EP3428540A1 - Cooking plate device with a cooking plate and a cooking hob - Google Patents

Abstract

A hotplate device comprises a hotplate having a hotplate body having a flat top and bottom on which a short tubular skirt portion is provided, the skirt portion being disposed adjacent an outer edge of the hotplate body at the bottom thereof and having recessed recesses formed on an exterior. There is provided a mounting ring for the hotplate for attachment to a cooking plate of a hob, which has a continuous circumferential annular body on which at least two protruding locking projections are provided for cooperation with the recessed locking recesses of the short tubular ring portion as a snap-in connection.

Description

AREA OF APPLICATION AND PRIOR ART

The invention relates to a hotplate device with a cooking plate which is attached to a hob plate of a hob. Furthermore, the invention relates to such a hob with a corresponding hob plate and at least one hotplate device on it.

From the EP 957661 A2 Cooking plates are known which have a hotplate body with a flat top and a bottom. From the bottom is near the outer edge of a short tube-like ring section. In the center of the underside of the hotplate body, a central thread is provided to screw by means of a rod-shaped or cross-shaped counter bearing inserted from above into the hob plate in a receiving opening hotplate against the underside of the hob plate. Depending on the type of training of the thrust bearing but there is the disadvantage that such a screw can deform the hotplate or the hotplate body, which has a negative effect on the efficiency of the hot plate or transmission of their heat output to an attached cooking vessel.

TASK AND SOLUTION

The invention has for its object to provide an aforementioned hotplate device and provided with at least one such hotplate cooking hob with which problems of the prior art can be solved and it is possible in particular, a hot plate simple, safe and without harmful effects on a To be able to fasten the hob.

This object is achieved by a hotplate device with the features of claim 1 and provided with at least one such hob device hob with the features of claim 14. Advantageous and preferred embodiments of the invention are the subject of further claims and are explained in more detail below. Some of the features mentioned below are described only for the hotplate device or only for the hob. However, they should be able to apply independently and independently of each other for both the hotplate device and the hob. The wording of the claims is incorporated herein by express reference.

It is envisaged that the least one hotplate of the hotplate device comprises a hotplate body having a flat top surface and a bottom surface. At the bottom heating element or heating elements are arranged in known per se from the prior art manner, which will not be discussed in detail. Furthermore, a short tube-like ring portion is provided on the underside of the hotplate body, which advantageously corresponds substantially to a ring portion of the known prior art. This short tubular ring portion is provided near an outer edge of the hotplate body at the bottom, in particular integrally formed and thus an integral part of the hotplate body. The short tubular ring portion is at least partially formed circumferentially, advantageously completely encircling. It is in a direction away from the top or approximately perpendicular to the top of the bottom off. Its height can vary favorably between 1 cm and 5 cm particularly advantageous 2 cm to 3 cm.

According to the invention, it is provided that the short tube-like ring section has at least one recessed latching recess in the manner of a latching groove or a protruding latching projection. Furthermore, the hotplate device has latching connection means for interacting with the at least one recessed latching recess or with the at least one projecting latching projection of the short tube-like ring section as latching connection. Thus, the latching connection means for fixing the cooking plate by means of the short tubular ring portion are formed on a hob plate. The latching connection means are formed separately from the hotplate body or are at least a part which is separate from the hotplate body.

This latching connection holds the cooking plate on the hob plate of the hob when the locking connection means additionally supported on the hob plate, advantageously on the underside. In this case, a bias voltage for the support is advantageously provided, in particular to keep the locking connection without play.

Since usually a receiving opening for the cooking plate on the hob plate is only slightly larger than said short tubular ring portion, thus distributed in this outdoor area attachment can be achieved as a snap connection for the hotplate on the hob plate. Since in this area a said outer edge of the hotplate body rests against the cooking surface plate, in particular at its upper side around the receiving opening, advantageously with a known intermediate cover ring, also called raid edge, so takes place an attachment of the hotplate to the hob plate, which is not worth mentioning Forces bring in the hotplate body, in particular no forces that could deform this or could negatively affect the flatness of the top negative. A locking connection has the further possible advantage that it can be produced without tools in advantageously exactly predetermined configuration. Furthermore, the locking connection can be designed so that it can also be solved without tools or at least with simple tools and can be easily solved for later disassembly or repair. At the cover or raid edge also the aforementioned bias can be incurred or collected on this, advantageously by its shape.

