Switching plug connector system cabling and device cabling

Abstract

In order to reduce manual intervention and / or overhead required to remove and / or insert an electrical device (41) from and / or into an electrically cabled combination of devices (41, 42, 43), according to the invention, switching bridges (33) are arranged in or on the housing (14) of a cable plug connector (1').

Description

[0001] Description

[0002] The invention is based on a switch connector system according to the preamble of independent claim 1.

[0003] Furthermore, the invention is based on a device cabling system comprising a switch connector system according to claim 1 and a plurality of cables.

[0004] Such switch connector systems are required to electrically connect and / or separate electrical devices, e.g. to implement a desired signal flow.

[0005] State of the art

[0006] DE 195 39 957 A1 discloses a switch plug for an electrical connector with a male connector and a female connector. This switch plug comprises a contact device that connects two selected blade elements when the female connector and the male connector are separated from each other, whereby the contact between the selected blade elements is released when the female connector and the male connector are plugged together.

[0007] EP 702 431 A2 discloses a switch plug for a strip connector on printed circuit boards, in particular on data bus boards. This plug has a plurality of sockets for receiving a male connector. The female connector contains contact elements assigned to at least two sockets, which form a short-circuit bridge between the sockets as long as no male contact is inserted. Inserting the male connector and thus spreading the elements receiving the male contacts leads to an interruption of the short-circuit bridge. The short-circuit bridge is created by direct contact between the sockets or via a contact insert embedded in the base body supporting the female connector.

[0008] A disadvantage of this prior art is that the arrangements known therein do not meet many currently existing requirements. In particular, it is common practice in industrial environments, in control systems, digital server stations, as well as in laboratories and research facilities, as well as in many other systems and facilities, to arrange electrical devices, for example in racks, and to wire them "flying" at the rear of their respective devices. For example, a device plug belonging to the electrical device can be arranged in particular at the said rear of the device and in turn be electrically connected on the connection side, e.g. to a circuit board of the respective electrical device. On the plug-in side, it can then be electrically connected to other electrical devices in the device network, e.g. for signal transmission, via a cable connector to which at least one electrical cable is connected.In particular, at least two cables can be connected to the cable connector. If one of these electrical devices is removed from the system, the cabling must also be changed, which is currently a disadvantage. Rewiring creates both an undesirably high level of manual effort and a new source of error, e.g., due to human error, e.g., errors in thinking, carelessness, and / or ignorance, caused, for example, by insufficient documentation, etc. Furthermore, this results in significant personnel expenditure, as a competent person must carry out or at least supervise the rewiring. Task.

[0009] The object of the invention is to reduce the manual and / or personnel effort required to remove and / or insert an electrical device from an electrically wired device network.

[0010] The problem is solved by the respective subject matter of the independent claims.

[0011] An electrical switch connector system comprises at least one device connector with a connection housing for mounting in or on an electrical device. On the connection side, the device connector has several device connections and, on the plug side, several plug contacts, each electrically connected to a device connection.

[0012] Furthermore, the electrical switch connector system has at least one cable connector that can be plugged into the device connector in one plugging direction. This cable connector has a cable connector housing that has at least one cable outlet. Furthermore, the cable connector has several mating contacts, each of which can be plugged into a plug contact of the device connector on the plug-in side and thus electrically connected to the respective plug contact of the device connector. On the connection side, the mating contacts each have a cable connection.

[0013] The switching connector system has at least one electrically conductive switching bridge.

[0014] This at least one switching bridge is at least partially in or on the

[0015] Cable connector housing of the cable connector in order to connect two of the mating contacts of the

[0016] Cable connectors to be electrically connected to each other.

[0017] The term “plugging direction” in the sense of a mathematical motion vector refers to the direction of the plugging process, but not to the orientation of the motion vector.

[0018] A particular advantage of the invention is that the cables which are connected to the respective cable terminals of the two mating contacts electrically connected to each other by the switching bridge are electrically connected to each other when unplugged.

