DE102018130746A1 - Current bridge and method for forming a current bridge - Google Patents

Abstract

The invention relates to a current conductor bridge with a current conductor, a connecting element and a number of screws, the screws being fastened to the connecting element and being electrically connected to the latter, and at least one screw producing an electrically conductive connection between the screw and the current conductor.

Description

The invention relates to a current conductor bridge and a method for forming a current conductor bridge.

Conductor bridges are often used in applications in which a reliable electrically conductive connection with high current carrying capacity is important. If a current conductor bridge has already been incorrectly installed during assembly or can no longer reliably provide the electrical contact due to a malfunction, this can lead to considerable problems. In the application example of a grounding connector, such an error can remain undetected for a long time, it only being noticed in the case of a critical condition, such as a short circuit, that the desired current carrying capacity is not available at all.

It is therefore an object of the present invention to provide a current conductor bridge which is designed as an alternative to known designs. It is also an object of the invention to provide a method for forming such a current conductor bridge.

According to the invention, this is achieved by a current conductor bridge and a method according to the respective main claims. Advantageous refinements can be found, for example, in the respective subclaims.

The invention relates to a current conductor bridge. The current conductor bridge has a current conductor, a connecting element and a number of screws. The screws are fastened to the connecting element and connected to it in an electrically conductive manner. At least one screw penetrates into the current conductor at its end facing the current conductor, forming an electrically conductive connection between the screw and the current conductor.

The current conductor bridge according to the invention can be used to produce a particularly reliable and permanent electrically conductive connection between the current conductor and the connecting element. A loosening or damage to the electrical connection is prevented by the penetration of the screw into the current conductor. In addition, such a connection is easy to establish and reliably controllable.

The design described ensures in particular that an electrically conductive connection is made from the current conductor to the connecting element. This is typically done using the screws already mentioned.

Each screw preferably penetrates into the current conductor at its end facing the current conductor, forming an electrically conductive connection between the screw and the current conductor. However, only a part of the screws can be processed so that they actually penetrate the conductor.

Any number can be used with regard to the number of screws, for example one screw, two screws, three screws or even more than three screws.

The current conductor can be designed, for example, as a rod or cable or as a strand. For example, it can have a compact cross section. The cross-section can be round, for example, but it can also be flattened or almost or completely square, square or polygonal. The current conductor is preferably made of conductive metal or a conductive metal alloy. A conductive design is understood to mean in particular an electrically conductive design.

The screws penetrating into the current conductor preferably penetrate through a surface layer of the current conductor into a core material of the current conductor. This can take into account in particular the fact that current conductors are at least partially delivered with an oxide or scale layer on the surface due to the manufacturing process. Such layers have a significantly poorer electrical resistance than pure metal. Accordingly, it can be advantageous to penetrate such layers and to enable a low-resistance connection in the core of the material. However, the respective layer can also be useful at the same time, since it passivates the current conductor to the outside and protects it against unwanted contacts.

The screws preferably have at their ends facing the current conductor a section which tapers towards the current conductor. The respective screw can thus advantageously penetrate into the current conductor, an increased force being able to be applied locally. For example, an outer layer on the conductor can be broken through.

The sections tapering towards the current conductor can, for example, be conical, pointed, frustoconical or pyramid-shaped. Such designs have proven themselves for typical applications. The tapered sections can be the same for all screws used, but they can also be designed differently.

The screws are preferably received in a respective transverse bore of the connecting element with an internal thread complementary to an external thread of the screw. An advantageous fastening of the screws to the connecting element can thereby be achieved. The screws typically have a longitudinal direction which is oriented transversely to the current conductor. Accordingly, they are typically also screwed in in a direction transverse to the current conductor or to a longitudinal direction of the current conductor.

According to one embodiment, all transverse bores are arranged along a line which runs parallel to a longitudinal axis of the connecting element.

According to one embodiment, a part of the transverse bores are arranged along a line which runs parallel to the longitudinal axis, and a part of the transverse bores is arranged circumferentially offset thereto. With this design, the transverse bores can be provided at different radial positions, which can be advantageous, for example, for certain mounting situations.

The current conductor can be, for example, a rod, a steel rod, a structural steel rod, a ribbed steel rod, a cable or a strand. Such designs have proven themselves for typical applications.

In general, it should be mentioned that the current conductor can have, for example, a compact, round or even flattened or almost or completely angular, for example square or polygonal, cross section. The current conductor can be formed, for example, from conductive metal or from a conductive metal alloy.

The current conductor can have a number of projections, for example. This can correspond, for example, to training as a concrete ribbed bar.

According to an advantageous embodiment, the connecting element is designed to receive a respective current conductor both at a first longitudinal end and at a second longitudinal end, and further preferably has respective transverse bores for screwing in the screws on at least one of the two longitudinal ends. It can also have respective transverse bores at both longitudinal ends for screwing in the screws. As a result, the connecting element can be designed to connect two current conductors to one another and to achieve the advantages already mentioned at the beginning.

The connecting element can in particular be designed as a double connector. This can be done, for example, in the manner just described, that is, by training to accommodate two current conductors at respective longitudinal ends.

An end or center stop is preferably arranged as a position control for the current conductors to be accommodated in a bore of the connecting element between or behind the longitudinal ends. It can thereby be achieved that the respective current conductors can only be pushed as far as the respective end or center stop and in this way it can also be checked whether they have been pushed in sufficiently far, for example up to the stop.

