EP0567779A1 - Cooking plate - Google Patents

Abstract

The invention relates to a cooking plate which can consist of glass, glass ceramic or similar materials. A surrounding frame for the cooking plate serves on the one hand as edge protection and as the border of the upper plate edge. On the other hand, the cooking plate is adhesively bonded to the surrounding frame on the edge side. The surrounding frame consists of a holding frame part and a visible frame part which is separate therefrom. The holding frame is a standardised component and holds the cooking plate. The visible frame serves as edge protection and as upper lateral border. The holding frame part has a narrow profiled frame which is adhesively bonded to the underside of the cooking plate and which is designed for detachably receiving the supporting part of the holding frame, e.g. by means of an insertion connection. <IMAGE>

Description

The invention relates to a cooktop or the like. Made of glass, glass ceramic or a similar material, with a support leg of a holding frame arrangement glued to the lower edge of the plate, which is used to fasten the plate in a hob or the like, which has a viewing frame designed separately from the holding frame arrangement for edge protection and has lateral closure of the plate, serves.

Hob plates made of glass, glass ceramic or a similar material require a stable, easy-to-maintain, mechanical holder (fastening) in a hob in combination with effective edge protection of the very brittle plates and a visually appealing and easy-to-clean end to the edge of the hob. This applies to both built-in devices and free-standing devices and accordingly when using the aforementioned plates as a heating or grill surface.

In order to ensure the fastening, the edge protection and the lateral closure of the hob plate, frame means enclosing the plate are provided in a known manner, which are designed in various ways according to the prior art.

In the arrangement according to EP-O 162 621 A2, a circumferential angular metal frame part is provided, one leg of which forms the side closure and the other leg has a strip-like projection, a flange part which engages under the edge of the hob plate. A circumferential seal is also provided with a U-shaped profile part, which comprises the flange part and a upstanding collar part, which seals the space between the face of the panel and the end leg of the angled frame part in a sealed and flush manner with the panel and top edge of the frame while ensuring edge protection. The hob plate is glued into the joint between the collar part and the upper leg of the profile part of the seal and lies on the flange part. After folding down the lower leg of the profile part, the plate can be removed from the hob together with the seal. The angle metal frame part is mechanically fastened in the hob with conventional means.

With such a construction, the mounting or fastening of the plate and its edge protection and the lateral closure to the edge of the hob are effected by a single frame part. As a result, an adapted frame part is necessary for each version of the hob. However, since there is a need for the greatest possible flexibility in the frame selection on the market, this causes considerable problems in terms of costs and storage for the cooktop manufacturers.

In addition, the known cooktops with a one-piece mounting frame have the disadvantage that a mounting frame constructed for a free-standing cooker cannot simultaneously be used as a frame for a built-in cooker and vice versa. Therefore, a redesign of the border frame is required for both a standing stove and a built-in stove, additional and expensive production tools also being required.

The same disadvantages apply to the hob frame construction according to DE 28 19 118 A1 to, which also provides only a single frame part, which is composed of (at least) two different profiles inseparably. The profiles are shaped so that on the one hand the side closure with edge protection is guaranteed and the plate can be held on a laterally protruding support web.

The support web is surrounded by a U-shaped tab and glued to it. The flap is glued to the upper leg with the edge of the underside of the plate. The adhesive also fills the space between the face of the panel and the end frame part, thus ensuring the necessary edge protection. Due to the material selection for the profile-like tab (e.g. stainless steel or aluminum), a very good, mechanically firm connection can be achieved with the hob plate. The (only) frame part forms together with the hob plate a fixed unit which can be mechanically fastened in the hob in the usual way.

Similar constructions with an integral frame are shown in DE 31 26 013 C2 and DE-U 86 24 136 and 77 18 108.

The aforementioned problems are solved by a two-part frame construction for the cooktop plate mentioned at the outset according to DE 31 04 114 C2 and DE 77 19 859 U.

This construction has a holding or fastening frame with a support leg for the lower edge of the hob, with which it is either glued (DE-C2) or on which it rests with the interposition of a seal (DE-U).

