DE102007041814A1 - Device for stripping-free production of a connection to a flat cable - Google Patents

Abstract

A device for stripping-free production of a connection to a flat cable (4), which has at least one shielded data line (8) with one or more wires (9). It has for this purpose at least one tap contact (10). The latter is designed to be electrically conductive at its free end and equipped at its flank region with an insulation (27) to avoid a short circuit between the wire to be contacted (9) and the shield (27). The tap contact (10) is arranged non-rotatably in a pressure plate (6), so that the production of the terminal by applying force to the pressure plate (6) to the flat cable (4) out and a concomitant intrusion of the tap contact (10) in the flat cable (4). he follows. The tapping contact (10) has at its free end on a cutting edge (30) which extends in the longitudinal direction of the flat cable (4) or slightly inclined thereto, and it widened, seen in cross-section perpendicular to the cutting edge (30).

Description

The The present invention relates generally to terminal devices, and more particularly to a device for insulation-free manufacture a connection to a flat cable, the at least one shielded Data line with one or more wires.

Connection devices, with which a continuous flat cable without tearing of the wires and without removal of wire and cable insulation can be tapped, have been known for over 30 years. An early publication in this respect from the applicant's home is, for example, the German patent application DE-AS 2 206 187 , This publication was only about the tapping of power lines, so lines with unshielded wires. Tapped screws were used as tapping contacts. The connection was made by the connecting device with its housing - initially without the contact screws - placed on the cable and then the cable was also enclosed on the back of a housing plate. Finally, the tapping was done by the guided in the housing with internal threads contact screws were screwed into the flat cable. They penetrated with their tip first the outer insulation of the flat cable, then the respective core insulation, and finally penetrated with the tip in the head of each vein. This contacted the vein in question.

A further development of this basic form is from the EP 0 665 608 B1 known. Due to the use of digital processor controls in building installation technology, which had started in the meantime, the idea had arisen to tap data lines in a corresponding manner, in addition to power lines. In order to make it possible for the wires of the data line (which is, for example, a symmetrical pair line) to be at any desired longitudinal position of the cable with a tap contact, they are not twisted together, as is usual in such data lines parallel to each other in the median plane of the flat cable. In view of the lack of twist magnetic coupling, z. B. to keep within acceptable limits of the running in the same flat cable energy transmission cores, the data line to the outside, that is also shielded from the running in the flat cable energy transmission cores.

The tapping takes place as in the above-mentioned DE-AS 2 206 187 by screwing in contact screws. So that the contact screws do not produce short circuits between the contacted wire conductors and the shield, they are equipped with a layer of insulating material on the shaft.

In the course of further development then matured the realization that the screwing in of individual contact screws causes a relatively high installation costs. For example, the DE 201 11 496 U1 and the corresponding one EP 1 276 173 A2 - according to which the preamble of claim 1 has been formulated - that from the above EP 0 665 608 B1 known tapping device to the effect that the former contact screws are now replaced by fixed in a housing plate "tapping spikes". The actual contacting process is no longer done by screwing individual contact screws, but - in one operation together for all tap contacts - by pressing the contact pins supporting the housing plate on the flat cable. As far as the taps serve to tap the data line, they are - analogous to the above EP 0 665 608 B1 - Provided with insulation on its shaft. Mentioned in the DE 201 11 496 U1 the problem that the shield could be pulled inward from the contact tip during piercing, thus causing a short circuit; as a countermeasure, a particularly acute-angled design of the respective contact mandrels is proposed (page 20, lines 28-32).

The latter problem is also the WO 2004/042872 A1 However, again based on the principle of contacting with screws. In order to avoid pulling the shield towards the conductor, this document proposes a contact screw externally threaded on the outside of the isolated area. The pitch of the external thread is greater than that of the screw thread, which ensures the feed when screwing in the contact screw. When screwing the contact screw so it comes to a kind of drill effect, which promotes the material in the penetration area - and thus also potentially short circuit-generating parts of the shield - to the outside.

In the proposals mentioned so far, the contact elements have the basic shape of rotational bodies. In addition, it is also known to produce contact elements from sheet metal (eg by punching), see for example the EP 0 726 623 A1 , The resulting contact tips are flat and have a constant thickness, namely the sheet thickness. Such flat contact elements are used - as far as visible - only the tapping unshielded cables.

A further development in terms of impressing fixed in a housing plate arranged contact elements can be found in the WO 2005/057729 A1 That is, here for ease of Eindrückvorgangs a lever actuator is integrated into the housing. The housing plate is articulated on one side of the housing; with the help of a hinged on the other side of the housing fork lever, which engages in the housing, the housing plate can be pressed with the fixed contact elements with relatively little effort in a pivoting movement on the cable. This is about the contacting of flat cables, which have only high voltage wires.

Of the present invention is a problem (technical problem) the Provision of a simple and safe to install connection device based on the type mentioned.

The The invention relates to a device for stripping-free production a connection to a flat cable, the at least one shielded Data line with one or more wires. The device points to this for the stripping-free penetration of shielding and insulation and for contacting a core at least one Tapping on. The tapping contact is electrical at its free end conductive, and is at its flank area with a Isolation is equipped to make a short circuit between avoid to contact the wire and the shielding. The tap contact is arranged on a pressure plate that the production of the Connection by applying force to the pressure plate to the flat cable towards and a concomitant penetration of the tap contact in the flat cable takes place. The tapping contact has a cutting edge, in the longitudinal direction of the flat cable or slightly inclined to this runs. The tapping contact widens, seen in cross section perpendicular to the cutting edge.

One Another aspect of the invention relates to a device for stripping-free Making a connection to a flat cable, the at least a shielded data line having one or more wires. The device has for this purpose for stripping-free penetration shielding and insulation and contacting a wire at least one tap contact. The tapping contact is at his free end is electrically conductive, and is at its flank area equipped with an insulation to a short circuit between the wire to be contacted and the shield to avoid. The tapping contact is arranged on a pressure plate, that the production of the connection by applying force to the pressure plate towards the flat cable and a concomitant intrusion of the tap contact into the flat cable. The pressure plate is one-sided in a joint stored, so that the impressions of the at least one tap contact by a pivoting movement of the pressure plate to the flat cable out he follows. The tapping contact is displaceable on the pressure plate is arranged to allow a relative movement between tapping contact and Flat cable in cable longitudinal direction when penetrating into the To avoid flat cables.

