EP1632009B1 - Contact element and additional conduction chamber for a plug or socket produced according to insulating-piercing connecting technology - Google Patents

Abstract

A contact ( 1 ) for a plug or socket of a quick-connect plug connection, the contact ( 1 ) being held mounted in a contact holder ( 2 ) having a region for press-fit gripping a conductor, a wire holder ( 7 ) having at least one wire seat ( 7.1 ) for the end of a wire and the contact ( 1 ) engages the wire in the wire seat ( 7.1 ), where according to the invention the contact ( 1 ) has at least two press-fit arms ( 1.4 ) of curved and/or polygonal section that contact the wire generally axially.

Description

Technical area

The invention relates to a contact element, and as a further complementary to this line chamber for a plug or a socket of the quick connect technology relevant connector in insulation displacement technology according to the features of the preamble of claim 1.

State of the art

An important trend in connector technology is to rationalize, as efficiently as possible, the permanent electrical connection between insulated electrical conductors and the corresponding contact elements of connectors, devices, sockets, sensor-actuator modules, printed circuit board modules, etc. to produce with a minimum of time and financial effort. An important requirement here is to manually perform this connection process as error-free as possible without the use of auxiliary tools. In this context, terms such as e.g. "Quick contacting" or "quick connection technology" coined. The most important contact technologies are insulation displacement technology, penetration technology, collet technology and spring contact technology. Another very important trend, which derives more from the general technical development, is to miniaturize connectors and other cable connection devices - usually with at least consistent performance features.

One of the most important solderless electrical connections is the insulation displacement connection. According to EN 60352-3, this is defined as "a solderless" connection made by pressing a single wire into a precisely formed slot in a terminal, with the edges of the insulation displacement block displacing the insulating sleeve deform round solid conductors or the individual wires of a wire strand conductor and thus produce a gas-tight connection. A very favorable feature of insulation displacement terminals is that the (metallic) insulation displacement edges the contact force on the metallic conductor symmetrical - ie torque-free - and permanently elastic apply at right angles to the head; Creep and relaxation phenomena are negligible as a result of the material properties, as well as by metallic Nachfedern. Compared to the penetration technique, which only works on wire strand conductors, insulation displacement terminals have the further advantage of being able to contact both solid and stranded conductors.

In its known form, a cutting clamp is operated so that the longitudinal axis of the solid or wire strand conductor is arranged perpendicular to the plane defined by the flanks of the insulation displacement clamp plane. This situation requires that the entire wire harness must be dissipated approximately perpendicular to the direction of insertion of the connector. If necessary, under these circumstances, an escape between cable outlet and plug-in direction only by its deflection, i. with additional space, and usually also part-effort can be achieved.

Therefore, several attempts have been made to produce connectors with insulation displacement terminals, in which the cable was arranged in alignment with the direction of insertion; It was anxious to minimize the above-mentioned effort or disadvantage. In principle, in this case either the axis of the electrical conductor was arranged at an acute angle to the plane of the insulation displacement edges, or the insulation displacement terminal was angled in the end of its slot, and wedge elements - usually resiliently - pressed into the head (for example in the DE 100 26 295 or EP 1 158 611 ).

In the known round connectors (plug or socket) turned out to be unrealizable the implementation of such plug-in images, which are provided with a middle contact, since pitch circles, which define the position of the external contacts, fixed with a relatively low level by guidelines are predetermined. Due to the basic design of the known insulation displacement terminals, as well as housed in corresponding insulating bodies line chambers, the space for a middle pole is installed in principle, and thus limits the range of applications of these connectors.

