DE102008012332B4 - Composite of a worktop with a facing plate - Google Patents

Abstract

Composite of a horizontal worktop (2) with a vertical wall-facing facing plate (3), wherein the facing plate (3) with a longitudinal edge (4) on the wall-side edge (5) of the worktop (2) is arranged, characterized in that at least the worktop (2) has a layer-free material plate (7) towards the visible upper side (6), wherein the wall-side edge (5) of the working plate (2) has a groove (8) which has a groove bottom (9) in the groove cross-section, a groove side leading edge (9) 10) and a wall-side Nuthinterflanke (11), in which to a spring (12) with Federvorder- (13) and spring trailing edge (14) profiled longitudinal edge (4) of the facing plate (3) is arranged at least partially, wherein the cross section the groove (8) or the spring (12) is asymmetrical with respect to the front (10, 13) and trailing flanks (11, 14) and the groove (8) or spring (12) has at least one steep flank (16) and one inclined one Flank (17) have.

Description

The The invention relates to a composite of a horizontal worktop with a vertical wall facing panel. The facing plate is with a longitudinal edge arranged on the wall-side edge of the worktop. The worktop has a layer-free material plate towards the visible upper side.

In this relationship is under worktop a nearly horizontal oriented plate, as understood for sale counters, gastronomic counters, Exhibition counters; kitchen or bathroom furniture are common. As a veneer panels are called, for veneering a wall area, used as a screen or protective cover and have a decorative front view. Usually if the worktop is fixed on base cabinets or underframes, while the vertical facing panel with its lower rectilinear longitudinal edge a composite with the wall-side edge of the worktop their own weight forms and at least pointwise at the with the facing plate is fixed to blind edge.

One such blunt bond between longitudinal edge and worktop forms a longitudinal gap, as soon as the marginal edge of the worktop warps or warped. About this Longitudinal gap can be working fluids such as water, fats and other substances as well as microbes and dust particles penetrate and the hygiene adversely polluting source of contamination form. Another disadvantage of a conventional placement of a veneer board on the wall-side edge of the countertop is that the long edge across from can shift the visible top of the worktop. This can be avoided by that in the longitudinal edge of the facing plate managerial or dowel pins are inserted, the exact fit in holes engage the wall edge of the worktop. This solution prevents a displacement of the longitudinal edge facing the facing plate the edge of the worktop, however, this solution can not prevent that with corresponding warping the worktop a gap between the longitudinal edge and worktop training, which in turn is contaminated. One more way is in the wall-side edge of the worktop a Tray or fold to incorporate, on which the facing plate support can. This solution has the disadvantage that on the one hand the edge of the layer-free material plate, from which the worktop consists, is weakened, so that the layer-free Material plate must have a minimum thickness to the wall side Edge of the worktop such an elongated paragraph provided. Another disadvantage is that a warping of the Veneer plate to a gap between the wall edge the worktop and the facing plate leads, which in turn has the disadvantage the penetration of water and other liquids as well as microbes and dust particles and thus adversely affects the hygiene of such a composite.

Becomes used as a layer-free material plate a mineral plate, which consists for example of a particle-filled acrylic and due the embedded particles opposite Tensile and shear stresses is sensitive, are those from the state the technology known ways a composite between such a worktop and a To provide facing board, not suitable for training of contamination-prone gaps between Worktop and facing plate to avoid. In the solution with Dowel pins exist over it In addition, the risk of having the mineral plate during assembly on site fragments spall. After all there is the danger of a screw fixation of the composite Base cabinets or Racks that a mineral countertop due to their high notch sensitivity during assembly on site is damaged.

task The invention is a composite between a horizontal Worktop and a vertical wall facing facing plate too create, which overcomes the disadvantages of the prior art and a precise one coincidence between worktop and facing plate on the wall edge of the Worktop allows. It should be through the composite bends, warping or distortions of the worktop and / or the veneer board largely restricted become.

Is solved This object with the subject of independent claim 1. Advantageous developments The invention will become apparent from the dependent claims.

According to the invention is a Composite between a horizontal worktop and a vertical one wall facing plate created. The veneer board is with a longitudinal edge arranged on the wall-side edge of the worktop. The worktop points towards the visible upper side a layer-free material plate on. The wall-side edge of the worktop indicates the bond a groove in the groove cross section a groove bottom, a worktop side Nutvorderflanke and a wall-side Nuthinterflanke has. In the groove is profiled to a spring with Federvorder- and spring trailing edge longitudinal edge the veneer plate at least partially arranged. The cross section the groove or tongue is asymmetrical with respect to the leading and trailing edges. In this case, tongue or groove have steep flanks and at least one inclined Flank up.

This Composite has the advantage that with the asymmetry of the invention is ensured by tongue or groove on the edge of the worktop, that slight bends, warping or utilization in the worktop or facing plate not to a visible gap in the transition lead from the veneer to the worktop, especially since the groove has a limited Tolerance with regard to bending, warping or exploitation in the worktop allows. About that In addition, the groove has the advantage that for the longitudinal edge of the facing plate a guide exists between the groove flanks, in which the formed as a spring longitudinal edge the facing panel at full length can slide in without the need for dowel pins. Nevertheless, it is a secure longitudinal guide the longitudinal edge ensured by the groove. About that In addition, the asymmetrical cross-section of tongue or groove with an inclined flank has the advantage that when assembling the composite the weight of the facing plate in cooperation with the inclined Flank a gap-free end position of the facing plate in the worktop side Groove automatically enabled.

In a preferred embodiment of the invention, the groove cross-section in the transition from the groove bottom to the groove sides on rounding grooves with a rounding radius r _k ≤ 0.5 n with n of the groove base width. These fillets in the transition from the groove flanks to the groove base reduce the risk of stress peaks in the transition from the groove flanks to the groove base, in particular when the longitudinal edge of the facing plate to be inserted into the groove for the bond is taken in. In this case, the facing plate may have the same material as the worktop and preferably consist of a layer-free material plate of mineral material. In this case, the facing plate in its width of the groove base width correspond to n and have a low-cost facing plate with lower plate thickness, the longitudinal edge is passed through the groove during insertion and can be fitted gap-free by an inclined Nuthinterflanke to a steep groove leading edge.

there will when inserting the facing plate in the groove of the worktop to form a composite the facing panel by the inclined Nuthinterflanke towards pressed on the steep groove leading edge, allowing a precise fit the facing plate surface is formed with the Nutvorderflanke and even a thin facing plate itself neither warping nor warping can, as they are from the inclined Nuthinterflanke on the steep groove leading edge is pressed. For this purpose, the inclined Nuthinterflanke a slope ratio over the steep vertical flank of the groove of the countertop between 1:20 to 1: 1, preferably between 1:10 to 1: 3. The steep groove leading edge is, however, vertical to the horizontal worktop in the wall side Worktop edge incorporated.

