CONTACT SYSTEM FOR CONTACTING A CABLE SHIELDING IN A DISTRIBUTION HOUSING

Description

AREA OF INVENTION

[0001] The invention relates to a contact system for electrically contacting a shield of an electrically conductive cable in a distribution housing, comprising A distribution housing with at least one cable entry for the insertion and / or passage of an electrically conductive cable into an interior of the distribution housing, wherein at least one contact point is arranged in the interior of the housing; at least one electrically conductive cable with an electrical inner conductor, a primary insulation surrounding the electrical inner conductor, a secondary insulation surrounding the primary insulation, and with a shield, which shield encloses the electrical inner conductor and is arranged running between the primary insulation and the secondary insulation of the electrically conductive cable;and at least one contact element arranged on the primary insulation of the at least one electrically conductive cable, the contact element comprising an inner sleeve, wherein the inner sleeve is positioned in a contact position between the primary insulation and the shielding, and a first contact surface of the inner sleeve contacts the shielding of the electrically conductive cable. STATE OF THE ART

[0002] Electrical cables whose inner conductors carry high voltages, such as those used in electric or hybrid vehicles as high-voltage cables to supply power to an electric drive motor, require electrical shielding to prevent interference with nearby electrical or electronic components. The term "high voltage" typically refers to a voltage range of approximately 300 V to 800 V. Such high-voltage cables connect, for example, a power or voltage source, particularly a battery or generator, to a load such as an electric drive motor.

[0003] Shielding can also serve to protect the inner conductor against external electrical and / or magnetic interference. For shielding purposes, a braided shield, consisting of numerous strands of an electrically conductive material, is typically used to encase the inner conductor. This braided shield is usually located within a cable jacket and is positioned between a primary insulation layer, also called the inner jacket, which lies between the inner conductor and the braided shield, and a secondary insulation layer, also called the outer jacket or cable jacket, which surrounds the braided shield. To enhance the shielding effectiveness of the braided shield, a shielding foil, usually a plastic-coated aluminum foil, can be added either between the primary insulation and the braided shield or between the braided shield and the secondary insulation.This shielding foil does not transmit any significant currents and is usually not connected to the shielding braid when the braid is contacted, but is usually cut off when the shielding braid is exposed.

[0004] To ensure the shielding of the inner conductor and the equipotential bonding of the shield braid, it is necessary that the shield braid can be connected to ground at the ends of the electrical cable. For this purpose, at least one contact element is usually provided at each end of the cable, which is electrically connected to the shield braid and can be connected to ground.

[0005] Known methods for connecting a copper braid to a contact element, as disclosed, for example, in DE 10 2015 004 485 B4, are typically implemented by sliding a support sleeve onto the secondary insulation of the cable and folding the exposed braid back over the support sleeve. A contact element is then guided over the support sleeve and the braid resting on it and radially crimped, for example, using a suitable tool. The crimping process clamps the braid between the support sleeve and the contact element. However, these methods require the use of support sleeves or contact elements made of materials with high transverse conductivity, since the braid is only crimped at specific points.

[0006] Besides copper or copper alloys, aluminum or aluminum alloys are also suitable as conductive materials for shielding braids. The latter are used in many applications, such as in the automotive sector for electric vehicles, due to their low mass. However, when aluminum wires made of aluminum or an aluminum alloy are crimped together, these wires are naturally passivated on their surface with a very difficult-to-penetrate oxide layer. Therefore, a common contacting process for a shielding braid in copper technology, using the usual radial crimping, is not suitable for establishing contact between all the aluminum wires of the aluminum shielding braid and the contact element, as the oxide layers formed on the aluminum wires prevent transverse conductivity in the crimped contact areas.Therefore, conventional methods cannot penetrate the oxide layers for all wires of the shield braid. Furthermore, it has been shown that known contacting methods cannot achieve a stable connection under temperature cycling stress in aluminum shield braids.

[0007] FR 2 082 842 A5 discloses a contact system according to the preamble of claim 1.

[0008] To ensure uniform shield contact even with aluminum braided shields, contact systems for contacting an aluminum braided shield with a contact element are known, for example, from EP 3 417 514 B1, EP 3 422 480 B1, and EP 3422 481 B1. In these systems, the braided shield of an electrically conductive cable is clamped in its contact position between an inner sleeve and an outer sleeve of the contact element, thereby establishing contact between the braided shield and the contact element. The contact surfaces of the inner sleeve and the outer sleeve are designed to correspond to each other and, depending on the design, can be shaped, for example, conically, cylindrically, or stepped in the longitudinal direction of the cable to increase the clamping effect on the braided shield clamped between the inner and outer sleeves.

[0009] Where such electrically conductive cables are routed through a housing wall, a gap is created in the shielding. Therefore, the use of so-called EMC cable glands is necessary, which make contact with the shielding where the cable enters the housing. The term "EMC" is the abbreviation for Electromagnetic Compatibility and, according to the EMC Directive 2014 / 30 / EU, refers to the ability of an electrical device to function satisfactorily in its electromagnetic environment without unduly affecting that environment, which also includes other devices. EMC-compliant connectors for the automotive industry are regulated in the German guideline LV215.

[0010] By definition, an enclosure of an electrical installation, such as an electrical or electronic device or a distribution enclosure, is "EMC-tight" if the enclosure in question forms a continuous, uninterrupted electromagnetic shield, allowing other electrical installations, such as devices, distribution enclosures or the like, located in the electromagnetic environment of the installation in question to function satisfactorily and not be disturbed by unwanted electrical or electromagnetic effects.

[0011] The most common and effective measure against electromagnetic interference is a Faraday cage, which is most easily implemented using a metal enclosure. However, to achieve the highest possible EMC tightness or continuous, uninterrupted electromagnetic shielding in a distribution enclosure, it is essential to ensure that any gaps, cracks, or openings—for example, for enclosure covers, connectors, switches, or digital displays—are completely sealed with electromagnetic shielding to guarantee the necessary tightness of the Faraday cage during operation.

[0012] In distribution enclosures, especially those with small dimensions, where several shielded cables are usually connected electrically through corresponding openings in the enclosure to a so-called high-voltage header (abbreviated: HV header), i.e., a contact point for high-voltage cables inside the enclosure, conventional EMC cable glands cannot be used, firstly because of their generally inadequate assembly capabilities and secondly because of limited accessibility due to space constraints.

[0013] For example, EP 3 022 806 B1 discloses a device comprising a housing and a device for electrically contacting the shielding of an electrical cable to a housing. In this device, a shielded cable is inserted through a housing opening into a metal housing, and in the assembled state, the cable is secured inside the housing by a double contact clamp with two spaced-apart clamp sections. A first clamp section, in which the cable sheath is clamped, serves as a strain relief section. A second clamp section, in which the shielding of the electrical cable is clamped, serves as the contact section. Depending on the embodiment, the two clamp sections are either screwed onto a support that is part of the metal housing.Or the two clamp sections have clamp-shaped counter-clamps that complete the two clamp sections to form a full ring around the electrical cable to be clamped.