Further Features go out for the expert reader the following detailed description of embodiments and the attached drawing.

embodiments The invention will now be described by way of example and with reference to FIGS attached drawing, in which:

1 is a perspective view of a first embodiment of a connection device with fixedly arranged on the pressure plate tap contacts in the open state;

2 a corresponding view of a cross section along the line II-II in 5 is;

3 and 4 Views according to the 1 respectively. 2 but are of the closed state of the terminal device;

5 is a front view of the connecting device in the open state;

6 an enlarged section of 2 in the field of tapping contacts;

7 an enlarged section of 4 in the area of the tap contact;

8th an enlarged section of 5 in the field of tapping contacts;

9 Cross sections of the tap contact the 6 - 8th perpendicular to the direction of the sheep at different heights;

10 illustrates a tapping contact with a slightly inclined cutting edge;

11 illustrates a tap contact with a cutting edge composed of two inclined cutting portions, which has a convex shape;

12 illustrates a tap contact with a cutting edge composed of two inclined cutting sections, which has a concave shape;

13 illustrates a curved blade tapping contact;

14 Embodiments of tapping cone illustrated in which refers to the parallelism or inclination of the blade to a fully or partially open state of the tap;

15 a view of a second embodiment in the open state accordingly 2 shows, wherein the tap contacts are arranged on a carriage in the pressure plate;

16 a view of the second embodiment, but in the closed state accordingly 4 shows;

17 a perspective top view of the pressure plate of the second embodiment in the open state of 15 shows; and;

18 a perspective top view of the pressure plate of the second embodiment accordingly 17 , but now in the closed state of 16 shows.

1 illustrates a connection device in the open state in a perspective view. Before a detailed description of the 1 and the remaining figures will first be followed by various explanations of the embodiments.

In practice, it has been shown that with piercing contacts by type of the above DE 201 11 491 U1 the problem of avoiding short circuits between the shield and the conductors of the data wires is not optimally solved. Therefore, in practice until today for the contacting of shielded data wires usually contact screws, z. B. by type of said WO 2004/042872 A1 used in which a pull-in of the shield by means of said drill effect is reliably avoided. The inventor has now recognized other ways in which the pulling in of the shield when contacting data lines can be avoided, without requiring a screwing in of the contact elements would be required. One of these other possibilities, as far as the underlying physical mechanisms are already understood, is based on a shear effect. For this purpose, the tapping contact at its free end on a cutting edge, which is parallel to the flat cable or slightly inclined to this. Presumably, when using acute-angled rotary body on the type of tap contact the DE 201 11 496 U1 . 14 , the shield - which is usually at least partially made of an elastic material, eg. B. a metallized plastic film is - when penetration of the tap contact to strain (ie in the normal voltage direction) claimed. The corresponding would apply, if one thought, the acute-angled sheet metal contact the EP 0 726 623 A1 in the flank area and to use for the contacting of shielded data wires. On the other hand, in the embodiments, in that a cutting edge is provided, and this cutting edge runs parallel or slightly inclined to the longitudinal direction of the flat cable, a significantly greater shear stress (ie a force application in the direction of shear stress) of the shielding material takes place. Since the shielding material - like most flexible and elastic materials - usually has a lower strength than shear stress compared to normal stresses, it comes when acted upon by the parallel or slightly inclined cutting edge of the shielding material (ie for its separation) as to its elastic Deformation, while the latter, for example, when using the acute-angled tap contacts on the type DE 201 11 496 U1 . 14 , should prevail. Due to the widening formation of the tapping contact, in a transverse plane (ie viewed in cross-section perpendicular to the cutting edge), the shield thus separated together with the surrounding insulating material is spread apart transversely to the direction of penetration. A cross-sectional broadening is in pointed bodies of revolution on the type of tap contact the DE 201 11 496 U1 . 14 , also present in cross section; elongated tapping contacts as in the WO 2005/057729 A1 however, usually have no such cross-sectional broadening. By separating the shield with the parallel or slightly inclined blade and the subsequent spreading apart of the two resulting cut edges, as mentioned in tests, the above-mentioned problem of pulling in the shield at fixed tap contacts solved in a surprisingly effective manner.

at In the embodiments, the cutting edge is in an imaginary Plane passing through the wire to be contacted and the direction of penetration is spanned. This means that in embodiments With a slightly inclined edge, the cutting edge and the one to be contacted Vein not run askew to each other, but together lie in one plane.

Said shearing effect is most evident in those embodiments in which the cutting edge in the longitudinal direction of the flat cable, that is not inclined to this runs. However, the shear effect does not disappear abruptly, if one arranges the cutting edge inclined to the flat cable longitudinal direction. At very large angles of inclination, such as in the DE 201 11 496 U1 . 14 , and the WO 2005/057729 A1 On the other hand, such a shear effect is unlikely to play a significant role. From which angles of inclination the shielding to an unacceptable extent is pulled inward, is a question of the shielding and insulating materials used, the exact contact form, etc., and can be found in individual cases by simple experiments. According to the current state of knowledge, it is assumed that the present invention still works satisfactorily at least up to inclination angles in the range of 10-30 °. The "slightly inclined" course of the cutting edge is therefore here understood to mean the angle of inclination of the cutting edge relative to the cable longitudinal direction which is less than or equal to 30 °, preferably less than or equal to 20 °, and particularly preferably less than or equal to 10 °.

at In some embodiments, the cutting edge has the shape of a single straight line piece. In other embodiments the cutting edge can consist of several different inclined straight sections be composed. For example, a cutting edge shape is possible in the manner of a "V", with this either on top stand or rotated 180 °. It is also possible, several "V" to string together, so a total of serrated form arises. Refer to the above angle specifications each on the individual straight sections of the cutting edge; It is in the examples given so strictly speaking around very flat "V".

at some embodiments includes - how will be explained in more detail below - on the cutting edge is more inclined on one or both sides insulating cutting edge on.

at Other embodiments, the cutting edge runs not straight or piecewise straight, but has a curved Shape, for example the shape of a circle section or ellipse section or a section of another basket arch shape (ie a shape, their radius of curvature from the edges to the middle increases). In some of these embodiments the cutting edge continuously into the more curved Cutting edge continues; both together then have z. B. the shape of a Semicircle, a half ellipse or other basket arch shape. Strictly speaking can be in the latter embodiments in the absence of a "kink" (as a sudden change the slope) no exact border between the as "cutting edge" and the Specify areas designated as the "cutting edge". At least that leaves but notice that a tap contact with curved Cutting edge - if he is in the middle (ie where he first penetrates into the flat cable) has a relatively large radius of curvature - a has relatively long mid-range in which the cutting edge is not or only slightly inclined to the cable longitudinal direction. Where you also the border to the more inclined cutting edge like to pull, there is thus a not or slightly inclined cutting edge, the in their function of the above related to straight, not or little inclined cutting corresponds. Because of the parallelism or only slight inclination of this curved central region namely, it comes with such curved bleed contacts to the shear effect described above. A in this sense "relatively large Radius of curvature "is, for example, when the radius of curvature a tap contact in the middle larger or equal to half the extension of the bleed contact in Longitudinal direction (note: for a semicircle the radius of curvature is uniformly equal to half the length of the bleed contact; at an elliptical halfbow with the major axis of the ellipse in the longitudinal direction is the radius of curvature z. B. larger in the middle as half the extension of the tapping contact in the longitudinal direction).