The insulation displacement terminals or the insulation displacement edges are flat or flat (flat). In order to generate the required contact forces, the insulation displacement clamp must therefore be made relatively wide and thus bulky in the spring direction. This disadvantage is additionally reinforced in terms of space, since the insulation displacement terminals are perpendicular to the plane in which the cable cores must be laterally deflected for the purpose of contacting or inclined (as in the case of EP 1 158 611 ). Another disadvantage of flat insulation displacement terminals is that they are guided in corresponding channels, which are housed in the insulating pieces, which also contain the conduit chambers for deflecting the cable cores. These channels fix the insulation displacement terminals in their position and ensure that the insulation displacement edges are not pushed aside from the core by the core when penetrating the core insulation. As a result of the small contact surfaces, which have such insulation displacement terminals in the spring direction, thereby arise on the side walls of these plastic channels considerable surface pressures, which may possibly lead to their damage. This effect has a particularly negative effect in the case of punched cutting clamps and because of their rough, provided with punched burrs side edges.

WO01 / 13470 , which is considered to be the closest prior art, discloses a contact element according to the preamble of claim 1.

Connectors, junction boxes, sensor-actuator modules, etc. are electronic equipment that must meet minimum requirements for creepage and clearance distances between electrically conductive parts of varying potential: s. EN 50178. This standard refers to i.a. then that "manufacturing tolerances in the construction and connection of the electronic equipment (EB) must be taken into account locally". In addition: "Greater clearances and creepage distances must be provided, in particular, when they can be newly created or modified when installing or connecting the EB on site by means of the type of installation or the wiring process". It also states: "The dimensioning of clearances and creepage distances must take into account an expected reduction during the service life in the expected environment". These criteria are of great importance, in particular with regard to the positioning of the live ends of the - relatively easily bendable and relatively inaccurately cut to length - core wires.

Presentation of the invention

The invention is therefore an object of the invention to provide a contact element, and as a further complementary to this line chamber for a plug or socket of the quick connect technology related connector that works on the principle of insulation displacement contact, with which the disadvantages described above are avoided.

This object is solved by the features of claim 1.

According to the invention it is provided that the contact element has at least two insulation displacement edges, which have a curved and / or polygonal cross-section in cross-section and contact the conductor wire approximately in the axial direction. Cutting clamps with such curved or polygonal flank cross-sections have the advantage that they have much smaller spring dimensions than known planar cutting terminals, which contact the line conductor at approximately right angles in addition to the advantage of a particularly compact design. With such insulation displacement connectors can thus be realized plugs or sockets for connectors in insulation displacement technology, which have much better properties with respect to the contact and the contact reliability and also build even more compact than the known connectors. Corresponding to the shape of the flanks of the insulation displacement terminals, there is a strand holder which has conduction chambers, into which the ends of the conduction conductors are introduced and where appropriate can be fixed there. The line chambers have means which cause the line wires to deflect out of their longitudinal extent when inserted into the line chambers. After the lead wires have been inserted into these line chambers, the insertion of the insulation displacement terminals in the axial direction also takes place in the strand support, i. a respective cutting terminal contacts a respective line core end. It is further provided according to the invention that the insulation displacement edges are at least partially fixed in position in the strand holder. That is, the strand holder partially absorbs those forces which occur when contacting by means of insulation displacement clamps, thereby effectively preventing bending or pushing away of the insulation displacement edges upon contact.

In the following, the contact element according to the invention, and further as the complementary to this conduit chamber based on an embodiment, to which the invention is not limited, described in detail and illustrated by the figures.

Short description of the drawing

Figur 1

verschiedene Ansichten eines Kontaktelementes, daß als Kontaktstift ausgebildet ist und Schneidklemmflanken aufweist,

Figur 2

einen Kontaktträger, der mindestens ein Kontaktelement gemäß Figur 1 aufnimmt,

Figuren 3a und 3b

verschiedene Ansichten eines Litzenhalters, der die Enden der Leitungsadern aufnimmt und in dessen Leitungskammern die Schneidklemmflanken zwecks Schneidklemmkontaktierung einge- führt werden.

