DE202018006784U1 - Arrangement of two panel-shaped elements connected to one another - Google Patents

Abstract

Arrangement of two panel-shaped elements (1, 2) connected to one another, in particular furniture panels or worktops, which bear against one another at a panel angle (γ) along a contact surface (3), the contact surface (3) being parallel at least in sections in a first region (I). to an angle bisector (α) to the angle enclosed between the side surfaces (4, 5, 6) of the elements (1, 2) and in a second region (II), in particular parallel to a side surface (4, 5, 6) of one of Elements (1, 2) runs, and wherein the contact surface (3) in the first region (I) and third region (III) separated by the second region (II) follows the course of the contact surface (3) in the second region (II ) each includes an angle (α, β) with an opposite gradient, characterized in that the contact surface (3) transversely to its main extent in height or material thickness of the elements (1, 2) at least in sections a concave and / or r has a convex course, so that the arrangement achieves a positive connection in the plane of the elements (1, 2) and in the transverse direction thereto in the direction of the height or thickness of the elements.

Description

The invention relates to an arrangement of two panel-shaped elements connected to one another, in particular furniture panels or worktops, made of plastic, wood or stone, which lie against one another at an obtuse or acute angle along a contact surface, the contact surface in a first region being at least partially parallel to an angle bisector to the angle enclosed between the elements and, in a second region, in particular parallel to a side face of one of the elements.

An apparently prior arrangement of two joined panel members in a butt joint for worktops has grooves in the contact surface of the abutting faces. Flat plates corresponding to the width of the grooves are inserted side by side into the grooves and ensure alignment of the surfaces of the worktops to be connected.

The end faces lying against one another at the contact surface are clamped together by tensile force connectors, for example stressing anchors, inserted into the worktops. Although manufacturing tolerances in the width of the groove and the thickness of the plates can limit misalignment in the surface of the worktops, the worktops must also be carefully aligned when they are connected to one another.

In addition to careful alignment, a prerequisite for a corner connection of such panel-shaped elements is, above all, precise processing. If the worktop has a round edge, corner transitions between two elements must be made as a bisecting line to the corner of the room. In principle, the connection of plate-shaped elements that do not meet one another in parallel, such as in the case of corner connections in particular, can be carried out in two different variants. The simplest variant of such a connection is a diagonal cut, which is easy to make and can be made with simple tools. The disadvantage of this variant, however, is the relatively large waste.

In contrast, corner connections can be produced with little waste in that the required diagonal cut is only made to a limited extent over a short length of the first area, which is slightly larger than the extent of the rounding.

The further course of the cut is parallel to the side surface or the main axis of one of the elements. The waste is limited to a few centimetres, so that the panel-shaped element can be used almost completely. In practice, a milling template is used for this.

After the elements have been processed, the connection along the contact surface designed in this way is realized by means of tensile connectors, for example tie rods, by means of which the plate-shaped elements are braced against one another.

For example, from the DE 31 46 805 A1 known such a tensile connector for two worktops of kitchen furniture. On the underside of each plate there is a cutout for each connector and a groove through which the tie rod runs.

Of the EP 1 253 330 A1 is based on the task of designing the butt joint in such a way that worktops that are clamped flush with their opposing, adjacent end faces without offset in the work surface. The worktops are centered against each other when the butt joint is tightened. The connection is free of play due to the wedge effect of the alignment elements.

From the DE 73 20 840 U the milling of abutting edges of worktops with a curved edge for a right-angled connection is known, for example to connect the worktops to one another in a T-shape. For this purpose, a miter edge is milled on the curved edges on both sides of a longitudinal edge, so that the two surfaces of the worktops fit together at the same level at every point.

the DE 20 2016 005 283 U1 refers to a connecting fitting for connecting two butt-jointed worktops. The back of the worktops is equipped with channels delimited by web structures into which a connecting element is inserted. In order to create a flush worktop connection for lightweight panels, the connecting element is pushed into the monodirectional web structures, thereby achieving a flush alignment of the panels.

Also describes the GB 2 240 744A an arrangement of two interconnected, strip-shaped frame elements which bear against one another along a contact surface. Designed as posts or crossbeams, the elements can be joined together in a cross configuration, allowing the creation of square or rectangular frames with all the required cross members, and can be square or rectangular and of any size as long as they are of uniform thickness.

