KR20000022477A - Method for contacting multi-core round cables without skinning, and corresponding contacting device - Google Patents

Abstract

PURPOSE: The contacting method and contacting device provide a more simple and economical means of contacting the leads of a multi-core round cable safely, compared with known devices. As a result, these inexpensive round cables, which are always provided as standard cables,can be used in a substantially wider range of applications and use can be made of the advantages that they have over coded flat cables. CONSTITUTION: The device relates to a method for contacting the conductive lead cores of a round cable electrically, said round cable having at least two twisted, insulated leads encased in a sheathing consisting of insulating material. According to the inventive method, the contacting is carried out without the sheathing being removed and the positions of the points of contact are determined from the course of the leads. The device also relates to a contacting device for carrying out this method. The penetrating contact elements (8-10, 34, 62, 71, 79, 82) are arranged on a contact piece (18, 31) to correspond with the positions of the points of contact determined from the course of the leads. Said contact piece consists of insulating material and can be pushed forward with the penetrating contact elements (8-10, 34, 62, 71, 79, 82) against the sheathing (3, 45) of the round cable (7, 36).

Description

Method and apparatus for connecting without stripping multi-core round cable

For the connection of insulated single-core cables it is known to penetrate the insulator by means of a connection bar (eg DE 39 09 648 C2) or a cutting press (eg DE 42 14 711 C1, DE 44 37 791 C1). This technique is simpler and cheaper than known methods of connecting lead cores by stripping after soldering or by crimping.

However, in multicore round cables, known connection techniques are expensive because the leads must be individualized. For this purpose, the cable sheath must first be removed around the connection point. This is also complicated at the cable end and simply cannot be done because of the risk of damaging the leads by the stripper. In particular, this is the case when the connection is not made at the beginning or at the end of the cable and the removal of the ring-shaped sheath part is required, for example as disclosed in EP 0 392 422 B1.

In addition, the leads twisted together for individualization are dismantled so that the leads can be arranged with sufficient mutual spacing at the target connection point. For this purpose, an additional means is required, namely a contact chamber, for example formed by a separating wall, as is known in the connector according to EP 0 392 422 B1 (see Figure 2).

For the reasons mentioned above, multi-core round cables can be used economically only in a limited range despite their low cost. In particular, multi-core round cables are unsuitable for various connection possibilities in networks such as bus systems, domestic distribution systems, closed circuit lines and the like.

The present invention relates to two connection methods and a connection device according to the preamble of claims 1, 12, 16 and 29.

1 is a cross-sectional view of a cable plug connector connected to an end of a round cable using a connecting device according to the present invention, in which case the cable sheath in the inner chamber is cut to show a lead course,

2 is a perspective view of the cable plug connector with the connection device open;

3 is a perspective view of a connecting device to be connected to an end of a four-core round cable having a plug connector and a splice in an unassembled state (FIG. 3A) and an assembled state (FIG. 3B),

4 is a perspective view of a unit configured as a cable connector composed of two connection devices for a through connection element,

5 is a perspective view of an additional unit consisting of an amplifier or branching device consisting of three connection devices for a through connection element,

6 is a perspective view of a cutaway view of a round cable bus line with subscribers connected to the round cable bus line;

7 is a perspective view of an eight-core cable splitter or branching device,

8 is a schematic perspective view of a through connection element formed of a cutting press having two staggered arms, connected to a cable lead,

9 is two embodiments of perspective views of a triangular through connection element connected to the cable leads shown partially cut away;

10 is a cross-sectional view schematically showing the connection state of the shielded round cable,

It is a side view which cuts and shows the connection device for fully connecting a lead in the pre-assembled state.

It is an object of the present invention to provide a connection method and apparatus which can reliably connect the leads of a multicore round cable in a simple and inexpensive manner.

This object is achieved according to the invention by a connection method according to claims 1 and 12 and a connection device according to claims 16 and 29. The two methods and apparatus differ only in terms of their connection. That is, one connects through the shell and the other over the front of the lead core. However, in two cases, the idea of connecting the leads of the round cable without stripping and lead individualization is realized compared to the prior art.

The elimination of stripping not only eliminates complicated and difficult work processes, but also eliminates the risk of damaging the leads by the stripping machine. In addition, the leads no longer need to be individualized; Rather, the leads can be connected at their unchanged twisted positions, and the knowledge of the lead course (claims 1 and 16) allows the position of the leads at any place on the cable, so that accurate and reliable connection can be made. Can be. In the front connection (claims 12 and 29), the connection can be made at the beginning or end of the cable due to the known lead structure.

Stripping-free connections are known, in which connection points are obtained from lead courses by flat cables coded with an asymmetrical cross section in connection with the correct connection, for example used as two-core bus lines in so-called actuator-sensor-interface-bus systems (see reference). DE 43 20 327 C1). Here, the connection points along the cable always have the same axial spacing parallel to the cable axis due to the straight lead course, so that a reliable connection of all the leads, for example by means of the through point bars, can be made simply.

However, this form coated flat cable is, unlike multi-core round cables, a special line which is not good for commercially available standards. In particular it is very expensive and a corresponding number of cables with different cross sections are required for different codings.

In addition, these cables do not fulfill many of the technical requirements met by conventional multi-core round cables. For example, a conventional multi-core round cable can be bent in all directions without limitation, whereas in flat cables it is only possible transverse to the cable axis about the axis. So-called alternating flexibilities are important prerequisites when used as braking chains on cable shafts that are movable in handling automation devices such as robots or when moving in ducts. There is also a risk of sticking by inadvertent ring formation during the movement of the flat cable.