A tip (eg the tip of the contact element 32 from 14 of the DE 201 11 496 U1 ) is punctiform in the region of its extremum, and thus has no extension in the longitudinal direction, in the case of an imaginary ideal tip. In practice, a peak will be more or less rounded, but in order for it to still act as a peak, its radius of curvature will generally be far below the above values. A tip on the type of contact element 32 from 14 of the DE 201 11 496 U1 So no cutting with no or only slightly inclined course to the cable longitudinal direction is.

Provided The length of the cutting edge in the longitudinal direction clearly can be specified (such as for a straight edge), so this length is preferably larger or equal to half the diameter of the conductor to be contacted Vein, and more preferably greater than or equal to this diameter. For practical reasons, the length will be the cutting edge usually 5 to 20 times the diameter of the conductor do not exceed.

In some embodiments, the isolated flank area widens in the transverse plane. In embodiments in which the broadening already begins at the electrically conductive contact region, ie at the cutting edge, this broadening thus continues into the insulated flank region, for example at least up to the height of the shield (the latter based on the contacted state of the connecting device). , In other words, therefore, the widening formation of the tap contact is not restricted to the electrically conductive contact area, but also extends into the insulated shaft area. By contrast, in the case of the solutions with insulated tapping contacts which have become known in the prior art, the insulation is in each case only in the cylindrical region of the tapping contacts; it does not expand (one exception is only the one mentioned at the beginning) WO 2004/042872 A1 , the However, based on a different principle of action, namely the said drill effect). In other embodiments, the electrically conductive contact area is not broadened in the transverse plane (ev. Apart from a sharpening of the blade); Here, the isolated flank area alone ensures this broadening.

at some embodiments with widening contact element exists between the electrically conductive free end (also Called "contact end") and the insulation a stepless transition, so that the contact end and the insulation in terms of shaping to form a unitary body. For those of you Embodiments in which the broadening already in the electrically conductive contact area begins, thus follows on the Cutting the cable and wire insulation as well as the shielding immediately spreading the cable in a continuous process, the - on the depth of the cable to be tapped, in which the shield lies, - started from the metallically conductive contact end and continues from the isolated edge.

As has already been discussed above, in some embodiments at the not or only slightly inclined cutting a more inclined Insulating cutting edge (with two-sided connection: two insulating edges) Cutting edges). In some of these embodiments the inclination change takes place between the cutting edge and the cutting edge abruptly, so in the manner of a Knicks (where this kink at the point of transition from conductive to insulating Material can be, but not necessarily). Alternatively done at others Embodiments (eg, those with a curved edge) the change in inclination between the cutting edge and the cutting edge continuously, d. H. without kink.

at In some embodiments, the entire cutting edge (or the entire part of the cutting edge, which in the head of the to be contacted Core penetrates) is electrically conductive; only the flank is insulating. But this is not absolutely necessary; at other embodiments is thus only a part of the cutting edge (or only part of the conductor to be contacted in the conductor penetrating part of the cutting edge) formed electrically conductive is the other part thereof, however, is insulating. The Cutting edge is z. B. partially made of insulating material, and z. B. only central portion of the cutting edge is made of conductive material. For example, a curved cutting edge can be made in one piece be made of insulating plastic material, in which an electric conductive metal pin is inserted, which at the lowest at the in the flat cable penetrating point a part of the cutting surface forms.

In some embodiments, the tapping contact also in the longitudinal plane, ie the imaginary plane, which is spanned by the cutting edge and the penetration direction, a widening shape. As already mentioned above, the insulation forms at its boundary in the longitudinal plane at least one cutting edge. For example, at the two ends of the elongated tap contact in the longitudinal plane in each case an insulating cutting edge. These insulating cutting edges, as the tapping contact penetrates into the core insulation, extend the cut initially created by the blade in the shield, the length of the cut increasing with increasing penetration due to the expanding nature of the tap terminal insulation. The tap contact has thus z. B. the shape of a boat. Although, in some embodiments, these insulating cutting edges are more inclined to the cable longitudinal direction than the cutting edge (eg, greater than 30 °), due to the shuttle shape associated with this cutting extension, the shield spreads so that, despite the greater inclination of the shield insulating cutting edges, the shield is not pulled inward, but pushed away to the side. This applies mutatis mutandis to embodiments with a curved cutting edge, in which - as mentioned above - the cutting edge continuously in a region of greater inclination - namely the cutting edge - continues. In some embodiments, the pressure plate, as in the aforementioned WO 2005/057729 A1 , hinged on one side, so that the impressions of the tap contacts in the flat cable to be contacted by a pivoting movement of the pressure plate to the flat cable out.

With such a pivoting movement is a certain change the angular position of the tap contact. The cutting edge is standing So in the position in which it cuts through the shield, in one slightly different angle than in the end position in which they are in the ladder to come to rest. The size of this angle change depends on the path difference between the two positions relative to the length of the lever arm, via the tap contact is articulated. As a rule, this is due to typical dimensions Angle change to be relatively small; in the illustrated For example, it is less in embodiments as 10 °.

at some embodiments now relate to the struck Definitions for the angle of the cutting edge (parallel / slightly inclined or 30 ° / 20 ° / 10 °) to the angular position the cutting edge in the finished contacted state of the tap contact.

Alternatively, the definitions made for the angle of the cutting edge (parallel / slightly inclined or 30 ° / 20 ° / 10 °) refer to the Win kelstellung, which has the cutting edge when it penetrates the shield.

at some embodiments with articulated pressure plate occurs during the pivoting movement for pressing the tapping contacts at the proximal to the joint lying insulating cutting edge relative to the cable an additional component of motion towards the joint (this depends on the location of the Joint off - the said component of motion occurs z. B. when the hinge is above the contact end of the tap contact lies). The "proximal cutting edge" is the one facing the joint Cutting edge. To explain the term "additional Movement component "is the following: When pressing a in the widening from the contact end to the shaft tapping - only with a translational movement, ie without pivoting movement - would result on an obliquely outwardly extending cutting edge during the pushing-in movement, a direction transverse to the direction of pushing Directed movement component, solely due to the inclination the cutting edge. On the other hand, there would be a corresponding one Arrangement of the joint presupposed - during a pivoting movement even with a non-inclined cutting edge, solely due to the pivoting movement, a movement component in Direction to the joint. In embodiments with in the longitudinal plane inclined cutting edge so there are possibly two Contribution to the motion component in the cable longitudinal direction to the joint, one of the skew of the cutting edge and the other comes from the pivotal movement. The second Contribution is the one above as the "additional component of movement" has been named.

