NL2002613C2 - CONNECTION CABLE WITH ELECTRIC CONDUCTORS AND PLUGS. - Google Patents

Description

Brief indication: Connection cable with electrical conductors and plugs

The invention relates to a connecting cable with a plurality of electrical conductors insulated from each other and with at least one plug, to which a plurality of contact elements are provided, which are connected to a cutting-clamping element (3, 4), which are connected over a claw (8) , 9) is slidable, as well as a corresponding plug.

Connection cables of the type described here are used, for example, for transferring audio and video data between individual devices in the entertainment electronics. This is in particular the so-called HDMI cable, where the abbreviation stands for "High Definition Multimedia Interface" and is a link developed from mid-2003 for the complete transfer of corresponding data in the entertainment electronics. Such cables were purposefully developed by the industry for the domain of privately used entertainment electronics, since more and more digital devices are being used therein and the usage content is now predominantly available in digitized form, for example on DVD, in the domain of DVB, Blueray ® etc. With a connection cable intended purely for digital data transmission, the otherwise unavoidable Digital-Analog and subsequent Analog-Digital conversions become superfluous.

With a conventional HDMI cable, a total of 19 electrical conductors are provided, which are connected to an as many contact elements at an HDMI plug (more specifically an HDMI bus, which is also understood as a plug in the context of this application). "). There are three TDMS (Transition Minimized Differential 2)

Signaling) data channels with three conductors for plus values, for minus values and a shield conductor. Furthermore, there are three more conductors which are correspondingly connected to contact elements for a clock signal, while the other conductors are intended for the transmission of control signals for communication between individual elements, for a low-voltage supply (with + 5V) etc.

Normally connecting cables with a length up to approximately 10 m are provided. Industrial prefabricated HDMI connection cables are thus made-up in various lengths.

With the known HDMI cables, the individual conductors are soldered together with the contact elements of the HDMI plugs, whereby this must normally be done manually and takes place in low-wage countries.

There is therefore the problem that HDMI cables are not available in any length. It is precisely in the domain of the High-20 end entertainment electronics that it is appreciated by many users to have connection cables of exactly matching length. On the one hand, this is considered optically pleasing. On the other hand, it is also achieved from a technical point of view that the cable length can be reduced to a minimum, whereby it can be observed that with increasing cable length the quality of the transmitted data may suffer. In particular, longer cables should also have better high-frequency properties to ensure error-free data transfer.

A further problem in the domain of the high-end entertainment electronics involves that such cables of 3 corresponding users then often have to be placed in hollow conductors. However, only cables without a plug can be pulled through such. The plugs must then be attached to the cable on site by a hollow conductor after the passage of a cable.

An object of the invention is thus to provide a corresponding connection cable, in particular for the HDMI domain, which can be supplied in an exactly suitable length. A further object may be that a connecting cable is provided, wherein the conductors of the cable can be connected to a plug in a simple manner, after the cable has been pulled through a hollow conductor, for example.

In order to make this possible, it is in particular provided that on the plug for the connecting cable the contact elements present on these are in each case connected to a cutting-clamping element. A mounting claw can be slid over each of these cutting clamp elements.

Such connections of plugs and cables are known in principle, for example in the field of the internal cabling of electronic equipment or circuits. Corresponding plug connections are connected with ribbon cables in it. This ribbon cable is placed between the plug and mounting claw and the mounting claw is then pressed onto the plug with a tool. At the same time, all the isolations of the individual electrical conductors are cut through by the cutting clamp elements and these cutting clamp elements come into electrically conductive connection with the electrically conductive cores of the conductor, so that a corresponding contact is established.

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In contrast to such conductors in a ribbon cable which are spatially adjacent by definition, the individual conductors in the connecting cable to be improved according to the invention are not spatially adjacent by definition. Rather, the individual electrical conductors within this connecting cable are usually even twisted together, so that their relative position with respect to each other is not identical and / or unambiguously determined at every location.

Furthermore, when the individual conductors protrude from their jointly surrounding insulation, the individual conductors can be movable relative to each other, so that a simple arrangement of a plurality of conductors side by side on a plurality of cutting clamp elements with subsequent sliding of a mounting claw over said plurality of cuts -15 clamping elements is not possible, since the guides for sliding the mounting claw cannot be fixed.

