FI76221B - STICKKONTAKT FOER ELEKTRISK BANDKABEL. - 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

76221

Plug for electrical ribbon cables. - Stick contact for electrical risk band cable.

The present invention relates to a plug of the type set out in the definition of claim 1, which allows the uninsulated conductors of an electric ribbon cable to be contacted by a so-called penetration technique. In addition, only the common cable sheath surrounding the conductors needs to be removed, while the insulation of the wires comprising the individual conductors no longer needs to be removed, which is otherwise necessary in telecommunication soldering, welding or flattening connections, e.g. for connecting a telephone plug to a ribbon cable.

In the prior art penetration (U.S. Pat. No. 4,158,539), the plug to be connected is provided with a one-piece housing with ducts for receiving the cable end when the end region opposite the duct opening has a plurality of outer grooves running parallel to the duct. in the region, the receiving channel for the end of the cable is tapered to a cross-section of the sheath-free but still overhead conductor conductors, with the longitudinal ribs in the channel extending the individual conductors a hammer or the like with an impact with an internal cutting head on the tapered end portion of the duct where the insulation of the conductors is penetrated and the conductor in the insulation is penetrated oon. Thus, a contact is provided, with the other end of the plate-shaped through contact outside the housing forming a plug for electrical contact with the socket or the like at the end of the determining contact. In this known plug, adjacent contact points are thus formed, which are arranged on adjacent conductors of the cable end conductors.

Such plugs are advantageous due to the simple installation, since only the unsheathed end of the cable is inserted into the receiving channel of the housing and pressure is required to apply to the through contacts. However, there is a drawback that thus other types of wire contact with individual conductors suitable for other applications are not possible. The wire of the conductors cannot be connected to the known plate-shaped through contacts in a different order than is possible due to the position of the adjacent conductors at the end of the cable, and the wire of one single conductor cannot be connected to several different through contacts.

In the known plug, the end of the cable is fixed inside the flexible tongue by an impact.

It is an object of the present invention to provide a plug of the type described in the specification which allows, in a simple-to-handle cable connection, the connection of the conductors to the transmission contacts in the housing in a fixed order relative to each other in the housing. This is achieved according to the invention by the features set out in the characterizing part of claim 1.

By dividing the housing into a cover and an insert to be inserted into it, the functions of both components can be optimally fulfilled. The shield works to secure the end of the cable and to regularly place insulated conductors in separated bores. The insert allows, by appropriate selection of Z-shaped knives from among the variously Z-bent knives, to provide a set of contacts with cutting head Z-arms projecting 3 76221 in a particular fitting design that utilizes fully defined available penetrations relative to the bore of the cover when the insert installed in the cover. The insert is primarily when equipped with selected z-shaped knives, the knife holder. Then, when installed in the cover, the insert with knives forces the cutting tool as a structural unit with the contact group at the desired passage points of the cover up to the conductor wires. After installation, the insert finally takes on the function of a plug.

In order to be sure of the optional penetration points of the cutting heads of the Z-shaped knives in the insert cover during installation, it is recommended to form a control chamber at each penetration point, which runs in the insertion direction of the insert and therefore guides the cutting heads exactly to their intended position. For connection purposes, the contact points of the outwardly free Z-branches of the plug always require a similar uniform fit, no matter which knife is selected from among the knives bent to a different Z-shape. In this case, the contact points are suitably fitted to the insert in one or more rows, parallel to the bores in the cover. Two rows are usually used and the insert consists of a mounting part connected to the cover by retaining supports or the like and a core part outside the cover, where the Z-branches free for contact purposes are located on opposite side surfaces of the core part and are appropriately inserted into C-shaped rails. From the Z-shaped knife inserted at a particular point of contact with its branch, for the second branch in each case acting as a cutting head, the passage points in the cover which are arranged perpendicular to the plane in the direction of the bores are available. Depending on how far the desired penetration point is from a given contact point in the installation space, a Z-shaped bend of the knives is selected.

4 76221

In order to accommodate the various Z-shaped bends of the currently selected knives in the unitary insert, there is expediently a sufficiently large cavity on the cover side with mounting points in the form of support surfaces or lateral straws supporting the individual selected and inserted knives. Thus, the reliable position of the knives during the penetration work is guaranteed when installing the insert in the cover. Suitably, the direction of insertion into the guard of the knives is the same as the direction in which the insert is later attached to the guard for installation purposes.

