EP2924810A1 - Electrical connection with circuit board connector - Google Patents

Abstract

A socket (1) of an electrical plug-in connection (1, 2) has a socket housing (3) and at least one plug-in connection element fastened to the socket housing (3) which is formed with at least one plug connection element for connection to a respective board plug (2) the socket (1) is provided as part of a plug connection (1, 2) of a household appliance (H) and the plug connection element is an edge card plug (4). A plug connection (1, 2) for a household appliance (H) has a socket (1) and a plug inserted therein, wherein the plug is a board connector (2) whose contacts are formed at its socket-side end portion (22) by exposed conductor tracks and make contact with the edge card connector (4). A household appliance (H) has at least one socket for the at least technical data connection of an external electrical device (Z). A system (H, Z) comprises a household appliance with a socket (1) and at least one external electrical appliance (Z), which is coupled via the socket (1) with the household appliance (H) at least data technology.

Description

The invention relates to a socket of an electrical connector, comprising a socket housing and at least one fastened to the socket housing plug connection element, which plug connection element is designed for connection to a respective board connector. The invention also relates to a plug connection for a household appliance, comprising a socket and a plug inserted into the socket. The invention further relates to a household appliance, in particular cooking appliance, having at least one socket for the at least technical data connection of an external electrical device. The invention also relates to a household appliance, with such a socket. The invention also relates to a system comprising a household appliance with a socket and at least one external electrical device, which is coupled via the socket with the household appliance at least data technology.

For the modular construction of hobs or ovens, a plug connection is required, which allows subsequent connection of additional modules by the customer. The connector should meet the shock protection requirements of IEC-60335 and should be robust and cost effective. There are a variety of bulkhead bushings from different manufacturers on the market, but these are not enough to meet the requirements of IEC-60335 and / or are too expensive.

DE 1 089 838 B discloses a contact spring in a holder for contacting a sheet provided with sheet-lined insulating material, with a mounted in an insertion opening for the plate retaining member two-armed spring member which is able to embrace the plate edge on both sides resiliently, wherein one arm of the spring member in the vicinity of the insertion is held, the other arm, however, is exposed and an arm, preferably the supported arm, an inwardly directed, formed as a run-up track for the plate edge projection in the rest position of the spring member - an abutment located on the holding member abutment for the plate - in the insertion opening extends, while the other arm is provided with an inwardly directed contact-forming projection, which lies in the rest position of the spring part just outside the insertion opening. Also disclosed is a bracket for such contact springs, wherein a plurality of contact springs are combined to form a contact spring strip in a holding member. In this case, the retaining member may be formed as a chamber open on one side, in the bottom of the contact spring is anchored. In particular, multiple contact springs can be anchored in each chamber to form multiple contacts.

EP 0 667 651 B1 discloses a low insertion force electrical connector configured to connect conductors of a flat flexible circuit device having at least one conductor to a second circuit device, the connector comprising: a housing having a front conductor receiving opening and a bottom wall; a contact is mounted with a base in the housing, which is connected to the second circuit means and an elastic arm, wherein between the bottom wall and the elastic arm, a coupling portion is formed, which is in communication with the conductor receiving opening; the resilient arm, which may be placed in either a preloaded or unpressed condition, has a point of contact which may be located outside of electrical contact with the conductor in the biased position, thereby allowing the conductor to be inserted into the coupling region and the contact point can be electrically connected to the conductor in the un-energized state after the cable has been received with the conductor in the coupling region; an actuator is slidably received in the coupling portion between the bottom wall and the elastic arm and has a front part; the elastic contact arm has a cam surface; the front actuator part has a cam follower that can contact a protruding portion of the cam surface and urge the contact point from the conductor to the biased state when the actuator is further inserted into the coupling portion simultaneously with the conductors of the flat and elastic circuit element; which lies on a flat surface of the actuator; the cam follower slides from the providing portion onto a non-protruding portion of the cam surface to the unbiased position, thereby allowing the elastic arm to urge the contact point toward the conductor, thereby establishing an electrical connection therebetween.

It is the object of the present invention to overcome the disadvantages of the prior art at least partially, and in particular a particularly simple design, cost-manufacturable and electrically touch safe way of electrical connection at least for data transmission between a household appliance, in particular cooking appliance, and an attachable device, in particular additional module to provide.

This object is achieved according to the features of the independent claims. Preferred embodiments are in particular the dependent claims.