A further object of the invention is to ensure an exact arrangement of the spatially not necessarily adjacent conductors on a cutting clamp element.

This object is achieved according to the invention in that the mounting claw has at least one lateral inlet opening for a separately insulated electrical conductor.

This embodiment has the advantage that the inlet opening provided laterally on the mounting claw, which surrounds a separate conductor from all sides (ie both from the left and from the right, as well as from courts and from below), the individual conductor deflects unintentionally. fixation in particular in the lateral direction can be achieved and thus a precise mounting of the conductor in the cutting clamp element can be achieved.

With the device according to the invention there is the possibility that a plug can be attached to a connecting cable directly on site in a reliable manner. This could possibly also be done by a less technically skilled person. In particular, soldering operations should no longer be undertaken, as they have hitherto been necessary for the connection of, for example, a plug to an HDMI cable. Such solder connections are difficult to carry out. The risk of producing a so-called "cold solder weld" is also always present.

For people with less training, a corresponding 15 soldering can even take several hours.

In a further preferred embodiment of the invention, the mounting claw corresponds to at least two cutting clamp elements and the mounting claw has at least two lateral inlet openings, different in their dimensions, for two separate electrical conductors.

The lateral inlet openings can here for instance be distinguished in their diameter, each of these diameters corresponding to the diameter of a corresponding conductor.

Since there are conductors which have a larger conductive cross-section, for example the conductors intended for data transfer, as well as other conductors, for example the conductors provided for the invention, it can be ensured in this way that the appropriate conductors are also supplied to the correct contact elements .

Instead of respective diameters, it is also possible to provide said feed openings with distinct shapes, for example triangular, square or oval, and then to provide the corresponding conductors with a corresponding outer circumference.

In addition to a connecting cable provided with a corresponding plug 10, a corresponding plug is also the subject of the present invention. In the context of the invention, a plug is also understood to mean a socket which may optionally also be fitted to a device to be connected.

Further advantages and features of the invention follow from the following description of an exemplary embodiment. It shows:

Figure 1 is a top view of an inner part of an HDMI plug comprising the contact elements of a plug; Figure 2 is a view of a component according to Figure 1 in the direction of II in Figure 1;

Figures 3 and 4 are a side view of a component according to Figure 1 slidable over a mounting claw;

Figure 5 is a top view of a mounting claw according to Figure 3; Figure 6 shows a bottom view of a mounting claw according to Figure 4;

Figure 7 is a top view of a mounting claw according to Figure 3 with laterally inserted conductors of a connecting cable;

Figures 8a and 8b are a schematic drawing for explaining the function of the cutting clamp technique used with the plug; 7

Figure 9 shows a top view of a connecting cable assembled at one end with connected inner part of a plug 5 Figure 1 shows the top view of the inner part of an HDMI plug with a plug-in part and a connecting part 2. The plug-in part becomes a ready HDMI plug into a corresponding HDMI socket. In this case, contact elements arranged in the interior of the insertion member with corresponding contact elements of the socket come into electrically conductive connection.

Each individual contact element in the insertion part 1 is assigned to the connection part 2 a cutting clamping element, which are alternately angled relative to each other with slight offset, so that the cutting clamping elements lie in two rows.

Figure 2 shows the cutting clamp elements 3, 4 in a view of the plug inner part of Figure 1, shown in a view in the direction II in Figure 1. A total of 19 corresponding cutting clamp elements are provided, which partly are directed upwards and partly downwards.

Such cutting clamp elements are shown in more detail in figures 8a and 8b. It can be seen that a cutting clamp element has a substantially V-shaped cut. An electrical conductor 6 is pressed into it, wherein the insulation surrounding it in the form of a hose is cut open by the V-shaped cut 5.

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The cutter-clamping element thereby comes into metallic contact with the conductor 6 by means of the V-shaped cuts 5, as shown in Figure 8b. The electrical conductor 6 is further surrounded by the insulation 7 in the axial direction along with the cutting-clamping element.

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In order to introduce the conductor 6 with its insulation precisely into the V-shaped cut 5, mounting claws formed according to the invention are provided, as shown in Figures 3 and 4. These mounting claws have lateral inlet openings 9,10 into which the corresponding conductors are inserted with their insulation in the axial direction. It is also within the scope of the invention to introduce insulated conductors into the input openings of the mounting jaws and then connect them to cutting clamp elements.

