EP0957661B1 - Use of an electric cooking plate in an electric range and electric range - Google Patents

Description

The invention relates to the use of an electric hotplate in one Electric stove with several electric hot plates with a hotplate body, a lower cover plate and a connector for electrical Connection of the hotplate, the connector on the hotplate body or the cover plate is attached. Furthermore concerns the invention an electric cooker.

An electric hotplate of this type is known for example from DE-OS 33 01 219. A positioning part contains a welded connection between a connection of the heating device of the hotplate and one flexible connecting cable for power supply or hotplate control is led. The positioning part should be the position of the Fix connections and the connecting wires forming them and a prevent mutual contact. The welds between a connecting line and a connecting wire are inside each of the positioning part arranged while a weld between the rigid connecting wire and a connecting cable outside of the positioning part.

From EP-A-0 473 986 it is known to connect a hotplate by means of so-called ferrules. Thereby connecting cables with an exposed end to a connecting wire welded, which represents a connecting line of the hotplate. On quick establishment or loosening of this weld is not possible.

TASK AND SOLUTION

It is an object of the invention, an aforementioned use and a To create electric stove that are very easy to connect, being at the final assembly of the electric hotplate is easy to carry out and Connection is safe and very easy to install.

This object is solved by the features of claims 1 and 13. In this way, the connection between Electric hotplate and hotplate control, in an electric stove or a hob thanks to a quick connection done directly on the hotplate, which is both time-saving and safe is feasible.

There are advantages in the case of a subsequent exchange a defective electric hotplate of an electric cooker or hob, because in such a case weld connections are very difficult can be made at the hotplate connections as well as the possible combination of connecting lines Wiring harnesses or the like, which are brought directly to the hot plates time-consuming re-laying of some of these cables can be saved can. The plug connections on the connecting lines can be made by the manufacturer down to the ones under the built-in electric hot plates Area led and may be partially fixed there, so that both Final assembly as individual hotplates can also be replaced quickly and without any risk of confusion are feasible.

The attachment of the connector to the hotplate body or the cover plate is preferably made by locking means, the attachment being particularly advantageous not only non-positively, but is also form-fitting. Furthermore the connector can be detachable, for which the locking means in particular as attachments, locking lugs or the like are that in their course a cross-sectional expansion or have a significant change in direction. A possible Installation is the insertion of a locking lug into a special one shaped recess or recess in the hotplate body or the cover plate with subsequent pivoting.

The connector with at least one is preferred Insulating piece containing the connecting line is force-transmitting connected, advantageously in one piece. The one-piece can be made by connecting the two pieces, preferably they are made in one piece. The insulating piece can as a lead through the cover through the cover plate serve what it can be connected to and one, preferably all, contains connections. Particularly preferred are the connections of heating devices via a connecting wire or the like. connected to the connector lugs.

Contacting the connecting lines or connecting wires the hotplate with the, preferably made of metal or special nickel-plated steel existing, plug-in connection lugs can be made inseparable, preferably by welding using a welding gun. In a further embodiment can the connection of the connections with the plug connection lugs after attaching connector and Insulator and an automatic solution of the Connection piece or the locking means and / or the insulating piece prevent movement of the locking means in the opposite direction prevents their introduction movement.

For labeling electric hotplates, for example by installation location, Performance class or design differences is the connector almost coded by its shape. This is one for at least one connector lug different design of that part of the connecting piece, the one with a plug-in connector Plug housing or the like. comes or a connection comes in. The different training can each on the area of a connector flag be limited. Both recesses and protrusions, each corresponding between the connector and the connector housing, lend themselves to what the number of different encodings becomes sufficiently large. The codings can be designed in this way be that the connector housing is turned by 180 ° or mixed up two plug connections is avoided.

According to a preferred embodiment of the invention, the connection piece, whose body is preferably in one piece and only one Material consists, preferably also the insulating piece both electrically as well as advantageously thermally insulating, are preferably used Ceramic materials, such as steatite, or possibly special plastic materials. A particularly safe insulation of the connector lugs can by material bridges of the connector and / or the Connector housing can be reached between the connector lugs. The connecting piece particularly preferably has material bridges of this type on, as this causes the plug-in connector lugs in the non-connected state are supported. With an alternative version it is possible the Connection lugs largely with open spaces on the Provide connector to accommodate material bridges create that between the plug connections on the connector housing are trained. The material bridges can the under Voltage plug connections of the stove control in the Disassemble when not assembled and / or plug together for improved insulation between the individual Slide contacts.

