ES2984495T3 - Arrangement of a power distribution component and an electrical socket with an overcurrent protection device - Google Patents

Abstract

The present invention relates to an electrical socket (1) with an overcurrent protection device and to an arrangement of a current distribution component and an electrical socket (1). The electrical socket (1) according to the invention is provided with a printed circuit board (2), the printed circuit board (2) having an input contact (3) and an output contact (4). The input contact (3) can be electrically connected to a current-carrying component. The printed circuit board (2) has a conductive track (5), the input contact (3) and the output contact (4) being electrically connected to each other by means of the conductive track (5), at least a partial section of the conductive track (5) forming the overcurrent protection device. At least this partial section of the conductive track (5) is hermetically sealed. (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Arrangement of a power distribution component and an electrical socket with an overcurrent protection device

The present invention relates to an arrangement of a power distribution component and an electrical socket with an overcurrent protection device. The power distribution component is in particular a power distribution component in low-voltage networks. The power distribution component is designed as a switchable or non-switchable power strip. The power distribution component is preferably a switching device, preferably a switching strip, in particular a load switching strip, for example a low-voltage (NH) high-performance switching strip.

Load switching strips of this type are known, for example, from EP 1993 116 A1 and DE 38 12504 A1.

Nowadays there is a growing trend to monitor the energy consumption of users and consumers and in particular to measure or control the voltage applied to a current-carrying component of a current distribution component in order to monitor, control and regulate the power grid. Furthermore, today's electricity distribution networks require a high degree of flexibility regarding the injection and withdrawal of electrical energy, due for example to fluctuations in the performance of so-called renewable energies in the form of, for example, wind turbines, wind farms, tidal power plants and solar parks or smaller solar systems in private households that produce electricity. The measurement or control preferably takes place in continuous operation.

For the purposes mentioned above, it is necessary to know the voltage and/or current values applied to a current-carrying component, in particular to a current-carrying component of a current distribution component.

For this purpose, an electrical socket is required to absorb a voltage present at a current-carrying component in order to measure the electrical voltage present at the current-carrying component. In addition, such an electrical socket can be used additionally or alternatively to supply current to an electronic component, such as measuring and/or evaluation electronics. With these measuring and/or evaluation electronics, the voltage applied to the current-carrying component can, for example, be measured, recorded, processed and/or evaluated and the corresponding measured values or measurement results can be transmitted, for example via a network, in particular via a wireless network.

For example, to protect electronic components connected to the power outlet from overcurrent, subsequent electronic components must be protected from overcurrent. This is usually done by means of separate electrical fuses.

Furthermore, especially in the area of current distribution components, there is a need to protect the electrical socket in such a way that, in the event of an overcurrent being applied to the electrical socket, no arc flash occurs in the area of the electrical socket. Since an arc flash occurs in the socket between exposed current-carrying components, the current distribution component can induce a stray arc flash, which can lead to damage of the exposed current-carrying components, to the current distribution component itself or even to a risk for neighbouring persons or objects.

An electrical socket with an overcurrent protection device is known from EP 3 252 795 A1.

This electrical outlet has an overcurrent protection device in the form of a separate electrical fuse which can be inserted into a housing of the electrical outlet, the electrical fuse establishing an electrical connection between an input contact and an output contact.

The electric fuse has the function of protecting an electronic component connected to the output contact against overcurrents. Furthermore, EP 3252795 A1 discloses an arrangement of a current distribution component in the form of a switching strip and the electrical socket mentioned above. The electrical socket is arranged inside the current distribution component, the input contact of the electrical socket being plugged into an exposed cable connected to the switching strip and electrically connected to it.

WO 2016/208612 A1 discloses a circuit board with an electrical socket, wherein a subsection of a conductive track forms an overcurrent protection device for the electrical socket.

The object of the present invention is to develop an electrical socket with an overcurrent protection device such that it is particularly simple and inexpensive to manufacture and, in the event of an overcurrent occurring in the electrical socket, reliably interrupts an electrical circuit connected to the output contact and reliably prevents the occurrence of a stray light arc. Furthermore, an object of the present invention is to provide an arrangement of a current distribution component and an electrical socket.

This object is achieved by an arrangement having the features of claim 1.

The electrical socket with an overcurrent protection device is used to absorb a voltage applied to a current-carrying component in order to measure the electrical voltage applied to the current-carrying component and/or in order to supply power to an electrical component. The electrical component can be, for example, measuring and/or evaluation electronics. The current-carrying component is a current-carrying contact of a current distribution component, in particular a current-carrying contact of a load-switching strip. The current-carrying contact serves to accommodate an electrical fuse, in particular an NH fuse or an NH fuse insert. However, the contact can also be used to hold a disconnector blade.

The current-carrying component, the current-carrying contact, in particular the NH contact, is an exposed current-carrying component. In this case, "exposed" means that the current-carrying component has an exposed conductive surface, i.e. a surface that is not hermetically sealed from the environment, in particular not hermetically sealed from the environment, so that there is a risk of sparking or arcing on an exposed current-carrying component.

