the plug-in connector 1 and the circumferential wall of the plug-in connector accommodation 52. When the plug-in connector 1 is introduced into the plug-in connector accommodation 52, this free space enables a play SP, by means of which the plug-in connector 1 can not only be moved along the plug-in connector accommodation 52, but also moved transversely to the plug-in connector accommodation 52, in particular tilted. Due to the tilting, the median axis M of the plug-in connector 1 and the accommodation axis A of the plug-in connector accommodation 52 no longer coincide.

[0042] The penetration safeguard 56 is usually provided in the housing 50 such that it is only visible in the viewing direction along the accommodation axis A. However, when the plug-in connector 1 is introduced into the housing 50, the installer cannot simultaneously move the plug-in connector 1 along the accommodation axis A and look along the accommodation axis A. When the plug-in connector 1 or the median axis M is tilted by an angle a with respect to the accommodation axis A, the free end 12 of the contact piece 10 abuts against the penetration safeguard 56 in a partial region of the edge 14 of the free end 12. Thereby, in the tilted state, the plug-in connector 1 cannot be continued to be inserted into the plug-in connector accommodation 52 or the housing 50. The plug-in connector 1 does not reach its optimal end position and is not latched. The installer can only attempt to move the free end 12 of the contact piece 10 through the penetration opening 58 by changing the way in which the tilting angle a is changed by tilting the plug-in connector 1 back and forth. This installation is both time-consuming and frustrating. Furthermore, if the correct alignment of the plug-in connector 1 in the plug-in connector accommodation 52 is only recognized by a haptic feedback upon impact, components can be damaged.

[0043] Figure 3A plug-in connector 1 is shown, which has a connection element 30 with an embossing 32. The embossing 32 causes the outer diameter of the plug-in connector 1 in the third region III of the connection element 30 to correspond at least locally to the outer diameter D2 in the second region II. The spacing LI between the free end 12 of the contact piece 10 and the third region III corresponds to the spacing L2 between the insertion opening 58 or the insertion safeguard 56 and the receptacle opening 54. In an alternative embodiment, the spacing LI can also be shorter than the spacing L2. In the case of a spacing LI that is less than or equal to the spacing L2, the third region III of the connection element 30 reaches the receptacle opening 54 before or simultaneously with the free end 12 of the contact piece 10 abutting the insertion safeguard 56. In order to move the plug-in connector 1 further into the housing 50, the installer must correctly align the receptacle opening 54 from the third region III, which is visible from the outside. Correct alignment means that the median axis M coincides with the receptacle axis A. As a result of the two axes A, M being aligned with one another, the free end 12 of the contact piece 10 is also aligned centrally with respect to the insertion opening 58. By displacement along the axes A, M, the plug-in connector 1 can be brought into its end position in the housing 50. By the third region III being visible from the outside during insertion into the receptacle opening 54, the installer can visually recognize the correct alignment and recalibrate if necessary. There is no need to tilt the plug-in connector 1 back and forth in the housing 50.

[0044] Figure 4 and Figure 5 A plug-in connector 1 is shown, which has a connection element 30 with an embossing 32. The embossing 32 causes the outer diameter of the plug-in connector 1 in the third region III of the connection element 30 to correspond at least locally to the outer diameter D2 in the second region II. The spacing LI between the free end 12 of the contact piece 10 and the third region III corresponds to the spacing L2 between the insertion opening 58 or the insertion safeguard 56 and the receptacle opening 54. In an alternative embodiment, the spacing LI can also be shorter than the spacing L2. In the case of a spacing LI that is less than or equal to the spacing L2, the third region III of the connection element 30 reaches the receptacle opening 54 before or simultaneously with the free end 12 of the contact piece 10 abutting the insertion safeguard 56. In order to move the plug-in connector 1 further into the housing 50, the installer must correctly align the receptacle opening 54 from the third region III, which is visible from the outside. Correct alignment means that the median axis M coincides with the receptacle axis A. As a result of the two axes A, M being aligned with one another, the free end 12 of the contact piece 10 is also aligned centrally with respect to the insertion opening 58. By displacement along the axes A, M, the plug-in connector 1 can be brought into its end position in the housing 50. By the third region III being visible from the outside during insertion into the receptacle opening 54, the installer can visually recognize the correct alignment and recalibrate if necessary. There is no need to tilt the plug-in connector 1 back and forth in the housing 50.

[0045] The dimensions of the components, in particular the housing 50 and the contact piece 10, are predetermined. In particular, the dimensions are determined by standards and cannot be changed arbitrarily. During or after the positioning of the connection element 30 at the contact piece 10 and / or the cable 20, a third region III can be produced, which has an outer diameter that corresponds to the maximum outer diameter of the plug-in connector 1 in the assembled state. In particular, the production of the embossing 32 can be as Figure 6a and Figure 6b and Figure 7The pressing-in of the connection element 30 into the contact piece 10 and the cable 20 is effected in a manner known per se by means of a star press 100. The star press 100 is designed to press-bend the connection element 30, for example a crimp sleeve with a butt edge or a completely closed tube, into the desired shape. The star press 100 is composed of a plurality of pressing elements 102 which are arranged circumferentially on the length of the connection element 30. The pressing elements 102 can be moved in a radial direction with respect to the central axis M of the plug connector 1 synchronously. In the open position, the pressing elements 102 are remote from the central axis M and thus spaced apart from one another. For pressing, the pressing elements are moved in the radial direction towards the central axis M. By means of the synchronous movement of the pressing elements 102, a uniform pressure or pressing force is exerted on the connection element 30, thereby connecting the connection element 30 to the contact piece 10 and the cable 20. Each pressing element 102 has here the same area which is complementary to the connection element 30 being pressed. The same pressure is thus exerted in each area.