For example, a deeply screwed screw can be used as a stop. In this case, a head of the screw can remain on it, for example, which serves for visual control. In this case, however, it may be that the conductors may not be fully in contact. It is also possible to insert a respective current conductor in the correct position and then screw in screws, for example as an end or center stop. The last screw without contact can then be screwed in deeper, for example, whereby a head of the screw can tear off. This will be discussed in more detail below. A stub of this screw then sits optically lower than the others and thus the position can be reliably checked.

The connecting element can be designed, for example, as a plate connector or plate press sleeve. For this purpose, for example, a plate can be attached at the end, in particular opposite to a receptacle for the current conductor. Such a design as a plate connector can be advantageous, for example, for connecting cable lugs, it being possible for example for a connecting tube of the plate connector to be provided with an internally threaded bore. This connecting tube can, for example, be identical to that which receives the respective current conductor.

To form a plate connector, the connecting element can have, for example, a disc lying transversely to the longitudinal axis of the connecting element at one longitudinal end. Other objects such as cable lugs can be attached to this, for example.

According to one embodiment, the connecting element can also be designed as a block connector. To form a block connector, the connecting element can have a section at one longitudinal end with a larger diameter than the rest of the connecting element exhibit. To form a block connector, the connecting element can have, for example, an integrally formed, widened, for example cylindrical end or other solidly shaped block. This can have a bore and an internal thread, for example. It can thus offer a sufficiently large contact surface for a cable lug. This can be followed by a connector. For example, a receptacle for the current conductor can be provided at a longitudinal end opposite the block or the section with a larger diameter. There can also be holes for the screws. Steel conductors, for example, can also be welded to the solid block or to the section with a larger diameter.

The connecting element can, for example, take up a rigid current conductor in one end and take up a cable at the other end, which ends in a further connecting element such as a plate press sleeve with a plate or a welding tab with a flat end or cable lug with an eyelet or another press connector or block connector . As a result, a connection solution which is advantageous in numerous situations can be achieved, in which, for example, the current conductor is connected using the connecting element and the cable, which can be arranged at a clear distance from the current conductor and can also be arranged flexibly.

The connecting element can have, for example, a weld-on tab. Such a welding tab allows a wide variety of elements such as cables or other electrical connecting means to be welded on in a simple and flexible manner.

The connecting element can, for example, have a cable lug with an eyelet formed therein. The cable lug can also be designed without an eyelet formed therein. By means of such a cable lug, for example, a cable or a stranded wire can simply be connected and an electrical connection to the current conductor can thus be established.

The connecting element can be connected to a cable at one longitudinal end. This enables a direct electrical connection to be made to the cable.

The cable can be received in a sleeve at its longitudinal end opposite the connecting element. With this sleeve, the cable can in turn be electrically connected to other components.

The cable can also be connected to a welding tab at its end opposite the connecting element.

This can in particular be flat. For example, other electrical components can be welded to such a weld-on lug and thereby electrically connected in a simple and flexible manner.

The cable can be connected to a cable lug at its longitudinal end opposite the connecting element. In particular, an eyelet can be formed in this. Such a cable lug can be used to establish a direct electrical connection to a cable or a strand.

The cable can be connected to a further connecting element at its longitudinal end opposite the connecting element. This enables a connection to be established between two connecting elements. Each connecting element is typically designed to be electrically connected to a respective current conductor. Due to the embodiment just described with a cable that electrically connects two connecting elements, a connection between the two current conductors can also be established in this way.

The connecting element can be connected to a further current conductor at a longitudinal end opposite the current conductor. For example, the connecting element can be designed as a double connector, as already described above. With such an embodiment, an electrical connection between two current conductors can be established by means of the connecting element without additional components apart from the screws being required for this.

The current conductor bridge can be, for example, an earth connector. Such a device can be used, for example, in an earth connection, which is typically used to provide a defined potential as ground and, for example, to temporarily derive a high current in the event of a short circuit or another malfunction.

The current conductor bridge can, for example, form a high-current connection. Such a high-current connection is understood to mean, in particular, a connection which is capable of absorbing high electrical currents for a short time or even for a long time without showing excessive heat development, in particular without deforming due to the heat.

The current conductor bridge can have a current carrying capacity of at least 20,000 A, for example. The current conductor bridge more preferably has a current carrying capacity of at least 40,000 A. Such current carrying capacities have proven to be advantageous for typical applications.

A current carrying capacity can in particular be understood as a current which can flow in a period of 0.1 s to 1 s and in which case a temperature increase caused by the current remains below 260 K. Typical currents can be between 25,000 A and 45,000 A, for example.

The current conductor bridge can, for example, have a resistance of less than 50 μΩ or less than 200 μΩ. Such resistors have proven to be advantageous for typical applications. A resistance between 1 μΩ and 50 μΩ can also be provided for particularly resistance-sensitive applications. It has been shown that by designing the current conductor bridge according to the invention, such resistances can be achieved even with a robust design that is resistant to high currents.

According to an advantageous embodiment, the screws are tear-off screws. This can apply to all screws or only to a part of the screws used. The screws can also be threaded parts of tear-off screws after a respective head has been torn off. Such threaded parts can also be referred to as stubs. The screws can thus in particular be stubs of tear-off screws. In particular, this can mean that during a manufacturing process the screws initially had a head, which, however, was torn off during the manufacturing process.

The use of tear-off screws can in particular ensure that they are screwed in to a certain torque and that the respective head tears off when a certain torque is reached.

