EP3243996B1 - Plate-shaped wood system and method for manufacturing a plate-shaped wood system - Google Patents

Description

The invention relates to a multi-part and panel-shaped wood system and a method for producing this wood system.

Doors often consist of numerous elements that are connected to form a system. From the US6112496A a door system is known which consists of wooden elements and metal elements which are connected to one another by connecting elements. Wooden elements are often connected to one another using adhesives, which is undesirable for ecological reasons.

Panel-shaped wooden elements are also often used for furniture, in particular for table tops, doors, covers, room dividers or cabinet fronts. Adhesive-free joined wood elements are also desirable for such applications for ecological and health reasons.

From [1], DE102011122697A1 , a solid wood mortise and tenon joint for furniture parts is known. A pin arranged on a first piece of wood can be inserted and locked in a corresponding recess in a second piece of wood. Disadvantages here are the difficult-to-manufacture geometries for the pin and recess, as well as the connection force that depends on the ambient temperature and humidity due to the expansion and shrinkage of wood.

From [2], WO200828925A1 , A method for the production of panel-shaped components, in particular made of wood, is known. At least three layers of boards are connected to each other by dowels without using adhesives. The disadvantage here is that high pressure has to be exerted on the boards when driving in the dowels, which is associated with high production costs and complicated process parameters.

From [3], CH698988B1 , floor panels are known which are assembled without adhesive. Floor panels of this type, on the other hand, are supported by the ground and therefore do not require any inherent stability. Temperature expansion can also be compensated for by laying the floor panels appropriately.

From [4], DE8704341U1 , a door construction made of solid wood is known, in which the door leaf is made up of several block-glued planks, which are connected to one another by tongue and groove connections. In addition, a cut-out is provided on both front sides of the door leaf, into which an end-grain strip is inserted flush and fixed by gluing or screwing. This solution is often not feasible, since doors regularly have a rebate and/or a seal seated in a groove on the face side. There is therefore no space available for milling the end face and inserting a strip.

From [5], EP2851497A1 It is also known that in the case of sliding doors, recesses are often inserted into the end faces, which serve to accommodate a fitting which can be connected to a running gear guided in a running rail. The space on the front sides of the door leaf of a revolving door or a sliding door is therefore often reserved for other purposes. In addition, strips provided on the face side only allow peripheral stabilization of the door leaf.

[6], CH700181B1 discloses a flat wooden element with a plurality of longitudinal strips made of solid wood running parallel in a longitudinal direction, which are mechanically connected to one another on their long narrow sides in such a way that they have play with one another. A transverse strip is provided transversely to the longitudinal direction of the longitudinal strips, which is firmly glued to every second longitudinal strip in a main glue area. In order to accommodate crossbars, indentations or recesses running transversely to the longitudinal direction are milled into the back of the door leaf, into which a crossbar is inserted. These crossbars are therefore visible on the back of the wooden element, which is why an undesirable aesthetic impression results. In addition, the use of glue is undesirable. The millings are also open to the outside, why there is a weakening and for what purpose and moisture can penetrate.

the FR2209885A1 discloses a door with wooden slats aligned parallel to one another, which are provided with openings into which hinge rods are inserted, which are riveted to individual ones of the wooden slats.

FR2590331A1 discloses a door panel with wooden slats aligned parallel to one another, which are provided with openings into which assembly keys are inserted, which have end pieces with anchor elements on both sides, which are anchored in the edge wooden slats.

NL8204296A discloses a door panel with wooden slats aligned parallel to one another, which are provided with openings into which a cross piece is inserted. This allows the door panel to be assembled quickly, since the wooden slats can be placed sequentially on the crosspiece during assembly. The individual wooden slats have a groove on one side and a tongue on the other side, which engage in pairs and can shift against each other in the event of thermal expansion.

The present invention is therefore based on the object of creating an improved panel-shaped wood system and an improved method for producing such a wood system. In particular, a panel-shaped wood system is to be created which is not afflicted with the deficiencies described above.

The method is intended to allow wood panels made of solid wood of different thicknesses to be joined together to form a wood system according to the invention.

It should be possible to produce high-quality, ecologically sustainable room doors or cabinet, furniture and kitchen fronts that preferably do not contain any adhesives.

The processed wood should work, i.e. shrink, swell and warp without this having a negative effect on the wood system.