[0019] A particularly significant advantage of the invention is that an electrical device can be removed from the network without subsequently having to change the cabling. In particular, depending on the signaling configuration, the signals that have passed through the removed electrical device, particularly according to a specified data transmission protocol, can now be easily forwarded within the cable connector from one cable to another and thus transmitted to the next device in the chain.

[0020] Through a unique, clever planning of the cabling and the switching bridges and cable assignment, various functions can be realized with a device network.

[0021] In a preferred embodiment, the electrical switch connector system is configured to break the electrical connection between the two mating contacts when plugged in. The two mating contacts are thus galvanically isolated when plugged in. In a preferred embodiment, the switching bridge consists of an electrically conductive material, in particular metal, e.g., sheet metal. The switching bridge can therefore be a stamped and bent part.

[0022] The cable connector housing and / or the cable connector shell may be made of an electrically insulating material, e.g., plastic or ceramic.

[0023] In a preferred embodiment, the cable connector housing has at least two cable openings. This allows the cable connection connector to be connected to two further electrical devices on the cable connection side, in addition to the first electrical device, to whose device connector it is connected on the plug-in side, namely to a second electrical device which has a second device connector and to a third electrical device which has a third device connection plug. The connection can preferably be made via a second and a third cable connection plug, which are each plugged into the second and third device connection plug. This also allows device networks to be set up, modified and, in particular, expanded very flexibly for additional fourth, fifth, sixth, ..., n devices without great effort.

[0024] In a further preferred embodiment, the at least one plug contact of the device connector can be a blade contact.

[0025] In a further preferred embodiment, the mating contacts of the cable connector can be designed as fork contacts. Thus, they each have two resilient insertion tongues, which are particularly designed to electrically and mechanically contact the aforementioned blade contact on both sides. In a preferred embodiment, the at least one switching bridge, i.e., each of the said switching bridges, can be arranged, at least in sections, between two insertion tongues of two mating contacts.

[0026] This can mean, for example, that the mating contacts are arranged and designed in such a way that one of each pair of plug-in tongues, which is outer in relation to the other pair of plug-in tongues, contacts the switching bridge when unmated, in order to automatically electrically connect these two mating contacts when unmated and automatically separate them when mated. In the mated state, the two outer plug-in tongues bend outwards when the respective blade contact is inserted. This electrically separates the two mating contacts. For such an arrangement, an essentially flat switching bridge is sufficient in terms of its geometric shape. In this case, the switching bridge can even be arranged completely - and not just in sections - between the two aforementioned outer plug-in tongues.

[0027] However, the aforementioned embodiment also includes an arrangement in which the at least one switching bridge is bent, for example, in a U-shape and is arranged with its ends between the two plug-in tongues of a pair of plug-in tongues, and thus mechanically and electrically contacts both plug-in tongues of each of the two pairs of plug-in tongues. This improves the conductivity of this connection in the unmated state, i.e. the conductance of the electrical connection between the two mating contacts can be twice as high in the unmated state as in the aforementioned variant, since the actual contact area is thereby approximately doubled. In this case, the plug-in tongue is only arranged in sections between the two outer plug-in tongues. In a preferred development, the cable connector has at least one part which is movable relative to the mating contacts and on which part at least one switching bridge is held.

[0028] This means that the cable connector can have one or more such moving parts. At least one of the aforementioned switching bridges is attached to this moving part / each of these moving parts. This can therefore involve one or more, e.g., 2, 3, 4, 5, 6..., n, switching bridges.

[0029] In a preferred embodiment, a single movable part can be arranged in the cable connector housing, with only one switching bridge being held on the movable part. This is useful, for example, for single-pole signal or power transmission. This switching bridge can move relative to the mating contacts and electrically contact them, thus electrically connecting them when unmated or breaking this connection when mated. For this purpose, the device connector can move the movable part during the mating process so that the said electrical connection between the two respective mating contacts is severed. When the plug connection is separated again, the movable part moves back to its original position and the electrical connection between these two mating contacts is re-established.