In addition, the DE 20 2008 014 630 U1 on a frame made of wood for wooden windows.

In practice, the particularly undesirable height offset can be largely avoided by the usual measures, but there is often a relative displacement of the two plate-shaped elements in the common plane. This is mainly due to the fact that the tongue and groove connection of the elements limits the undesirable height offset, but cannot prevent relative displacement in the common main plane. Due to the fact that the tension connectors are installed on the underside facing away from the surface, the relative position of the elements is not visible to the installer, or only to a very limited extent, during installation. Once the plate-shaped elements have been arranged, it can often only be changed after completion with considerable effort. In particular, subsequent adjustment of the relative positions of the elements is often ruled out due to the usual gluing along the contact surface.

The invention is based on the object of creating a possibility of prefabricating the plate-shaped elements in such a way that they only reliably assume the predetermined desired position by being braced against one another. In particular, in addition to the height offset, a deviating relative displacement in the common main plane should also be excluded.

According to the invention, this object is achieved with an arrangement according to the features of claim 1 . The further development of the invention can be found in the dependent claims.

According to the invention, an arrangement is therefore provided in which the contact surface has a third region in which the contact surface encloses an in particular obtuse angle with the contact surface in the second region, the contact surface in the first region having an opposite direction to the contact surface in the third region incline runs. As a result, a form-fitting fixation and at the same time an automatic centering of the two elements that are prestressed against one another in the desired target position is achieved in a surprisingly simple manner. Since the second area, which runs parallel or at right angles to one of the main axes of extension, for example, is enclosed on both sides by a course of the contact surface that is inclined thereto, namely at an angle of opposite gradient, the two elements are reliably and without additional manual alignment in the predetermined forced relative position. The second area forms a convex-shaped projection, which engages in a concave recess formed by the first and third areas of the contact surface, so that the elements are positively connected along the contact surface. At the same time, the force components occurring during mutual bracing in a direction transverse to the joining direction, as they currently occur in practice and thus lead to visually perceptible position deviations, are reliably excluded by the fact that the course of the contact surface in the first and in the third forces occurring in the area cancel each other out. Although the arrangement according to the invention is preferably intended for use with flat worktops, for example kitchen worktops, it is also suitable for elements with any contour, for example worktops with trough-shaped indentations or other molded parts.

In this case, the gradients of the contact surface in the respective area preferably have a continuous, in particular linear course. In a particularly advantageous embodiment of the invention, the angle enclosed by the contact surface in the first region and by the contact surface in the second region essentially matches the angle enclosed by the contact surface in the second region and the angle enclosed by the contact surface in the third region. This ensures that the centering forces in the mutual fixation of the elements match in every phase of assembly and, in particular, an undesired relative movement of the elements is limited to the necessary extent.

The gradient angle of the contact surface in the first and/or third area could be selected in such a way that a self-locking clamping effect occurs in order to achieve a higher load capacity in the area of the entire contact surface. Furthermore, the angle is preferably measured according to the bisecting line to the angle enclosed by the respective main axes of the plate-shaped elements. On the other hand, it is particularly advantageous if the plate-shaped elements each have a rectangular basic shape and are connected in such a way that the main axes of extension or the side surface of the two elements enclose a right angle and that in the first area the contact surface forms an angle of about 45° with the main axis of extension or the side surface and in a second area, in particular parallel to one of the main axes of extension or the sides surface of one of the two plate-shaped elements in order to achieve a right-angled arrangement of the elements.

In another, likewise particularly advantageous embodiment of the invention, the contact surface in the third region runs only in a plane facing away from the surface visible to the viewer. This creates an embodiment in which the course of the contact surface according to the invention is provided in a lower plane, away from the outer surface, so that it is invisible to the viewer. In contrast, the surface can have a gradient-free profile in the third area, which linearly follows the profile in the second area. Due to the fact that the angled contact surface only extends over a portion of the height or thickness of the respective element, it remains invisible to the viewer in a plan view, so that the visual impression does not deviate from the arrangements known from the prior art.

Furthermore, it has proven to be advantageous if the length of the contact surface in the first area and the length of the contact surface in the third area are the same, in order to achieve a symmetrical shape and at the same time a consistent direction of force action when the elements are braced against one another ensure. This largely rules out assembly errors.