The wood system should be advantageously designable and be able to be manufactured with a modern or classic, simple or artistically sophisticated appearance. It should be avoided that parts of the wood system appear unfavorable and impair the aesthetic appearance of the wood system.

The panel-shaped wood system should be universally usable and e.g. as a door or door leaf, in particular front door, room door, and furniture door, e.g. cabinet door or shaft door, and be able to compensate for corresponding force and/or pressure loads while maintaining its function.

The door leaf should be able to be provided peripherally with connecting elements, locking elements or fittings, as well as with folds, grooves and seals and the like, so that the wood system can be used without restrictions in conventional systems and devices.

The panel-shaped wood system should preferably be able to be assembled with little effort without the use of glue.

The assembled wood system should have a high level of inherent stability and a long service life.

Furthermore, the panel-shaped wood system should be able to absorb temperature and humidity fluctuations that usually occur in the area of a house while maintaining its function. Stresses within the wood system and changes in dimensions that can cause disruptions should be avoided.

The wood system and its elements should also be able to be manufactured and assembled inexpensively and efficiently, preferably partially or completely automatically.

This object is achieved with a panel-shaped wood system and with a method which have the features specified in claims 1 and 11, respectively. Advantageous configurations of the invention are specified in further claims.

The panel-shaped wood system comprises on opposite longitudinal sides a first or second side element in the design of elongated solid wood elements, which are aligned parallel to one another and between which a central element with several central strips in the design of elongated solid wood elements are provided, and at least one cross brace, which is at least approximately perpendicular aligned with the two side panels and the center panel.

According to the invention, the central strips and optionally the first side element and/or the second side element are provided with openings which form at least one self-contained receiving channel into which the at least one cross brace is inserted, which is connected to the first side element by at least one first holding means and by at least a second retaining means is connected to the second side panel.

The cross brace used in the receiving channel is therefore fully integrated into the wood system and is neither aesthetically nor functionally disruptive. The cross brace is not visible from the outside and is preferably also not arranged in the periphery of the wood system, which is why recesses, folds and grooves can be provided on all edges of the wood system, e.g. a door leaf, and fittings and seals can be used. The panel-shaped wooden system can thus be processed and used like a uniform wooden panel. The wood system can be used, for example, as the door leaf of a sliding door and provided with recesses on the face side, into which fitting devices can be inserted, which can be connected to carriages that are slidably mounted in a running rail mounted on the ceiling or in a guide rail mounted on the floor.

The holding means can be sunk deep into the side elements and closed with covering means, such as wooden pegs, so that they are not in the edge area of the wooden system.

The elements of the door system are mechanically connected to each other, which is why the use of glue can be completely dispensed with. Due to the advantageous mechanical connection and the integration of one or more cross braces in the wood system, this is not only peripherally but completely stabilized, which is why unfavorable dimensional changes in the wood system can be avoided. The wood system with the integrated cross braces also has a high level of inherent stability. The front and back of the wooden system are smooth and have no weakening, which is why the penetration of dirt and moisture is prevented.

According to the invention, an expansion joint is arranged between the central element and the second side element, which serves to absorb expansions of the central element and the side elements. The expansion joint absorbs natural material expansions in the wood system, which occur due to changes in temperature and/or humidity. Since the first and the second side element are firmly connected to one another by the cross brace, the wooden elements bordering on both sides of the expansion joint can be pushed into it and stresses in the material can be avoided. The outer dimensions of the panel-shaped wooden system thus remain at least approximately constant even with temperature and/or humidity fluctuations, so that no disruptive effects, such as a wooden door sticking after a temperature fluctuation, can occur. The dilatation joint comprises form-fittingly engaging molded parts, such as a dilatation comb that is preferably held without play in a dilatation groove, which can slide within the dilatation groove and nevertheless seals it tightly. The expansion joint, which tightly seals the opening between the side element and the adjoining center bar, is therefore hardly visible and still allows expansion of the wood system to be absorbed.

The central element comprises any number of central strips, which are designed as elongate solid wood elements and are connected to one another in a fixed or detachable manner. The central element is aligned at least approximately parallel to the first and/or second side element. Due to the production from several middle strips, the maximum width of the middle element is not limited by the diameter of the original wood, but can be expanded as desired. Even with larger dimensions, the cross braces can be used to ensure that the wooden system is aligned in one plane and does not deform.