In an advantageous embodiment of the invention, the recessed locking recesses or the protruding locking projections of the ring portion are provided on the outside thereof. Thus, they are located approximately below the edge of the receiving opening, and said distortion-free attachment of the hotplate to the hob plate is quite possible. Alternatively, they could also be provided on the inside, but then the design of the mounting ring is predictably more complicated.

In a further embodiment of the invention, a plurality of said recesses or latching projections may be provided in a direction away from the top of the cooking plate in a row and, so to speak, have different distance to the top. As a result, quasi different locking depths can be provided, whereby it is possible to produce the locking connection with different insertion depth of the cooking plate with ring portion in the receiving opening of the hob plate. Alternatively, a plurality of successively spaced locking projections or recesses could be attached to the mounting ring, but what makes its formation predictably much more complicated.

In a first basic embodiment of the invention, the cooking plate device has a fastening ring as a latching connection means with which the cooking plate is attached to the hob plate. This mounting ring is formed separately from the cooking plate and has a continuously encircling ring body with a shape corresponding to the circumferential short tubular ring portion, so round or circumferential, advantageously larger or smaller diameter. The fastening ring has at least one protruding latching projection and / or a recessed latching recess on the annular body. These act together with the recessed latching recesses or protruding latching projections on the short tubular ring portion and thus form a latching connection between the mounting ring and tube section. This locking connection by means of fastening ring holds the hotplate on the hob plate of the hob when the mounting ring is additionally supported on the hob plate and the underside. In this case, the bias is advantageously provided for supporting, in particular to keep the locking connection without play.

In a further embodiment of the invention, the fastening ring may have a diameter which is greater than that of the ring portion. The diameter may be 1% to 5% larger, in other words, a radial distance between the two parts may be between 1 mm and 10 mm. The distance of the mounting ring to the ring portion should not be too large, so that no disturbing offset between the parts may arise. At the same time a locking effect should be possible as well as possible. In particular, the continuously encircling annular body has said spacing.

In an advantageous embodiment of the invention, at least two protruding locking projections are provided on the annular body of the fastening ring. Thus, corresponding recesses are provided on the ring portion, which each facilitates the production of the two parts. In particular, when the hotplate body is manufactured in a known manner by casting, it is easier to provide thereon recesses, for example as milled depressions or grooves or groove. These can be retrofitted by material removal, which is easier than designing a mold specifically. In particular, existing molds can continue to be used in this way.

Said locking projections on the encircling annular body of the fastening ring can advantageously be provided as separate parts and attached thereto. Particularly advantageous annular body and locking projections are formed of metal and are joined together by welding. Even if a recess on the annular portion of the hotplate body is provided circumferentially or continuously, it is recommended that the locking projections do not form continuously, so that they are preferably provided evenly distributed for a uniform and secure latching connection. The locking connection is significantly better with improved locking function of the locking projections of the mounting ring, if there are individual locking projections, which are formed separately from each other. Advantageously, three, four or six such locking projections are provided.

Alternatively, it is possible to produce the fastening ring in one piece, as an annular body and preferably latching projections. The latching projections may be bent out of the other ring body, for example.

Preferably, the protruding locking projections of the fastening ring on a partial ring segment shape. Their length can advantageously be at least 5% of the circumference of the fastening ring, more preferably about 8% to 15% or 2 cm to 5 cm.

Are fastening body and locking projections of the mounting ring originally separate parts, it is possible to produce them from different material thicknesses. Thus, the fastening ring can be relatively stable and rigid, in particular, for a secure and stable mounting of the cooking plate to the hob plate. The latching projections may be formed of thinner and more elastic material, which has a certain spring action for a good automatic production of the latching connection.

In an advantageous embodiment of the invention, the locking projections seen in the longitudinal direction on an angular cross-section. The cross section may have two legs, with a first leg pointing or extending as a fastening leg in the radial direction outwards. So it is, so to speak, parallel to the top of the hotplate body. With this side or an upper side of this fastening leg, a latching projection may be connected to the annular body in the aforementioned manner. A second leg of the locking projections may be bent as a locking leg at an angle between 95 ° and 135 ° thereto. When the fastening ring extends outwardly around the short tubular ring portion, the locking leg should point radially inward and away from the top of the hotplate body. So he is from the outside in locking recesses or locking projections of the pipe section. By said angle, a good latching action and thus a stable latching connection can be created, which loads the latching projections and especially the second latching leg mainly in one direction on the top of the hotplate body. Thus, the hotplate is held securely in the receiving opening of the hob plate.