[0014] A disadvantage of this design according to EP 3 022 806 B1 is, at least, that the cable entry or cable support with two separate, spaced-apart brackets acting on the same cable is complex. Furthermore, it is a disadvantage that a gap remains between the housing opening for the cable entry and the first bracket section for strain relief of the cable. This gap must be filled with a separate annular sealing segment with protruding contact tongues in order to somewhat improve the EMC shielding, which is interrupted in this gap of the housing entry.

[0015] However, such distribution housings typically have two or more cable connections. Therefore, for each cable entry or cable, the remaining gap between the housing and the cable must be sealed with a separate sealing segment. This is not only complex and cumbersome during assembly, but also prone to errors. As soon as such a sealing segment shifts in its position within the gap between the housing and the cable, the EMC shielding is compromised. The quality of the shielding in this design thus depends significantly on the quality and EMC tightness of the housing used, in conjunction with the one or more separate sealing segments.The design known from EP 3 022 806 B1 is only of limited use for reliable EMC shielding of the distribution housing, especially when used in an electric or hybrid vehicle that is subject to strong vibrations and shocks during operation. TASK OF INVENTION

[0016] It is therefore an object of the invention to overcome the disadvantages of known contact systems of the prior art and to propose a contact system which enables reliable contacting and clamping of the shielding of an electrically conductive cable in the area of ​​the cable entry into a distribution housing in a simple manner, wherein the EMC shielding should be uninterrupted in the longitudinal direction of the cable in particular in the area of ​​the cable entry. PRESENTATION OF THE INVENTION

[0017] This problem is solved by a generic contact system according to the invention in that the at least one electrically conductive cable is passed through the at least one cable entry of the distribution housing and electrically connected to the at least one contact point with a stripped, contacted cable end of its electrical inner conductor, wherein the at least one contact element is arranged in the interior of the housing between the cable entry and the contact point, and wherein a, preferably two-part, shield housing with a lower shield housing shell and with an upper shield housing shell is arranged inside the distribution housing, and furthermore, at least one clamping element is arranged inside the distribution housing, which clamping element comprises a first clamping jaw and a second clamping jaw for clamping the at least one contact element and end sections of the shield housing shells, wherein the shield housing encloses the contact point and the cable end of the electrically conductive cable attached thereto,and wherein an end section of the lower shield housing shell and an end section of the upper shield housing shell are each clamped between the at least one contact element and the clamping jaws of the at least one clamping element, such that the shield housing is in contact with the contact element or the shielding and the contact element or the shielding is pressed against it at least partially enclosing it, thereby making at least indirect contact with the shielding of the at least one electrically conductive cable.

[0018] The contact system according to the invention offers the advantage that reliable EMC shielding is ensured, particularly in the area of ​​the cable entry, without interruption in the longitudinal direction of the at least one electrically conductive cable. The distribution housing essentially serves to hold the shield housing, the at least one clamping element, and the at least one contact point, which are arranged within the distribution housing. The distribution housing itself can be made of any material and, in itself, need not be liquid-tight or provide EMC shielding. For example, the distribution housing can be designed as a grid or frame construction that is at least partially open, surrounding the components located inside it, in particular the shield housing, at least one or more clamping elements, and at least one contact point enclosed by the shield housing.

[0019] The shielding housing provides EMC shielding and is designed such that, in its installed position, the contact point and the attached contacted cable end of the electrically conductive cable are enclosed by the housing. To ensure continuous, uninterrupted, and EMC-tight shielding even in the area of ​​the at least one cable entry through the housing, end sections of the lower and upper housing shells are clamped between the at least one contact element (which is slid onto the electrically conductive cable in contact position and makes contact with its shielding) and the two clamping jaws of the at least one clamping element. The end sections are shaped to complement the contour sections of the at least one contact element, which at least partially surrounds the end sections of the respective housing shells.In the installed position, the shield housing with its end sections rests against the contact element or the shielding in such a way that the shield housing at least partially encloses the contact element or the shielding and is pressed against the contact element or the shielding by the clamping element.

[0020] According to the invention, the at least one contact element, which is arranged on the primary insulation of the electrically conductive cable, comprises an inner sleeve, wherein the inner sleeve is positioned in the contact position between the primary insulation and the shielding. The inner sleeve has a first contact surface on its outer surface, which, in the contact position, makes contact with the shielding of the electrically conductive cable.

[0021] Depending on the design of the contact element, the following distinctions can be made: In a first embodiment of the contact element, it is, for example, formed as a single piece and serves as the inner sleeve. In this case, the shielding of the cable in question is clamped in the contact position between the inner sleeve and the shield housing. In its installed position, the shielding is thus in direct electrically conductive contact with both the inner sleeve, which is the contact element, and the shield housing. The inner sleeve acts as a support sleeve to support the electrical conductor, including its primary insulation, located within a cable gland inside the inner sleeve, and to prevent damage to it. This support is achieved when the shield housing rests, at least partially, against the contact element (the inner sleeve) and / or the shielding, and is pressed against the contact element and / or the shielding by the clamping element.In a second embodiment of the contact element, for example, the contact element is designed in at least two parts and comprises, in addition to the inner sleeve, an outer sleeve, wherein the inner sleeve can be inserted, at least partially, into the outer sleeve. In this case, the shielding of the cable in question is advantageously guided in the contact position with the outer sleeve and the inner sleeve of the contact element arranged therein, such that the shielding of the electrically conductive cable is clamped between the inner sleeve and the outer sleeve and is in contact with the contact element. In this case, the shield housing rests against the contact element in its installed position, in particular against the outer sleeve of the contact element, and is pressed against the contact element by the clamping element. The shielding is thus in direct electrically conductive contact with the inner and outer sleeves of the contact element. The shield housing contacts the shielding, at least indirectly.

[0022] In the first-mentioned embodiment of the contact element, for example, as a one-piece contact element in the form of an inner sleeve or support sleeve, it can happen, particularly with a braided shield, that the inner sleeve is not completely enclosed by the shield or braid. In the contact position, the shield housing therefore rests partially against the contact element and partially against the shield. According to this embodiment, the clamping jaws of the clamping element press the shield housing against both the contact element (in the form of the inner sleeve) and the shield, with the shield housing at least partially enclosing the contact element and / or the shield. This establishes at least an indirect electrically conductive contact between the shield of the electrically conductive cable in question and the shield housing.

