NO843797L - ELECTRIC FLAT CABLE PLUG. - Google Patents

Abstract

1. Plug for flat electrical cables with several insulated conductors (32) arranged side by side in one plane in a common cable sheath (31), mainly for use in telecommunication engineering, with one housing (10, 20) possessing a duct (11) to accomodate the cable end (30) said duct (11) originating in a wide initial section (12) intended to locate the cable sheath (31), and tapering towards an end section (13), the inside width of this end section (13) being equal to the cross section of the insulated wires (32) with their conductors (34) - althrough stripped of the cable sheat - still carrying their full insulation (33), and said housing (10, 20) being equipped with penetration-type contacts (41) in the end section of the duct, which contacts are aligned with the still insulated wires (32), so that, when used, they will pierce the insulation (33) of the corresponding wire and penetrate to its conductor (34) with their cutting end (44), said cutting end being located inside the housing, and their other contact ends (42), located outside the housing (10, 20), are mounted in fixed contact points (48) in a standard uniform arrangement relative to each other, which is common to all plugs, and characterized in that the housing consists of a cover (10) accomodating the lead-in duct (11) on one hand, and of an insert (20) which carries the penetration-type contacts (41) and can be plugged into the cover (20) on the other ; that the end of the cover-side lead-in duct is divided into separate (15) holes (14) which accomodate the still insulated wires (32) of the cable individually ; that the cover (10), in alignment with the layout of the insulated conductor (34) in each hole (14), possesses several potential penetration points (49) for the cutting ends (44) of the penetration-type contacts, said penetration points pointing in the direction in which the insert is pushed in ; that the penetration-type contacts (41) consist of blades (41) bent to point in opposite directions in the form of a "Z", so that the legs of this "Z" form the cutting ends (44) on one side and the contact ends (42) on the other, and the blades can in each case be selected (according to the individual lateral offset (59) of the fixed contact positions (38) in the insert (20) with respect to the desired penetration positions (49) in the cover) from a number of blades (41) in which the "Z" angle offset is more or less pronounced ; and that the blades (41) selected can be interchangeably placed into the insert (20) with that leg of the "Z" which forms the contact end while the Z-legs which constitute the cutting end (44) will form a pattern in the insert (20) which corresponds to the type of blades selected - and form one constructional contact assembly unit with the insert (20) with which they can be forced into the selected penetration points (49) in the cover (10).

Description

The present invention relates to a plug of the kind stated in the introduction to claim 1, and which allows the provision of contact with the non-insulated conductor of the electrical flat cable by means of a so-called penetration technique. It will then only be necessary to remove the cable jacket that envelops the conductors, while the insulation of the individual conductors in the cable must not be removed, which is otherwise necessary in the telephone technique for screw, solder, welding or clamp connection when contacting, for example . to connect a telephone set plug to a flat cable.

In the case of the plug that uses the known penetration technique, a housing is arranged in one piece with the channel for receiving the cable end, which has, at the end area of the channel opening above, a series of parallel to the channel for running outer tracks, in which tracks stick into plate-shaped penetration contacts, which lie transversely next to each other in relation to the longitudinal direction of the channel. In the area of these penetration contacts is the receiving channel for the cable end, as the channel decreases in cross-section where the cable with the conductors without a jacket with insulation lies, as longitudinal ribs in the channel retain the individual conductors in the longitudinal direction in the outer housing track with the help of the penetration contacts arranged therefor. Openings are provided in the bottom of the track through which the plate-shaped penetration contacts at their inner cutting walls can be driven into the decreasing end part of the channel by means of a hammer blow or the like, and then penetrate the insulation of the associated conductors and strike the conductor wires located in the isolation. In this way, a contact is provided at the other end of the plate-shaped penetration contact lying outside the housing, forming the easiest contact for the plug of the associated socket or the like. With this known plug, adjacent contact points are thereby provided, which are fixedly assigned to correspondingly adjacent conductors of the cable end.

Such a plug is characterized by a simple installation, while the jacket-removed cable end is only pushed into the receiving channel of the housing and only pressure must be exerted on the penetration contacts, but a disadvantage is that it is not possible to use contacting of the conductors which are suitable for other applications. With this, a wire cannot be connected in a different order at the known plate-shaped penetration contact than the position that is possible for the conductors lying next to each other, nor can the individual conductors in the wire be connected to several different penetration contacts.

