EP3367514A1 - Plug-in connection for high frequency applications, for instance for ethernet use - Google Patents

Abstract

The invention relates to plug connectors (2) for a plug connection (1) for high frequency applications, wherein the plug connector (1) has at least two contact partners (25, 26) which are arranged in a contact carrier (20) of the plug connector (1), characterized in that the at least two contact partners (25, 26) are arranged at least once crossing each other in their axial course in the contact carrier (20) of the connector (2).

Description

The invention relates to a connector for a connector for high frequency applications, wherein the connector has at least two contact partners, which are arranged in a contact carrier of the connector, and a cable set with such a connector according to the features of the preamble of the respective independent claim.

There are connectors for a connector, which can be put together, for example, from two mutually corresponding connectors, which have a contact carrier. The contact carrier in turn has at least one, as a rule, two or often more than two contact chambers, in which a contact partner is used. Such a connector is arranged at one end of a cable (alternatively, for example, on a circuit board of an electronic device), wherein in each case a contact partner is connected to an electrical conductor of the cable. Such arranged at one end of a cable connector forms also in a conventional manner a cable set. If two matched connectors are plugged together they form a connector to transmit energy and / or signals.

In particular, in the case of data transmissions, especially in the transmission of digital signals, it is necessary to prevent interference from the outside can act on the connector or on the cable. In addition, should be avoided that due to the transmission of signals in the high frequency range on such sets of cables with connectors noise signals are emitted to the outside. For this purpose, it has already become known to use cables with a shield, for example a shielding braid. Likewise, it has already been thought to provide a housing of the connector within which the contact carrier is arranged to provide a shielding effect.

The invention has for its object to provide a connector for a connector for high-frequency applications and a corresponding cable set, wherein at one end of a cable, such a connector is arranged to be avoided with which the above-mentioned disadvantages. In particular, in the data transmission via the connector crosstalk or crosstalk should be reduced or even avoided as far as possible.

This object is solved by the features of the two independent claims.

With regard to the connector for a connector for high-frequency applications, the invention provides that the at least two contact partners are arranged at least once crossing each other in their axial course spaced from each other in the contact carrier of the connector. It goes without saying that the at least two, possibly also more than two contact partners in an independent contact chamber, which is formed by the contact carrier, are arranged so that they are electrically isolated from each other and no short circuits in the energy or data transmission can occur. This means that each contact partner in the contact carrier a own contact chamber is present, in which the contact partner is used in a suitable manner. Of course, it is alternatively also conceivable for the contact partners to be arranged at a distance from one another and then to be surrounded by a material, for example a plastic injection molding material, which forms the contact carrier.

Another essential aspect of the invention is that the at least two contact partners are arranged at least once crossing in the contact carrier in their axial course. As a result, crosstalk or crosstalk during the signal transmission, in particular during the transmission of high-frequency and / or digital signals, is substantially reduced or, in an ideal manner, completely prevented.

This embodiment of the contact partners and their arrangement in the contact carrier is preferably used when the connector is arranged at one end of a twisted pair cable. Such a twisted pair cable ensures already in a known manner by the stranding or twisting of its electrical conductors, which are also electrically isolated from each other, a crosstalk or crosstalk. According to the invention, this stranding or twisting of the electrical conductors of the twisted-pair cable is thus advantageously introduced or continued into the connector. The advantageous course of the twisted or stranded electrical conductor of the cable is thus guided into the connector or in both connectors of the connector and looped through, so that there is almost no interruption of this stranding or twisting and thus continue the crosstalk or crosstalk is reduced, in particular with regard to the connector according to the invention, since known connectors could not achieve this effect.

Further embodiments of the invention are specified in the subclaims and are explained below with reference to the figures.

FIG. 1 shows a connector 1, which is formed by a first connector 2 and a second connector 3. In FIG. 1 is shown that the two connectors 2, 3 are not yet plugged together. Their mutually facing mating faces are designed such that they allow mating, whereby the two connectors 2, 3 are mechanically connected to each other and their inner contact partners are electrically contacted after mating.