In terms of sheath material selection, tensile strength and space requirements, multicore round cables have significant advantages over corded flat cables. In other words, in flat cables, the required shape stability of the sheath can only be achieved by means of an insulating material, the unguided lead guides permit significantly smaller tensile loads, especially in the direction of the leads in which the dimensions of the cable are arranged parallel to each other. Significantly increased by number, these flat cables are unsuitable for many applications due to large place requirements. In addition, unlike asymmetric flat cables, the placement of leads can be chosen in a preferred manner in multi-core round cables.

Because of the advantages described above, it has long been desired to use multi-core round cables instead of coated flat cables. However, this has so far been in vain because, on the one hand, the processing for the connection is complicated, in particular by stripping the cable and individualizing the leads, and on the other hand, the known simple flat cable connection is a This is because it cannot be applied due to its twisted lead guides.

The invention according to claims 1 and 16 allows a multicore round cable which is inexpensive and always available to a sufficient degree as a standard cable, to be used in a significantly wider field of use than ever. In this case, due to the twisted leads running to all the respective positions around the cable, the connection method and the connection device can be particularly preferably used even for a combined cable composed of a plurality of multicore individual cables. In this case, the individual cables can extend parallel to the axis or the sides thereof can be twisted again. If a through technique is used for the connection, the through connection element only needs to be formed to penetrate the two cable sheaths and additionally the lead insulator.

The invention according to claims 1 and 16 takes advantage of the fact that the lead is twisted in the manufacture of the multi-core round cable, and when twisted with each other it is given an "impact" calculated according to the number of winding turns, the forward and the number and diameter of the leads. The impact is the same by constant maintenance of the above parameters over the entire cable length and can be selected and reproduced for all cable types. The term "impact" means the axial spacing of the same leads after one revolution of the winding (360 °). In addition, the axial spacing of adjacent leads can be calculated by the size.

With respect to the lead placement at the beginning of the cable or the knowledge of the placement and position of at least one lead at any cable point and the winding direction, the position of all leads along the entire cable is detected, thereby ensuring The connection can be made without stripping and individualization of the cable.

In the use of round cables, the connection points of the individual leads must be detected only when they are originally fixed by a lead course parallel to the axis in the flat cable, but this additional cost is only added once for all types of cables, which is particularly important in a wide range of uses. Not.

By the elimination of complex and costly stripping and lead individualization and thus simple connection, the use of cheap round cables becomes significantly cheaper than known flat cables. In addition, there is no risk of lead damage during stripping.

The above advantages also apply to the case of front lead connection according to claims 12 and 29. The connection of the lead core of the round cable by the connecting point bar inserted axially from the front side is already known from German Patent No. 44 18 259 C1 and German Patent No. 43 18 800 C2. However, in both cases-as in the already cited connection-the end part of the cable must be stripped and the individual leads separated from each other at this part.

Round cables which are inexpensive and always available as standard lines by means of the connection method according to the invention and the connection device according to the invention can be used in a wider field of application, for example in bus and closed circuit lines, especially in handling automation devices. In particular for devices with long cable lengths, such as branched bus networks, the cost advantage over the use of coded flat cables can be very important. Of course, it can also be used for special applications such as branching of current or signals from household power distribution devices, for example consisting of round cables, ie from control lines.

However, the possibility of using round cables is not only desirable from a cost standpoint, but also requires a significantly smaller location in the lead plane compared to flat cables, especially in the case of a large number of leads, so that the connection can be designed with significantly smaller dimensions. have. This improves its usability.

More desirable sealing possibilities are also important, because the known asymmetric flat cables require expensive profile sealing, while round standard cables (eg sealing rings) can be used. In special cases, the higher tensile load capacity of the round cable due to the leads twisted together can preferably be used. With the method and the connection device according to the present invention, the connection is significantly cheaper than the conventional method requiring stripping of cables and individualization of leads. That is, the more connection points are provided, the cheaper it is. In addition, the round cable makes a greater choice in terms of its material properties, such as the chemical resistance of the sheath or the likelihood of warpage. Thus, round cables have a wider use since they actually meet different needs better than flat cables. Finally, the spatial placement of the leads in the round cable can be chosen, unlike the flat cable. This increases its matching possibilities for individual uses.

The connecting device is formed of a connecting device, a branching device, a distributor or a connecting module with or without a plug-in connector, optionally including an integrated device such as an actuator or a sensor, and connected to the lead of the round cable at the cable end and at a specific place of the cable. Can be connected. Thus, a simple, inexpensive and easy-to-manage connection technique using round cables is provided.

Basically it does not matter whether the leads contain cords or solid wires, but the main field of use is the simple connection of stranded wires.

The dependent claims show a preferred embodiment of the method according to claims 1 and 12 and a preferred embodiment of the connection device according to claims 16 and 29.

Knowing the cable type and impact, the number and placement of the leads, it is only necessary to know the position and winding direction of the leads at any place of the round cable to calculate the desired connection point of all leads at certain other cable points. Therefore, the connection method according to claim 2 is suitable not only for connecting the round cable at the cable end but also for connecting the round cable at a predetermined point of the cable. In particular, the setting-location of the connection members of the connection device is thus easily determined and the device is implemented accordingly. When the connecting member is placed in the detected position of the associated lead, all remaining connecting members are automatically placed at the correct connection point. Thus, the connection is made simpler.

The marking of the lead position according to claim 3 by marking is especially true when the cable end for identifying the lead position is not visible or the cable end is inaccessible, as is often the case when used in long bus lines or closed circuit lines. The method according to the invention can be used in a very simple manner. A precondition for this is that the marking is made in the accessible part of the cable and the marking is placed in the vicinity of the desired connection point.