Separately, a view or sealing frame is provided, which ensures edge protection and forms the side closure. The holding and viewing frames are detachably connected to one another and are mechanically fastened in the hob in the usual way.

This principle of dividing the frame allows both damaged or unsightly frames to be replaced by new ones, as well as differently colored frames and / or frames with different profile shapes for the same hob design, which can be connected to the holding frame in a simple and cost-effective manner, providing great flexibility in the frame selection given is.

Furthermore, the frame can be flexibly adapted to both standing cookers and built-in stoves with the greatest possible standardization.

This two-part design of the border frame thus enables an advantageous modular system for cooktop panels made of glass / glass ceramic or similar materials for simple and flexible adaptation to different product requirements when using largely standardized frame components, preferably for use in cookers and built-in hobs as edge edging / edge protection for the cooking surfaces and as a basic element for mounting / fastening additional hob components. The stoves can be electric or gas operated. The modular frame system is very flexible and can be adapted to different requirements in a simple, very inexpensive way, while largely maintaining the frame components and the fastening elements for other components (radiators, residual heat indicator, etc.).

Gluing the support leg of the holding frame to the glass or glass ceramic plate requires special know-how in terms of material selection and adhesive technology, which is not available from all cooktop manufacturers. In these cases, the known holding frames, which are relatively elongated and thereby form the side walls of the hob, must be glued to the manufacturer of the hob plates, so that a very bulky product is obtained which, disadvantageously, requires very voluminous, complex packaging.

The invention is therefore based on the object, starting from the cooktop plate mentioned at the outset, to design it in such a way that the support leg can be securely glued to the plate without bulky goods being produced.

This object is achieved according to the invention in that the support leg of the holding frame arrangement (10) is formed by a profile frame (10a; 10b; 10c) of low overall height, which is designed to releasably receive the supporting part of the holding frame arrangement (carrier part 11).

A first advantage of the invention lies in the saving of transport volume during shipping.

In the hob plate according to the invention, the plate only needs to be packed with the narrow profile frame glued on. The remaining parts of the holding frame only need to be inserted into the profile at the hob manufacturer.

Another advantage is that only the profile frame that is glued to the hob has to be made of stainless steel. The others Components for the substructure can be made of simple and inexpensive sheet steel (which is not suitable for gluing). This enables considerable cost savings.

The connecting techniques known to the person skilled in the art can be used for releasably receiving the carrier part in the profile frame. A particularly advantageous simple construction results from the fact that the receiving end of the support part and the profile frame are designed such that they can be mechanically connected to one another by means of a plug connection.

The specialist also has a number of options for the profile frame. A particularly simple connection technique results from the fact that the profile frame is designed with a cross section in the form of a lying U , one leg of which forms the support leg, a flange of the support part being insertable into the U-profile.

The design can be such that the U-profile is glued open to the face of the panel.

The design can also be such that the U-profile is glued open towards the middle of the plate and the outside of its base is flush with the end face of the plate.

These two options open up different mounting options for the holding frame in the hob.

The profile frame is expediently glued flush with the face of the plate.

The legs of the U-shaped profile frame do not necessarily have to run parallel to each other. Rather, the legs can, starting from the base of the U-shaped cross section, run divergently in that the lower free leg forms an acute angle with the upper leg glued to the plate. The lower leg can also be angled downward at its front end in order to form a wider insertion opening for the flange of the holding part.

The profile frame can be made in one piece all around, but in several parts. In particular, the frame can also consist of several sections which are arranged distributed over the circumference of the plate.

A number of designs are possible for the viewing frame. Designs are particularly advantageous in which the viewing frame has angled cover collars following the upper end of a central web, which can be designed in different ways and which are connected in different ways with the hob plate or the stove wall or the worktop in a built-in recess stand. Advantageous refinements are characterized in the subclaims.

The invention is explained in more detail with reference to exemplary embodiments shown in the drawings. This results in further refinements and advantages of the invention.