The object is achieved by a socket of an electrical plug connection, comprising a socket housing and at least one plug-in housing attached to the connector element, which is designed for connection to a respective board connector, wherein the socket is provided as part of a plug connection of a household appliance and the connector element a Randkartenstecker is.

This socket provides a robust and cost-effective plug-in connection for household appliances, which is easily usable by an end customer. The socket has only two parts, namely the socket housing and the edge card connector. The socket is e.g. in injection molding one-piece low-priced made of plastic. An edge card connector is also available at low cost in many variants on the market. The bush also provides a simple way of protection against contact, e.g. according to IEC-60335, as the part of the board connector inserted in the edge card connector is no longer accessible. The socket is particularly suitable for connecting at least one external module ("add-on module") or as a customer service interface for connecting e.g. a maintenance and / or diagnostic device having a matching board connector.

A "board connector" may in particular be understood as meaning a part of a plug connection which is constructed as or as a circuit board or printed circuit board with an electrically insulating substrate and conductor tracks provided thereon. Electrical contacts are typically through at an end portion of the circuit board formed exposed portions of the tracks. The conductor track sections intended for contacting with the edge card plug may in particular be designed as widened contact pads or contact fields. The board connector may be formed in a band-shaped or strip-shaped manner at least at its end region to be inserted into the socket (which may also be referred to below as the "socket-side" end region). He may thus have at its socket-side end region in particular a rectangular shape in plan view.

An "edge card plug" may, in particular, be understood as meaning a part of a plug connection that is complementary to the board plug into which the board plug for making the plug connection can be plugged. The edge card connector has electrical contacts, which contact at least a part of its conductor track sections when the board connector is inserted. The electrical contacts of the edge card connector may e.g. be designed as contact tongues or contact springs. The edge card plug in particular has a unilaterally open, slot-like receiving space for receiving the end region of the board connector. The edge card plug may hold the board connector in particular non-positively. An edge card plug is an easily executable and inexpensive plug. The edge card connector is used in particular as a connection to device-internal components or components.

In particular, the connector may represent a USB connection, a Firewire connection, a Lightning connection, an Ethernet connection, a serial connection, and so on.

It is an embodiment that the socket housing has a receiving area for receiving the edge card connector and a guide area for guiding the board connector to the edge card connector. The guide area is therefore connected upstream of the edge card plug, in particular in the insertion direction of the board connector, and guides it. The receiving area is in the following considered without limitation of generality as a rear area, which is not visible in particular when used by a user and, for example, can be sunk in the household appliance. The guidance area is hereinafter referred to as a front-side area without limitation of generality viewed, which is in the installed state facing a user. This embodiment has the advantage that the edge card plug can be positioned or aligned in a simple manner for the board connector to be inserted. In addition, the rear receiving area allows a simple electrical connection from the edge card connector to internal functional units of the household appliance (eg with a control device). The guide region has the further advantage that tilting or jamming of the board connector in the edge card connector in contrast, for example, to a direct use in the board connector is reliably prevented. The guide area also has the advantage that, in contrast to a direct use in an edge card connector unintentional release of the connector is made difficult by a lateral force application to the board connector, since the board connector is inserted deeper into the socket and the guide area in particular as a lateral stop can serve. This is particularly advantageous in a purely non-positive attachment of the board connector in the edge card connector. The fact that the board connector now has to be inserted deeper into the socket than when used directly in a edge card connector results in the further advantage that exposed electrical contacts or conductor track sections of the board connector can be concealed over a longer distance through the socket, which improves contact safety.

It is still an embodiment that the front-side guide area represents a stop for the edge card connector. This allows a particularly simple construction, e.g. because you can do without dedicated spacers. Also, such a distance between the edge card connector and the guide portion can be kept small.

It is a further embodiment that the rear receiving area and the front-side guide area are formed as adjacent sections, in particular a tubular portion of the female housing. The tubular portion causes an advantageous protected environment for the connector. The tubular portion may have in cross section in particular a rectangular outer wall, which is e.g. a compliant introduction of the edge card connector allowed.