[0046] Furthermore, at least some of the pressing elements 102 have at least a portion of a recess 104 which, in the state of completed pressing, forms a complementary part of the pressure stamp 32 on the connection element 30. The pressure stamp 32 can be produced by the recess 104 upon pressing. In an alternative embodiment, the pressure stamp 32 is already applied to the connection element 30 prior to pressing in the star press 100, and the recess 104 in the star press 100 effects the retention of the pressure stamp 32 and a uniform pressure on the connection element 30.

[0047] Reference List

[0048] 1 plug connector

[0049] 10 contact piece

[0050] 12 free contact end

[0051] 13 inner conductor

[0052] 14 edge

[0053] 15 outer conductor

[0054] 16 sleeve

[0055] 17 sleeve edge

[0056] 20 cable

[0057] 30 connection element

[0058] 32 pressure stamp

[0059] 34 guide element

[0060] 36 transition section

[0061] 40 plug-in connection device

[0062] 50 housing

[0063] 52 plug-in connector receptacle

[0064] 54 receptacle opening

[0065] 56 penetration safeguard

[0066] 58 penetration opening

[0067] 100 star press

[0068] 102 pressing element

[0069] 104 recess

[0070] a angle

[0071] A receptacle axis

[0072] D1 first outer diameter

[0073] D2 second outer diameter

[0074] D11 outer diameter of the contact

[0075] D22 outer diameter of the cable

[0076] D3, D4 diameter

[0077] I, II, III region

[0078] L1-L3 length

[0079] M center axis

[0080] SP gap.

Claims

1. A plug connector (1) for transmitting high-frequency signals, comprising: a cable (20) having at least one free end; a contact piece (10) arranged at the free end of the cable, the contact piece having a free contact end (12) on a side facing away from the cable (20); a connecting element (30) arranged between the contact piece (10) and the cable (20), wherein the connecting element (30) is fixedly connected to the contact piece (10) and the cable (20) in an installed state; wherein the connecting element (30) has at least one first region (I) with a first outer diameter (D1) on a side facing towards the contact piece (10) and at least one second region (II) with a second outer diameter (D2) on a side facing towards the cable (20), wherein the second outer diameter (D2) is greater than the first outer diameter (D1); a transition section (36) is arranged between the first region (I) and the second region (II), in which the outer diameter of the connecting element (30) increases from the first outer diameter (D1) to the second outer diameter (D2) from the side facing towards the contact piece (10), the first region (I) comprising at least one third region (III), wherein the connecting element (30) has an outer diameter corresponding to the second outer diameter (D2) at least locally in the third region (III).

2. Plug connector (1) according to claim 1, wherein The outer diameter of the contact piece (10) is smaller than the outer diameter of the cable (20).

3. Plug connector (1) according to claim 2, wherein The connecting element (30) directly surrounds the contact piece (10) and the cable (20) in the first region (I) and / or the second region (II) of the connecting element in the installed state.

4. Plug connector (1) according to any one of claims 1 to 3, wherein The connecting element (30) comprises a connecting sleeve.

5. Plug connector (1) according to claim 4, wherein The connecting sleeve is a crimp sleeve or a connecting tube.

6. Plug connector (1) according to any one of claims 1 to 3, wherein The third region (III) has a plurality of embossments (32) which are configured at the circumference of the connecting element (30) spaced apart from one another.

7. Plug connector (1) according to claim 6, wherein The embossments (32) are configured in one piece with the connecting element (30).

8. Plug connector (1) according to claim 6, wherein At the embossments (32), a guide element (34) is arranged in the transition between the first region (I) and the third region (III).

9. Plug connector (1) according to any one of claims 1 to 3, wherein The distance between the free contact end (12) and the third region (III) is smaller than the distance between the free contact end (12) and the second region (II).

10. A plug connection device (40) for at least one plug connector (1) for transmitting high-frequency signals, the plug connection device having: at least one plug connector (1) according to any one of claims 1 to 9; a housing (50) having at least one plug connector receptacle (52) for arranging at least one plug connector (1) in the housing (50); wherein At least one of the plug connectors housing (52) has an inner diameter corresponding to a second outer diameter (D2) of the connection element (30) and a length corresponding to at least one distance between the free contact end (12) and the third region (III).

11. Plug connection device (40) according to claim 10, further having a plug-in opening (58) with a plug-in securing element (56), wherein The insertion opening (58) has a diameter corresponding to an outer diameter of the contact piece (10).

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