The Worktop preferably has a reinforced wall-side Rear edge, in which the groove is arranged. This can be done by the worktop have a thermoplastic material and as a reinforced rear edge and / or as a veneering front edge of a bent edge Worktop material has. This has the advantage of being a joint-free bond to the facing panel at the transition from the worktop level is created in the vertical direction in the form of a groove. To the Placing the veneer panel in a composite with the worktop Preferably, the raised edge on the groove, which partially can be incorporated into a bead.

In addition, can on the wall-side edge of the worktop for reinforcement Forming bead, on the one hand, carries the groove and, on the other hand, to the top the worktop out has a groove, wherein the groove flush connects to the top of the countertop or with a paragraph. These Coving ensures Moistures remain on the worktop surface, not the wall side Reach the rear edge of the worktop. The application of the bead This can be done by making a strip of the same layer-free Material plate, but with greater wall thickness than the worktop materially connected to the wall-side edge of the worktop becomes.

These cohesive Compound may preferably be with a two-component adhesive be achieved, as transparent as the base material acrylic is. Before performing the cohesive Connection can be in the worktop on the wall edge a fold be incorporated, which receives the bead with groove. It is too possible the strip of bulge material dull on the wall edge to stick. After all can the bead in the overlap from the fillet to the top of the countertop also one Have paragraph. The introduction of a groove as a transition from the wall-side edge of the worktop with groove to the front view the veneer plate can after the material connection of the strip for the Bead with the worktop on the wall edge of the worktop done or a complete one prepared and profiled bead with groove is on the wall side Edge of the worktop arranged.

While the groove has a steep flank and a sloped flank, the spring may have parallel steep flanks. Conversely, it is also possible that the spring has a sloping flank and a steep flank, while the groove of the worktop has two parallel steep flanks. Furthermore, instead of the above-described groove of the worktop with a steep Nutvorderflanke and egg ner inclined Nuthinterflanke grooves are provided in the bead of the worktop, which have a sloping Nutvorderflanke and a steep Nuthinterflanke. In this case, a visible gap between the top of the facing plate and the inclined bead flank would arise when inserting the facing plate with its profiled longitudinal edge in the groove. The solution to this problem provides for a spring structure for the profiled longitudinal edge of the facing plate in such a way that a shoulder at the transition from the front of the facing plate to the spring is present. This paragraph can then cover the longitudinal gap when fitting the facing plate in the groove of the worktop by resting on a front approach of the bead.

The Slope of the flank can in a preferred embodiment The invention can also be defined by an inclination angle α. The largest inclination angle α can according to the o. a. Orientation conditions 45 °. The bigger the Inclination angle α, the easier it is to mount the facing board directly on site, because they are without big ones Effort in the groove of the worktop by initial skew and subsequent Movement into the vertical end position can be introduced without to overload the groove and the spring. After swinging in the longitudinal edge the facing plate or the spring of the facing plate in the groove be, because of the dead weight of the vertical facing plate in the groove of the worktop, working and facing plate to a frictional Verbund united. The veneer board slides with its profiled longitudinal edge in the asymmetrical groove along the inclined groove flank and presses force fit against the steep groove flank of the worktop.

In a further embodiment the invention, the facing plate at its seated in the groove profiled longitudinal edge have a frontal shoulder, which refers to a frontal approach the worktop is supported in such a way that the composite has a paragraph-free front view. Such smooth front view without heel between the facing plate surface and the bead with its groove is sought, so that no dust collecting horizontal surface created between bead and vertical facing plate. This one has the Advantage that an easy-care composite is created.

Furthermore shows a further embodiment of the composite on a facing plate, which sits at its seated in the groove profiled longitudinal edge has a frontal heel, which has a frontal approach the worktop protrudes and in cross section a drip can form. This embodiment the composite has the advantage that condensation and water spray, such as it occurs in showers, bathrooms or wet rooms where drips arranged on the front side in the drip area and not over capillary forces in the support area between the facing plate and the worktop can penetrate.

While to wall-side edge a bead can take the groove for the composite can the front edge have a veneer. This veneer is beneficial if the countertop through an appropriate substructure be supported in their dimensional stability should. The function of the veneer is on the one hand a privacy screen a substructure for support form the worktop and on the other hand, the dimensional stability of the front edge Secure the worktop.

Around also the dimensional stability To ensure the wall-side edge of the worktop, the composite a worktop that has a supporting substructure, the at least one surrounding frame under the worktop forms and the rear edge of the countertop with the groove for receiving the load of the vertical facing plate warp-free and torsion-free supports. Especially with worktops of low thickness, for example, from under 5 mm, the substructure ensures a dimensional stability, which ensures that the worktop does not warp on the wall edge or arched and thus the seat of the facing plate in the composite of veneer board and worktop endangered.

The Substructure should not only have a high dimensional stability, but should be additional an easier mounting of the worktop on base cabinets or Allow underframe which is a problem especially with worktops made of solid surface material represents, as solid surface panels not simply by wood screws with base cabinets or Underframes are connectable. The mineral material is notch sensitive and can screw in the introduction of wood even in pre-drilled blind holes break out or get damaged become. Furthermore It must be ensured that the supporting substructure is not by absorbing moisture disproportionately expands and a warpage caused the worktop.

In order to stabilize the shape of the composite, the worktop preferably has, as supportive substructure, a laminate composite panel which has a waterproof laminate side and a waterproof postforming-coated front edge made of laminate. The laminated composite panel is disposed as a substructure such that the waterproof laminate side of the composite laminate panel forms the underside of the substructure and the postformed coated front edge of the composite laminate panel forms the leading edge of the structural panel plate is aligned. By arranged on the front edge facing the substructure is not readily visible.

