CONTACT SYSTEM

Description

[0001] The invention relates to a contacting system, a use of a contacting system, a screwing system and a method for diverting electrical currents from a shield of a long molded part.

[0002] Contacting systems for diverting electrical currents from long-formed parts are generally known from the prior art. For example, DE 10 2008 011 978 B4 discloses a screw connection for sealed cable bushings. This comprises a double nipple that includes a seal on one side and can be screwed into an adapter on the opposite side. An EMC seal can be inserted into the adapter, which can contact a shield of a long-formed part.

[0003] EP 3 598 594 A1 discloses a cable gland with a strain relief that is clamped to a cable when a mounting nozzle is screwed into an intermediate nozzle.

[0004] US 2008 / 268687 A1 discloses a cable connector comprising a connector housing having an external thread on one side, with which the connector housing can be connected to a connection geometry.

[0005] EP 0 901 209 A1 discloses a cable gland for establishing an electrical contact of a stripped zone of a cable.

[0006] EP 1 922 793 B1 discloses a kit for at least two different cable glands with clamping elements for detecting different cable diameters.

[0007] A disadvantage of the prior art solutions is that the order in which the individual components are screwed together is strictly specified. For example, in the cable entry system according to DE 10 2008 011 978 B4, the sleeve must first be attached to the connection geometry, then screwed to the EMC seal, and only then tighten the seal and strain relief.

[0008] Another disadvantage known from the prior art is that the stripped shield must end in the contact area. For example, DE 37 37 345 A1 discloses a screw connection for shielded cables in which a shield is shortened to a specified length so that it can be clamped between a crimping body and a ring part. This leads to small tolerances during assembly of the long part, which further complicates the process.

[0009] The systems known from the prior art are also designed in such a way that a stripped shield must have a length specified by the EMC seal to ensure reliable contact. Thus, the long-formed part screw connection must usually be tightened after the EMC seal is activated.

[0010] Alternatively, the long form part screw connection and the EMC seal can be tightened in the same assembly step.

[0011] The object of the invention is therefore to provide an improved contacting system and / or screwing system. In particular, the object of the invention is to provide a contacting system and / or a screwing system that facilitates the assembly of an elongated part. In particular, the object of the invention is to provide a contacting system and / or a screwing system that enables subsequent activation and / or deactivation of an EMC seal. Furthermore, the object of the invention is to provide an improved use of a contacting system. Furthermore, the object of the invention is to provide an improved method for diverting electrical currents from a shield of an elongated part.

[0012] The object is achieved according to the invention by means of a contacting system, in particular for electromagnetically compatible high-current applications, comprising a screw sleeve designed as a double nipple, wherein the screw sleeve has a connection section on a first side, an actuating element and a clamping element, wherein the clamping element comprises at least one inner circumferential surface and at least one first end face, wherein the connection section has a connection thread and an actuating thread, wherein the screw sleeve comprises the connection thread for connection to a connection geometry on the first side of the screw sleeve, wherein the connection thread is arranged radially on the outside and the actuating thread for receiving the actuating element is arranged radially on the inside of the screw sleeve, and wherein the actuating element comprises a counterpressure end face,wherein an inner radius of the clamping element can be reduced at least in sections by means of a radial force, wherein the actuating element can be screwed to the actuating thread on the first side of the screw sleeve, and wherein by screwing the actuating element to the screw sleeve, the radial force can be applied to at least the first end face of the clamping element by at least the counterpressure end face of the actuating element being contactable with a first end face of the clamping element.

[0013] Furthermore, the object is achieved according to the invention by using a contacting system for contacting an exposed shield of a long molded part.

[0014] Furthermore, the object is achieved according to the invention by means of a screw connection system comprising an above-mentioned contacting system.

[0015] Furthermore, the object is achieved according to the invention by means of a method for discharging electrical currents from a shield of a long molded part, comprising the steps a. Providing a contacting system as mentioned above, b. Partially exposing a shield of an elongated part and introducing this into the contacting system, c. Screwing an actuating element of the contacting system onto a screwing sleeve, wherein the actuating element acts on a clamping element in such a way that the clamping element exerts a radial force on the shield of the elongated part, wherein by screwing the actuating element, the clamping element is electrically contacted with the shield or with an element connected to the shield, for example a ferrule.

[0016] A contacting system is proposed, in particular for electromagnetically compatible high-current applications. This comprises a screw connection sleeve, wherein the screw connection sleeve has a connection section on a first side, an actuating element, and a clamping element. The clamping element comprises at least one inner circumferential surface and at least one first end face, wherein the connection section has a connection thread and an actuating thread. The clamping element is preferably provided for electrically contacting a shield of a cable routed through the contacting system. The screw connection sleeve comprises, on the first side of the screw connection sleeve, the connection thread for connection to a connection geometry, wherein the connection thread is arranged substantially radially further outward than the actuating thread for receiving the actuating element. The actuating element comprises a counterpressure end face.An inner radius of the clamping element can be reduced at least in sections by means of a radial force. The actuating element can be screwed to the actuating thread on the first side of the screw sleeve, wherein the radial force can be applied to at least the first end face of the clamping element by screwing the actuating element to the screw sleeve, in that at least the counterpressure end face of the actuating element can be contacted with a first end face of the clamping element.