In a further development of the invention, the second latching leg of the latching projections can form the radially innermost region of the fastening ring. Its radius may be 1 mm to 10 mm lower than that of the rotating ring body. It can be 0.5 mm to 2 mm or even 3 mm deep seen in the radial direction in the ring portion engage in corresponding recesses.

In an advantageous embodiment of the invention, the annular body may have an angled cross-section, advantageously as zweischkliger cross-section. A first leg may extend approximately parallel to the protruding ring portion. A second leg may be bent radially outward at an angle thereto, for example at an angle between 70 ° and 110 °, advantageously approximately at right angles, so that the second leg points or runs approximately in the radial direction. A material thickness of the mounting ring can be between 1 mm and 3 mm. A material thickness of the locking projections on the fastening ring may be smaller, for example between 0.3 mm and 1.5 mm.

At a fastening ring described above, the locking projections described may be provided or attached to a region, in particular at a plurality of equally distributed areas. In particular, they are provided as separate parts on an underside of the radially outwardly bent second leg of the fastening ring. So they form part of the mounting ring, which is farthest from the hob plate so that the rotating ring body of the mounting ring can rest against the underside of the hob plate.

In a further second basic embodiment of the invention, the latching connection means have at least two separate latching clips for the hotplate in order to secure it to the cooktop by means of the short tubular ring section. In this case, a latching clip advantageously has a resilient latching limb or a latching section, which corresponds to the aforementioned latching projection on the fastening ring, for a latching connection with the recessed latching recess or with the protruding latching projection of the short tube-like ring section or to engage therein. The locking clip also has a mounting leg or a mounting portion, with which it is supported from below against the hob plate.

In a further development of the invention, a locking clip may have a pressing portion which adjoins the fastening leg or the fastening portion. The pressing portion, which may also be a pressing leg, is preferably provided at a free end relative to the locking leg or the latching portion. He can pass through a receiving opening of the hob plate. By a concern or pressing on the outside of the ring portion can be prevented so that the locking clip rotates or is rotated, and thereby could solve the locking connection.

Recessed recesses are preferably attached to the outside of the protruding ring portion of the hotplate body. They may be at least 40% of the height of the ring portion remote from the bottom of the hotplate body or away from the connection of the protruding ring portion to the hotplate body. It is advantageous in about 60% to 70% of the height. Thus, the locking recess should not be just at the extreme end of the ring portion, but at the same time not too close to the hob plate to allow a reliably producible latching connection. Preferably, this distance from the free end of the protruding ring portion may be at least 1 mm, more preferably at least 4 mm.

As has been explained above, the recessed latching recesses on the outside of the ring section are advantageously not formed circumferentially as a circumferential groove, but it can be provided interruptions. A length of the recesses on the outside of the protruding ring portion should total between 30% and 70% of the circumference of the ring portion. Although this does not matter for a latching connection with a plurality of isolated latching projections of the mounting ring, since the latching projections can engage in a circumferential recess as a groove everywhere, so a position assurance or rotation can be achieved, as well as easy for a person to be recognized default position. Thus, the isolated recesses may for example have a length which is at most 1% to 10% longer than a length of the protruding locking projections on the annular body. In a further embodiment of the invention, it is also possible that such a rotation is provided only for a single recess on the ring portion and a single locking projection on the mounting ring, which satisfies this function sufficiently.

Alternatively, as explained above, it may be provided that a continuous circumferential groove is provided on the outside of the ring section, which groove forms the recessed catch recess for a plurality of latching projections of the fastening ring. This can be made very easily by twisting off the hotplate body.

For mounting or construction of the hob according to the invention, which has a hob plate with at least one receiving opening, a prescribed hotplate is introduced from the top of the hob plate into this receiving opening until it rests against the top. It can be provided that previously a peripheral cover ring has been mounted as a raid edge on the cooking plate, which has an approximately inverted U-shaped cross-section. Such a cover ring is according to the known prior art below a projecting in the radial direction over the ring portion edge of the hotplate body and is in the radial direction over something about this. With a radially outer and longer leg of the cover ring is located on the top of the hob plate around the receiving opening around, in particular at the top of a raised portion in the middle of the receiving opening. There he is force applied after attachment and forms a protection against the entry of dirt and / or liquid between the hotplate and hob plate.

