EP0957661B2 - Use of an electric cooking plate in an electric range and electric range - Google Patents

Description

The invention relates to a use of an electric hotplate in an electric cooker with a plurality of electric hotplates with a hotplate body, a lower cover plate and a connector for electrically connecting the hotplate, wherein the fitting is attached to the hotplate body and the cover plate. Furthermore, the invention relates to an electric cooker.

An electric hotplate of this kind is for example from the DE-OS 33 01 219 out. A positioning member includes a welded connection between a terminal of the heating device of the hotplate and a flexible connecting line, which is guided for power supply or hotplate control. Here, the positioning part is intended to fix the position of the connections or the connection wires forming them and to prevent mutual contact. The welds between each of a connection lead and a lead wire are disposed within the positioning member, while a weld between the rigid lead wire and a lead wire is outside the positioning member.

From the EP-A-0 473 986 It is known to perform the connection of a hotplate by means of so-called ferrules. In this case, connecting cables are welded with an exposed end to a connecting wire, which represents a connection line of the hotplate. A quick establishment or release of this weld is not possible.

TASK AND SOLUTION

It is an object of the invention to provide an aforementioned use and an electric stove, which are very easy to connect, with the electric hotplate final assembly is easy to perform and the connection is designed safe and very easy to install.

This object is solved by the features of claims 1 and 11. In this way, in the final assembly, the connection between the electric hotplate and hotplate control, in an electric cooker or a hob by a quick-to-install connector directly to the hot plate done, which is both time-saving and safe to carry out.

Benefits arise in a subsequently necessary replacement of a defective electric hotplate of an electric range or a cooktop, since in such a case, on the one hand, only very difficult welded joints can be made on the hotplate connections and in the eventual combination of connecting lines to harnesses or the like., The are brought directly to the hotplates, a costly relocation of a portion of these cables can be saved. The plug-in connections on the connecting lines can be guided by the manufacturer to the area below the built-in electric hotplate area and may be partially fixed there, so that both final assembly and replacement of individual hotplates can be carried out quickly and without risk of confusion.

The attachment of the fitting on the hotplate body or the cover plate is effected by locking means, the attachment is particularly advantageous not only frictionally, but also form-fitting. In addition, the connector is detachable, to which the locking means are designed as attachments, locking lugs o. The like., Which have in their course a cross-sectional widening or a significant change in direction. One possible method of assembly is the insertion of a detent into a specially shaped recess or depression in the hotplate body or the cover plate with subsequent pivoting.

Preferably, the connecting piece is connected in a force-transmitting manner to an insulating piece containing at least one connecting line, advantageously in one piece. The unitary piece can be made by joining the two pieces, preferably they are made in one piece. The insulating piece can serve as a passage of the lead through the cover plate, what it can be connected to this and one, preferably all, contains connections. Particularly preferred are the connections of heaters via a connecting wire or the like. connected to the plug connection lugs.

A contacting of the leads or connecting wires of the hotplate with, preferably made of metal or specially nickel-plated steel, plug connection lugs can be made inseparable, preferably by welding by means of welding tongs. In a further embodiment, the connection of the terminals can be made with the plug connection lugs after attachment of connector and insulator and prevent an automatic solution of the connector or the locking means and / or the isolierstücks by preventing movement of the locking means in the opposite direction to their insertion movement.

For identification of electric hotplates, for example, by installation location, power class or design differences, the connector is quasi encoded by its shape. This is a different for at least one Steckanschlußfahne design of that part of the An-fitting, the like in contact with a plug-in connections plug housing or the like. comes or a connection is received. The different training can each be limited to the area of a plug connection lug. Both recesses and projections, each corresponding between connector and connector housing, offer themselves, whereby the number of different codes is sufficiently large. The Codes can be designed so that a rotation of the connector housing by 180 ° or swapping two Steckanschlüssse is avoided.

According to a preferred embodiment of the invention, the An-fitting, the body is preferably in one piece and consists of only one material, preferably also the insulating both electrically and advantageously thermally insulating, are preferably used ceramic materials, such as steatite, or possibly special plastic materials , A particularly secure insulation of the plug connection lugs can be achieved by material bridges of the connecting piece and / or the plug housing between the plug connection lugs. Particularly preferably, the connector has such material bridges, as a result, in the non-connected state, the Steckan plug connection lugs can be supported. In an alternative embodiment, it is possible to provide the terminal lugs largely with open spaces on the connector to make room for material bridges formed between the male terminals on the connector housing. The material bridges can disconnect the powered plug-in connections of the oven control in the unmounted state and / or slide after mating for improved isolation between the individual contacts.