• - Einführen des Stromleiters in das Verbindungselement,
• - Eindrehen einer Anzahl von Schrauben in eine Anzahl von Querbohrungen, welche in dem Verbindungselement ausgebildet sind, wobei eine elektrisch leitende Verbindung zwischen einer jeweiligen Schraube und dem Verbindungselement ausgebildet wird,
• - Drehen jeder der Schrauben, so dass mindestens eine der Schrauben den Stromleiter kontaktiert und unter Eindringen in den Stromleiter eine elektrisch leitende Verbindung zwischen Stromleiter und Schraube ausbildet.

The invention further relates to a method for forming a current bridge with an electrically conductive connection between a current conductor and at least one connecting element. The process has the following steps:

• Inserting the current conductor into the connecting element,
• Screwing in a number of screws into a number of transverse bores which are formed in the connecting element, an electrically conductive connection being formed between a respective screw and the connecting element,
• - Turn each of the screws so that at least one of the screws contacts the current conductor and forms an electrically conductive connection between current conductor and screw when penetrating into the current conductor.

By means of a method according to the invention, an electrically conductive connection can advantageously be established by means of a current bridge. The screws can typically be screwed in so far that they penetrate the current conductor as already described above and thereby establish a reliable and permanent connection. The penetration also results in a flat connection which is less susceptible to corrosion.

Each screw preferably contacts the current conductor and forms an electrically conductive connection between current conductor and screw when penetrating into the current conductor. Alternatively, however, only a part of the screws used can contact the current conductor and thereby form an electrical connection.

At least one, preferably each screw preferably has, at its end facing the current conductor, a section which tapers towards the current conductor. As already explained above, this allows a selective pressure to be built up, which can, for example, facilitate the penetration of an outer layer of the current conductor.

A tapered section can in principle be deformed, it being particularly important in the presence of a non-current-conducting layer on the current conductor to penetrate the surface or the layer of the current conductor and to connect it in a pointed manner internally without any significant resistance. Therefore, the screw or its tip or tapered section will typically deform only slightly.

Before the current conductor is inserted into the connecting element, the method preferably comprises screwing in a positioning screw through a transverse bore in the connecting element. In this case, the current conductor is preferably pushed into the connecting element until it adjoins the position screw.

A later position control of the current conductor in the connecting element is preferably made possible due to the fact that the screws can be screwed in at different depths. For example, screws can be used, which are the same are long or their respective stubs are the same length after the head is torn off. The screw depth of different depths can then be ensured, for example, by a height variation in the current conductor. Alternatively, for example, screws of different lengths or screws with stubs of different lengths can also be used.

The remnants or stubs of the torn-off screws which protrude at different distances preferably enable a subsequent position control of the current conductor in the connecting element. For example, the position controls mentioned can be the end or center stops already mentioned above. In this regard, reference is made to the above. It is particularly advantageous that it can be seen from a simple glance whether the current conductor has been inserted correctly and whether it is in its correct position.

The penetration preferably results in an electrical connection that is as resistant as possible. In this regard, reference is made, for example, to the explanations given above regarding current carrying capacity and resistance. In particular, an electrical connection with as little resistance as possible can be formed if an insulating layer on the current conductor, if there is one, is pierced by the respective screw and then the interior of the current conductor is contacted.

The screws are preferably rotated to penetrate to a predetermined torque. A certain amount of penetration can thereby be ensured, but at the same time an overuse of the material can be prevented.

The predetermined torque can preferably be set for a respective screw in that the respective screw has a head which is connected to the rest of the screw in such a way that it breaks off when the predetermined torque is reached. This makes it easy to specify up to which torque the respective screw should be screwed in. In particular, this can already be specified by the manufacturer of the screw or the power connector, so that sources of error, such as incorrectly set or incorrectly used torque wrenches, are prevented.

The tear-off head can be connected to the rest of the screw via a predetermined breaking point. In this way, for example, the already mentioned torque at which the head which can be torn off tears off can be predetermined. A predetermined breaking point can be, for example, a point with a locally smaller radius.

The screws are preferably designed as tear-off screws. This allows, for example, the already mentioned adjustability of the maximum torque to be achieved in a simple manner.

The screws are preferably designed to be rotated up to a predetermined torque and then to remain in the connecting element with their threaded portion while tearing off a respective head of the screw. In this way, for example, the torque limitation already mentioned above can be implemented in an advantageous manner.

The tear-off screws can ensure, for example, an undetachable, non-manipulable, optically perceptible and / or controllable electrically conductive connection. In particular, it can be checked with a simple glance whether the heads have been torn off. In this case, it can be assumed with a high degree of certainty that the screws have been screwed in with the required or desired torque and have therefore also produced an electrically conductive connection in the desired manner.

Alternatively, it should be mentioned that the predetermined torque can also be set using a torque wrench.

A depth of penetration of the screw into the current conductor is preferably correlated with the predetermined torque. This enables a defined electrical connection to be established.

A current conductor bridge is preferably formed by means of the method. In particular, this can be a current conductor bridge according to the invention. All versions and variants described here can be used.

According to an advantageous embodiment, with the aid of and combination of several of the elements of the current conductor bridge, partial current bridges are pre-assembled in one work step before the final assembly such that the connection of more than two current conductors can be carried out by connecting elements with tear-off screws alone. This allows the workflow on a construction site to be considerably simplified and carried out more safely.

The invention further relates to the use of a number of screws to form a current conductor bridge between a current conductor and a connecting element, in particular according to a current conductor bridge according to the invention. All of the designs and variants described here can be used.