With the known plugs, the cable end is secured by inserting a springy tongue.

The invention has the task of providing a plug of the kind mentioned at the outset, by means of which a simple handling of the penetration contacts of a cable can be provided by an optional arrangement of the connections of the conductors in a cable to the penetration contacts which sit in a fixed assignment in relation to to each other in the house. According to the present invention, this is provided by a plug of the type mentioned in the introduction, certain features appear in claim 1.

By dividing the housing into two parts in the casing and in the insert that can be inserted therein, these components can fulfill the optimal task for that purpose. The sheath serves for the placement of the cable end and for the sequential placement of the non-insulated conductors in the separated bores. The insert enables the provision of a contact set by appropriate selection of Z-shaped knives from a number of different strongly Z-bent knives, which stand in a specific arrangement pattern protruding as Z-legs and are arranged for cutting, which uses completely determined of the penetration points which is present for the drilling of the casing, when the insert is mounted in the casing. The insert is only a knife holder when it is made with Z-shaped knives. During assembly in the sheath, the insert is equipped with knives, a cutting tool that drives the entire contact set as a unit at the desired penetration point of the sheath through to the conductors. After assembly, the insert finally takes over the function of the escape connection.

In order to hit the facultative penetration points in the sheath with the cutting Z-shaped knife in a reliable way during the assembly process of the insert, it is recommended to form each penetration point by means of a guide chamber, which extends in the insertion direction of the insert and thereby guides the cutting ends by assembly sequence exactly to its desired location. The contact points of the Z-leg in the plug, which for connection purposes lie freely outside, always assume the same uniform order regardless of which knife for the rows of different strong Z-shaped bent knives have been selected. For this purpose, the contact points are preferably arranged in one or more rows in the insert, which lie parallel to the bore in the casing. Two rows are usually used and form the insert by means of a locking device or the like, a mounting part that can be connected to the jacket and a core part outside the jacket, with separate Z-legs arranged for contact purposes at the side surfaces of the core part that lie above each other and where appropriate C is introduced -shaped profiled rails. Proceeding from a Z-shaped knife introduced at a certain point of contact with its one leg is available through the contact point in the sheath for the cutting end of the respective other leg, which is arranged in a vertical relation to the direction of progress of the drilling horizontal plane. Depending on how far the desired point of penetration is to be removed from the pre-specified point of contact for the mounting condition, the Z-shaped bending of the knife is selected.

In order to break the various Z-shaped distortions of the respective selected knives, the uniform insert preferably on the side facing the sheath has a sufficiently large recess in which contact points are arranged in the form of impact surfaces or lateral meshed shoulders, which support individual selected and inserted knives. Thereby, a reliable position of the knives is ensured during the penetration work when installing the insert in the casing. Preferably, the insertion direction of the knife into the sheath is carried out in the same direction in which the insert is later introduced into the sheath for assembly purposes.

It is of particular importance that the non-insulated conductor in the sheath is also caught mechanically by the intermediate piece, which lies between the selected penetration points for the cutting end of the knife and the retention point of the cable in the sheath. Thereby, the stretching, pressing and twisting movements that occur in the cable when using the plug cannot propagate to the area of the contact ring between the cutting end and the conductors and thereby affect the electrical connection. Such interception parts of the conductors can be provided by means of a deformation of the wall of the borehole whereby it is advantageous to cut out a stop from the wall of the borehole and press this in areas into the borehole so that it is clamped there. This can take place in a blind hole within the casing. This precaution is independent of the aforementioned task of solving the Z-shaped crippled knife of general importance, which is why this measure can also be used in other cases.

The invention must be described in more detail with reference to the drawing, where:

Fig. 1 shows the side view of the plug suitable for connecting a telephone cable and in natural size. Fig. 2 shows an enlarged representation of a component of the plug, namely a sheath before the introduction of the cable end and seen in the longitudinal direction. Fig. 3 shows the corresponding fig. 2 an enlargement of a part of the plug, namely an insert provided with selected penetration contacts. Fig. 4 shows a side view through the upper area of the sheath which serves to receive the cable end and along the section line IV-IV in fig. 2, where also the section guide II-II before the longitudinal section in fig. 2 is indicated. Fig. 5 shows a larger enlargement of a horizontal section through the insert along the line V-V in fig. 3. Fig. 6 shows an enlargement of the penetration contact, used for the plug according to the invention, before the installation. Fig. 7 shows a side view of the one in fig. 6 showed

penetration contact.

