Glass-ceramic articles

Abstract

It relates in particular to an article for household and / or furniture use, in particular a countertop or furniture unit, comprising a framework (2) on which a glass-ceramic assembly is placed, said glass-ceramic assembly comprising a glass-ceramic plate (4) and an electronic module (7) comprising at least one heating element (8), said framework comprising a support surface on which the glass-ceramic plate is placed and fixed, and a housing in which the heating element is placed, said glass-ceramic plate having fixing means (100) for reversibly fixing it to the framework.

Description

[Technical field]

[0001] The present invention relates to the field of articles formed from glass-ceramic plates. [Background technology]

[0002] There are articles formed from glass-ceramic plates, which are intended in particular to serve as countertops or (particularly horizontal) surfaces of furniture units, which plates have particularly large dimensions (the articles are, for example, part of the furniture thus formed), and which also comprise elements useful for their operation or for the operation of the plate, such as, for example, heating elements, electronic components, etc.

[0003] Glass-ceramics, in particular, have been used for many years to form glass-ceramic hotplates, which have been very successful with home appliance retailers, home appliance manufacturers, and users due to their attractive appearance and ease of cleaning.

[0004] For their part, countertops are generally made from other materials such as wood, quartz, Corian®, etc. However, the use of glass-ceramic plates to manufacture these countertops has proven particularly attractive, although this material poses unique challenges.

[0005] Glass-ceramics start out as glasses, called precursor glasses (or mother or green glasses), whose specific chemical composition allows them to undergo controlled crystallization by a suitable heat treatment, called ceramization. This specific partially crystallized structure gives glass-ceramics their unique properties.

[0006] Each glass-ceramic product is the result of specific research and numerous tests, and it is very difficult to make changes in the method for obtaining the glass-ceramic without risking unfavourable effects on the glass-ceramic and / or the desired properties; for example, when conventionally used as hotplates, glass-ceramic plates with a black appearance must generally exhibit a transmission in the visible range that is low enough to hide the underlying heating element when it is turned off, and high enough to be able to visually detect said element when it is in operation for safety reasons and / or to read any display. Glass-ceramic plates must also have sufficient mechanical strength as required for their use, especially in the field of domestic appliances, especially when they have a large size, and have good resistance to pressure, impacts (to support and withstand the fall of an appliance, etc.) etc. (specified according to the EN 60335-2-6 standard, for example, when they are conventionally used as hotplates).

[0007] To fulfil the function assigned to it, the glass-ceramic plate is generally equipped with accessories or additional (decorative or functional) elements necessary for its final use (for example a control panel for a heating element or a hotplate), in particular electronic components, said elements or accessories being generally permanently fixed to the plate by being set in a housing provided in the plate for that purpose and / or by being adhesively bonded in an area separate from the area of ​​any heating area possibly present. Thus, the position and selection of the accessories are preset and once the plate and its accessories are assembled, in case of a defect in an element, the assembly has to be dismantled using a specific tool or the repair involves replacing the entire plate or assembly.

[0008] Dismantling operations are all the more complicated since glass-ceramic plates are heavy and particularly large plates, generally fixed to their supports and, if necessary for safety and hermeticity, equipped with seals between them. As a result, the use of glass-ceramics combined with electronic components for the manufacture of countertops or surfaces of furniture units that are interactive and / or multifunctional creates problems with regard to the installation or removal of components. In particular, installations are manufactured with a changeable nature, where any intervention is particularly complicated and, in some cases, involves replacing the assembly in case of defective elements. Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention therefore seeks to address these shortcomings by providing an article in which maintenance is simpler and easier to perform. [Means for solving the problem]

[0010] To this end, the invention relates in particular to an article for household and / or furniture, in particular a countertop or furniture unit, comprising a framework in which a glass-ceramic assembly is arranged, said glass-ceramic assembly comprising a glass-ceramic plate and an electronic module comprising at least one heating element, said framework comprising a support surface on which the glass-ceramic plate is arranged and fixed, and a housing in which the heating element is arranged, said glass-ceramic plate being characterised in that it has fastening means for reversibly fixing it to the framework.