In this context, it is particularly pointed out that all of the features and properties described in relation to the device, but also procedures, are analogously also applicable with regard to the formulation of the method according to the invention and can be used in the sense of the invention and are also disclosed. The same also applies in the opposite direction, which means that only features that are mentioned in relation to the method, that is to say structural features according to the device, can also be taken into account and claimed within the scope of the device claims and also count towards the disclosure.

• 1: eine Stromleiterbrücke,
• 2: einen Querschnitt durch eine Stromleiterbrücke,
• 3: eine Stromleiterbrücke während eines Herstellungsverfahrens,
• 4: eine alternative Ausführung einer Stromleiterbrücke,
• 5: einen Querschnitt durch eine Stromleiterbrücke gemäß einer alternativen Ausführung,
• 6: ein Verbindungselement,
• 7: ein Verbindungselement als Doppelverbinder,
• 8: ein Verbindungselement als Tellerverbinder,
• 9: ein Verbindungselement als Blockverbinder,
• 10: eine Stromleiterbrücke mit angeschlossenem Kabel,
• 11: eine Stromleiterbrücke mit angeschlossenem Kabel gemäß einer alternativen Ausführung,
• 12: eine Stromleiterbrücke mit angeschlossenem Kabel gemäß einer nochmals alternativen Ausführung,
• 13: eine Stromleiterbrücke mit angeschlossenem Kabel gemäß einer nochmals alternativen Ausführung,
• 14: eine Stromleiterbrücke als Doppelverbinder,
• 15: eine weitere Stromleiterbrücke als Doppelverbinder,
• 16: eine Stromleiterbrücke mit Blockverbinder,
• 17: die Stromleiterbrücke von 16 in einer anderen Ansicht,
• 18: eine Stromleiterbrücke als Tellerverbinder,
• 19: eine Stromleiterbrücke als Doppelverbinder,
• 20: einen Stromleiter,
• 21: ein Kabel,
• 22: einen Kabelschuh,
• 23: eine Anschweißlasche,
• 24: einen Tellerverbinder,
• 25: eine Anordnung aus mehreren Stromleiterbrücken, welche miteinander verbunden sind, und
• 26: drei Stromleiterbrücken, welche miteinander verbunden sind.

In the drawing, the invention is shown schematically in particular in exemplary embodiments. Show it:

• 1 : a current conductor bridge,
• 2nd : a cross section through a current conductor bridge,
• 3rd : a current conductor bridge during a manufacturing process,
• 4th : an alternative version of a current conductor bridge,
• 5 a cross section through a current conductor bridge according to an alternative embodiment,
• 6 : a connecting element,
• 7 : a connecting element as a double connector,
• 8th : a connecting element as a plate connector,
• 9 : a connecting element as a block connector,
• 10th : a current conductor bridge with connected cable,
• 11 : a current conductor bridge with connected cable according to an alternative embodiment,
• 12 : a current conductor bridge with connected cable according to another alternative design,
• 13 : a current conductor bridge with connected cable according to another alternative design,
• 14 : a current conductor bridge as a double connector,
• 15 : another current conductor bridge as a double connector,
• 16 : a current conductor bridge with block connector,
• 17th : the current conductor bridge from 16 in another view
• 18th : a current conductor bridge as a plate connector,
• 19th : a current conductor bridge as a double connector,
• 20th : a conductor,
• 21st : a cable,
• 22 : a cable lug,
• 23 : a welding tab,
• 24th : a plate connector,
• 25th : an arrangement of several current conductor bridges, which are connected to each other, and
• 26 : three current conductor bridges, which are connected to each other.

1 shows a conductor bridge 10th according to an embodiment of the invention.

The current conductor bridge 10th has a conductor 20th on. This is designed as a concrete ribbed bar and therefore carries a plurality of projections on its outside 22 . The current conductor can be formed, for example, from steel, copper, aluminum, brass, zinc or an alloy made of or with these components. The conductor 20th is also coated with an oxide layer, not shown separately, which has an increased electrical resistance on the surface than in the interior of the current conductor 20th forms.

The current conductor bridge 10th has a connecting element 30th on. In this is the conductor 20th as shown. In the connector 30th are a number of cross holes 32 formed, which in the present case along a along the conductor 20th extending line are arranged.

In each of the cross holes 32 is a respective screw 40 used. For this, the screws point 40 or the holes 32 complementary external or internal threads, which are not shown separately.

Every screw 40 has a respective conical or tapered section 42 on. Will the respective screw 40 towards the conductor 20th screwed in, can by means of the tapered section 42 the oxide layer of the current conductor already mentioned 20th be breached. This allows a particularly advantageous electrical connection directly between the screw 40 and the conductor 20th or the inside of the conductor 20th can be achieved.

Every screw 40 has a respective head 46 in which a respective inner profile 48 is trained. By means of the inner profile 48 is the respective screw 40 rotatable in a known manner, for example by means of an Allen key. In the present case, an internal hexagon profile is provided, but a different internal profile or alternatively an external profile can also be used.

Between each head 46 and the rest of the screw 40 is a respective predetermined breaking point 44 educated. This predetermined breaking point 44 is designed so that when a certain torque is applied to the inner profile 48 or generally speaking upside down 46 the head 46 from the rest of the screw 40 tears off. This can ensure that every screw 40 with one through the predetermined breaking point 44 predefined torque can be screwed in and when this predefined torque is reached the respective head 46 tears off. This torque is typically chosen so that the screw 40 with its tapered section 42 the oxide layer of the current conductor already mentioned 20th penetrates and thus a reliable permanent electrical connection to the interior of the conductor 20th manufactures. By tearing off the head 46 it is also achieved that it can be visually easily checked whether the screw 40 has been screwed in correctly, and there is also an unintentional loosening of the screw 40 prevented.