To attach the connector, a carrier on the Hotplate body or the lower cover plate, for example by flanging, caulking or riveting his. An indirect attachment of the connector via the Carrier opens at a thermal and / or electrical insulating trained carrier the possibility of the connector or the plug-in connection lugs additionally from the Uncouple the hotplate and thus the main heat source. For example, the carrier consists of a relatively thin one Sheet with low heat conduction, with the insulating piece through it can be passed through and either the carrier Isolierstück or the insulating piece the carrier on the hotplate can set.

The connector and / or are available for simplified assembly the plug-in connection lugs do not prefer over the outer radius of the hotplate body, but are advantageously located radially within an edge of the hotplate body. Such an edge can in particular be flange-like from that Stick out hotplate body and in a accordingly shaped recess in the top of an electric cooker or Cooktop are introduced. According to a particularly advantageous one The hotplate can be easily installed vertically from above into a recess in the electric range, preferably without swiveling or tilting, used and locked and connected.

The attachment of the connector lugs in the connector can with paragraphs or the like. be supported. According to one version of the invention, the plug-in connection lugs from a Inserted into the connector up to a stop be, especially in the direction of insertion. At a preferred embodiment of the invention are the plug connection lugs with locking means on or in the connector attached, especially positive. Tabs are possible or the like. on the plug connection lug, which in a recess in engage the connector and deformed or bent in this way or be twisted so that they the plug connection lug fix the connector. In particular, the Recess delimiting surfaces on which one to be rotated Tab rests, rising in the direction of rotation be and run towards the tab. This will make the connector tab when turning further into the connector drawn. Alternatively, at least one plug connection lug already incorporated in the manufacture of the connector or cast in, pressed in or overmolded, which is particularly true in an injection molding manufacturing process suitable for the connector. At least one connector flag can protrude from the connector, preferred with a contact section for the plug connections.

The plug-in connection lugs are preferably parallel to one another arranged and preferably have essentially one Middle of the electric hotplate. Which results from the course of the The direction of insertion of the connecting lugs is advantageous roughly parallel to the top of the hotplate body.

In a further embodiment of the invention can be on the bottom of the hotplate body against a temperature limiter Overheating of the electric hotplate can be provided. A The maximum working temperature is limited in the sense an accurate and rapid evaluation as close as possible to the Hot plate or its heating.

The underside of the hotplate body is used as a cover plate mostly covering plate proposed, which is closed except for fastening and connection recesses is. Via a centrally located fastener, for example a threaded bolt, it will be with a Screwed section of the hotplate body screwed. When assembling the electric hotplate is preferred the insulating piece is attached in front of or with the tin plate, while the connector is advantageous only afterwards is attached.

An advantage of the invention is that a connector between electric hotplate and hotplate control or energy supply directly on the hotplate, preferably right there, is possible. During transport and at the final assembly are not impractical on the hot plates and obstructing connection cables in the way. Beyond that you have to not expensive after the ones attached to the end of cables Connections or the like in one on the bottom of an electric cooker look for the prevailing tangle of cables. On the bottom of an electric cooker can be pre-assembled cable harnesses be provided that extend directly to the receiving openings and form predefined connection points.

These and other features go beyond the claims also from the description and the drawings, wherein the individual features individually or separately several in the form of sub-combinations in one embodiment of the invention and in other fields be and advantageous as well as protective designs can represent, for which protection is claimed here. The division of the application into individual sections as well Subheadings limit those made under them Statements not in their general validity.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1

einen Querschnitt durch eine erfindungsgemäße Elektrokochplatte mit einem Anschlußstück, das Steckanschlußfahnen enthält und an einer Abdeckung der Kochplattenunterseite angebracht ist,

Fig. 2

eine Ansicht der Kochplatte aus Fig. 1 von unten,

Fig. 3

eine Variante eines Anschlußstücks samt Stekkergehäuse in einer vergrößerten Ansicht gemäß Fig. 1,

Fig. 4

eine Unteransicht der Elektrokochplatte aus Fig. 3,

Fig. 5

eine weitere Variante gemäß einem Aspekt der Erfindung mit einem an einem Träger angebrachtes Anschlußstück samt Steckergehäuse,

