DE202013100297U1 - Device connection system for kitchen appliances - Google Patents

Abstract

Device connection system for kitchen appliances between a kitchen appliance (1) and a building electrical installation (4) by means of a device connection line (2), the mains side a Schukostecker (3) for the junction box of the building electrical installation and device side an angle device box (5), wherein the angle device box (5) a in the rear wall (8) of the kitchen appliance (1) arranged device connector (7) is contacted by a plug-in operation, characterized in that the device connector (7) has a quasi-rectangular connector housing (25), at the outer edge of a collar (24) is formed as a stop on the outer rear wall (8) of the kitchen appliance (1) that in the walls of at least two opposite sides of the plug housing (25) each have a movable tab (23) is arranged, formed on the outside of a Außenverrastnase (16) is that a run-up slope and a blocking surface to the permanent Anord NEN of the appliance plug (7) in the rear wall (8) of the kitchen appliance (1), that at each tab (23) in the direction of a quasi rectangular Stecksteckraumes (22) of the plug housing (25) has a Innenverrastnase ...

Description

The invention relates to a device connection system for kitchen appliances according to the preamble of patent claim 1.

State of the art

Kitchen appliances such as electric cookers, ovens or dishwashers require electrical energy for their function.

To ensure energy supply, most devices available on the market must be connected by the electrician to the building electrical installation. This is necessary because these devices only have a device connection cable which is connected to the building electrical installation at the feed-in point via a device connection box.

The connection is realized by the electrician, with the aid of assembly tool and means for the user of the kitchen appliance in any case an additional installation effort.

The particular problem is usually that in the execution of the electrical installation in the kitchen, the type and location of the kitchen appliances used are unknown. This also applies to later redesigns or -möblierungen the kitchen.

Since the electrical connection boxes for the basic electrical installation necessary for connecting the kitchen appliances represent additional installation components and services, they can not be installed in stock for aesthetic-aesthetic and economical reasons.

Thus, they are often in an inappropriate place and form a nuisance for the design, use and for later possibly necessary redesign of the kitchen.

In the publication EP 0762546 B1 a junction box for electrical appliances is described. This junction box is the connection to the building electrical installation. It has a socket mounted on a side wall with complementary plug. The appliance connection cable for the built-in kitchen appliance is connected to this.

In this respect, the presented system is a partial solution of the problem described, but it does not solve completely, as even with this solution, an electrician must establish the connection between the built-in device and plug. Furthermore, the modified device connection box must be provided on site. However, as described, this considerably restricts the flexibility of the kitchen equipment.

Individual kitchen appliances of modern design use modular connection systems for energy supply. These consist of a plug system mounted in the device as a connection point to the device's internal wiring and a device connection cable with socket and Schuko plug for connection to the building electrical installation. This connection concept is a major disadvantage of the connection of kitchen appliances according to the prior art and in the document EP 0762546 B1 fixed system. It is thereby possible to connect the kitchen appliance without additional, to be realized by a skilled electrician, installation work by plug to the building electrical installation.

In the pamphlets DE 10 2005 029 384 A1 . DE 10 2008 009 142 A1 . DE 10 2007 057 335 A1 and DE 10 2005 040 241 A1 Such modular connection systems for making the electrical connection between a socket of the building electrical installation and a kitchen electrical appliance are described.

This advantage for the user of the kitchen appliances according to the solutions described requires for the manufacturers of this significant manufacturing and cost problems.

So are the in the publication DE 10 2007 057 335 A1 and DE 10 2005 040 241 A1 described solution only for contacting the device internal wiring on a printed circuit, as this is a displacement of the plug contacts when plugging the can is avoided.

The in the pamphlets DE 10 2005 029 384 A1 and DE 10 2008 009 142 A1 As a result of their design, the solutions described are strongly limited to special applications.

task

It is therefore the object of the present invention to propose a low-cost manufacturing device connection system for kitchen appliances. The proposed system should also allow the non-specialist without Mehrinstallationsaufwand a flexible, easy-to-use connection of kitchen appliances to the building electrical installation. Furthermore, it should provide the manufacturer of kitchen appliances a modular connection system for the device internal wiring, which ensures a cost-effective and secure electrical energy supply based on modern manufacturing processes.

This object is achieved by a device connection system for kitchen appliances having the features of patent claim 1. An advantageous embodiment of the invention is specified in the dependent claims 2 to 5.