2nd shows a cross section through the conductor bridge 10th on a screw 40 . It can be seen that the conductor 20th not quite in the middle of the connecting element 30th is arranged and by screwing in the screw 40 slightly against one side of the connector 30th can be pressed. As already described, electrical contacting can be produced.

The proportions of the conductor 20th to the connecting element 40 show an example of how the current conductor with a small tear screw line through the small scope 20th in the connecting element 40 can be centered and held.

3rd shows the conductor bridge 10th with heads already torn off 46 of the screws 40 . This leaves only stub screws 40 , with the respective tapered sections 42 into the conductor 20th penetration. This is also shown separately in an enlarged view. Accordingly, in the conductor 20th a respective trough 24th by penetrating the screw 40 trained, whereby a reliable and permanent electrical connection is made.

A respective head 46 of the screws 40 can be done with an Allen key 60 can be operated, which in the respective inner profile 48 intervenes. It is not necessary to use a torque wrench because the respective breaking point 44 ensures the application of the correct torque.

For the Allen key 60 For example, a hexagon wrench or a ratchet wrench or an electric screwdriver can be used. This can be equipped with a protocol (stored or telemetric) to document the processes for quality assurance purposes.

4th shows an embodiment of a current conductor bridge 10th with an end stop 70 . The end stop 70 consists of an additional screw through a cross hole 32 of the connecting element 30th is screwed in, and up to which the current conductor 20th in the connecting element 30th is pushed. This allows a correct position of the conductor 20th in the connecting element 30th be ensured.

As shown, it is the end stop 70 used screw further into the connector 30th screwed in as the other screws 40 . The head of the end stop 70 The screw used is typically not torn off. However, if the head is torn off, the remaining stub is lower. This can be used optically to check the correct assembly.

5 shows an embodiment of a current conductor bridge 10th according to an alternative embodiment. Not all cross holes are involved 32 arranged along a line, but there are at least two transverse bores circumferentially spaced apart. This allows screws to be screwed in at different points on the circumference 40 respectively. As in 5 you can see an additional screw 50 one to the screw 40 screwed circumferentially spaced position. This can be the contacting of the conductor 20th facilitate.

The conductor 20th compared to the execution of 2nd a smaller diameter. Due to the greater scope, a two-row, angularly offset arrangement of centering tear-off screws around the conductor is useful 20th to center. In particular with clean centering, the surface of the conductor can be broken with the screw tips.

6 shows a connecting element 30th with the transverse bores formed therein 32 and a screw 40 before insertion.

7 shows an alternative embodiment of a connecting element 30th , being twice as many Cross holes 32 are present as in the execution according to 6 . This enables a double connection to be carried out, that is to say from both longitudinal ends of the connecting element 30th be inserted from a respective current conductor and fastened with four screws each. This enables a direct connection of two current conductors using only one connecting element 30th and respective screws.

8th shows a connecting element 30th , which is designed as a plate connector or plate press sleeve. There is a disc 80 arranged at the end, in which in turn an internal thread 81 is trained. This allows other components such as cable lugs or other connections to be screwed in or welded on. In the disc 80 are two nail holes formed, for example for attaching the connecting element 30th can be used on concrete formwork.

9 shows a connecting element 30th , which is designed as a block connector. For this purpose, the connecting element 30th a section 82 with a larger diameter, which is arranged at one longitudinal end. There is a bore with an internal thread 83 arranged. Other components can also be easily attached or welded to this.

10th shows an embodiment of a current conductor bridge 10th , being on the connecting element 30th a cable 84 connected. At an opposite longitudinal end is on the cable 84 a plate connector or a plate press sleeve 90 with a slice or a plate 92 arranged. This means that the same connection principle can be used as for the execution 8th be used, due to the flexibility of the cable 84 the dish 92 can be positioned more flexibly in the room.

11 shows one compared to 10th modified version that instead of the plate press sleeve 90 a weld tab 86 on the cable 84 connected. For example, other cables or other connection components can be easily welded to it.

12 shows another alternative design, using instead of the welding tab 46 a cable lug 88 with eyelet formed in it 89 is available. A cable can be connected to it, for example, or a connecting screw through the eyelet 89 be performed to establish a current-conducting connection.

13 shows another alternative embodiment, with at both longitudinal ends of the cable 84 a respective connecting element 30th with a conductor included 20th is arranged, the respective current conductors 20th by means of respective screws 40 are attached. This allows two conductors 20th about the fasteners 30th and the cable 84 be electrically connected together, the cable 84 provides some flexibility.

14 shows an embodiment in which at both longitudinal ends of a connecting element 30th which, according to the execution of 7 is formed, a respective cable 84 by means of respective screws 40 is attached. The screws 40 can be a possible outer sheath of the cable 84 penetrate and thus an electrically conductive connection via the connecting element 30th between the two cables 84 produce.

15 shows an embodiment in which on the connecting element 30th the current conductor bridge 10th another conductor immediately 20th is connected, at its opposite longitudinal end in turn a plate press sleeve 90 with plate 92 connected. This allows two conductors 20th by means of the connecting element 30th are connected to each other and a functionality for connecting further components through the plate connector or the plate press sleeve 90 to be provided.

16 shows the connecting element 30th which accordingly 9 is designed as a block connector with a current conductor inserted therein 30th and screws 40 . 17th shows this version in a different view. Thus, the typical use of the connecting element designed as a block connector 30th for receiving and attaching a conductor 20th shown.