[0030] There may be a single moving part to which several switching bridges are held, e.g. 2, 3, 4, 5, ... , n switching bridges.

[0031] The cable connector housing may also contain multiple moving parts, each of which holds only one switching bridge. However, the cable connector housing may also contain multiple moving parts, each of which holds several, but not all, switching bridges.

[0032] During the plugging process, the movable part and thus also the switching bridges held on it can move away from the mating contacts, in particular under spring load. This can occur in a separating direction. The separating direction can, for example, run parallel to the plugging direction, e.g. if the movable part has a slide. The separating direction can also run perpendicular to the plugging direction, e.g. if the movable part is designed in the form of a rocker and / or a lever. Thus, the at least one switching bridge held on the at least one movable part can be removed from the respective mating contacts in the separating direction by plugging the cable connector into the device connector under spring load. This can correspond to the above-mentioned process in which the electrically conductive connection between the two mating contacts is broken.

[0033] However, "removable" also means that the distance to the respective mating contacts increases upon "removal." This device therefore also has the advantage of allowing particularly large air gaps to be maintained between the switching bridges and the mating contacts, making it particularly suitable for high voltages. Mixed designs are also conceivable, in which the electrical isolation is achieved by deforming the mating contacts, but the desired air gaps and / or creepage distances are largely generated by the movement of the moving part.

[0034] In a preferred embodiment, the movable part can have at least one spring element. This can, for example, be molded onto the movable part, particularly if the movable part is made of a plastic that has sufficient elasticity. This has the advantage of being inexpensive to manufacture. Furthermore, the spring element can thus - depending on the overall arrangement - apply a particularly advantageously directed force vector. Alternatively or additionally, at least one spring element can be arranged on the movable part. This latter spring element can be a separate spring element, for example a metallic coil spring. This has the advantage that the material of the movable part does not have to have the elasticity required for the spring properties.

[0035] This further development is therefore still entirely compatible with the aforementioned embodiment, in which at least one switching bridge is arranged at least in sections between two plug-in tongues of two mating contacts.

[0036] Finally, the aforementioned increase in the distance between the switching bridge and the respective contact has the advantage of a particularly large air gap. This can also be advantageous in addition to the aforementioned design.

[0037] For flat designs, it is advantageous if the separation direction runs in the plug-in direction, as this allows for better utilization of the available space in the cable connector housing. This can be important when many device connectors are arranged in a tight space.

[0038] If the separation direction is perpendicular to the insertion direction, this can be advantageous because the fork contacts wear less this way.

[0039] In a further advantageous embodiment, the at least one switching bridge can have two opposing contact surfaces. In the unplugged state, it can be in electrical and mechanical contact with the two plug-in tabs of each of the two mating contacts electrically connected by it, in that each of its two opposing contact surfaces makes mechanical and electrical contact with one of the two plug-in tabs of each mating contact.

[0040] In particular, the switching bridge can be designed to be essentially flat.

[0041] The switching bridge can be designed as a one-piece stamped part or stamped part and is preferably made of sheet metal.

[0042] In a preferred embodiment, each of the two plug-in tongues of the two mating contacts electrically connected by the switching bridge can each have a switching contact section which makes electrical and mechanical contact with the respective switching bridge in the said unplugged state.

[0043] A device cabling is, for example, suitable for the electrical connection of at least three, and in particular more than three, i.e. e.g. 4, 5, 6, 7, ..., n electrical devices, but at least, as already mentioned, of three devices, namely a first, a second and a third electrical device.

[0044] The device cabling comprises a plurality of electrical cables and a switch connector system of the aforementioned type. At least a first of the device connectors belongs to the first electrical device, i.e. it is fastened, e.g. with its connection housing, in or on the first electrical device and is electrically connected to the electrical device with its device connections, e.g. with electrical conductor tracks of a circuit board of the electrical device. The cable connector plugged into the first device connector is electrically connected, or at least connectable, to the second and to the third electrical device via at least one of the electrical cables. This can be done in particular via further device connectors and cable connection connectors on the respective electrical devices.