The solution of this object by the invention is characterized by a corresponding device connector plug device system, which is installed on the outer boundary surfaces or inside the kitchen appliance.

The device connector of this connection system has on its side facing away from the at least three plug contacts specific electrical connection elements for safe connection of the device internal wiring.

These are designed in such a way that the internal wiring is connected by means of plug contacts, crimp contacts, insulation displacement contacts, spring-cage contacts or other forms of contact.

The at least three plug contacts are pronounced in the form that the center contact for the protective conductor connection is designed to be the longest. This design measure is intended to ensure that the protective conductor is disconnected after the active conductors when the device connector plug system socket system is disconnected.

The protective conductor contact can be made on the inside of the device in various variations, so that the ground potential can be contacted by means of flexible pigtail or by means of a solid ground strap to the device housing. One possible variation is the embodiment of the protective contact with at least one blade terminal contact and / or a crimp on the inside of the device. At this a grounding wire is infected and / or struck, which is plugged at the other end by means of flat plug contact on a housing tab.

Another variation is offered by the embodiment of the earthing contact as a solid earthing strap, which is connected to the housing by means of at least one screw.

The device connection plug corresponds with the device socket of the device connection system in such a way that mechanical coding ensures that both are always connected in line with the system and in the correct conductor sequence.

The electrical connection between the device connection plug and the angle box is designed in such a way that each plug contact is grasped by a spring contact of the angle box.

The spring contacts of the angle box are preferably connected by means of crimping or ultrasonic welding to the electrical connecting cable with safety plug.

The angle box, cables, and the joints between them may be housed in a molded plastic housing.

The angle device socket of the device connection system is connected via the electrical connection cable with a Schukostecker in the form that it is safely supplied with electrical energy when plugging this into a Schukosteckdose the building electrical installation. If the device connector plug system system is installed in a breakthrough of the outer boundary surface of the kitchen appliance, it is provided on at least one contact surface of the plug housing with this Außenverrastnase. This is pressed during installation of the plug of the contact surface in the connector interior and goes back to its original position after reaching the Einbauendposition. Through this mechanism, the connector housing is fixed in the device housing.

Alternatively, a plug fixation may be provided by means of screw when installing the device connector plug system in the interior of the device.

The device connection system can be varied in such a way that when the kitchen appliance is delivered, the device connection plug and the angle box are plugged in or disconnected.

When inserting the angle device socket into the device connector plug at least one Innenverrastnase the device connector plug is pressed out of the way in that the angle box can be easily brought into their Endsteckposition. If this is achieved, the Innenverrastnase engages in a Gegenkontour, called Einrastaussparung, the Winkelgerätedose, so that it can only be separated from the inside of the device and only with the aid of tools from the plug. Practically, this can only be achieved by a service technician.

These measures ensure the utmost security of supply of the kitchen appliance.

• – Die Verbindung der Küchengeräte mit der Gebäudeelektroinstallation kann flexibel und ohne Nachinstallationsaufwand auch von jedem Nichtelektrofachmann realisiert werden.
• – Die Verbindung zwischen der Winkelgerätedose an der Anschlussleitung mit dem Schukostecker und dem Geräteanschlussstecker des Gerätes ist nach dem Stecken nur mit Werkzeug und nur von der Geräteinnenseite aus lösbar und bietet damit ein Höchstmaß an Versorgungssicherheit.
• – Bei Lösung der Verbindung zwischen Dose und Stecker trennen zuerst die stromführenden Leiter und erst zuletzt der Schutzleiter, dies gewährleistet ein Maximum an Personenschutz.
• – Durch die auch durch einen Nichtfachmann steckbare Verbindung zwischen Geräteanschlussstecker am Gerät und Winkelgerätedose der Versorgungsleitung kann bei der Fertigung des Küchengerätes ein automatischer Prüfzyklus mittels Prüfadapter realisiert werden.
• – Durch die Fixierungsmöglichkeit des Geräteanschlusssteckers in der Außenwand des Gerätes über die Außenrastnase, wird der Geräteanschlussstecker sicher arretiert, trotz vereinfachtem Montageprozess.
• – Durch Variationsmöglichkeit beim Kontaktierungssystem der Geräteinnenverdrahtung auf die Steckerkontakte können unterschiedlichste Geräte verschiedenster Hersteller angeschlossen werden.