[0011] This article advantageously allows for easy maintenance, since in the event of a fault, it is only necessary to act on the reversible fastening means to detach the plate from the framework and make the electronic module accessible. Once the fault has been repaired, the plate can easily be refastened to the framework.

[0012] According to one example, the fixing means comprises at least two assemblies formed of a threaded rod fixed to the glass-ceramic plate and a nut that can be screwed onto the threaded rod, said framework comprising at least one opening through which the threaded rod is inserted.

[0013] According to one example, at least two assemblies are arranged on the axis of symmetry of the larger of the two dimensions of the glass-ceramic plate.

[0014] According to one example, at least two assemblies are arranged on the axis of symmetry of the larger of the two dimensions of the glass-ceramic plate.

[0015] According to one example, the fastening means comprises at least four assemblies formed of threaded rods and nuts arranged symmetrically in pairs relative to the two-dimensional axis of symmetry of the glass-ceramic plate.

[0016] According to one example, the fastening means comprises at least one pair of magnets, including a magnet fixed to the glass-ceramic plate and a magnet fixed to the framework, the magnets being arranged so as to be adjacent to each other when the glass-ceramic plate 4 is fastened to the framework.

[0017] According to one example, the fixing means comprise at least two pairs of magnets arranged symmetrically with respect to an axis of symmetry in one of the two dimensions of the glass-ceramic plate.

[0018] According to one example, the magnet is in the form of a linear strip.

[0019] According to one example, the magnets are in the shape of a right angle structure.

[0020] According to one example, the framework comprises grooves, in each groove one of the magnets of a pair is disposed.

[0021] According to one example, the groove is sized to have a depth such that two magnets of a pair can fit therein.

[0022] According to one example, the depth of the groove is: Glass-Ceramic Plate The depth is such that when the magnets are fixed to the framework, the two magnets of one pair of each of the framework glass-ceramic plates are in contact.

[0023] According to one example, the heating element is disposed within and fixed to the framework housing and is separate from the glass-ceramic plate.

[0024] The invention also relates to a method for fixing a glass-ceramic plate to a framework, characterized in that it comprises the following steps: Providing a glass-ceramic plate and framework; defining a location for at least one threaded rod on a support surface of the framework and drilling a through hole at said location; placing the glass-ceramic plate on the support surface; coating the threaded rod with an adhesive and inserting it into an opening in a glass-ceramic plate to secure it to the glass-ceramic plate; and Engaging nuts with threaded rods to maintain the glass-ceramic plate on the framework.

[0025] According to one example, the method also includes a step between placing the glass-ceramic plate on the support surface and coating the threaded rod with adhesive, whereby a block is fixed to the glass-ceramic plate by adhesive bonding and the threaded rod is adhesively bonded to the block. [Brief description of the drawings]

[0026] Further particular features and advantages will become more apparent from the description given below, given entirely as a non-limiting example, with reference to the attached drawings, in which:

[0027] [Figure 1] FIG. 1 is a schematic diagram of an article according to the present invention. [Diagram 2] FIG. 2 is a schematic diagram of an article according to the present invention. [Diagram 3] FIG. 3 is a schematic diagram of an article according to the present invention. [Figure 4] FIG. 4 is a schematic diagram of a first embodiment of an article according to the present invention. [Diagram 5] FIG. 5 is a schematic diagram of a first embodiment of an article according to the present invention. [Figure 6] Figures 6a and 6b are schematic diagrams of the arrangement of the reversible fastening means of the first embodiment. [Figure 7] FIG. 7 is a schematic diagram of a second embodiment of the article according to the invention and related variants. [Figure 8] 8a to 8e are schematic diagrams showing the arrangement of reversible fastening means of a first embodiment of an article according to the present invention. [Figure 9] FIG. 9 is a schematic diagram of a second embodiment of the article according to the invention and related variants. [Figure 10] FIG. 10 is a schematic diagram of the arrangement of the reversible fixing means of the first embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] 1-3, the article according to the invention is a furniture unit 1, e.g. a kitchen island, intended for various (sequential or simultaneous) uses including food preparation and consumption, supporting objects, cooking food, etc. The furniture unit is formed from a framework 2 on which a glass-ceramic assembly is placed. The framework or furniture unit comprises a support surface 20 on which the glass-ceramic assembly is placed (seen in FIG. 9a). The Glass-ceramic The assembly is made of glass-ceramic Glass-Ceramic Plate 4 to form a fully (i.e. over its entire area) formed countertop 3. The substrate has a smooth upper surface and a spiked underside and is 6 mm thick. The substrate or glass-ceramic plate may be black or white or any other possible color.