The first connector 2 has a contact carrier 20. The contact carrier 20 is made of an electrically insulating material in one or more parts. It is arranged at the end of a cable, wherein the cable corresponding to the contact partners, which are arranged within the contact carrier 20, electrical conductors 21, 22 has. In this embodiment, to simplify the illustration, it can be seen that the two electrical conductors 21, 22 are twisted together in a manner known per se in order to at least reduce crosstalk or crosstalk during signal transmission via these two conductors 21, 22. Of course, it is conceivable to use more than this pair of two electrical conductors 21, 22 and accordingly to provide contact partners in the contact carrier 20.

The first connector 2 has, together with its contact carrier 20 and the cable, at the end of which it is arranged, a cable set.

Similarly, in FIG. 1 the second connector 3 is shown, which in turn likewise has a contact carrier 30 with contact partners arranged therein, wherein each contact partner is arranged at the end of a respective electrical conductor 31, 32.

The two connectors 2, 3, in FIG. 1 are shown are largely identical, except for their mutually facing mating faces, with which they are put together to form the connector 1. Depending on the geometry of the respective mating face of the two connectors 2, 3 and the arrangement and design of their contact partners, the two connectors 2, 3 may also be formed mirror-symmetrically such that they are identical and then it is the same parts. FIG. 2 shows the connector 1 in the assembled state in which the two connectors 2 and 3 have been put together. As a result, the two connectors 2, 3 together with the cable to which they are connected form a continuous plug connection. In each case one of the two connectors 2, 3 together with the associated cable to which they are arranged, each form a cable set. Alternatively, the plug connection 1 can be formed in that the first plug connector 2 and / or the second plug connector 3 are not arranged at the end of a cable but, for example, on a printed circuit board and the electrical conductors 21, 22 and 31, respectively, 32 is printed conductors on the circuit board.

In FIG. 3 the structure of the two connectors 2, 3 is shown in detail in one embodiment. With respect to the connector 2 it can be seen that its contact carrier 20 is formed by an upper part 23 and a lower part 24, between which the at least two contact partners 25, 26 is inserted. This takes place in such a way that the at least two contact partners 25, 26 are arranged spaced apart from each other in the axial direction at least once in the contact carrier 20 of the connector 2. This is done in this embodiment by the shape shown, the two contact partners 25, 26, in which they have a rectangular cross-section. The two end portions of the contact partners 25, 26 are mounted in corresponding recesses in the lower part 24 and are fixed after the assembly of the upper part 23 in its position in the contact carrier 20. In the direction of the mating face, the two contact partners 25, 26 have corresponding connection geometries which correspond to the connection geometries of the contact partners of the connector 3. At its end remote therefrom, the two contact partners 25, 26 are contacted mechanically and electrically with the respective electrical conductor 21, 22. This can be done for example by a solder joint, a Crimpverbindung or similar compounds.

Looking at the FIG. 3 the idea according to the invention can be seen very well, namely that the twisting of the electrical conductors 21, 22 is continued in the axial course of the contact partners 25, 26 connected to them. The same applies to the connector 3, the contact carrier 30 is also formed by an upper part 33 and a lower part 34. Between these two parts 33, 34 are analogous to the connector 2, the two contact partners 35, 36 are formed and arranged, which in turn are mechanically fixed and electrically connected at the respective end of the two electrical conductors 31, 32 in a suitable manner.

According to this embodiment FIG. 3 are as in the presentation in FIG. 1 the mutually facing mating faces of the two connectors 2, 3 different from each other, but coordinated so corresponding to one another that the two connectors 2, 3 can be plugged together to form the connector 1. As in relation to FIG. 1 set forth, the mutually facing mating faces of the two connectors 2, 3 can be designed such that it is identical in the two connectors 2, 3 identical parts that can be plugged into the connector 1.