In a further preferred embodiment, at least two transverse struts are provided which are aligned at least approximately perpendicularly to the two side elements and are connected to the first side element by at least one first holding element and to the second side element by at least one second holding element. A first cross brace is preferably arranged on the upper half and a second cross brace on the lower half of the panel-shaped wood system. This arrangement reduces lateral torsion.

The mounting bore or the mounting groove can be worked into the wooden elements, e.g. by drilling or milling. The term receiving hole is therefore not limited to drilling, but relates to a longitudinal opening or a partial channel with a cross section that corresponds to the cross section of the cross brace. This cross section is preferably at least approximately rectangular or rounded. The longitudinal opening or the partial channel is connected within the wood system and is neither accessible nor visible from the front and rear of the wood system, e.g can be.

If the panel-shaped wood system has more than one cross brace, a corresponding number of receiving channels is provided. In the first and/or in the second side element, the receiving bores of the receiving channel serving to receive the cross strut are preferably not designed to be continuous, so that the cross strut can only be inserted from one side and is not visible from the other side. In this preferred embodiment, the cross brace is thus arranged entirely inside the panel-shaped wood system, as a result of which the outside view of the panel-shaped wood system remains freely designable.

Preferably, the receiving channel or the corresponding recesses, bores, or milled-out portions in the wooden elements have a cross section that corresponds at least approximately to the cross section of the cross brace, so that the cross brace can be mounted at least approximately in a form-fitting manner and preferably without play in the receiving channel, but without material stretching to hinder. Since the wooden structure is provided in such a way that the wooden elements can stretch along their longitudinal axis, the cross brace is preferably held with play at the top and bottom in the receiving channel. Perpendicular to the door or to the wood system, the cross brace is preferably held without play in the receiving channel. the Wooden elements are therefore always kept aligned parallel to one another, but can stretch in the longitudinal direction.

In a further preferred embodiment, the receiving channel in which the crossbar is mounted has at least one groove projection running along the receiving channel, which is designed such that the crossbar guided in the receiving channel is guided and at least partially held in a form-fitting manner.

In a further preferred embodiment, the holding means are designed as wooden dowels and/or screws, preferably wood screws. The holding means are preferably used perpendicular to the main plane of extension of the panel-shaped wood system or parallel to the longitudinal axis of the cross brace. In a particularly preferred embodiment, drill holes that are visible from the outside and through which the holding means are inserted are sealed with a wooden cover, preferably a wooden dowel, after the holding means have been inserted, so that the panel-shaped wooden system has a consistent wooden look from the outside.

The one-part or multi-part middle element fills the space delimited by the first and the second side element at least almost completely. This creates the visual impression of a continuous wooden panel.

According to the invention, the first side element and the one-part or multi-part central element, optionally the central strips of the central element, are connected to one another by click connections or by anchor connections. According to the invention, the connection is designed in such a way that the individual elements are connected to one another in a form-fitting manner and are largely mechanically stable.

The anchor connections particularly preferably comprise an anchor groove which preferably tapers continuously and which runs along a first side surface of the first side element, the central element or the central strips, and a corresponding and itself preferably continuously tapering anchor crest, which runs along the central element, optionally the central strips, or a first side face of the first side element.

The sides of the central element and of the second side element facing the expansion joint preferably comprise an expansion groove and an expansion comb that is displaceable and preferably held without play in the expansion groove. The dimensions of the expansion comb and expansion groove are particularly preferably matched to one another in such a way that the expansion joint remains optically closed on the one hand, even with maximum expansion and shrinkage of the panel-shaped wood system, and on the other hand no blockage occurs. The dilatation groove preferably has a geometry that is complementary to the dilation comb, so that the dilatation comb can be displaced in the dilatation groove with practically no play and nevertheless seals it largely tightly.

The panel-shaped wood system and all wood-based elements thereof are particularly preferably designed to be adhesive-free. Thus, when the panel-shaped wood system has reached its useful life, it can be used for other purposes or simply burned, which makes ecological sense. In addition, no non-volatile solvents, which are often contained in adhesives, are released from the panel-shaped wood system during its service life.

In a particularly preferred embodiment, the first side element and/or the second side element and/or the middle element, optionally the middle strips, and/or the cross brace are made from a piece of solid wood in such a way that the direction of wood growth runs at least approximately parallel to the longitudinal axis of the respective element. Shrinkage and expansion of wood due to changes in temperature and humidity primarily affect the directions perpendicular to the direction of wood growth. In the panel-shaped wood system according to the invention, shrinkage and expansion are thus absorbed by the expansion joint, while no disturbing material expansions occur in the longitudinal direction of the wood elements.