The electrical socket is provided with a circuit board, the circuit board having an input contact for contacting the current-carrying component and an output contact. The input contact can be electrically connected to the current-carrying component. The circuit board has a conductive track, the input contact and the output contact being electrically connected to one another via the conductive track, at least a subsection of the conductive track forming the overcurrent protection device. At least this subsection of the conductive track is hermetically sealed.

In the inventive arrangement, it is therefore not necessary to provide a separate electrical fuse, for example in the form of an SMD fuse (surface mount device). Rather, the overcurrent protection device is formed by the circuit board's own conductor track, so that in the event of an overcurrent, a subsection of the conductor track is broken or destroyed and the circuit is thus interrupted. The fact that at least this subsection of the conductor track, which forms the overcurrent protection device, is hermetically sealed, prevents an arc of light from occurring in the area of the destruction point in the event of an overcurrent and the associated destruction of the conductor track, or the resulting arc of light is almost encapsulated in the destruction socket, so that the arc of light cannot have an influence on the surroundings of the socket. This ensures that, in the event of an overcurrent in the socket, the formation of a light arc is prevented or at least that any light arc that may occur cannot have an influence on surrounding components, in particular it cannot cause a stray light arc on the current-carrying component and other current-carrying components.

In the arrangement according to the invention, it is therefore not necessary to introduce a separate fuse, for example by soldering it to the circuit board, nor to provide special receptacles for a replaceable fuse. The arrangement according to the invention is thus designed to be particularly simple and, in particular, inexpensive to manufacture. For example, the circuit board can be designed as a printed circuit board.

The circuit board can certainly be configured as a flexible circuit board, for example as a laminated circuit board.

The circuit board is preferably configured as a rigid circuit board.

Since the socket does not require or has a separate fuse, the socket is also characterised by a particularly compact construction, so that only a particularly small installation space is required for the arrangement of such an electrical socket. Due to the particularly small space for the electrical socket, existing power distribution components in particular can easily be equipped with an electrical socket.

In the event of an overcurrent and the resulting destruction of the conductive track, the entire socket can be replaced, for example. Preferably, the components electrically connected to the socket are still used, so that in the event of an overcurrent only the socket needs to be replaced. In the event of an overcurrent, full functionality can therefore be restored easily and cost-effectively.

It is considered particularly advantageous if the entire conductive track is hermetically sealed. This ensures particularly good protection.

Preferably, the entire conductive track forms the overcurrent protection device, the entire conductive track being hermetically sealed.

It is considered particularly advantageous when the circuit board has a base plate with a conductive track adhered thereto, the subsection, in particular the entire conductive track, being formed between the base plate and a cover layer attached to the circuit board, in particular to the base plate.

The cover layer can be, for example, a varnish or another plate, in particular another plate as a base plate.

Preferably, the base plate and/or the cover layer are made of an electrically non-conductive or poorly conductive material. Preferably, the base plate or the cover layer is made of an electrically insulating plastic, in particular polyester or a fibre-reinforced plastic.

The input contact and/or the output contact are preferably configured as through contacts.

It is considered particularly advantageous if the input contact and/or output contact are designed as soldering surfaces, also called pads, or have such a soldering surface.

The conductive track is made of a single material, i.e. the conductive track is made of a single material throughout, so that no material inhomogeneities are formed or occur in the conductive track. The conductive track is preferably made of copper.

The circuit board is preferably manufactured using an corrosive process.

It is considered particularly advantageous if the nominal current for the electrical socket, specifically for the subsection of the conductive track that forms the overcurrent protection device or for the entire conductive track, is between 10 mA and 10 A.

In particular, the nominal current, when using the electrical socket to obtain a measurement signal, is intended to be between 10 mA and 10 A.

If the socket is used to supply power to an electronic component, it is particularly advantageous if the nominal current is between 1 mA and 200 mA, preferably between 10 mA and 50 mA.

The socket is preferably designed such that it can be used with alternating voltages of 200 V to 1500 V, in particular 300 V to 1000 V, preferably 400 V to 800 V, particularly preferably 450 V to 750 V, particularly preferably between 550 V and 700 V, particularly preferably between 650 V and 700 V.

However, it is also perfectly possible to use the electrical outlet with direct voltage, in which case the preferred voltage range is 200 V to 450 V.

The electrical socket is preferably used in current distribution components, particularly in main distributions in low voltage networks.

The socket is preferably used on main circuits with a rated short-circuit current of at least 50 kA.

For particularly simple and cost-effective manufacturing, it is considered particularly advantageous if the electrical connection between the input contact and the output contact is formed exclusively by the conductive track.