For attachment of the connector, a carrier to the hotplate body or the lower cover plate, for example by crimping, caulking or riveting, be attached. An indirect attachment of the connector over the carrier opens in a thermally and / or electrically insulating support the possibility of decoupling the connector or the plug connection lugs in addition from the hotplate and thus the main heat source. For example, the carrier consists of a relatively thin sheet with little heat conduction, wherein the insulating piece can be passed through it and either the carrier the insulating piece or the insulator can fix the carrier to the hotplate.

For simplified assembly, the connecting piece and / or the plug connection lugs are preferably not over the outer radius of the hotplate body over, but are advantageously radially within an edge of the hotplate body. Such an edge may, in particular, protrude in a flange-like manner from the hotplate body and be introduced into a correspondingly shaped recess in the upper side of an electric cooker or hob. According to a particularly advantageous mounting option, the cooking plate can be simply perpendicular from above into a recess of the electric range, preferably without pivoting or tilting, used and locked and connected.

The attachment of the plug connection lugs in the connector can with paragraphs or the like. be supported. According to one embodiment of the invention, the plug connection lugs can be inserted from one side into the connecting piece to a stop, in particular in the insertion direction. In a preferred embodiment of the invention, the plug connection lugs are mounted with locking means on or in the connecting piece, in particular form-fitting manner. Possible are tabs or the like. at the plug connection lug, which engage in a recess in the connector and are deformed or bent or twisted so that they set the plug connection lug on the connector. In particular, the surfaces bounding the recess, against which a tab to be twisted, may be formed to increase in the direction of rotation and to run towards the tab. As a result, the plug connection lug is pulled further into the connecting piece during rotation. Alternatively, at least one plug connection lug can already be incorporated or cast, pressed or overmolded in the manufacture of the connection piece, which is particularly suitable for an injection molding method for the connection piece. At least one male terminal lug may protrude from the connector, preferably with a contact portion for the male terminals.

Preferably, the plug connection lugs are arranged parallel to one another and preferably have substantially to a center of the electric hotplate. The plugging direction resulting from the course of the plug connection lugs is advantageously approximately parallel to the upper side of the hotplate body.

In a further embodiment of the invention, a temperature limiter can be provided against overheating of the electric hotplate on the underside of the hotplate body. A limitation of the maximum working temperature takes place in the sense of a precise and rapid evaluation as close as possible to the cooking plate or its heating.

As a cover plate, a bottom plate of the hotplate body largely covering sheet metal plate is proposed, which is closed except for mounting and Anschlußausnehmungen. Via a centrally arranged fastening element, for example a threaded bolt, it is screwed to a threaded portion of the hotplate body. When assembling the electric hotplate, the insulating piece is preferably mounted in front of or with the sheet metal plate, while the connecting piece is advantageously attached only thereafter.

An advantage of the invention is that a plug connection between the electric hotplate and hotplate control or power supply directly to the hotplate, preferably directly thereto, is possible. During transport and during final assembly, there are no impractical and hindering connection cables in the way. In addition, you do not have to laboriously after the attached at the end of cables terminals or the like. in a cable clutter ruling on the underside of an electric cooker. Prefabricated cable harnesses can be provided on the underside of an electric range which extend directly to the receiving openings and form predefined connection points.

These and other features will become apparent from the claims but also from the description and drawings, wherein the individual features each alone or more in the form of sub-combinations in an embodiment of the invention and in other fields be realized and advantageous and protectable Represent embodiments for which protection is claimed here. The subdivision of the application into individual sections as well as intermediate headings does not restrict the general validity of the statements made thereunder.

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 die nicht zu der Erfindung gehört, 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 illustrated in the drawings and will be described in more detail below. In the drawings show:

Fig. 1

a cross section through an electric hotplate according to the invention with a connector which contains plug connection lugs and is attached to a cover of the cooking plate underside,

Fig. 2

a view of the cooking plate Fig. 1 from underneath,

Fig. 3

a variant of a fitting together with Stekkergehäuse in an enlarged view according to Fig. 1 .

Fig. 4

a bottom view of the electric hotplate Fig. 3 .

Fig. 5

a further variant which does not belong to the invention, with a mounted on a support connector with connector housing,

Fig. 6

a plan view of an inventive connector housing, which is substantially closed and has a coding nose,

Fig. 7

a view of the electric hotplate Fig. 5 from underneath,

Fig. 8

an enlarged cross section of the connector from Fig. 1 .