[0017] The contacting system comprises a screw sleeve. This is in particular a hollow cylindrical body. According to the invention, the screw sleeve comprises a connection section. The connection section extends in particular substantially over the entire length of the screw sleeve. In a further embodiment, the connection section extends over a section of the screw sleeve, in particular over only part of the length of the screw sleeve. The connection section preferably extends as far as a screw ring. In a further embodiment, the connection section comprises a connection thread. In one embodiment, it is provided that the screw sleeve comprises a connection thread for connection to a connection geometry. The connection thread is preferably designed as an external thread.In a further embodiment, it is provided that the connecting thread and / or the connecting section is designed in such a way that it can be screwed and / or inserted into a recess of a connecting geometry not belonging to the invention.

[0018] This enables an advantageous EMC seal. An EMC seal within the meaning of the invention is, in particular, a device for ensuring electromagnetic compatibility and / or diverting a current, in particular an induced current, into or from a shield of a long-formed part.

[0019] In particular, there is no need to worry about excessive length of the stripped shield. In particular, the shield does not need to end at the contact point. Another advantage is that the contacting system is operated independently of the pressure screw used to seal the long-formed part. For example, strain relief of the cable can thus be achieved independently of electrical contacting of the shield.

[0020] The connecting section has the actuating thread. According to the invention, the connecting thread is arranged substantially radially further outwards than the actuating thread for receiving the actuating element. The connecting thread and actuating thread are preferably arranged concentrically. The connecting thread and actuating thread are preferably arranged substantially at the same height in the longitudinal direction of the screw sleeve. According to the invention, the connecting thread is arranged radially on the outside and the actuating thread is arranged radially on the inside of the screw sleeve. According to the invention, the actuating thread is arranged in the connecting section of the screw sleeve. In a further embodiment, the connecting thread and actuating thread begin on the same side, the first side, of the screw sleeve or the connecting section.Preferably, the actuating thread and the connecting thread are adjacent to a first end face of the first side of the screw connection sleeve.

[0021] The contacting system has a first side and preferably a second side opposite the first side. The first side is the side of the contacting system that can be turned toward or inserted into a connection geometry.

[0022] A connection geometry not belonging to the invention can, for example, be a wall or a housing. In particular, the connection geometry has a recess or a thread suitable for connecting the connection section of the screw sleeve.

[0023] Examples are not to be regarded as exhaustive within the meaning of the invention, but can be supplemented within the scope of general technical knowledge.

[0024] According to the invention, the screw connection sleeve is designed as a double nipple. According to the invention, the double nipple has a connection section on a first side. Preferably, the double nipple has a receptacle for a pressure screw on a second side. Further preferably, the double nipple is designed on the second side such that it at least partially has a sealing element.

[0025] In a further embodiment, the screw sleeve has a screw ring, which preferably includes key contact surfaces. In particular, the screw ring defines the connection section. In a configuration of the screw sleeve as a double nipple, the screw ring can be arranged between the connection section and the receptacle for the pressure screw.

[0026] In one embodiment, the screw sleeve has a pressure face. The pressure face is preferably arranged on a protrusion or accumulation of material on an inner wall of the screw sleeve. The pressure face is preferably a partial surface of an at least partially internally circumferential shoulder. In a further embodiment, the pressure face is a substantially conical surface whose cone axis is preferably substantially identical to a longitudinal axis of the screw sleeve. The cone preferably has an angle of approximately 30° to approximately 60°, preferably approximately 45°.

[0027] In one embodiment, it is provided that the screw sleeve comprises a pressure end face, wherein the clamping element can be introduced or applied, preferably screwed in or screwed on, into or onto the screw sleeve in such a way that the counterpressure end face of the actuating element contacts the first end face of the clamping element.

[0028] In one embodiment, it is provided that the screw sleeve comprises a pressure end face, wherein the clamping element can be introduced, preferably screwed, into the screw sleeve in such a way that a pressure end face of the screw sleeve contacts a second end face of the clamping element and a counterpressure end face of the actuating element contacts a first end face of the clamping element

[0029] If the term "approximately" is used in the context of the invention in connection with values ​​or value ranges, this is to be understood as a tolerance range that the person skilled in the art considers to be customary in this field; in particular, a tolerance range of ±20%, preferably ±10%, more preferably ±5% is provided.

[0030] To the extent that different value ranges, for example preferred and further preferred value ranges, are specified in the present invention, the lower limits and the upper limits of the different value ranges can be combined with one another.

[0031] The term "essentially" indicates a tolerance range that is acceptable to a person skilled in the art from an economic and technical point of view, so that the corresponding feature can still be recognized or realized as such.

[0032] In one embodiment, the pressure face of the screw sleeve can be arranged parallel to the second face of the clamping element in a desired assembly position. Preferably, the second face is conical. Further preferably, the second face forms substantially the same angle to a cone axis or longitudinal axis as the pressure face.

[0033] The conical design of the pressure face and / or the second face has the advantage that they can easily slide against each other. When a force is applied to the clamping element in the direction of the longitudinal axis, part of the force is redirected into a radial force, allowing the clamping element to deform, particularly radially inward.

[0034] In one embodiment, a decoupling element or a spring element is arranged between the first end face and the counterpressure end face and / or the second end face and the pressure end face. Preferably, a spring element can exert a preload on the clamping element. Advantageously, a spring element can be used to compensate for an ambiguous geometry of the shield, a change in geometry due to a temperature change, and / or a movement of the parts of the contacting system, thus ensuring permanent contact. The spring element can be, for example, a helical spring or a disc spring.