Fig. 8 shows a longitudinal section through the plug correspondingly shown in fig. 2 and 3, where the cable end is led into the sheath and the fixed on its conductors are brought into contact via the introduced insert over the penetration contacts. Fig. 9 shows an enlargement of a cross-section through the assembled plug along the section line IX-IX in Fig. 8.

The plug consists of a housing consisting of a jacket 10 and an insert 20 which can be inserted therein, the structure of which should be shown in more detail in fig. 2 and 3.

The cap 10 comprises a channel 11 for receiving a flat cable end 30, see fig. 8, which in a common cable sheath 13 carries several conductors 32 lying next to each other in a plane. The conductors 32 again consist of an insulation 33, in which the actual conductor wires 34 are arranged, in the case of a telephone cable it is a strip consisting of several wires . The cable end 30 has had the sheath removed so that, as can be seen from fig. 8, the conductor 32 is detached, but has not had its insulation 33 removed. A bend protection sheath 35 is firmly applied to the cable 30, which has a radial projection 36 for retaining the cable end in the sheath 10.

For receiving the projection 36 for the bending protection cover 35, the channel 11 has a recess 12, which can be seen from fig. 2 from which it tapers off over a funnel-shaped transition piece in the longitudinal direction for continuous drilling 14, which in terms of number and width corresponds to the profile of the uninsulated single conductor 32. The placement of the cable 30 in the sheath 10 then takes place in the following way: After the cable 30 which previously mentioned is provided with the bending protection cover 35 and the sheath has been removed, the cable 30 is pushed into the channel 11 of the jacket 10. Thereby, the conductor 32 is automatically guided by means of the funnel-shaped transition piece 13 into the assigned bore 14, which is separated of a material 15, reproduce fig. 9. With the funnel-shaped transition piece 13, the anodized rib 16 can guide surfaces by this guide. The bore 14 is provided with closed walls around the circumference, and so in relation to the underside of the casing that points towards the guide chamber 17, which is covered by a cover skin 18. In this way, it is possible to pass the conductor smoothly through without it getting stuck in the guide chamber's 17 arranged in the bore 14. The conductor ends 37 go, repeat fig. 8, out of the jacket at one end of the recess 19 for control purposes whose end surface also serves as a stop for the conductor end 37. From the jacket there is access to a blind hole 38, which is arranged in the course of the bore 14 and with the help of of the deformation 13, reproduce fig. 8, to the intervening original wall 40, reproduce fig. 2, a catch is provided for the individual conductors beyond the protrusion 36 located in the aforementioned projection 12 to the bending protection casing 35 in the channel 11. From this deformation point 39, the conductor 32 is held in the bore 14 and rotation, tensile stress and compressive stress no longer affect in a disturbing movement of the conductor 32 in the drill hole 14.

This deformation 39 can be provided in other ways than shown, as a profiled stopper can be cut into the wall 40 which is pressed in and thereby the conductor 32 is caught up in the bore 14. The stopper is clamped and also the conductor which it has gripped.

As fig. 3, 5 and 9 show, the insert 20, which is of one piece, consists of a previously prepared mounting part 21 which ensures the connection with the jacket 10 and an oven for this displaced core part 22, which determines the electrical contact points. On the side facing the jacket 10, the insert 20 has a recess 23 from which penetration contacts in the form of Z-shaped knives 41 can be inserted vertically with the leg 42. This Z-leg is guided through opening 24 at the bottom of the recess 23 and finally reaches into the core part 22 in the C-profiled back-cut longitudinal groove 25. In the fully inserted state of the knife 41, the individual knives come into abutment at the recess 23, namely at the impact surface 25, which captures the Z step. As an additional contact point, a side-directed shoulder surface 26 is also arranged in the recess 23, which at least in some cases follows the starting area of the second Z-leg 44 connecting to the Z-step 43.

The knife has the one in fig. 6 and 7 showed the principle structure. The knife 41 consists of a Z-shaped tin strip with a special contour. The end 63 of the Z leg 42 which is to be inserted into the insert 20 is with respect to the sheet thickness, as fig. 6 shows, sharpened and rounded in the tin circumference, which is also evident from fig. 7. This facilitates the threading of the Z-knife. In the inserted state, when the Z leg is placed in the groove 27 of the core part 22, the leg forms fixed contact points for the plug when the plug interacts with the corresponding complementary plug contact. This Z leg 42 can therefore be perceived as the "contact end" of this knife-like penetration contact 41. The contact end 42 is all the knives 41 designed uniformly.