At the proximal cutting edge of the tap contact is thus added this additional component of motion to that of the originating skew the cutting edge while at the distal cutting edge to subtract from that. To make up for this and so on both cutting edges approximately the same size Total motion component in cable longitudinal direction to joint In some embodiments, the proximal one has to be created Cutting edge relative to a lower inclination in the longitudinal plane to the indentation direction of the tap contact as the distal to the joint lying cutting edge. This difference in inclination serves So the compensation of said additional movement component. In some embodiments, this slope difference even go so far that the proximal cutting edge is not oblique runs.

Of the Inventor has recognized another (other) measure, such as pulling in the shield when contacting data lines can be avoided without this turning in of the contact elements would be required. This further measure works from the knowledge that with connecting devices with hinged mounted pressure plate the above-mentioned additional movement component in cable longitudinal direction for pulling the Shielding can be responsible, and solves this problem Thus, the additional movement component by a movable Arrangement of the tap contact not to occur.

Even though this other measure to avoid pulling in the shield most effectively with little or no inclined cutting of the type described above, shows an improvement in terms of the "pull-in problem" already by the Elimination of the additional movement component, ie also when using differently shaped tapping elements, for example acute-angled tapping elements. For this reason, the said other measure to eliminate the extra Movement component not only together with the former measure a not or little inclined blade claimed, but also by an independent claim that leaves open whether the tapping element has a cutting edge or what shape a possibly has existing cutting edge, etc.

The Pivoting movement of the tap contact would therefore immovable Storage on the pressure plate to a movement component of the Mizapfkontakts lead in cable longitudinal direction. In some embodiments is the direction of this component of motion so that the tap contact the Penetration in the flat cable would be offset towards the joint. To avoid such a movement component during penetration in the flat cable is the tapping contact in some embodiments slidably disposed on the pressure plate. For example, to avoid said offset to the hinge is in some embodiments the direction of displacement so that the tap contact during penetration is moved in the flat cable relative to the pressure plate away from the joint. To achieve such a shift, the tap contact is in the longitudinal direction of the pressure plate displaceable.

The displacement of the tap contact takes place, for example, by entrainment in the course of penetration: as soon as the free end of the blade engages in the sheath of the flat cable, a relative displacement of the tap contact to the flat cable is practically impossible (because of the intervention would require a relatively large force). The pivoting movement leads to a relative movement between the flat cable and the pressure plate in the longitudinal direction. The early determination of the on zapfkontakts on flat cable causes the tapping contact is taken from the cable, so in the course of further pivoting is moved relative to the pressure plate from the joint away.

There the displacement path of the tap contact i. a. is limited to make sure that the tap contact in the beginning the pivoting movement not already at the distal end of his displacement path stands, because this would be no (further) shift away from the joint. This would be z. B. conceivable that the operator involved in the installation prior to "tapping" manually push the tap contact to its proximal stop, so that he then has the freedom of tapping himself with the cable to move away from the joint. In some embodiments this is to a certain extent automated by the displaceable Tap contact in the pressure plate subjected to force (eg spring loaded) is such that it prevents itself from penetrating the flat cable the application of force (eg spring loading) in those End position of his shift range is then in the course the penetration of a shift of the tap contact to avoid a movement relative to the flat cable in the cable longitudinal direction allowed. For example, the tap contact by a spring for acted upon proximal stop their shift range. The Enforcement is on the one hand sufficiently large to the still freely movable (ie not yet engaging in the cable) To move tap contact on the pressure plate to the proximal stop, But on the other hand is sufficiently small to engage in after Flat cable, the entrainment of the tap contact by the relative movement the cable to the pressure plate (otherwise would the tapping contact cuts the cable lengthways).

at In some embodiments, tap contact is part of a slidable carriage in the pressure plate. In some embodiments the tapping contact is made of a metal molding, the is surrounded at least in the flank region of insulating material. The metal molding is, for example, by casting and Punching / pressing with possibly subsequent machining, z. B. for sharpening the mentioned cutting made.

at In some embodiments, the insulating flank region is the tapping contact with the pressure plate or the carriage in one piece produced. The insulating pressure plate or the carriage has then on his / her side oriented to the flat cable side, for example a surface that is essentially complementary to the outer contour of the flat cable, but at the later Tapping has wart-like or cutting-like projections. By central holes in these projections are at the production z. B. the said metal moldings inserted and back against falling out and contacted. As a result, the bleed contacts are easy to produce. By suitable, matching shaping of metal moldings and tabs in the pressure plate or in the slide can be the top called stepless transition between the through the metal molding formed contact end and the insulation formed by the projection achieve. In the above-mentioned one-piece production of insulating flank areas of the tapping contacts with the pressure plate or the carriage may be, for example, an impression in a common casting process (eg plastic injection molding) act.

1 - 5 : Overall views of a connection device (embodiment with fixed contacts)

Now returning to 1 to 5 , these overall perspective views ( 1 and 3 ) and side views ( 2 and 4 ) of a first embodiment of a connection device 1 with fixed in the pressure plate tapping contacts in the open state ( 1 and 2 ) and when closed ( 3 and 4 ), as well as a front view of the opened state ( 5 ). The connection device 1 is made up of a lower part 2 and a top 3 together, a flat cable to be tapped between them 4 be able to record. Upper and lower part 2 . 3 are initially separate components that have complementary latching cams 19 ( 3 ) can be assembled so that they are about a common pivot axis 18 ( 2 ) from the open state ( 1 . 2 and 5 ) in a closed state ( 3 and 4 ) can be swiveled. The insides of the lower part 2 and the shell 3 each form a pressure plate 5 respectively. 6 ,

The flat cable 4 ( 1 . 3 and 5 ) has an outer contour, which is opposite to a rotation of the flat cable 4 180 ° no symmetry. It has z. B. five in the median plane of the cable 4 juxtaposed power conductors 7 (eg the three conductors of a three-phase system, the return conductor and a protective conductor); in the same plane is also located on one side of the flat cable 4 a shielded data line 8th , It is her z. B. a symmetrical pair line, in the example shown two parallel non-twisted data wires 9 having. The data wires 9 are shared by a shield 22 which is, for example, a conductive (eg metallised) plastic film. Between the individual power lines 7 is located on the outside of the flat cable 4 each a longitudinal recess. No such deepening fin on the other hand, it is between the data wires 9 because there is the shield 22 just goes; this already eliminates possible symmetry with respect to twisting of the cable 4 around 180 °. In addition, in the example shown, between the utmost energy supply vein 7 and the subsequent data line a particularly deep constriction exists; This also acts symmomenteseitend. The pressure plates 5 . 6 have a shape complementary to this cable outer contour shape, so that the flat cable 4 only in a certain orientation in the lower part 2 can be inserted, thus thus a "coding" of connection device 1 and cables 4 achieved. 5 provides a front view of the diagonally upstanding pressure plate 6 , Whose inner contour is complementary to the cable outer contour visible.