The advantage of such a laminate composite plate is that it remains self-supporting and dimensionally stable, as long as it does not absorb moisture. Due to the high dimensional stability of such a laminate composite plate can be largely dispensed with gluing or fixing with the composite of facing panel and worktop, so that no tension in temperature differences between the materials of the composite and the composite laminate plate occur. While the thermal expansion coefficient of a work surface made of mineral material is about 3 · 10 ^-5 ° C ^-1 to 6 · 10 ^-5 ° C ^-1 , the coefficient of thermal expansion of a laminated particle board composite particle board material with a laminate top is about 1 · 10 ^-5 ° C ^-1 to 2 x 10 ^-5 ° C ^-1 significantly lower.

From On the other hand, it is an advantage if the worktop matches the substructure a thermally stabilized composite panel forms as in the others embodiments the invention. For this purpose, the substructure points to the worktop adapted thermal properties. In this case it can already be advantageous that the substructure only in the form of a Frame the wall-side edge and the front edge of the worktop supports. Preferably, the substructure has a hollow profile for this purpose.

This hollow profile may be made of an aluminum alloy. Further materials for the substructure, which have a nearly matching coefficient of thermal expansion with the work surface made of a mineral, are substructures of a hard PVC (polyvinyl chloride) at about 5 · 10 ^-5 ° C ^-1 , from a filled with wood flour Bakelite with about 5 · 10 ^-5 per ° C or from a foamed plastic mass. Such a substructure has the advantage that it can be glued directly to the underside of the worktop and thus secure the dimensional stability of the composite worktop and facing plate in the region of the wall edge of the worktop, because thermal stresses are reduced.

If the coefficient of thermal expansion is only slightly different from coefficient of thermal expansion of the substructure is different, like For example, in an aluminum alloy, so the substructure with the worktop over a layer of elastomeric material to be materially connected. This elastomeric material ensures that Thermoelectric voltages between worktop and substructure without the Risk of deflection of the worktop be compensated. Such a balanced connection between worktop and Substructure can also over Velcro strip fixings are brought about. Such Velcro strip connection can thus reduce thermal stresses contribute, even if as a countertop a mineral plate and as a support structure one Laminated composite panel with significant difference in thermal Expansion coefficient is provided.

Farther Is it possible, that the substructure has anisotropy with regard to its dimensional stability, with greater dimensional stability orthogonal to the worktop underside is present as in the worktop level. This anisotropy of dimensional stability can also be achieved through design supported the substructure For example, by making the substructure a honeycomb structure which has a high dimensional stability orthogonal to the worktop forms and in the worktop level a high compliance has.

Without the dimensional stability to weaken the worktop, can be incorporated into the countertop pattern of recesses, taking heat resistant in the recesses Spacers are inserted. The recesses are so on the heat-resistant Spacers adapted that the spacers over the Top of the worktop protrude and form a pattern that for example, is adapted to a heated bottom of a container, so that such containers can be placed on the spacers, without the dimensional stability of the composite to endanger the worktop and facing board or the top of the Worktop damage. Here are the heat-resistant Spacer an air cushion with a thickness h between the bottom a heated bottom of a container and the top of the worktop. Instead of bullets on Discrete round recesses can also be a pattern for heat-resistant rods in the Worktop be embedded without the dimensional stability of the worktop to impair. The heat-resistant Bars provide also for that a distance between a hot one Bottom of a container and the top of the worktop remains guaranteed, so no warpage the worktop and thus a gap in the composite of worktop and facing plate occurs.

The The invention will now be described with reference to the accompanying figures.

1 shows a schematic cross section of a portion of a worktop with a groove of a first embodiment for bonding with a facing plate;

2 shows a schematic cross section of a portion of a worktop with a groove of a second embodiment for a composite with a facing plate;

3 shows a schematic cross section of a portion of a facing plate with a profiled longitudinal edge of a first embodiment for bonding with a worktop;

4 shows a schematic cross section of a portion of a facing plate with a profiled longitudinal edge of a second embodiment for a composite with a worktop;

5 shows a schematic cross-section through a composite according to an embodiment of the invention;

6 shows a schematic cross-section through a composite according to another embodiment of the invention;

7 shows a schematic cross-section through a composite according to another embodiment of the invention;

8th shows a schematic cross-section through a composite according to another embodiment of the invention;

9 shows a schematic cross section of a portion of a worktop with a groove of a third embodiment for a composite with a facing plate;

10 shows a schematic cross section of a portion of a facing plate with a profiled longitudinal edge of a third embodiment for bonding with a worktop;

11 shows a schematic cross section of a portion of a facing plate with a profiled longitudinal edge of a fourth embodiment for bonding with a worktop;

12 shows a schematic cross-section through a composite according to another embodiment of the invention;

13 shows a schematic cross section through a composite without a substructure of the dimensional stability of the composite;

14 shows a schematic cross section through a composite of a further embodiment of the invention;

15 shows a schematic cross section through a portion of the embodiment according to 14 ;

16 shows a schematic cross section through a portion of the Vordrrandes with an additional sealing element;

17 shows a schematic cross-section through a composite according to another embodiment of the invention;

18 shows a schematic cross-section through a composite according to another embodiment of the invention;

19 shows a schematic cross-section through a composite according to another embodiment of the invention;

20 shows a schematic cross-section through a composite according to another embodiment of the invention;

21 shows a schematic cross-section through a composite according to another embodiment of the invention;

22 shows a schematic cross section through a composite according to another embodiment of the invention.

1 shows a schematic cross section of a portion of a countertop 2 with a groove 8th a first embodiment of a composite 101 and 103 with a veneer board 3 as he is in the 5 and 7 will be shown. For such a composite is the worktop 2 made of a material with a layer-free upper side 6 on the wall edge 5 with a bead 21 provided, in which a groove 8th is incorporated. This groove 8th extends at least on the length of the introduced for the composite horizontal longitudinal edge of a vertical facing panel, not shown here, which cover a wall side of the room and should have a decorative top surface to the worktop out.