All the knives 41 also have a similar uniform design with regard to the second set 41 and 44. There is arranged, firstly, a shoulder 45 projecting on the side, which rests in a correspondingly designed, not shown further point of impact in the interior of the recess 23 and which takes up the pressure stress of the insertion mounting of the insert 20 in the jacket 10, which will be described in more detail later. The Z-leg 44 finally ends in the double tip 46, which serves as a cutting edge, which is joined on both sides of the legs by the sawtooth profile 47, which serves for the anchoring which will be described in more detail later. The knife 41 that can be used according to the invention differs from one another with regard to the thickness of the Z-shaped distortions, i.e. the displacements of both legs 42, 44 in relation to each other, which is also evident from the length of the intermediate Z-step 43. This also appears from the purpose of the present invention when mounting the plugs, where the following applies: For mounting the plug, it is inserted with the knife 41 provided in the insert 20 as a component unit in the casing 10. The Z-legs projecting out of the insert 22 form with each other a device pattern, which is dependent on the choice of the respective knives 41 used with regard to the dimensioning of the neck 43. The cutting edge 46 of this Z leg 54 thereby first reaches into the associated guide chamber 17, when the insert in accordance with fig. 3 as shown by the arrow 50 is moved into the casing 10. The guide chamber 17 thereby causes an exact centering and thereby guides the cutting edge 46 to the locking skin 18 at the bottom of the chamber 17, which is pierced. With a further insertion movement 50, the cutting edge 56 penetrates into the assigned bore 14 and penetrates into the insulation and the conductor 32 which is arranged in advance in the sheath 10, whereby a perfect connection is created with the conductor 34. Which guide chamber 17 of the different bores 14, which thereby become guiding, is dependent on the dimension of the pre-crookedness 43 of the knife 41 used thereby. This is in accordance with the following points of view: As already mentioned above, the contacting ends of the functioning Z legs 42 occupy fixed contact positions 48 at the core part 22 to the plug. In the case of accompanying longitudinal ribs 51 between the contact point 48 for the pluggable core part 22 a defined outline profile which enables it to be connected to specific plug contacts which have a corresponding complementary opening profile. These contact points 48 are, as can be seen from fig. 5 in two rows 60 next to each other, namely on both longitudinal sides of said core part 22 in the insert 20. These two arrangement planes of the contact points 48 lie parallel in relation to the direction of progress of the bore 14 when considering the mounting state of the plug according to fig. 8. The invention now makes it possible by choosing a knife 41 with suitable curvature 43 that the cutting edge of the associated second Z leg 44 makes contact with the conductor of a specific desired conductor 32 in the cable. It is only necessary to ensure that starting from the contact point 48 in the insert 20 and acting as a cutting Z-leg 44 is displaced so much that in the previously mentioned insertion movement 50 in fig. 3 attaches correspondingly laterally displaced guide chambers 17 which lead it to the associated conductor 32 in the bore 14. In the mounting state of the plug, therefore, at a given contact point 48 in the core part 22, a number of guide chambers corresponding to the number of bores 14 are available for the cutting-acting Z- leg 44. The guide chamber 17 arranged in the plane of the considered contact points 48 thus form selectable penetration points for the knife 41. The guide chamber 17 is thus located in a plane which is oriented vertically in the direction of the bore 14. The opening of the guide chamber 17 must then be regarded as an optional penetration point 49 for the cutting Z leg 42.

With the help of the present invention, it is thus possible to develop a plug by proceeding from a uniform sheath 10, as the plug's contacts can be electrically connected in different ways to the wires in the individual conductors 32. In the invention, a series of different blades 41 available, as the crisscrossing is different, so they have different long Z-steps 43. Depending on which of the conductors a previously given contact point 48 is to be connected, the corresponding knife 41 is selected and at the points 23, 24, 27 the insert is 20 placed, where it is firmly anchored for plug mounting, but can be exchanged for another knife when the plug is disassembled. As can be seen, when selecting the knife, the desired contact is provided with various conductors 32 in the sheath 10. The cutting-active Z-legs 44 number in relation to each other in a specific pattern whereby specific penetration parts 49 in the sheath 10 are used. As can be seen from fig. 9, the height length of the Z-step 43 can vary depending on the size of the crotch.