About the data wires 9 is in the pressure plate 6 of the top 3 one tap contact each 10 for the data wires 9 provided from the pressure plate 5 to the flat cable 4 protruding directed. The two tap contacts 10 are fixed (ie non-rotating and not movable) in the upper pressure plate 6 arranged. In cable longitudinal direction are the two tap contacts 10 Staggered to the with the impressions of the tap contacts 10 accompanying spreading of the data wires 9 in different places, seen in the cable longitudinal direction to distribute. (Note: In 3 are two bleed contacts 10 shown in 4 however, only one is shown - the reason is that in 3 through the left tapping contact 10 in 5 walks into 4 however by the right tap 10 in 5 ).

Only stylized are in 1 and 5 Anzapfkontakte 20 for the power lines 7 shown. These are designed as non-insulated heavy current contacts, for example, in the manner of the WO 2005/057729 A1 known contacts, so that no further explanations follow. If in the following short of "taps" is mentioned, this always refers to the tap contacts 10 for the data line 8th ,

The top 3 is with a two-sided lever 11 equipped, on a lever axis 12 at the top 3 hinged and this embraces fork-shaped. At the to the flat cable 4 pointing side of the lever has this on both sides of the upper part 3 one fork each 13 on that in a complementary fork recess 14 in the lower part 2 engage and provided there fork abutment 15 Undercut can. At the of the flat cable 4 opposite side of the lever 11 this is with a handle 16 fitted.

The installation of a cable connection using the connection device 1 This is done in the following way: First, the flat cable 4 into the (still separate) lower part inserted. Then become lower part 2 and top 3 on her snap-in cams 19 for the formation of its pivot axis 19 together. Lower and upper parts are initially still in an open position, z. B. at an angle of 15 ° to each other, as in the 1 and 2 is shown. The operator now guides the fork 13 in the fork recess 14 and press the lever 11 down. This will - with force reduction due to the leverage - the upper part 3 on the flat cable 4 pressed so that the tap contacts 10 into the data line 8th penetrate and the data wires 9 contact, and the connection device 1 finally in the in the 3 and 4 shown closed state comes. The connection device 1 is thus already in its final state; one over the handle 16 to slide locking 17 prevents the connecting device 1 could return to their open position. The actual installation of a connection is thus - after inserting the cable and joining the device - without tools with only one hand movement feasible.

The connection device 1 points to the top 3 an outlet socket 21 , which is coded, for example according to one of the common industrial power systems (eg. B. Wieland ^{®, ®} or Wago Ensto ^®). In the data line 8th For example, it is an EIB, LON or CAN bus. At the connection device 1 For example, it may be a so-called actuator, ie a device that is equipped with one or more control-actuated switches for the output socket 21 branching power conductors is equipped. The control signals for switching on and off come as signals z. B. according to the EIB, LON or CAN standard on the data line 8th , With such an actuator z. B. electrical lighting and devices by control signals z. B. be remotely controlled by a building management center on and off. In another possible application is the connection device 1 designed as a sensor device, and is z. B. in the upper part 3 equipped with a suitable sensor (eg temperature sensor). The signals of this sensor can be transmitted via the data line 8th z. B. transmitted to a building control center. Alternatively or additionally, it is also possible external sensors or devices that provide measurement or status signals, via the outgoing socket 21 at the connection device 1 are to be connected. These signals are then received by the connection device 1 in through the data line 8th fed bus formed.

6 - 9 : Detail views of the bleed contacts of 1 - 5

In a section along the line II-II of 5 , ie along the cable direction, shows 6 the data line 8th containing part of the flat cable 4 in the not yet contacted state; ie the tap contacts 10 are still outside the flat cable 4 , 7 shows a similar sectional view, but in the contacted state, ie the tap contact shown 10 is in data line 8th penetrated and contacted the leader 23 the data wire 9 , 8th shows a detailed view of the tap contacts 10 and the cut flat cable 4 from the front. The 6 and 7 So show a section in the longitudinal direction, while the 8th shows a section in the transverse direction.

The structure of the flat cable 4 in the field of data transmission 8th is in 7 shown in more detail. Seen from the inside out follows the central ladder 23 a core insulation 24 , This is designed so that it integrally both conductors 23 the data line 8th while having the cross-sectional shape of a rectangle with rounded corners ( 8th ). In other embodiments, each conductor is 23 each surrounded by its own circular in cross-section core insulation, wherein the two cores thus formed are then embedded in an intermediate sheath, the outer contour of the conductor insulation 24 from 8th equivalent. To the rectangular insulation 24 (or possibly the correspondingly shaped intermediate jacket) is the shield 22 arranged. This consists for example of a metallized plastic film and is optionally additionally equipped with a Beidraht and / or a braided shield. Finally, the shield 22 from a cable sheath 25 wrapped, the one-piece jacket of the entire flat cable 4 (So also the power lines 7 ).

The 6 and 7 So show a section in the longitudinal direction, while the 8th shows a section in the transverse direction.

The tap contacts 10 are essentially composed of two parts, namely a metal molding 26 and an isolation 27 , The metal molding 26 has an elongated, essentially composed of two cylinder sections shank 28 and a contact piece 29 on, at the free end of the shaft 28 is formed. The contact piece 29 running - in the transverse direction ( 8th ) - towards the free end pointed, and thus forms a cutting edge 30 , Otherwise, the cutting edge 30 on both sides in each case a strongly inclined cutting edge 31 which is formed by insulating material. In the finished contacted state ( 7 ) the cutting edge runs 30 in the embodiment of the 6 to 8th parallel to the direction of the conductor 23 , ie parallel to the cable longitudinal direction. The cutting edge 30 lies in an imaginary plane through the conductor to be contacted 23 and the penetration direction is clamped. This means that - how to get in 8th can see - the cutting edge 30 in the open state of the connecting device in the center over the conductor to be contacted 23 stands, and when penetrating into the flat cable 4 the leader 23 penetrates in the middle.