In a further preferred embodiment, a retaining pin is arranged on the central element, optionally on the central strip adjacent to the first or second side element, which engages at least approximately positively in a retaining opening provided for this purpose on the first or second side element and is mounted therein. The second side element and the central element, optionally the central strips, and the first side element connected thereto are additionally stabilized and guided relative to one another by the retaining pin and the retaining opening. Even if the expansion or shrinkage exceeds the normal range, the two units remain guided against each other. The retaining pin and the retaining opening are also interchangeable.

The panel-shaped wood system is preferably designed as a door, in particular a house door, room door, furniture door, e.g. cupboard door or shaft door. Due to the high inherent stability of the panel-shaped wood system, doors can be manufactured with high stability that can withstand high loads.

1. a) Ein erstes Seitenelement, ein aus wenigstens einer Mittelleiste bestehendes Mittelelement, ein zweites Seitenelement und zumindest eine Querstrebe werden als Vollholzelemente gefertigt und mit Verbindungselementen versehen, die der formschlüssigen Verbindung, insbesondere einer Klickverbindung oder einer Ankerverbindung dienen.
2. b) Zumindest ein Aufnahmekanal oder eine Aufnahmebohrung, die der Aufnahme der zumindest einen Querstrebe dient, wird in die Mittelleiste und zumindest teilweise in das erste und das zweite Seitenelement eingefügt.
3. c) Das erste Seitenelement und das Mittelelement, gegebenenfalls die Mittelleisten, werden durch Klickverbindungen oder Ankerverbindungen miteinander verbunden, gegebenenfalls miteinander verpresst;
4. d) Die zumindest eine Querstrebe wird in den Aufnahmekanal, in die Aufnahmebohrung oder in die Aufnahmenut, eingeführt.
5. e) Das zweite Seitenelement wird gegen das Mittelelement verschoben und ein Dilatationskamm und eine Dilatationsnut, die am ersten oder zweiten Seitenelement und am Mittelelement als Verbindungselemente vorgesehen sind, werden im Bereich einer Dilatationsfuge ineinander verschoben.
6. f) Abschliessend werden das erste Seitenelement und das zweite Seitenelement mit ersten und zweiten Haltemitteln mit der zumindest einen Querstrebe verbunden.

Panel-shaped wood systems according to the invention can advantageously be produced by the method according to the invention. The procedure includes the following steps:

1. a) A first side element, a middle element consisting of at least one central strip, a second side element and at least one cross brace are manufactured as solid wood elements and provided with connecting elements that serve to form a positive connection, in particular a click connection or an anchor connection.
2. b) At least one receiving channel or one receiving bore, which serves to receive the at least one cross brace, is inserted into the center strip and at least partially into the first and the second side element.
3. c) The first side element and the middle element, possibly the middle bars, are connected by clicks or Anchor connections connected to each other, possibly pressed together;
4. d) The at least one cross brace is inserted into the receiving channel, into the receiving bore or into the receiving groove.
5. e) The second side element is pushed against the middle element and a dilatation comb and a dilatation groove, which are provided as connecting elements on the first or second side element and on the middle element, are pushed into one another in the area of a dilatation joint.
6. f) Finally, the first side element and the second side element are connected to the at least one cross brace with first and second holding means.

In a particularly preferred embodiment of the method, at least one method step is carried out by a computer-controlled machine or a robot.

At least the elements for the anchor connection and/or the click connection and/or the expansion joint are preferably worked into the first side element, the second side element and the middle element, optionally the middle strips, on a computer-controlled milling machine or a computer-controlled planing machine. The planing machine is preferably used to process the elements of the click connection.

Fig. 1a

ein erfindungsgemässes Holzsystem 1, das auf einander gegenüberliegenden Längsseiten ein erstes bzw. zweites Seitenelement 2, 3 in der Ausgestaltung länglicher Vollholzelemente aufweist, die parallel zueinander ausgerichtet sind und zwischen denen ein Mittelelement 6 mit mehreren Mittelleisten in der Ausgestaltung länglicher Vollholzelemente vorgesehen sind;

Fig. 1b

das erfindungsgemässe Holzsystem 1 von Fig. 1a in einer weiteren Ansicht;

Fig. 2a

die Oberseite des Holzsystem 1 von Fig. 1a mit dem Mittelelement 6, welches Mittelleisten 61A, ..., 61E umfasst;