Fig. 9

an enlarged rear view of the connector Fig. 8 and

Fig. 10

a plan view of the connector Fig. 8 including partial section with view of the twisted fastening strap.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The cross-sectional view in Fig. 1 an electric hotplate 11 according to the invention, which is shown lying on its actual top 12, has a substantially flat hotplate body 13, which is provided on its inside with a central ribbing 14. In the spaces between the ribs 14 elongated tubular heaters 15 are arranged with one in the left part of the Fig. 1 Subsequently, the hotplate body 13 is provided with an insert flange 17 to the outermost heater 15. This is followed by a raid edge 20, which closes a recess in an electric oven, in which the hotplate 11 is inserted upwards. In the middle, the top 12 has a central indentation 18, which merges into a protruding threaded projection 19 on the inside.

The underside of the electric hotplate 11 is largely covered by a metal plate 21, which rests centrally on the threaded projection 19 and rests in its outer region on the outermost heaters 15 and the insert flange 17. By means of a screwed into the threaded extension 19 threaded bolt 22 and a nut 23 guided thereon, the sheet metal plate 21 is attached to the underside.

Through a recess 25 in the outer region of the sheet metal plate 21, an insulating piece 26 is guided, which projects with a portion of reduced diameter over the sheet, which rests on a substantially circumferential shoulder 27. Through a bore 28, a lead wire 29 is guided, which is connected to the connecting line 16. The bore 28 is designed widened in the lower region for simplified passage of the lead wire 29. The insulating piece 26 is held by fitting in the recess 25, would be possible further a kind of threaded approach.

Radially outward on the insulating piece 26 is then a connection piece 31 which is inserted with a lower latching nose 32 in a latching opening 33 in the sheet metal plate 21 halter. The insertion takes place from radially inward and obliquely above, then the connecting piece 31 is tilted to the right in the end position, wherein it rests in the upper region of the insulating piece 26 and with the underside of the sheet metal plate 21.

In a slot 34 in the connector 31 is a plug terminal lug 35, from which a contact portion 36 slightly bevelled and tapered radially outward and a welding lug 37 is radially inwardly, to which the lead wire 29 out and connected. In the insertion direction S, the male terminal lug 35 is supported by paragraphs in the upper and lower regions of corresponding shoulders 39 in the connector 31, so that they can not be further pressed by a force occurring during insertion in the direction S. In the opposite direction, the male terminal lug 35 is held by a tab 40 which is passed through the slot 34 and, after insertion in an opening 44, is twisted about its longitudinal direction, thereby extending beyond the boundary of the slot and thus preventing it from being pulled out. The attachment of the plug connection lugs in the insulating piece is in the Fig. 8 to 10 detailed and will be described later.

The connection between the welding lug 37 and the lead wire 29, which is made after inserting the plug-in terminal lug 35 fitting 31 by means of the locking lug 32 in the sheet metal plate, just prevents this movement in the opposite direction and thus releasing the fitting. In addition to the electrical connection, the second function is a mechanical connection.

At the threaded neck 19 then a temperature limiter 41 is mounted between sheet metal plate 21 and hotplate body 13, in the region of the indentation 18. This limits the maximum achievable working temperature of the electric hotplate 11 and extends for this purpose at least with a probe tip 42 to the hotplate body 13th

The Fig. 2 shows a view of the bottom of the electric hotplate 11. In the left area can be seen in plan view the insulating piece 26 which is elongated with semicircular ends and is seated in the recess 25 in the sheet metal plate 21. Through four holes 28, the connecting wires 29 are guided in each case. Adjoining the insulating piece, the connecting piece 31, which has four plug-in connection lugs 35, which project with the contact portion 36 radially outward and with the welding lugs 37 inwardly. As well as in Fig. 1 It can clearly be seen that neither the connecting piece 31 nor the terminal lugs 35 project beyond the insert flange 17 of the hotplate body 13.

In Fig. 3 is appropriate Fig. 1 an enlarged view of the region of the electric hotplate 11 shown, in which the fitting 31 is located. In this embodiment of the invention, the connecting piece is designed such that it is guided with a short latching nose 32 through a latching opening 33 in the sheet metal plate 21 and the connecting piece, which rests with a lower, radially inner portion on the radially outer part of the insulating piece 26, sets. The insulating piece 26 and its attachment and attachment to the electric hotplate 11 by means of the sheet metal plate 21 correspond to the Fig. 1 ,

In slots 34 on the upper side of the connecting piece 31, the plug connection lugs 35 are inserted, wherein, unlike in Fig. 1 , are not covered by the fitting upwards and substantially to the side. While in Fig. 1 the tabs 40 are guided radially inwardly, sit the tabs 40 here in a direction perpendicular to the insertion direction S opening 44. Similarly as in Fig. 1 For example, the tabs in the opening 44 may be guided by a slot corresponding to their material thickness, wherein the part projecting beyond this slot fixes the entire plug connection tab 35 by twisting. At the in Fig. 3 illustrated embodiment, the plug connection lug is held both in the insertion direction S and in the opposite direction only by the tab 40 and the connection of the welding lug 37 with the connecting wire 29. Through this connection and by the system on the insulating piece 26, a tilting of the connecting piece 31 is prevented.