It is yet another embodiment that the front-side guide region by means of two parallel to a longitudinal extension of the tubular portion and parallel formed walls (hereinafter referred to as "partitions" without limitation to the general public) is formed. As a result, a slot-like passage for the board connector can be formed in a simple manner. The mutually parallel alignment or arrangement of the partition walls prevents tilting of the socket-side end portion of the board connector when inserting or bending of the already inserted board connector. The dividing walls can be accommodated, for example, in the guide region of the tubular portion, in particular parallel to side walls of the tubular portion. It is a development that form the partitions with their rear-facing end faces or end edges contact surfaces and thus a stop with or for the edge card connector.

Alternatively or additionally, the guide area may have lateral slots ("guide slots") which guide the board connector, which projects laterally beyond the guide slots. The guide slots are aligned in the insertion direction.

It is a further development that the guide region in the region of its front opening has a widening to the outside or to the front. This facilitates attachment of the board connector for subsequent insertion into the socket. However, the guide area as a whole or over its entire length may be slightly widened. This may for example be achieved by a slightly oblique arrangement of the partitions to each other.

It is also an embodiment that the rear receiving area is designed for at least positive and / or positive fastening of the edge card connector. The edge card plug can therefore be accommodated by means of at least one clamping fit and / or latching in the rear receiving area. For a particularly secure housing, the edge card connector can additionally or alternatively be accommodated in the rearward receiving area by means of a material-locking attachment (for example by means of a bond). The positive attachment may be designed to be detachable or non-detachable. For latching, for example, a catch hook may be present at the rear receiving area.

It is also an embodiment that the socket housing has at least one locking element for locking attachment of the board connector. This prevents accidental high sliding in the socket or sliding out of the board connector from the socket. The latching may be made detachable or non-detachable.

The at least one latching element may be designed and arranged in particular for the latching attachment of the sinker plug at its side edge, which allows a particularly simple removal. It is a further development that the socket housing has at least one latching hook or latching tab projecting into the area of the board connector, which latching catch can engage in a corresponding latching recess in the board connector. The latching recess may be incorporated in a lateral latching, for example in a side edge or lateral longitudinal edge of the sinker plug.

It is also an embodiment that the female housing has at least one locking element for latching attachment to the household appliance. As a result, the socket itself can be easily attached to the household appliance. The latching may be made detachable or non-detachable.

In particular, the female housing may have an edge or flange extending laterally, for example, from a front edge of the guide area, which may be e.g. can serve to rest the female housing on the household appliance. The edge may in particular have a plate-like shape. From the edge, in the rearward direction, an insertion portion for inserting the female housing into an opening of the household appliance may depart. The insertion area serves for guidance and / or positioning, in particular for lateral positioning, of the socket housing in the opening of the household appliance.

It is a development that the insertion has at least one locking element for locking the female housing with the household appliance. This allows a particularly simple installation. It is a further development that the at least one latching element is a latching tab, which in the relaxed state projects laterally out of the lead-in area and can be pressed elastically into the lead-in area. It is still a development that in the edge at least one opening (hereinafter referred to without restriction of the generality as "lead-through opening"), which is located above a latching element, and which can be used for example for performing a tool for releasing a latching connection of this latching element is. The so releasable locking may be the locking of the socket housing with the household appliance and / or the locking of the board connector with the socket housing, in particular with its guide area.

The object is also achieved by a plug connection for a household appliance, comprising a socket and a plug inserted into the socket, wherein the socket is a socket as described above and the plug is a board connector whose contacts are formed at its socket-side end portion by exposed traces and make contact with the edge card connector. Such a connector can be formed analogous to the socket and gives the same advantages.

It is an embodiment that the exposed conductor tracks of the board connector are arranged at its socket-side end portion completely in the socket housing. This prevents a possibility of touching exposed printed conductors and thus meets high requirements for a touch safety.

It is still an embodiment that the otherwise exposed conductor tracks outside the socket housing are encapsulated by means of an electrically insulating sheath. This allows a touch-safe use of conventional circuit boards as a board connector. In particular, compliance with IEC-60335 is thus made possible in a simple manner. The use of the potting compound has the further advantage that it is possible to set a length of the bushing-side exposed regions of the strip conductors with high accuracy. In addition, the sheath can be adjusted in width, for example, to achieve a seal of the guide area and / or to ensure a predetermined breakdown safety.

It is a development that the sheath is a protective housing, for example, consist of plastic. The protective housing may be formed in one piece or in several parts. The protective housing may have an injection molded part.

