DK200900054U3 - Connection cable with electrical conductors and plug - Google Patents

Description

DK 2009 00054 U3

The present invention relates to a connecting cable having several mutually insulated electrical conductors and having at least one plug, thereby providing a large number of contact elements which are connected to a clamping element over which a mounting jaw can be inserted and an associated plug.

Connection cables of the kind described above are used, for example, for the transfer of audio and video data between individual devices in entertainment electronics. This is in particular a so-called HDMI cable, where the abbreviation stands for "High Definition Multimedia Interface", and since mid-2003 developed interface for the fully digitized transmission of associated data in entertainment electronics

These cables were developed by the industry targeted to the area of privately used entertainment electronics, where more and more digital devices are being used and where the utility content is currently predominantly in digitized form, such as DVD, in the DVB area, Blu-ray®, etc. With a connection cable provided to a pure digital data transfer, the otherwise inevitable digital-analogue and associated analog-digital conversions become superfluous.

In a standard HDMI cable, there are a total of 19 electrical conductors that must be inserted into an HDMi socket (or an HDMI socket, which, within the scope of this application, should be perceived as a "socket") for similarly many contact elements ( in English "pins"). Thereby three TMDS (Transition Minimized Differential Signaling) data channels are provided with three wires every ten! plus values and to minus values as well as a screen manager. Furthermore, there are three additional conductors which are similarly connected to contact elements for setting the beat, while the remaining conductors are provided for transmitting control signals for communication with the individual elements for a low voltage power supply (with +5 V) etc.

According to the norm, connecting cables with a length of approx. Thus, industrially manufactured HDMI connection cables are offered prefabricated in various lengths,

With the known HDMI cables, the individual conductors are soldered to contact elements in the HDMI connector, which is usually done manually and performed in low-wage countries.

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This causes the problem that HDMI cables are not available in optional lengths. Precisely in the area of exclusive entertainment electronics, many consumers emphasize that the connecting cable has a precisely matched length, and partly this is perceived as optically appealing. Secondly, from a technical point of view, the cable lengths can also be reduced to a minimum, taking into account that the quality of the transmitted data may suffer as the cable length increases. In particular, longer cables should also exhibit better high-frequency characteristics to ensure flawless data transfer.

Another problem in the area of exclusive entertainment electronics lies in the fact that the affected consumers will often place such cables in installation pipes. However, through these pipes, only cables without plugs can be pulled. The plugs must then be mounted on the cable after its passage through an installation tube.

Thus, it is an object of the invention to provide a connecting cable, in particular to the HDMI range, which can be offered at an exactly matched length. It is yet another object to provide a connecting cable whereby the conductors of the cable can be connected to a plug in a simple manner after, for example, the cable is drawn through an installation pipe.

In order to make this possible, in particular, in the connector of the connecting cable, it is ensured that each of the contact elements contained in this cable is connected to a cutting clamping element. A mounting jaw can be inserted into each of these cutting clamp elements.

Basically, such connections of connectors to cables are known, for example in the area of internal cabling in electronic devices, or component groups, respectively. As a result, plug connectors are connected to flat ribbon cables. These flat ribbon cables are laid between the plug and a mounting jaw, and the mounting jaw is then pressed onto the plug with the aid of a tool. Thereby, all insulations on the individual electrical conductors are cut at the same time by the cutting-clamping elements, and these cutting-clamping elements are thereby brought into electrically conductive connection with the electrically conducting cores in the conductors, so that good contact is provided.

Unlike these conductors in a flat ribbon cable which are spatially defined relative to each other, the individual conductors in the improved connectors according to the invention are not spatially defined mutually, on the contrary, the individual electrical conductors in these connectors are usually distorted in relation to each other. to each other, so that their relative position relative to each other is not identically and / or uniquely defined at any location.

Furthermore, as they protrude from their common enclosing insulation, the individual conductors can be moved relative to one another, so that a simple laying of multiple conductors side by side on multiple cutting clamp elements with a subsequent insertion of a mounting jaw onto these clamp elements does not will be possible since the leads cannot be fixed securely prior to insertion of the mounting jaw.

A further object of the invention is to ensure the exact placement of the non-spatially defined conductors on a cutting clamping element.