It is essential for the invention that the two contact partners 25, 26 and 35, 36 of the two connectors 2, 3 not only in their axial course at least once crossing (as in FIG. 3 shown) are formed, but that they are so spaced apart from each other in their respective contact carrier 20, 30 are arranged, that at any time a mutual contact is excluded. This can be done, for example, by the fact that the two contact partners 25, 26 and 35, 36 are clamped in their two end regions in the contact carrier 20 or 30 and their intermediate region is arranged to float freely. Alternatively, it can also be thought to use the contact partners crossing in their axial course at least once in geometrically corresponding contact chambers of the respective contact carrier. In addition, it can be thought of as an alternative, for example, the contact partners, as in FIG. 3 are shown to fix in an injection mold with their end portions and to overmold the contact carrier with a suitable plastic material, so that not only the respective contact carrier is formed, but also the contact partners arranged in it spaced and electrically insulated from each other.

Regarding the FIG. 3 is still pointed to a possible peculiarity. Here, the at least one contact partner 26 is arranged in the crossing region with the at least one further contact partner 25 in a plane which lies from a plane in which a junction 4 of the contact partners 25, 26 with its associated electrical conductor 21, 22, and / or from a plane in which a plug-in region 5 of the contact partners 25, 26 is different. As a result, flat contact partners, in particular with a rectangular cross-section, can be arranged very well and compactly in the contact carrier, which in turn can in turn be configured to be flat.

FIG. 4 Finally, once again shows the connector 1 in the assembled state, it can be seen that the contact partners 25, 26 are arranged in its lower part 24 of the contact carrier 20. Analogously, the contact partners 35, 36 are arranged in their lower part 34 of the contact carrier 30.

With regard to the connector, it can be seen that the electrical conductors 21, 22 are each connected to their own contact point 25, 26 at their own connection point 4. The same applies to the contact partners 35, 36, which are connected to their electrical conductors 31, 32. In this case, the contact carrier 20 is formed by the upper part 23 and the lower part 24, wherein between these two parts 23, 24, the at least two contact partners 25, 26 and in the region of the connection points of the end portion of the at least two electrical conductors 21, 22 are inserted. The corresponding connector 3 may be the same, but it does not have to.

The reference numeral 5 finally a plug-in area is referred to, in which the mutually facing geometries of the contact partners 25, 26 electrically connected to the Contact geometries of the contact partners 35, 36 are connected in the assembled state. It goes without saying that both the geometry of the contact partners and the contacting geometries in the plug-in region 5 are exemplary and other embodiments can be selected. For example, it is not necessarily required that the contact partners have a rectangular cross-section (as shown), but that square, round, oval or similar cross-sections are conceivable.

According to the invention, it is thus important that the twisting of the two electrical conductors 21, 22 (or 31, 32) is continued in the axial course of the connected contact partners. Looking at the FIG. 4 this twisting does not occur completely, in particular in the region of the connection point 4, but the connection point 4 and adjacent areas can also be designed such that the stranding, for example of the one electrical conductor 21, merges seamlessly into the connected contact partner 25 independently of the course of the twisting , The same also applies to the plug-in region 5 and the course of the contact partners 35, 36 inserted there with regard to the further course over the connection point 4 into the electrical conductors 31, 32.

While in the FIGS. 1 to 4 only one pair of electrical conductors 21, 22 and 31, 32 is shown, it is of course also conceivable to use more pairs of such electrical conductors with connected contact partners in the respective contact carrier. In such a case, the cable would, as shown, not only a two-pole cable, but it would also four-pin, six-pin, etc. improved cable in which the corresponding contact partners in the contact carrier of their connectors also twisted at its axial course (At least once crossing) formed extending and spaced from each other.

Although not shown in the figures, it is conceivable that the contact carrier 20 has a shield, which is electrically connected to a shield of a cable to which the connector 2 is arranged. In order for a shield against external influences not only in the area of the cable, but also in the area of the connector 2 is given. The same may or may not apply to the connector 3.