[0029] this Glass-ceramic The assembly also includes an electronic module 7, which, if necessary, Glass-Ceramic Plate , which in particular in this case are heating elements 8 for cooking food, e.g. inductors arranged under the plate 4. The position of the heating elements 8 may, if necessary, be indicated on the surface of the plate by a decoration 9, e.g. made of enamel, which defines heating zones according to requirements (three heating zones are shown in FIG. 1).

[0030] Optionally, the electronic device 7 may comprise control means or inductive charging means.

[0031] In a first embodiment, the electronic module 7 is placed in the framework 2, i.e. in the furniture unit which supports said glass-ceramic plate 4. For this purpose, the framework 2 is Glass-Ceramic Plate The frame 2 comprises a housing 2a in which elements 8 for the operation of the electronic module 7 are arranged. An electronic module 7 is fixed to the frame 2 by means of adhesive or by screwing or clipping.

[0032] This configuration has the advantage of not adding mass to the glass-ceramic plate 4, making it easier to handle while limiting tensions on its underside. This advantage is even more important since there are large glass-ceramic plates with dimensions of 240 cm x 110 cm or 360 cm x 130 cm, which therefore have a significant mass. 2 The following glass ceramic substrates are considered standard size substrates and have an area of ​​0.7m 2 The above glass ceramic substrates are considered to be large size substrates.

[0033] In a second embodiment, the electronic module 7 is fixed to the glass-ceramic plate 4 by means of adhesive or by means of screws or clips. The framework 2 thus comprises a housing 2b into which the electronic module 7 is inserted. Glass-Ceramic PlateThe electronic module 7 is realized so that an element 8 for the operation of the electronic module 7 fits inside it. Between the electronic module 7 and the plate 4, a relatively large or small gap is provided.

[0034] Advantageously, according to the invention, the glass-ceramic plate 4 is fixed to the framework via fixing means 100, the fixing being reversible, Glass-Ceramic Plate 4 has fastening means for reversibly fastening it to the framework 2. This is understood to mean that the reversible fastening means 100 is such that it can be operated, firstly, to fasten the glass-ceramic plate 4 to the framework 2 and, secondly, to separate the glass-ceramic plate 4 from the framework 2. This separation by operating the reversible fastening means 100 is performed without destroying said reversible fastening means 100. In this way, Glass-Ceramic Plate The reversible fastening means 100 can be operated again to re-fasten 4 to the framework.

[0035] According to a first embodiment, seen in figures 4 and 5, the reversible fastening means 100 comprises an assembly 110 comprising at least one threaded rod 112 of circular cross section, on which a nut 114 is fixed. The threaded rod 112 is itself supported by the glass-ceramic plate 4 so as to extend perpendicular to the plane of the glass-ceramic plate 4. This fastening of the rod 112 to the glass-ceramic plate 4 can be effected by adhesive bonding.

[0036] The adhesive used is a silicone or epoxy type adhesive.

[0037] It will thus be understood that the reversible fastening means 100 is fixed directly to the glass-ceramic plate 4 .

[0038] The framework 2 on which the glass-ceramic plate 4 rests comprises through-openings 21. These through-openings 21 are arranged such that the rods 112 are adhesively bonded to the glass-ceramic plate 4 and the openings of the framework 2 face each other, allowing the rods 112 to be inserted into the through-openings 21. The framework 2 therefore comprises an area in which the through-openings 21 are arranged, for example a rim 2c.

[0039] This insertion then makes it possible to use a nut 114 which, by its rotational action, cooperates with the threaded rod 112 so as to cause a translational movement on said rod. By means of the translational movement of the nut 114, the latter is able to fix the glass-ceramic plate 4 to the framework 2.