[0035] The contacting system has an actuating element. The actuating element preferably comprises a recess that is completely continuous in the longitudinal direction, in particular for receiving or passing through the elongated part. More preferably, the actuating element is designed as a hollow cylinder. The actuating element preferably comprises, at least in sections, preferably completely continuous, a smooth inner wall. More preferably, the actuating element comprises, at least in sections, preferably completely continuous, an inner wall that is flat in the longitudinal direction of the actuating element. A flat inner wall within the meaning of the invention is understood to be an inner wall without material accumulations, projections, depressions, grooves, steps, etc., each of which protrudes in particular radially inward. The actuating element preferably comprises a thread, more preferably an external thread or an internal thread.Preferably, the thread of the actuating element corresponds to the actuating thread of the screw sleeve, so that the actuating element can preferably be screwed into the screw sleeve or screwed onto the screw sleeve. Preferably, the actuating element is designed such that the inner wall of the actuating element is substantially aligned with an inner circumferential surface of the clamping element. Preferably, the inner wall of the actuating element and the inner circumferential surface of the clamping element are aligned with one another with a tolerance of approximately 0.01 mm to approximately 1 mm, more preferably of approximately 0.1 mm to approximately 0.9 mm. In one embodiment, it is provided that the inner wall of the actuating element has a larger radius or a larger clear width than the inner circumferential surface of the clamping element.It is further preferably provided that the inner wall of the actuating element and / or the inner surface of the clamping element is / are designed in such a way that the shield does not compress when the contacting system is assembled, preferably when the actuating element is actuated or screwed in place. In particular, this can be achieved in that an inner diameter of the actuating element over its length, preferably over its entire length, is greater than or equal to an inner diameter of the clamping element, in particular in the unactuated state. It is further preferably provided that the inner wall of the actuating element and / or the inner surface of the clamping element is / are designed in such a way that when the contacting system is assembled, preferably when the actuating element is actuated or screwed in place, the shield can protrude from the actuating element over a length of the latter.The various configurations mentioned advantageously allow for a large tolerance when cutting the shield to length. In contrast to prior art contact systems, which require a specific length of exposed shield to prevent compression or deformation, the proposed actuating element ensures that the shield is not limited to a maximum permissible length. This significantly simplifies assembly.

[0036] Preferably, the actuating element can be screwed onto, screwed into, or tightened into the screw sleeve if the connection section of the actuating element is arranged in a connection geometry. This configuration advantageously enables flexible assembly of the contacting system independent of the assembly of the elongated part on a consumer, a strain relief, and / or a seal. For example, the contacting system is screwed into a connection geometry using the connection thread. The stripped elongated part is threaded through the contacting system, in particular the screw sleeve, the clamping element, and the actuating element, such that a shield of the elongated part is arranged substantially in the region of the clamping element. In this case, the actuating element can be lightly screwed into or onto the actuating thread of the screw sleeve.The long molded part can now be installed as intended, for example, on a consumer device. Unlike prior art solutions, this allows for a high degree of tolerance: Should the cable be slightly shorter or longer than intended, the clamping element remains positioned around the stripped area of ​​the long molded part. Particularly advantageous is that the stripped part of the shield of the long molded part does not need to be a precise length, since the clamping element can be positioned as desired, particularly in a longitudinal position on the stripped shield.

[0037] The actuating element has a counterpressure end face. In one embodiment, it is provided that the counterpressure end face of the actuating element can be arranged, in particular at least partially parallel to the first end face of the clamping element in the desired assembly position. The counterpressure end face preferably interacts with the first end face when the actuating element is screwed or tightened into the screw sleeve. The first end face is preferably conical. Further preferably, the first end face forms substantially the same angle to a cone axis or longitudinal axis as the counterpressure end face.

[0038] The conical design of the counterpressure face and / or the first face has the advantage that they can easily slide against each other. When a force is applied to the clamping element in the direction of the longitudinal axis, particularly when screwing in or tightening the actuating element, part of the force is redirected into a radial force, allowing the clamping element to deform, particularly radially inward.

[0039] The contacting system has the clamping element. This is in particular designed as a hollow cylinder. The clamping element preferably has a sleeve design. More preferably, the clamping element is made of an electrically conductive material, preferably a metal. The clamping element comprises the inner circumferential surface and preferably an outer circumferential surface as well as the first end face and preferably a second end face. The clamping element is designed such that it is radially deformable when a radial force is exerted on at least the first end face, the second end face and / or the outer circumferential surface. The inner radius can preferably be reduced in size by means of a radial force. In a preferred embodiment, it is provided that by means of a force directed along the longitudinal axis onto the first and / or second end face of the clamping element, the latter can be at least partially deflected radially inwards.In a further embodiment, it is provided that the first end face and / or the second end face of the clamping element comprises a chamfer. More preferably, at least the first end face and / or the second end face is conical. More preferably, at least the first end face and / or the second end face comprises a first partial surface which has a surface vector which is directed essentially in the direction of the longitudinal axis of the clamping element and more preferably a second partial surface which is conical. In a preferred embodiment, the first end face and / or the second end face is essentially completely conical. In a further embodiment, it is provided that the first end face and / or the second end face has a rounded portion.