Fig. 2b

das Holzsystem 1 von Fig. 2a mit einem horizontalen Schnitt entlang der Linie A-A, der durch eine Haltemittelaufnahme 36 verläuft sowie eine nicht geschnittene Querstrebe 4, die in einem Aufnahmekanal angeordnet ist;

Fig. 2c

das geschnittene Holzsystem 1 von Fig. 2b, ohne die Querstrebe 4 mit Blick auf den aufgeschnittenen Aufnahmekanal 21, 62, 31, der eine Öffnung 21 im ersten Seitenelement 2, Öffnungen 62 in den Mittelleisten 61A, ..., 61E und eine Öffnung 31 im zweiten Seitenelement 3 umfasst;

Fig. 3

das Holzsystem 1 von Fig. 2a mit einem vertikalen Schnitt entlang Linie B--B mit Blick auf die in den Aufnahmekanal 21, 62, 31 eingesetzte Querstrebe 4;

Fig. 4a

ein als Türe ausgestaltetes Holzsystem 1 in einem Türrahmen 9;

Fig. 4b

die Tür 1 von Fig. 4a mit einem horizontalen Schnitt durch das zweite Seitenelement 3 und die benachbarte Mittelleiste 61 mit Blick auf die dazwischen liegende Dilatationsfuge 7 und mit einem Schnitt durch eine weitere Mittelleiste 61 mit Blick auf die Öffnung 62 in der benachbarten Mittelleiste 61;

Fig. 5

einen Ausschnitt aus einem erfindungsgemässen plattenförmigen Holzsystem 1 mit einer geschnittenen Mittelleiste 61D;

Fig. 6

einen Ausschnitt eines weiteren erfindungsgemässen plattenförmigen Holzsystems 1 in einer teilweise geschnittenen Ansicht;

Fig. 7a

zwei durch eine Ankernutverbindung miteinander verbundene Mittelleisten 61A, 61B in einer perspektivischen Ansicht;

Fig. 7b

die Mittelleisten 61A, 61B von Fig. 7a während des Verbindungsvorgangs;

Fig. 7c

die Mittelleisten 61, 61B von Fig. 7b während des Verbindungsvorgangs in einer weiteren Ansicht;

Fig. 7d

zwei miteinander durch eine Ankerverbindung verbundene Mittelleisten 61A, 61B mit einer weiteren erfindungsgemässen Ankerverbindung;

Fig. 8a

drei Mittelleisten 61A, 61B, 61C mit Klickelementen 66 in einer Seitenansicht;

Fig. 8b

die Mittelleisten von Fig. 8a mit verbundenen Klickelementen 66;

Fig. 9

ein als Schranktüre ausgestaltetes Holzsystems 1 mit einem Handgriff 37 in der Ausgestaltung einer Griffnut;

The invention is explained in more detail below with reference to drawings. It shows:

Fig. 1a

a wood system 1 according to the invention, which has a first or second side element 2, 3 in the design of elongated solid wood elements on opposite longitudinal sides, which are aligned parallel to one another and between which a central element 6 with several central strips in the design of elongated solid wood elements is provided;

Fig. 1b

the inventive wood system 1 from Fig. 1a in another view;

Figure 2a

the top of the wood system 1 from Fig. 1a with the central element 6 comprising central ledges 61A,...,61E;

Figure 2b

the wood system 1 of Figure 2a with a horizontal section along the line AA, which runs through a holding means receptacle 36 and a non-sectioned transverse strut 4, which is arranged in a receiving channel;

Figure 2c

the cut wood system 1 from Figure 2b , without the crossbar 4, looking at the cut-away receiving channel 21, 62, 31, which comprises an opening 21 in the first side panel 2, openings 62 in the center ledges 61A, ..., 61E and an opening 31 in the second side panel 3;

3

the wood system 1 of Figure 2a with a vertical section along line B--B with a view of the crossbar 4 inserted into the receiving channel 21, 62, 31;

Figure 4a

a wooden system 1 designed as a door in a door frame 9;

Figure 4b

the door 1 of Figure 4a with a horizontal section through the second side element 3 and the adjacent center bar 61 with a view of the expansion joint 7 lying in between and with a section through a further center bar 61 with a view of the opening 62 in the adjacent center bar 61;

figure 5

a section of a panel-shaped wood system 1 according to the invention with a cut central strip 61D;