[0040] It will be understood that the through opening 21 has in a first example a constant cross section and is dimensioned so that a threaded rod 112 is inserted therein. This rod 112 projects from the framework 2 so that a nut 114 can be fitted thereon.

[0041] In a second example, the opening 21 comprises a first portion having dimensions substantially similar to those of the rod 112 and a second portion enabling the latter to be inserted therein, the dimensions of which enable the nut 114 to be inserted therein. The rod 112 is thus provided with a length which enables it to protrude into the second portion of the opening 21 so that it can cooperate with the nut 114. This second example therefore advantageously makes it possible to hide the rod / nut assembly in the thickness direction of the framework 2.

[0042] The glass-ceramic plate 4 is fixed to the framework via at least two threaded rod / nut assemblies 110, as can be seen in Fig. 6a. In this case, the two assemblies 110 are located on an axis extending in a direction parallel to the longer of the two lengths of the plate. Preferably, these two assemblies 110 are: Glass-Ceramic PlateEven more preferably, the reversible fastening means 100 comprises four threaded rod / nut assemblies 110, each of which has a respective one of the following arrangements: Glass-Ceramic Plate These assemblies 110 are thus located at the corners of Glass-Ceramic Plate The two-dimensional symmetry axes S1 and S2 of the four elements are arranged symmetrically in pairs.

[0043] In this variation of the first embodiment, the threaded rod 112 is only partially threaded: the thread extends along the rod so that when the nut 114 reaches its leading end, the glass-ceramic plate 4 is fixed and there is no play in the fixation.

[0044] In another variation of this first embodiment, which can be seen in FIG. 10, the threaded rod 112 is itself Glass-Ceramic Plate The threaded rod 112 is attached to a block 113 that is adhesively bonded to the substrate. This block 113, which is part of the fixing means, has a contact area with the substrate that is larger than the contact area of ​​the rod 112. This larger contact area allows for better resistance to stresses that can be applied to the threaded rod 112.

[0045] This block 113 is the element to which the threaded rod is attached or which is made integral with said rod.

[0046] In an alternative to this variant, not shown, the block 113 is designed so that two threaded rods 112 can extend from said block 113 .

[0047] This first embodiment and its variants are advantageously Glass-Ceramic Plate This improved mounting method consists in fastening the threaded rod 112 to the glass-ceramic plate 4 after the latter has been placed on the furniture unit 2. The method therefore consists in providing a step of fastening the rod after a step in which said glass-ceramic plate 4 is placed and adjusted on the furniture unit 2.

[0048] This step of fixing the threaded rods 112 consists firstly of defining the position of each threaded rod on the support surface 20 of the framework 2. Secondly, the through holes 21 are drilled at the defined positions. Thirdly, the glass-ceramic plate 4 is placed on the furniture unit and then the rods are fixed to the glass-ceramic plate 4 through the through holes 21. This fixation is ensured by means of an adhesive that is applied to each rod 112 before said rod is inserted into the through opening.

[0049] In the case of the threaded rods alone, these are fixed directly to the glass-ceramic plate 4 . When a block 113 is used, if the latter is made together with a threaded rod, the rod / block assembly is fixed to the glass-ceramic plate. If the block and rod are separate, the block 113 is fixed to the glass-ceramic plate 4 by adhesive, and then the threaded rod 112 is fixed to said block 113. Fourthly, a nut 114 is joined to the threaded rod.

[0050] The through holes 21 will be dimensioned so that the rods 112 can be inserted into them without friction. The minimum diameter of the through holes can therefore be provided to be the same with a tolerance as the diameter of the threaded rod 112. However, it is possible to have through holes 21 with a much larger diameter than the threaded rod. In this case, a grommet or a peg can be inserted into said holes 21 to receive said threaded rod.