In order to limit or define the sub-section of the conductive track forming the overcurrent protection device with respect to its location on the circuit board, it is considered particularly advantageous when the conductive track, in an area between the input contact and the output contact, has a narrowing section with a reduced cross-section with respect to the sections of the conductive track adjacent to the narrowing section, the narrowing section forming the overcurrent protection device, the narrowing section being hermetically sealed.

In this context, it is considered particularly advantageous if the conductive track has several hermetically sealed constriction sections. It has been found surprising that in the event of an applied overcurrent, the conductive track is not only destroyed in one of the constriction sections, if there are several constriction sections, but is destroyed in several or even in all constriction sections. The provision of several constriction sections has the advantage that the forces or energies that occur during destruction in the respective destroyed constriction section are lower than when only one constriction section or a subsection of the conductive track is destroyed. In this way, by providing several constriction sections, the energy or forces that occur in the event of an overcurrent in the respective constriction section can be reduced, so that the circuit board or base plate material and the cover layer can have a lower mechanical resistance force, in particular a lower force than is required in only one constriction section or no constriction section at all, which has an advantageous effect on material and manufacturing costs.

It is considered particularly advantageous if the minimum cross-section of the narrowing section is 30% to 90%, in particular 50% to 90%, particularly preferably 70% to 90% of a maximum cross-section of the conductor track. However, a minimum cross-section of the narrowing section of only up to 30% or 70% of the maximum cross-section of the conductor track is also conceivable.

The circuit board is preferably designed as a multilayer board, with at least the subsection forming the overcurrent protection device, in particular the entire conductive track, being configured between the at least two inner layers. The circuit board is thus a multilayer circuit board. The section forming the overcurrent protection device or the entire conductive track is hermetically sealed from the environment by the two inner layers.

In an advantageous embodiment, it is provided that the socket outlet has a connecting device, the connecting device being electrically connected to the input contact, the connecting device being able to establish an electrical connection, preferably releasable, to the input contact via the connecting device, or the connecting device being electrically connected to the output contact, the connecting device being able to establish an electrical connection, preferably releasable, to the output contact. This embodiment makes it easier for the user to establish an electrical connection to the input contact or the output contact of the socket outlet, for example to connect measuring or evaluation electronics to the output contact. Furthermore, in the event of an overcurrent and the associated destruction of the conductive track, in the case of a connecting device by means of which a releasable electrical connection can be established, the entire electrical socket can be replaced with hardly any effort, since the electrical connection made to the other component or components, for example connecting cables, is designed to be releasable by means of the connecting device, so that the electrical connection between the unusable electrical socket and the other component is easy to release and the electrical connection to the new electrical socket and to other components is easy to establish. In the event of an overcurrent, in particular only the affected electrical socket needs to be replaced and a component, in particular a wiring, which is electrically connected to the affected electrical socket by means of the connecting device does not need to be replaced but can continue to be used.

Certainly, the connecting device can be designed so that it is immobile relative to the circuit board.

Preferably, the connecting device is electrically connected to the input contact or the output contact via a flexible cable or flexible conductor. This makes it easier to establish an electrical connection.

In an advantageous embodiment, it is provided that the connecting device is non-releasably connected to the input contact or the output contact, preferably the connecting device or a cable connected to the connecting device is soldered to the input contact or the output contact.

The connection device is preferably designed as a terminal for receiving an electrical cable and/or an electrical conductor. This embodiment makes it easier for the user to establish an electrical connection to the input contact or the output contact of the electrical socket. The terminal can be designed, for example, as a screw terminal, spring terminal or insulation displacement terminal. In particular, the terminal is soldered to the circuit board, preferably to a pad on the circuit board.

In a preferred embodiment, the connecting device is releasably connectable to a coupling device corresponding to the connecting device, to generate a releasable electrical connection.

The connection device is preferably configured as a plug or as a connector for inserting a corresponding connector or for inserting into a corresponding socket.

It is provided that the electrical socket has a spring contact for contacting the current-carrying component, the spring contact being electrically connected to the input contact. Preferably, the spring contact is fixedly connected to the circuit board, in particular soldered to the circuit board. This configuration of the electrical socket is considered to be particularly advantageous with regard to an arrangement of the electrical socket on the current-carrying component or on an electrical component having the current-carrying component, since in order to establish an electrical connection between the current-carrying component and the electrical socket, only the spring contact has to mechanically contact an exposed section of the current-carrying component, so that establishing the electrical connection is particularly simple. For example, the electrical socket can be inserted or inserted next to the current-carrying component into a current distribution component or into an electrical component in such a way that when inserted or inserted, the spring contact comes to rest on an exposed section of the current-carrying component. It is perfectly conceivable that the electrical socket slides over the current-carrying component, for example an electrical contact in a switching strip.

In addition, a spring contact is particularly inexpensive and easy to manufacture and can be connected to the input contact of the socket, for example by soldering.

It is considered particularly advantageous if the spring contact is formed by a curved band or a curved strip of an elastic, electrically conductive material, in particular a metal or a metal alloy.