The length 1 ( 7 ) of the cutting edge 30 in cable longitudinal direction is in the in the 6 to 8th illustrated embodiment, about 1.7 times as the diameter d of the conductor 23 ; In absolute terms, this means, for example at d = 1.5 mm, that l = 2.6 mm.

The isolations 27 all tapping contacts 10 are integral with the pressure plate 6 of the top 5 prepared, for. B. by injection molding of a suitable insulating plastic. After injection molding and, if necessary, drilling out of the insulation 27 is to complete a tap contact 10 only the metal part 26 from the cable side and secure against falling back.

The isolation 27 surrounds the shaft 28 of the molding 26 and thus forms an insulating edge of the tap contact 10 that only the cutting edge 30 and the contact piece leading to it 29 uncovered, with the extension of the latter in the direction of the shaft approximately equal to the diameter d. In cross-section ( 8th ) widens the contact piece 29 from the cutting edge 30 to the shaft 28 out. This broadening is infinitely in the isolation 27 so that the tap contact 10 has an overall uniformly widening shape in the transverse direction. This serves, as stated above, the spreading of cable sheath 25 , Shielding 22 and core insulation 24 during the tapping process.

In section in the longitudinal direction ( 6 and 7 ) is the contact piece 29 in the embodiment of the 6 to 8th essentially rectangular, thus has no broadening. The isolation 27 widened however to the pressure plate 6 out. Also with respect to the contour in the longitudinal direction is a stepless transition from the contact piece 29 to the widening isolation 27 , The lateral, strongly inclined edges of the insulation 27 , in longitudinal section ( 6 and 7 ) are considered cutting edges 31 educated. In a cross-section of the tap contact 10 perpendicular to the direction of movement ( 9 ) the isolation is running 27 on both sides of the molding shaft 28 pointed, and thus forms the said cutting edges 31 , The function of the cutting edges 31 lies in it, the one from the cutting edge 30 initially lengthened cut to extend while the tap contact 10 deeper into the flat cable 4 penetrates.

At the in 6 to 8th illustrated embodiments is the broadening of the tap contact 10 in section in the longitudinal direction asymmetrically to the shaft axis; namely, the angle of inclination (relative to the shaft axis) of that cutting edge 31a , the axis of rotation 18 facing (ie the proximal cutting edge), smaller than that of the other, from the axis of rotation 18 facing away cutting edge 31b (ie the distal cutting edge). These different cutting edge angles take into account that the proximal cutting edge 31a when closing the connection device 1 a component of movement to the axis of rotation 18 learns from the location of the axis of rotation 18 above the pressure plate 6 arises. Due to this asymmetry, the length of the two cutting edges 31a , b ultimately produced cuts about the same.

9 shows cross sections of the tap contact 10 perpendicular to the shaft direction, wherein the outer contours of the metal molding 26 (solid lines) and the insulation 27 (dashed lines) are shown in the manner of contour lines. The contour line at S1 shows a section at the height of the cutting edge 30 , the contour line S2 shows a section through the contact piece 29 and the contour lines S3 and S4 show two sections through the isolated area of the tap contact 10 ,

The closing process begins with the in 6 shown position. As the tapping contact penetrates, the cutting edge cuts through 30 one after the other in the cable sheath 25 , the shielding 22 and the core insulation 24 and finally penetrates the ladder 23 one. The inclined cutting edges 31a , b lengthen the cut, with the cut length increasing toward the outside of the cable. Due to the transversely widening shape of the tapping contact 10 the cut-open material is spread apart in the area of the cut, whereby the extent of the spread also increases towards the outside of the cable. With the penetration of the tap contact 10 it comes due to the aforementioned spreading to a force application of the flat cable 4 to the pressure plate 5 , This application leads to a permanent elastic deformation of the flat cable 4 such that the leader 23 in the area of the tapping point to the lower pressure plate 5 is moved ( 7 ). The displacement distance is z. B. about half of the conductor diameter d. The underlying layers of the cable 4 (Core insulation 24 and coat 25 ) are compressed accordingly. The extent of the tap contact 4 from the pressure plate 6 (called "height") takes into account this shift of the leader 23 , In the embodiments shown, the height of the tap contact is so large that the cutting edge 30 approximately at the bottom of the ladder 23 lies and the isolation 27 approximately at the top of the ladder 23 starts. Ignoring the deformation of the cable, the distance between the cutting edge is cheating 30 from the upper pressure plate 6 that is about half the cable diameter plus half the conductor diameter, and the insulation 27 Begin approximately half the cable diameter minus half the diameter of the conductor. Under the in 7 The consideration of the cable deformation shown is the height of the tap contact 10 but larger, and that is - with an assumed displacement of the conductor 23 around d / 2 - the cutting edge 30 now at half the cable diameter plus the conductor diameter, while the beginning of the insulation 27 at half the cable diameter is.

10 to 15 : Different versions of the cutting edge

While in the embodiments of 6 to 9 the cutting edge runs parallel to the cable longitudinal direction, illustrate the 10 to 15 alternative embodiments (the insulation also present in these examples 27 with possibly existing cutting edges is in the 9 - 12 and 14 not drawn). In the example of 10 the cutting edge runs 30 relative to the cable longitudinal direction 32 inclined by an angle α. In the illustrated examples, the angle α is about 15 °.

In another embodiment according to 11 is the cutting edge 30 from two cutting sections 33 one of which is one by the angle α, and the other by the angle -α relative to the cable longitudinal direction 32 is inclined. The cutting sections 33 are V-shaped composite; the contact piece 29 So it has a convex shape.

In another embodiment of the tap contact 10 according to 12 are the two cutting sections 33 arranged in the manner of an inverted "V". The tap contact 10 thus has a concave shape.

In a further embodiment according to 13 is the cutting edge 30 curved executed. The cutting edge 30 and the cutting edges 31 for example, have a semicircular shape. The radius of curvature r of the cutting edge 30 in the example shown is equal to the extension e of the tap contact 10 longitudinal. 13 also shows by way of example that the contact piece 29 of the metal molding 26 does not need to extend over the entire length with which the tap contact 10 in the ladder 23 penetrates. Rather, extends in the embodiment of 13 (and the same may apply to differently shaped tapping contacts) the contact piece only over a part of this length, and thus also forms only part of the cutting edge 30 , Of the remaining part of the cutting edge 30 as well as the subsequent cutting edges 31 be through the isolation 27 educated. This one can, like 13 shows, in one piece with the pressure plate 6 (or a below explained in more detail carriage in the pressure plate) may be formed.