This usually occurs when the cable length is short, so in this application usually only one marking needs to be provided according to claim 4. This minimizes the marking cost.

The connection method according to claim 5 is slightly more complicated, but is much more suitable in practical use, since the position and winding direction of the lead at a certain point in the cable can be detected or need to be detected directly irrespective of the length of the cable. Because there is no. By the data known by the cable type, i.e. impact, the number and arrangement of leads of different colors, a constant connection point of all leads can be determined with a minimum of time and calculation cost and accordingly the arrangement of the connection members of the connection device Can be.

As an alternative, marking may be provided, preferably on the skin surface (claim 6) or inside the skin (claim 7). In the first method, the marking is made simple and inexpensive at the same time as the exact arrangement of the marking. The second method ensures marking independent of external mechanical and / or chemical influences, but the precise placement of the marking is not straightforward.

Optionally, the marking may be provided in solid line (claim 8) or in broken line (claim 9). Embodiments according to claim 8 provide precise connection points that cannot be precisely defined because they are placed in the interspace at the manufacturing surface (eg by color pins extending with the winding axis) and in the dashed line-at the marking provided on the skin surface. It is simple and certain in terms of the possibilities it can find. In comparison, the advantage of less consumption of the marking means in the method according to claim 9 is less important.

Particularly preferred connection methods are given in claim 10. Not only can the coded pattern indicate the exact course of one or more leads or its exact location, but also the cable type (coded) can be conveyed together as information. The information about the cable data makes it possible in particular for automatic manufacturing. The automation device can, for example, query important cable data from the bar code, so that the relevant connection device can be supplied to each cable in the required position and arrangement for the connection. Thus, the method according to the invention is also suitable for economic mass production of multi-core round cables.

The method according to claim 11 in which the marking is formed of a conductive material has the above advantages of automatic manufacturing using position detection by querying cable characteristic data. This is particularly suitable for placement inside the sheath, because it can be "read" from the outside, protected from damage, and at least difficult for the undesirable use of the cable by a third party in the corresponding coding. Because.

As the lead core expands in the radial direction when the front side pressurizes the connection point bar, and the smaller opposite side spacing is smaller, the aforementioned air section and leakage section between the lead cores are no longer maintained at the front of the cable. This risk can be avoided by the features of claim 13 in a simple manner.

Of course, the free end face of the lead core has no individualization and therefore already has too little opposite spacing in relation to the required air section and the leaking section without the front axial insertion of the connection bar. Thus, for example, the spacing enlarged by the splice according to claim 13 is also preferable when the connection of the cable end region is made through the cable sheath.

Preferably, when leaded to the front side, the cable end is wrapped by an insulation, which is already present to receive the through connection element, preferably the connection bar. The bush as described above, on the one hand, supports the extension of the lead and at the same time creates a corresponding pressure that increases contact pressure and contact safety when the connection bar is inserted.

The connection via the front face of the lead core as well as the connection by means of the cable sheath is preferably also possible without connection (claim 14), ie by capacitive coupling or inductive coupling, or according to claim 15 such as a connection bar or a cutting crimp element. It can be made galvanically by a through connection element. The latter method is characterized by a simple and secure connection made at precisely defined points and is suitable for all frequencies not only by the transmission of direct current but also by the transmission of alternating current, while the connectionless connection is actually limited to the use of high frequencies.

In both cases the sealing force of the connection points is achieved without special sealing measures.

According to a preferred embodiment of the connecting device of the present invention according to claim 16, according to claim 17, the through connecting elements are provided to the contact members at equal intervals in succession with each other in the axial direction, the intervals between which the adjacent leads are separated from each other. This provides a simpler and relatively non-critical configuration of the connection device in terms of the precise arrangement of the through connection elements, which can be manufactured at low cost. Such a configuration is particularly advantageous when the number of leads is small, but in a multi-core cable this configuration has a relatively large axial length that cannot be supported in all applications.

By being configured so that the multi-core round cables are twisted together, a shortening of the contact member and a shortening of the connecting device are achieved simultaneously with the arrangement of the through connecting element according to claim 18, whereby the multi-core cable can also be realized in a short length. The minimum axial length is achieved when all through connecting elements are arranged perpendicular to the cable axis in only one plane.

In this case, if the spacing on the opposite side of the contact element being pushed into the lid must be very small, taking into account the space requirements and in particular the air section and the leak section described above, this can be most simply avoided by threading the through connection element in an axial direction. .

The through connection element is covered by the contact member or part during the connection process, so that axial insertion can be reliably ensured, especially when connecting manually. This can preferably be avoided by having the contact member have visible marks assigned to one lead defined according to claim 19. The same effect can be achieved if the marking is assigned to a visible through connection element during assembly.

The same solution is when the round cable has one mark, the spacing of the marks away from the target connection point of the defined through connection element coincides with the distance of the through connection element away from the contact member end, and consequently only for correct connection. Only the end of the contact member with the mark can be covered.

As a last further possibility, the spacing between the first through connection element and the contact member end can be chosen equal to the impact. In this case only the end for the connection can be covered by the marking of the cable provided at the target connection point of the associated lead.

Sufficient tensile load relief is already achieved for many cases by contact elements penetrating through the cable sheath and pushing into the leads. If higher requirements are raised there, the contact member can be achieved simply by forming according to claim 20. The means consists, for example, of pins integrally ejected with the contact member, so that a high cable crimp is reached without actually being costly, while the cable sheath and lead penetrations are no longer loaded. Thus, the sealing of the penetrating site does not deteriorate and no further sealing measures are necessary.