Fig. 1

eine Kochmulde im Schnitt mit einem Einfaßrahmen für einen Einbauherd,

Fig. 2

den linken Randbereich der Kochmulde nach Fig. 1, jedoch mit einem Einfaßrahmen für einen Standherd,

Fig. 3

den Randbereich einer Kochmulde entsprechend Fig. 1 im Schnitt mit einer anderen Ausführung des Sichtrahmens,

Fig. 4

den Randbereich einer Kochmulde entsprechend Fig. 2 im Schnitt mit einer anderen Ausführung des Sichtrahmens,

Fig. 5

einen vergrößerten Ausschnitt aus den Fig. 1-4 im Bereich des Überganges zwischen Halterahmen und Kochfeldplatte, mit Darstellung des an der Plattenunterseite angeklebten Profilrahmens mit eingestecktem Trägerteil des Halterahmens,

Fig. 6

eine Variante der Steckverbindung nach Fig. 5 mit vollständig abgekantetem unteren Schenkel des Profilrahmens,

Fig. 7

eine weitere Variante der Steckverbindung nach Fig. 5 mit nur teilweise abgekantetem unteren Schenkel des Profilrahmens,

Fig. 8 und 9

jeweils ausschnittsweise einen Randbereich einer Kochmulde in idealisierter Schnittdarstellung mit unterschiedlichen Ausbildungen der Abdeckkragen des Sichtrahmens und jeweils verschiedenen Varianten,

Fig. 10 bis 12

jeweils ausschnittsweise einen Randbereich einer Kochmulde in idealisierter Schnittdarstellung mit sichtbarer, nachträglich aufgebrachter Klebenaht zwischen Sichtrahmen und Keramikplatte mit unterschiedlichen Varianten hinsichtlich des Kragens des Sichtrahmens,

In Fig. 1 ist eine Kochmulde 1 eines Einbauherdes dargestellt, die in einer Arbeitsplatte 80 eingebaut ist. Die Kochmulde weist ein Kochfeld in Form einer Glaskeramikplatte 30 auf. Für derartige Kochfelder können in bekannter Weise auch Glasplatten bzw. Platten aus ähnlichen Materialien verwendet werden. Die Kochmulde wird nach innen von einem Kochmuldengehäuse begrenzt, deren Elemente später noch erläutert werden.Show it:

Fig. 1

a cooktop in section with a frame for a built-in cooker,

Fig. 2

the left edge area of the hob according to FIG. 1, but with a border frame for a standing stove,

Fig. 3

1 in section with a different design of the viewing frame,

Fig. 4

2 in section with a different embodiment of the viewing frame,

Fig. 5

1 to 4 in the area of the transition between the holding frame and the hob, with an illustration of the profile frame glued to the underside of the plate with an inserted support part of the holding frame,

Fig. 6

5 with the completely bent lower leg of the profile frame,

Fig. 7

5 with a partially bent lower leg of the profile frame,

8 and 9

sections of an edge area of a hob in an idealized sectional view with different designs of the cover collar of the viewing frame and different variants,

10 to 12

sections of an edge area of a hob in an idealized sectional view with visible, subsequently applied adhesive seam between the viewing frame and ceramic plate with different variants with regard to the collar of the viewing frame,

In Fig. 1, a hob 1 of a built-in stove is shown, which is installed in a worktop 80. The hob has a hob in the form of a glass ceramic plate 30. Glass plates or plates made of similar materials can also be used for such hobs in a known manner. The hob is limited on the inside by a hob housing, the elements of which will be explained later.

A two-part frame, which is composed of a holding or fastening frame 10 and a viewing frame 20, serves to hold the glass ceramic plate 30 and to protect its edges.

The holding frame 10 is C-shaped in cross-section with a vertical central web 11 forming the side walls of the hob housing. Furthermore, the fastening frame 10 has an angled connection flange 12 which is inserted into a profile frame 10a in the form of a lying U. This profile frame is connected with its upper leg, which forms the support leg for the hob plate 30, via an adhesive layer 60 to the lower edge of the glass ceramic plate 30. This connector is particularly clear from the 5 shows an enlarged detail. The holding frame 10 is screwed to a base plate 40 of the hob housing via a connecting flange 13 which is angled downwards. The radiators of the hob are arranged on this base plate 40, of which only one housing 41 is shown for the sake of simplicity. The other components, such as residual heat indicators and the like, are also conventionally arranged on the base plate 40. A housing part 40a, which represents the base part of the hob housing, is also connected to the connecting flange 13 below the base plate 40.