[0040] Preferably, the clamping element, screwing element, actuating element, support sleeve and / or crimp sleeve are made of an electrically conductive material.

[0041] In one embodiment, the clamping element comprises a slot that is completely continuous in the direction of a longitudinal axis of the contacting system, several slots distributed around the circumference, or no slots at all. A completely continuous slot has the advantage that the clamping element can rest essentially over its entire surface against the shield of the elongated part. In another embodiment, the shield comprises a plurality of slots that are partially continuous in the longitudinal direction. The clamping element is preferably designed in a "comb-shaped" manner. The clamping element preferably comprises a plurality of tabs between the slots that are elastically or plastically deformable when a radial force is exerted on them. In another embodiment, the clamping element does not comprise any slots.Preferably, a wall thickness in the region is dimensioned substantially at least in sections, preferably over a complete length of the clamping element, such that the clamping element is plastically and / or elastically deformable when a radial force acts on it by means of the actuating element.

[0042] In a further embodiment, it is provided that the screw sleeve is designed in one piece or in multiple parts, preferably in two parts, with the clamping element. In particular, in a multi-part, preferably two-part, design of screw sleeve and clamping element, the clamping element can be accommodated inside the screw sleeve. In particular, in a one-piece design of the screw sleeve with the clamping element, the clamping element is arranged on the first side of the screw sleeve. Unlike in the claimed invention, the clamping element connected in one piece with the screw sleeve extends away from the actuating thread, which is preferably designed as an external thread, in the longitudinal direction of the screw sleeve.Further preferably, the clamping element, which is integrally connected to the screw sleeve, extends from the connecting thread of the screw sleeve in the longitudinal direction of the screw sleeve away from the latter. According to the invention, the actuating thread is arranged in the longitudinal direction between the connecting thread and the clamping element, which is integrally formed with the screw sleeve. In particular, the actuating thread is not an external thread as in the claimed invention. Further preferably, the actuating thread has a smaller external diameter than the connecting thread. In one embodiment, not as in the claimed invention, the actuating element is provided with an internal thread. Preferably, an external diameter of the actuating element is smaller than or equal to an external diameter of the connecting thread.

[0043] Preferably, the clamping element integrally connected to the screw sleeve is materially bonded to the screw sleeve or is made of the same material. Preferably, the screw sleeve and clamping element are made of one material. The clamping element preferably comprises a conductive material. Further preferably, the clamping element comprises at least one material selected from a group comprising a metal, in particular copper, conductive plastic, and / or carbon.

[0044] In one embodiment, the contacting system comprises a support sleeve, which can preferably be arranged or pushed under a shield of an elongated part, and / or a crimp sleeve, which can be arranged between the shield and the clamping element. The support sleeve is preferably hollow-cylindrical. More preferably, the support sleeve is approximately as long as or longer than the clamping element, preferably approximately 1.5 times to approximately twice as long as the clamping element. The length of the support sleeve in relation to the length of the clamping element is, in particular, the tolerance with which the clamping element can be attached to the shield, in particular in the longitudinal direction. In one embodiment, the support sleeve is designed as a rigid sleeve. The support sleeve is preferably made of an electrically conductive material, preferably metal. In particular, the support sleeve can be pushed under the shield of the elongated part before it is inserted into the screw sleeve.Furthermore, the support sleeve can preferably be arranged substantially in an area in which the clamping element is arranged, in particular such that the clamping element presses directly or indirectly against the support sleeve when a radial force is applied. Advantageously, the shield can be clamped between the support sleeve and the clamping element. Advantageously, a higher pressure can be applied to the shield by means of the support sleeve than in systems known from the prior art. In particular, this configuration ensures that electrical currents of approximately 100 A to approximately 1000 A, preferably at least approximately 300 A to approximately 500 A, can be diverted.

[0045] In one embodiment, the support sleeve is designed to be crimpable. The support sleeve, which in particular is crimpable, is crimped under the stripped shield of the elongated part, in particular before the cable is inserted into the screw connection sleeve, or is frictionally fastened by means of plastic deformation, and is preferably arranged there permanently. In one embodiment, the support sleeve has a crimping area. In a further embodiment, the support sleeve has a crimping area and a support area that is preferably not intended for crimping. The crimping area is preferably designed with thinner walls than the support area. The support area is preferably designed with thinner walls than the crimping area. In particular, the crimped support sleeve is arranged between the shield and a wire of the elongated part. The advantage of this embodiment is that the support sleeve is arranged captive on the elongated part.

[0046] In a further embodiment, a crimp sleeve is preferably applied to the elongated part in addition to a preferably crimped-on support sleeve. It is preferably provided that the crimp sleeve is crimped at least over the stripped shield, more preferably over the support sleeve. In one embodiment, the crimp sleeve and support sleeve are crimped in one work step. The crimp sleeve is preferably longer than the support sleeve, more preferably longer than the stripped area of ​​the shield. In one embodiment, the crimp sleeve comprises a crimping section. In a further embodiment, the crimp sleeve comprises an enveloping section. Preferably, the crimping section is provided for crimping and more preferably the enveloping section is not provided for crimping. More preferably, the enveloping section is, at least in sections, thinner-walled than the crimping section.This design advantageously enlarges the area in which the clamping element can be arranged on the long-formed part for electrical contact. Preferably, the stripped shield can be completely covered by the ferrule. The advantage of this design is that the shield is not damaged or frayed during frequent assembly and disassembly of the long-formed part.