A further particularly practical embodiment of the invention is achieved in that the third area is arranged in an edge area of the plate-shaped elements facing away from the first area, so that the contact surface arranged at the angle of the third area extends to the outer edges of the plate-shaped elements.

Alternatively, the contact surface in a fourth region facing away from the third region can run parallel to the contact surface in the second region, so as to allow a perpendicular orientation of the contact surface in the region in relation to the plane of the outer edges of the elements.

Furthermore, it has proven to be particularly promising if at least one tensile force connector, in particular a tie rod, is assigned at least in one area, in particular the first and/or third area, for the mutual fixing of the elements, the line of force of which is essentially perpendicular to the contact surface in the respective area. Since the force for mutual bracing of the elements acts on them transversely to the contact surface in the respective area, a force component parallel to the contact surface is avoided, which in the prior art can lead to an undesired relative displacement of the elements. In practice, for example, two tensile connectors can be used in the first and third areas in a symmetrical arrangement with respect to the contact surface and/or the central longitudinal axis of the respective element.

In another, also particularly expedient embodiment of the invention, the contact surface has a concave and/or convex course transversely to its main extension in the height or material thickness of the elements, at least in sections, in order not only to create a positive connection in the plane of the elements, but can also be achieved in the transverse direction in the direction of the height or strength of the elements. As a result, reliable compliance with the predetermined target position in the direction of all spatial axes is ensured for the first time and assembly is made much easier. In particular, prefabricated elements of this type are also suitable for assembly by non-professionals.

The invention is also achieved by an arrangement of two panel-shaped elements connected to one another, in particular furniture panels or worktops, the main axes of which run parallel to one another, in that the contact surface extends into the first and third regions, which are separated by the second region, with the course of the contact surface in the second area each includes an angle with an opposite slope. This arrangement therefore does not form a corner connection, but rather a particularly flush longitudinal connection of two panel-shaped elements, in order to produce, for example, worktops of great length by connecting several individual panels. As a result of the first and third areas with a profile of the contact surface with opposite gradients, the desired relative centering is automatically set during assembly, so that manual alignment of the elements is no longer necessary.

• 1 eine Draufsicht auf eine erfindungsgemäße Anordnung zweier plattenförmiger Elemente;
• 2 eine vergrößerte Darstellung einer Kontaktfläche der plattenförmigen Elemente;
• 3 einen Querschnitt durch die Kontaktfläche der Elemente.

The invention permits various embodiments. To further clarify its basic principle, one of them is shown in the drawing and is described below. This shows in

• 1 a plan view of an inventive arrangement of two plate-shaped elements;
• 2 an enlarged view of a contact surface of the plate-shaped elements;
• 3 a cross section through the contact surface of the elements.

1 and 2 each show a top view of the arrangement of two plate-shaped elements 1, 2, which are connected to one another by clamping elements (not shown) and are designed as worktops. The elements 1, 2, which are connected to one another by a plate butt joint in an angular arrangement along a contact surface 3, close in relation to the respective main axes A1 , A2 of the elements 1, 2 enter a right angle, shown only as an example, as the plate angle γ, wherein in particular any other plate angles γ′, γ″ that deviate from this can also be realized according to the invention. In order to achieve a contour-flush transition in an area I of the front side surfaces 4, 5 including the corner connection, the contact surface 3 first follows a so-called diagonal cut in a manner known per se, in which the contact surface 3 in the first area I along the bisecting line to the between the elements included right angles and thus at an obtuse angle α to the side surfaces 4, 5 runs. In practice, the length L of this first region I is limited to less than 10 cm, in particular between 2 cm and 6 cm, in order to keep the waste occurring on the element 1 as small as possible. The first area I is followed by a second area II, in which the contact surface 3 runs essentially parallel to the side surface 5 of the second element 2 . In a third region III facing away from the front edge and facing a rear side surface 6, the contact surface 3 runs in such a way that it encloses an obtuse angle β with the contact surface 3 in the second region II and runs with an opposite slope. The angle α enclosed by the contact surface 3 in the first region I and by the contact surface 3 in the second region II corresponds to the angle β enclosed by the contact surface 3 in the second region II and by the contact surface 3 in the third region III essentially match. As a result, a form-fitting fixation and at the same time an automatic centering of the two elements 1, 2 prestressed against one another in the desired desired position is achieved in a surprisingly simple manner. The second area II forms a projection that engages in a concave recess formed by the first area I and third area III, so that the force components occurring during the mutual bracing in a direction transverse to the joining direction, as they often in practice lead to an impairment of the Appearance lead, can be reliably excluded. In particular, the forces occurring due to the course of the contact surface 3 in the first area I and in the third area III cancel each other out and thus prevent a relative displacement of the elements 1, 2 in the common main plane of extension. In order to facilitate the processing of the rear side surface 6, the contact surface 3 runs parallel in a fourth region IV facing away from the third region III, in particular on a common axis with the side surface 5.