[0051] This method advantageously allows to have a perfect alignment between the threaded rods 112 and the holes 21 so as to avoid problems during mounting and to avoid stresses on said rods 112 in case of offsets. Moreover, this makes it easier to transport the glass-ceramic plate 4 compared to a glass-ceramic plate 4 with rods 112 fixed before being placed on the framework 2. Advantageously, the threaded rods 112 protrude once attached to the glass-ceramic plate 4. The glass-ceramic plate 4 must therefore be manipulated to avoid impacts on the rods 112, with the risk of tearing them off or deforming them. By fixing the screws 112 once the glass-ceramic plate 4 has been placed on the framework 2, these inconveniences are avoided. Moreover, this method advantageously allows to place the threaded rods 112 depending on the configuration of the furniture unit, i.e. in the most accessible positions and in positions other than where the electronic module 7 is placed.

[0052] According to a second embodiment, seen in figure 7, the reversible fastening means 100 comprises at least one pair of magnets 121. This pair of magnets comprises: Glass-Ceramic Plate 4, in particular on the surface that contacts the framework 2, and a magnet 121 disposed on the framework 2, in particular on the Glass-Ceramic Plate 4 and one magnet 121 arranged on a surface that contacts the magnet 121. The pair of magnets 121 are arranged so that the magnets 121 attract each other. This is Glass-Ceramic Plate This means that the magnet 121 arranged on the frame 4 is attracted to the magnet 121 arranged on the frame 2. Glass-Ceramic Plate There is a pulling force between 4.

[0053] Each magnet 121 is fixed to the framework 2 or the glass-ceramic plate 4 by adhesive. The magnets 121 fixed to the framework can be fixed by screws. For this purpose, holes are provided through which the screws can be inserted.

[0054] According to a first visible example, the reversible fixing means 100 comprises a pair of magnets 121, each having a strip shape designed to delimit a rectangular perimeter, as can be seen in FIG. 8 a, in which the magnets 121 of the glass-ceramic plate 4 are depicted.

[0055] Glass-Ceramic Plate While attaching 4 to the framework 2, Glass-Ceramic Plate is arranged so that the magnet 121 it supports is in contact with the magnet 121 supported by the framework 2, Glass-Ceramic Plate Ensure that 4 is secured in place.

[0056] According to a second embodiment, the reversible fastening means 100 comprises two pairs of magnets 121. These magnets 121 can have different shapes, such as straight strips or strips designed to delimit a U, as can be seen in figures 8b and 8c, where the magnets 121 of the glass-ceramic plate 4 are depicted. These magnets 121 are Glass-Ceramic Plate 4 Two magnets 121 Glass-Ceramic Plate 4. The substrate 10 is symmetrical or arranged to be symmetrical about a transverse direction S2 of the larger of the two dimensions of the substrate 10, or about an axis S1 parallel to the larger of the dimensions.

[0057] According to a third embodiment, seen in figures 8d and 8e, the reversible fastening means 100 comprises four pairs of magnets 121. These magnets 121 can have different shapes, such as straight strip shape or right-angled strip shape, i.e. two parts forming a right angle.

[0058] These magnets 121 are arranged in pairs symmetrically facing each other. In the case of magnets 121 in the form of a rectangular structure, they are advantageously Glass-Ceramic Plate 4 and are placed at the corners of the frame.

[0059] According to one variant of the invention, seen in figures 9a and 9b, the framework 2 is designed with grooves 120 or slots in which the magnets 121 fixed to the framework 2 are placed. Preferably, these grooves or slots 120 are dimensioned to accommodate one pair of magnets 121. This is because the grooves or slots 120 are designed to accommodate the magnets 121 on the framework. Glass-Ceramic Plate It should be understood to mean that during positioning of 4, each groove or slot 120 has a depth such that it can accommodate two magnets of a pair. This depth is Glass-Ceramic Plate When 4 is attached to the frame 2, one pair of magnets comes into contact, Glass-Ceramic Plate 4 may be of such a depth that it comes into contact with the framework 2.