[0047] The long molded part, which is not part of the invention, preferably comprises a sheath, a shield, and at least one core. The shield can be configured as a braided shield, reinforcement, or foil.

[0048] In particular, the shield is electrically conductive and, more preferably, ensures electromagnetic compatibility of the elongated part. In one embodiment of the contacting system, it is provided that an at least partially stripped elongated part can be introduced into the contacting system in such a way that, when the actuating element is screwed to the screw sleeve, the clamping element is compressed in such a way that, by means of at least part of the inner surface of the clamping element, electrical contact can be established with a shield or with an element connected to the shield.

[0049] An exemplary embodiment of the contacting system comprises a screw sleeve, an actuating element, and a clamping element. The clamping element comprises a second end face and a first end face, as well as an outer circumferential surface and an inner circumferential surface. The clamping element has a fully continuous slot along its longitudinal axis, with the slot including a gap dimension that allows the clamping element to be compressed when a radial force is applied thereto.

[0050] The actuating element comprises a thread with which it can be screwed into or onto the screw sleeve. Furthermore, the actuating element comprises a counterpressure face that interacts with the first face of the clamping element in the assembled state.

[0051] The clamping element is inserted into the screw connection sleeve, for example, and its second end face rests against the pressure end face of the screw connection sleeve. The actuating element is screwed into the screw connection sleeve, and its counterpressure end face rests against the first end face of the clamping element. If the actuating element is screwed in further, a force is applied to the clamping element's end faces. Due to the conical design of the end faces, the pressure end face, and the counterpressure end face, the applied force is deflected radially inward, with the first end face sliding along the pressure end face and the second end face sliding along the counterpressure end face. The inner radius of the clamping element is thus reduced, and the gap dimension of the slot is narrowed.

[0052] The contacting system can include a long molded part with a shield and a sheath. The long molded part, which is threaded into the screw connection sleeve, for example, has a section where the sheath is removed. A support sleeve can be arranged under the stripped shield. The clamping element is arranged around the shield. The clamping element can also be arranged in the area of ​​the support sleeve. When the actuating element is tightened, the clamping element deforms and exerts pressure on the shield with its inner sheath surface.

[0053] The support sleeve prevents any major deformation of the clamping element and / or the shield; instead, the radially inward force is used to clamp the shield between the clamping element and the support sleeve. This support sleeve advantageously ensures, for example, that the clamping diameter is always the same, which is preferably equal to the diameter of the support sleeve plus twice the shield thickness. Another advantage of the support sleeve is that it provides a counterbearing for clamping using the clamping element. In particular, the position of the contact system relative to the long molded part can be changed before the actuating element is tightened. This means that the final position of the actuated contact system on the long molded part can differ from the pre-assembly position.

[0054] In a further exemplary embodiment, the support sleeve can be arranged below the stripped shield, while a crimp sleeve is arranged above the stripped shield. If the crimp sleeve is crimped onto the elongated part, the support sleeve is also crimped. Due to the plastic deformation of the crimp sleeve and support sleeve, these components of the contacting system remain permanently on the elongated part and protect the shield, especially during frequent assembly and disassembly of the elongated part. The crimp sleeve can be used to create a larger tolerance range over which the clamping element for discharging electrical currents can be positioned on the elongated part, especially if the crimp sleeve is longer than the stripped area. Furthermore, the surface of the crimp sleeve advantageously offers better electrical contact with the clamping element than, for example, a shield made of wire mesh.Advantageously, a surface of the ferrule and / or an inner surface of the clamping element designated in is designed such that electrical contact is improved, for example, roughened or smoothed.

[0055] The screw connection sleeve is designed as a double nipple so that it can accommodate, for example, a pressure screw and a sealing element for sealing and fixing a long molded part.

[0056] In a further exemplary embodiment, it is provided that the contacting system comprises a screw sleeve which is designed in one piece, preferably in one part, with the clamping element. The clamping element has, for example, a number of slits on a first side, in particular to facilitate deformation. The actuating element has a counter-pressure surface on its inner side and a thread, which is preferably designed as an internal thread. The actuating thread is arranged between the connecting thread and the clamping element. When the actuating element is screwed onto the actuating thread, the clamping element is plastically and / or elastically deformed in that the counter-pressure surface acts on a first end face of the clamping element and a force which is applied by tightening the actuating element is at least partially deflected radially inwards.

[0057] Furthermore, the use of a contacting system described above for the indirect or direct contacting of an exposed shield of a long molded part is proposed.

[0058] In one embodiment of the contacting system, the at least partially stripped elongated part can be inserted into the contacting system in such a way that a support sleeve can be arranged between at least one wire of the elongated part and the shield of the elongated part. The support sleeve can, for example, be pushed under the stripped shield by hand and / or crimped under the shield using a tool.

[0059] In one embodiment of the use of the contacting system, it is provided that the at least partially stripped elongated part can be introduced into the contacting system in such a way that, when the actuating element is screwed to the screwing sleeve, the clamping element is deformable in such a way that the clamping element directly or indirectly exerts a radial force on the shield. In particular, at least one force acting in the longitudinal direction is at least partially deflected radially inwards. Preferably, a force acting in the longitudinal direction of the contacting system is at least partially deflected radially inwards by means of at least one conical end face of the clamping element, a conical pressure end face of the screwing sleeve and / or a conical counterpressure end face of the actuating element. The clamping element preferably contacts the shield with its inner sheath essentially over its entire surface.