18th shows that according to 8th Connection element designed as a plate connector 30th with current conductor inserted in it 20th and screws 40 . 19th shows that according to 7 executed connecting element 30th , which represents a double connector, with two current conductors inserted therein 20th as well as screws 40 for fastening them.

20th separately shows a conductor 20th with obvious protrusions 22 . 21st shows a cable 84 with a current-conducting strand 85 as well as an insulating sleeve 87 . This cable 84 can typically be bent flexibly and can be used in all versions in which a cable is provided. The sleeve can be inserted into an opening for the conductive connection 87 partially removed.

22 shows a cable lug 88 with eyelet 89 separately. 23 shows a welding tab 86 separately. 24th shows a plate connector or Disc press sleeve 90 with plate 92 separately. The in the 20th to 24th Components shown can be used accordingly in the previously described exemplary embodiments.

25th shows three cables 84 each with a weld-on tab attached to it 86 and oppositely attached connector 30th , with the three weld tabs 86 are welded together at one point as shown. This enables an electrically conductive connection between the three cables 84 can be achieved.

26 shows an embodiment in which two cables 84 each with a connecting element attached to it 30th and the conductor plugged into it 20th into another, shared connector 30th be introduced, in which in turn a conductor on the opposite side 20th is inserted, which with screws 40 is attached. This can create an electrically conductive connection between the cables 84 and ultimately between the conductors 20th getting produced.

Possible features of the proposal are presented in a structured manner below. The following structured features can be combined with one another as desired and can be included in any combination in the claims of the application. It is clear to the person skilled in the art that the invention already results from the object with the fewest features.

In particular, advantageous or possible configurations are shown below, but not the only possible configurations of the invention.

• Eine Stromleiterbrücke, aufweisend
  • - einen Stromleiter (20),
  • - ein Verbindungselement (30), und
  • - eine Anzahl von Schrauben (40),
  • - wobei die Schrauben (40) an dem Verbindungselement (30) befestigt und mit diesem elektrisch leitend verbunden sind,
  • - wobei mindestens eine Schraube (40) an ihrem dem Stromleiter (20) zugewandten Ende unter Ausbildung einer elektrisch leitenden Verbindung zwischen Schraube (40) und Stromleiter (20) in den Stromleiter (20) eindringt.

The invention includes:

• A current conductor bridge, having
  • - a conductor ( 20th ),
  • - a connecting element ( 30th ), and
  • - a number of screws ( 40 ),
  • - the screws ( 40 ) on the connecting element ( 30th ) attached and electrically connected to it,
  • - where at least one screw ( 40 ) on your the conductor ( 20th ) facing end to form an electrically conductive connection between screw ( 40 ) and conductor ( 20th ) in the conductor ( 20th ) penetrates.

The current conductor bridge mentioned above, each screw ( 40 ) on your the conductor ( 20th ) facing end to form an electrically conductive connection between screw ( 40 ) and conductor ( 20th ) in the conductor ( 20th ) penetrates.

The current conductor bridge mentioned above, whereby the in the current conductor ( 20th ) penetrating screws ( 40 ) through a surface layer of the current conductor ( 20th ) in a core material of the current conductor ( 20th ) penetrate.

The current conductor bridge mentioned above, the screws ( 40 ) to the conductor ( 20th ) ends facing one towards the conductor ( 20th ) tapering section ( 42 ) exhibit.

The current conductor bridge mentioned above, which extends to the current conductor ( 20th ) tapering sections ( 42 ) are conical, pointed, frustoconical or pyramidal.

The current conductor bridge mentioned above, the screws ( 40 ) in a respective cross hole ( 32 ) of the connecting element ( 30th ) with an external thread of the screw ( 40 ) complementary internal thread are included.

The current conductor bridge mentioned above, with all cross holes ( 32 ) along a line parallel to a longitudinal axis of the connecting element ( 30th ) runs, are arranged.

The above-mentioned current conductor bridge, a part of the cross holes ( 32 ) are arranged along a line that runs parallel to the longitudinal axis, and part of the transverse bores ( 32 ) are circumferentially offset.

The current conductor bridge mentioned above, the current conductor ( 20th ) is a rod, steel rod, mild steel rod, ribbed steel rod, cable or a strand.

The current conductor bridge mentioned above, the current conductor ( 20th ) is made of conductive metal or a metal alloy.

The current conductor bridge mentioned above, the current conductor ( 20th ) is round, flattened or is almost or completely square, quadrangular or polygonal.

The aforementioned current conductor bridge, the connecting element ( 30th ) is designed to have a respective current conductor at a first longitudinal end as well as at a second longitudinal end ( 20th ) and at least one of the two longitudinal ends has cross holes for screwing in the screws ( 40 ) having.

The aforementioned current conductor bridge, the connecting element ( 30th ) is designed as a double connector.

The aforementioned current conductor bridge, whereby an end or center stop ( 70 ) as position control for the current conductors to be picked up ( 20th ) in a hole in the connecting element ( 30th ) is arranged between or behind the longitudinal ends.

The aforementioned current conductor bridge, the connecting element ( 30th ) is designed as a plate connector.

The aforementioned current conductor bridge, the connecting element ( 30th ) to form a plate connector at one longitudinal end, one transverse to the longitudinal axis of the connecting element ( 30th ) lying disc ( 80 ) having.

The aforementioned current conductor bridge, the connecting element ( 30th ) is designed as a block connector.