The composite should as far as possible a distance and gap-free transition from the facing plate to the horizontal worktop 2 form. For receiving a profiled longitudinal edge of the facing plate in such a precise bond between horizontal worktop 2 and not shown facing plate has the worktop 2 a groove 8th with an asymmetrical groove cross section. This groove cross-section has a groove bottom 9 and a steep flank 16 as groove leading edge 10 and a sloping flank 17 as a trailing edge 11 on, who face each other. This asymmetry of the groove cross-section allows a previously not achieved precision and reliability of a bond between the horizontal worktop 2 and the vertical facing panel, which has a splash-proof, dimensionally stable and contamination-protected composite.

The inclined flank 17 as a trailing edge 11 has an inclination angle α with a Nei Ratio 1:20 to 1: 1, preferably 1:10 to 1: 3, which is less than or equal to 45 °. This inclined flank ensures that when inserting the profiled longitudinal edge of the facing plate, the facing plate precisely against the steep flank 16 the groove leading edge 10 is pressed. It can be set on the inclination angle α, the contact pressure of the profiled longitudinal edge of the facing plate and adjusted to the properties of the material of the facing plate. The smaller the angle of inclination α is, the more this contact pressure decreases. In any case, the profiled longitudinal edge is close to the steep flank 16 the groove 8th at. The inclined flank 17 thus ensures that the profiled longitudinal edge of the facing plate and the facing plate itself can not buckle or distort, since the profiled longitudinal edge of the facing plate is pressed dimensionally stable in the asymmetric cross-section of the groove over the entire length of the longitudinal edge of the steep groove edge.

In order to avoid notch effects in the groove base, the transition from the groove base to the groove flanks is provided with fillets which have a radius of curvature r _k ≦ 0.5 n with the groove base width n. In this embodiment, the groove 8th have the rounding grooves a rounding radius r _k ≈ 0.2 n. Since the layer-free material plate 7 has a thickness d which is insufficient to from the top 6 out of a groove 8th in the order of magnitude shown here is in this embodiment of the invention on the wall edge 5 the worktop 2 a bead 21 applied, which is a material connection with the material of the countertop 2 enters, in which case both for the bead 21 as well as for the worktop 2 the same material is used. For a cohesive bond between the bead 21 and the worksheet 2 to ensure is a fold 48 in the worktop 2 in the wall edge 5 incorporated the bead 21 receives.

For this purpose, a strip with a larger plate thickness of the same material as the worktop be sawn off and profiled and under temperature and pressure with the fold 48 the top 2 cohesive be connected. This bead 21 also allows the transition from the horizontal worktop 2 in the vertical front view 24 with the help of a groove 22 , Such a groove 22 not only improves the visual impression, but also serves as protection of the bond between vertical facing plate and horizontal worktop against splashing water, dust accumulation and contamination in the area of the composite and especially in the area of the asymmetric groove 8th ,

2 shows a schematic cross section of a portion of a countertop 2 with a groove 8th a second embodiment for a composite 102 and 104 with a veneer board 3 as he is in 6 or in 8th will be shown. Components with the same functions as in 1 are identified in the following figures with the same reference numerals and not discussed separately. In this second embodiment of an asymmetric groove 8th indicates the wall-side trailing edge 11 a steep flank 16 and the groove front 10 a sloping flank 17 on. This design of the groove has the consequence that the profiled longitudinal edge of the facing plate is pressed against the Nuthinterflanke upon insertion of the facing plate and a visible gap along the groove 8th would become visible. For this reason, it is provided that the profiled longitudinal edge of the facing plate, as shown in the following figures, has a shoulder that with a neck 23 of the bead 21 the worktop 2 cooperates in such a way that, on the one hand, this gap is covered and on the other hand, the weight of the facing plate partially from the approach 23 of the bead 21 can be included. This is the bead 21 dull on top 6 the worktop 2 glued on and points in transition to the top 6 the worktop 2 a paragraph 49 on.

The advantage of the asymmetrical groove is that the assembly of the facing plate and thus the production of the composite between a horizontal worktop 2 and a vertical veneer plate not shown here is facilitated by the fact that the facing plate can first be placed in a tilted state on the bead and then tilting in the vertical position, due to the inclined Nutvorderflanke 10 fracture-free in the asymmetrical groove 8th can slide. This final assembly of the composite is also supported by the fact that the Nutoberkanten 44 a rounded degree 45 having the radius r _g , the order of the rounding grooves 15 with its rounding radius r _k , where r _{g is} greater than or equal to r _k .

3 shows a schematic cross section of a portion of a facing plate 3 with a profiled longitudinal edge 4 a first embodiment of a composite 101 and 102 with a worktop 2 as he is in the 5 respectively. 6 will be shown.

In the 3 shown facing plate 3 has a front view 24 which can be adapted in their structure and decor to the top of the worktop. In this case, the facing plate 3 be made of the same material as the worktop 2 , On the other hand, it is also possible for the veneer board 3 to use a lighter material to reduce the weight of the facing board 3 to keep low. The facing plate 3 has a profiled longitudinal edge 4 up here as a feather with parallel steep flanks 16 is formed and with a spring width f to the Groove width of the asymmetrical groove, as in 1 and 2 shown is adjusted.

This is shown by the edges 44 a rounded degree 45 with a radius of curvature r _f , wherein this radius of curvature r _f greater than or equal to the radius of curvature r _{k of} the grooves on the groove bottom 9 the asymmetrical groove 8th is how it is in 1 and 2 will be shown. This size ratio r _f / r _k ≥ 1 ensures that the rounded degree 45 the feather 12 no tension on the groove base is triggered as long as this specification is complied with. Rather, the outer surfaces of the spring are supported 12 on the inner surfaces of the groove. Paragraph 18 on the profiled longitudinal edge 4 the dimming plate 3 helps to insert the facing plate into the groove 8th as they are in the 1 and 2 shown is the weight of the facing plate 3 take up or the facing plate 3 on appropriate approaches of in 1 and 2 set bead.

4 shows a schematic cross section of a portion of a facing plate 3 with a profiled longitudinal edge 4 a second embodiment for a composite 103 with a worktop 2 as he is in 7 will be shown. This is the profiled longitudinal edge 4 the facing plate 3 to a spring 12 with steep flanks 16 worked out, the width f of the spring 12 the groove width of the groove according to 1 and 2 equivalent. The difference of this veneer board 3 of the 4 opposite the veneer board 3 according to 3 is that one paragraph each 18 respectively. 19 on both sides of the spring 12 is provided, the paragraph 19 is designed so that he at least with his front view 24 and with the front view 24 of the bead 21 the worktop 2 , as in 1 or 2 shown, a stepless transition of the front views 24 allows or with the front view 24 the facing plate 3 protrudes beyond the front view of the bead of the worktop, as will be described in more detail below.