The present invention has a number of advantages:

• - The connection of kitchen appliances with the building electrical installation can be implemented flexibly and without Nachinstallationsaufwand by any non-electrician.
• - The connection between the angle device socket on the connection cable with the Schuko plug and the device connection plug of the device can only be removed with a tool and only from the inside of the device after insertion, thus offering the highest level of supply reliability.
• - If the connection between the socket and the plug is disconnected, first disconnect the live conductors and finally the protective conductor, this ensures maximum personal protection.
• - By pluggable by a non-specialist connection between the device connector on the device and angle box of the supply line, an automatic test cycle can be realized by means of test adapter in the manufacture of the kitchen appliance.
• - Due to the possibility of fixing the device connection plug in the outer wall of the device via the outer snap-in nose, the device connection plug is securely locked, despite the simplified assembly process.
• - Due to the possibility of variation in the contacting system of the device's internal wiring to the plug contacts, a wide variety of devices from various manufacturers can be connected.

embodiment

In the following, the invention is based on the 1 to 8th explained in more detail. It shows:

1 a kitchen appliance 1 in the embodiment, oven.

2 Device connection system for kitchen appliances

3 a Schukostecker 3 for connecting the kitchen appliance to the building electrical installation 4 and a device connector-angle device docking system for connecting the device connection line 2 on the device internal wiring.

4 a device connector-angle device docking system for connecting the device connection line 2 with the internal wiring and the connection of the PE conductor via a protective conductor 12 with the back wall 8th of the kitchen appliance 1 ,

5 a device connector-angle device docking system for connecting the device connection line 2 with the internal wiring and the connection of the PE conductor via a solid grounding bracket 15 with the back wall 8th of the kitchen appliance 1 ,

6 a device connector 7 with plug contacts 20 , mechanical coding 19 and Innenverrastnasen 17 in front view with viewing direction of the plug contacts

7 an angular device can 5 and a can 6 with pliers contacts 21 and mechanical coding 18 in perspective view in the direction of the pliers contacts.

8th Sectional view (transverse to the contact surfaces) of plugged device connection plug 7 and angle box 5 ,

The 1 shows as an exemplary kitchen appliance 1 a bake tube, the attached device connection cable 2 whose other end is the Schukostecker 3 and the building electrical installation 4 , Shown is a simplified representation of the device connection system for kitchen appliances 1 in its interaction between energy consumer system kitchen appliance 1 , via the power transmission system device connection line 2 with safety plug 3 and energy supply system building electrical installation 4 ,

The 2 again shows the Schukostecker 3 with device connection cable 2 , whose other end with the Winkelgerätedose 5 is connected, in the correspondingly formed device connector 7 is plugged. The angle device can 5 can also be formed without bending. The device connection plug 7 is firmly in the back wall 8th of the kitchen appliance 1 and from the front of the kitchen appliance 8th from insoluble installed. On the back, ie in the interior of the kitchen appliance 1 , are on the device connection plug 7 the neutral conductor contact bridge 9 , the protective conductor contact bar 10 with the grounding strap 15 and the ladder contact bridge 11 arranged.

The device connection system for kitchen appliances in its interaction between the Schuko plug is shown in exploded form 3 , the device connection cable 2 , the angle device can 5 in the back wall 8th of the kitchen appliance 1 by means of external locking nose 16 fixed device connection plug 7 , the neutral conductor contact bar 9 for connecting the neutral conductor of the device internal wiring, the protective conductor contact bar 10 for connecting the protective conductor of the device's internal wiring and to the rear wall 8th of the kitchen appliance 1 connected grounding strap 15 ,

The 3 shows on the left the building electrical installation 4 , the Schukostecker 3 , the device connection cable 2 and on the right the device connection cable 2 , the angle box 5 , the device connector 7 which is in a corresponding opening of the back wall 8th of the kitchen appliance 1 firmly is used and by means of a federal 24 as well as in the 4 visible on the outside of the back wall 8th tight.