Show it

FIG. 1

various views of a contact element that is designed as a contact pin and has insulation displacement edges,

FIG. 2

a contact carrier, the at least one contact element according to FIG. 1 receives

FIGS. 3a and 3b

various views of a strand holder, which receives the ends of the cable wires and in the line chambers, the insulation displacement edges are introduced for the purpose of insulation displacement contact.

Ways to carry out the invention

In FIG. 1 an electrical contact element 1 is shown, which is configured in the direction of connection of the plug of the connector in which it is used as a contact pin 1.1, but depending on the application, as a contact socket, hybrid contact, PCB contact, solder contact, etc. can be designed. For the purpose of attachment in an insulating support, the contact element 1 is provided with characteristics 1.2, which may also have a structure in the longitudinal direction if necessary with regard to protection against twisting (eg knurling). As mounting aid (stop) and to catch the insulation displacement forces the surface serves 1.3. In the direction of the wires, the contact element 1 is designed as a cutting terminal with at least two insulation displacement 1.4 and the intermediate insulation displacement slot 1.5 with the width "s" and Einführschrägen 1.6, on the one hand have a centering effect with respect to the line core and on the other hand cause a reduction in the penetration force. The cutting clamping edges 1.4 shown here have the shape of ring segments in cross-section, with the special feature that the dimension "u" is equal to or only slightly smaller than the diameter of the line core to be contacted "D". In the other extreme case, this insulation displacement terminal can also be designed so that "u = s", whereby a double insulation displacement terminal is realized. Furthermore, ring segments are only a particular embodiment of the general case, according to which the cross sections of the insulation displacement edges 1.4 have a curved shape - eg elliptical. Also conceivable for this are also polygonal cross-sections, in which case, in particular, an L-shape (for a simple insulation displacement terminal) or a C or U-shape (for a double insulation displacement terminal) would be conceivable for the respective flanks. Cutting clamps with such curved or polygonal flank cross-sections have the significant advantage in terms of a compact design that they have much smaller dimensions in the spring direction with the same spring stiffness as insulation displacement terminals with flat edges. Also conceivable are combinations of curved and polygonal sections (eg a "slot shape"). Another essential embodiment is that an insulation displacement slot 1.5 between two insulation displacement edges 1.4 in its course at least partially the same width and / or at least partially having increasing and / or decreasing width. For example, the slot 1.5 has a straight, stepped, corrugated or serpentine course. Another interesting interpretation with respect to all these construction variants arises when the slot width "s" on the slot length is not constant, but variable, in particular V-shaped so that the slot at the bottom of the slot is slightly narrower than at the insertion be 1.6: "s _P <s _Q ". This design is particularly important in such contacts, where the line core is at an acute angle to the insulation displacement slot, since in this case, a correspondingly larger Kontaktierungslänge formed as in transverse strands. Since there is a fixed relationship in terms of contact quality between the diameter of the metallic conductor wire and the slot width of the insulation displacement terminal, such a V-slot would cause that in the direction of slot bottom (point P) rather thinner conductor, at the top, however, rather thicker conductor contacted optimally would, whereby the range of application of such insulation displacement terminals could be extended accordingly. Moreover, it is conceivable especially in punched insulation displacement terminals, also for the purpose of improving the contact quality and / or extension of the application spectrum in terms of conductor diameter, the slot edges not straight, but eg in the form of very shallow "serpentine", flat into one another "steps" u. ä. where, as before, the slot width "s" may be either constant or variable. By this means described so the insertion of the conductor wire is facilitated and at the same time in the insulation displacement contacting a retreat of the lead wire in the longitudinal direction effectively prevented. Furthermore, the orientations of the dimension "h" corresponding boundary surfaces of the insulation displacement slot 1.5, the insertion bevel 1.6 and the insulation displacement edges 1.4. With respect to the axes "aa" and "bb" (see. FIG. 2 , Section BB) over the longitudinal extent of these subregions are made at least partially constant and / or at least partially variable. This orientation can, for example, at the dimension "s" parallel to the axis "aa", such as at the dimension "u" parallel to the axis "bb", or have an orientation between these two borderline cases. Also, the dimension "h" along these boundary surfaces, at least partially constant and / or at least partially variable, whereby an optimization of the penetration force characteristic is achieved.