In a particularly preferred manner, the spring contact has a first arm and a second arm, the first arm being connected to the input contact and the second arm being designed as a free arm, the second free arm serving to contact the current-carrying component.

In the case of an electrical socket with spring contact, it is considered particularly advantageous if the spring contact has a first arm and a second arm, the first arm being connected to the input contact and the second arm being configured as a free arm, in this sense it can be moved freely, whereby the second free arm is mechanically supported on the circuit board, a contact section being formed between the two arms, the contact section being arranged at a distance from the circuit board.

Preferably, the output contact is formed on a side of the circuit board remote from the input contact and/or the output contact is accessible from a side of the circuit board remote from the spring contact.

The circuit board is in particular a flat circuit board.

It is considered particularly advantageous if the circuit board has a recess for arranging the current-carrying component, in particular the spring contact is arranged adjacent to the recess. The recess is in particular designed as a through opening surrounded by the circuit board. Such a configuration of the circuit board enables particularly stable mechanical mounting of the circuit board relative to the current-carrying component and positioning of the electrical connection, in particular of a subsection of the conductive track, preferably the entire conductive track, in particular close to the current-carrying component.

Preferably, the electrical socket has a fixing structure, in which the electrical socket can be fixed to the current-conducting component or to a component having the current-conducting component, for example a load-switching strip, in particular a housing, in which the current-conducting component or the component has a counter-fixing structure corresponding to the fixing structure. This embodiment of the electrical socket allows a particularly simple fixing of the electrical socket to the current-conducting component or to a component having the current-conducting component. By interlocking the fixing structure and the counter-fixing structure, the electrical socket is mounted in a particularly stable manner with respect to the current-conducting component. This ensures, on the one hand, the mechanical stability of such an arrangement of electrical socket and current-conducting component. On the other hand, the assembly is also simplified because the electrical socket is held in this position when the correct position is reached.

It is considered particularly advantageous if the socket can be fixed to a cover for covering the current-conducting component, in particular an exposed contact, or to a supporting part having the current-conducting component, whereby the cover or the supporting part has the counter-fixing structure corresponding to the fixing structure.

Preferably, the electrical socket is arranged together with the current-carrying component in a space covered by the cover. This saves space in particular. In addition, a separate cover is not required. And the cover provides additional mechanical and electrical protection.

It is considered particularly advantageous if the circuit board has the fixing structure, in particular a partial area of the circuit board, which forms the fixing structure. In particular, the fixing structure is designed as a projection and the counter-fixing structure as a projection or recess or vice versa, the fixing structure is designed as a projection or recess and the counter-fixing structure is designed as a projection.

In particular, it is provided that the fixing structure and the counter-fixing structure are designed as a clip connection.

Due to the particularly small space requirement of the electrical socket, current distribution components, in particular already existing ones, can easily be equipped with an electrical socket to achieve the arrangement according to the invention.

The current distribution component is designed as a switchable or non-switchable terminal block, in particular as a load switching terminal block, particularly preferably as an NH load switching terminal block.

In particular, it is provided that the load switching strip has a plurality of contacts, the respective contact having a first section for receiving the electrical fuse or for receiving the disconnecting blade and the respective contact having a second section which can be connected or connected to an electrical input or electrical output of the switching strip, the spring contact of the electrical socket contacting the corresponding contact in the region of the second section.

In a preferred embodiment of the arrangement, it is provided that the current distribution component has a cover for covering the first contact and/or the second contact, the cover being able to be connected to a support part of the current distribution component of the contacts, in particular the cover can be inserted into the support part, the electrical socket having a fastening structure and the cover having a counter-fixing structure corresponding to the fastening structure, the electrical socket being fastened to the cover. This configuration of the arrangement is to be regarded as particularly advantageous with regard to the assembly or retrofitting of an existing current distribution component, since the cover separated from the support part can be equipped with the electrical socket or several electrical sockets in a particularly simple manner, and then the cover provided with the electrical sockets or the electrical socket simply has to be inserted into the support part, it being provided in particular that a spring contact of the electrical socket comes into contact with the corresponding contact of the current distribution component when the cover is inserted into the support part.

With regard to the arrangement of the electrical socket in the cover, it is considered particularly advantageous if the cover has a cap for covering the contact of the current distribution component, the circuit board of the electrical socket being arranged on a surface of the cap facing the carrier part.

As regards the cap, it is considered advantageous if it has an opening for inserting the contact on the side facing the carrier part, the circuit board of the electrical socket being arranged in the area of the opening, in particular the circuit board having a recess for the contact, in particular in the form of a through opening.

It is considered especially advantageous when the circuit board forms a bottom section of the hood.

In a preferred embodiment, it is provided that the circuit board has a recess for arranging the first current-conducting component or the second current-conducting component, the electrical socket having a spring contact arranged adjacent to the recess, the spring contact being in contact with the first current-conducting component or the second current-conducting component.