The 4 shows the device connection cable 2 , the angle box 5 , the back wall 8th of the kitchen appliance 1 , the device connector 7 with the connector housing 25 , The device connection plug 7 has a quasi rectangular connector housing 25 on, on the outer edge of a covenant 24 as a stop on the outer rear wall 8th of the kitchen appliance 1 is trained. In the walls of at least two opposite sides of the plug housing 25 is, as well as in 6 shown, one movable tab each 23 arranged on the outside of a Außenverrastnase 16 is formed. The external latching noses 16 have a run-in slope and a blocking surface for permanent placement of the device connector 7 in the back wall 8th of the kitchen appliance 1 on. This outside locking nose 16 is also a mirror image on the opposite side of the device connector 7 arranged as in the 6 and 8th seen. The device connection plug 7 points in the direction of the interior of the kitchen appliance 1 the neutral conductor contact land 9 , the protective earth contact bar 10 , the ladder contact bridge 11 , the protective conductor 12 , the insulated blade receptacle 13 and those on the back wall 8th operatively attached connecting lug 14 for the protective conductor 12 on.

In the illustration, a possible variant of the cost-effective connection of the protective conductor contact bar 10 via a grounded to this protective conductor 12 and an insulated blade receptacle 13 with the from the back wall 8th of the kitchen appliance 1 embossed connection lug 14 for the protective conductor 12 shown.

The 5 shows the device connection cable 2 , the angle box 5 , the back wall 8th of the kitchen appliance 1 , the device connector 7 , the tab visible here 23 with external locking nose 16 , the neutral conductor contact bar 9 , the protective earth contact bar 10 with the outside wall 8th operatively connected earthing bar 15 and the conductor contact bar 11 ,

The grounding strap 15 provides an alternative embodiment to 3 shown blade receptacle 13 and connecting lug 14 represents.

The 6 does not show that in the back wall 8th built-in device connector 7 , At every tab 23 in the direction of a quasi rectangular Stecksteckraumes 22 of the connector housing 25 is a Innenverrastnase 17 arranged, wherein the Innenverrastnasen 17 with the on the outer contour of a can 6 the angle device socket 5 arranged latching recesses 26 are formed correspondingly, as in 8th shown.

The raised Innenverrastnasen 17 protrudes into the area of the socket plug room 22 in and is in the middle of the plug socket space 22 arranged. This inside latch nose 17 point in the direction of the opening of the socket space 22 an inclined plane and in the direction of the end portion of the Stecksteckraumes 22 an area parallel to the bottom of the socket space 22 runs and as a counterpart to Einrastaussparung 26 the angle device socket 5 the indissoluble locking of the Winkelgerätedose 5 in the plug-in compartment 22 of the device connection plug 7 causes.

In the plug-in compartment 22 are the mechanical coding plug 19 and the plug contacts 20 arranged. Each of the three plug contacts 20 communicates with a contact land, namely the neutral conductor land 9 , the protective conductor contact bar 10 and the conductor contact bar 11 , Here is the plug contacts 20 the protective earth contact bar 10 longer than the other two plug contacts 20 educated.

The device connector shown 7 preferably has three plug contacts 20 which of the pliers spring contacts 21 the can 6 and thus the operational current carrying connection between building electrical installation 4 and the device's internal wiring.

The interaction of the device in the connector 7 pronounced Innenverrastnasen 17 and the at the can 6 the angle device socket 5 shaped latching recess 26 as insoluble positive locking prevent their separation and thus a separation of the kitchen appliance 1 from the building electrical installation 4 and thus secure the energy supply.

Through the in the device connector 7 molded mechanical coding 19 of the device connector 7 prevents reverse polarity and incorrect system coupling.

The 7 shows the Winkelgerätedose 5 with the integrated box 6 , with the mechanical coding box 18 and the pliers spring contacts 21 , The illustrated box 6 has three insertion openings into which the three pincer spring contacts 21 are embedded. This enclosure with plugged connection the three plug contacts 20 so firm that a very low-impedance current transition is realized.

The mechanical coding 18 the angle device socket 5 is the counterpart to the mechanical coding 19 of the device connector 7 ,

In the 8th is the assembled device connection plug 7 with the angle device box 5 shown. The illustration of the external latching noses is highlighted 16 through which the appliance plug 7 firmly locked in the back wall 8th (Outer wall) is arranged. The tin 6 the angle device socket 5 is in the socket plug room 22 plugged and by locking the Innenverrastnasen 17 in the respective corresponding latching recess 26 also locked and from the outside of the kitchen appliance 1 impossible to solve.