[0060] This variant is advantageously characterized in that the magnet 121 Glass-Ceramic Plate These slots 120 allow for improved fixation since they allow for lateral retention, whereas the slots 120 allow for fixation with respect to traction perpendicular to the plane of the ligament. Glass-Ceramic Plate The magnets 121 are also inserted into the grooves 120 or slots, so that the sides of these grooves or slots 120 act as stops. Glass-Ceramic Plate When a lateral force is applied to 4, Glass-Ceramic Plate The magnet 121 adhesively bonded to the Glass-Ceramic Plate The magnets abut the sides of the grooves or slots 20 to prevent offset of the grooves or slots 20. Preferably, the dimensions of the grooves or slots 120 are such that the magnets can be inserted therein, but cannot move laterally therein.

[0061] Of course, the invention is not limited to the illustrated examples and can be varied and modified in various ways that will be obvious to those skilled in the art. Thus, in a third embodiment, the reversible fastening means combines one pair of magnets and a rod / nut assembly. For example, there may be four pairs of magnets and one rod / nut assembly for fastening the glass-ceramic plate 4 to the framework 2. The present disclosure further includes the following aspects: Aspect 1 1. An article, in particular a household and / or furniture article, in particular a countertop or furniture unit, comprising a framework (2) on which the glass ceramic assembly is placed; The glass-ceramic assembly includes a glass-ceramic plate (4) and an electronic module (7) including at least one heating element (8); the framework comprises a support surface on which the glass-ceramic plate is arranged and fixed, and a housing (2a, 2b) in which the heating element is arranged, said glass-ceramic plate (4) directly comprises fastening means (100) for reversibly fastening it to said framework; Goods. Aspect 2 The article of claim 1, wherein the fixing means (100) includes at least two assemblies (110) formed from a threaded rod (112) fixed to the glass-ceramic plate (4) and a nut (114) that can be screwed onto the threaded rod, and the framework includes at least one opening through which the threaded rod is inserted. Aspect 3 3. The article of claim 2, wherein the threaded rod (112) is attached to a block (113) that is adhesively bonded to the glass-ceramic plate (4). Aspect 4 The article of any one of claims 2 to 3, wherein the at least two assemblies (110) are disposed on an axis of symmetry of the larger of two dimensions of the glass-ceramic plate. Aspect 5 The article of any one of claims 2 to 3, wherein the at least two assemblies (110) are disposed on an axis of symmetry of the smaller of two dimensions of the glass-ceramic plate. Aspect 6 3. The article of claim 2, wherein the fastening means comprises at least four assemblies (110) formed of threaded rods and nuts arranged symmetrically in pairs with respect to a two-dimensional axis of symmetry of the glass-ceramic plate. Aspect 7 The article of claim 1, wherein the fastening means (120) comprises at least one pair of magnets (121), comprising a magnet (121) fixed to the glass-ceramic plate and a magnet (121) fixed to the framework, the magnets being arranged adjacent to each other when the glass-ceramic plate 4 is fastened to the framework. Aspect 8 8. The article of claim 7, wherein the fastening means comprises at least two pairs of magnets (121) symmetrically arranged with respect to an axis of symmetry in one of the two dimensions of the glass-ceramic plate. Aspect 9: The article of embodiment 8, wherein the magnet (121) is in the shape of a straight strip. Aspect 10 The article of embodiment 8, wherein the magnet (121) is in the shape of a right-angled structure. Aspect 11 The article of any one of aspects 7 to 10, wherein the framework includes grooves (120), with one magnet of a pair disposed in each of the grooves. Aspect 12 12. The article of embodiment 11, wherein the groove is dimensioned to have a depth such that two magnets of a pair can fit therein. Aspect 13 13. The article of claim 12, wherein the depth of the groove is such that when the plate is secured to the framework, two magnets of one pair of the framework and the glass-ceramic plate are in contact with each other. Aspect 14

[0031] Aspect 14. The article of any one of aspects 1-13, wherein the heating element is disposed and secured within the skeleton housing and is separate from the glass-ceramic plate. Aspect 15 A method for fastening a glass-ceramic plate (4) to a framework (2) for an article according to any one of the first to fourth aspects, comprising the steps of: providing said glass-ceramic plate and said framework; determining the location of at least one threaded rod on a support surface (20) of said framework (2) and drilling a through hole at said location; placing the glass-ceramic plate on the support surface; coating the threaded rod with an adhesive and inserting the threaded rod into an opening in the glass-ceramic plate to secure the threaded rod to the glass-ceramic plate; and engaging nuts with the threaded rods to reversibly secure the glass-ceramic plate to the framework; A method comprising: Aspect 16 16. The method of claim 15, further comprising the steps of: between placing the glass-ceramic plate on the support surface and coating the threaded rod with adhesive, a block (113) is secured to the glass-ceramic plate by adhesive bonding and the threaded rod is adhesively bonded to the block.