In particular, the spring contact is electrically connected to the input contact and the spring contact is fixedly connected to the circuit board. It is considered particularly advantageous when the spring contact protrudes into the recess in a plan view perpendicular to an extension direction of the circuit board.

Preferably, the circuit board extends perpendicular or substantially perpendicular to a placement direction of the cover.

With regard to the cover, it is considered particularly advantageous if the cover has a cap and a supporting structure for receiving the cap, the supporting structure having the counter-fixing structure for fixing the electrical socket. Preferably, the cover is connected or can be releasably connected to the supporting structure, in particular insertable into the supporting structure. The supporting structure can in particular be connected to a supporting part having the current-conducting components, in particular to a supporting part having the free contacts. Preferably, the supporting structure can be inserted into the supporting part.

As regards the fixing structure and the counter-fixing structure, it is perfectly conceivable that the fixing structure of the electrical socket is formed by the circuit board itself, the counter-fixing structure corresponding to the fixing structure being formed by two parallel sub-sections spaced apart from each other of the corresponding component, in order to fix the electrical socket to the corresponding component, the circuit board is inserted into the space between the two sub-sections and is held tightly between the sub-sections.

In this context, it is considered particularly advantageous if the counter-fixing structure has a contact section for the circuit board, whereby the circuit board comes into contact with the contact section when the circuit board is inserted between the two sub-sections and the contact section thus prevents further insertion of the circuit board. This ensures that the circuit board is in the correct position relative to the current-carrying component after it has been inserted into the counter-fixing structure.

Preferably, the cover, in particular the supporting structure of the cover, houses wiring connected to the output contact of the electrical socket.

This considerably simplifies the assembly of the current distribution component, especially with regard to any electronics, since the socket, the wiring, the cover, if necessary the cap and the supporting structure can first be mounted separately and, in a later step, this entire arrangement can be connected to a carrier part having the contacts or the current-carrying component, it being provided in particular that the cover with the electrical socket arranged in this cover is placed on the carrier part, whereby in the placement process the output contact, in particular the spring contact connected to the output contact, comes into contact with the current-carrying component, in particular the contact, so that a separate contact of the input contact of the socket and the current-carrying component is not necessary. Description of figures

The invention is represented in the figures by means of several exemplary embodiments, without being limited to them.

They show:

Fig. 1 shows a first embodiment of the electrical socket, in a perspective view,

Fig. 2 shows the electrical socket according to Fig. 1, in a plan view on the front side,

Fig. 3 shows the electrical socket according to Fig. 1, in a plan view on the back side,

Fig. 4 shows the electrical socket according to Fig. 1, with wiring connected to the socket, in a plan view on the back side,

Fig. 5 shows the electrical socket according to Fig. 1, with spring contact and wiring connected to the socket, in a perspective view,

Fig. 6 shows a second embodiment of the electrical outlet, in a perspective view,

Fig. 7 shows the electrical socket according to Fig. 6, in a plan view on the front side,

Fig. 8 the electrical socket according to Fig. 6, with spring contact and wiring connected to the socket, in a perspective view,

a Fig. 9 a switching strip with electrical sockets arranged thereon, in a perspective view, a Fig. 10 the switching strip according to Fig. 9, in an exploded view,

Fig. 11 a cover of the switching strip according to Fig. 9 with an electrical socket arranged therein, in a sectional view,

Fig. 12 shows a partial area of the cover according to Fig. 11, in a sectional view,

Fig. 13 shows a perspective view of an electrical contact arrangement of a switching strip with electrical sockets arranged on the contacts of a third embodiment,

Fig. 14 a partial area of the representation according to Fig. 13, in a perspective view,

Fig. 15 a first contact of the arrangement according to Fig. 14, with an electrical socket arranged therein, in a perspective view,

Fig. 16 shows the arrangement according to Fig. 15, in a plan view,

Fig. 17 shows an arrangement of a first contact, a second contact, a cover and an electrical socket of the switching strip according to Fig. 13, in a perspective view,

Fig. 18 shows an arrangement of the cover and one of the electrical sockets of the switching strip according to Fig. 13, in a first perspective view,

Fig. 19 shows the arrangement according to Fig. 18, in a second perspective view.

Fig. 20 a fourth embodiment of the electrical socket, in a plan view on a rear side, Fig. 21 the electrical socket according to Fig. 20 with the wiring fixed to the socket, in a plan view on the rear side.

Fig. 1 to 5 show a first embodiment of an electrical socket 1.

As can be seen in particular in Fig. 1 to 3, the electrical socket 1 has a rigid circuit board 2 in the present case, the circuit board 2 having an input contact 3 and an output contact 4, the input contact 3 being electrically connectable to a current-conducting component 12a, 12b, as can be seen, for example, in Fig. 11 and 12.

The circuit board 2 has a conductive track 5, the input contact 3 and the output contact 4 being electrically connected to each other exclusively via the conductive track 5.