FIG. 2 shows a consisting of electrical insulation material contact carrier 2 with a support collar 2.1, a coding or anti-rotation 2.2 and receiving holes 2.3, in which the contacts 1 are fixed in a defined position (for example by encapsulation) or pressed. According to the areas 1.3 these holes are provided with bearing surfaces 2.9. Optionally, in each case that receiving bore - here, for example, the middle - whose contact with a metallic housing the plug or socket must be electrically connected, provided with an additional concentric receiving bore 2.4, which serves for receiving or fixing a contacting element, not shown here. According to this bore or the contacting element, the contact carrier has a bearing surface 2.5, a receiving or fastening groove 2.6 and a passage slot 2.10. Furthermore, the contact carrier 2 has a further support collar 2.7, a seal groove or - surface 2.8, a guide surface 2.11, a further coding or rotation 2.12, and a stop surface 2.13, these embodiments for the arrangement of the contact carrier 2 in other components of the plug or the socket are required.

In the FIGS. 3a and 3b In several views, an existing from an electrical insulation material strand holder 7 with conductor chambers 7.1 shown in which the respective cable cores are defined for the purpose of contact with the associated insulation displacement terminals recorded and positioned. The conductor chambers 7.1 are designed funnel-shaped on the side of the conductor introduction with circumferential chamfers or rounded 7.7. In the further course (direction (-z)), the basic shape of the conductor chamber 7.1 initially has a constant cross section with the basic dimensions "m * n". In this case, "m" defines to what extent, or with which characteristic, the conductor core is deflected, while "n" is oriented according to the diameter of the conductor so that it can escape as little as possible in the lateral direction when the insulation displacement terminal penetrates. □ Towards its end, the conductor chamber 7.1 tapers unilaterally via a deflection bevel 7.4 to a cross section which corresponds to the respective end of the conductor wire so that it is positioned in the xy projection sufficiently precisely with respect to the insulation displacement terminal that the y Coordinate of the metallic conductor from the wire with respect to the electrical contact with sufficient certainty is less than the y-coordinate of the insulation displacement slot. This positioning also causes the cutting clamp to penetrate at the end of the line core, which also results in space savings in the longitudinal direction. In the opposite direction, the chamber dimension "m" must be determined so that the xy projection of the metallic conductor also with sufficient certainty the insulation displacement slot 1.5 thwarted. Due to the fact that the diameter of the metallic conductor is necessarily smaller than the core diameter "D", a secure contact can be achieved even under the condition "m <2D". At the end of the conductor chamber 7.1 is a stop 7.6, which ensures that a live lead wire can not protrude from the conductor chamber 7.1. At the same time causes this stop 7.6 that against the Cutting terminal also takes place an accurate positioning of the wire end in the z direction. While the conductor chamber cross-section over the width dimension "n" has consistently flat surfaces, it tapers at the ends defined by the dimension "m" either to a more curved, in particular semicircular shape 7.1.1 or to an approximately polygonal, in particular V shaped figure 7.1.2. Of course, these ends can also have the same shape. This shape can also be maintained on the deflection bevel 7.4 up to the stop 7.6 the same or in a similar manner. These tapers are particularly important in line veins with a smaller diameter than the chamber width "n", where they cause their centering in the center plane of the line chamber 7.1 when deflecting such wire. Furthermore, it is essential that the line chamber 7.1 has means which cause the line core is deflected when inserted into the line chamber 7.1 from its longitudinal extent. It is specifically provided that the means are projections or ribs which are arranged one above the other in the longitudinal direction and / or circumferentially offset from each other on the wall of the conduit chamber 7.1. That is, there are within the conductor chamber 7.1 one or more, in particular two Umlenkrippen 7.2 and offset over the z-axis one or more, in particular two Umlenkrippen 7.3. These ribs are provided in the direction of conductor insertion with relatively shallow slopes 7.2.1 and 7.3.1, which prevents entanglement of the wires and reduces the frictional forces during loading. In addition, the ribs 7.2 and 7.3 along these slopes in their (xy) cross-section further slopes 7.2.2 and 7.3.3, similar to the chamber tapers 7.1.1 and 