[0060] In one embodiment of the contacting system, the clamping element presses the shield against the support sleeve. Due to the counter-bearing formed by the support sleeve, the clamping element can exert a high contact force on the shield, thereby preferably ensuring that high currents, for example, from approximately 100 A to approximately 1000 A, can be transmitted.

[0061] In a further embodiment, the long-formed part is held and / or sealed in a force-locking manner by means of a pressure screw that can be screwed onto a second side of the screw sleeve and a sealing element. Advantageously, strain relief can be provided by the force-locking connection of the long-formed part using the pressure screw and the sealing element. The strain relief can advantageously be attached and removed independently of the electrical connection of the clamping element to the shield.

[0062] Furthermore, a screw connection system comprising a contacting system as described above is proposed.

[0063] According to the invention, the screw sleeve of the contacting system of the screw connection system is designed as a double nipple. In a further embodiment, it is provided that the screw sleeve has a connection section and a pressure-absorbing section. The pressure-absorbing section preferably comprises a pressure-absorbing thread, which is more preferably designed as an external thread. In one embodiment, the screw connection system comprises a pressure screw that can be screwed onto the screw sleeve, preferably onto the pressure-absorbing section. A sealing element can preferably be inserted at least partially into the screw sleeve, preferably into the pressure-absorbing section of the screw connection sleeve. The sealing element can preferably be deformed by means of the pressure screw by screwing it onto the pressure-absorbing section in such a way that the elongated part that can be introduced into the screw connection system is sealed and / or strain-relieved therein.Preferably, the actuation of the pressure screw can be performed completely independently of the actuation of the contacting system. Thus, the long molded part can be screwed, i.e., guided through a connection geometry and sealed and / or strain-relieved there, without actuating the contacting system. Advantageously, the contacting system can be actuated by screwing in or tightening the actuating element at any time before or after actuating the pressure screw.

[0064] Furthermore, a method for diverting electrical currents from a shield of a long-form part is proposed, comprising the steps: a. Providing a contacting system as described above, b. Partially exposing a shield of an elongated part and inserting it into the contacting system, c. Screwing an actuating element of the contacting system to a screw sleeve, wherein the actuating element acts on a clamping element such that the clamping element exerts a radial force on the shield of the elongated part or on an element connected to the shield, wherein by screwing the actuating element, the clamping element is electrically contacted with the shield or with an element connected to the shield

[0065] In one embodiment, it is provided that the clamping element is at least partially radially deformed by screwing in the actuating element. Preferably, a force is exerted on the first end face and / or the second end face of the clamping element, which are more preferably conical in design. Due to the preferably at least partially slotted design of the clamping element, the first and / or second end face can slide on the pressure end face of the screw sleeve and / or the counterpressure surface of the actuating element and at least partially reduce the inner radius of the clamping element and / or exert a force on an elongated part, its stripped shield or the crimp sleeve around which the clamping element is arranged.

[0066] In one embodiment, a support sleeve is placed under the shield before the long-formed part is inserted into the contacting system. Preferably, the support sleeve is secured using an adhesive tape or similar means, for example, by narrowing the shield before the long-formed part is threaded into the screw connection sleeve.

[0067] In one embodiment, it is provided that the screwing in of the actuating element for clamping the clamping element to the shield or to an element connected to the shield, preferably a ferrule as the element connected to the shield, takes place before or after a connection of the long molded part to a consumer.

[0068] The shield does not need to end at the contact point.

[0069] Further advantageous embodiments will become apparent from the following drawings. However, the developments presented therein are not to be interpreted as limiting; rather, the features described therein can be combined with one another and with the features described above to form further embodiments. Furthermore, it should be noted that the reference numerals used in the description of the figures do not limit the scope of the present invention, but merely refer to the exemplary embodiments shown in the figures. Identical parts or parts with the same function have the same reference numerals below. They show: Fig. 1 an exploded view of a contacting system; Fig. 2 a partially sectioned view of the assembled contacting system from Fig. 1 ; Fig. 3 a view of a further embodiment of the contacting system; Fig. 4 a sectional view of the contacting system from Fig. 3 with the actuating element unscrewed; Fig. 5. a sectional view of the contact system from Fig. 3 with screwed-in actuating element; Fig. 6 a sectional view of a long-formed part with support sleeve and crimp sleeve - uncrimped; Fig. 7 a sectional view of a long-formed part with support sleeve and crimp sleeve - crimped; Fig. 8 a schematic sectional view of a long-formed part with support sleeve and crimp sleeve in a screw-in sleeve with screwed-out actuating element; Fig. 9 a schematic sectional view of the long-formed part from Fig. 8 in a screw sleeve with screwed-in actuating element; Fig. 10 a further embodiment of the contacting system; and Fig. 11 an exploded view of the contacting system according to Fig. 10 .

[0070] Fig. 1 shows an exploded view of a contacting system 10 with a screw sleeve 12, an actuating element 24 and a clamping element 50. The clamping element 50 comprises a second end face 56 and a first end face 58 as well as an outer circumferential surface 54 and an inner circumferential surface 55. The clamping element 50 has a completely continuous slot 52 in the direction of the longitudinal axis 70 of the contacting system 10, wherein the slot includes a gap 53 which enables the clamping element 50 to be compressed when a radial force is applied thereto.