The conductive track 5 or at least a subsection of the conductive track 5 forms an overcurrent protection device which interrupts the electrical connection between the input contact 3 and the output contact 4 when an overcurrent occurs.

In order to prevent the formation of a flashover in the event of an overcurrent or at least to prevent a flashover that may occur from influencing the surroundings of the electrical socket 1, the entire conductive track 5 is hermetically sealed in the present case.

In the present case, the hermetic seal is achieved because the circuit board 2 is configured as a multi-layer circuit board and has two inner layers 7, 8, the entire conductive track 5 being formed between the two layers 7, 8.

In the present case, the input contact 3 and the output contact 4 are configured as through contacts 24 with a solder surface connected to the respective through contact 24.

As shown in Fig. 5, the socket 1 has a spring contact 10 for contacting the current-carrying component 12a, 12b, the spring contact 10 being electrically and mechanically connected to the input contact 3, in this case the spring contact 10 being welded to the soldering surface of the input contact 3. For the sake of clarity of representation, the spring contact 10 is not shown in Figs. 1 and 2.

In the present case, the spring contact 10 is formed by a curved strip made of an elastic and electrically conductive material, the spring contact 10 having a first arm 28 and a second arm 29, the first arm 28 being connected to the input contact 3 and the second arm 29 being formed as a free arm, the free second arm 29 being mechanically supported on the circuit board 2. Between the two arms 28, 29 a contact section 30 is formed, the contact section 30 being arranged at a distance from the circuit board 2. In the present case, the output contact 4 is formed on a side of the circuit board 2 remote from the input contact 3 or the spring contact 10, the electrical socket 1 having a connection device in the form of a terminal 33, the device being electrically connected to the output contact 4. In the present case, the terminal 33 is fixedly connected to the circuit board 22, namely soldered to the terminal 33. the soldering surface of the output contact 4. Using the connecting device, a releasable electrical connection can be established with the output contact 4, for which a cable or an electrical conductor of a wiring 19 can be inserted into the terminal 33.

Figs. 9 to 12 show an arrangement of a switching strip 13 and six electrical sockets 1 of the first embodiment.

As can be seen especially in the exploded view in Fig. 10, the switching strip 13 has an upper part 18, a cover 31 being mounted on this upper part 18, which serves to accommodate electrical fuses 25. In the present case, the switching strip 13 shown in Figs. 9 to 12 is an NH switching strip.

The cover 31 is slidably mounted on the upper part 18 by means of a switching lever 32 which enables the cover 31 to be moved relative to the upper part 18 in order to insert the electrical fuses 25 into the contacts 12a, 12b provided for this purpose. These contacts 12a, 12b are in turn configured in a support part 17 of the switching strip 13, the support part 17 being in this case also able to be mechanically and electrically connected to a busbar system. The contacts 12a, 12b are in turn each connected to a busbar 23.

The switching strip 13 also has a cover 15, 16 for covering the exposed contacts 12a, 12b, the cover 15, 16 being formed in this case by six caps 16 and a support structure 15, the support structure 15 serving to store the caps 16, the covers 16 being able to be placed on the support structure 15, in this case snapped into place. The support structure 15 can in turn be snapped into the support part 17.

The six electrical sockets 1 and the wiring 19 connected to the electrical sockets 1 are arranged in the present case in the cover 15, 16, specifically arranged in the supporting structure 15 of the cover 15, 16. In order to store or fix the respective electrical socket 1, the supporting structure 15 has a plurality of counter-fixing structures 14b, the respective counter-fixing structure 14b being formed by two parallel sections of the supporting structure 15, the circuit board 2 being insertable between the two sections and thus into the counter-structure 14b. In this respect, the circuit board 2 or a subsection of the circuit board 2 forms a fixing structure 14a corresponding to the counter-fixing structure 14b.

In the present case, the circuit board 2 is aligned parallel to the respective contact 12a, 12b and parallel to an insertion direction of the caps 16 in the supporting structure 15 and parallel to an insertion direction of the supporting structure 15 in the carrier part 17.

In the present case, the electrical socket 1 is arranged between the cap 16 and the supporting structure 15, thus arranged within a covered space for the corresponding contact 12a, 12b, which is defined by the cap 16 and the supporting structure 15.

With regard to the assembly of the switching strip 13, the arrangement of the supporting structure 15, the cap 16 and the socket 1 together with the wiring 19 is particularly advantageous, since the components cap 16, supporting structure 15, socket 1, wiring 19 can be pre-assembled and then connected as a pre-assembled unit to the carrier part 17, the pre-assembled unit being pushed onto the contacts 12a, 12b of the carrier part 17 during connection, the spring contact 10 coming into contact with the contact 12a, 12b during the insertion process. When the spring contact 10 comes into contact with the electrical contact 12a, 12b, the contact is made against the spring force of the spring contact 10, so that a particularly secure contact between the spring contact 10 and the electrical contact 12a, 12b is ensured and, on the other hand, the spring contact 10 allows the cover 15, 16 to be inserted without blocking it.