The examples discussed so far involved various parallel or inclined arrangements of the cutting edge 30 relative to the cable longitudinal direction 32 , wherein the parallelism or inclination always on the position of the tap contact 10 in which this in the contacted final state, ie with closed connection device 1 , is arranged. In embodiments in which the upper part 3 in the course of the pushing-in movement about an axis of rotation (eg the axis of rotation 18 ) is pivoted, the angular position of the tap contact changes 10 in the course of this pivoting movement. In alternative embodiments, the parallelism or inclination of the cutting edge can now 30 to a further open position of the connection device 1 Respectively. For example, illustrated 14 the case of a bleed contact 10 in which the cutting edge 30 in that position parallel to the cable longitudinal direction 32 runs in which they are at the shield 22 or - at a slightly further open position - on the cable sheath 25 is applied. As in 14 dashed lines, this means that the cutting edge in the contacted state of the connecting device consequently a slope relative to the cable longitudinal axis 32 has, which corresponds to the pivot angle β. The above statements on different inclinations and shapes of the cutting edge in connection with the 10 to 13 Therefore, alternatively refer to cases accordingly 14 , wherein in each case the pivoting angle β is to be added to the said inclination angle α or -α.

15 - 18 Embodiment with contacts arranged in a carriage

15 and 16 show a second embodiment of a connection device 1 in which the tap contacts 10 not fixed in the pressure plate 6 are arranged, but in one in the pressure plate 6 longitudinally movable carriage 35 , The 15 and 16 show the connection device 1 in open or closed state, according to the 2 and 4 ,

The in the 15 and 16 illustrated tap contact 10 is exemplary of in 13 Tapping contact shown in detail with a curved cutting edge 30 , Likewise, in this second embodiment with longitudinally displaceable tapping contact, other forms of contact, for example as described above in connection with the first embodiment (with fixed contacts), may also be used. The remaining description of details of the embodiments with fixed contacts applies equally to the embodiment of 15 to 18 insofar as they are technically compatible with the now described in more detail contact arrangement in a carriage.

The sled 35 is in one in the pressure plate 6 provided sliding guide in the longitudinal direction of the pressure plate 6 slidably mounted. The sled 35 is for example made of plastic, namely z. B. integral with the insulation 27 of the bleed contact 10 ( 13 ). Into that the sledge 35 including isolation 27 forming plastic part is the contact piece 29 used in metal; it occurs at the free end of the cutting edge 30 to the surface of the tap contact 10 ( 13 ).

When closed ( 16 ) falls the longitudinal direction of the pressure plate 6 (ie the direction in which the tap contact 10 is displaceable) with the longitudinal direction of the flat cable 4 together. In the open state of the connection device 1 ( 15 ), the two directions do not coincide exactly, but differ by the pivot angle β of the connection device; in the projection of the pressure plate 6 on the flat cable 4 However, they also collapse when opened.

The sled 35 is limited in its longitudinal movement by stops, by a proximal stop 36 and a distal stop 37 , The maximum possible movement stroke between these two attacks is in 15 represented and designated x ₁ .

As below using the 17 and 18 will be explained in more detail, is the carriage 35 Federbeaufschlagt so that it is in the open state of the connection device 1 in the in 15 illustrated starting position 38 located. And he is in this initial position 38 at the proximal stop 36 at.

In the course of the closing movement of the approach contract penetrates 10 with its free end in the flat cable 4 a, and is in the course of the closing movement something in the distal direction relative to the pressure plate 6 moved, because otherwise he would be the cable 4 slit in the longitudinal direction. For this purpose, it is the tap contact 10 acting in the proximal direction spring force is smaller than the force acting on the contact slot force in the distal direction. After complete closure reaches the tap contact 10 in the 16 illustrated end position 39 , This end position 39 is not quite at the distal stop 37 ; rather, here is still a safety distance x _{2 provided} to this stop to provide a certain tolerance for the displacement path and thus a cable slot in the longitudinal direction to avoid in any case. The displacement path Δx is thus x ₁ - x ₂ .

The 17 and 18 illustrate with a plan view of the pressure plate 6 an exemplary realization of the spring loading of the carriage 35 , To the movement of the carriage 35 relative to the pressure plate 6 The latter is with a clipping 40 equipped, in which the sled 35 is used. The longitudinal edges of the cutout 40 be from the sled 35 embraced and thus simultaneously form a longitudinal guide for this. At its distal end is at the sled 35 in one piece a springy tab 41 formed. This consists z. B., like the sled 35 , made of insulating plastic material. The springy flap 41 has in the unloaded state z. For example, the shape of a "V" can be elastically deformed into the shape of a "U", as in FIGS 17 and 18 is shown. It supports with its free end to an abutment 42 at the distal edge of the clipping 40 is arranged. As long as no external forces on the slide 35 act, ie in the 17 illustrated open state of the connection device 1 , presses the springy tab 41 the sled 35 thus in the proximal direction to the proximal stop 36 so the sled 35 thus the in the 15 and 17 illustrated starting position 38 occupies. Acts however when closing the connection device 1 the contact's intervention 10 in the cable 4 resulting external force in the distal direction, so moves the carriage 35 under elastic deformation of the tab 41 in the distal direction, to the in the 16 and 18 shown end position 39 ,

In the in the 15 to 18 shown embodiments are multiple bleed contacts 10 together on a sledge 35 arranged. In contrast, in other embodiments, a plurality of independently displaceable carriages are provided (eg, in each case one carriage for each tap contact 10 ), in order to take account of differently sized displacement paths Δx, which will occur with relatively widely spaced tapping contacts (in the exemplary embodiments of FIGS 15 to 18 with shared slides, the difference in displacement was still considered negligible).

The described embodiments thus show connection devices, with which the stripping-free tapping of shielded data cables can be done in a simple and (short-circuit) safe manner.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 2206187 [0002, 0004]
• - EP 0665608 B1 [0003, 0005, 0005]
• - DE 20111496 U1 [0005, 0005, 0032, 0032, 0032, 0034, 0038, 0038]
• - EP 1276173 A2 [0005]
• WO 2004/042872 A1 [0006, 0032, 0040]
• - EP 0726623 A1 [0007, 0032]
• WO 2005/057729 A1 [0008, 0032, 0034, 0044, 0060]
• - DE 20111491 U1 [0032]

Claims (28)