[0023] In the case of an implementation of a contact system according to the invention with two or more electrically conductive cables, the continuous, uninterrupted or EMC-tight shielding in the area of ​​the at least two cable penetrations can advantageously be achieved by arranging a separate contact element, comprising an inner sleeve, on each electrically conductive cable. Each contact element is arranged on the primary insulation of the respective electrically conductive cable or is pushed onto the respective primary insulation.

[0024] Further advantages and effects of the invention as well as advantageous embodiments can be found in the dependent claims and the description.

[0025] The positional designations for components or parts of a contact system used here and in the following, such as the terms "top," "bottom," "above," "below," "front," "back," "side," "inside," "outside," "horizontal," "vertical," "axial," "radial," and the like, serve primarily to improve understanding of the invention, particularly in conjunction with the following drawings. The positional designations used may refer to specific positions of individual components in their installed position within a contact system or to specific views in the figures. In any case, such positional designations are familiar to those skilled in the art.

[0026] In a particularly easy-to-use embodiment of the invention, it can be provided in a contact system that at least one contact element is the inner sleeve.

[0027] As previously mentioned, in this embodiment of the contact system according to the invention, the contact element is formed in one piece, which offers advantages during the assembly of the electrical cable to be connected. In this case, the shielding of the cable in question is clamped in the contact position between the inner sleeve and the shield housing. In the installed position, the shielding is thus in direct electrically conductive contact with both the inner sleeve, i.e., with the one-piece contact element, and with the shield housing. The inner sleeve acts as a support sleeve to support the electrical inner conductor, including its primary insulation, arranged in a cable gland within the inner sleeve, and to prevent damage to it, when the shield housing rests at least partially against the inner sleeve and / or the shielding and is pressed against the inner sleeve and / or the shielding by the clamping element.

[0028] In an alternative embodiment of the invention, in a contact system the at least one contact element can further comprise an outer sleeve, wherein in the contact position the inner sleeve is at least partially arranged inside the outer sleeve, wherein the outer sleeve has a second contact surface, and wherein the first contact surface of the inner sleeve and the second contact surface of the outer sleeve are designed such that the shielding of the electrically conductive cable is clamped in a contact position between the inner sleeve and the outer sleeve and is contacted with the contact element, wherein the shielding housing is in contact with the contact element, preferably with the outer sleeve of the contact element, and the contact element is pressed on at least partially enclosing it, thereby at least indirectly contacting the shielding of the at least one electrically conductive cable.

[0029] Preferably, in the contact position, the shield housing rests directly against the contact element, at least partially, thereby establishing a direct electrically conductive contact between the shield housing and the contact element, in particular the outer sleeve of the contact element.

[0030] Such a contact element, comprising an outer sleeve and an inner sleeve that can be inserted or slid into the outer sleeve, offers the advantage that the shielding of the electrically conductive cable is clamped securely in its contact position between the inner and outer sleeves of the contact element, thereby establishing contact between the shielding, for example in the form of a braided shield, and the contact element. The contact surfaces of the inner and outer sleeves are designed to correspond to each other and, depending on the design, can be shaped in the longitudinal direction of the cable, for example, conically, cylindrically, or with steps, in order to increase the clamping effect on the braided shielding clamped between the inner and outer sleeves.

[0031] In the case of an embodiment of a contact system according to the invention with two or more electrically conductive cables, the continuous, uninterrupted shielding in the area of ​​the at least two cable glands can advantageously be provided such that a separate contact element comprising an outer sleeve and an inner sleeve that can be inserted into the outer sleeve is arranged on each electrically conductive cable. Each contact element is arranged on the primary insulation of the respective electrically conductive cable or slid onto the respective primary insulation, wherein the shielding of the respective cable is clamped in a contact position between the inner sleeve and the outer sleeve of the respective contact element and is in electrically conductive contact with this contact element. Depending on the arrangement of the cables in relation to the distribution housing or...The contact elements of two or more electrically conductive cables can be clamped to the shield housing either with a common clamping element or with separate clamping elements at corresponding end sections of the shield housing.

[0032] In a further preferred embodiment of the invention, it may be advantageous if, in a contact system, at least one clamping element is positioned in its installation position in a housing guide inside the distributor housing.

[0033] Pre-positioning at least one clamping element in a housing guide of the distribution housing simplifies the installation of at least one electrically conductive cable. Positioning the clamping element relative to the distribution housing also determines the position of the contact element, which is located on the respective electrically conductive cable and, in its installed position, is clamped by the clamping element to corresponding end sections of the shield housing.

[0034] Particularly in the case of an implementation of a contact system according to the invention with several electrically conductive cables clamped in two or more clamping elements, this design offers advantages during assembly. Advantageously, each individual clamping element is pre-positioned in a housing guide within the distribution housing. This significantly simplifies the assembly of the electrically conductive cables and improves the quality of the EMC shielding. In particular, the positioning of the individual contact elements along the respective cables is facilitated, so that the relevant contact elements can each be clamped in a specific clamping element together with end sections of the shield housing.

[0035] In order to achieve an improved clamping effect between the shield housing and the respective contact element with the at least one clamping element, in a further embodiment of the contact system according to the invention the at least one clamping element can be designed such that the two clamping jaws can be connected to each other in a form-fitting or force-fitting manner, preferably by means of screw connections, plug connections or snap connections.

[0036] As positive-locking connecting means, known snap-fit ​​or plug-in connections can be used, arranged on one or both of the clamping jaws to positively connect these clamping jaws to each other to form a clamping element. Preferably, such positive-locking connecting means can be designed to be releasable so that the clamping jaws of an assembled clamping element can be opened again without damage if necessary.

[0037] Conventional screw or clamp connections can serve as force-fit fasteners, allowing the clamping jaws to be connected to form a clamping element. Screw connections offer the advantage that, depending on the design, the clamping jaws can be tightened with a standard tool such as a screwdriver or wrench, applying controlled force. If necessary, such screwed-together clamping jaws of a clamping element can be opened again without damage.

[0038] Naturally, within the scope of the invention, in a contact system with two or more clamping elements, all clamping elements can be connected by positive locking or force locking, preferably by means of screw connections, plug connections or snap-fit ​​connections. For example, the two or more clamping elements can each have screw connections with which the respective clamping jaws can be connected or screwed together.

[0039] In order to enable a particularly uniform pressure on the end sections of the shield housing shells and the contact element clamped within the end sections using a clamping element, it may be advantageous if, in a contact system according to the invention, the first clamping jaw and the second clamping jaw each have at least one recess, wherein the at least two recesses are each shaped complementarily to the end sections of the shield housing shells of the shield housing.

[0040] In an advantageous further development of the invention, in a contact system the shield housing can have an EMC sealing edge, preferably circumferential, between the lower shield housing shell and the upper shield housing shell, and form a continuous, uninterrupted electromagnetic shield.