To attach the cooking plate to the hob plate then a mounting ring, as described above, from a bottom of the hob plate forth over the short tubular ring portion slipped over so that the mounting ring rests against the underside of the hob plate. With protruding locking projections or recessed locking recesses, it acts as a latching connection with recessed latching recesses or protruding latching projections of the short tube-like ring portion together so that the hotplate in the Receiving opening is attached to the hob plate. For this purpose, the latching projections and recesses must optionally be in a certain rotational position to each other, but this is easy to accomplish, for example, by markings on the parts. It can also be provided different lengths of locking projections and / or recesses, which make recognizable that only a single position allows the locking connection.

In the finished assembled hob can be provided that a part of the mounting ring, in particular of the annular body, protrudes with the above-described first leg through the receiving opening upwards. Thus, an additional centering and positionally accurate arrangement of the mounting ring can be done on the hob plate. This is covered by the preferred cover ring described above advantageous.

In a further embodiment of the invention can be provided that a recess or a projection is provided on the inner edge of the receiving opening. A corresponding projection or a corresponding recess may be provided on the fastening ring. This allows both a specification of the mounting position and, above all, an advantageous anti-twist device can be achieved. Here, a recess could be relatively easily punched out in the edge of the receiving opening during their production, for example by a correspondingly changed punching tool, alternatively, it can also be introduced later. At the mounting ring, a corresponding projection can be made, for example by bending out a section or a kind of tab, which then rests in the recess on the inner edge of the receiving opening.

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

eine Schnittdarstellung durch einen Ausschnitt eines Kochfelds gemäß der Erfindung mit einer ersten erfindungsgemäßen Rastverbindung einer Kochplatte an einer Kochfeldplatte,

Fig. 2

eine vergrößerte Schnittdarstellung durch einen Befestigungsring entsprechend Fig. 1,

Fig. 3

eine Draufsicht auf einen kompletten Befestigungsring entsprechend Fig. 2,

Fig. 4

eine Schrägdarstellung der Kochplatte aus Fig. 1 mit zwei umlaufenden Rastausnehmungen als Nuten,

Fig. 5

eine Schnittdarstellung durch die Kochplatte aus Fig. 4 in der Ansicht der Fig. 1,

Fig. 6

eine Abwandlung einer Kochplatte in einer Darstellung ähnlich Fig. 5 mit nur einer einzigen umlaufenden Rastausnehmung,

Fig. 7

eine Schrägdarstellung von unten einer weiteren erfindungsgemäßen Kochplatte mit nicht vollständig umlaufenden Rastausnehmungen,

Fig. 8

eine Draufsicht auf ein erfindungsgemäßes Kochfeld mit vier Kochplatten,

Fig. 9

eine Schnittdarstellung durch einen Ausschnitt eines weiteren Kochfelds gemäß der Erfindung mit einer zweiten erfindungsgemäßen Rastverbindung einer Kochplatte an einer Kochfeldplatte,

Fig. 10

eine Draufsicht auf einen Rastclip entsprechend Fig. 9,

Fig. 11

eine Draufsicht auf die Unterseite der Fig. 9 mit vier Rastclips zur Befestigung.

Embodiments of the invention are shown schematically in the drawings and are explained in more detail below. In the drawings show:

Fig. 1

a sectional view through a portion of a hob according to the invention with a first locking connection according to the invention a hotplate on a cooking plate,

Fig. 2

an enlarged sectional view through a mounting ring accordingly Fig. 1 .

Fig. 3

a plan view of a complete mounting ring accordingly Fig. 2 .

Fig. 4

an oblique view of the hotplate Fig. 1 with two circumferential recesses as grooves,

Fig. 5

a sectional view through the cooking plate Fig. 4 in the view of Fig. 1 .

Fig. 6

a modification of a hotplate in a representation similar Fig. 5 with only a single circumferential recess,

Fig. 7

an oblique view from below of another cooking plate according to the invention with not completely circumferential recesses,

Fig. 8

a top view of an inventive hob with four hotplates,

Fig. 9

a sectional view through a section of another hob according to the invention with a second locking connection according to the invention a hotplate on a hob plate,

Fig. 10

a plan view of a locking clip accordingly Fig. 9 .

Fig. 11

a top view of the bottom of the Fig. 9 with four locking clips for attachment.

DETAILED DESCRIPTION OF THE EMBODIMENTS

In the Fig. 1 shows a cooking hob according to the invention 11 in sections in side sectional view. The hob 11 has a hob plate 13 made of stainless steel sheet, which has a top 14 and a bottom 15. It could also be other materials such as enameled or painted sheet steel. For a hotplate device 20 according to the invention, a per se also usual increase 17 is provided, which, as shown in Fig. 8 can be seen, is rotationally symmetrical and has a pre-described receiving opening 18 in the middle. At this receiving opening 18, the hotplate device 20 is inserted and attached.