Against the connecting piece 31, a plug housing 45 is guided in the insertion direction S, which has the plug connection lugs 35 corresponding plug connection shoes 46. The male terminals 46 may have from a flat side 55 starting in a tight radius inwardly extending tongues 56 which press an inserted contact portion against the flat side 55 for large-area contact. At the other end, the plug connection shoes are connected to a flexible connection line 47. The contact portion 36 has a hole 57 into which an unillustrated projection on the flat side 55 of the male terminal 46 engage and can make a latching connection.

The connector housing 45 fully engages the male terminal shoes 46 which are fixed therein. As a result, between the plug connection shoes material bridges, in accordance with an embodiment of the fitting 31 Fig. 3 between each of the plug connections and ensure insulation. For increased connection security coding lugs 48 are provided both on the connector 31 and on the connector housing, which prevent twisting or confusion of the plug either mechanically or visually recognizable.

In Fig. 4 It can be seen that the male terminals 35 are exposed in the slots 34 upwards. Only by pushing over the plug housing 45, they are at least partially covered by this. How to get in the Fig. 4 sees, are the coding lugs 48 to connector 31 and plug 45 with a twisting of the plug exactly opposite, a plugging is not possible. Similarly, for an electric cooker or the like. a number of fittings and plugs are provided with coding lugs so that both a twisting of the plug and a connection of a plug to an unattended hotplate is impossible.

Dashed lines are shown in the Fig. 4 the opening 44, in which the tab 40 is rotated relative to the running in a plane with the male terminal lug insertion slot 34 by about 60 °, so that Pulling out the tab and thus removing the male terminal lug from the connector 31 is prevented.

The Fig. 5 corresponds to the structure of the hotplate 11 of Fig. 3 , However, here in the recess 25 through which the insulating piece 26 projects beyond the sheet metal plate 21, by lateral flanging a thin carrier 50 is connected to the sheet metal plate. The upper portion of the insulating piece 26 extends through a support opening 51 which extends within the recess 25, beyond the sheet metal plate. A graduation is followed by the carrier opening 51 running radially outwardly a spaced from the metal plate support portion 52 at. This is the connecting piece 31 is fixed, preferably similar to the previous embodiments by introducing a molded locking lug or the like. in a matching recess in the support portion 52nd

The plug-in lugs 35 are substantially as in Fig. 1 designed, in extension of the contact portion 36, the tab 40 is inserted in an opening provided for attachment 44, is twisted therein, and further the welding lug 37 is guided to the lead wire 29 and welded thereto. By shoulders 39 in the connector plug-in terminal lug 35 is held in the direction of insertion S and by the tab 40 in the opposite direction.

The connector housing is similar to in Fig. 3 executed, but with a pronounced protruding coding nose 48th

The Fig. 6 shows a possible embodiment of a connector housing 45, which is approximately the Fig. 5 equivalent. The coding nose is here executed approximately in a triangular shape with a flattened tip 53 extending in the direction of insertion S, which can engage in a corresponding recess on the connecting piece 31. The coding nose 48 is laterally offset slightly towards the center of the plug, whereby a plurality of plug connections can be identified.

The Fig. 7 shows similar to the Fig. 4 a view of the inside of the hotplate according to Fig. 5 , One sees the carrier 50 which surrounds the insulating piece 26 and carries the connecting piece 31. At the radially inner end of the twisted mounting tabs 40 are out of the connector. The connector housing 45 is provided in this embodiment with substantially separate housing sections for the Steckanschlußschuhe 46, one of which carries an elongated, narrow coding nose 48.

The Fig. 8 shows an enlarged section through a connector 35 according to Fig. 1 , Clearly visible is the increase of the contact surfaces 58 through the oblique line of the boundary of the opening 44 to the slot 34 out. The direction of rotation V is seen from the welding lug 37 from the clockwise direction, the angle of rotation is about 30 °.

The bottom 61 of the connecting piece 31 has arches 59, through which the contact surface is reduced towards the sheet metal plate for the purpose of low heat retention. At the top of further Codiervertiefungen 60 are provided.