5 shows a schematic cross section through a composite 101 an embodiment of the invention. For this composite 101 is a facing board 3 with her to a pen 12 trained longitudinal edge 4 as in 3 shown in a groove 8th as well as in 1 is shown, a bead 21 on the wall edge 5 a worktop 2 admitted. Due to the particular features of the asymmetric groove according to the invention 8th of the bead 21 lies the facing plate 3 with their front 24 close to the groove leading edge 10 and is the inclined Nuthinterflanke 11 the asymmetrical groove 8th on this steep flank 16 pressed. The spring width f is adapted to the groove width n, wherein by a wall-side paragraph 18 the profiled longitudinal edge 4 the facing plate 3 Care is taken to ensure that the weight of the facing panel 3 not the material of the bead 21 loaded on tensile stresses, but that the weight of the facing plate 3 on a wall approach 23 of the bead 21 supported. At the same time, the brittleness of the materials which can be used here is taken into account so that such a composite can preferably be used for the bond between mineral plates.

6 shows a schematic cross section through a composite 102 according to a second embodiment of the invention. In this composite, the profiled longitudinal edge of the facing plate 3 no wall-side heel, but a frontal heel 19 on. Besides, the bead is 21 the worktop 2 as in 2 shown formed such that the Nutvorderflanke 10 as inclined leading edge 17 is trained. By the paragraph 19 In this embodiment of the invention, not only is the weight of the facing panel 3 on a frontal approach 23 of the bead 21 but at the same time the facing plate 3 with her backside 46 against the steep flank 16 to the trailing edge 11 pressed. A gap 47 that is between the spring 12 and the groove 8th in this composite 102 an embodiment of the invention is caused by the front-side paragraph 19 the facing plate 3 covered. In addition, the width of the paragraph 19 so on the approach 23 of the bead 21 matched that a paragraph-free relatively smooth front view 24 through the bead 21 and the facing plate 3 is formed.

7 shows a schematic cross section through a composite 103 according to a further embodiment of the invention. In this embodiment of the invention, the width of the bead 21 in the transition to the facing plate 3 on the material thickness of the veneer board 3 adapted and the profiled longitudinal edge 4 the facing plate 3 has a central spring 12 with steep flanks, as is in 4 was shown on. In this case, the facing plate can 3 over a rear wall-side heel 18 on the bead 21 and supported by the asymmetric groove 8th under pressure against the groove leading edge frictionally and positively with the worktop 2 connected.

In this embodiment of the invention, the rear edge 5 the worktop 2 a bent edge 49 on. This edge 49 is made of the thermoplastically deformable worktop material by thermal bending to form a groove 22 educated. For arranging the veneer board 3 to a composite 103 with the worktop 2 preferably has the upturned edge 49 the groove 8th provided that the wall thickness of the countertop material has a sufficient thickness. Preferably, a worktop material thickness is used, which forms only a front approach. A bead 21 is in this case like in 7 shown at the upturned edge 49 on the wall side by means of an adhesive connection 52 firmly bonded. In this bead 21 then can the groove 8th be incorporated or partially like 7 to be provided in the countertop material. This has the advantage that a joint-free composite is created for facing plate at the transition from the worktop plane in the vertical direction in the form of a groove.

8th shows a schematic cross section through a composite 104 according to a further embodiment of the invention. In this embodiment of the invention, the asymmetrical groove 8th in the bead 21 designed as they are in 2 will be shown. In this groove 8th grips a spring 12 one leading to a veneer board 3 belongs. A frontal heel 19 is designed so that it has a facing plate 3 bearing approach 23 of the bead 21 protrudes and a drip nose 25 forms. This will be the gap 47 from ingress of splashing water or condensation, located on the front 24 the facing plate 3 forms, protected. The effect and operation of the drip nose 25 can be reinforced by the fact that a corresponding cross-sectional profile for the drip nose is milled to the facing plate in the region of the profiled longitudinal edge. In addition, it is possible that the front paragraph 19 an inclination angle β, as in 8th shown, towards the drip nose 25 having.

9 shows a schematic cross section of a portion of a countertop 2 with a groove 8th a third embodiment for a composite with a profiled longitudinal edge 4 a veneer board 3 like it 10 and 11 demonstrate. The groove 8th in this embodiment shows no inclined groove flank, but the groove leading edge 10 and the trailing edge 11 aligned almost parallel and form steep groove edges 16 , The worktop 6 is provided in this embodiment of the invention with a greater wall thickness, which ensures that the worktop 2 is self-supporting in the region of the bead and remains dimensionally stable. This groove 8th can form a composite according to the invention with correspondingly profiled longitudinal edges of the following facing panels.

10 shows a schematic cross section of a portion of a facing plate 3 with a profiled longitudinal edge 4 a third embodiment for a composite with a worktop 2 , In the 10 shown facing plate 3 differs in the area of the profiled longitudinal edge 4 from the facing plate 3 according to 3 in that the spring 12 in the area of the profiled longitudinal edge 4 a spring front edge 13 which is practically an extension of the front view 24 the facing plate 3 represents, and a spring trailing edge 14 that forms an inclined flank with an inclination angle α. Such a spring with an asymmetric cross-section forms a precise and frontally gap-free composite with a groove 9 with symmetrical cross-section according to 9 , This serves the inclined trailing edge 14 the feather 12 to the front view 24 to press closely against a corresponding front side of the groove. The magnitudes of the inclination angle α are in the values already listed above for an asymmetrical groove.