The hotplate device 20 itself has a hotplate 22 with a hotplate body 23 having a top 25 and a bottom 26. The top 25 is largely flat as a well-known hotplate. From the bottom 26 is a ring portion 28 from or is integrally formed, it is approximately at right angles to the top 25 and may be about 1 cm to 2 cm long in practice. Radially outside the ring portion 28 is a protruding Outer edge 29 is provided on the hotplate body 23. The cooking plate 22 is formed in principle as far as known in the art.

On an outer side 30, the ring portion 28 on top of each other two identically formed recessed locking recesses 32a and 32b, which form part of the invention and are not yet known. These can be done according to the Fig. 4 or 7 be educated. The locking recesses 32a and 32b are formed identically in principle and extend, so to speak, obliquely into the outer side 30 of the annular portion 28, for example at an angle of about 10 ° to 15 °. Their distance from each other can be a few millimeters, for example 3 mm to 6 mm.

Around the ring portion 28 extends around a mounting ring 35 which is formed of a plurality of parts. He has on the one hand a continuous rotating annular body 37, see also the enlarged detail of the Fig. 2 as well as the top view of Fig. 3 , The annular body 37 has an angular cross-section with a first vertical leg 38, which runs approximately parallel to the longitudinal direction of the annular section 28 or at right angles to the upper side 25 of the cooking plate 22. This first leg 38 is approximately at right angles in a second leg 39, advantageously achieved by one-piece production, preferably made of metal or thick sheet metal. On a lower side of the second leg 39, a latching projection 41 is provided, namely fastened, in particular welded in each case metallic training. The latching projection 41 has a first fastening leg 42, which extends parallel to the second leg 39 of the annular body 37 and is secured thereto, is advantageously welded firmly. A second latching leg 43 of the latching projection 41 is bent at an angle thereto, advantageously at an angle of about 100 ° to 110 °. The latching projection 41 is advantageously made of bent sheet metal, for example with a half thickness compared to the annular body 37, for example 1 mm to 2 mm. The length of the second locking leg 43 in cross section may be about 8 mm to 12 mm or even up to 15 mm.

From the top view of Fig. 3 It can be seen that four identical locking projections 41 are attached to the mounting ring 35, are advantageously welded firmly. They are equally distributed, but they do not have to be, each locking projection 41 is approximately as long as a distance between two adjacent locking projections. It is from the Fig. 3 It can also be clearly seen that the latching projections 41 lie radially inside the ring body 37 or engage further inwards. This is obviously advantageous for the attachment function.

In the hotplate device 20 of the hob 11 of Fig. 1 is located on the outer side 30 of the ring portion 28 below the outer edge 29, a circumferential cover ring 45, the one has approximately the reverse U-shaped cross-section. He is from even thinner sheet metal, advantageously stainless steel sheet, which is relatively resilient. Such cover rings 45 are known from the prior art and need not be explained in detail here. The cover ring 45 serves to create a visually attractive connection or protection against contamination and penetration of liquid and a corresponding transition between the cooking plate 22 and top 14 of the hob plate 13. The hotplate 22 is pressed over the cover ring 45 against the hob plate 13 and the top 14 thereof. In this case, it is held as a latching connection characterized in that the latching projection 41 engages resiliently with its locking leg 43 on the annular body 37 as a fastening ring 35 in the latching recesses 32b. The locking leg 43 can actually be bent in a slightly larger angle relative to the mounting leg 42 and thus radially inward so that it also engages securely in the recess 32a or 32b.

To produce the latching connection, a cooking plate 22 with a preassembled cover ring 45 is inserted over the ring section 28 from the upper side 14 into the receiving opening 18. It should be in a desired or predetermined rotational position. Then, at the bottom 15 of the hob plate 13 of the mounting ring 35 is guided over the ring portion 28, possibly also in exactly predetermined rotational position zuein other. While the annular body 37 protrudes with its first leg 38 through the receiving opening 18 so that it rests with the second leg 39 on the underside 15 of the hob plate 13 at the edge of the receiving opening 18, the lower end of the locking leg 43 of the locking projection 41 engages in the Detent recess 32b and holds the hotplate 22 thus fixed to the annular portion 28 against the hob plate thirteenth