Figs. 6 to 8 show a second embodiment of the electrical socket 1. This embodiment differs from the first embodiment essentially in that the conductive track 5 has a narrowing section 6 in an area between the input contact 3 and the output contact 4, the narrowing section 6 having a reduced cross-section compared to the sections of the conductive track 5 adjacent to the narrowing section 6. This narrowing section 6 forms the overcurrent protection device, which interrupts the electrical connection between the input contact 3 and the output contact 4 when an overcurrent occurs.

Furthermore, the second embodiment has no terminal. In this case, the wiring 19 is soldered directly to the soldering surface of the output contact 4.

Figs. 13 to 19 show a third embodiment of the electrical outlet 1 or a further embodiment of an arrangement of an electrical outlet 1 of the third embodiment and a current distribution component.

The current distribution component is also a switching strip 13, the switching strip 13 differing from the switching strip 13 shown in Figs. 9 to 12 in particular in the configuration of the electrical contacts 12a, 12b and the cover 15, 16. Furthermore, the arrangement shown in Figs. 13 to 19 is further differentiated by the electrical socket 1 and the arrangement of this electrical socket 1 on the switching strip 13 or by the fixing of the electrical socket 1 on the switching strip 13, more specifically by the type of fixing of the electrical socket 1 on the cover, in this case the cap 16.

In the present case, the cover of the switching strip is formed solely by an arrangement of three pairs of covers 16 which are fixedly connected to each other, so that in the arrangement shown in Fig. 13 to 19, a pair of caps 16 is provided for each pair of contacts 12a, 12b.

The electrical socket 1 as such differs from the electrical socket 1 of the first and second embodiments essentially in that the circuit board 2 has a recess 11 in the form of a through opening completely enclosed by the circuit board 2. This recess 11 serves to arrange the first contact 12a or the second contact 12b, the electrical socket 1 in turn having a spring contact 10 adjacent to the recess 11, the spring contact 10 being in contact with the electrical contact 12a, 12b. This can be seen in particular in Fig. 15.

The respective contact 12a, 12b has a first section 26 for receiving the electric fuse 25 or for receiving the disconnecting blade. Furthermore, the respective contact 12a, 12b has a second section 27 connected to an electrical input or current output of the switching strip 13, the spring contact 10 of the electrical socket 1 contacting the corresponding contact 12a, 12b in the area of the second section 27.

In the present case, the circuit board 2 is aligned perpendicular to the contact 12a, 12b or perpendicular to a fixing direction of the cap 16 on the contact 12a, 12b, the cap 16 having an opening for inserting the contact 12a, 12b on the side facing the carrier part 17, the circuit board 2 being arranged in the region of the opening of the cap 16.

In the present case, the circuit board 2 essentially forms a bottom section of the respective cap 16. The circuit board 2 has a fixing structure 14a in the form of two projections 14a. The respective cap 16 has counter-fixing structures 14b in the form of through openings corresponding to these fixing structures 14a. The interaction of the fixing structure 14a and the counter-fixing structure 14b can be seen in particular in Figs. 18 and 19.

The third exemplary embodiment of the electrical socket 1 has a connecting device in the form of a plug 9 for inserting a corresponding connecting device in the form of a socket 22 of the wiring 19. In the present case, in the arrangement shown in Fig. 13, the electrical sockets 1 are electrically connected to one another via the wiring 19, the wiring 19 in turn being connected to the measuring and/or evaluation electronics 20. For reasons of clarity, the connector 9 is not shown in Fig. 15.

In the present case, the electrical sockets 1 serve to supply power to the measuring and/or evaluation electronics 20, the measuring and/or evaluation electronics 20 in turn receiving a measurement signal from the current transformers 21. The measuring and/or evaluation electronics 20 thus serve to measure the current flowing through the switching strip 13, for example to determine the energy consumption.

Figs. 20 to 21 show a fourth embodiment of the electrical socket 1, which essentially corresponds to the third embodiment, this fourth embodiment having two connectors 9 for connecting to a corresponding socket 22 of the wiring 19.

List of reference symbols

1 electrical outlet

2 circuit board

3 input contact

4 output contact

5 Conductive track

6 narrowing section

7 layer

8 layer

9 connector

10 spring contact

11 notch

12a first contact

12b second contact

13 switching strip

14a fixing structure

14b counterfixation structure

15 Roof supporting structure

16 hood

17 carrier piece

18 top

19 wiring

20 measurement and/or evaluation electronics

21 power converter

22 plug

23 busbar

24 contact pass

25 electric fuse

26 first section

27 second section

28 first arm

29 second arm

30 contact section

31 cover

32 shift lever

33 terminal

Claims (14)