It is very important to mechanically also support the insulated conductors in the shield to the spacer between the penetration points selected for the cutting ends of the knives and the attachment point of the cable in the shield. As a result, the tensile, compressive and rotational movements of the cable which may occur when the plug is used cannot continue along the conductor wire of the cutting head up to the contact area and impair the electrical connection. Such bases of the conductors can be provided by deformation of the bore wall, in addition to which it is advantageous to cut a stopper from the bore wall and press it into the bore so that it is clamped therein. This can happen in a false hole inside the cover. These measures are of general importance, irrespective of the said function and solution of the Z-shaped knives, so that they can also be carried out in other cases.

An embodiment of the invention is shown in the drawings, in which

Fig. 1 shows a side view in approximately natural size of a telephone cable plug according to the invention for connection, 5 76221

Fig. 2 shows in multiples of magnification a longitudinal section of a component of the plug, namely the cover before the cable is inserted into the end,

Fig. 3 is an enlarged view corresponding to Fig. 2 of another part of the plug, namely an insert with selected through-contacts,

Fig. 4 shows a section along the line IV-IV in Fig. 2, from the outer area of the shield functioning for receiving the end of the cable, and in which the section II-II for the longitudinal section of Fig. 2 is also shown,

Fig. 5 shows an even larger magnification of a horizontal section of the insert along the line V-V in Fig. 3,

Fig. 6 shows a front elevational view of a through contact used in a plug according to the invention before its installation,

Fig. 7 is a side view of the penetration chain shown in Fig. 6,

Fig. 8 shows a longitudinal section corresponding to Figs. 2 and 3 of a plug in which the end of the cable is inserted into the cover and fastened and its conductors are in contact via the penetration contacts of the inserted insert, and

Fig. 9 shows a large magnification of the line IX-IX in Fig. 8

taken along the cross-section of the installed plug.

The plug consists of a housing-like cover 10 and an insert 20 inserted therein, the structure of which is clear from Figures 2 and 3.

The cover 10 comprises a duct 11 for receiving the ribbon cable end best seen in Fig. 8, in which the ribbon cable has a plurality of adjacent conductors 32 in the same plane inside the common cable sheath 31. These conductors 32 in each case consist of an insulator 33 with the actual conductor 34 in the telephone cable. a conductor consisting of several wires. The cable end 30 is sheathed so that, as shown in Figure 8, the conductors 32 are free, but have not yet been detached from their insulation 33. A bending sleeve 35 with a radial protrusion 36 is fixedly mounted on the cable end 30 to secure the cable end to the shield 10. .

For receiving the protrusion 36 of the anti-bend sleeve 35, as best seen in Figure 2, the channel 11 has a recess 12 from which it tapers through the funnel-shaped transition portion 13 into longitudinal bores 14 corresponding in number and extent to the profile of the individual conductors 32 insulated. In this case, the attachment of the cable end 30 to the shield 10 is completed as follows:

After, as already described, the cable end 30 is provided with an anti-bend sleeve 35 and the sheath removed, the cable end 30 is inserted into the channel 11 of the shield 10. The conductors 32 then move to the associated bores 14 under the funnel-shaped transition portion 13. , are separated by a cover material 15. The ribs 16 arranged in the funnel-shaped transition part 13 form guide surfaces in this guide. The bores 14 are provided with enclosed walls, which also applies to the control chambers 17 on the underside of the cover, which are covered with a closure cover 18. Thus, the conductors can be slid through without sticking to the area of the control chambers 17 aligned with the individual bores 14.

As shown in Figure 8, the conductor ends 37 enter, for inspection purposes, a cavity 19 in the end of the cover, the end surface of which can also act as a response to the conductor ends 37. Accessed from the underside of the cover is a false hole 38 which is in each case aligned with each bore 14 and provides deformation of the intermediate wall 40 (Fig. 2) 39 on the other side of the protrusion 36 in said recess 12 of the channel 11. This deformation point 39 retains the conductor 32 in the bore 14. Twists, tensile stresses and pressure stresses no longer cause detrimental movement of the conductor 32 in the bore 14.

These deformations 39 can also be effected in a manner other than that shown, e.g. by cutting from the wall 40 a profiled stop which is pushed in and thus retains the conductor 32 in the bore 14. The stop pinches the conductor 32 to which it engages.