In 3 the contact surface 3 of the elements 1, 2 is additionally shown in a cross section. As can be seen, the elements 1, 2 in the area of the contact surface 3 are positively fixed in a central area between the surfaces of the elements 1, 2 by a convex profile designed as a projection 7 and a concave profile designed as 8 in the relative plane of the plate. As a result, unwanted differences in height of the elements 1, 2 are excluded.

Reference List

1

element

2

element

3

contact surface

4

side face

5

side face

6

side face

A1

main axis

A2

main axis

7

head Start

8th

Recording

I

area

II

area

III

area

IV

area

a

angle

β

angle

L

length

g

plate angle

QUOTES INCLUDED IN DESCRIPTION

This list of the documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 3146805 A1 [0008]
• EP 1253330 A1 [0009]
• DE 7320840 U [0010]
• DE 202016005283 U1 [0011]
• GB 2240744A [0012]
• DE 202008014630 U1 [0013]

Claims (6)

Arrangement of two panel-shaped elements (1, 2) connected to one another, in particular furniture panels or worktops, which bear against one another at a panel angle (γ) along a contact surface (3), the contact surface (3) being parallel at least in sections in a first region (I). to an angle bisector (α) to the angle enclosed between the side surfaces (4, 5, 6) of the elements (1, 2) and in a second region (II), in particular parallel to a side surface (4, 5, 6) of one of Elements (1, 2) runs, and wherein the contact surface (3) in the first region (I) and third region (III) separated by the second region (II) follows the course of the contact surface (3) in the second region (II ) each includes an angle (α, β) with an opposite gradient, characterized in that the contact surface (3) transversely to its main extent in the height or material thickness of the elements (1, 2) at least in sections a concave and / or it has a convex course, so that the arrangement achieves a positive connection in the plane of the elements (1, 2) and in the transverse direction thereto in the direction of the height or thickness of the elements. arrangement according to claim 1 , characterized in that the angle (α) enclosed by the contact surface (3) in the first region (I) and by the contact surface (3) in the second region (II) and that of the contact surface (3) in the second region (II) and the angle (β) enclosed by the contact surface (3) in the third region (III) and/or the length (L) of the contact surface (3) in the first region (I) and the length (L) of the Contact surface (3) the third region (III) are substantially the same size. Arrangement according to claims 1 or 2 , characterized in that the contact surface (3) in the third region (III) runs only in a plane facing away from the surface visible to the viewer. Arrangement according to at least one of the preceding claims, characterized in that the third area (III) is arranged in an edge area of the plate-shaped elements (1, 2) remote from the first area (I). Arrangement according to at least one of the preceding claims, characterized in that at least one area (I, II, III), in particular the first area (I) and/or third area (III), has at least one tensile connector for mutual fixing of the elements (1, 2 ) is assigned, the line of action of which is essentially perpendicular to the contact surface (3) in this area (I, II, III). Arrangement of two panel-shaped elements (1, 2) connected to one another, in particular furniture panels or worktops, the main axes (A1, A2) of which run parallel to one another, the contact surface (3) being parallel to the main axes (A1 , A2) separate first area (I) and third area (III) with the course of the contact surface (3) in the second area (II) each includes an angle (α, β) with an opposite gradient, characterized in that the contact surface (3) has a concave and/or convex course transversely to its main extension in the height or material thickness of the elements (1, 2), at least in sections, so that the arrangement has a form-fitting connection in the plane of the elements (1, 2) and in the transverse direction this is achieved in the direction of the height or strength of the elements.

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