This object is solved according to the invention in that the mounting jaw has at least one side insertion opening and a single insulated electrical conductor.

This embodiment has the advantage that the side insertion opening provided on the mounting jaw, which surrounds a single electrical conductor on all sides (i.e. both from the left and from the right and also from above and from below), can fix the individual conductor against accidental displacement , in particular in the direction of the side, thus allowing for precise mounting of the conductor on the cutting clamping element

Thus, with the device according to the invention, there is the possibility that a plug can also be attached directly to the connection cable in a function-safe manner. This may also be done by a technically less experienced person. In particular, no more soldering work is needed, which has so far been necessary for connecting a plug, for example to an HDMI connection cable. These solder connections are very difficult to carry out Also, there is always the risk of creating so-called "koi solder *.

For less experienced people, such soldering can even take several hours.

In a further preferred embodiment of the invention, the mounting jaw matches at least two cutting clamping elements, and the mounting jaw has at least two substantially different side feed openings for two separate electrical conductors.

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For example, the side feed openings may differ t in diameter, each diameter corresponding to the diameter of an associated conductor

Consequently, since there are conductors that have a larger cross-section, such as the data transfer conductors, as well as other conductors, such as the grounding conductors, it can also be ensured that the proper conductors are passed to the correct contact elements.

Instead of different diameters, it is also possible that the insertion openings are made in different shapes, for example triangular, square or oval, and the corresponding conductors may also have similar outer contours. In addition to a connection cabinet provided with an associated connector, the specific connector will also be the subject of the present invention. Hereby, as a plug within the scope of this generation, a socket, which may also be placed in an apparatus to be connected, must also be perceived,

Further advantages and features of the invention will become apparent from the following description of an embodiment, in which:

Figure 1 is a plan view of an inner component containing the contact elements of an HDMI connector;

Figure 2 is a plan view of the component of Figure 1 seen in direction II of Figure 1;

Figures 3 and 4 are a side view of mounting jaws slidable over the component of Figure 1;

Figure 5 is a plan view of a mounting jaw according to Figure 3;

Figure 6 is a bottom view of a mounting jaw according to Figure 4;

Figure 7 is a plan view of a mounting jaw according to Figure 3 with laterally inserted conductors in a connecting cable;

Figures 8a and 8b show a principle sketch for illustrating the function of the cutting-clamp technique used for the plug; and

Figure 9 is a plan view of the end of a pre-configured junction box! with a connected inner part of a plug,

Figure 1 shows a view of the inner part of an HDMI connector with a insertion part 1 and a connection part 2. With the insertion part, a finished HDMI plug is inserted into an associated HDMI socket, thereby providing contact elements which are arranged in the interior of 5 DK. 2009 00054 U3 insertion dough, in electrically conductive connection with corresponding contact elements in the bushing.

Each contact element of the insertion member 1 is attached to the connecting member 2 to a cutting clamping element 3, 4 which is arranged alternately with slight displacement / angling relative to each other, so that the cutting clamping elements lie in two rows.

In Figure 2, the cutting clamping elements 3, 4 shown in a plan view of the connector part of Figure 1 are shown in a plan view seen in direction II in Figure 1.

It can be seen that a total of 19 identical cutting clamping elements are provided, which are directed upwards and downwards partly.

The cutting clamping elements are shown in detail in Figures 8a and 8b. A cutting clamping element has a substantially V-shaped insert 5. In this, an electrical conductor is depressed, whereby the insulation of the conductor as a hose is cut by the V-shaped insert 5.

The cutting clamping element will thereby, by virtue of the V-shaped inserts 5, come into metallic conductive contact with the conductor 6, as shown in Figure 8b. In the axial direction adjacent the cutting clamping element, the electrical conductor 6 is still surrounded by the insulation 7. To insert the conductor 6 with its insulation precisely into the V-shaped insert 5, mounting jaws 8 are formed according to the manufacture, as can be seen in Figure 3. and 4, These mounting jaws have side insertion openings 9, 10 in which the associated wires with their insulation are inserted in axial direction. Of course, also within the scope of the production, insulated conductor ends can be inserted into the insertion openings of the mounting jaws, whereby these are connected to the cutting clamping elements. However, due to the technique used, the additional working step of stripping can be omitted because it does not lead to better connection result.