Fig. 6

eine Draufsicht auf ein erfindungsgemäßes Steckergehäuse, das im wesentlichen geschlossen ist sowie eine Codiernase aufweist,

Fig. 7

eine Ansicht der Elektrokochplatte aus Fig. 5 von unten,

Fig. 8

einen vergrößerten Querschnitt des Anschlußstücks aus Fig. 1,

Fig. 9

eine vergrößerte Rückansicht des Anschlußstücks aus Fig. 8 und

Fig. 10

eine Draufsicht auf das Anschlußstück aus Fig. 8 samt Teilschnitt mit Ansicht der verdrehten Befestigungslasche.

Preferred embodiments of the invention are shown in the drawings and are described in more detail below. The drawings show:

Fig. 1

3 shows a cross section through an electric hotplate according to the invention with a connecting piece which contains plug-in connection tabs and is attached to a cover of the underside of the hotplate,

Fig. 2

2 shows a view of the hotplate from FIG. 1 from below,

Fig. 3

2 shows a variant of a connecting piece including the plug housing in an enlarged view according to FIG. 1,

Fig. 4

3 shows a bottom view of the electric hotplate from FIG. 3,

Fig. 5

another variant according to one aspect of the invention with a connector attached to a carrier including the plug housing,

Fig. 6

2 shows a plan view of a connector housing according to the invention, which is essentially closed and has a coding lug,

Fig. 7

5 shows a view of the electric hotplate from FIG. 5 from below,

Fig. 8

2 shows an enlarged cross section of the connector from FIG. 1,

Fig. 9

an enlarged rear view of the connector from Fig. 8 and

Fig. 10

a top view of the connector from Fig. 8 including a partial section with a view of the twisted mounting bracket.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The cross-sectional view in Fig. 1 of an inventive Electric hotplate 11, which is on its actual top 12 is shown lying, has a substantially flat Hotplate body 13 on the inside with a centric ribs 14 is provided. In the gaps between the ribs 14 are elongated tubular heaters 15 arranged with one in the left part of FIG. 1 shown short upward connecting line 16. To the outermost heating device 15 is the Hotplate body 13 is provided with an insert flange 17. On this is followed by a rim 20 which has a recess in an electric cooker in which the hotplate 11 is inserted is completed upwards. In the middle the Top 12 has a central indentation 18 which in one protruding thread approach 19 passes on the inside.

The underside of the electric hotplate 11 is largely from a plate plate 21 covered, the middle of the threaded approach 19 rests and in its outer area to the outermost Heaters 15 and the insert flange 17 is applied. By means of a threaded bolt screwed into the threaded shoulder 19 22 and a mother 23 guided on it Sheet plate 21 attached to the underside.

Through a recess 25 in the outer area of the plate plate 21 is an insulating piece 26 out with a section protrudes with a reduced diameter over the sheet, which rests on a substantially circumferential paragraph 27. A connecting wire 29 is guided through a bore 28, which is connected to the connecting line 16. The Bore 28 is in the lower area for simplified implementation of the lead wire 29 expanded. The Insulating piece 26 is a fit in the recess 25 supported, a kind of thread approach would also be possible.

Is then located radially outwards on the insulating piece 26 there is a connector 31 with a lower latch 32 inserted into a latching opening 33 in the plate plate 21 is. The insertion takes place from the inside and radially diagonally above, then the connector 31 to the right in the end position tilted, being in the upper area of the Isolierstücks 26 and with the underside of the sheet metal plate 21 is present.

In a slot 34 in the connector 31 is a plug-in tab 35, of which a contact section 36 slightly beveled and tapered radially outwards and one Welding lug 37 is located radially inward, to which the connecting wire 29 is guided and connected. S is in plug direction the plug-in tab 35 by paragraphs in the upper and lower Area on corresponding shoulders 39 in the connector 31 held so that it occurs when a plug occurs Force in direction S can not be pressed further can. In the opposite direction, the plug-in lug 35 held by a tab 40 through the Slot 34 is guided and after insertion in a Opening 44 is rotated about its longitudinal direction, causing it extends over the boundary of the slot and thus one Pulling out prevented. The attachment of the plug connection lugs in the insulating piece is detailed in Figs. 8-10 shown and will be described later.