Claims

1. An article, a framework (2) on which the glass ceramic assembly is placed, The glass-ceramic assembly includes a glass-ceramic plate (4) and an electronic module (7) including at least one heating element (8); said framework comprising a support surface on which said glass-ceramic plate (4) is placed and fixed, and a housing (2a, 2b) in which said heating element is placed, said glass-ceramic plate (4) directly has fastening means (100) for reversibly fastening it to said framework; Goods.

2. 2. The article according to claim 1, wherein said fastening means (100) comprises at least two assemblies (110) formed from a threaded rod (112) fixed to said glass-ceramic plate (4) and a nut (114) that can be screwed onto said threaded rod, said framework comprising at least one opening through which said threaded rod is inserted.

3. The article of claim 2, wherein the threaded rod (112) is attached to a block (113) adhesively bonded to the glass-ceramic plate (4).

4. The article according to claim 2 or 3, wherein said at least two assemblies (110) are arranged on the axis of symmetry of the larger of the two dimensions of said glass-ceramic plate (4).

5. The article according to claim 2 or 3, wherein said at least two assemblies (110) are arranged on an axis of symmetry of the smaller of the two dimensions of said glass-ceramic plate (4).

6. 3. The article according to claim 2, wherein said fastening means comprises at least four assemblies (110) formed of threaded rods and nuts arranged in pairs and symmetrically with respect to a two-dimensional axis of symmetry of said glass-ceramic plate (4).

7. 2. The article of claim 1, wherein the fastening means (120) comprises at least one pair of magnets (121), comprising a magnet (121) fastened to the glass-ceramic plate (4) and a magnet (121) fastened to the framework, the magnets being arranged so as to be adjacent to each other when the glass-ceramic plate (4) is fastened to the framework.

8. 8. The article according to claim 7, wherein said fastening means comprises at least two pairs of magnets (121) arranged symmetrically with respect to an axis of symmetry in one of the two dimensions of said glass-ceramic plate (4).

9. The article of claim 8, wherein the magnet (121) is in the shape of a straight strip.

10. The article of claim 8, wherein the magnet (121) is in the shape of a right-angled structure.

11. The article of any one of claims 7 to 10, wherein the framework includes grooves (120), in each of which a magnet of one pair is disposed.

12. 12. The article of claim 11, wherein the groove is sized to have a depth such that two magnets of a pair can fit therein.

13. 13. The article according to claim 12, wherein the depth of the groove is such that when the glass-ceramic plate (4) is fixed to the framework, two magnets of one pair of the framework and the glass-ceramic plate (4) are in contact with each other.

14. The article according to any one of claims 1 to 13, wherein the heating element is disposed and fixed within the skeleton housing and is independent of the glass-ceramic plate (4).

15. A method for fixing a glass-ceramic plate (4) to a framework (2) for an article according to any one of claims 1 to 14, comprising the following steps: Providing said glass-ceramic plate (4) and said framework; defining the location of at least one threaded rod on a support surface (20) of said framework (2) and drilling a through hole at said location; placing said glass-ceramic plate (4) on said support surface; coating the threaded rod with adhesive and inserting it into an opening in the glass-ceramic plate (4) to secure the threaded rod to the glass-ceramic plate (4); and engaging nuts on said threaded rods to reversibly secure said glass-ceramic plate (4) to said framework; A method comprising:

16. 16. The method for fastening a glass-ceramic plate (4) according to claim 15, further comprising the steps of: between the step of placing the glass-ceramic plate (4) on the support surface and the step of coating the threaded rod with adhesive, a block (113) is fastened to the glass-ceramic plate (4) by adhesive bonding and the threaded rod is adhesively bonded to the block.

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