11 shows a schematic cross section of a portion of a facing plate 3 with a profiled longitudinal edge 4 a fourth embodiment for a composite 105 with a worktop 2 like him 12 shows. The facing plate 3 is different from the one in 4 shown facing plate in that a central spring 12 in the area of the profiled longitudinal edge 4 not symmetrical as in 4 is formed, but has an asymmetry, where as in 10 the spring trailing edge 14 as inclined flank 17 is formed while the spring leading edge 13 as a steep spring edge 16 was prepared. In this case, the width of the facing plate corresponds 3 the bead of a countertop 2 , so that a paragraph-free transition on the front views 24 between veneer board 3 and bead 21 the worktop 2 is available. Due to the inclined spring trailing edge 14 , which cooperates with a steep trailing edge, is achieved that a precise arrangement of the facing plate 3 in the bead of a countertop is possible.

Such a precise paragraph-free transition of the front views 24 with an asymmetrical spring of the facing plate 3 on the profiled longitudinal edge 4 will with 12 shown. The width of the front paragraph corresponds 19 the facing plate 3 the approach 23 of the bead 21 on which the facing plate 3 after insertion into the groove 8th supported. In this case, facing plates with a drip or veneer boards, which also have an asymmetrical design in addition to an asymmetric spring, by only one side either a randseitiger paragraph 18 or a frontal paragraph 19 for the facing board 3 be provided, the composite 105 form.

Despite the possibility of achieving a precise composite according to the invention in cross-section, nevertheless a warping or a distortion of the worktop 2 occur, especially if the thickness of the countertop 2 is minimized. As with the thickness of the countertop 2 As the cost of this composite solution increases, an attempt is made to increase the thickness of the countertops 2 the expensive layer-free material of the worktop 2 to be kept as low as possible.

13 shows a schematic cross cut through a composite 106 without a substructure to support the dimensional stability of the composite 106 , As the worktop shown here 2 Having a small thickness, warpage can affect the length of the worktop 2 impact such that a longitudinal gap 47 on the profiled longitudinal edge 4 the facing plate 3 occurs, which is undesirable. It is quite possible that even with a support of the worktop 2 with the help of a substructure such column 47 occur when the coefficient of expansion between worktop 2 and the substructure not shown here. There is also the risk of such warping when a waterproof countertop 2 is connected to a substructure, which can absorb water and warps due to the absorption of water. Also in this case can be unwanted column 47 networked 106 between vertical facing plate 3 and horizontal worktop 2 arise.

Another disadvantage with thicker worktops 2 , which are self-supporting and dimensionally stable, is that the stratified material of a mineral material is not suitable to allow wood screws for attaching the countertop on bases or floor cabinets, as these wood screw thread even with a pre-drilling in the mineral plate breaking out of the notch-sensitive brittle material causing the incisive turns. Therefore, it is desirable, on the one hand to provide shape stabilization of the composite, the worktop with a substructure, in addition to adapt the thermal properties of the substructure to the thermal requirements of the worktop or provide appropriate compensation layers between worktop and substructure. Finally, a simple inexpensive mounting option between the substructure of the worktop and base cabinets or bases is to be made possible.

14 shows a schematic cross section of a composite 107 a further embodiment of the invention. It is on the bottom 36 the worktop 2 a supporting substructure 26 with a laminated composite panel 28 arranged, which is a waterproof laminate side 29 and a waterproof postforming-coated front edge 30 made of laminate 31 having. As such laminated composite panels 28 Moisture can absorb and thus there is a risk that a not shown here gap in the composite 107 forms, becomes the waterproof laminate side 29 the laminated composite panel 28 as a base 32 the substructure 26 used. The postforming-coated front edge 30 the laminated composite panel 28 is the front edge 20 the worktop 2 aligned.

The front edge 20 the worktop 2 is cohesive with the worktop 2 connected and may be made of a strip of a corresponding coating-free material plate. The in principle reverse assembly of laminated composite board 28 with its laminate side 29 down has the advantage that this laminate composite plate 28 remains protected from moisture absorption. In addition, there is the advantage that the attachment, which necessarily means the arrangement of the composite 107 on a base or on a base cabinet is required, can now be carried out easily by means of wood screws.

To the sight of the countertop 2 to imitate as a solid worktop is the front edge 20 as 15 shows as far pulled down that he is the substructure 26 completely covers the composite.

However, since there is a gap between the postforming-coated front edge 30 made of laminate 31 and the front edge 20 may occur, this gap is preferably with a as in 16 shown sealing element 43 sealed to prevent completion of this gap with dust particles, fats or other contaminants. To show the 15 and 16 corresponding details of the front edge 20 in cooperation with the laminate plate 28 and their laminate side 29 as well as the worktop 2 with the bottom 36 , Also shows 16 the preferred way, the front edge 20 as a thermoplastic bent edge 50 the worktop 2 made of thermoplastic or a mineral material.

The substructure 26 , as 14 shows, can in different ways with a bottom 36 the worktop 2 be connected. In addition shows 17 a schematic cross section through a composite 108 according to a further embodiment of the invention. To compensate for a different coefficient of expansion, for example, for a substructure 26 from a laminate plate at 1 x 10 ^-5 ° C ^-1 to 2 x 10 ^-5 ° C ^-1 , while a mineral plate depending on the degree of filling of the Basisacryls with mineral particles has a coefficient of expansion between 3 · 10 ^-5 ° C ^-1 and 6 · 10 ^-5 ° C ^-1 , considerable thermal stresses would inter mediate the substructure 26 and the worktop 2 result in what the formation of a gap in the composite, as is 13 shows could cause. This one works in 17 shown compliant layer 35 , preferably made of an elastomer, so that the different expansion properties are not in a warping of the worktop 2 impact. Instead of such an elastomeric cohesive connection between substructure 26 and the bottom 35 the countertop can too a compliant connection can be provided.

18 shows a schematic cross section through a composite 109 according to a further embodiment of the invention. This composite 109 is characterized by a substructure 26 supported and dimensionally stable by the substructure 26 despite having different coefficients of expansion has a Velcro strip fixation. Such an embodiment of the composite 109 provides a high dimensional stability due to the thickness of the substructure in the vertical direction and a high flexibility along the coordinates of the worktop plane due to the Velcro strip fixation. Thus, differences in the coefficient of expansion between worktop affect 2 and substructure 26 on the composite 109 not negative. It is rather by the substructure 26 the dimensional stability of the composite 109 supported.