A particularly preferred embodiment of the connecting device according to claim 16 is described in claim 21. By such a simple configuration, all the through-connection elements arranged around the circumference are pushed into the lid in the radial direction to affect the optimum insertion depth and contact safety. At the same time, short circuits between the leads are avoided by inserting the through connecting element into the two lead cores, which is possible when the contact member is flat.

Preferably, the through connecting element according to claim 22 is distributedly arranged on an individual shell-like portion of the contact member. Thereby the maximum spacing between the through connecting elements can be reached on the one hand, and on the other hand the minimum length of the contact member and thereby the minimum length of the connecting device can be reached.

The support of the penetrating connecting element in the shell-like portion can be made by a circumferential injection molding technique, a spray-in injection molding technique or an adhesive technique in a conventional manner.

It is highly desirable if different numbers of through connection elements are provided in the shell portion. This allows the device, for example a 5-pole plug connector, to be combined with cables with different numbers of leads as required. For example, it can only be produced in three different shell types. That is, 2-, 3-, 4- and 5-core cables can be produced in the absence or two and three through connection elements or one, two and three through connection elements.

In addition, the shell parts having different types of through connection elements can be matched to various cable types as well as achieving differently formed terminals of the one type of cable (different assignment of through connection elements to the leads). Can be.

Placing the through connection element in the shell-like portion of the contact member (eg half shell) is matched to the lead continuation of the cable to be connected. In two- and four-core cables, a half shell in the form of the same through connecting element can be used assembled by 180 ° displacement at the beginning and at the end of the cable.

In a further preferred embodiment of the connecting device according to claim 16 provided in claim 23, the shell-like parts of the contact member are elastically joined to one another at the opposite end of the cable. The coupling portion may be a thin film hinge that can be easily manufactured in the same process according to claim 24. The contact member is formed in one part by the hinge, thereby minimizing the number of missing parts of the connection device.

For assembly the contact member is open at the cable end, pushed through the cable end and closed at the target position, in which case the through connecting element is inserted into the cable lead through the cable sheath.

If the connection is to be made at the cable course and not at the cable end, the formation of the contact member according to claim 25 is preferred, since the shell-shaped portions can thus be arranged around the cable before they are pressed together.

For continued safety, a bush is provided which tightly surrounds the contact member after the connection is made according to claim 26. In a non-complicated yet effective embodiment the bush is a spigot nut provided on the outer thread of the contact member (claim 27).

If the bush is closed, of course only the cable end can be enclosed. A separate bush or bush constructed similarly to claim 25 is required for assembly into the cable course, which is closed after the connection is made. If the contact members do not need to be protected, alternatively the shell-like parts of the contact members are fixed to each other themselves. For example screwed together.

A further preferred embodiment of the connection device according to claim 16 is described in claim 28. Here, not only the connection by a contact member (for example in the form of a half shell) but also the protection by the bush is achieved in a simple manner.

In the second connecting device according to claim 29 for front-side connection by pushing the through-connection element into the lead core axially, the cable end is extended. This expansion is further enhanced when expansion is made using the splice according to claim 13 to achieve a sufficient air section and a leak section.

According to a preferred embodiment of the cable holder portion surrounding the round cable according to claim 30, the necessary enlargement of such cable ends is possible without any problems and at no extra cost.

According to a further embodiment according to claim 31, the front side of the cable holder is provided with an identifier assigned to a particular lead, which may be formed as a coded recess (or complementary coded nose) according to claim 32. Thus, not only the precise arrangement of the round cable in the cable holder but also the precise arrangement of the through connection elements assigned to the individual leads is achieved in a simple manner. In addition, only one measure can be provided for identification and coding, which reduces manufacturing costs.

In a preferred embodiment of the connecting device according to claim 33, it is preferable to implement the plug connector part as a constituent unit together with the rest of the connecting device, not only for reasons of cost, but also for greater stability and more advantageous control surfaces. For example, the bushes provided in claims 26 to 28 may simultaneously form a plug connector housing.

By means of the unit, the joining of two or more correspondingly shaped cables, which can be disassembled outside of a simple cable structure, is possible either directly by means of one another or by means of devices or by means of a distributor or branch device, in which case the plug connector part Or it may be formed of each plug connector.

A further preferred embodiment of the connecting device according to the invention is also described in claim 34. In this case the circuit can be for example a user at a cable end or a subscriber (eg an actuator) which can be connected to a penetrating bus line. The circuit is likewise embodied as a constituent unit with the rest of the connecting device and can be arranged in one common housing. The building unit may just be part of the device (eg a circuit board).

According to a particularly preferred embodiment of the invention according to claim 35, at least two contact members are merged into one unit. The unit, which can be simply manufactured, inexpensive and compact, can be formed with straight or angular cable connectors which are simpler and cheaper than double or multiple distributors or single or multi branch devices. By correspondingly coupling the through connection elements of at least two contact members, different cable types of the same number of leads can also be joined together.

No plug connector is required in the unit. Nevertheless, it is of course possible to provide plug coupling to one or more contact members.

Instead of interconnecting two or multiple contact members directly or via a plug connector, it may also be desirable to engage via a connection member according to claim 36. This makes the mechanical construction simpler, especially when interconnecting multiple contact members.

In the simplest embodiment the unit is a galvanic coupling between the cables or circuits or the galvanic coupling of the circuits and cables (claim 37). In cables with different numbers of leads and different cross sections, the relevant leads are joined together.