It is a development that the sheath is a potting compound. This gives the advantage that the sheath can be provided particularly inexpensive. Also, the material of the potting compound can be chosen in many ways, for example, in terms of elasticity, tightness, opacity, mechanical resistance, electrical resistance, color, feel, etc. It is a development that the circuit board has been encapsulated at the desired sections with the potting compound ,

The object is also achieved by a household appliance, comprising at least one socket for at least data connection of an external electrical device, wherein the at least one socket is a socket as described above. The external electrical device may for example be an additional module to the household appliance.

In particular, the household appliance may be a large household appliance, in particular a food preparation appliance (e.g., a cooking appliance), a refrigerator (e.g., a refrigerator), a laundry care appliance (e.g., a washing machine and / or tumble dryer), or a dishwashing appliance (e.g., a dishwasher). The cooking appliance may, for example, have an oven and / or a hob.

The add-on module may e.g. an extractor hood or food for connection to a cooking appliance. By way of example, the additional module may also be a communication module, for example for wireless and / or wired communication of the household appliance, e.g. with a network. The network may inter alia be a local area network, for example for in-house communication, and / or may be an externally usable network, e.g. a WAN or the Internet.

An at least data-technical connection may be understood to mean a connection at least for the transmission of data, possibly also for the power supply.

It is an embodiment that the at least one bush is designed and arranged as a bulkhead bushing.

It is also a development that the board connector and the edge card connector are designed to prevent rotation, for example via a bar coding.

The object is further achieved by a system of a household appliance with a socket and at least one external electrical device, which is coupled via the socket with the household appliance at least data technology, wherein the household appliance is a household appliance as described above and with the external electrical device a plug connection enters, in which the exposed conductor tracks of the board connector are arranged at its socket-side end portion completely in the socket housing and sealed outside of the socket housing by means of an electrically insulating potting compound.

Fig.1

zeigt als Schrägansicht von einer rückwärtigen Position eine elektrische Steckverbindung mit einer Buchse und einem darin eingesteckten Platinenstecker;

Fig.2

zeigt ein Haushaltsgerät mit der Steckverbindung aus Fig.1 in einer ersten Seitenansicht;

Fig.3

zeigt das Haushaltsgerät mit der Steckverbindung aus Fig.1 in einer zweiten Seitenansicht, welche zu der ersten Seitenansicht um 90° gedreht ist;

Fig.4

zeigt das Haushaltsgerät mit der Steckverbindung aus Fig.1 in einer dritten Seitenansicht, welche zu der zweiten Seitenansicht um weitere 90° gedreht ist;

Fig.5

zeigt die Steckverbindung aus Fig.1 in einer Ansicht von einer rückwärtigen Position aus;

Fig.6

zeigt die Steckverbindung aus Fig.1 in einer Draufsicht von einer vorderseitigen Position aus;

Fig.7

zeigt die Steckverbindung aus Fig.1 als Schnittdarstellung in Seitenansicht in einer zu Fig. 3 um 180° gedrehten Ansicht;

Fig.8

zeigt die Steckverbindung aus Fig.1 als Schnittdarstellung in Seitenansicht in einer zu Fig. 2 analogen Ansicht; und

Fig.9

zeigt die Steckverbindung aus Fig.1 als Schnittdarstellung in einer Schrägansicht von einer vorderseitigen Position aus.

The above-described characteristics, features and advantages of this invention, as well as the manner in which they are achieved, will become clearer and more clearly understood in connection with the following schematic description of an embodiment which will be described in detail in conjunction with the drawings. In this case, the same or equivalent elements may be provided with the same reference numerals for clarity.

Fig.1

shows an oblique view from a rearward position of an electrical connector with a socket and a plug-in connector inserted therein;

Fig.2

shows a household appliance with the connector Fig.1 in a first side view;

Figure 3

shows the household appliance with the connector Fig.1 in a second side view, which is rotated by 90 ° to the first side view;

Figure 4

shows the household appliance with the connector Fig.1 in a third side view, which is rotated to the second side view by a further 90 °;

Figure 5

shows the plug connection Fig.1 in a view from a rearward position;

Figure 6

shows the plug connection Fig.1 in a plan view from a front side position;

Figure 7

shows the plug connection Fig.1 as a sectional view in side view in a too Fig. 3 rotated by 180 ° view;

Figure 8

shows the plug connection Fig.1 as a sectional view in side view in a too Fig. 2 analog view; and

Figure 9

shows the plug connection Fig.1 as a sectional view in an oblique view from a front-side position.