[0045] Through this connection, the first electrical device is automatically electrically connected to both the second and third electrical devices when plugged in. In contrast, when unplugged, the second and third electrical devices are automatically electrically connected to each other and automatically electrically disconnected from the first electrical device. Finally, when unplugged, the jumpers already electrically connect the two cables connected to the respective mating contacts within the cable connector.

[0046] As already indicated, the device cabling described here for only three electrical devices can be extended to any number of possible electrical devices.

[0047] Advantageous embodiments of the invention are specified in the subclaims and the following description.

[0048] Example

[0049] Several embodiments of the invention are illustrated in the drawings and explained in more detail below. They show:

[0050] Fig. 1a - d three electrical devices with device cabling;

[0051] Fig. 2a - e shows a connector system in a first embodiment; Fig. 3a - d shows a connector system in a second embodiment;

[0052] Fig. 4a - b a connector system in a third embodiment;

[0053] Fig. 5a - d a connector system in a fourth embodiment;

[0054] Fig. 6a - i a connector system in a fifth embodiment.

[0055] Some of the figures contain simplified, schematic representations. Identical reference symbols are used for similar, but possibly not identical, elements. Different views of the same elements may be scaled differently. Directional references such as "left," "right," "top," and "bottom" are to be understood with reference to the respective figure and may vary in the individual illustrations relative to the object depicted.

[0056] Fig. 1a shows a device cabling system comprising multiple cables 100 and multiple cable connectors 1, 1', of which one cable connector 1' has a jumper 33. Furthermore, three electrical devices 41, 42, 43 are shown, namely a first electrical device 41, a second electrical device 42, and a third electrical device 43. A device connector 2 is arranged on each of these devices 41, 42, 43 and is electrically connected on the connection side to the electronics of the respective electrical device 41, 42, 43.

[0057] Each device connector 2 is connected to one of the cable connectors 1,1' of the device cabling.

[0058] In the cable connector 1' shown in the middle, the aforementioned switching bridge 33 is open. This cable connector 1' is connected to one of the two other cable connectors 1 via a cable 100 each. The second electrical device 42 is thus connected to the first electrical device 41 (shown in the middle) via the device cabling. Furthermore, the third electrical device 43 is connected to the first electrical device 41 via the device cabling. However, the second 42 and the third 43 electrical devices are not directly connected to one another, but possibly only via the first electrical device 41, if this first electrical device 41 is intended to establish the signal flow between these two further electrical devices 42, 43.

[0059] Fig. 1b shows how the device connector 2 of the first electrical device is separated from the cable connector 1'. The switching bridge 33 closes automatically, and the two other electrical devices 42, 43 are thus automatically electrically connected to each other via the device cabling.

[0060] Fig. 1c and 1d show enlargements of Fig. 1a and are for clarity only.

[0061] Fig. 2a - e shows a connector system in a first embodiment.

[0062] The cable connector 1' has, as shown in Fig. 2a, a cable connector housing 14 and can be plugged into the device connector 2 in a plugging direction S. The device connector 2 has a device connector housing 24.

[0063] In Fig. 2b, the device connector housing 24 is shown transparent and the cable connector housing 14 is removed. This allows a view of the mating contacts 12 of the cable connector 1', which can be plugged into the plug contacts 21 of the device connector in a plug-in direction S. The orientation of the arrow in the plug-in direction S is chosen here from the subjective point of view of the cable connector; the reference symbol S stands for the direction of movement, but not for the orientation of the movement vector. Here, as well as in Fig. 2c, the cable connector 1' can be seen without the housing 14 from different angles. At least one movable part 3 of the cable connector 1' is shown. This movable part 3 has a slide 34 with an actuating section 341, which interacts with the device connector 2 during the plug-in process.Furthermore, the cable connector has at least one spring element 35, in this case four separate spring elements 35, which are designed as spiral springs.