Figures 3, 5, 9, such a one-piece insert 20 is comprised of the extended mounting portion 21, which ensures the connection with the envelope 10 and transferred thereto myocardial dänosasta 22 which define the electrical contact points. On the side 10 of the cover, the insert 20 has a cavity 23 from which the penetration contacts in the form of z-shaped knives 41 on its branch 42 can be inserted vertically. These Z-branches are passed through openings 24 in the bottom of the cavity 23 and end in C-profiled, back-cut longitudinal grooves 25 in the core part 22. In the complete connection of the knives 41, the z-steps determined by the curvature of the individual knives settle at the mounting points in the cavity 23. that support z-stairs. As additional mounting points, lateral shoulder surfaces 26 are also arranged in the cavity 23, which in at least a few cases follow the mounting areas of the second Z-branch 44 associated with the Z-stage 43.

The knives have the basic structure shown in Figures 6 and 7. The knife 41 is formed by a z-shaped strip of plate with a special contour. The end 63 of the Z-arm 42 to be inserted into the insert 20 is sharpened with respect to the thickness of the plate according to Fig. 6 and rounded to the outline, as can be seen from Fig. 7. This facilitates the threading of the Z-knife. In the insertion mode, when the Z-branches are placed in the grooves 27 of the core part 22, the branches form fixed contact points for the plug when this cooperates with the corresponding complementary socket. Therefore, these Z-branches 42 can be considered as "contact heads" of these knife-through penetration contacts 41. These contact heads 42 are formed similarly in all knives 41.

All knives 41 also have a corresponding uniform structure with respect to the t-branch Z-branch 44. It first has laterally projecting shoulders 45 which settle at correspondingly formed mounting locations, not shown in more detail, inside the cavity 23, and receive pressure stresses on the cover of the insert 20 in the plug-in installation described in more detail. The Z-branches 44 finally terminate into double tips 46 which act as cutting edges and which are joined on both sides of the branch by saw-tooth-shaped portions 47 which function for the anchoring described in more detail. The knives 41 used according to the invention differ from each other in the extent of the Z-shaped curvature, i.e. in the displacement of the two arms 42, 44 relative to each other, which is indicated by the length of the intermediate Z-stage 43. This can be seen from the goal setting according to the invention in the installation of the plug, to which the following applies: 9 76221

To install the plug, the insert 20 provided with knives 41 is placed as a structural unit inside the cover 10. The Z-branches projecting from the insert 20 form a grouping pattern with each other, which depends on the choice of the knives 41 used in each case with respect to the length of their curvature 43. These Z-legs 44 of the cutting edges 46 come first-ohjauskam to an aligned chamber 17, when the insert of Figure 3, the direction of the arrow 50 in the direction of the housing 10. The guide chambers 17 provide precise centering and guide the cutting edges 46 against the closure cover 18 at the bottom of the chamber 17, which is pierced. With the additional plug movement 50, the cutting edges 46 penetrate the bore 14 aligned therewith and from there penetrate the insulating material of the conductor 32 placed in place in the shield 10, after which they come into contact with the conductor 34 in a proper electrical connection.

Which control chamber 17 of the different bores 14 then becomes a steering effect depends on the length of the step 43 of the curvature 43 of the knife 41 used. This adapts to the following aspects:

As already mentioned above, the Z-arms 42 acting as contact heads take fixed contact points 48 against the core part 22 of the plug. Under the action of the longitudinal ribs 51 between the contact points 48, the insertable core part 22 obtains a concrete contour profile which makes it connectable to certain sockets with a corresponding complement opening profile. These contact points 48 are, as best seen in Figure 5, in two rows 60 side by side, namely on both longitudinal sides of said core portion 22 of the insert 20. These two fitting planes of the contact points 48 are parallel to the direction of travel of the bores 14 when considering the plug mounting state of FIG. The invention now makes it possible, by selecting a knife 41 with a suitable bend 43, for the cutting edge of the second z-branch 44 to be in contact with the conductor of a certain desired conductor 76221 ίο 32 of the cable. For this purpose, it is only necessary to ensure that, starting from the contact point 48 in the insert 20, this Z-branch 44 acting as a cutting head is displaced so far that, according to Fig. 3, it meets the laterally displaced guide chamber 17 leading to the Z-branch. against the conductor 32 in the bore 14. Thus, in the plug mounting state, a set of control chambers corresponding to the number of bores 14 for the Z-branch 44 acting as the cutting head is available for one given contact point 48 of the core part 22. The guide chambers 17 arranged in the plane of this considered contact point 48 thus provide selectable passage points for the knife 41. These guide chambers 17 are thus located in a plane 61 directed perpendicular to the direction of travel of the bores 14. Therefore, the openings in the guide chambers 17 must be considered as optional passage points 49 for the intersecting Z-branch 42.