As explained above, could on the mounting ring 35, advantageously on the annular body 37, a in Fig. 3 Dashed index projection 40 may be provided at a specific location. He can cooperate with an easily imaginable correspondingly formed recess on the inner edge of the receiving opening 18 such that it engages against rotation in this. If the fastening ring 35 in a similar form against rotation of the cooking plate 22 and its annular portion 28 is formed, a total of rotation can be achieved. Thus, a rotation of the mounting ring 35 relative to the hob plate 13 could be positively prevented and not only frictionally as in the Fig. 1 ,

This is better imaginable based on a design of a cooking plate 122 accordingly Fig. 7 , in which on an outer side 130 of the ring portion 128, although recesses 132a and 132b are provided adjacent to each other, but not completely circulate. The recesses 132a and 132b are formed only slightly longer than the Locking projections 41 and latching leg 43 according to Fig. 3 , so that they form a positive rotation with each other. By appropriate labeling on the cooking plate 122, for example, a recess 131 on the underside of the ring portion 128, an attachment of the cooking plate 122 can be carried out in exactly predetermined rotational position on a hob, thereby also a positive rotation is formed.

An anti-rotation of a cooking plate 22 on a hob plate 13 can not only by the configuration of the hotplate body 123 accordingly Fig. 7 or an index tab 40 accordingly Fig. 3 be reached, but also alone by friction by friction, when the four locking projections 41 and latching leg 43 according to the Fig. 3 in the recesses 32a or 32b according to the Fig. 4 engage the ring section 28.

The oblique representation of Fig. 4 the hot plate 22 shows how the two locking recesses 32a and 32b are formed circumferentially or as circumferential grooves. This is the easiest of the production ago and can be made by a turning operation on the self-fabricated hotplate body 23. Thus, normal hotplates can be processed according to the invention or it can be used in known molds, so that no large investment costs are necessary.

In the sectional view of Fig. 5 is again the hot plate 22 from the Fig. 1 shown removed. It can be seen how the bottom of the hotplate body 23 protrudes with a flat top 25 and outer edge 29 of the ring portion 28, its circumferential configuration is from the Fig. 4 good to see. Here are particularly clearly the two recesses 32a and 32b to recognize each other, which are formed as inclined recesses. Their distance from each other is relatively small, so that a relatively fine gradation of locking depths is possible. In this embodiment, as based on Fig. 1 is easy to imagine, with a slightly lower cover ring 45 or shorter locking leg 43, the upper recess 32a are used. It could also easily be provided more recesses.

In the modification to it according to Fig. 6 is provided with the cooking plate 222 with the same cooking plate body 223 together with top 225 and bottom 226 and outer edge 229 and ring portion 228 only a single recess 232. It is provided in the same place as at Fig. 5 the lower recess 32b. This embodiment is to be fastened in a single position by means of latching connection.

It may further be provided that in the locking leg 43 openings are provided at a distance from each outer edge, alternatively also at the lower edge, through which a tool can be introduced, for example, a small screwdriver to release the locking connection again. For this purpose, the locking leg 43 can be bent radially outwards and thus out of the recess 32b. If this is done for all locking legs 43 of the locking projections 41 together with corresponding recesses, for example, one after the other, the mounting ring 35 can be removed again and the hot plate 22 can be removed, for example, be replaced.

In the Fig. 8 is in plan view of an inventive hob 11 to see. In a per se rectangular cooktop plate 13 with top 14 four hotplate devices 20 and four hotplates 22 are installed, in the middle of each provided increases 17. But it could also be less hotplate devices 20 on a hob, possibly even a single Hotplate device 20 on a hob.

As an easily imaginable alternative 28 recesses could also be present on the inside of the ring portion, and the locking legs could then grab from the outside inwards in the manner of U-shaped mounting claws. These should then also project outwards and rest on the underside 15 of the hob plate 13.

In the Fig. 9 to 11 a further cooking hob according to the invention 311 is shown in a second basic embodiment of the invention with a further cooking plate device according to the invention 320 partially shown in side sectional view fragmentary Fig. 1 , The cooktop 311 has a cooktop panel 313 with a top surface 314 and a bottom surface 315 that has an elevation 317 that is rotationally symmetric with a central receiving opening 318 in the elevation. From the top of a hot plate 322 with a hotplate body 323 and a top 325 and a ring portion 328 including cover 345 attached to the hob plate 313. The cooking plate 322 corresponds to that of Fig. 1 , wherein the short circumferential ring portion 328 is integrally formed on the underside 326 and on its outer side 330 has two groove-like recesses 332 a and 332 b, which extend at least partially in the circumferential direction.