[0064] In a further embodiment expressly disclosed herein as part of the invention, the spring elements can also be molded onto the movable part, in particular the slide. For this purpose, the slide can be made of a sufficiently elastic plastic, and the elasticity of the spring element can also be achieved through its shape.

[0065] A switching bridge 33 is attached to the carriage 34.

[0066] When unplugged, this switching bridge, due to the spring force of the spring elements, abuts against switching contact sections 123 of the mating contacts 12 to be electrically connected / bridged.

[0067] Figs. 2d and 2e show the device connector 2 and the cable connector 1' in the plugged-in state. Contact pins 21, e.g., not required for power transmission, abut against the actuating sections 341 and push the respective slides 34 away from the device connector against the spring force in a separating direction T. The switching bridge 33 is thereby separated from the switching contact sections 123. Thus, in the plugged-in state, the bridging is automatically removed. The separating direction T runs parallel to the plugging direction S. Figs. 3a to 3d show a second embodiment of the plug-in system.

[0068] Each mating contact has two insertion tongues 121, 122, of which one 121, 122 (namely, the two most distant ones) are electrically connected in the unmated state via the contact bridge 33, which in this case is flat. For this purpose, the two outer contact tongues 121, 122 each have a switching contact section 123'. The contact bridge 33 is arranged at least in sections between these two insertion tongues 121, 122, namely between the switching contact sections of the two insertion tongues 121, 122.

[0069] During the plugging process, these two outer insertion tongues 123' are pushed apart by the plug contacts 21 of the device connector 2. As a result, they lose electrical contact with the switching contact sections 123' and the electrical bridging is removed.

[0070] The contact pins 21 of the device connector 2 are part of a device connector 20, which consists of metallic contact elements. The device connector has a printed circuit board connection for soldering to a printed circuit board 60 belonging to the respective electrical device 41, shown in Fig. 3c.

[0071] Fig. 3d shows the non-bridging in the plugged state and the bridging in the unplugged state. It is noticeable that in the unplugged state, the distance between the two outer plug-in tabs and the plug contact bridge 123' is extremely small.

[0072] In addition, the cable connection 120 of the mating contacts 12 is shown here for the first time. This has a cage-shaped busbar 10 and a V-shaped clamping spring 11. Figs. 4a and 4b show a third embodiment, which represents a synthesis of the first and second embodiments. Here, too, as in the aforementioned second embodiment, the outer insertion tongues 121, 122 are bridged by the plug contact bridge 123 in the unmated state and, in the plugged state, are moved outward by the plug contacts 21 of the device connector 2, thus removing the bridging.

[0073] However, due to the very small distances, at least for high electrical voltages, as already mentioned in the previous embodiment, the desired clearances cannot yet be maintained in this way. To overcome this problem, as already shown in the first embodiment, the respective plug-in contact bridge 123' is attached to the carriage 34. In this case, however, a separate carriage 34 is provided for each plug-in contact bridge 123.

[0074] Furthermore, the cable connection 120, comprising the cage-shaped busbar 10 and the V-shaped clamping spring 11, can be seen even more clearly in these illustrations. Here, too, the separation direction T runs parallel to the insertion direction S.

[0075] In a fourth embodiment shown in Figs. 5a to 5d, the movable part 3 has a rocker 34'. Due to the spring force of the spring element 35, the plug contact bridge 33 held on the rocker 34' is pressed downward in the drawing in the unplugged state, thus connecting two adjacent mating contacts 12.

[0076] During the plugging process, however, a sliding bevel 343 of the rocker 34 slides onto a ramp 241 of the device connector housing 24, thus lifting the plug contact bridge 33 upwards against the spring force in the drawing and thus moving it away from the mating contacts 12 in the separation direction T. The separation direction T runs perpendicular to the plugging direction S.

[0077] A fifth embodiment is shown in Figs. 6a to 6i.