Thus, starting with the unitary shield 10, the invention makes it possible to develop a plug whose contacts can be electrically connected in various ways to the wires of the individual conductors 32. The invention makes use of a number of different knives 41 which differ in curvature of the knife, i.e. they have Z-steps 43 of different lengths relative to each other. Depending on which conductor the predetermined contact point 48 is to be connected, a suitable knife 41 is selected and inserted 20. 24, 27, to which it is firmly attached for mounting the plug, but is interchangeable with another knife in the disassembled state of the plug. As can be seen, the selection of the knives achieves the desired connection of the various conductors 32 in the cover 10. The shear-efficient Z-branches 44 require a certain fitting pattern relative to each other, as a result of which certain penetration points 49 are utilized in the cover 10. As can be seen from the comparison in Fig. 9, the height position 11 76221 of the z-stage varies depending on the bend size.

The insertion of the insert in the direction of arrow 50 to the cover 10 of the insert 21 will be further mounting the cover 20 withdrawn from the side surfaces 52 in between, in which a connection between these two components. In addition, in the present case, retaining supports are used, which consist of retaining projections 53, 54 in the insert mounting part 21 and corresponding retaining holes 55, 56 in the side walls 52, which members engage with each other in a vertical plug movement and secure the end position. As can be seen in Figure 9, the upper edges of the straw 45 come in front of the bottom surface of the cover. In the installation space, the mounting part 21 of the insert 20 adheres to the area behind the cavity 12 of the anti-bend sleeve 35 inserted by the projection 28, as shown in Figs.

The cover 10 has a recessed area 57 in which the manufacturer's and plug's quality label can be securely placed.

In order to achieve flexible securing of the plug in use, according to the invention, a retaining hook 29 is formed in the insert 20, the free end of which is covered by the front wall 58 of the guard. In the installed state of the plug, the sawtooth portions 47 in the cutting Z-branch 44 engage, as best seen in FIG. in the area surrounding the selected bore 14 in the wall area of the cover

As already mentioned, it is of course possible to obtain a second contact of the cable conductors 32 of the knife 41 with a differently curved knife in the plug by a suitable selection. When this occurs, it can also be noticed externally, whereby the cover 10 can be left on it, but then an insert is selected, the core part 22 of which is differently profiled, e.g. the ribs 51 have an active position and dimensioning. In this way, accidental replacement of a plug with a different contact can be prevented, and yet a uniform construction of the plug from smaller components is ensured.

In Fig. 5, the dotted lines 60 show the parallel contact planes of the contact points in the insert, which are aligned with the longitudinal travel of the bores 14 of the cover 10, after which they have already entered the cover. Further in Fig. 8, the dotted line shows a fitting plane 61 perpendicular to the bores 14, with optional penetration points 49 and guide chambers 17 for optional entry of a knife 41 for insertion into a specific contact point 48, and control chambers 17 for the search for a knife. It should also be mentioned that according to Fig. 3, the insertion direction 53 into the insert 20 of the knife 41 is the same as the insertion movement 50 mentioned in the cover 10 of the insert 20. Thus, detachment of the inserted knives 41 during the plug installation step is excluded. In Fig. 9, reference numeral 59 denotes the displacement of the contact point 48 from the selected penetration point 49 in the cover 10 and corresponds to the length of the Z-stage 43 belonging to the knife 41.

Claims (20)