The view frame 20 also has a profile in the installed position of a central web 21, whose (circumferential) wall formed therefrom comprises the side walls formed by the central web 11 of the fastening frame 10 with almost no play, whereby the position of the two frame parts 10 and 20 is fixed to one another, so that both parts can be easily screwed together.

Following the upper end of the central web 21, the viewing frame 20 has an inwardly angled cover collar 22 which covers the upper edge of the glass ceramic plate 30 and forms the end of this.

1 designed additionally for a built-in cooker has a cover collar 23 which is angled outwards and which forms the end with the worktop 80, following the upper end of the central web 21.

The cover collars 22 and 23 serve, on the one hand, to protect the edges of the hob plate 30 and form them on the other hand the conclusion to the upper edge of the plate and to the worktop.

As can be seen from FIG. 1, the central web 21 of the viewing frame projects a little above the upper edge of the cooktop plate 30, the two cover collars being bent in a ramp shape toward the top of the cooktop or worktop. The individual design options for the formation of the cover collar will be explained later (FIG. 8).

In contrast to Fig. 1, Fig. 2 shows a built-in hob 1, which also has a two-part frame consisting of the holding frame 10 and the viewing frame 20. 1, with its flange 12, is inserted into a profile frame 10a, which is glued to the hob plate.

Comparing the two figures with respect to the holding frame 10 shows that both frames 10 are identical. The holding frame 10 thus represents a component that remains the same for all versions of a stove and is therefore a standardized component. Only the viewing frame 20 has to be adapted to the different versions of a stove.

The constructed for the standing hearth frame 20 of FIG. 2 forms the upper visible panel, which is held in a form-fitting manner. For this purpose, lower legs 25 of the viewing frame 20 are hooked into hooks 90 of the lower visible stove cladding 25a, the lower cladding 25a in turn being screwed onto the holding frame 10. Out For reasons of assembly, the viewing frame 20 consists of four individual side parts which can be screwed together.

In contrast to FIG. 1, where the viewing frame 20 is screwed directly to the holding frame 10, the viewing frame 20 in FIG. 2 is therefore indirectly connected to the holding frame 10 via the hooks 90 of the lower cladding 25a.

The viewing frame 20 of FIG. 2 also has, following the upper end of the central web, a cover collar 22 which is angled toward the hob plate 30 and whose detailed design will be explained later in a comparative manner (FIG. 9).

1 and 2, certain embodiments of the connection of the inlet frame parts 10 and 20 to one another and to the base plate 40 or the base part 40a and the other hearth wall 25a (in the case of FIG. 2) are shown. A number of possibilities are available to the expert here. In the case of FIG. 1, for example, it is conceivable to pull the center web 21 of the viewing frame down to the bottom of the hob and connect it there to the holding frame and the base part 40a.

In the embodiments according to FIGS. 1 and 2, the U-profile frame is open towards the hob edge. It is also possible to glue it offset by 180 ° so that the U opening points towards the center of the plate. This variation allows different attachments in the hob.

3 and 4 show a border frame which is easy to clean in terms of hygiene. Here is located between the frame 20 and the Side edges of the glass ceramic plate 30 a circumferential seal 50, the upper surface of which connects the upper edge of the glass ceramic plate 30 flush with the inner upper edge of the viewing frame 20. The detailed training will be explained later in comparison (Fig. 11 and 12).

In the embodiment according to FIG. 3 - a built-in hob - the cover collar 23 is angled flush with the plate surface, towards the worktop 80, whereas in the case of FIG. 4 - standing stove - the cover collar 22 of the viewing frame 20 is initially flush with the plate surface and in front Reaching the plate edge is angled downwards at right angles. This creates a smooth, flat surface that is easy to keep clean.