[0078] In Figs. 6a and 6c, the device connector 2 and the cable connector 1 ' are shown with their housings 24, 14.

[0079] The device connector 2 is soldered to the circuit board 60 with its device connections 20, each of which has a printed circuit board connection 26 at its end. The device connections are designed as a single piece with the plug contacts 21.

[0080] The cable connector 1 ' has, in this example, four cable openings 140, through each of which a cable 100 is guided.

[0081] Fig. 6d to 6f illustrate a concept that differs from the second embodiment as follows: Each of the plug-in tongues 121, 122 involved has a switching contact section 123". Between these switching contact sections 123" of the

[0082] The plug contact bridge 33 is electrically contacted on both sides by insertion tabs 121, 122 of a mating contact 120. In addition, as already mentioned in the aforementioned example, the plug contact bridge 33 is fastened to the slide 34. During the plugging process, the two insertion tabs 121, 122 of both participating mating contacts 12 are first pushed apart by the plug contact 21 of the device connector 2, thus releasing the plug contact bridge 33. In addition, the slide 34 is displaced by the plug contact such that the plug contact bridge 33 moves further away from the mating contacts 12. The first separation process is illustrated again in a front view in Figs. 6g to 6i.

[0083] Fig. 6g shows the current flow 200 through two cables 100, two mating contacts 12 bridged by the plug contact bridge 33 and through the plug contact bridge 33 itself.

[0084] On the cable connection side, the stripped cables 100 are plugged into the respective cable connections 120 using a so-called “push-in” technique.

[0085] Fig. 6h shows the two mating contacts 12 in the unplugged state, while their plug-in tongues 121 electrically and mechanically contact the plug-in contact bridge 33 with its switching contact sections 123" on both sides.

[0086] Fig. 6i shows the plugged-in state, in which the two insertion tabs 121, 122 of the plug contact 21 of the device connector 2 are pushed apart. As a result, the two associated switching contact sections 123" lose mechanical and electrical contact with the plug contact bridge 33 and release it. The current / signal flow 200 shown in Fig. 6g is thus interrupted.

[0087] Applicant: HARTING Electronics GmbH

[0088] Title: Switch connector system and device cabling

[0089] List of reference symbols

[0090] 1 , 1 ' cable connector

[0091] 10 (cage-shaped) busbar

[0092] 11 clamping spring

[0093] 12 mating contacts, fork contacts

[0094] 120 cable connection

[0095] 121 , 122 Insert tongues

[0096] 123, 123', 123" switch contact sections

[0097] Cable connector housing

[0098] 140 cable opening

[0099] 2 device connectors

[0100] 20 Device connection

[0101] 21 plug contact, blade contact, contact pin

[0102] 24 device connector housings

[0103] 243 Ramp

[0104] 26 PCB connector

[0105] 3 moving part

[0106] 33 Switch bridge

[0107] 34, 34' sled, seesaw

[0108] 343 Sliding slope

[0109] 35 spring element

[0110] 41 , 42, 43 electrical device

[0111] 6 Printed circuit board Cable Electrical current flow Plug-in direction Separation direction

Claims

Claims Electrical switch connector system, comprising: at least one device connector (2), which has the following: o a connection housing (24) for fastening in or on an electrical device (41, 42, 43), o a plurality of device connections (20) on the connection side, and o a plurality of plug contacts (21) on the plug-in side, each electrically conductively connected to a device connection (20); and furthermore at least one cable connector (1') which can be plugged into the device connector (2) in a plug-in direction (S), which has the following: o a cable connector housing (14) which has at least one cable opening (140), o a plurality of mating contacts (12), which on the plug-in side can each be plugged into a plug contact (21) of the device connector (2) and are thus electrically conductively connected to the respective plug contact (21) of the device connector (2); wherein o the mating contacts (12) each have a cable connection (120) on the connection side;wherein the switching connector system has at least one electrically conductive switching bridge (33), wherein the at least one switching bridge (33) is arranged at least partially in or on the cable connector housing (14) of the cable connector (1 ') in order to; State to electrically connect two of the mating contacts (12) of the cable connector (1) to each other.