[0041] To ensure further improved EMC shielding of the shield housing, the EMC sealing edge can, for example, be designed as a crimp on the shielding plate, so that the two shield housing shells lie flush against each other in the installed position, thus forming a continuous, uninterrupted electromagnetic shield. Preferably, the EMC sealing edge is designed to run continuously, so that the crimp of the shield housing extends along the entire complementary shaped edge sections of the lower and upper shield housing shells, and the two shield housing shells can be joined or plugged together flush at their edge sections. In the installed position, the lower and upper shield housing shells enclose the interior of the shield housing, forming a continuous, uninterrupted electromagnetic shield.

[0042] In a further preferred embodiment, the shield housing of a contact system according to the invention can be made of an electrically conductive material.

[0043] An electrically conductive shield housing, made, for example, of sheet metal (i.e., a rolled metal product), is robust and surrounds at least one contact point and the attached cables with uninterrupted EMC shielding.

[0044] In order to provide a particularly robust, weather-resistant contact system according to the invention, it may be advantageous if the distributor housing comprises a housing base and a housing cover, wherein the housing base and the housing cover tightly enclose the housing interior, preferably with a housing seal arranged between the housing base and the housing cover.

[0045] A sealed, liquid-tight distribution housing provides protection against leaks. In this design, the distribution housing can also be used outdoors or in locations exposed to the elements. The distribution housing is designed to be as compact as possible to minimize the size of any housing seal that may be used.

[0046] In order to provide a particularly flexible contact system within the scope of the invention, it may be advantageous if the distributor housing is made of plastic.

[0047] A plastic distribution housing offers numerous advantages: It is lightweight, can be dimensionally stable and durable with appropriate shaping and the selection of a suitable impact-resistant plastic material, and provides a high level of protection against leaks, i.e., liquids that should not penetrate the distribution housing from the outside. For high-voltage applications, for example, polybutylene terephthalate (PBT) plastic is used. This plastic is characterized by low water absorption, high strength and stiffness, as well as rapid cooling properties for injection molding.

[0048] While the plastic distribution housing provides protection against weather and leaks, the shielding enclosure located inside it provides EMC shielding. The outer plastic distribution housing should ideally be free of electrical voltage. If necessary, such a plastic distribution housing should therefore be connected to ground via equipotential bonding to protect against unwanted electrostatic discharge. A contact system with such a "double" housing – an outer plastic distribution housing and an inner shielding enclosure – offers improved protection against leaks as well as against electrical and electromagnetic interference.

[0049] Alternatively, for certain applications it may be advantageous if the distributor housing of a contact system according to the invention is made of metal or a metal alloy.

[0050] Especially in high-voltage systems, such as battery-powered electric vehicles, equipotential bonding is a crucial element of safety. All high-voltage components, including the power electronics and the high-voltage battery housing, as well as the vehicle ground, are conductively connected to each other via equipotential bonding.

[0051] In a further advantageous embodiment of the invention, in a contact system, at least one electrically conductive cable can be fixed to the at least one cable entry into the distribution housing by means of a fixing element, optionally using a cable tie.

[0052] Such a fixing element, possibly in conjunction with a cable tie, serves to relieve strain on the connected cable. Depending on the design, a fixing element can, for example, be a cable gland. Tensile forces that may act on the electrically conductive cable in the axial longitudinal direction are transferred from the fixing element into the distribution housing. This advantageously prevents undesirable tensile loads in the longitudinal direction of the cable for the components and parts arranged inside the distribution housing, in particular for the clamping element with the shield housing and the contact element.

[0053] In order to achieve a particularly effective seal of the distribution housing in the area of ​​the at least one cable entry against liquid ingress or leakage, in a contact system according to the invention the at least one cable entry into the distribution housing can be sealed with a cable seal and / or with a fixing element.

[0054] For example, a liquid-tight cable seal can be located inside a fixing element, protected from external elements. For instance, a cable gland with an internal cable seal can be used as the fixing element. In such a case, the fixing element can serve not only for strain relief of the connected cable in accordance with DIN EN 62444, but also for a liquid-tight cable seal at the cable entry into the distribution box.

[0055] A snap-in fixing element can also be used for cable sealing. For example, such a snap-in fixing element can include a seal that is held in position within the fixing element.

[0056] In order to provide a particularly flexible contact system for two or more electrically conductive cables within the scope of the invention, it may be advantageous if, in addition to a first cable entry, at least a second or further cable entry is arranged in the distribution housing on the same side of the housing and / or on a side of the distribution housing different from the first cable entry, wherein the first cable entry and the at least one second or further cable entry are optionally provided either with a common clamping element or each with separate clamping elements.

[0057] In this embodiment according to the invention, two or more cable entries can be provided on the same side of the distribution housing. In this case, the two or more cable entries on the same side of the housing can be equipped with a continuous, common clamping element, wherein the clamping element has a corresponding number of recesses. In the case of cable entries on opposite or different sides of the housing, separate clamping elements are required in any case, i.e., at least one clamping element per side of the housing.

[0058] In a further embodiment of the invention, the first and second clamping jaws of the at least one clamping element in a contact system can be made of metal or a metal alloy.

[0059] This design offers particular advantages when combined with screw-on clamping jaws. The metal clamping jaws, especially when screwed together, allow for very high clamping forces without deformation. This enables the contact elements on the respective cables to be clamped to the shield housing with a high clamping force.

[0060] In an alternative embodiment of the invention, the first and second clamping jaws of at least one clamping element in a contact system can be made of plastic.

[0061] In this design, one or more clamping elements can be manufactured particularly cost-effectively and with low overall weight. Depending on the requirements for the clamping jaws, they can be equipped with mechanically actuated connections such as locking hooks, snap connections, or the like. In such a case, the clamping jaws can be fixed together in their installed position by simply pressing them together, thereby clamping the contact elements arranged between them to the shield housing.

[0062] Further advantages of the invention will become apparent from the following description of the figures. BRIEF DESCRIPTION OF THE FIGURES

[0063] The invention will now be explained in more detail using exemplary embodiments. The schematic drawings are exemplary and are intended to illustrate the inventive concept, but in no way to restrict or even exhaustively represent it.

[0064] This shows: Fig. 1 a first embodiment of a contact system according to the invention in a sectional view along conductor axes of the connected electrically conductive cables; Fig. 2 in an enlarged detail view of Fig. 1 a cable feedthrough of the contact system shown; Fig. 3 a clamping element of a contact system according to the invention in a sectional view transverse to the conductor axis of the connected electrically conductive cables; Fig. 4 an enlarged detail view of Fig. 3 ; Fig. 5 a sectional view of a two-part contact element, which is arranged in a contact position on an electrically conductive cable; Fig. 6A a sectional view of a one-piece contact element; Fig. 6B a sectional view of the in Fig. 5 shown contact element; Fig. 7 an axonometric view of the in Fig. 5 arrangement shown with the two-part contact element in an intermediate position; Fig. 8 a second embodiment of a contact system according to the invention in an axonometric view obliquely from above with a partially cut-out distributor housing; Fig. 9 another axonometric view of the in Fig. 8 The contact system shown is viewed obliquely from the side. WAYS TO IMPLEMENT THE INVENTION

[0065] Fig. 1 shows the basic structure of a contact system 1 according to the invention for electrical contacting at least one electrically conductive cable 10 in a distribution housing.