For fixing and fixing the cooking plate 322 on the hob plate 313 a locking clip 341 is provided in sectional view, which advantageously consists of thin sheet metal with a thickness of, for example, 0.7 mm to 1.5 mm and has a certain shape. With a radially outwardly projecting mounting leg 342 it is supported against the bottom 315 of the hob plate 313 close to the receiving opening 318 and against the lower inner edge. Downwards is an elongated locking leg 343, similar to the locking projection 41 of the mounting ring 35 according to Fig. 1 , The locking leg 343 is in the lower recess 332b locked and by supporting against the bottom 315 of the hob plate 313 he holds the hot plate 320 fixed to the hob 311st

So that the locking clip 341 remains reasonably stable in its position and not tilted too much, here in the counterclockwise direction, it projects with an upper Andrückschenkel 344 through the receiving opening 318 and lies on the one on the inner edge. On the other hand, the Andrückschenkel 344 is supported with its free end against the outside 330 of the ring portion 328. Thus, the locking clip 341 is fixed at three points and holds or pulls the hotplate 322 not only in the longitudinal direction of the ring portion 328 to the surface of the hob plate 313 out, but centered the ring portion 328 still within the receiving opening 318th

As seen from the bottom of the Fig. 11 can be seen, advantageously several, in particular four, such locking clips 341 are provided. They are advantageously distributed equally, but they do not have to be. Thus, even if in comparison to the previous embodiment, the circumferential annular body 37 of the mounting ring 35 is missing, which has held all locking projections 41 so to speak, so a stable attachment of the cooking plate 322 and the hotplate device 320 on the hob 311 done. Each of the locking clips 341 holds for itself and automatically. The attachment by means of the locking clips during the assembly process of the hob 311 may indeed several handles are necessary. At the same time, individual locking clips 341 may be easier to attach than a single integral mounting ring 35 having a plurality of locking projections thereon.

Under certain circumstances, the said locking clips of suitable resilient stainless steel or the like. be worked out and bent, as it is known for such locking clips, so that their production is very inexpensive. From the top view of Fig. 10 on the locking clip 341 should be seen as the locking leg 343 merges upward into the mounting leg 342, which then in turn followed by the Andrückschenkel 344. Such a locking clip can be easily bent from a corresponding metal sheet. It can be used a sheet of a single thickness, and as the sectional view of the Fig. 9 shows, the forming is also relatively easy. Of course, more complicated shapes may be provided, for example, with a folding of a sheet on each other as a doubling of the material thickness for increased strength. Just by the U-shaped bend on the mounting leg 342 with some distance between a spring effect is achieved approximately perpendicular to the surface of the hob plate 313 for better attachment of the cooking plate on the hob 311.

Even with such individual locking clips 341, it is quite possible to achieve an anti-rotation of the cooking plate 322 on the hob 311. For this purpose, as has been explained above, advantageously the latching recesses 332a or 332b do not circulate continuously in one piece, which in principle also applies to the receiving opening 318. At the receiving opening 318 also projections or recesses could be provided to prevent the locking clip 341 from slipping in the circumferential direction. But this is easy to imagine and need not be explained further here.

Claims (15)