7.1.2, especially in relation to thinner wires vein a centering effect to have. For the purpose of this effect, the slopes 7.2.2 and 7.3.3 can be made different depending on the number and distribution of the ribs 7.2 and 7.3 over the chamber width "n", wherein - as in the slope 7.3.3 - on the z-axis can also have a variable inclination. The rib, possibly the ribs 7.3 have in the direction of the stop 7.6 towards a further slope 7.3.2, the center of the end of the conductor, especially when retreating during penetration of the insulation displacement terminal additionally centered. With regard to the spatial design of this slope, the same applies as in the slants 7.2.2 and 7.3.3. About the z-axis of the stop 7.6, the deflection bevel 7.4 and the Umlenkrippen 7.3 and 7.2 distributed so that the insertion of the wire in the conductor chamber 7.1 is possible with little effort. Another important part of the conductor chamber 7.1 is the guide surface 7.5, the function of which is to guide the cutting clamping flanks 1.4 and to prevent their deflection in the spring direction when penetrating into the wire. The extension of the guide surface 7.5 in the z-direction is at least as long as the Penetration depth of the insulation displacement terminals and preferably ends at the lower surface of the Umlenkrippe 7.2. The fact that the Umlenkrippe 7.3 is located about halfway up this penetration, it is achieved that the metallic conductor is touched at least once or even several times in the z-direction of the insulation displacement, which leads to an increase in the contact reliability. Corresponding to the guide surface 7.5, the strand holder 7 has openings 7.5.1 in the direction of the insulation displacement terminals 1.4, whereby the insulation displacement terminals 1.4 can penetrate into the corresponding conduit chambers 7.1. The outer contour of this opening 7.5.1 forms either over its entire circumference, or only over parts of it - for example, when the insulation displacement edges are guided or supported at specific locations - the outer contour of the insulation displacement terminal 1.4, the remaining sections, so to speak "air" Cutting clamp 1.4 may have. Important with regard to the production of the strand holder 7 by injection molding is the fact that the xy projection of the inner contour of the opening 7.5.1 - taking into account the Entformschrägen required in the tool - on the one hand with the projection of the chamber boundary 7.4.1, which extends over the deflection 7.4 extends to the deflecting rib 7.2, matches; On the other hand, this inner contour coincides at least with the lower side edge 7.2.3 of the deflecting rib 7.2. The opening 7.5.1 is provided with circumferential chamfers 7.5.2, which prevent Ankanten the penetrating insulation displacement terminals 1.4. Also towards the insulation displacement terminals 1.4, the strand holder 7 has at each conductor chamber 7.1 further openings 7.8, the number of which is higher, preferably equal to the number of deflection ribs 7.3. It is of particularity that their contour, taking into account the Entformschrägen required in the tool is greater preferably equal to the xy projection of the Umlenkrippen 7.3. It is to be noted in any case that the openings 7.8 are not so large that the thinnest to be connected line core can be pushed through them, whereby the stop 7.6 would lose its meaning. If it is further ensured that the xy projections of the deflecting ribs 7.2 and 7.3 and the deflecting bevel 7.4 and the stop 7.6 do not overlap, the conductor chambers 7.1 or the entire strand holder 7 can be in a very high functional density in a particularly simple manner over the longitudinal axis " to demould. Further features of the strand holder 7 are the coding or anti-rotation 7.9, the guide surface 7.16 and the stop surface 7.15, which are in connection with the contact carrier 2 of importance. The groove 7.10 serves to receive or guide the contacting element, not shown here. The groove-like recesses 7.11 also represent a coding or an anti-rotation. The surfaces 7.12 are gripping surfaces on which the strand holder 7 can be pulled out of the contact carrier 2 of the plug or the socket. At the bearing surfaces 7.13 turn the strand holder 2 is pressed into the equipped with insulation displacement terminals 1.4 contact carrier 2 inside. The test bore 7.14, which has a conical shape over a part of its length, serves the user to determine whether the diameter of the cable cores present to him are suitable for the conductor chambers 7.1 of the strand holder 7. The conical surface 7.17 has the function of fixing a contacting element in the z-direction in such a way that a radial force component is generated in the direction of the plug center axis, ie toward a cable shield of the cable. The surface 7.17 may alternatively be designed differently, such as just.