According to a preferred embodiment according to claim 38, the connection member may also include circuits such as amplifiers, damping members, distribution circuits or branch circuits, signal expanders, repeaters and the like as required. In many applications a combination of galvanic coupling in the circuit and in the connecting member is also desirable. Preferred embodiments of the above scheme may be formed by plug connector coupling as well as direct coupling.

A preferred embodiment of the through contact member is provided in claim 39. By means of such simple and inexpensive means, the connection device can also be used for shielded multi-core round cables without being threatened with a short between screen and lead. If a cable screen is to be further connected, this is simply possible by the formation of a connection device according to claim 40.

Claims 41 to 45 describe a preferred alternative embodiment of a through connection element, in which a particularly secure connection is achieved by means of a through connection element according to claims 43 and 44. In the embodiment according to claim 43, the lead core is connected not only centrally by the through point bar but also between the cutting presser arms by pinch. Since the lead core is supported between the cutting presses and cannot escape upon insertion of the through point bar, high contact pressures are reached at all contact locations.

The formation of the cutting presser arm with the point according to claim 44 allows the lead insulator to penetrate safely at low power consumption, thereby enabling manual connection by crimping the contact member even when using a multi-core cable.

When using the cutting presser arm formed according to claim 45, undesirably cut insertion into the lead core is effectively prevented.

In an embodiment of the cutting presser according to claim 46 the two cutting presser arms are bent (crossed) from the common cutting presser shaft plane in opposite directions. The connection is thus not made transverse to the lead shaft as in a standard cutting press, but rather the cutting presser arms are arranged continuously in the direction of the cable shaft. In this case the plane of the cutting compactor shaft likewise runs in the axial direction of the cable. Thereby the contact element requires much less space in the direction compared to a normal cutting press with a cutting presser arm arranged transverse to the axis, thereby again reaching a larger mutual safety clearance of the through connecting element. .

This advantage does not actually require additional costs since the through connection element is manufactured as a perforated bend in one work process. In addition, the cutting compactor can be implemented relatively stronger without significantly expanding the space requirements, resulting in increased stability of the cutting compactor arm.

Finally, the cutting presser arm is pushed into the lead by twisting the lead with an edge towards the individual lead (and no flat portion) running at an angle to the cable axis. This allows the lead insulation to be safely disconnected without damaging the lead core, thus ensuring effective connection.

The same action can also be achieved by a standard cutting compactor having a cutting compactor arm which is actually quadrangular without being staggered with each other according to claim 45 arranged obliquely with respect to the lead axis.

Embodiments of the present invention are described in detail below with reference to the drawings for different connection devices and parts.

The cable plug connector 1 shown in FIGS. 1 and 2 is an insulated lead of a three-core round cable 7 wrapped by an outer sheath 3 using three through point bars 8, 9, 10. Spigot with connecting device 2 for connecting 4, 5, 6, plug contact support 11 for accommodating plug contact elements 12, 13, 14 realized as a knife contact and handle protrusion 16 The nut 15 and a sealing ring 17 for sealing the cable inlet opening of the spigot nut 15.

The connecting device 2 comprises two plastic-injection molded parts 19 and 20 in the form of a shell forming the contact member 18, which is injected at the cable side end by a sprayed thin film hinge 21. It can be coupled to each other and rotatably joined around the hinge. The shell-shaped portion 19 which occupies approximately three quarters of the circumference supports the outer thread 19a, and the spigot nut 15 can be screwed on the thread with the contact member 18 joined. have.

The first shell form 19 is manufactured integrally with the plug contact support 11 by an injection molding method, and is molded integrally with the associated knife contacts 12, 13, 14 via a conductive coupling 22. Support the through point bars 8, 9, 10. The through point bars 8-10 are formed so that they do not penetrate the core insulation 23 on opposite sides, but are inserted correctly into the associated cable leads that will each be engaged with the corresponding knife contact by its spikes. And are arranged successively in the axial direction. The position of the through point bar is calculated based on known data of the cable type used.

The second shell portion 20 includes a pin 24 protruding therein, and a round cable 7 is guided between the inner surface of the pin and the shell inner wall. The pin 24 simultaneously acts to relieve the effective tensile load when the shell shaped portions 19, 20 are pushed together.

The round cable 7 has a through marking line 25 provided on the surface of the shell 3 which shows the course of the selected core. Corresponding to the course, the cable 7 is mechanically cut in place and then according to a given alignment, ie the spikes of the marking arrow 26 on the front side 27 of the shell-shaped part 20 are precisely It is inserted until it stops at the shoulder 28 provided in the pin 24 on the plug side to indicate the kingned core. In this position the through point bars 8-10 are correctly assigned to the associated connection points of all three cores.

Therefore, the manufacture of the round cable 7 is extremely simple and therefore not only suitable for simple hand-manufacturing but also best suited for low-cost mass machine production. In the case of mass production, bushes are generally not used and contact members are injected around.

First, in order, the shell shaped portion 20 of the spigot nut 15, the sealing ring 17 and the folded contact member 18 is described above until the end section of the cable is connected to the shoulder 28 together with the front face. It is moved over the end section of the round cable 7 extending as one. The shell 20 is then rotated until the spike of arrow 26 points exactly to the center of the marked core. The shell-shaped two parts 19, 20 are then pushed together, in which case the through point bars 8-10 are inserted into the associated lead cores so that the associated knife contacts 12-14 and the cable cores ( 4-6) to make a continuous galvanic bond. At the same time, the tensile load reduction is achieved by pushing the pin 24 toward the cable 7, and as a result, the connection point itself is not loaded even in strong tension.