The connection between the welding lug 37 and the connecting wire 29 after inserting the with the connector lug 35 provided connector 31 by means of the detent 32nd is produced in the sheet metal plate, prevents this Movement in the opposite direction and thus a release of the Fitting. In addition to the electrical connection second function a mechanical connection.

At the threaded approach 19 is between the plate plate 21 and hotplate body 13, a temperature limiter 41 is attached, specifically in the area of the recess 18. This is limited the maximum achievable working temperature of the electric hotplate 11 and is sufficient for this purpose with at least one Measuring tip 42 on the hotplate body 13.

2 shows a view of the underside of the electric hotplate 11. In the left area you can see this in top view Insulating piece 26, which is elongated with semicircular ends is formed and in the recess 25 in the plate plate 21 sits. The connecting wires are through four bores 28 29 out. The connecting piece borders on the insulating piece 31, which has four plug-in connection lugs 35 which with the contact section 36 radially outwards and with the Protruding welding tabs 37 inwards. As in Fig. 1 it can clearly be seen that neither the connecting piece 31 nor the connecting lugs 35 over the insert flange 17 of the hotplate body 13 survive.

3 is an enlarged view corresponding to FIG. 1 the area of the electric hotplate 11 shown in which is the connector 31. In this embodiment the invention, the connector is designed such that it is with a short detent 32 by a Detent opening 33 is guided in the plate plate 21 and the connector, that with a lower, radially inner Section on the radially outer part of the insulating piece 26 is present. The insulating piece 26 and its attachment and attachment to the electric hotplate 11 by means of of the plate plate 21 correspond to FIG. 1.

In slots 34 on the top of the connector 31 are the plug-in terminal lugs 35 used, whereby, unlike in Fig. 1, upwards and essentially not to the side be covered by the connector. While in Fig. 1 the Tabs 40 are guided radially inwards, the tabs sit 40 here in a direction perpendicular to the insertion direction S. Opening 44. Similar to Fig. 1, the tabs in the Opening 44 through a corresponding to their material thickness Be guided slot, the protruding beyond this slot Part by twisting the entire plug connection lug 35 specifies. In the embodiment shown in Fig. 3 is the plug connection lug both in the plug direction S and in opposite direction only through the tab 40 and the connection of the welding lug 37 to the connecting wire 29 supported. Through this connection as well as through the plant the insulating piece 26 is a tipping out of the connector 31 prevented.

Against the connector 31 is in the direction of insertion S. Plug housing 45 led to the plug-in tabs 35th has corresponding plug-in connection shoes 46. The Plug-in connection shoes 46 can start from a flat side 55 have inwardly narrow tongues 56 in a narrow radius, the an inserted contact section against the Press flat page 55 for large-area contact. On the other end are the plug-in connection shoes with a flexible connecting line 47 connected. The contact section 36 has a hole 57 into which a not shown Projection on the flat side 55 of the plug connection shoe 46 intervene and a locking connection can manufacture.

The plug housing 45 encompasses the plug connection shoes 46 full, which are laid down in it. This means that between the Plug-in connection shoes material bridges, which in one version of the connector 31 shown in FIG. 3 between each Plug connections are located and ensure insulation. For increased connection security are both on the connector 31 and on the connector housing coding lugs 48 provided that twisting or confusing the connector prevent it either mechanically or visually.

In Fig. 4 it can be seen that the connector tabs 35 in the Expose slots 34 upwards. Only by pushing it over of the connector housing 45 they are from this at least partially covered. As can be seen in Fig. 4, are the coding lugs 48 on connector 31 and Connector 45 when the connector is twisted, it is not possible to plug it on. In a similar way for an electric cooker or the like a number of connectors and connectors are provided with coding lugs such that both a twisting of the plug as well as a connection of a plug to an unintended hotplate is impossible.

4 shows the opening 44, in which the tab 40 compared to that in a plane with the Plug-in lug extending insertion slot 34 by about 60 ° is twisted, so that pulling out the tab and thus Remove the connector tab from the connector 31 is prevented.

5 corresponds to the structure of the hotplate 11 of FIG. 3. However, here is in the recess 25, through which Insulating piece 26 protrudes through the sheet metal plate 21 by lateral Bead a thin carrier 50 with the tin plate connected. The upper section of the insulating piece 26 extends through a carrier opening 51 which is inside the recess 25 runs beyond the tin plate. A gradation closes radially outward from the carrier opening 51 continuously a support section spaced from the metal plate 52 on. The connector 31 is attached to it, preferably similar to the previous versions by insertion a molded catch or the like. in a matching one Recess in the carrier section 52.