1. Plug connector for electric band cables with a) a plurality of conductors (32) lying on a plane wide within one common cable sheath (31), in particular for remote communication technology, b) a housing (10, 20) with a channel (11) to receive the end (30) of the cable, wherein, (c) the channel (11), projecting from the wide, to attach the starting portion (12) of the cable sheath (31), tapered to the end portion (13), d) the inside width of the channel corresponds to the cross-section of the mantle-free, but still with its entire insulation (33) on its conductor (34) carrying conductors (32), wherein e) is arranged in the housing (10, 20), along the insulated conductors (32), directed in the channel (f) which, when used with its cutting end (44), located in the respective case inside the cover, penetrates the lead insulation (33) all the way to the line (34) and with its other, outside the cover (10). 20) existing contact ends (42) are arranged in fixed contact points (48); beats have the same, similar alignment to each other, characterized in that h) the housing consists partly of the receiving channel (11) containing the cover (10) and partly of a perforating contacts (41) remaining, insertable in the cover (10) (20). , (i) the end portion of the receiving channel (11) located closest to the shield is divided into mutually separated (15) bores (14), which individually receive the insulated conductor (32) (k) of the cable (10), in line with the shield (10). in the position of the conduit (34), each bore (14) has several, in each case in the insertion direction of the insertion, alternative penetration locations (49) towards the cutting ends (44) of the penetration contacts (41), l) that the penetration contacts are Z-shaped curved blades ( 41), m) whose z-branches form at one end cutting ends (44) and at the other end contact ends (42); and n) in each case the knives, connected with the respective side displacement (59) between the fixed contact locations (38) in the insert (20) and the desired penetration locations (49) in the cover (10), can be selected from a group of different degrees z-shaped curved (43) knives, and that o) the selected knives (41) can be interchangeably inserted with the sinew contact ends (42) forming z-branches in the insert (20) and provide z-branches (44) with the sinew cutting ends. the selection of knives corresponding to the fitting model in the insert (20) and that a design-unit contact group together with the insert (20) can be pressed into selected penetration locations (49) in the cover (10). Plug connector according to claim 1, characterized in that the alternative penetration locations (49) have been defined for the cutting ends (44) in the control chambers (17) provided in the cover (10) which lie in the insertion direction of the insert (20). Connector according to claim 1 or 2, characterized in that in the mounting space of the insert (20) in the cover (10), the contact points (48) for the blades (41) are arranged in one or more rows (60) in the insert, which are parallel with the bores (14) located in the cover (20) receiving the insulating conductors (32). 4. Plug connector according to any of claims 1-3, characterized in that in a certain contact location in the insert (20), a group in the same alignment plane (61) in the protection alternate passageways (49) is arranged in parallel. 5. Connector according to claim 3 or 4, characterized in that the alignment plane (61) for the alternative passage points (49) in the cover (10) is perpendicular to the direction of the insulated conduits (32) of the rooting holes (14). 6. Connector according to one or more of claims 1 to 5, characterized in that before the installation of the base (20) provided with knives (41) in the cover (10), the bores (14) have at the end closest to an attenuating control chamber ( 17) a closed wall (18) which can be pierced first upon installation of the cutting edge forming Z-branch (44) of the knife (41). Plug according to one or more of claims 1-6, characterized in that the base (20) in the mounting state has on the side nearest the cover (10) a shelf space (23) for receiving the various of the knives (41). Z-shaped curves (43), corresponding to the choice of knives. Plug according to one or more claims, characterized in that the base (20), especially in its heel compartment (23) has mounting points (25, 26), on which the knives (41) can be supported with different Z-shaped bends (43). . 9. Plug in accordance with claim 8, characterized in that the mounting points consist of the Z-bends (43) in the receiving direction (25) of the knives (41) in the direction of the knives (62). 10. Plug in accordance with claim 8, characterized in that the installation surfaces consist of lateral shoulder areas (26) which follow the initial regions of the Z-branches connected to the bend (43). Plug according to one or more of claims 1-10, characterized in that the Z-shaped blades (41) projecting from the side closest to the cover (10) can be inserted into the base (20) in the same direction (62), where (50) ) socket (20) 21 76221 later for mounting purposes can be connected to the cover (10). Plug connector according to one or more of the patent racks 1-11, characterized in that the base (20) consists of a mounting member (21) which is engaged in the guard (10) and an outer contact points (48) for the Z-shaped knives. (41) controlling core portion (22). Plug connector according to claim 12, characterized in that the mounting part (21) can be connected to the cover (10) with the hall support (53, 54, 55, 56). Plug connector according to claim 12 or 13, characterized in that the core part (22) has a groove (27) in the knitting direction (62) of the knives (27) with cut-back T-profiles for receiving the Z-branches (42) forming the contact ends. Plug connector according to the nigot of claims 1-14, characterized in that the insulated conductors (32) in the cover (10), in each part piece, are fixed individually mechanically (39), which part piece is located between a cutting edge of the knife (41) (44) is intended for the selected penetration point (49, 17) and the point of attachment (12, 36) of the cable jacket (31). Plug connector according to claim 15, characterized in that the support points (39) of the individual conductors (32) at the transition point of the receiving channel (11) are adapted in an area of the control chambers (17). Plug according to Claim 15 or 16, characterized in that the support point (39) is arranged against the base (20) in an open blind heel (38) present in the cover (10). 18. Plug according to one or more of claims 15-17,