2. Electrical switch connector system according to claim 1, wherein the electrical switch connector system is designed to cancel the said electrical connection of the two mating contacts (12) of the cable connector by the switching bridge (33) in the plugged-in state.

3. Electrical switch connector system according to one of the preceding claims, wherein the cable connector housing (14) has at least two cable openings (140).

4. Electrical switch connector system according to one of the preceding claims, wherein the at least one plug contact (21) of the device connector (2) is a blade contact or a contact pin.

5. Electrical switch connector system according to claim 4, wherein the mating contacts (12) of the cable connector (1') are designed as fork contacts and thus each have two resilient insertion tongues (121, 122) which are designed to electrically and mechanically contact the aforementioned plug contact (21) on both sides.

6. Electrical switch connector system according to claim 5, wherein the at least one switching bridge (33) is arranged at least in sections between two insertion tongues (121, 122) of two mating contacts (12) in order to electrically connect these two mating contacts (12) to one another in the unmated state and to separate them from one another in the mated state.

7. Electrical switch connector system according to one of the preceding claims, wherein the at least one cable connector (1') has at least one part (3) which is movable relative to the mating contacts (12), on which at least one switching bridge (33) is held.

8. Electrical switch connector system according to claim 7, wherein the at least one switching bridge (33) which is spring-loaded on the at least one movable part (3) by plugging the cable connector (1 ') with the device connector (2) can be removed from the mating contacts in a separating direction (T).

9. Electrical switch connector system according to claim 7, wherein the separation direction runs parallel to the plugging direction (S).

10. Electrical switch connector system according to claim 7, wherein the separation direction (T) is perpendicular to the plugging direction (S).

11. Electrical switch connector system according to one of claims 6 to 9, wherein the movable part (3) has at least one spring element or at least one separate spring element (35) is arranged on the movable part (3).

12. Electrical switch connector system according to claim 4, wherein the at least one switching bridge (33) has two mutually opposite contact surfaces, wherein the switching bridge (33) in the unplugged state is in electrical and mechanical contact with the two insertion tongues (121, 122) of each of the two mating contacts (12) electrically connected by it, in that one of the two mutually opposite contact surfaces of the switching bridge (33) is in contact with one of the two Insertion tongues (121, 122) of each mating contact (12) are mechanically and electrically contacted. Electrical switch connector system according to claim 12, wherein the switching bridge (33) is substantially flat. Electrical plug connector system according to one of the preceding claims, wherein the switching bridge (33) is designed as a one-piece stamped part or stamped and bent part and consists of sheet metal. Electrical switch connector system according to one of claims 12 to 14, wherein, in the unmated state, each of the two insertion tongues (121, 122) of the two mating contacts (12) electrically connected by the switching bridge (33) has a switching contact section (123') which makes electrical and mechanical contact with the respective switching bridge (33).Electrical switch connector system according to one of the preceding claims, wherein said cable connection (120) of the respective mating contact (12) has a cage-shaped busbar (10) and a substantially V-shaped clamping spring (11). Device cabling, suitable for the electrical connection of three electrical devices, namely a first (41), a second (42), and a third (43) electrical device, wherein the device cabling comprises a plurality of electrical cables (100) and a switch connector system according to one of the preceding claims, wherein at least a first (1') of the device connectors belongs to the first electrical device (41), wherein the cable connector (1') can be electrically conductively connected to the second (42) and the third (43) electrical device via at least one of the electrical cables (100), so that in the... first device connector (1 ') in the plugged-in state, the first electrical device (41) is automatically electrically connected to both the second (42) and the third electrical device, and wherein in the unplugged state, the second (42) and the third (43) electrical devices are automatically electrically connected to one another and automatically electrically separated from the first electrical device (41).

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