Finally, the spigot nut 15 is screwed onto the contact member 18 until it is connected to the ring-shaped flange 29 of the plug contact support 11. Thereby, on the one hand the shell forms 19, 20 are supported together for the continuous maintenance of the connection, on the other hand further ring-shaped arranged on the outer surface of the sealing ring 17 and the plug contact support 11. By pushing the seal 30 together, the cable plug connector 1 is sealed.

In the cable plug connector according to FIGS. 3A and 3B, the contact member 31 consists of two identical half shell portions 32. The half shell portions are supported together by rubber rings 33 (FIG. 3A shows that the half shell portions 32 are assembled on the round cable 36 by being pressed against each other-for example, by finger pressing). have).

The half shell portion 32 includes two through spikes 34 each projecting radially from its inner surface for connecting the four leads 35 of the four-core round cable 36, the through spikes being It is directly integrated with the four knife contacts 37 protruding in the axial direction of the half shell portion 32. The two end sections 38 of each half shell 32 are tapered in the form of cones as they move toward the free end.

A connector portion 39 is also provided, which comprises a contact support plate 40 having a recess for penetrating the knife contact 37 and a thread not shown, wherein the spigot nut 42 is disposed on the thread. Is screwed up to the contact portion 41. The connector portion 39 and the spigot nut 42 each comprise one conical inner surface 43 which coincides with the conical end region 38 of the half shell portion 32, the connector portions 39 being mutually opposite in the radial direction. By compression, the so-called spikes 44 are further included in order to increase the mutual spacing of the leads 35.

In the embodiment of the cable plug connector with the connection device for the round cable according to the present invention also the production can be made suitable for simple, quick, inexpensive and mechanical implementation.

To this end, the pair of half shells 32 first pressed against the power of the spigot nut 42, and then the rubber ring 33, the contact spikes 34, It is provided on the end section of the cable 36 to be accurately positioned at the target connection point determined from the course. After releasing the half shell portion 32, the contact spike 34 is already pushed into the cable sheath 45 to some extent by the power of the rubber ring 33 to stabilize the position of the contact member 31. Then, the plug portion 39 and the spigot nut 42 are moved through the contact member 31 from both sides and screwed together. In this case the corresponding conical surfaces 38 and 43 are slid along each other so that contact spikes 34 are inserted radially into the associated lead core so that the half shell 32 is supported in this position.

At the same time, knife contacts 37 penetrate the recesses of contact support plate 40 to form unique connector regions. In addition, the spike 46 of the spiker 44 is inserted from the center into the front of the cable 36, in which case the relative spacing of the leads in the front plane is wide enough to keep the required air and leak sections safe. do.

The cable connector according to FIG. 4 and the distributor or branch device shown in FIG. 5 consist of two or three connection devices 47 as already described in detail in the cable plug connector according to FIGS. 1 and 2.

The connecting devices 47 are combined into one unit by the connecting members 48 or 49, respectively. That is, electrically and mechanically coupled to each other. The electrical connection can be, for example, a purely galvanic bond of the through point bars 8-10, by which the "classic" cable connector is produced. The connection device may also consist of a specific electrical circuit, for example an intermediate amplifier or repeater for processing a signal. In particular in the high frequency-use example according to FIG. 5 a distributor or branching device is ensured, for example, to ensure sufficient disassembly of the terminals.

In this embodiment, the connecting members 48 and 49 are integrally manufactured with the shell 19 by an injection molding method for mechanical coupling. Alternatively, the connecting members 48 and 49 can comprise a threaded sleeve, which is threaded with the spigot nut.

The connection and sealing of the contact member 18 is effected by screwing the spigot nut 15 onto the thread 19a as in the embodiment according to FIGS. 1 and 2.

6 shows an example of application of the present invention to a bus system. The bus line is formed of a multi-core wireless cable 51 from which, for example, data signals can be provided by subscriber stations 52, 54. Typical subscribers are, for example, actuators (magnetic valves and electric lifting magnets) or sensors (light barriers, proximity switches, etc.). The subscriber is provided with a corresponding housing 53, since the subscriber must be dense and most stably provided against disturbing light rays.

A connecting device according to claim 12 implemented as a branching device for electrically connecting subscriber circuits or subscriber devices is provided, the through-connection elements of the device being pushed directly into the leads of the bus line 51.

In a subscriber station 52 directly in the immediate vicinity of the bus line 51, the station is provided in a single housing 53, preferably together with the branch device.

Alternatively, the farther subscriber station 54 is connected via a branch device cable 56 and a branch device connected to the bus line 51 and disposed in one housing 55, the lead of which is connected to the device. It is connected to the terminal. Even in this case the connection is made with the aid of the marking line 57 of the lead of the round cable 51 in the manner already described.

The principle of the branching device described above can be used, for example, to connect eight users in a bus net, as shown in FIG. 7 without actually attenuating the signal on the penetrating bus line 58. It can also be used for mid-branch devices.

By means of a compact structure, such as a simple and inexpensive connection and connection of a subscriber device which can be inserted into a housing 59 with an installed plug bushing 60 according to the invention the multi-branch device is constructed, manufactured and connected in terms of Particularly advantageous.

The cutting compactor contact 62 (claim 46) according to the invention shown in FIG. 8 has two compaction arms 63, which are curved in opposite directions from the plane of its shaft 64 Staggered), which is formed to end at the cutting edge 65. With this improvement achieved without significant cost compared to conventional cutting presses, the cutting press contact 62 requires significantly less space transversely to the axis, and the sheath 66 of the round cable 67 is easier. Through, lead insulation 68 is achieved and the contacts are safely operated. Thus, the cutting press contact is very good for the connection of the twisted lead 69 of the multi-round cable 67.