The device connection plug 7 is used in the assembly of kitchen appliances by the company 1 in the intended opening of the rear wall 8th plugged. The fixed locking of the device connection plug 7 with the back wall 8th takes place via the Außenverrastnasen 16 ,

To the customers becomes the kitchen appliance 1 with the separated device connection cable 2 that the Schukostecker 3 and the angle box 5 carries and connects, delivered.

The customer, who is usually a layman to connect electrical appliances, can now without consulting a professional, the device, so here the kitchen appliance 1 , connect. He just has to take the can 6 the angle device socket 5 in the socket space 22 of the device connector 7 stuck. The angle box locks 5 insoluble in the plug-in compartment 22 of the device connector 7 through the Innenverrastnasen 17 , Through this permanent locking the required safety of the device connection is given. Subsequently, only the Schukostecker 3 into the can of the building installation 4 to stick. After that is the kitchen appliance 1 electrically ready.

LIST OF REFERENCE NUMBERS

1

kitchen appliance

2

Device connection cable

3

Safety plug

4

Building electrical installation

5

Angle appliance box

6

can

7

Appliance Outlet

8th

Rear wall of the kitchen appliance

9

Neutral contact web

10

Protective earth contact web

11

Head contact web

12

protective conductor

13

insulated blade receptacle

14

Connecting lug for protective conductor

15

grounding strap

16

Außenverrastnase

17

Innenverrastnase

18

mechanical coding box

19

mechanical coding plug

20

plug Contact

21

Pliers spring contact

22

Cans plug space

23

flap

24

Federation

25

plug housing

26

locking housing

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0762546 B1 [0008, 0010]
• DE 102005029384 A1 [0011, 0014]
• DE 102008009142 A1 [0011, 0014]
• DE 102007057335 A1 [0011, 0013]
• DE 102005040241 A1 [0011, 0013]

Claims (5)

Device connection system for kitchen appliances between a kitchen appliance ( 1 ) and a building electrical installation ( 4 ) by means of a device connection line ( 2 ), which has a Schuko plug ( 3 ) for the junction box of the building electrical installation and on the device side an angle box ( 5 ), wherein the angle device box ( 5 ) with one in the back wall ( 8th ) of the kitchen appliance ( 1 ) arranged device connector ( 7 ) is contactable by a plug-in operation, characterized in that the device connection plug ( 7 ) a quasi rectangular connector housing ( 25 ), on whose outer edge a collar ( 24 ) as a stop on the outer rear wall ( 8th ) of the kitchen appliance ( 1 ) is formed such that in the walls of at least two opposite sides of the plug housing ( 25 ) each have a movable tab ( 23 ) is arranged, on whose outer side an outer latching nose ( 16 ) is formed, which has a run-on slope and a blocking surface for permanent placement of the device plug ( 7 ) in the back wall ( 8th ) of the kitchen appliance ( 1 ), that at each tab ( 23 ) in the direction of a quasi rectangular Stecksteckraumes ( 22 ) of the plug housing ( 25 ) an inside latching nose ( 17 ) is arranged, wherein the Innenverrastnasen ( 17 ) with the on the outer contour of a can ( 6 ) of the angle device socket ( 5 ) arranged latching recesses ( 26 ) are formed correspondingly. Equipment connection system for kitchen appliances according to claim 1, characterized in that the Innenverrastnasen ( 17 ) raised against the wall surfaces of the plug socket space ( 22 ) are formed and in the plug socket ( 22 protrude) and in the middle of the Stecksteckraumes ( 22 ) on the tab ( 23 ) are arranged. Equipment connection system for kitchen appliances according to claim 1, characterized in that the Innenverrastnasen ( 17 ) in the direction of the opening of the Stecksteckraumes ( 22 ) an oblique plane and in the direction of the end portion of the Stecksteckraumes ( 22 ) have a surface which is parallel to the bottom of the Stecksteckraumes ( 22 ) runs. Equipment connection system for kitchen appliances according to claim 1, characterized in that a protective conductor contact bar ( 10 ) of the device connector ( 7 ) via a grounding strap ( 15 ) with the outer wall ( 8th ) is operatively connected. Device connection system for kitchen appliances according to claim 1, characterized in that only in a side wall of the plug housing ( 25 ) a movable tab ( 23 ) is arranged, on whose outer side an outer latching nose ( 16 ) and at the plug socket space ( 22 ) facing side a Innenverrastnase ( 17 ) is formed.

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