It should only be mentioned in passing that the conductors are bundled in a cable before insertion into the insertion openings and in this cable are also separately shielded in several groups. Thus, the individual managers are not fixed together in a fixed position.

By inserting the individual conductors into the insertion openings 9, 10 in the mounting jaws 8, these conductors are brought into a mutually fixed position in the area of the mounting jaws 6, The insertion openings 9,10 surround the inserted conductors all the way around, so that the leaders in a subsequent action with the mounting jaws can no longer change their position within the mounting jaws.

After compression of the mounting jaws 8 into the connection part 2, the conductors inserted and inserted therein in the insertion openings 9, 10 are precisely pressed into the V-shaped inserts in the cutting clamping elements 3, 4 and connected therewith.

Thereby, the mutually displaced cutting clamping elements 3, 4 engage guide slots 11, 12 on the lower or upper side facing them of the cutting trays 8, which slots also serve to stabilize the cutting clamping elements during a cutting process.

Furthermore, in a regular HDMI cable, certain functions are still associated with predetermined positions in the contact elements. For example, some contact elements are required for data transfers according to the norm, while other contact elements according to the norm serve for earthing and / or shielding.

Consequently, the conductors belonging to the individual contact element have different conductive cross sections In order to be able to ensure that the conductors of large cross section are connected to a correct contact element according to the norm, the insertion openings 9, 10 have different dimensions. In the example shown, the different diameters have . This makes it easier for conductors required, for example, for small-diameter grounding / shielding, to be brought into the correct contact elements, and in the same way that the conductors of a thicker cross section fit exclusively in the entry openings 10 with large diameters which are connected through the cutting tongues 3, 4 to the contact elements intended for data transfer.

In addition to different diameters, it is also possible to provide insertion openings having a square, oval or also star-shaped shape, which is only suitable for conductors with a corresponding outer contour. Figure 7 shows how several electrically insulated conductors 8 are inserted through the insertion openings in a mounting jaw 8 These conductors jointly form a cable 11, whereby the individual conductors are separately shielded in groups through a film screen 12 running in the cable. This film screen is advanced shortly before the mounting jaw 8, 7 DK 2009 00054 U3 and it ends in such a way that the individual conductors 6 within this film screen cannot come into contact with each other. The mounting jaw 8 shown in Figure 7 with conductors inserted through the insertion openings therein is then inserted into the connector portion 2 of a connector portion shown in Figure 1 so that the constellation shown in Figure 9 is obtained. This constellation is then further integrated into a connector housing not shown here.

In a further embodiment, not shown, the mounting jaw is integrated as a component in a connector housing. By appropriately manufacturing the mounting jaws and plug housing in one 10 piece, tool costs are saved, and, furthermore, a finished connection cable is made even faster and easier.

Thus, because the connection of a connector to a connecting cable described herein can be made without soldering, and essentially requires only the isolation of a cable and optionally a cable bundle or conductors lying therein, the application of a connector to a connecting cable may also be possible. are made by less experienced people. This gives the possibility that cables within a system of several components can be precisely matched to the individual required lengths, or cables can, after insertion into an installation pipe which must be made without plugs, be provided with a plug.

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Claims (5)

8 DK 2009 00054 U3 1, Connection cable (11) with a plurality of insulated electrical conductors (6) and with at least one connector (1) to which a plurality of contact elements provided with a cutting clamp element (3, 4) is provided, above which a mounting jaw (8, 9) can be inserted, which is new in that the mounting jaw (8, 9) is provided with a side insertion opening (9,10) for an electrically insulated conductor (6). 2, Connection cable according to claim 1, which is new in that the mounting jaw (8) fits 10 with at least two cutting clamping elements (3, 4) and has at least two dimensionally different side insertion openings (9, 10). Connection cable according to claim 2, which is new in that the insertion openings (9, 10) have different diameters and that there are at least two conductors (6) with different diameters. 15 Connection cable according to claim 2, which is new in that the insertion openings are differently shaped and that there are at least two conductors with different outer contours that correspond to the different shapes. Connector to a connecting cable according to one or more of the preceding claims.