At the insertion 50 of the insert 20 in the cover 10, this mounting part 21 reaches between deeper drawn side surfaces 52 of the cover 10, whereby a connection is provided between both components. In this case, a locking hold is used, the locking protrusions 53, 54 at the mounting part 21 of the insert and the corresponding locking openings 55, 56 in the side wall 52, which during vertical insertion movement can automatically engage with each other and secure the end position. As can be seen from fig. 9 reaches the upper edge of the shoulder 45 from the bottom surface of the mantle. In the mounting state, the mounting part 21 grips the insert 20, see fig. 3 and 8, with a shoulder 28 in the area behind the projection 12 of the introduced bend protection casing 35, whereby the insert also affects the placement of the cable end.

The cap 10 has a deeper lying field 57, where a type plate indicating the manufacturer and the type of plug can be placed protected.

In order to provide a resilient securing of the plug in the case of use, a locking hook 29 is formed in one piece in the insert 20, the free end of which is covered by a front wall 58 of the jacket. When fitted, the plug grips, repeat fig. 8, into the sawtooth profile 47 to cutting Z leg 44 in the knife in the wall area of the jacket in the field of the selected bore 14.

As already mentioned, it is easily possible to provide another contact with the conductor 32 in the cable by means of a corresponding choice of different bent blades 41. In order to be able to see this from the outside, the sheath 10 can be as it is, but instead an insert is chosen whose core part 22 has a different profile, e.g. has a different position or size on the ribs 51. Thus, an unwanted confusion of plugs with different contact rings can be prevented and at the same time a uniform construction of the plug from few components is provided.

In fig. 5 shows, by means of dotted lines 60, the parallel device plane for the contact point 48 in the insert, which is stretched in accordance with the longitudinal course of the bore 14 in the jacket 10. Dotted in fig. 8 indicated a device plane 61 running vertically in relation to the bore 14, in which the facultative penetration part 49 and the guide chambers 17 for the selective introduction of a knife 41 at a specific contact point 48 for the cutting Z legs 44 appear. It should be noted that the plug device 53 of the knife 41 in the insert 20 takes place in the same direction as the aforementioned insertion movement 50 of the insert 20 in the sheath 10, refer to fig. 3. Thereby also a dissolution of the inserted knife 41 during the assembly process of the plug is excluded. In fig. 9, displacement of the contact point 48 in the insert 20 of the selected penetration point 49 in the sheath 10 is denoted by 59 and corresponds to the length of the Z step 43 in the associated knife 41.

Claims (20)