Fig.1 shows an electrical connector 1, 2 for a household appliance H. The connector 1, 2 may represent, for example, a USB connection. Fig.2 shows a detail of a household appliance H with the connector 1, 2 in a first side view. Figure 3 shows the household appliance H with the connector 1, 2 in a second side view, which is rotated to the first side view by 90 ° to a located in the image plane, vertically oriented axis of rotation (o. Fig.). Figure 4 shows the household appliance H with the connector 1, 2 in a third side view, which is rotated to the second side view by a further 90 °. The household appliance H may for example be a cooking appliance, for example an oven and / or a hob. The part of the household appliance H shown here may for example be a housing wall. Figure 5 shows the connector 1, 2 in a view from a rearward position. Figure 6 shows the connector 1, 2 in a plan view from a front-side position.

The connector 1, 2 has a socket 1 and a connector plugged into the socket 1 in the form of a three-pin board connector 2 here. The bushing 1 has a bushing housing 3, which consists for example of plastic and has been produced in one piece by an injection molding process. On the socket housing 3, a connector element in the form of a edge card connector 4 is attached. The board connector 2 is inserted into the edge card connector 4, in particular purely non-positively.

The socket housing 3 has a rear receiving area 5 for receiving the edge card connector 4 and a front-side guide area 6 for guiding the board connector 2 to the edge card connector 4. The guide portion 6 is thus upstream of the edge card connector 4 in the insertion direction of the board connector 2 and guides it. The edge card connector 4 has a slot-like receiving space 22 on its front side facing the guide area 6 (see FIG Figure 7 ) to receive the Board connector 2 and a socket-side end portion thereof. The edge card connector 4 is used in particular as an electrical connection to internal components or components of the household appliance H and has three terminals 7 for attaching corresponding device-internal cable (o. Fig.) On.

The rear receiving portion 5 and the front side guide portion 6 are formed as adjoining portions of a tubular portion 5, 6 of the female housing 1. The tubular portion 5, 6 has a cross-sectionally basically rectangular outer wall 8. The shape of the outer wall 8 allows a simple guided insertion of the edge card connector 4. The outer wall 8 has at the receiving area 5 a side recess 8a for free access to the terminals 7. The receiving area 5 has at an opposite section of the outer wall 8 an elastic latching hooks 9, the hook or latching lug 10 protrudes at a lower edge of the receiving area 5 in this and the edge card 4 stops in the receiving area 5 latching.

The socket housing 3 here has a plate-shaped edge 11 which projects laterally from a front edge of the guide area 6. From the edge 11, an insertion area 12 for insertion of the socket housing 3 into an opening of the household appliance H is in the rearward direction. The socket 1 can serve as a bulkhead cover.

The insertion region 12 has here three locking elements 13 for the permanent locking of the female housing 3 with the household appliance H. The latching elements 13 are formed as latching tabs, which protrude laterally in the relaxed state from the insertion region 12 and, for. in an insertion curtain of the socket 1 in an opening of the household appliance H elastic in the insertion region 12 can be pressed. In the relaxed state, the housing wall of the household appliance H is held between the edge 11 and the latching elements 13.

Also, the board connector 2 is held locked in the socket 1, by means of two latching hooks 15 of the female housing 3. The latching hooks 15 are arranged laterally of the board connector 2 and can in associated latching recesses 16 in the Side edges 17 intervene. For this engagement, the guide portion has two lateral guide slots 18, in which the board connector 2 can slide outwardly projecting. The guide slots 18 can also serve a guide of the board connector 2. The latching hooks 15 have a rounded nose, so that the board connector 2 can be released again when given a sufficiently strong tensile force.

Figure 7 shows the connector 1, 2 in side view as a sectional longitudinal view through the board connector 2 in one Fig. 3 180 ° rotated view. In the tubular portion 5, 6 are two parallel to a longitudinal extension of the tubular portion 5, 6 aligned partitions 20. The partitions 20 form a slot-like receiving space 22 for receiving and guiding the board connector 2. With their rear-facing end faces 21 form the partitions 20 contact surfaces and thus also a stop for the edge card connector. 4

The section of the board connector 2 shown is cast with an electrically insulating potting compound 24 except for a socket-side end region 23 introduced into the receiving space 22. Thereby a touch protection, e.g. according to IEC-60335, since exposed electrical contacts or trace sections of the board connector 2 are now only within the socket 1 and are covered by this. The potting compound 24 is so thick that it covers the receiving space 22 and possibly even seals, e.g. to dust and / or vapors (e.g., fumes).