1. Arrangement of a current distribution component and an electrical socket (1) with an overcurrent protection device, for taking a voltage applied to a current-carrying component (12a, 12b) in order to measure the electrical voltage applied to the current-carrying component (12a, 12b) and/or in order to supply power to an electronic component, in particular in order to supply power to measurement and/or evaluation electronics (20), wherein the electrical socket (1) has a circuit board (2), the circuit board (2) having an input contact (3) and an output contact (4), the input contact (3) being electrically connectable to the current-carrying component (12a, 12b), wherein the circuit board (2) has a conductive track (5), the input contact (3) and the output contact (4) being electrically connected to each other by means of the conductive track (5), wherein at least a subsection of the conductive track (5) forms the overcurrent protection device, at least this subsection of the conductive track (5) being hermetically sealed, and 1. The current distribution component is designed as a switchable or non-switchable power strip, the current distribution component having a first exposed current-conducting component in the form of a first exposed contact and a second exposed current-conducting component in the form of a second exposed contact, the first current-conducting component being connected or connectable to a current input and the second current-conducting component to a current output, the first current-conducting component and the second current-conducting component being arranged spatially at a distance and serving to accommodate an electric fuse, the electrical socket being arranged on the current distribution component, the input contact of the electrical socket being electrically connected to the first current-conducting component or the second current-conducting component, the electrical socket having a spring contact. to contact the current-carrying component (12a, 12b), wherein the spring contact (10) is electrically connected to the input contact (3). 2. Arrangement according to claim 1, characterized in that the entire conductive track (5) forms the overcurrent protection device, the entire conductive track (5) being hermetically sealed. 3. Arrangement according to claim 1 or 2, characterized in that the electrical connection between the input contact (3) and the output contact (4) is formed exclusively via the conductive track (5). 4. Arrangement according to one of claims 1 to 3, characterized in that the conductive track (5) has a narrowing section (6) in a region between the input contact (3) and the output contact (4) with a reduced cross section with respect to the sections of the conductive track (5) adjacent to the narrowing section (6), the narrowing section forming the overcurrent protection device, the narrowing section (6) being hermetically sealed. 5. Arrangement according to one of claims 1 to 4, characterized in that the circuit board (2) has at least two layers (7, 8), wherein at least the subsection forming the overcurrent protection device, in particular the entire conductive track (5), is configured between at least two layers (7, 8), in particular the circuit board (2) is configured as a multi-layer circuit board, and the two layers (7, 8) are inner layers of the multi-layer circuit board. 6. Arrangement according to one of claims 1 to 5, characterized in that the electrical socket (1) has a connecting device, the connecting device being electrically connected to the input contact (3), a releasable electrical connection being established with the input contact (3) by means of the connecting device, or where the connecting device is electrically connected to the output contact (4), a releasable electrical connection being able to be established with the output contact (4) by means of the connecting device. 7. Arrangement according to claim 6, characterized in that the connection device is configured as a terminal (33) for receiving an electrical cable and/or an electrical conductor. 8. Arrangement according to one of claims 6 or 7, characterised in that the connecting device can be releasably connected to a counter-device corresponding to the connecting device, in particular the connecting device as a plug or as a connector (9) for inserting a corresponding connector or for insertion into a corresponding socket (22). 9. Arrangement according to one of claims 1 to 8, characterized in that the spring contact (10) is fixedly connected to the circuit board (2). 10. Arrangement according to one of claims 1 to 9, characterized in that the output contact (4) is formed on a side of the circuit board (2) remote from the input contact (3) and/or the output contact (4) is accessible from the side of the circuit board (2) remote from the spring contact (10). 11. Arrangement according to one of claims 1 to 10, characterized in that the circuit board (2) has a recess (11) for arranging the current-conducting component (12a, 12b), in particular the spring contact (10) is arranged adjacent to the recess (11). 12. Arrangement according to one of claims 1 to 11, characterised in that the electrical socket (1) has a fixing structure (14a), the electrical socket (1) being fixed to the current-conducting component (12a, 12b) or to one of the current-conducting components (12a, 12b), the current-conducting component (12a, 12b) or the component having a counter-fixing structure (14b) corresponding to the fixing structure (14a). 13. Arrangement according to one of claims 1 to 12, wherein the current distribution component has a cover (15, 16) for covering the first contact (12a) and/or the second contact (12b), the cover (15, 16) being connectable to a carrier part (17) of the current distribution component having contacts (12a, 12b), in particular the cover (15, 16) can be inserted into the carrier part (17), the electrical socket (1) having a fixing structure (14a) and the cover (15, 16) having a counter-fixing structure (14b) corresponding to the fixing structure (14a), the electrical socket (1) being fixed to the cover (15, 16). 14. Arrangement according to one of claims 1 to 13, wherein the circuit board (2) has a recess (11) for arranging the first current-conducting component (12a) or the second current-conducting component (12b), wherein the electrical socket (1) has a spring contact (10) adjacent to the recess (11), the spring contact (10) contacting the first current-conducting component (12a) or the second current-conducting component (12b).