In addition, the invention relates, in particular based on the embodiment of the FIGS. 1 to 4 , a cable set with a connector 2 and a cable with at least two electrical conductors 21, 22 twisted together, wherein in each case an electrical conductor 21, 22 is electrically contacted at an associated contact partner 25, 26 and the at least two contact partners 25, 26 in one Contact carrier 20 of the connector 2 are arranged, wherein the at least two contact partners 25, 26 are at least once crossing in their axial course at a distance from each other in the contact carrier 20 of the connector 2 are arranged. The cable set thus consists of connectors and cables, in particular a twisted pair cable. Twisted-pair cables contain pairs of electrical conductors (pairs of wires), each consisting of two twisted pairs of individual wires. A core (an electrical conductor) is for example a plastic-insulated copper conductor, for installation / installation cables a rigid core (wire) with a standard diameter of 0.4 mm or 0.6 mm. Accordingly, the standard designation of a typical twisted-pair cable is 4 × 2 × 0.4 or 4 × 2 × 0.6 (4 → number of stranding elements, 2 → number of cores per stranding element, 0.6 → diameter of a core in mm ). For flexible patch cables, for example, a strand with a conventional cross section of 0.27 to 0.33 mm ² used. Often the strength of the copper conductor is also given in AWG (American Wire Gauge), with the usual sizes ranging from AWG 27 to AWG 22 (the smaller the AWG number, the thicker the conductor). A pair means that each pair of wires are twisted into a pair, with several pairs of wires in the cable are twisted together. Conductor bundle or soul refers to the stranded (often four) pairs in the cable. With more than one wire pair, the lay lengths are chosen differently to reduce crosstalk. A cable sheath surrounds the soul and usually consists of a plastic mesh and a smooth cover over it. Used material is often PVC or halogen-free material such as PE or aramid. A shield is formed by a metallic sheath of individual pairs of wires and / or the soul. The screen consists of metal foil, metallized plastic film, wire mesh or combinations thereof.

In the following, the invention will be described again in other words.

The invention relates to a device for data transmission via cable, wherein two cables are connected to one another via a plug connection, consisting of a plug connector and a mating connector, for applications in high-frequency engineering.

For the transmission of energy via lines, the electromagnetic compatibility, which describes disturbing influences, does not matter. However, this electromagnetic compatibility plays a very important role in higher-frequency applications, since the data transmitted via the line can transmit interference signals to the environment and / or interference from the environment can be radiated into the line. This is disadvantageous, so that the emission of interfering signals from the Line out and / or the irradiation of interference in the line must be prevented as effectively as possible.

For this purpose, lines have already become known, which consist of an electrical conductor or a plurality of electrical conductors which are surrounded by a shield, for example a shielding braid, a shielding foil or the like. An example of such a line is a coaxial line. However, there are applications for which such type of lines can not be used. For certain applications, so-called stranded or twisted cables are used, which are also called twisted pair cables. In these lines, two electrical conductors are twisted together (stranded) to ensure the desired strength in electromagnetic compatibility. For in the transmission of high-frequency signals, the transferable quality and data rate among other things of the achievable shielding or electromagnetic compatibility (also called Störstrahlfestigkeit) dependent. In order to realize this EMC compatibility, as stated above, the two substantially parallel electrical conductors of the line are twisted together in their axial course.

Also known in the prior art are plug-in connections, formed from a plug connector and a mating plug connector, which are arranged at the end of such a twisted line. However, in the area of the plug connection, EMC problems arise here, since the contact partners within the plug connection, that is to say within the plug connector on the one hand, and the mating plug connector, on the other hand, are straight. This leads to an EMC interference, since the contact partners are formed in parallel within the connector on a certain length and thus untwisted. The In turn, disadvantageously means that in this area of the rectilinear contact partner an interference in this connector and / or a transmission of interference from this connector out is possible.

The invention is therefore based on the object to improve a connector with respect to the EMC resistance.

This object is achieved in that the contact partners within the connector and / or the mating connector over their essential length of the twist of the cable are designed according to geometric. Thus, the twisting (stranding) of the electrical conductor of the line in the direction of the contact partners is continued in an advantageous manner, so that only a smallest possible part of the contact partners are approximately rectilinear, namely in the area where the end of the contact partner of the connector with can be plugged together the end of the contact partner of the mating connector. Ideally, the ends of the contact partners, which are inserted into each other, are shaped so that they simulate the course of the twist of the electrical conductors of the line.

As a result, the lay length interruption in the region of the plug connection and also in the connection region between the electrical conductors of the line and the contact partners of the plug connection is minimized as far as possible in an advantageous manner. In this case, ideally, due to the shape of the contact partners, no break length interruption takes place at all.