1. Plug for electric flat cable with several conductors (32) lying next to each other in a plane in a common cable sheath (31), especially for telephone technology, consisting of a housing (10,20) with a cable (11) for receiving the cable end (30) of the channel - starting from a wide initial part (12) for placing the cable jacket - as the channel narrows at its end part (13), The clear width of the channel corresponds to the cross-section of the conductor (32) with the wires (34), since it has no sheath, but is still completely insulated (33), and in the housing (10,20) penetration contacts (41) aligned in relation to the uninsulated conductors (32) are arranged in the channel part, the penetration contacts collide with their respective cutting end (47) in the interior of the housing against the associated conductor insulation (33) to the conductor strip (34) and with its other outside the housing (10,20) find the contacting end (42), the anode is the fixed contact point (48), which with all the plugs always has the uniform and the same arrangement in relation to each other, characterized by the fact that the housing consists of of a sheath (10) on one side containing the recording channel (11) and on the other side of an insert (20) which can be inserted into the sheath (10) and holds the penetration contact (41), that the end part of the receiving channel (11) on the jacket side is divided in relation to each other into separate (15) bores (14), which can individually receive the non-insulated conductors (32) of the cable, that the sheath (10) in the extent of the conductors in each bore (14) has more respective insertion direction of the insert facultative penetration parts (49) for the cutting end (44) of the penetration contact (41), that the penetration contact consists of Z-shaped pre-crooked knives (41), whose Z legs form on one side the cutting ends (44) and on the other side the contact ends (42) and the respective - corresponding to the respective lateral displacement (59) between the fixed contact points (38) in the insert (20) and the desired penetration point (49) in the sheath (10) - can be selected from a number of different strongly Z-shaped curved (43) blades (41), and that the selected knives (41) in Z legs (42) which form the contact ends can be inserted interchangeably in the insert (20) and form in the insert (20) with their knife end forming Z legs (44) a device pattern corresponding to the knife selection so that the contact set as a unit with the insert (20) can be pressed together at selected penetration parts (49) in the jacket (10). 2. Plug according to claim 1, characterized in that the facultative penetration point (49) is determined by means of the guide chamber (17) for the cutting end (44) in the sheath (10) and which characterizes the insertion direction (50) of the insert (20). 3. Plug according to claim 1 or 2, characterized in that in the mounting state of the insert (20) in the sheath (10) the contact points for the knife (41) are arranged in one or more rows (60) in the insert, which lie parallel to the uninsulated the conductors (32) in the receiving bores (14) in the jacket (20). 4. Plug according to one of the preceding claims 1 to 3, characterized in that a specific set of contacts (48) in the insert (20) is assigned to a number of facultative penetration parts (49,17) lying in the same device plane (61) in the casing . 5. Plug according to claim 3 or 4, characterized in that the device path (61) of the optional reciprocating parts (49,17) in the casing (10) is perpendicular to the direction of travel of the uninsulated conductor (32) in the receiving borehole (14). 6. Plug according to one or more of the preceding claims, characterized in that for mounting the insert (20) with the knife (41) in the casing (10) the bore (14) has a closed wall in relation to the guide chamber (17) which opens into the bore ( 18), which can only be pushed through by the cutting end formed by the Z leg (44) of the knife (41) during assembly. 7. Plug according to one or more of the preceding claims 1 to 6, characterized in that the insert (20) has a recess (23) facing the sheath (10) in its assembled state, in which different Z-shaped distortions (43) of the knife (41 ) the corresponding choice is busy. 8. Plug according to one or more of the preceding claims 1 to 7, characterized in that the insert (20), in particular the recess (23) located in it has abutment points (25,26) at which the knives (41) with different Z-shaped crouchings (43) can be terminated. 9. Plug according to claim 8, characterized in that the installation site consists of Z-bends (43) in the insertion direction (62) of the knife (41) consists of sub-capturing impact surfaces (25). 10. Plug according to claim 8, characterized in that the contact surface consists of side-directed shoulder surfaces (26), which follow the starting area of the Z-leg (44) which joins the crotch (43). 11. Plug according to one or more of the preceding claims 1 to 10, characterized in that the Z-shaped knives (41) can be inserted into the insert (20) from the side facing the jacket (10) from the same direction (62), from which (50) the insert (20) can later be inserted into the casing (10) for assembly purposes. 12. Plug according to one or more of the preceding claims 1 to 11, characterized in that the insert (20) consists of a mounting part (21) gripping in the jacket (10) and of one in it on the outside of the contact points (48) for the Z-shaped the knife (41) determined core part (22). 13. Plug according to claim 12, characterized in that the mounting part can be connected by means of locking-holding devices (53,54,55,56) to the cover (10). 14. Plug according to claim 12 or 13, characterized in that the core part (22) in the insertion direction (62) of the knife has continuous grooves (27) with a back-cutting T-profile for receiving the Z-leg (42) which forms the contact end. 15. Plug according to one or more of the preceding claims 1 to 14, characterized in that the uninsulated conductor (32) in the jacket (10) is taken up individually in respective parts, which lie between the selected penetration point (49,17) for the knife (44) ) to the blade (41) and the retaining point (12,36) to the cable jacket (31). 16. Plug according to claim 15, characterized in that the collection point (39) of the individual conductors (32) is arranged at the transfer point to the recording channel (11) in the field which has the guide chamber's (17). 17. Plug according to claim 15 or 16, characterized in that the collection point (39) is arranged in a blind hole (38) in the casing (10) and which is open to the insert (20). 18. Plug according to one or more of claims 15 to 17, characterized in that the intercepting place is provided by means of a deformation (39) in the wall (44) for the bore (14). 19. Plug according to claim 18, characterized in that the deformation (39) consists of a stopper which can be cut out of the wall (40) of the borehole, and the area is pressed into the borehole (14) and clamped there. 20. Plug according to one or more of claims 1 to 19, characterized in that for placing the cable sheath (31) in the housing (10, 20) serves a bend protection sheath (35) which envelops the cable end (30) which has a radial projection (36) while the cover (10) and/or the insert (20) has a complementary recess (12) which occupies the projection.