The Fig. 9 shows the connector 31 from Fig. 8 from behind. To see is a Codierausnehmung 49, in which a coding nose 48 of the plug 45 can engage. The angle of rotation of the tabs 40 is about 30 ° clockwise. The openings 44 are round. The plug connection lugs 35 are completely surrounded by the connecting piece except for contact section 36 and welding lug 37. The number of Codiervertiefungen 60 is depending on the plug connection lug, over which they are formed, different and ranging from one to four. The detent 32 is formed in the middle of the fitting at the interrupted by the arches 59 bottom 61. By the arches 59, the surface of the bottom is approximately halved, a further reduction is possible with a suitable choice of material.

The partial section in Fig. 10 illustrates the increase in the contact surface 58 of the tab 40. The further the tab is rotated, the stronger it pulls the plug connection lug in or against the connector. In this case, a bending of the voltage applied to the contact surfaces 58 tab edges opposite to the direction of rotation V occur and attack as a self-locking twist in the material of the contact surface to complicate turning back and so to secure the connection against unwanted loosening.

For assembling an embodiment of the invention, the connector terminal lug 35 is first inserted into the connector 31 and secured by turning the tab 40. The fitting is then inserted with a detent 32 in a corresponding recess in the attached to the hotplate body 13 sheet metal plate 21, which has the insulating piece 26 in the recess 25. By welding the plug connection lug 35 or the welding lug 37 with the connecting wire 29, which extends through the bore 28 of the insulating piece 26, the connecting piece 31 is fixed in its position. To disassemble the connection between plug connection lug 35 and lead wire 29 must be solved. It is possible to carry out the insulating piece 26 in one piece with the connecting piece 31 and to guide it during assembly via a connecting wire 29. Here, the connection of the male terminal lug with the lead wire represents the last step in the attachment of the fitting.

Claims (12)

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 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, where the connecting piece (31) is attached with locking means to the underside of the cooking plate element (13) or of the cover plate in a form-fitting manner, it being attached in a releasable manner, and the locking means are projecting engaging noses (32), that can be inserted into a recess in the cooking plate element or in the cover plate by swivelling them in.
2. Use of an electric cooking plate according to claim 1, 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, wherein preferably heating devices (15) with their connecting lead (16) are connected via a connecting wire (29) to the plug-in connector lugs (35).
3. Use of an electric cooking plate according to any one of the claims 1 or 2, characterized in that the connecting leads (16, 29) are inseparably connected to the plug-in connector lugs (35), and preferably are welded together, where preferably the connection of the connecting leads to the plug-in connector lugs forms an additional fastening for the locking means or for the connecting piece (31).
4. Use of an electric cooking plate according to any one of the preceding claims, characterized in that the recesses and/or projections are different for all cooking plates, when installed in the electric range.
5. Use of an electric cooking plate according to any one of the preceding claims, characterized in that the connecting piece between the plug-in connector lugs (35) includes 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.
6. Use of an electric cooking plate according to any one of the preceding 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 preferably run radially inside an edge of the cooking plate element to be inserted into a recess of an electric range, in particular an edge projecting flange-like from the cooking plate element.
7. Use of an electric cooking plate according to any one of the preceding claims, characterized in that the at least one plug-in connector lug (35) is supported, in particular in an 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.
8. Use of an electric cooking plate according to any one of the preceding claims, characterized in that at least one plug-in connector lug (35) is attached with locking means to the connecting piece (31), in particular in a form-fitting manner, where preferably a tab (40) is integral with the plug-in connector lug as a locking means and engages in a recess (44) for fastening to the connecting piece and is deformable or twistable.
9. Use of an electric cooking plate according to any one of the preceding claims, characterized in that at least one plug-in connector lug (35) protrudes from the connecting piece (31), preferably with an 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.
10. Use of an electric cooking plate according to any one of the preceding claims, characterized in that the cover plate is configured in a sheet metal disk (21) surrounding said cover plate at least partially, said disk being essentially closed and covering the underside of the cooking plate element (13), wherein lead throughs for connecting wires (29) and at least one, in particular centrally arranged, fastening element for fastening to an electric range are provided.
11. 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 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, where the connecting piece (31) is attached with locking means to the underside of the cooking plate element (13) or of the cover plate in a form-fitting manner, it being attached in a releasable manner, and the locking means are projecting engaging noses (32), that can be inserted into a recess in the cooking plate element or in the cover plate by swivelling them in.
12. Electric range according to claim 11, characterized in that the electric cooking plate (11) is configured according to any one of the claims 2 to 10.

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