In a preferred embodiment, as in the Figures 2 and 3 is shown, the strand holder 7 a plurality of conduit chambers 7.1, each conduit chamber 7.1 receives one end of a line wire, which is contacted with the insulation displacement terminal and around a central conduit chamber around 7.1 further conduit chambers 7.1 are arranged symmetrically. In such an embodiment, the inventive design of the contact element 1, as shown for example in FIG FIG. 1 is shown. Due to the slim elongated shape of the contact element 1 and the substantially axial insulation displacement contact with the likewise axially aligned conductor wire allows in contrast to the known cutting terminals of the prior art and their arrangement in the strand holder, the arrangement of a central contact element and thus a middle pole of the plug or the socket. Around this central contact element can be arranged symmetrically (for example, in a square shape or lying on a circular path), the other contact elements and thus the other poles of the plug or the socket, especially in the transmission of high data rates or at the transmission of signals with high frequencies in the megahertz or gigahertz range particularly advantageous effect. This beneficial effect is further assisted when the entire plug or socket is shielded (ie, the elements in FIG. 2 and 3 are shown, in a metallic housing of the plug or the socket are arranged) or via a contact element (in particular the middle contact element, a shield or a ground connection is made).

• Eine Steckverbindung kann einerseits aus einem Stecker und einer Buchse bestehen, die mittels der Schnellanschlußtechnik am Ende einer Leitung angeschlossen werden und zur elektrischen Kontaktierung der Kabel miteinander zusammengesteckt, zusammengeschraubt oder dergleichen werden. Derjenige Teil einer speichen Steckverbindung, der mit einem Stecker zusammengebracht wird, kann anstelle von "Buchse" auch als Leitungsdose, Dose, Kupplung bezeichnet werden. Darüber hinaus ist es möglich, daß der Stecker oder die Buchse nicht am Ende eines Kabels mittels Schnellanschlußtechnik angeschlagen ist, sondern fester oder lösbarer Bestandteil eines Sensors, eines Aktuators, eines Gerätes oder dergleich ist. Der Begriff "Stecker" bzw. "Buchse" beinhaltet also alldiejenigen Teile die erforderlich sind, um ein Kabel steckverbinderfähig zu machen. Bei diesen Teilen handelt es sich insbesondere um die Kontaktelemente, die im Kontaktträger festlegbar oder festgelegt sind, den Litzenhalter und ein Gehäuse des Steckers oder der Buchse, in dem die Eingangs genannten Teile integriert sind, wobei auch noch weitere Bestandteile (wie beispielsweise eine Überwurfmutter oder eine Überwurfschraube zur Verschraubung einer Steckverbindung, eine Zugentlastung und weiteres) vorhanden sein können.