Hotplate device with a cooking plate,
wherein the cooking plate comprises: a hotplate body having a flat top and a bottom, a short tubular ring portion on the underside of the hotplate body, the short tubular ring portion ∘ is located near an outer edge of the hotplate body at the bottom, ∘ is at least partially circumferential, ∘ protrudes away in one direction or perpendicular to the top of the bottom, marked by the short tube-like ring section has on an inner side and / or an outer side at least one recessed latching recess or at least one protruding latching projection, Latching connection means for interacting with the at least one recessed latching recess or the at least one protruding latching projection of the short tube-like ring section as latching connection, the latching connection means are formed separately from the hotplate body, - The locking connection means are designed for attachment of the cooking plate by means of the short tubular ring portion on a hob plate. Hotplate device according to claim 1, characterized in that the deeper recesses or the protruding locking projections of the ring portion are provided on the outside of the ring portion. Cooking plate device according to claim 1 or 2, characterized by several deepened recesses or protruding locking projections on the ring portion behind each other in the direction of producing the locking connection or in the direction away from the top of the hotplate body, wherein the deepened recesses or protruding locking projections along this direction respectively different distance to the top of the hotplate body. Hotplate device according to one of the preceding claims, characterized in that the latching connection means for a fastening ring for the hotplate for Attachment by means of the short tubular ring portion on the hob plate, wherein the mounting ring comprises: a continuously encircling annular body, - At least two protruding locking projections and / or recessed latching recesses on the annular body for cooperation with the recessed latching recesses or the protruding latching projections of the short tubular ring portion as a latching connection, wherein preferably the annular body has a diameter which is greater than that of the annular portion, wherein in particular a radial distance is 1 mm to 10 mm. Cooking plate device according to claim 4, characterized in that at least two protruding locking projections are provided on the rotating ring body, which are attached as separate parts to the rotating ring body, in particular made of metal and are welded to the ring body. Hotplate device according to claim 4 or 5, characterized in that on the annular body, the protruding locking projections or the recessed locking recesses are equally distributed, in particular four protruding locking projections. Hotplate device according to one of claims 4 to 6, characterized in that the protruding latching projections on the mounting ring part ring shape and in particular each amount to at least 5% of the circumference of the mounting ring as a length. Cooking plate device according to one of claims 4 to 7, characterized in that the latching projections have an angular cross-section with two legs, wherein a first mounting leg in the radial direction facing outwards, along one side of the annular body and is connected to this side with the annular body, wherein a second locking leg is bent at an angle between 95 ° and 135 ° thereto and pointing radially inwards and away from the top of the hotplate body, wherein preferably the second locking leg of the locking projections forms the radially innermost portion of the mounting ring, wherein in particular the second locking leg a 1 mm to 10 mm smaller radius than the rotating ring body. Hotplate device according to one of claims 4 to 8, characterized in that the annular body has an angled cross section, in particular a zweischkligen cross section, wherein a first leg is parallel to the protruding ring portion and a second leg is bent at an angle thereto radially outward. Hotplate device according to one of claims 4 to 9, characterized in that at a region of the fastening ring, in particular on an underside of the radially outwardly bent second leg of the fastening ring according to claim 8, the protruding locking projections are attached. Hotplate device according to one of claims 1 to 3, characterized in that the latching connection means comprise at least two separate locking clips for the cooking plate for attachment by means of the short tubular ring portion on the hob plate, wherein a locking clip has a resilient locking leg or latching portion for latching connection with the recessed latching recess or with the projecting locking projection of the short tubular ring portion, and a mounting leg or attachment portion for support against the cooking plate from below, in particular a locking clip having a pressing portion then to the mounting leg or mounting portion, preferably at a free end opposite the locking leg or latching portion, for reaching through through a receiving opening of the hob plate. Hotplate device according to one of the preceding claims, characterized in that on the outside of the protruding ring portion recessed locking recesses are mounted, preferably at least 40% of the height of the ring portion away from the underside of the hotplate body or away from the connection of the protruding ring portion with the hotplate body, in particular the recessed recess has a distance of at least 1 mm, preferably at least 4 mm, from the free end of the protruding ring portion. Hotplate device according to one of the preceding claims, characterized in that a recessed recess on the outside of the ring portion is not formed continuously encircling, but has interruptions, wherein preferably a length of the recesses on the outside of the protruding ring portion is at most 1% to 10% longer than a length of the projecting locking projections on the annular body. Hob with a hob plate having at least one receiving opening and at least one hotplate device on the hob plate, wherein the hotplate device according to one of the preceding claims is formed with a cooking plate, characterized in that the hotplate is inserted from an upper side of the hob plate into the receiving openings and at the upper side abuts, wherein the short tube-like annular portion protrudes through the receiving opening, wherein a fixing ring from the underside of the hob plate forth over the short tubular ring portion is so attached to attach the cooking plate to the hob plate that the fixing ring, in particular with the rotating annular body , supported on the underside of the hob plate and the protruding locking projections or recessed locking recesses of the mounting ring with the recessed locking recesses or protruding locking projections of the short tubular R ingabschnitts the cooking plate interact in such a way as latching connection, that the cooking plate is fixed in the receiving opening on the hob plate. Hob according to claim 14, characterized in that just below a top of the cooking plate, a circumferential cover ring extends around the short tubular ring portion which rotates above the top of the hob plate and rests with a lower edge on this top, where he after the latching connection between the Fastening ring and the short tube-like ring portion kraftbeaufschlagt applied to this top.

Images