The plug connection lugs 35 are essentially as in FIG. 1 designed, in the extension of the contact section 36th the tab 40 in an opening provided for fastening 44 stuck, twisted in it, and further the sweat 37 led to the lead wire 29 and with this is welded. By shoulders 39 in the connector the plug-in tab 35 in the plug-in direction S and through the Tab 40 held in the opposite direction.

The connector housing is similar to that in FIG. 3, however with a distinctly protruding coding lug 48.

6 shows a possible embodiment of a connector housing 45, which corresponds approximately to that of FIG. 5. The Coding nose is approximately triangular here with in the direction of insertion S running flattened tip 53 executed in a corresponding recess on the connector 31st can intervene. The coding lug 48 is slightly on the side Staggered in the middle of the plug, creating several plug connections can be marked.

FIG. 7 shows a view of the inside similar to FIG. 4 5. You can see the carrier 50, which surrounds the insulating piece 26 and the connecting piece 31st wearing. At its radially inner end are the twisted ones Mounting tabs 40 out of the connector. The Plug housing 45 is essentially in this embodiment separate housing sections for the Plug-in connection shoes 46, one of which is an elongated, narrow coding nose 48 carries.

Fig. 8 shows an enlarged section through a connector 35 according to FIG. 1. This can be clearly seen Rise of the contact surfaces 58 through the oblique line of the Delimitation of the opening 44 towards the slot 34. The direction of rotation V is seen from the welding lug 37 in Clockwise, the angle of rotation is about 30 °.

The underside 61 of the connector 31 has arches 59, through which the contact surface towards the tin plate in order to reduce Heat retention is reduced. Are on top further coding recesses 60 are provided.

FIG. 9 shows the connecting piece 31 from FIG. 8 from behind. A coding recess 49 can be seen, into which a coding lug 48 of the connector 45 can engage. The angle of rotation of the Tab 40 is approximately 30 ° clockwise. The openings 44 are round. The plug-in tabs 35 are except for the contact section 36 and sweat tab 37 completely from the connector surround. The number of coding pits is 60 depending on the plug-in lug over which they are formed, different and ranges from one to four. The latch 32 is in the middle of the connector on the through the arches 59 interrupted underside 61 formed. Through arches 59 the surface of the underside is cut in half, another Reduction is possible with a suitable choice of material.

The partial section in Fig. 10 illustrates the increase in Contact surface 58 of the tab 40. The further the tab is rotated the more it pulls the plug-in connection lug into or against the connector. A bending of the to Contact surfaces 58 adjacent tab edges against the Direction of rotation V occur and as self-locking of the rotation reach into the material of the contact surface by turning back to complicate and so the connection against unwanted Securing to secure.

To assemble an embodiment of the invention Connection is first the plug-in tab 35 in the Inserted connector 31 and by rotating the tab 40 secured. The connector is then with a Latch 32 in a corresponding recess in the the hotplate body 13 attached plate 21, which Has insulating piece 26 in the recess 25 is used. By welding the plug connection lug 35 or the welding lug 37 with the connecting wire 29 which through the bore 28th of the insulating piece 26, the connector 31 is in its position. The connection must be dismantled solved between plug-in tab 35 and connecting wire 29 become. It is possible to form the insulating piece 26 in one piece to execute the connector 31 and during assembly to lead a connecting wire 29. Here is where connecting the plug-in connection lug with the connecting wire the last one Step in the attachment of the connector.