Device for the stripping-free production of a connection to a flat cable ( 4 ), the at least one shielded data line ( 8th ) with one or more wires ( 9 ), the device ( 1 ) for the stripping-free penetration of shielding ( 22 ) and insulation ( 24 . 25 ) and for contacting a wire ( 9 ) at least one tap contact ( 10 ), the toggle contact ( 10 ) is electrically conductive at its free end and at its flank area with an insulation ( 27 ) in order to ensure a short circuit between the wire to be contacted ( 9 ) and the shield ( 22 ) and the tap contact ( 10 ) on a pressure plate ( 6 ) is arranged that the production of the terminal by applying force to the pressure plate ( 6 ) to the flat cable ( 4 ) and an associated intrusion of the tap contact ( 10 ) into the flat cable ( 4 ), characterized in that the tap contact ( 10 ) a cutting edge ( 30 ), which in the longitudinal direction of the flat cable ( 4 ) or slightly inclined to this runs, and the toggle contact ( 10 ) - in cross-section perpendicular to the cutting edge ( 30 ) - widened. Device according to claim 1, wherein the cutting edge ( 30 ) lies in an imaginary plane through the vein to be contacted ( 9 ) and the penetration direction is clamped. Apparatus according to claim 1 or 2, wherein the inclination angle of the cutting edge ( 30 ) relative to the cable longitudinal direction is less than or equal to 30 °, preferably less than or equal to 20 °, and particularly preferably less than or equal to 10 °. Device according to one of claims 1 to 3, wherein the inclined cutting edge ( 30 ) of several differently inclined cutting sections ( 33 ) is composed. Device according to one of claims 1 to 4, wherein the cutting edge ( 30 ) has a curved shape. Apparatus according to claim 5, wherein the cutting edge ( 30 ) has the shape of a circle portion or ellipse portion or a portion of another basket arch shape. Device according to one of claims 1 to 6, wherein for the broadening in cross-section perpendicular to the cutting edge ( 30 ) of the insulated flank area is widening. Apparatus according to claim 7, wherein between the electrically conductive free end ( 29 ) and isolation ( 27 ) of the bleed contact ( 10 ) there is a stepless transition. Apparatus according to claim 8, wherein the tap contact ( 10 ) at least one more inclined insulating cutting edge ( 31 ) having. Apparatus according to claim 9, wherein the insulating cutting edge ( 31 ) the cutting edge ( 30 ) continues. Apparatus according to claim 9 or 10, wherein the change in inclination between the not or only slightly inclined cutting edge ( 30 ) and the more inclined insulating cutting edge ( 31 ) takes place abruptly. Apparatus according to claim 9 or 10, wherein the change in inclination between the not or only slightly inclined cutting edge ( 30 ) and the more inclined insulating cutting edge ( 31 ) continuously. Device according to one of claims 1 to 12, in which the entire part of the cutting edge ( 30 ), who is in the ladder ( 23 ) of the wire to be contacted ( 9 ) penetrates, is electrically conductive. Device according to one of claims 1 to 12, in which only a part of the in the ladder ( 23 ) of the wire to be contacted ( 9 ) penetrating part of the cutting edge ( 30 ) is electrically conductive, the other part thereof, however, is formed insulating. Device according to one of claims 1 to 14, wherein the isolated flank region of the tapping contact ( 10 ) in an imaginary plane through the cutting edge ( 30 ) and the penetration direction is clamped, has a widening in the direction of penetration of the form. Device according to one of claims 1 to 15, in which the pressure plate ( 6 ) on one side in a joint ( 18 ) is mounted, so that the impressions of the at least one bleed contact ( 10 ) by a pivoting movement of the pressure plate ( 6 ) to the flat cable ( 4 ) takes place. Apparatus according to claim 16, wherein at a proximal to the joint ( 18 ) lying insulating cutting edge ( 31a ) due to the pivoting movement relative to the cable ( 4 ) an additional component of movement in the direction of the joint ( 18 ) occurs, and to compensate for this additional movement component, the proximal cutting edge ( 31a ) a lesser inclination relative to the indentation direction than an isolated distal cutting edge (FIG. 31b ) Has. Apparatus according to claim 16, wherein said Pivoting movement of the tapping contact ( 10 ) with immobile mounting on the pressure plate ( 6 ) to a movement component of the tapping contact ( 10 ) in the cable longitudinal direction, and in which the tap contact ( 10 ) to avoid such a movement component when penetrating into the flat cable ( 4 ) displaceable on the pressure plate ( 6 ) is arranged. Apparatus according to claim 18, which is designed so that the tap contact ( 10 ) when penetrating into the flat cable ( 4 ) relative to the pressure plate ( 6 ) from the joint ( 18 ) is moved away. Apparatus according to claim 18 or 19, wherein the tap contact ( 10 ) in the longitudinal direction of the pressure plate ( 6 ) is displaceable. Device according to one of claims 18 to 20, in which the displaceable tapping contact ( 10 ) is subjected to force in such a way that it prevents itself from penetrating the flat cable ( 4 ) is located by the application of force in the end position of its displacement area, which then during the penetration of a displacement of the tap contact to avoid movement relative to the flat cable ( 4 ) allowed in the cable longitudinal direction. Apparatus according to claim 21, wherein the application of force done by a spring. Device according to one of claims 18 to 22, in which the tap contact ( 10 ) Part of a in the pressure plate ( 6 ) sliding carriage ( 35 ). Device according to one of claims 1 to 23, in which the tap contact ( 10 ) of a metal molding ( 26 ), which is surrounded at least in the flank region of insulating material. Device according to one of claims 1 to 24, wherein the insulating part of the tapping contact ( 10 ) with the pressure plate ( 6 ) or the carriage ( 35 ) is made in one piece. Device according to Claim 26, in which the insulating part of the tapping contact ( 10 ) and the pressure plate ( 6 ) or the carriage ( 35 ) are formed together in a casting process. Device for the stripping-free production of a connection to a flat cable ( 4 ), the at least one shielded data line ( 8th ) with one or more wires ( 9 ), the device ( 1 ) for the stripping-free penetration of shielding ( 22 ) and insulation ( 24 . 25 ) and for contacting a wire ( 9 ) at least one tap contact ( 10 ), the toggle contact ( 10 ) is electrically conductive at its free end and at its flank area with an insulation ( 27 ) in order to ensure a short circuit between the wire to be contacted ( 9 ) and the shield ( 22 ) and the tap contact ( 10 ) on a pressure plate ( 6 ) is arranged that the production of the terminal by applying force to the pressure plate ( 6 ) to the flat cable ( 4 ) and an associated intrusion of the tap contact ( 10 ) into the flat cable ( 4 ), characterized in that the pressure plate ( 6 ) on one side in a joint ( 18 ) is mounted, so that the impressions of the at least one bleed contact ( 10 ) by a pivoting movement of the pressure plate ( 6 ) to the flat cable ( 4 ), and that the tap contact ( 10 ) displaceable on the pressure plate ( 6 ) is arranged to a relative movement between tapping contact ( 10 ) and flat cables ( 4 ) in the cable longitudinal direction when penetrating into the flat cable ( 4 ) to avoid. Apparatus according to claim 27, comprising features according to any one of claims 1 to 15, 17, 19 to 26.