The aforementioned current conductor bridge, the connecting element ( 30th ) to form a block connector at one longitudinal end a section ( 82 ) compared to the rest of the connector ( 30th ) has a larger diameter.

The aforementioned current conductor bridge, the connecting element ( 30th ) receives a rigid conductor in one end and a cable at the other end ( 84 ), which in a further connection element such as a plate press sleeve ( 90 ) with a plate ( 92 ) or a welding tab ( 86 ) with a flat end or cable lug ( 88 ) with an eyelet ( 89 ) or another connecting element ( 30th ) or block connector ( 82 ) flows out.

The aforementioned current conductor bridge, the connecting element ( 30th ) at one longitudinal end opposite the conductor ( 20th , 84 ) with another conductor ( 20th , 84 ) connected is.

The current conductor bridge mentioned above, the further current conductor ( 20th , 84 ) in the connecting element ( 30th ) is pressed in.

The current conductor bridge mentioned above, the current conductor bridge ( 10th ) is a ground connector.

The current conductor bridge mentioned above, the current conductor bridge ( 10th ) forms a high current connection.

The current conductor bridge mentioned above, the current conductor bridge ( 10th ) has a current carrying capacity of at least 20,000 amperes.

The aforementioned current conductor bridge, the current conductor bridge having a current carrying capacity of at least 40,000 amperes.

The current conductor bridge mentioned above, the current carrying capacity being a current which can flow in a time period of 0.1 seconds to one second [between 25 kA and 45 kA] and at the same time a temperature increase caused by the current remains below 260 K.

The current conductor bridge mentioned above, the current conductor bridge ( 10th ) has a resistance of less than 50 microohms or 200 microohms.

The current conductor bridge mentioned above, the current conductor bridge ( 10th ) has a resistance between 1 microohm and 50 microohms.

The current conductor bridge mentioned above, the screws ( 40 ) Are tear-off screws.

The current conductor bridge mentioned above, the screws ( 40 ) Threaded parts of tear-off screws are after a respective head has been torn off.

The current conductor bridge mentioned above, the screws ( 40 ) Stubs of tear-off screws are.

• - Einführen des Stromleiters in das Verbindungselement,
• - Eindrehen einer Anzahl von Schrauben in eine Anzahl von Querbohrungen, welche in dem Verbindungselement ausgebildet sind, wobei eine elektrisch leitende Verbindung zwischen einer jeweiligen Schraube und dem Verbindungselement ausgebildet wird,
• - Drehen jeder der Schrauben, so dass mindestens eine der Schrauben den Stromleiter kontaktiert und unter Eindringen in den Stromleiter eine elektrisch leitende Verbindung zwischen Stromleiter und Schraube ausbildet.

A method of forming a current bridge ( 10th ) with an electrically conductive connection between a current conductor and at least one connecting element, the method comprising the following steps:

• Inserting the current conductor into the connecting element,
• Screwing in a number of screws into a number of transverse bores which are formed in the connecting element, an electrically conductive connection being formed between a respective screw and the connecting element,
• - Turn each of the screws so that at least one of the screws contacts the current conductor and forms an electrically conductive connection between current conductor and screw when penetrating into the current conductor.

The above-mentioned method, wherein each screw contacts the current conductor and forms an electrically conductive connection between the current conductor and the screw by penetrating into the current conductor.

The above method, wherein at least one, preferably each screw on their the end facing the conductor has a section tapering towards the conductor.

• - das Verfahren vor dem Einführen des Stromleiters in das Verbindungselement das Eindrehen einer Positionsschraube durch eine Querbohrung in dem Verbindungselement aufweist,
• - wobei der Stromleiter soweit in das Verbindungselement eingeschoben wird, bis er an die Positionsschraube angrenzt.

The above method, wherein

• the method comprises inserting a position screw through a transverse bore in the connecting element before inserting the current conductor into the connecting element,
• - The current conductor is pushed into the connecting element until it adjoins the position screw.

• - auf Grund einer unterschiedlich tiefen Einschraubbarkeit der Schrauben eine nachträgliche Positionskontrolle des Stromleiters im Verbindungselement ermöglicht wird.

The above method, wherein

• - Due to the fact that the screws can be screwed in at different depths, it is possible to subsequently check the position of the current conductor in the connecting element.

• - durch die unterschiedlich weit herausstehenden Reste der abgerissenen Schrauben eine nachträgliche Positionskontrolle des Stromleiters im Verbindungselement ermöglicht wird.

The above method, wherein

• - The remnants of the torn-off screws that protrude to different degrees enable a subsequent position control of the current conductor in the connecting element.

The above-mentioned method, wherein an electrical connection which is as resistant as possible is formed with the penetration.

The above method, wherein the screws are rotated to a predetermined torque for penetration.

The above-mentioned method, wherein the predetermined torque is set for a respective screw in that the respective screw has a head which is connected to the rest of the screw in such a way that it breaks off when the predetermined torque is reached.

The above-mentioned method, wherein the tear-off head is connected to the rest of the screw via a predetermined breaking point.

The above-mentioned method, the screws being designed as tear-off screws.

The above-mentioned method, wherein the screws are designed to be rotated to a predetermined torque and then to remain in the connecting element with their threaded portion tearing off a respective head of the screw.

The above-mentioned method, wherein the tear-off screws ensure an insoluble, non-manipulable, optically perceptible, controllable electrically conductive connection.

The above-mentioned method, wherein a depth of penetration of the screw into the current conductor is correlated with the predetermined torque.

The above-mentioned method, wherein a current conductor bridge is formed by means of the method.