[0071] The actuating element 24 comprises a thread 25 with which it can be screwed into the screw sleeve 12. Furthermore, the actuating element 24 comprises a counterpressure end face 26, which interacts with the first end face 58 of the clamping element 50 in the assembled state.

[0072] The screw sleeve 12 is designed as a double nipple, so that it can accommodate a pressure screw 30 and a sealing element 36 for sealing and securing a long molded part. The screw sleeve 12 has a connection section 16 on a first side 11, which is bordered on one side by a screw ring 17. With the connection section 16, the screw sleeve 12 can be inserted into a connection geometry (not shown here) or screwed in using the connection thread 18.

[0073] Fig. 2 shows a half-sectioned view of the contact system 10 of the Fig. 1 in assembled form. The clamping element 50 is inserted into the screw sleeve 12 and rests with its second end face 56 against the pressure end face 32 of the screw sleeve 12. The actuating element 24 is screwed into the screw sleeve 12 and rests with its counterpressure end face 26 against the first end face 58 of the clamping element 50. If the actuating element 24 is screwed in further, a force is applied to the clamping element 50 on its end faces 56 and 58. Due to the conical design of the end faces 56 and 58 and the pressure end face 32 as well as the counterpressure end face 26, the introduced force is deflected radially inward and the first end face 56 slides on the pressure end face 32 and the second end face 58 slides on the counterpressure end face 26. The inner radius 51 of the clamping element 50 is thus reduced and the gap 53 of the slot 52 is reduced.

[0074] Fig. 3 shows a view of a further embodiment of the contacting system 10. In the contacting system 10, an elongated part 100 with a shield 102 and a jacket 104 is arranged.

[0075] Fig. 4 shows the contact system 10 from Fig. 3 in a sectional view in which the actuating element 24 is not screwed into the screw sleeve 12. The elongated part 100, which is threaded into the screw sleeve 12, has a section (not labeled for clarity) in which the sheath 104 is removed. A support sleeve 60 is arranged below the stripped shield 102. The clamping element 50 is arranged around the shield 102. The clamping element 50 is also arranged in the region of the support sleeve 60.

[0076] Fig. 5 shows the contact system 10 from Fig. 4 , in which the actuating element 24 is screwed into the screw sleeve 12. When the actuating element 24 is tightened, the clamping element 50 deforms and exerts pressure on the shield 102 with its inner surface (not shown here). The support sleeve 60 does not cause any major deformation of the shield 102, but rather the radially inward-acting force is used to clamp the shield 102 between the clamping element 50 and the support sleeve 60. In particular, the position of the contacting system 10 on the long molded part 100 can be changed before the actuating element 24 is tightened. Fig. 5 that the final position of the actuated contact system 10 on the long molded part 100 in Fig. 5 from the position during pre-assembly to Fig. 4 In particular, there is no need to worry about the excess length of the stripped shield 102. Another advantage is that the contacting system 10 is actuated independently of the actuation of the pressure screw 30 for sealing the long molded part 100.

[0077] Fig. 6 shows an elongated part 100 with a support sleeve 60 and a crimp sleeve 63. The support sleeve is arranged below the stripped shield 102, while the crimp sleeve 63 is arranged above the stripped shield 102.

[0078] Fig. 7 shows the crimped ferrule 63, whereby the support sleeve 60 has also been crimped. Due to the plastic deformation of the ferrule 63 and the support sleeve 60, these components remain permanently attached to the long-formed part 100 and protect the shield 102, especially during frequent assembly and disassembly of the long-formed part 100.

[0079] Fig, 8 und Fig. 9 show a sketch of the long molded part 100 with support sleeve 60 and crimp sleeve 63 arranged in a contacting system 10, wherein Fig. 8 the unactuated contact system 10 and Fig. 9 the actuated contacting system 10. The crimp sleeve 63 provides a larger tolerance range on which the clamping element 50 is positioned to divert electrical currents on the long-form part 100. Furthermore, the surface 65 of the crimp sleeve 63 advantageously offers better electrical contact to the clamping element 50 than, for example, a shield 102 made of a wire mesh. Advantageously, a surface 65 of the crimp sleeve 63 and / or a Fig. 1 designated inner surface 55 of the clamping element 50 is designed in such a way that electrical contact is improved, for example roughened or smoothed.

[0080] Fig. 10 shows a further embodiment of the contacting system 10, in which the screw sleeve 12 and the clamping element 50 are designed as a single piece. The clamping element 50 has a number of slots 52 on the first side 11, only one of which is shown by way of example. The actuating element 24 has a counterpressure surface 26 on its inner side.

[0081] Fig. 11 shows an exploded view of the contact system 10 from Fig. 10 The actuating thread 19 is arranged between the connecting thread 18 and the clamping element 50. The actuating element 24 has a thread 25 that is designed as an internal thread.

[0082] The proposed contacting system 10 advantageously creates a possibility for ensuring large tolerances during the assembly of long-formed parts 100. For example, the positioning of the clamping element 50 can be generously selected on the shield 102 of the long-formed part 100, and the stripped part of the shield does not have to be precisely adapted to the conditions of the contacting system. Another advantage is that the actuation of the contacting system, i.e., contacting with the shield, can be performed independently of further assembly steps, thus further simplifying the assembly of the long-formed part.