Due to the specially shaped contact partner of connector and / or mating connector is in other words the lay length of the electrical conductors The line adjusted and prevented by this embodiment of the connector or in particular the contact partner of connectors and mating connector parallel cores or parallel running contact partners and thus unshielded areas in the axial line course. This also results in the area of the connector in an advantageous manner, a continuous shield, so that the EMC strength is not only, as already known, significantly improved in the course of the lines, but also in the region of the connector.

The figures show an embodiment in which electrical conductors of a respective line are connected to contact partners. This can be done for example by soldering, crimping or the like. In order to form a plug-in connection, the contact partners (referred to therein as contact parts) and possibly also the end region of each electrical conductor are inserted into a housing of the connector or of the mating connector. The housing is in the embodiment shown in two parts (lower part as a contact carrier and upper part designed as a lid), but may also be more than two parts or in one piece (for example, as a molded housing). Overall, this results in a connector that consists of the connector and the mating connector, which are composed of a continuous shielded connector and also form a continuous shielded cable routing.

The embodiment of the housing of the connector and the contact partner in the embodiment is only an example and is illustrative, but the invention is not limited to the geometries shown.

LIST OF REFERENCE NUMBERS

1.

connector

Second

First connector

Third

Second connector

20th

contact support

21st

Electrical conductor

22nd

Electrical conductor

23rd

top

24th

lower part

25th

Contact partner

26th

Contact partner

30th

contact support

31st

Electrical conductor

32nd

Electrical conductor

33rd

top

34th

lower part

35th

Contact partner

36th

Contact partner

4th

junction

5th

plug-in region

Claims (10)

Connector (2) for a connector (1) for high-frequency applications, wherein the connector (1) at least two contact partners (25, 26) which are arranged in a contact carrier (20) of the connector (1), characterized in that the at least two contact partners (25, 26) are at least once crossing in their axial course spaced from each other in the contact carrier (20) of the connector (2) are arranged. Connector (2) according to claim 1, characterized in that the at least two contact partners (25, 26) in its axial course just once crossing spaced from each other in the contact carrier (20) of the connector (2) are arranged. Connector (2) according to claim 1 or 2, characterized in that the contact carrier (20) by an upper part (23) and a lower part (24) is formed, between which the at least two contact partners (25, 26) and the end portion of at least two electrical conductors (21, 22) are inserted. Connector (2) according to claim 1 or 2, characterized in that the contact carrier (20) is formed as encapsulation, of which the at least two contact partners (25, 26) and the end region of the at least two electrical conductors (21, 22) are surrounded , Connector (2) according to one of the preceding claims, characterized in that the contact carrier (20) has a shield which is electrically connected to a shield of a cable to which the connector (2) is arranged. Connector (2) according to any one of the preceding claims, characterized in that the at least one contact partner (26) in the crossing region with the at least one further contact partner (25) is arranged in a plane which extends from a plane in which a connection point (4 ) of the contact partner (25, 26) with its associated electrical conductor (21, 22) is located, and / or from a plane in which a plug-in region (5) of the contact partners (25, 26) is different. Cable set with a connector (2) and with a cable with at least two electrical conductors (21, 22) twisted together, wherein in each case an electrical conductor (21, 22) is electrically contacted at an associated contact partner (25, 26) and the at least two Contact partners (25, 26) in a contact carrier (20) of the connector (2) are arranged, characterized in that the at least two contact partners (25, 26) at least once crossing each other in their axial course spaced from each other in the contact carrier (20) of Connector (2) are arranged. Cable set according to claim 7, characterized in that the contact carrier (20) of an upper part (23) and a lower part (24) is formed, between which the at least two contact partners (25, 26) and the end portion of the at least two electrical conductors (21 , 22) are inserted. Cable set according to claim 7, characterized in that the contact carrier (20) is formed as encapsulation, of which the at least two contact partners (25, 26) and the end region of the at least two electrical conductors (21, 22) are surrounded. Cable set according to claim 7, 8 or 9, characterized in that the cable is a twisted pair cable.

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