In the preceding description, the terms "plug" and "socket" have been used in the following context:

• A connector may on the one hand consist of a plug and a socket, which are connected by means of the quick connection technology at the end of a line and for electrical contacting of the cables plugged together, screwed together or the like. The part of a spokes connector which is brought together with a plug, instead of "socket" can also be referred to as a connector, socket, coupling. Moreover, it is possible that the plug or the socket is not struck at the end of a cable by means of quick connection technology, but is a fixed or detachable part of a sensor, an actuator, a device or the same. The term "plug" or "socket" thus includes all those parts that are required to make a cable connector compatible. These parts are, in particular, the contact elements which can be fixed or fixed in the contact carrier, the strand holder and a housing of the plug or the socket in which the input parts are integrated, whereby also other components (such as a nut or a cap screw for screwing a connector, a strain relief and more) may be present.

Claims (14)

1. Contact element (1) for a male connector or a female connector of a plug-type connection relating to quick-connect technology, the contact element (1) being arranged in a contact carrier (2) and having a region for making insulation displacement contact with a line core, a litz wire holder (7) having at least one line chamber (7.1) for the end of the line core, and the contact element (1) making contact with the line core located in the line chamber (7.1), the contact element (1) having at least two insulation displacement flanks (1.4), which have a curved and/or polygonal cross section in cross section and which make contact with the line core approximately in the axial direction, characterized in that the line chamber (7.1) has means which, in interaction with the deflecting bevel (7.4) and in interaction with one another, cause the line core to be deflected out of its longitudinal extent when inserted into the line chamber (7.1), and the means are protrusions or ribs, which are arranged on the wall of the line chamber (7.1), in relation to one another and in relation to the deflecting bevel (7.4), one above the other in the longitudinal direction and/or offset with respect to one another in the circumferential direction, the line chamber (7.1) having a stop (7.6).
2. Contact element (1) according to Claim 1, characterized in that the insulation displacement flanks (1.4) have a cross section in the form of a ring segment or a circle.
3. Contact element (1) according to Claim 1 or 2, characterized in that the insulation displacement flanks (1.4) have an elliptical cross section.
4. Contact element (1) according to one of Claims 1 to 3, characterized in that the insulation displacement flanks (1.4) have a cross section approximately in the form of an L.
5. Contact element (1) according to one of Claims 1 to 4, characterized in that the insulation displacement flanks (1.4) have a cross section approximately in the form of a U or a C.
6. Contact element (1) according to one of Claims 1 to 5, characterized in that the insulation displacement flanks (1.4) can be fixed in their position at least partially in the litz wire holder (7).
7. Contact element (1) according to one of the preceding claims, characterized in that the line chamber (7.1) is tapered at one end, via a deflection bevel (7.4), towards a cross section in such a way that the insulation displacement flanks (1.4) pass through the end of the line core.
8. Contact element (1) according to one of the preceding claims, characterized in that the insulation displacement flanks (1.4) are aligned substantially in the axial direction of the male connector or of the female connector.
9. Contact element (1) according to one of the preceding claims, characterized in that an insulation displacement slit (1.5) between two insulation displacement flanks (1.4) has, in its profile, at least partially the same width and/or at least partially increasing and/or decreasing width.
10. Contact element (1) according to Claim 1, characterized in that the transverse projections of the deflecting bevel (7.4), of the stop (7.6) and of these means have such a shape and size that they do not overlap one another.
11. Contact element (1) according to one of the preceding claims, characterized in that the line chamber (7.1) has a widened portion (opening 7.5.1) in the region in which the insulation displacement contact is inserted.
12. Contact element (1) according to one of the preceding claims, characterized in that the line chamber (7.1) has a widened portion (7.7) in the region in which the line core is inserted.
13. Contact element (1) according to one of the preceding claims, characterized in that the litz wire holder (7) has a plurality of line chambers (7.1), further line chambers (7.1) being arranged symmetrically around a central line chamber (7.1).
14. Contact element (1) according to one of the preceding claims, characterized in that the litz wire holder (7) has a plurality of line chambers (7.1) arranged symmetrically around the longitudinal axis.

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