[0066] Fig. 2 shows in an enlarged detail view of Fig. 1 a cable gland of the contact system shown 1. The following description applies equally to the Figures 1 and 2 .

[0067] In Fig. 1are at least two electrically conductive cables 10, which are arranged on opposite sides of a distribution housing 30. Each electrically conductive cable 10 has in its longitudinal direction 11, which in Fig. 2The cable 10 is symbolized by a double arrow 11 and contains an electrical inner conductor 12 extending in the longitudinal direction 11. This inner conductor forms the core of the cable 10 and defines a conductor axis 13 that runs in a straight line in the illustrations. The electrical inner conductor 12 has a conductor cross-section 14. The electrical inner conductor 12 is surrounded by primary insulation 15. The primary insulation 15, which forms the inner insulating sheath of the cable 10, is enclosed by a shield 16, which here, for example, is designed as a braided shield 17. The braided shield 17 shown here consists, for example, of a multitude of strands made of an electrically conductive material. The shield 16 encloses the electrical inner conductor 12 and is arranged between the primary insulation 15 and a secondary insulation 18 of the electrically conductive cable 10. The secondary insulation 18 forms the outer insulating sheath of the cable 10.

[0068] Each of the two in Fig. 1 The electrically conductive cable 10 shown has a so-called contacted cable end 19 at each of its free ends, at which the respective cable 10 is electrically connected to a contact point, for example a connector interface. The corresponding electrical inner conductor 12 is exposed or stripped at each contacted cable end 19.

[0069] Each electrically conductive cable 10 has a contact element 20 arranged on the primary insulation 15 of the respective cable 10. The contact element 20 is located on the primary insulation 15 of the respective cable 10. Figures 1 and 2The contact elements 20 shown each comprise an inner sleeve 21, which serves as a support sleeve to protect the electrical inner conductor 12, guided in a cable gland within the inner sleeve 21, along with the surrounding primary insulation 15, from damage or deformation. The inner sleeve 21 is positioned in a contact position between the primary insulation 15 and the shield 16 and has a first contact surface 22 on its outer surface, with which the shield 16 of the electrically conductive cable 10 is contacted in the contact position.

[0070] The in the Figures 1 and 2The contact elements 20 shown are each constructed in two parts and, in addition to the inner sleeve 21, also have a complementary outer sleeve 23. In one contact position, the inner sleeve 21 is at least partially arranged within the outer sleeve 23, the outer sleeve 23 having a second contact surface 24. The first contact surface 22 of the inner sleeve 21 and the second contact surface 24 of the outer sleeve 23 are designed in such a two-part contact element 20 such that the shielding 16 of the electrically conductive cable 10 is clamped between the inner sleeve 21 and the outer sleeve 23 in one contact position and is in contact with the contact element 20.

[0071] Fig. 5 Figure 1 shows a sectional view of such a two-part contact element 20, which is arranged in a contact position 29 on an electrically conductive cable 10.

[0072] In the Figures 6A and 6BDifferent versions of contact elements 20 are shown in sectional views.

[0073] Fig. 6AFigure 1 shows a one-piece contact element 20 in the form of an inner sleeve 21 or support sleeve. The inner sleeve 21 is shaped such that it can be positioned in a contact position on the primary insulation 15 coaxially to a conductor axis 13 of an electrically conductive cable 10 (indicated here only by dashed lines), specifically between the primary insulation 15 and the shield 16, 17 of the cable 10. On its outer surface, the inner sleeve 21 has a first contact surface 22, which, in the contact position, makes contact with the shield 16, 17 of the corresponding electrically conductive cable 10. In order to be able to insert the inner sleeve 21 between the primary insulation 15 and the shielding 16,17 of the cable 10 in the direction of arrow 100 without damaging the shielding 16,17, a front edge section of the inner sleeve 21 seen in the direction of arrow 100 is chamfered, wherein the first contact surface 22 has a bend edge 25 on this front edge section.Apart from this chamfered edge section, the first contact surface 22 of the inner sleeve 21 runs essentially parallel to the inside of the inner sleeve 21, which serves for the cable entry 28. Or in other words, with the exception of the chamfered edge section, the material thickness of the inner sleeve 21 is essentially the same along the conductor axis 13 of the cable 10.

[0074] Fig. 6B This shows in Fig. 5 The two-part contact element 20 shown comprises an inner sleeve 21 and a complementary outer sleeve 23. This two-part contact element 20 corresponds to the one described in the Figures 1 and 2The contact elements 20 shown. The inner sleeve 21 is shaped such that it can be positioned coaxially 13 in a contact position on the primary insulation 15 of an electrically conductive cable 10 (indicated here only by dashed lines), specifically between the primary insulation 15 and the shielding 16, 17 of the cable 10. In a contact position 29, the inner sleeve 21 is at least partially arranged inside the outer sleeve 23, the outer sleeve 23 having a second contact surface 24. The first contact surface 22 of the inner sleeve 21 and the second contact surface 24 of the outer sleeve 23 are designed in this two-part contact element 20 such that the shielding 16, 17 of the electrically conductive cable 10 (indicated here by dashed lines) is in contact position 29, as shown in Fig. 5As can be seen, the inner sleeve 21 is clamped between the inner sleeve 21 and the outer sleeve 23 and is in contact with the contact element 20. The contact surfaces 22, 24 of the inner sleeve 21 and the outer sleeve 23 are designed to correspond to each other and, depending on the design, can be, for example, conical, cylindrical, or stepped in the longitudinal direction 11 of the cable to increase the clamping effect on the braided shield 17 of the shield 16 clamped between the inner sleeve 21 and the outer sleeve 23. In order to be able to insert the inner sleeve 21 between the primary insulation 15 and the shield 16, 17 of the cable 10 in the direction of arrow 100 without damaging the shield 16, 17, the first contact surface 22 is tapered in the direction of arrow 100.A front section of the first contact surface 22, viewed in the direction of arrow 100, is more steeply inclined, forming an intermediate kink edge, than a rear section of the first contact surface, viewed in the direction of arrow 100. Position 26 designates a free insertion volume 26 within the outer sleeve 23, which serves to receive an insertable section 27 of the inner sleeve 21. The inner free cross-section of the inner sleeve 27, in turn, serves as a cable entry 28 for the electrical inner conductor 12 together with the primary insulation 15 surrounding it.