Claims (14)

1. Use of an electric cooking plate in an electric range with several electric cooking plates (11), with a cooking plate element, a bottom cover plate and a connecting piece for electrical connection of the cooking plate, where the connecting piece is attached to the cooking plate element or to the cover plate, where the connecting piece (31) has at least one plug-in connector lug (35) for contacting plug-in connectors, and where the at least one plug-in connector lug has a connecting section for connection of a connecting lead (16, 29) leading out of an underside of the cooking plate for supplying power to the electric cooking plate (11), characterized in that the connecting piece (31) is formed differently in some sections in each area of a plug-in connector lug (35), where the differences comprise recesses and/or projections matching corresponding recesses and/or projections in connector housings (45) of the plug-in connectors.
2. Use of an electric cooking plate according to Claim 1, characterized in that the connecting piece (31) is attached with locking means to the underside of the cooking plate element (13) or of the cover plate, in particular in positive form, where said connecting piece is attached preferably releasable and the locking means are in particular protruding engaging noses (32) that can be inserted into a recess in the cooking plate element or in the cover plate by swivelling them in.
3. Use of an electric cooking plate according to Claim 1 or 2, characterized in that the connecting piece (31) is connected to an insulator (26), in particular single-piece, that receives at least one connecting lead (16, 29) and is passed through the cover plate, where preferably heating units (15) are connected by their connecting lead (16) via a connecting wire (29) to the plug-in connector lugs (35).
4. Use of an electric cooking plate according to one of the previous claims, characterized in that the connecting leads (16, 29) are undetachably connected to the plug-in connector lugs (35) and are preferably welded to one another, where the connection of the connecting leads to the plug-in connector lugs preferably forms an additional fastening for the locking means or for the connecting piece (31).
5. Use of an electric cooking plate according to one of the previous claims, characterized in that the recesses and/or projections are different for all cooking plates during installation into the electric range.
6. Use of an electric cooking plate according to one of the previous claims, characterized in that the connecting piece has between the plug-in connector lugs (35) material bridges or similar that support the plug-in connector lugs and in particular block any direct air connection, and in particular has on its underside (61) recesses in the form of arches (59) or similar for reducing the contact surface between connecting piece (31) and cooking plate.
7. Use of an electric cooking plate according to one of the previous claims, characterized in that the connecting piece (31) is attached to a support (50) on the cooking plate element (13) or on the lower cover plate, which is fastened in particular by beading or crimping, where the support is preferably heat-resistant and/or insulating and in particular at least partially surrounds the insulator (26).
8. Use of an electric cooking plate according to one of the previous claims, characterized in that the connecting piece (31) and/or the plug-in connector lugs (35) do not project beyond the outer radius of the cooking plate element (13) and run preferably radially inside an edge to be inserted into a recess of an electric range, in particular inside an edge projecting flange-like from the cooking plate element.
9. Use of an electric cooking plate according to one of the previous claims, characterized in that at least one plug-in connector lug (35) is supported, in particular in one insertion direction (S) with shoulders or the like in the connecting piece (31), where said plug-in connector lug is preferably insertable from one side into the connecting piece, in particular in the insertion direction.
10. Use of an electric cooking plate according to one of the previous claims, characterized in that at least one plug-in connector lug (35) is attached with locking means to the connecting piece, in particular in positive form, where a tab (40) is preferably integral with the plug-in connector lug as the locking means and engages in a recess (44) for fastening to the connecting piece and is shapeable or twistable.
11. Use of an electric cooking plate according to one of the previous claims, characterized in that at least one plug-in connector lug (35) protrudes from the connecting piece (31), preferably with the entire contact section (36) to be contacted by a plug-in connector, where in particular part of the plug-in connector lug is completely surrounded by the connecting piece.
12. Use of an electric cooking plate according to one of the previous claims, characterized in that the cover plate is designed as a sheet metal plate (21) at least partially surrounding the cooking plate and that is substantially closed and covers the underside of the cooking plate element (13), where leadthroughs for connecting wires (29) and at least one in particular centrally arranged fastening element are provided for fastening to an electric range.
13. Electric range with several electric cooking plates (11), with a cooking plate element, a bottom cover plate and a connecting piece for electrical connection of the cooking plate, where the connecting piece is attached to the cooking plate element or to the cover plate, where the connecting piece (31) has at least one plug-in connector lug (35) for contacting plug-in connectors, and where the at least one plug-in connector lug has a connecting section for connection of a connecting lead (16, 29) leading out of an underside of the cooking plate for supplying power to the electric cooking plate (11), characterized in that the connecting piece (31) is formed differently in some sections in each area of a plug-in connector lug (35), where the differences comprise recesses and/or projections matching corresponding recesses and/or projections in connector housings (45) of the plug-in connectors and that are different for all cooking plates during installation into the electric range.
14. Electric range according to Claim 13, characterized in that the electric cooking plate (11) is designed according to one of the Claims 2 to 12.

Images