An alternative embodiment of the cutting compactor contact shown in FIG. 8 shows FIGS. 9A and 9B. Another through point bar 72 is inserted between the two cutting presser arms 70 of the through contact member 71 into the lead core 73. Thereby, the safety of the contact is further increased when manufacturing the through contact member 71 without significant additional cost. The contact is ensured by the through point bar 71 even when the cutting compactor arm 70 is not connected to the lead core 73-as shown in FIG. 9B.

All contact arms 70, 72 are provided with spikes 74 to facilitate penetration of the cable sheath and into the cable core 73 or into the core insulation 68. Conventional through point bars or cutting press contacts are not suitable for the connection method according to the invention in which the cable jacket is stripped, since the point bar or cutting press contacts are electrically connected with the screen during the penetration of the screen and lead the screen to the leads. This is because it can be cracked together.

10 shows the principle of connection of a multi-round cable 78 comprising a metal screen 77 and further the core 75 of the lid 76 of the screen, in which the disadvantages are simply and effectively avoided. . To this end, the insulator coating 81 is provided at the through point bar 79 except for the spike 80 which is pushed into the lead core 75, thereby providing a galvanic coupling between the screen 77 and the lead core 75. It becomes impossible. For connection of the screen 77 a general metal through point bar 82 is provided.

The second connecting device 83 described in accordance with claims 29-32, shown in FIG. 11, is assembled with a cable holder 84 and the cable holder 84 for receiving and fixing a round cable 85. And a contact portion 86 which can be screwed.

The cable holder 84 has a front member 87 for receiving a round cable 85, a collar 88 having an outer thread 89 and surrounding the front member at intervals, a front member 87 and a collar 88 And a so-called PG-screw engagement member consisting of a sealing ring 90 and a nut 91, a spring basket 2 and a seal 93 arranged between the shells.

The contact portion 86 consists of a cable side screw cover 96 for screwing the contact support 94, the plug side spigot nut 95 and the collar 88 onto the outer thread 89.

The contact members 97 to be arranged inside the contact support 94 each include an insertion bush 98 on the plug side and a through point bar 99 integral with the insertion bush on the cable side. The contact support 94 has a cable side formed of a splice 100 and includes a recess 101 for guiding the through point bar 99.

The contact support 94 also includes a cording nose 102 having a triangular cross section and extending in an axial direction, the arrow-shaped point of which indicates the axial direction of the connecting device 83.

The front member 87 supports the corresponding cording recess 103 and the corner 104 in the plug side end region, which narrows the wall of the contact member 87 toward the front side end.

For manufacture, the round cable 85 is first inserted into the front member 87 through the cable screw engaging portions 91-93 and to the front side stopper to be rotated, so that the point of the coding recess 103 is It will point over the cable lead selected in the center. The PG-screw coupling is then securely attracted to secure the round cable 85 in this position.

Thereafter, the contacts 86 are spliced until the cording nose 102 is inserted into the cording recess 103 and the cable leads and through point bars 99 are assigned as desired in a simple and effective manner. It is inserted into the contact support 84 forward with the (100). The enlargement of the cable end region made possible by the corner 104 at this time acts to ensure that the relative spacing of the lead core at the front of the round cable 85 satisfactorily meets the requirements relating to air sections and leak sections that are sufficiently large. do.

In addition, the walls of the corner 104 provide corresponding power to ensure sufficient contact pressure between the through point bar 99 and the stranded wire of the lead core.

The described second connection device enables fast and safe front access without peeling off the shell of the round cable.

Claims (47)