[0075] Fig. 7 shows in an axonometric view a with Fig. 5A comparable arrangement with a two-part contact element 20 in an intermediate position. The electrically conductive cable 10 is already prepared to be contacted at its stripped cable end at a contact point. The outer sleeve 23 and the inner sleeve 21 of the contact element 20 must first be inserted in a suitable manner along the conductor axis 13 of the electrically conductive cable 10 into the Fig. 9 The contact position 29 shown is moved so that the shielding 16 of the electrically conductive cable 10 is clamped between the inner sleeve 21 and the outer sleeve 23 and is in contact with the contact element 20.

[0076] Returning to the Figures 1 and 2 The illustrated contact system 1 comprises a distribution housing 30, which here is a distribution housing 30 with a base 31 and a cover 32. The distribution housing 30 has on its Fig. 1The left side of the housing shown has at least one cable input 33 and on its side in Fig. 1 The right side of the housing shown has at least one second cable input 34.

[0077] The cable entries 33, 34 into the distribution housing 30 are each sealed with a cable seal 35. The cable seals 35 with lamellar seals are arranged here within a fixing element 36 and are protected from the outside. For example, snap-in fixing elements or screw-in fixing elements, so-called cable glands, with internal cable seals are used as fixing elements 36 for each connected electrically conductive cable 10. Similarly, screw-in fixing elements, so-called cable glands, can be used to fix the respective cable 10 to the cable entry 33, 34 in the distribution housing 30. The fixing elements 36 serve both to relieve strain on the connected cable 10 and to provide a liquid-tight cable seal for the cable entries 33, 34 into the distribution housing 30.

[0078] The in Fig. 1The illustrated distribution housing 30 is made of plastic and is designed to be liquid-tight, but without EMC shielding. In the closed position, with the cover 32 placed on the lower part 31 of the distribution housing 30, the distribution housing 30 thus encloses a liquid-tight interior 37. To seal the housing parts, the cover 32 can, for example, be screwed to the lower part 31 by means of housing screws 38 and a housing gasket 39 arranged between the cover 32 and the lower part 31.

[0079] Inside the housing 37 of the distribution housing 30, a shielding housing 40 is further provided with a lower shielding housing shell 41 and with an upper shielding housing shell 43.

[0080] Inside the shield housing 40 a contact point 48, for example a plug interface, is arranged to which the at least two electrically conductive cables 10 are connected.

[0081] The shielding housing 40, for example, is made of an electrically conductive metal sheet, provides EMC shielding, and is designed such that, in its installed position, the contact point 48 and the attached contacted cable ends 19 of the electrically conductive cable 10 are enclosed by the shielding housing 40. To ensure continuous, uninterrupted, and EMC-tight shielding even in the area of ​​the cable penetrations 33, 34 through the shielding housing 40, end sections 42 of the lower shielding housing shell 41 and end sections 44 of the upper shielding housing shell 43 are each designed such that, when installed in the Figures 1 and 2The two-part contact elements 20 shown in the illustration are in contact with the contact elements 20 or at least partially enclose the contact elements 20.

[0082] The shielding housing 40 is designed such that a circumferential EMC sealing edge 45 is provided between the lower shielding housing shell 41 and the upper shielding housing shell 43, in order to seal the shielding housing 40 in an EMC-tight manner, i.e., with continuous, uninterrupted electromagnetic shielding. The EMC sealing edge 45 is designed, for example, as a circumferential crimped edge, so that the crimp of the shielding housing 40 extends along the entire complementary shaped edge sections of the lower 41 and the upper 43 shielding housing shells, and the two shielding housing shells 41, 43 can be joined or plugged together flush at their edge sections.For example, a circumferential groove is provided at the edge of the lower shield housing shell 41, into which the complementary shaped edge of the upper shield housing shell 43 can be inserted in a form-fitting manner, so that when the shield housing 40 is closed, there are no gaps, cracks, or openings in the shield housing 40 that could impair the EMC shielding effect of the shield housing 40. In the installed position, the lower and upper shield housing shells 41, 42 seal the interior of the shield housing 40 in an EMC-tight manner.

[0083] Furthermore, at the in Fig. 1 In the illustrated embodiment of the contact system 1, two terminal elements 50 are arranged inside the distributor housing 50.

[0084] A first clamping element 50, which is shown in the left half of the image by Fig. 1The left contact element 20 is shown. The left contact element 20 is located inside the housing 37 between the first cable entry 33 and the contact point 48.

[0085] A second clamping element 50, which is shown in the right half of the image by Fig. 1 The right contact element 20 is shown. The right contact element 20 is located inside the housing 37 between the second cable entry 34 and the contact point 48.

[0086] The two in Fig. 1 The visible contact elements 20 are each positioned such that they are at least partially enclosed by the end sections 42,44 of the shield housing shells 41,43 of the shield housing 40 and their outer sleeves 23 are in contact position 29 on the shield housing 40.

[0087] Each clamping element 50 has a first clamping jaw 51 and a second clamping jaw 52, ​​which are provided for clamping a contact element 20 as well as corresponding end sections 42 of the lower shield housing shell 41 and end sections 44 of the upper shield housing shell 43 of the shield housing 40.

[0088] As in Fig. 3 as well as in the detailed view of Fig. 4As can be seen, which show a common clamping element 50 with two clamping jaws 51, 52 for two adjacent cables 10, the first clamping jaw 51 and the second clamping jaw 52 of each clamping element 50 each have a recess 53, 54 for each cable 10, wherein the recesses 53 in the first clamping jaw 51 and the recesses 54 in the second clamping jaw 52 are each complementary in shape to the end sections 42, 44 of the shield housing shells 41, 43 of the shield housing 40. The two clamping jaws 51, 52 are positively connected to each other by corresponding screw connections 55. Corresponding housing guides 56 within the distribution housing 30 serve to position the clamping elements 50 in their installed position in the distribution housing 30.

[0089] As shown in the detailed view of the average. Fig. 4As can be seen, the clamping sequence within the clamping element 50 is implemented in the two-part contact element 20 shown here: Starting from the bottom and moving upwards, the lower or first clamping jaw 51 is located at the bottom. An end section 42 of the lower shield housing shell 41 rests within the approximately semicircular recess 53 in the first clamping jaw 51, with its outer surface resting against the first clamping jaw 51. An outer sleeve 23 of the contact element 20 rests against the inner surface of the end section 42 of the lower shield housing shell 41, opposite the outer surface. The shielding 16 of the clamped electrically conductive cable 10, for example in the form of a braided shield 17, is located between the outer sleeve 23 and an inner sleeve 21 of the contact element 20.The shield 16 is clamped in contact position 29 between the outer sleeve 23 and the inner sleeve 21 and is in direct electrically conductive contact with the contact element 20. The inner sleeve 21 is positioned between the primary insulation 15 and the shield 16 of the cable 10 in question. The primary insulation and the electrical inner conductor 12 of the cable 10 are located inside the inner sleeve 21.