The board connector 2 may here serve as a connection element of an additional device or additional module Z, which receives data from the household appliance H via the plug connection 1, 2 or exchanges it bidirectionally.

Figure 8 shows the connector 1, 2 as a sectional view in side view in one Fig. 2 analog view. The cutting plane runs here parallel to the board connector 2 through the tubular portion 5, 6. Figure 9 shows the cut connector 1, 2 from Figure 8 in an oblique view from a front-side position.

Of course, the present invention is not limited to the embodiment shown.

Generally, "on", "an", etc. may be taken to mean a singular or a plurality, in particular in the sense of "at least one" or "one or more" etc., unless this is explicitly excluded, e.g. by the expression "exactly one", etc.

Also, a number may include exactly the specified number as well as a usual tolerance range, as long as this is not explicitly excluded.

LIST OF REFERENCE NUMBERS

1

Rifle

2

PCB connector

3

socket housing

4

Edge card connectors

5

Rearward reception area

6

Front guide area

7

terminal

8th

outer wall

8a

Recess in the outer wall

9

latch hook

10

Latch of the latching hook

11

Plate-shaped edge

12

insertion

13

locking element

15

latch hook

16

engaging recess

17

margin

18

guide slot

20

partition wall

21

face

22

Slot-like reception room

23

Socket end area

24

potting compound

H

household appliance

Z

attachment

Claims (13)

Socket (1) of an electrical plug connection (1, 2), comprising a socket housing (3) and at least one plug connection element fastened to the socket housing (3), - Which is formed at least one plug connection element for connection to a respective board connector (2),
characterized in that - The socket (1) as a part of a plug connection (1, 2) of a household appliance (H) is provided and - The connector element is an edge card connector (4). Socket (1) according to claim 1, characterized in that the socket housing (3) - A rear receiving area (5) for receiving the edge card connector (4) and - Has a front-side guide portion (6) for guiding the board connector (2) to the edge card connector (4). Socket (1) according to claim 2, characterized in that the front-side guide region (6) constitutes a stop (21) for the edge card connector (4). Socket (1) according to one of claims 2 to 3, characterized in that the rear receiving area (5) and the front-side guide area (6) are formed as adjoining portions of a tubular portion (5, 6) of the female housing (3). Socket (1) according to claim 4, characterized in that the front-side guide region (6) by means of two parallel to a longitudinal extent of the tubular portion (5, 6) and aligned parallel partition walls (20) is formed. Socket (1) according to one of claims 2 to 4, characterized in that the rear receiving area (5) for at least frictional attachment of the edge card connector (4) is formed. Socket (1) according to one of the preceding claims, characterized in that the socket housing (3) has at least one latching element (15) for latching attachment of the board connector (2) on its side edge (17). Socket (1) according to one of the preceding claims, characterized in that the socket housing (3) has at least one latching element (13) for latching attachment to the household appliance. Plug connection (1, 2) for a domestic appliance (H), comprising a socket (1) and a plug inserted into the socket (1), characterized in that - The socket (1) is a socket (1) according to one of the preceding claims and - The plug is a board connector (2), whose contacts are formed at its socket-side end portion (22) by exposed traces and engage in the edge card connector (4) contacting. Plug connection (1, 2) according to claim 9, characterized in that the exposed conductor tracks of the printed circuit board connector (2) at its socket-side end portion (22) are arranged completely in the socket housing (3) and outside of the socket housing (3) by means of an electrically insulating sheath , in particular potting compound (24), are surrounded. Domestic appliance (H), comprising at least one socket for the at least technical data connection of an external electrical device (Z), characterized in that the socket is a socket (1) according to one of claims 1 to 8. Domestic appliance (H) according to claim 11, characterized in that the at least one bush (1) is designed and arranged as a bulkhead bushing. System (H, Z), comprising a household appliance with a socket (1) and at least one external electrical device (Z), which is coupled via the socket (1) with the household appliance (H) at least data technology, characterized in that the household appliance a domestic appliance (H) according to one of claims 11 or 12 and with the external electrical device (Z) a plug connection (1, 2) according to claim 10 received.

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