19 shows a schematic cross section through a composite 110 a further embodiment of the invention. With a sufficient thickness of the worktop 2 in the range of over 5 mm can be dispensed with a planar support as in the previous embodiments and only a frame 27 as a substructure 26 be formed, which is below the bead 21 is fixed to a dimensional stability of the composite 110 to ensure. For this purpose, the frame as a hollow profile 34 be formed and one of the thermal expansion coefficient of the material of the worktop 2 have adjusted coefficients of expansion. Since the coefficient of thermal expansion of aluminum alloys is almost twice as high as the coefficient of expansion of a laminate composite plate, as used in the preceding embodiments, the difference in the expansion coefficient of an aluminum alloy and a mineral plate is already kind of low, that on a leveling layer between the substructure of a hollow aluminum profile frame 27 and the worktop 2 can be dispensed with mineral.

Will the thickness of the countertop 2 further reinforced, so that it is practically self-supporting, could be dispensed with a substructure, but such thick materials on the one hand with high production costs associated and on the other hand, the problem remains that in such a countertop 2 From simple mineral wood screws can not be screwed without damaging the mineral plate, which is not a problem in aluminum with a corresponding pilot hole.

Instead of the aluminum, a frame of a rigid PVC (polyvinylchloride) profile can also be used as a substructure, or a bakelite filled with wood flour can be used. In addition, foamed plastics can be used for the substructure if their expansion coefficient is the same as for hard PVC and bakelite for the expansion coefficient of the mineral material of the worktop 2 equivalent.

20 shows a schematic cross section through a composite 111 according to a further embodiment of the invention. The problem of supporting the dimensional stability of the composite 111 is achieved in this embodiment of the invention in that a honeycomb structure is used as a substructure, which has an anisotropy in its compliance. So the compliance is vertical to the worktop surface 6 significantly less than the compliance in the plane of the bottom 36 the worktop 2 for such a substructure 26 , In such a case, the substructure 26 the composite 111 stable or support and still a high difference between the thermal expansion coefficient of the material of the substructure 26 such as a pulp-based substructure 26 and the material of the worktop 2 compensate.

21 shows a schematic cross section through a composite 112 a further embodiment of the invention. The difference to the previous figures is that the worktop 2 a pattern 38 of recesses 39 in which spacers 40 in the form of balls 41 can be arranged to thereby the top 6 the worktop 2 To protect against high thermal expansion, as an air cushion of thickness h forms when the hot plate of a container such as a saucepan is to be turned off on the worktop. Because the heat-resistant balls 41 touching the hot ground only in one point at a time, is the heat transfer to the top 6 the worktop 2 extremely low, leaving the countertop both from warping against the substructure 26 as well as before a bulging of the bead 21 is protected.

22 shows a schematic cross section through a composite 113 a further embodiment of the invention, in which case the worktop 2 from strong warming, and thus from possible warping against the substructure 26 as well as the bead 21 of the network 113 , is protected by the fact that for hot containers to be dropped a pattern 38 from elongated recesses 39 is provided, which allow a distance at height h, wherein the spacers 40 rod-shaped elements 42 form and heat the bottom of a heated container only via contact lines on the countertop 2 transfer. This will make the countertop 2 thermal expansion and any associated warpage and distortion from the substructure 26 as well as ge over the bead 21 of the network 113 protected.

1... 101 to 113

composite (Embodiments)

2

countertop

3

facing plate

4

longitudinal edge the facing plate

5

edge or behind the worktop

6

top the worktop

7

Material board (layered mineral plate)

8th

groove

9

groove base

10

Nutvorderflanke (Working plate side)

11

Nuthinterflanke (Wall side)

12

feather

13

Spring leading edge

14

Spring trailing edge

15

rounding throat

16

steep flank

17

inclined flank

18

paragraph the facing panel (wall side)

19

paragraph the facing panel (front)

20

leading edge the worktop

21

bead the worktop

22

fillet of the bead

23

approach

24

front view

25

drip nose

26

substructure

27

frame the substructure

28

Laminate composite panel as a substructure

29

Laminated side

30

leading edge the laminate plate

31

laminate

32

bottom the substructure

33

sandwich panel (Thermal stabilized)

34

hollow profile

35

layer (Elastomeric)

36

Worktop

37

Velcro strips fixation

38

template

39

recess

40

spacer

41

Bullet (Heat-resistant)

42

Rod (Heat-resistant)

43

sealing element

44

Nutoberkanten

45

rounded Degree

46

back the facing plate

47

gap

48

fold

48

paragraph

49

Bute Edge of the worktop

50

bent Edge of the worktop

51

approach for supporting the facing plate

52

adhesive bond

r _g

rounding radius of a degree

r _k

rounding radius

n

groove width

f

spring width

H

thickness an air cushion

Claims (29)