[0090] Moving upwards from the conductor axis 13 of the cable 10, the sequence of the aforementioned layers or components is thus in reverse order: The inner side of an end section 44 of the upper shield housing shell 43 rests against the upper surface of the outer sleeve 23 of the contact element 20. The upper, second clamping jaw 52 is located on the outer side of the respective end section 44 of the upper shield housing shell 43, opposite the inner side. The end section 44 of the upper shield housing shell 43 is positioned within the approximately semicircular recess 54 of the second clamping jaw 52 and rests against the second clamping jaw 52. In this case, the shield housing 40 rests against the contact element 20 in such a way that it is pressed against it by the two clamping jaws 51, 52 of the clamping element 50 and at least partially encloses the contact element 20. The shield housing 40 makes at least indirect contact with the shielding 16 of the electrically conductive cable 10.

[0091] In the event that instead of the one shown here in the Figures 3 and 4 The two-part contact element 20 illustrated a one-part contact element 20, which, for example, in Fig. 6A As shown, and which consists only of an inner sleeve 21, the following changes in the clamping sequence within the clamping element 50 compared to the sequence described above. Fig. 4Due to the absence of the outer sleeve 23, the shielding 16, 17 of the cable 10 in question is clamped between the inner sleeve 21, acting as the contact element 20, and the corresponding end sections 42, 44 of the lower and upper shield housing shells 41, 43 of the shield housing 40. The shield housing 40 is thus pressed against the contact element 20 in the form of the inner sleeve 21 and / or against the shielding 16 of the cable 10 in question. In this case, the shielding 16 of the cable 10 is at least indirectly contacted by the shield housing 40, but preferably also at least partially directly contacted.

[0092] In summary, the distribution housing 30 essentially serves to hold the shield housing 40, the at least one clamping element 50, and the at least one contact point 48, which are arranged inside the distribution housing 30. The distribution housing 30 itself can be made of any material and does not, in itself, need to be liquid-tight or provide EMC shielding. The shield housing 40 provides the EMC shielding.

[0093] Fig. 8 relates to a second embodiment of a contact system 1 according to the invention and shows, obliquely from above, a partially cut-out distributor housing 30 with the cover 32 removed, so that the view into the housing interior 37 is revealed.

[0094] Fig. 9 This shows in Fig. 8 The contact system is illustrated from an oblique angle. The following description concerns the two... Figures 8 and 9Likewise, the same reference symbols as in the previous figures are used for functionally equivalent parts and components.

[0095] The distributor housing 30, for example, is made of plastic and is designed to be liquid-tight. For this purpose, a housing seal 39 is provided on the lower part 31, and the cover 32 of the distributor housing 30 (not shown here) can be screwed to the lower part 31 by means of housing screws 38.

[0096] The shielding housing 40 is arranged in the interior of the housing 37 of the distribution housing 30 with a lower shielding housing shell 41 and with an upper shielding housing shell 43.

[0097] Within the shield housing 40, corresponding contact points 48 are arranged, to which the two electrically conductive cables 10, which are led from opposite sides of the distribution housing 30 through cable inlets 33,34 into the distribution housing 30, are connected.

[0098] The shielding housing 40 is again made of an electrically conductive metal sheet, provides EMC shielding, and is designed such that, in the installed position, the contact point 48 and the attached contacted cable ends 19 of the electrically conductive cable 10 are enclosed by the shielding housing 40. To ensure EMC-tight shielding even in the area of ​​the cable penetrations 33, 34 through the shielding housing 40, end sections 42 of the lower shielding housing shell 41 and end sections 44 of the upper shielding housing shell 43 are each designed such that they are enclosed in the Figures 8 and 9In the illustrated embodiment, one-piece contact elements 20 in the form of an inner sleeve 21 or support sleeve are used, each bearing against the contact elements 20 and / or the shielding 16 of the respective cable 10. In the contact position, the end sections 42, 44 of the shield housing 40 at least partially enclose the contact elements 20 or the shielding 16 of each of the four cables 10.

[0099] The shielding housing 40 has a circumferential EMC sealing edge 45 between the lower shielding housing shell 41 and the upper shielding housing shell 43, enabling the shielding housing 40 to be completely and continuously sealed in an EMC-tight manner. The EMC sealing edge 45 is designed as a circumferential crimped edge, so that the crimp of the shielding housing 40 extends along the entire complementary shaped edge sections of the lower 41 and the upper 43 shielding housing shells, allowing the two shielding housing shells 41 and 43 to be joined flush at their edge sections. A circumferential groove is provided along the crimped edge of the lower shielding housing shell 41 for this purpose, into which the complementary shaped edge of the upper shielding housing shell 43 can be inserted in a form-fitting manner. In the installed position, the lower and upper shield housing shells 41,42 seal the interior of the shield housing 40 in an EMC-tight manner.

[0100] comparable to the Figures 3 and 4 Here, two terminal elements 50 are arranged inside the distribution housing 50, each of which forms a common terminal element 50 with two clamping jaws 51, 52 for two adjacent cables 10. The first terminal element 50, which is in the foreground of the image Figures 8 and 9 The contact elements 20 of the two front cables 10 are shown. The second clamping element 50, which is in the background of the image, Figures 8 and 9 As shown, the contact elements 20 of the two rear cables 10 are assigned to them.

[0101] The cable entries 33, 34 into the distribution housing 30 are each sealed with cable seals 35. The cable seals 35 with lamellar seals are arranged here within a fixing element 36 and are protected from the outside. Snap-in fixing elements with internal cable seals are used here as fixing elements 36 for each connected electrically conductive cable 10.

[0102] The contact system 1 according to the invention offers the advantage that by clamping the clamping elements 50, which crimp the shield housing 40 with the respective contact elements 20 or shields 16 of the cables 10 concerned, a reliable, uninterrupted EMC shielding in the longitudinal direction of the electrically conductive cables 10 is ensured, particularly in the area of ​​the cable feedthroughs 33,34 into the distribution housing. REFERENCE MARK LIST

[0103] 1 Contact system 10 Electrically conductive cable 11 Longitudinal direction of the cable (double arrow) 12 Electrical inner conductor 13 Conductor axis 14 Conductor cross-section 15 Primary insulation; inner sheath of the cable 16 Shielding 17 Braided shielding 18 Secondary insulation; outer sheath of the cable 19 Contacted cable end 20 Contact element 21 Inner sleeve; support sleeve 22 First contact surface 23 Outer sleeve 24 Second contact surface 25 Bend edge 26 Insertion volume of the outer sleeve 27 Insertable section of the inner sleeve 28 Cable entry 29 Contact position 30 Distribution housing 31 Lower part of the distribution housing 32 Cover of the distribution housing 33 (First) cable entry 34 (Second or(further) cable entry 35 Cable seal 36 Fixing element; locking element 37 Housing interior 38 Housing screw connection 39 Housing seal of the distribution housing 40 Shielding housing 41 Lower shielding housing shell 42 End section of the lower shielding housing shell 43 Upper shielding housing shell 44 End section of the upper shielding housing shell 45 EMC sealing edge of the shielding housing shells 48 Contact point 50 Clamping element 51 First clamping jaw 52 Second clamping jaw 53 Recess in the first clamping jaw 54 Recess in the second clamping jaw 55 Screw connection, screw connection 56 Housing guide for clamping element 100 Arrow direction for positioning the inner sleeve.