However, the additional act of removing insulation can be omitted on the basis of the technique used, since this does not lead to a better connection result.

Moreover, it should be mentioned here that the conductors for insertion into the input openings lie bundled in a cable and are also shielded separately in several groups in this cable. The individual conductors are thus not fixed in a rigid position relative to each other.

By introducing the individual conductors into the input openings 9, 10 of the mounting claws 8, these cables are brought into a mutually fixed position within the range of the mounting claws 8. The input openings 9, 10 completely surround the input conductors, so that the conductors can no longer change their position within the assembly claw 30 during a subsequent treatment of the mounting claw.

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By pressing the mounting claw 8 onto the connecting part 2, the conductors then inserted into the feed openings 9, 10 and pressed there are precisely pressed into the V-shaped cuts of the cutting clamp elements 3, 4 and connected to these,

In this case, the cutting clamp elements 3, 4 offset relative to each other intervene on the feed gaps 11, 12 provided for them facing downwardly and at the top of the cutting claw 8, which also serve to cut the clamping elements during the cutting course. to stabilize.

Now it is also the case that, as for example in a conventional HDMI cable predetermined positions of contact elements, certain functions are assigned. For example, individual contact elements according to the standard for data transfer are needed, while other contact elements according to the standard serve for grounding and / or shielding.

The conductors assigned to the individual contact elements accordingly have respective conductive cross-sections. In order to be able to ensure that the conductor with a large cross-section is assigned the contact element which is correct according to the standard, the inlet openings 9, 10 have respective dimensions. In the example shown here, these have different diameters. This makes it easier to guide conductors, such as those required for earthing / shielding, which have a small diameter, to the correct contact elements, and in the same way the thick diameter conductors serving data transfer will only enter the input openings 10 with a large diameter, which are connected over the cutting tongues 3, 4 to the contact elements intended for data transmission.

Figure 7 shows how several electrically insulated conductors 6 have been passed through the input openings of a mounting claw 8. These conductors together form a cable 11, wherein individual conductor groups are separately shielded by a foil screen 12 extending in the cable. This foil screen 12 is fed until shortly before the mounting claw and ends there such that the individual conductors 6 extending within this foil screen cannot come into contact with each other. The mounting claw 8 provided with conductors passed through their inlet openings shown in Figure 7 is then slid onto the connecting part 2 of a plug inner part shown in Figure 1, so that the constellation 15 shown in Figure 9 is achieved. This constellation is then integrated once again into a plug housing not shown here.

In a further embodiment, not shown here, the mounting claw is integrated in a plug housing in construction. By means of a corresponding one-piece mounting claw and plug housing, any tool costs can be saved and, moreover, a ready-to-use connecting cable is a little faster and easier to manufacture.

Since the here described connection of a plug to a connecting cable can be done without soldering and essentially requires only the removal of insulation from a cable and possibly conductor bundles or conductors located in these, the provision of a plug on a connecting cable can possibly also be effected by only a 30 experienced seemed to happen. This creates the possibility of precisely adjusting 11 cables in an installation of several components to the required length or, on the other hand, of plugging cables into a hollow conductor, which must be made without a plug, after their introduction.

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Claims (5)

A connecting cable (11) with a plurality of insulated electrical conductors (6) and with at least one plug (1), to which a plurality of contact elements are provided, which are connected to a cutting clamp element (3, 4) over which a mounting claw (8, 9) is slidable, characterized in that the mounting claw (8, 9) has a lateral inlet opening (9, 10) for an insulated electrical conductor (6). Connection cable according to claim 1, characterized in that the mounting claw (8) corresponds to at least two cutting clamp elements (3, 4.) and has at least two lateral inlet openings (9, 10) that differ in their dimensions. 3. Connection cable according to claim 2, characterized in that the inlet openings (9, 10) have different diameters and at least two conductors (6) with different diameters are available. 4. Connecting cable as claimed in claim 2, characterized in that the input openings have a different shape and that the at least two conductors with respective outer circumference are available which correspond to the respective shapes. 5. Plug for a connecting cable according to any one of the preceding claims.