Details of the plug connection between the U-profile frame 10a glued to the underside of the plate and the connecting flange 12 of the carrier part 11 of the holding frame 10 can also be seen in FIG. 5.

A number of known possibilities are available to the person skilled in the art for the seal 50. For example, an appropriate adhesive can be used to produce the circumferential seal.

5, the two legs of the U-profile frame 10a run completely parallel to each other. Fig. 6 shows an embodiment with a profile frame 10b, the lower leg, opening the U-profile, is more or less folded, the connecting flange 12 of the support member 11 of the holding frame 10 is to be designed accordingly in order to secure a positive fit in the connector to reach.

Correspondingly, FIG. 7 shows an embodiment of a plug connection according to FIG. 5, with a profile frame 10c, the lower leg of which is folded only partially, opening the U profile. Here, too, the connection flange 12 of the carrier part must be appropriately adapted in shape.

The variants according to FIGS. 6 and 7 - like the embodiment according to FIG. 5 - are not limited to a specific embodiment of the hob or the associated viewing frame.

In the illustrated embodiments according to FIGS. 5-7, the profile frames 10a, 10b, 10c are glued to the plate such that the ends of the legs are flush with the end face of the plate 30. The arrangement can also be made so that the profile base is flush with the plate face, i.e. the profile is open towards the inside of the panel (to the right in the figures).

The profile frames 10a, 10b, 10c can be designed as a one-piece frame that completely encompasses the circumference of the hob plate 30. If the cooktop design or other requirements require it, the profile frames can also consist of parts which either completely surround the circumference of the cooktop or are glued along the circumference of the plate, leaving gaps between them.

There are several design options for the formation of the cover collars 22, 23 of the view frame 20, as the comparison of FIGS. 1-4 already shows, which are to be briefly explained with reference to the following figures. These alternatives can also apply to the individual Versions of the modular system or the connection of the viewing frame to the plate can be used optionally. In this sequence of figures, too, the same parts are provided with the same reference numbers, for the sake of simplicity and clarity predominantly only the different positions being numbered.

8A-8D show (enlarged) sections of a hob for a built-in cooker according to FIG. 1, in which the view frame following the upper end of the central web 21 has a cover collar 22, which is angled both towards the ceramic plate 30, and one of it has angled collar 23. The cover collars 22 and 23 run out in a ramp shape towards the plate surface or towards the hob surround.

In the simplest case of FIG. 8A, the ramp-shaped end of the cover collar 22 simply lies on the plate surface, without a sealing tape or additional adhesive. On the one hand, this enables simple and quick assembly and disassembly, but on the other hand leaves nothing to be desired in terms of watertightness and hygiene. Inadmissible tensions could also occur in the cooking surface during assembly (tolerances, frame and cooking surface).

The embodiment according to FIG. 8B provides a sealing tape 51 in the transition from the cover collar to the hob plate. Although this version is hygienic and also watertight, it requires additional assembly work with regard to the cutting of the sealing adhesive tape. The above-mentioned impermissible tensions in the cooking surface can also occur during assembly.

8C provides a circumferential adhesive seal 53, which only partially fills the space below the cover collar at the level of the plate edge. This design is waterproof and low-tension, leaves nothing to be desired in terms of hygiene, because foreign substances can penetrate into the space under the ramp of the cover collar 22 and can no longer be removed.

Finally, in the embodiment according to FIG. 8D, a circumferential adhesive seal 52 is provided, which fills the space below the cover collar 22 and between the central web 21 and the side edge of the plate. Such a design is waterproof, hygienic and low-tension, but requires more effort in assembly / disassembly.

FIG. 9 shows an embodiment for the design of the cover collar 22 of the viewing frame for standing cookers, with different sub-variants in the transition area to the hob plate 30. Here, too, only the essential elements are shown or provided with reference numbers.

In the embodiment according to FIG. 9, the central web 21 of the viewing frame projects somewhat beyond the top edge of the plate; the adjoining cover collar 22 is angled at the end like a ramp to the surface of the plate 30. This embodiment is already shown in Fig. 2 in a larger context.