A method for electrically connecting a conductive lead core of a round cable comprising at least two twisted leads wrapped by an insulator jacket, the method comprising: Connecting through the skin without removing the skin, and determining the position of the connection point from the course of the lead. The method according to claim 1, wherein the course of the lead is determined from the position of the lead at the predetermined place of the round cable, the winding direction of the lead at the place and the impact of the lead, the number and the shape of the lead. 3. A method according to claim 2, wherein the position of the lead and the winding direction can be known by marking. 4. Method according to claim 3, characterized in that each position and winding direction of the lead is known by only one marking (25, 27). 5. Method according to claim 3 or 4, characterized in that the marking (25, 27) reveals the course and winding direction of the lead over the entire length of the round cable. Method according to one of the claims 3 to 5, characterized in that the marking (25, 27) is provided on the surface of the shell. The method according to any one of claims 3 to 5, wherein the marking is provided inside the envelope. The method according to any one of claims 3 to 7, wherein the marking of the lead position is made a solid line. The method according to any one of claims 3 to 7, wherein the marking of the lead position is broken. Method according to one of the claims 3 to 7, characterized in that a coding pattern, in particular a bar code, is provided as a marking of the position and winding direction of the lid. The method according to any one of claims 3 to 10, wherein the marking is formed of a conductive material. A method for electrically connecting a conductive lead core of a round cable comprising at least two twisted leads wrapped by an insulator jacket, the method comprising: And the connection is made through the front surface of the lead core without removing the skin. 13. The round cable 36 is preferably leaded according to any of the preceding claims, so that the separately required air section and the leaking section on the front face of the round cable 36 are maintained between the lead cores. 35) extending into the insulation of the retracting splice (44) between. The method according to any one of claims 1 to 13, wherein the connection is made without connection. The method according to any one of claims 1 to 13, wherein the connection is performed galvanically using a through contact member (8 to 10, 34, 62, 71, 79, 82, 99). A connecting device for electrically connecting a conductive lead core of a round cable comprising at least two insulating leads wrapped by an insulator jacket using a through contact member, The through contact members 8 to 10, 34, 62, 71, 79 and 82 are disposed on the contact members 18 and 31 made of an insulating material corresponding to the connection points determined from the lead course, and the contact member is a through contact member. And (8 to 10, 34, 62, 71, 79, 82) being pushed forward toward the sheath of the round cable (7, 36). The connecting device according to claim 16, wherein the through contact members (8-10) are provided in the contact member (18) in succession in the axial direction. 18. A connection device according to claim 17, wherein the through contact element (34) is arranged in the contact member (31) so that the circumference of the through contact element (34) is displaced and inserted into the round cable (36). 19. A connection device according to any one of claims 16 to 18, wherein the contact member (18) has a visible mark (26) assigned to a predetermined lead (e.g. 4). 20. A connecting device according to any one of claims 16 to 19, wherein said contact member (18) comprises means (24) for reducing the tensile load of the round cable (7). 21. The method according to any one of claims 16 to 20, characterized in that the contact members (18, 31) consist of at least two shell-shaped portions (19, 20, 32) surrounding the round cable (7, 36). The connecting device made. 22. A connection device according to claim 21, characterized in that the through contact member (34) is distributedly arranged on a small number of shell-shaped portions (32) of the contact member (31). 23. A connecting device according to claim 21 or 22, characterized in that the shell shaped portions (19, 20) are elastically joined to one another at the ends facing the round cable (7). 24. The connection as claimed in claim 23, wherein the contact member (18) is an integral plastic injection molded part, wherein the shell-shaped portions (19, 20) are joined to each other at their ends by the injected thin film hinges (21). Device. 25. A connecting device according to claim 24, wherein the n shell-shaped portions are joined to each other by n-1 thin film hinges (21). The connection according to any one of claims 16 to 24, wherein the contact member (18) and the round cable (7, 36) are tightly wrapped by the bushes (15, 24) in the contacted state. Device. 27. A connecting device according to claim 26, wherein the bush is a screw bush (15) that can be screwed onto an outer thread of the contact member (18). 28. The shell (42) according to claim 26 or 27, wherein the bush (42) and the contact member (31) have a corresponding conical surface (38), wherein the conical surface is a shell-shaped portion (32) of the contact member (31). And is arranged to be pushed toward the round cable (36) in the radial direction when inserted into the bush (42). A connecting device for electrically connecting a conductive lead core of a round cable comprising at least two insulating leads wrapped by an insulator jacket using a through contact member, A cable holder 84 formed to receive and support an end of the round cable 85 and an insulating material contact portion 86 that can be engaged with the holder are provided, the contact portion receiving the contact member 97. And a contact support 94 for forming the cable side of the contact member as a through contact member 99 and correspondingly in the axial direction when the cable holder 84 and the contact portion 86 are engaged with the associated lead. The connection device, characterized in that arranged. 30. A connecting device according to claim 29, wherein the inner diameter of the front member (87) of the cable holder (84) surrounding the round cable (85) extends in the form of a funnel toward the free end of the front member (87). The connecting device according to claim 29 or 30, wherein the front side of the cable holder has an identification portion assigned to a predetermined lead. 32. The device of claim 31, wherein said identification portion is formed by a coded recess 103 of the front portion 87, said coded recess working together with a corresponding coded nose 102 of the cable portion 86. Connection device. 33. The connector according to any one of claims 16 to 32, wherein the contact member (18) or the contact portion (86) comprises a plug connector portion (11, 39 or 86), and the plug contact elements (12 to 12) of the connector. 14, 37 or 98, characterized in that it is galvanically coupled with a through contact element (8 to 10, 34 or 99). 34. A connection device according to any one of claims 16 to 33, wherein said contact member comprises an electrical circuit, the terminals of said circuit being galvanically coupled with a through connection element. 35. A connecting device according to any one of claims 16 to 34, wherein at least two contact members are combined into one unit. 36. A connection device according to any one of claims 16 to 35, characterized in that at least two contact members (18) are joined to each other via a connection member (48, 49). 37. A connection device according to claim 36, wherein the through connection elements (8 to 10) are galvanically coupled to one another directly in the connection member (48, 49). 37. A connection device according to claim 36, wherein the through connection elements (8 to 10, 34) are coupled to each other via an electrical circuit in the connection member (48, 49). 39. The method according to any one of claims 16 to 38, characterized in that the through connection element (79) comprises an insulating layer (81) except for the portion (80) inserted into the lead core (75). Connecting device. 40. A connecting device according to claim 39, wherein an additional non-insulated through connection element (82) is arranged inside the contact member for connecting the cable screen (77). 41. A connection device according to any one of claims 16 to 40, wherein said through connection element is formed as a point bar (8 to 10, 34, 71, 79, 82) having at least one point. 41. A connecting device according to any one of claims 16 to 40, wherein said through connecting element is formed as a cutting press (62, 70). 41. The method according to any one of claims 16 to 40, characterized in that the through connection element 71 comprises at least two cutting presses 70 and one point bar 72 disposed therebetween. Connecting device. A connecting device according to claim 42 or 43, characterized in that the cutting presser arm (63, 70) ends with a point (65, 75) passing through the lead insulator (68). 43. A connecting device according to claim 42, wherein said cutting presser arm has a rounded end. 46. A connecting device according to any one of claims 42 to 45, wherein said cutting presser arms (63) are staggered from one another. 46. A connection device according to any one of claims 42 to 45, wherein the cutting press is arranged such that the clamp is pushed into the associated lead at an angle with respect to the lead axis for connection.