Composite of a horizontal worktop ( 2 ) with a vertical wall-facing facing plate ( 3 ), wherein the facing plate ( 3 ) with a longitudinal edge ( 4 ) on the wall edge ( 5 ) of the worktop ( 2 ), characterized in that at least the worktop ( 2 ) to the visible upper side ( 6 ) a layer-free material plate ( 7 ), wherein the wall-side edge ( 5 ) of the worktop ( 2 ) a groove ( 8th ), which in groove cross-section a groove bottom ( 9 ), a worktop-side groove leading edge ( 10 ) and a wall-side trailing edge ( 11 ), in which the to a spring ( 12 ) with spring front ( 13 ) and spring trailing edge ( 14 ) profiled longitudinal edge ( 4 ) of the facing plate ( 3 ) is arranged at least partially, wherein the cross section of the groove ( 8th ) or the spring ( 12 ) in relation to front ( 10 . 13 ) and trailing edge ( 11 . 14 ) is asymmetric and groove ( 8th ) or spring ( 12 ) at least one steep flank ( 16 ) and a sloping flank ( 17 ) exhibit. Composite according to claim 1, characterized in that the groove cross section in the transition from the groove bottom ( 9 ) to the groove flanks ( 11 ) Fillets ( 15 ) having a rounding radius r _k ≤ 0.5 b with b of the groove base width. Composite according to claim 1 or claim 2, characterized in that the worktop ( 2 ) a reinforced rear edge ( 5 ), in which the groove ( 8th ) is arranged, and a veneering front edge ( 20 ) having. Composite according to claim 3, characterized in that the worktop ( 2 ) has a thermoplastic material and as a reinforced rear edge ( 5 ) and / or as a delimiting leading edge ( 20 ) a bent edge ( 49 ) made of worktop material. Composite according to claim 4, characterized in that the raised edge ( 49 ) a groove ( 8th ) partially in a bead ( 21 ) is incorporated. Composite according to one of claims 1 to 5, characterized in that the reinforced rear edge ( 5 ) a bead ( 21 ) forming the groove ( 8th ) and that to the top ( 6 ) of the worktop ( 2 ) a groove ( 22 ), wherein the groove ( 22 ) flush with the top ( 6 ) of the worktop ( 2 ) or with a paragraph ( 49 ). Composite according to one of the preceding claims, characterized in that the groove ( 8th ) of the worktop ( 2 ) a steep flank ( 16 ) and a sloping flank ( 17 ) and the spring ( 12 ) parallel steep flanks ( 16 ) having. Composite according to one of the preceding claims, characterized in that the groove ( 8th ) of the worktop ( 2 ) parallel steep flanks ( 16 ) and the spring ( 12 ) of the facing plate ( 3 ) a steep flank ( 16 ) and a sloping flank ( 17 ) having. Composite according to one of the preceding claims, characterized in that the groove ( 8th ) of the worktop ( 2 ) a steep leading edge ( 16 ) and a sloped trailing edge ( 17 ) having. Composite according to one of the preceding claims, characterized in that the groove ( 8th ) of the worktop ( 2 ) an inclined leading edge ( 17 ) and a steep trailing edge ( 16 ) having. Composite according to one of the preceding claims, characterized in that a sloping flank ( 17 ) has an inclination ratio of between 1:20 and 1: 1, preferably between 1:10 and 1: 3 to the vertical. Composite according to one of the preceding claims, characterized in that the weight of the vertical facing plate ( 3 ) the profiled longitudinal edge ( 4 ) of the facing plate ( 3 ) in the asymmetric groove ( 8th ) along an inclined groove flank ( 17 ) of the groove ( 8th ) and against a steep groove flank ( 16 ) presses non-positively. Composite according to one of the preceding claims, characterized in that the veneer plate ( 3 ) at its in the groove ( 8th ) seated profiled longitudinal edge ( 4 ) a wall-side paragraph ( 18 ) located on the wall edge ( 5 ) of the worktop ( 2 ) is supported such that the groove bottom ( 9 ) is relieved. Composite according to one of the preceding claims, characterized in that the veneer plate ( 3 ) at its in the groove ( 8th ) seated profiled longitudinal edge ( 4 ) a frontal paragraph ( 19 ) based on a frontal approach ( 23 ) of the worktop ( 2 ) in such a way that the composite ( 1 ) a paragraph-free smooth front view ( 24 ) having. Composite according to one of claims 1 to 13, characterized in that the facing plate ( 3 ) at its in the groove ( 8th ) seated profiled longitudinal edge ( 4 ) a frontal paragraph ( 19 ), which has a frontal approach ( 23 ) of the worktop ( 2 protrudes). Composite according to one of the preceding claims, characterized in that the worktop ( 2 ) a supporting substructure ( 26 ) having at least one peripheral frame ( 27 ) and the rear edge ( 5 ) of the worktop ( 2 ) with the groove ( 8th ) for receiving the load of the vertical facing plate ( 3 ) warp-free and warp-free supports. Composite according to claim 16, characterized in that the worktop ( 2 ) as a supporting substructure ( 26 ) a laminate composite plate ( 28 ) having a waterproof laminate side ( 29 ) and a waterproof postforming-coated front edge ( 30 ) of laminate ( 31 ), wherein the laminate composite plate ( 28 ) as a substructure ( 26 ) is arranged such that the waterproof laminate side ( 29 ) of the laminated composite panel ( 28 ) the bottom ( 32 ) of the substructure ( 26 ) and the postforming-coated leading edge ( 30 ) of the laminated composite panel ( 28 ) to the front edge ( 20 ) of the worktop ( 2 ) is aligned. Composite according to claim 16 or claim 17, characterized in that the worktop ( 2 ) with the substructure ( 26 ) a thermostabilized composite sheet ( 35 ), the substructure ( 26 ) to the worktop ( 2 ) has adapted thermal properties. Composite according to one of Claims 16 to 18, characterized in that the substructure ( 26 ) a hollow profile ( 34 ), wherein the material of the hollow profile ( 34 ) one to the worktop ( 2 ) identifies adapted thermal expansion coefficients. Composite according to one of Claims 16 to 19, characterized in that the substructure ( 26 ) comprises an aluminum alloy. Composite according to one of Claims 16 to 20, characterized in that the substructure ( 26 ) comprises a rigid PVC (polyvinylchloride), a wood flour-filled bakelite or a foamed plastic. Composite according to one of Claims 16 to 21, characterized in that the substructure ( 26 ) is materially connected to the worktop via a layer of resilient material. Composite according to one of claims 16 to 22, characterized in that the substructure ( 26 ) anisotropy in terms of their dimensional stability with a greater dimensional stability orthogonal to the worktop underside ( 36 ) than in the worktop plane. Composite according to one of Claims 16 to 23, characterized in that the substructure ( 26 ) has an anisotropy with respect to its compliance with a greater compliance in the worktop plane than orthogonal to the worktop underside ( 37 ) having. Composite according to one of Claims 16 to 24, characterized in that the substructure ( 26 ) with the worktop ( 2 ) via a Velcro strip fixation ( 37 ) connected is. Composite according to one of claims 16 to 25, characterized in that the worktop ( 2 ) and the veneer plate ( 3 ) Have mineral plates. Composite according to one of the preceding claims, characterized in that the worktop ( 2 ) a pattern ( 38 ) of recesses ( 39 ) into which heat-resistant spacers ( 40 ) can be inserted. Composite according to claim 27, characterized in that the heat-resistant spacers ( 40 ) Balls ( 41 ) or bars ( 42 ) and where the pattern ( 38 ) of the recesses ( 39 ) is adapted in its planar arrangement of the floors heated container. Composite according to claim 27, characterized in that the heat-resistant spacers ( 40 ) an air cushion having a thickness h between the bottom of a heated bottom of a container and the top ( 6 ) of the worktop ( 2 ) exhibit.