The aforementioned method, wherein the current conductor bridge is designed as mentioned above.

The above-mentioned method, with the aid and combination of several of the elements according to claims 1 to 27 partial flow bridges being pre-assembled in one work step before final assembly such that the connection of more than two current conductors can be carried out by connecting elements with tear-off screws alone.

Use of a number of screws to form a current bridge between a current conductor and a connecting element, in particular as mentioned above.
The claims now submitted with the registration and later are without prejudice for the achievement of further protection.

If, upon closer examination, in particular also of the relevant prior art, it turns out that one or the other feature is favorable for the aim of the invention, but is not crucially important, a formulation is of course already being striven for that includes such a feature , especially in the main claim, no longer has. Such a sub-combination is also covered by the disclosure of this application.

It should also be noted that the configurations and variants of the invention described in the various embodiments and shown in the figures can be combined with one another as desired. Individual or multiple features can be interchanged with one another. These combinations of features are also disclosed.

The back-references given in the dependent claims indicate the further development of the subject matter of the main claim through the features of the respective sub-claim. However, these are not to be understood as a waiver of the achievement of independent, objective protection for the features of the related subclaims.

Features that have only been disclosed in the description or also individual features from claims that comprise a plurality of features can be adopted at any time as essential to the invention in order to differentiate them from the prior art in the independent claim (s), even then, if such characteristics were mentioned in connection with other characteristics or achieve particularly favorable results in connection with other characteristics.

Claims (19)

Current conductor bridge, having - a current conductor (20), - A connecting element (30), and - a number of screws (40), - The screws (40) are fastened to the connecting element (30) and are connected to it in an electrically conductive manner, - At least one screw (40) penetrates into the current conductor (20) at its end facing the current conductor (20), forming an electrically conductive connection between the screw (40) and current conductor (20). Current conductor bridge according to one of the preceding claims, characterized in that the current conductor (20) is a rod, steel rod, structural steel rod, ribbed steel rod, cable or a strand. Current conductor bridge according to one of the preceding claims, characterized in that the current conductor (20) is formed from conductive metal or a metal alloy. Current conductor bridge according to one of the preceding claims, characterized in that the current conductor (20) is round, flattened, or almost or completely square, square or polygonal. Current conductor bridge according to one of the preceding claims, characterized in that the screws (40) penetrating into the current conductor (20) penetrate through a surface layer of the current conductor (20) into a core material of the current conductor (20). Current conductor bridge according to one of the preceding claims, characterized in that the screws (40) at their ends facing the current conductor (20) have a section (42) which tapers towards the current conductor (20). Current conductor bridge according to one of the preceding claims, characterized in that the sections (42) tapering towards the current conductor (20) are conical, pointed, frustoconical or pyramid-shaped. Current conductor bridge according to one of the preceding claims, characterized in that the screws (40) are received in a respective transverse bore (32) of the connecting element (30) with an internal thread complementary to an external thread of the screw (40). Current conductor bridge according to one of the preceding claims, characterized in that all transverse bores (32) are arranged along a line which runs parallel to a longitudinal axis of the connecting element (30). Current conductor bridge according to one of the preceding claims, characterized in that a part of the transverse bores (32) are arranged along a line which runs parallel to the longitudinal axis, and a part of the transverse bores (32) are arranged circumferentially offset thereto. Current conductor bridge according to one of the preceding claims, characterized in that the connecting element (30) is designed to receive a respective current conductor (20) both at a first longitudinal end and at a second longitudinal end and at least at one of the two longitudinal ends respective transverse bores (32) for screwing in the screws (40); and / or the connecting element (30) is designed as a double connector. Current conductor bridge according to one of the preceding claims, characterized in that an end or center stop (70) is arranged as a position control for the current conductors (20) to be accommodated in a bore of the connecting element (30) between or behind the longitudinal ends. Current conductor bridge according to one of the preceding claims, characterized in that the connecting element (30) is designed as a plate connector or block connector. Current conductor bridge according to one of the preceding claims, characterized in that the connecting element (30) receives a rigid current conductor in one end and a cable (84) at the other end, which in a further connecting element such as a plate press sleeve (90) with a plate (92) or a weld-on tab (86) with a flat end or cable lug (88) with an eyelet (89) or another press connector (30) or block connector (82) opens out. Current conductor bridge according to one of the preceding claims, characterized in that the connecting element (30) is connected at one longitudinal end opposite the current conductor (20, 84) to a further current conductor (20, 84) which is pressed into the connecting element (30). Current conductor bridge according to one of the preceding claims, characterized in that the current conductor bridge (10) is an earth connector and / or forms a high-current connection. Current conductor bridge according to one of the preceding claims, characterized in that the screws (40) are tear-off screws, or the screws (40) are threaded parts of tear-off screws after a respective head has been torn off, or the screws (40) are stubs of tear-off screws. Method for forming a current bridge (10) with an electrically conductive connection between a current conductor and at least one connecting element, the method comprising the following steps: Inserting the current conductor into the connecting element, Screwing in a number of screws into a number of transverse bores which are formed in the connecting element, an electrically conductive connection being formed between a respective screw and the connecting element, - Turn each of the screws so that at least one of the screws contacts the current conductor and forms an electrically conductive connection between current conductor and screw when penetrating into the current conductor. Procedure according to Claim 18 , characterized in that - due to the fact that the screws can be screwed in at different depths, it is possible to subsequently check the position of the current conductor in the connecting element; and / or - the remnants of the torn-off screws projecting to different degrees enable a subsequent position control of the current conductor in the connecting element.

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