FIG. 9 also shows the different variants AD corresponding to FIG. 8, with the direct contact according to FIG. 9A, the sealing tape 51 (9B) between them, the edge seal 53 according to variant 9C and the seal 52 fully encompassing the plate edge according to variant D.

In FIGS. 8 and 9, edge areas of a hob are shown in an idealized sectional view, in each of which the cover collar 22 overlaps the glass ceramic plate.

Similar sectional representations are shown in FIGS. 10-12, in which such an overlapping is not provided, however. In these figures, too, the same elements are provided with the same reference numbers. 10 and 11 show the embodiment for a built-in hob (see also FIG. 3), while FIG. 12 shows one for a standing cooker (see also FIG. 4).

A common feature is that a visible, subsequently applied adhesive seam is applied flush between the end face of the ceramic plate 30 and the central web 21 of the view frame 20 by means of a permanently elastic, heat-resistant adhesive (e.g. silicone adhesive).

Such an embodiment is particularly watertight, low-tension and hygienic.

In the embodiment according to FIG. 10, the cover collar 23 is bent at the end, whereas, in the case of the embodiment according to FIG. 11, it runs continuously flat and horizontally in the case of predetermined installation conditions.

In the case of the built-in cooker according to FIG. 12, the cover collar 22 of the viewing frame 20 bends downward again before reaching the plate edge, in such a way that the section between the central web 21 and the collar 22 is essentially flush with the plate surface.

Claims (14)

Hob plate or the like made of glass, glass ceramic or a similar material, with a support leg of a holding frame arrangement (10) glued to the lower edge of the plate, which for fastening the plate in a hob or the like, which has a viewing frame which is separate from the holding frame arrangement (10). 20) for edge protection and lateral closure of the plate (30), serves, characterized in that the support leg of the holding frame arrangement (10) is part of a profile frame (10a; 10b; 10c) of low overall height, which is for releasably receiving the supporting part of the holding frame arrangement (Carrier part 11) is formed. Plate according to claim 1, characterized in that the receiving end of the carrier part (11) and the profile frame (10a; 10b; 10c) are designed such that they can be mechanically connected to one another by means of a plug connection. Plate according to claim 2, characterized in that the profile frame (10a) is designed with a cross-section in the form of a lying U , one leg of which forms the support leg, a flange of the support part (11) being insertable into the U-profile (Fig. 5). Panel according to claim 3, characterized in that the U-profile (10a) is glued open towards the front face of the panel. Panel according to claim 4, characterized in that at least the upper leg of the U-profile (10a) is flush with the end face of the panel (30). Panel according to claim 3, characterized in that the U-profile (10a) is glued open towards the center of the panel and the outside of its base is flush with the end face of the panel. Plate according to one of claims 3-6, characterized in that the free leg of the U-profile (10b; 10c) is at least partially folded, opening the U-profile (Fig. 6, 7). Panel according to one of Claims 1-7, characterized in that the profile frame (10a; 10b; 10c) is designed as a one-piece frame which completely encompasses the circumference of the panel. Panel according to one of Claims 1-7, characterized in that the profile frame (10a; 10b; 10c) is designed as a multi-part frame which completely encompasses the circumference of the panel. Panel according to one of claims 1-7, characterized in that the profile frame (10a; 10b; 10c) consists of sections which are distributed along the circumference of the panel (30) while leaving gaps. Plate according to one of claims 1-10 for a hob of a free-standing cooker, characterized in that the viewing frame (20) follows the upper end of a central web (21) has a cover collar (22) angled towards the plate (30). Plate according to one of claims 1-10 for a built-in hob, characterized in that the viewing frame (20), following the upper end of a central web (21), has a cover collar (23) angled away from the plate (30). Plate according to one of claims 1-10 for a built-in hob, characterized in that the viewing frame (20) following the upper end of a central web (21) has a cover collar (22, 10) which is angled both towards the plate (30) and away from it. 23). Plate according to claim 11 or 13, characterized in that the central web (21) of the viewing frame (20) projects slightly above the top edge of the plate and the cover collar (22) angled towards the plate (30) is angled at the end in a ramp shape towards the plate surface.

Images