Claims

1. Contact system (1) for electrically contacting a shield (16) of an electrically conductive cable (10) in a distribution housing (30), comprising - a distribution housing (30) having at least one cable entry (33, 34) for feeding at least one electrically conductive cable (10) into and / or through a housing interior (37) of the distribution housing (30), wherein at least one contact point (48) is arranged in the housing interior (37); - at least one electrically conductive cable (10) having an electrical inner conductor (12), a primary insulation (15) surrounding the electrical inner conductor (12), a secondary insulation (18) surrounding the primary insulation (15), and a shield (16), which shield (16) envelops the electrical inner conductor (12) and is arranged to extend between the primary insulation (15) and the secondary insulation (18) of the electrically conductive cable (10); - at least one contact element (20) arranged on the primary insulation (15) of the at least one electrically conductive cable (10), which contact element (20) comprises an inner sleeve (21), wherein the inner sleeve (21) is positioned in a contact position (29) between the primary insulation (15) and the shield (16), and a first contact surface (22) of the inner sleeve (21) contacts the shield (16) of the electrically conductive cable (10); characterized in that - the at least one electrically conductive cable (10) is fed through the at least one cable entry (33) of the distribution housing (30) and is electrically conductively attached with a stripped, contacted cable end (19) of its electrical inner conductor (12) to the at least one contact point (48), wherein the at least one contact element (20) is arranged in the housing interior (37) between the cable entry (33) and the contact point (48), and wherein - a preferably two-part shield housing (40) with a lower shield housing shell (41) and an upper shield housing shell (43) is arranged inside the distribution housing (30), and furthermore - at least one clamping element (50) is arranged inside the distribution housing (30), which clamping element (50) comprises a first clamping jaw (51) and a second clamping jaw (52) for clamping the at least one contact element (20) and end sections (42, 44) of the shield housing shells (41, 43), wherein - the shield housing (40) encloses the contact point (48) and the contacted cable end (19) of the electrically conductive cable (10) attached thereto, and wherein an end section (42) of the lower shield housing shell (41) and an end section (44) of the upper shield housing shell (43) are each tightly clamped between the at least one contact element (20) and the two clamping jaws (51, 52) of the at least one clamping element (50), so that the shield housing (40) is pressed in an abutting manner against the contact element (20) or the shield (16) and the contact element (20) or the shield (16) is pressed in an at least partially enveloping manner, and thereby at least indirectly contacting the shield (16) of the at least one electrically conductive cable (10).

2. Contact system (1) according to claim 1, characterized in that the at least one contact element (20) is the inner sleeve (21).

3. Contact system (1) according to claim 1, characterized in that the at least one contact element (20) further comprises an outer sleeve (23), wherein, in the contact position (29), the inner sleeve (21) is at least partially arranged within the outer sleeve (23), wherein the outer sleeve (23) has a second contact surface (24), and wherein the first contact surface (22) of the inner sleeve (21) and the second contact surface (24) of the outer sleeve (23) are designed such that the shield (16) of the electrically conductive cable (10) is clamped in a contact position (29) between the inner sleeve (21) and the outer sleeve (23) and is contacted by the contact element (20), wherein the shield housing (40) is pressed in an abutting manner against the contact element (20), preferably against the outer sleeve (23) of the contact element (20), and the contact element (20) is pressed in an at least partially enveloping manner, and thereby at least indirectly contacting the shield (16) of the at least one electrically conductive cable (10).

4. Contact system (1) according to one of claims 1 to 3, characterized in that the at least one clamping element (50) is positioned in its installation position in a housing guide (56) within the distribution housing (30).

5. Contact system (1) according to one of claims 1 to 4, characterized in that the at least one clamping element (50) is designed such that the two clamping jaws (51, 52) can be connected to each other in a form-fitting or force-fitting manner, preferably by means of screw connections (55), plug connections, and / or snap connections.

6. Contact system (1) according to one of claims 1 to 5, characterized in that the first clamping jaw (51) and the second clamping jaw (52) each have at least one recess (53, 54), wherein the at least two recesses (53, 54) are each shaped to be complementary to the end sections (42, 44) of the shield housing shells (41, 43) of the shield housing (40).

7. Contact system (1) according to one of claims 1 to 6, characterized in that the shield housing (40) has a preferably circumferential EMC sealing edge (45) between the lower shield housing shell (41) and the upper shield housing shell (43) and forms a continuous, uninterrupted electromagnetic shield.

8. Contact system (1) according to one of claims 1 to 7, characterized in that the shield housing (40) is made of an electrically conductive material.

9. Contact system (1) according to one of claims 1 to 8, characterized in that the distribution housing (30) comprises a housing lower part (31) and a housing cover (32), wherein the housing lower part (31) and the housing cover (32) tightly enclose the housing interior (37), preferably with a housing seal (39) arranged between the housing lower part (31) and the housing cover (32).

10. Contact system (1) according to one of claims 1 to 9, characterized in that the distribution housing (30) is made of plastic.

11. Contact system (1) according to one of claims 1 to 10, characterized in that the at least one electrically conductive cable (10) is fixed to the at least one cable entry (33, 34) in the distribution housing (30) with a fixing element (36), optionally using a cable tie.

12. Contact system (1) according to one of claims 1 to 11, characterized in that the at least one cable entry (33, 34) into the distribution housing (30) is sealed with a cable seal (35) and / or with a fixing element (36).

13. Contact system (1) according to one of claims 1 to 12, characterized in that, in addition to a first cable entry (33), at least one second or further cable entry (34) is arranged in the distribution housing (30) on the same housing side and / or on a housing side of the distribution housing (30) different from the first cable entry (33), wherein the first cable entry (33) and the at least one second or further cable entry (34) are optionally provided either with a common clamping element (50) or in each case with separate clamping elements (50).

14. Contact system (1) according to one of claims 1 to 13, characterized in that the first (51) and second (52) clamping jaws of the at least one clamping element (50) are made of metal or a metal alloy.

15. Contact system (1) according to one of claims 1 to 13, characterized in that the first (51) and second (52) clamping jaws of the at least one clamping element (50) are made of plastic.