Claims

1. Contact-making system (10) comprising a screw-connection sleeve (12) that is developed as a double nipple, wherein the screw-connection sleeve (12) has a connecting section (16) on a first side (11), an actuation element (24) and a clamping element (50), wherein the clamping element (50) comprises at least one inner lateral surface (55) and at least a first abutting face (58), wherein the connecting section (16) has a connecting thread (18) and an actuation thread (19), wherein the screw-connection sleeve (12) comprises the connecting thread (18) on the first side (11) of the screw-connection sleeve (12) for the connection to a terminal geometry, wherein the connecting thread (18) is arranged on the radially outer side of the screw-connection sleeve (12) and the actuation thread (19) is arranged on the radially inner side of the screw-connection sleeve (12) for the purpose of receiving the actuation element (24), and wherein the actuation element (24) comprises a counter-pressure abutting face (26), wherein an inner radius (51) of the clamping element (50) can be reduced at least in sections by means of a radial force, wherein the actuation element (24) can be screwed to the actuation thread (19) on the first side (11) of the screw-connection sleeve (12), and wherein the radial force can be applied to at least the first abutting face (58) of the clamping element (50) by means of screwing together of the actuation element (24) with the screw-connection sleeve (12), in that at least the counter-pressure abuting face (26) of the actuation element (24) can be brought into contact with the first abutting face (58) of the clamping element (50).

2. Contact-making system (10) according to claim 1, characterized in that an at least partially stripped long-shaped part (100) can be introduced into the contact-making system (10) in such a way that, when the actuation element (24) is screwed to the screw-connection sleeve (12), the clamping element (50) is pressed in such a way that, by means of at least a part of the inner lateral surface (55) of the clamping element (50), an electrical contact can be made with a shield (102) or with an element that is connected to the shield (102).

3. Contact-making system (10) according to one or more of the preceding claims, characterized in that a second abutting face (56) and / or the first abutting face (58) of the clamping element (50) comprises a chamfer.

4. Contact-making system (10) according to one or more of the preceding claims, characterized in that the clamping element (50) comprises a slot (52) that is completely continuous in the direction of a longitudinal axis (70) of the contact-making system (10), a plurality of slots that are distributed around the circumference, or no slot.

5. Contact-making system (10) according to one or more of the preceding claims, characterized in that the screw-connection sleeve (12) is developed in a single piece or in several parts with the clamping element (50).

6. Contact-making system (10) according to one or more of the claims 3 to 5, characterized in that the screw-connection sleeve (12) comprises a pressure abutting face (32), wherein the clamping element (50) can be introduced into the screw-connection sleeve (12) in such a way that a pressure abutting face (32) of the screw-connection (12) makes contact with the second abutting face (56) of the clamping element (50) and the counter-pressure abuting face (26) of the actuation element (24) makes contact with the first abutting face (58) of the clamping element (50).

7. Contact-making system (10) according to one or more of the preceding claims, characterized in that it comprises a supporting sleeve (60) that can be pushed under a shield of a long-shaped part (100) and / or in that ist comprises a crimping sleeve (63) that can be arranged between the shield (102) and the clamping element (50).

8. Use of a contact-making system (10) according to one or more of the preceding claims, for the direct or indirect contact-making of an exposed shield (102) of a long-shaped part (100).

9. Use according to claim 8, characterized in that the at least partially stripped long-shaped part (100) can be introduced into the contact-making system (10) in such a way that a supporting sleeve (60) can be arranged between at least one core of the long-shaped part (100) and the shield (102) of the long-shaped part (100).

10. Use according to one or more of the claims 8 to 9, characterized in that the clamping element (50) presses the shield (102) against the supporting sleeve (60).

11. Use according to one or more of the claims 8 to 10, characterized in that the long-shaped part (100) is being held and / or sealed in a force-fitted manner by means of a pressure screw (30) that can be screwed onto a second side of the screw-connection sleeve (12) and by means of a sealing element (36).

12. Screw-connection system for the screw-connection of a long-shaped part (100), comprising a contact-making system (10) according to one or more of the claims 1 to 7.

13. Method for the for the discharge of electrical currents from a shield of a long-shaped part, comprising the steps of a. providing a contact-making system (10) according to one or more of the claims 1 to 7, b. partially exposing a shield (102) of a long-shaped part (100) and introducing it into the contact-making system (10), c. screwing together of an actuation element (24) of the contacting system (10) with a screw-connection sleeve (12), wherein the actuation element (24) acts on a clamping element (50) in such a way that the clamping element (50) exerts a radial force on the shield (102) of the long-shaped part (100) or on an element that is connected to the shield (102), wherein the clamping element (50) is being electrically contacted with the screen (102) or with an element that is connected to the screen (102), by means of the screwing together of the actuation element (24).

14. Method according to claim 13, characterized in that a supporting sleeve (60) is being placed under the shield (102) before the long-shaped part (100) is being introduced into the contact-making system (10).

15. Method according to one or more of the claims 13 to 14, characterized in that a crimping sleeve (63) is being arranged as the element that is connected to the shield (102), on the shield before the long-shaped part (100) is being introduced into the contact-making system (10).

16. Method according to one or more of the claims 13 to 14, characterized in that the screwing in of the actuation element (24) for the purpose of the clamping of the clamping element (50) with the shield (102) or with an element that is connected to the shield (102), takes place before or after a connecting of the long-shaped part to a consumer.