6

a detail of another inventive panel-shaped wood system 1 in a partially sectioned view;

Figure 7a

two central strips 61A, 61B connected to one another by an anchor slot connection in a perspective view;

Figure 7b

the center ridges 61A, 61B of Figure 7a during the connection process;

Figure 7c

the center ridges 61, 61B of Figure 7b during the connection process in another view;

Figure 7d

two central strips 61A, 61B connected to one another by an anchor connection with a further anchor connection according to the invention;

Figure 8a

three center bars 61A, 61B, 61C with click elements 66 in a side view;

Figure 8b

the center ridges of Figure 8a with connected click elements 66;

9

a wooden system 1 designed as a cabinet door with a handle 37 in the form of a handle groove;

Fig. 1a shows a wood system 1 according to the invention. The panel-shaped wood system 1 is delimited on one side by a first side element 2 and on the opposite side by a second side element 3 . A multi-part middle element 6 is arranged between the first side element 2 and the second side element 3 . An expansion joint 7 is provided between the second side element 3 and the central element 6 . The first side element 2 has insertion points for fittings 23 on the side facing away from the central element 6 . Fittings and/or hinges can be inserted into the insertion points for fittings 23 and fastened therein. The first page element 2 has on the dated Central element 6 facing away from holding means receptacles 24 for receiving holding means.

Fig. 1b shows the panel-shaped wood system 1 of Fig. 1a in another view. The second side element 3 has analogously to the first side element 2 holding means receptacles 36 for receiving holding means. Subject to the expansion joint 7 , the wood system 1 preferably has a flat front on both sides. The side elements 2, 3 and the middle element 6 are therefore preferably cuboid. If this is desired, the panel-shaped wood system 1 can also have a relief with relief elements which can be selected by the user on at least one side and which are only provided within one of the elements 2, 3 or 6 or run through several elements 2, 3, 6.

Figure 2a shows the upper side of the wood system 1 according to the invention Fig. 1a . The panel-shaped wood system 1 is delimited on one side by a first side element 2 and on the opposite side by a second side element 3 . Arranged adjacent to the first side element 2 is a central element 6 which comprises a plurality of central strips 61A, 61B, 61C . . . aligned parallel to one another. The center strip 61A and the first side element 2 as well as the center strips 61A, 61B, 61C, .

The armature comb 68 has at least approximately a T-profile, which can be pushed into a corresponding T-profile-shaped recess in the armature slot 68 . Choosing a T-profile instead of a V-profile, for example, prevents the anchor crest 68 from exerting lateral pressure, which could cause deformation of the wooden elements 2, 61A, 61B, ... at the ends.

An expansion joint 7 is provided between the second side element 3 and the central strip 61E. A dilation ridge 32 on the second side member 3 engages in a dilation groove 63 on the center ledge 61E. The second side element 3 has on the side facing away from the central element 6 at least one holding means receptacle 36 for inclusion of a holding means. The holding means receptacle 36 is preferably a bore or a threaded bore.

Figure 2b shows the wood system 1 from Figure 2a with a section through the holding means receptacle 36 along line A--A and an uncut cross brace 4. The cross brace 4 is connected by holding means 5 which are inserted into the holding means receptacles 24, 36 on a first side to the first side element 2 and on a second Page connected to the second side element 3. The holding means 5 are guided in the holding means receptacle 36 and are covered by wooden covers 8 (see FIG figure 5 ).

Figure 2c shows the sectioned timber system 1 from Figure 2b after removal of the cross strut 4. The first side element 2 has inside a receiving bore 21 that is not continuous for receiving the cross strut 4, which forms part of the receiving channel 21, 62, 31 and which is only open towards the side facing the central strip 61A. The center strips 61A, 61B, 61C . The second side element 3 has a non-continuous receiving bore 31 for receiving the cross brace 4, which forms a final part of the receiving channel 21, 62, 31.

3 shows a vertical section approximately halfway through the timber system 1 along line B--B of Figure 2a , with the out Figures 2a, 2b and 2c known elements. A retaining pin 64 is arranged on the central element 61E, which preferably engages in a form-fitting manner in a corresponding retaining opening 33 on the second side element 3 . The retaining pin 64 guides the second side element 3 and the central element 6 with the central strips 61A, 61B, 61C, . In contrast to the side element 2 and the central strips 61A, 61B, ..., which are pushed against one another with great force and firmly connected to one another, the second side element 3 is axially fixed by the retaining pin 64 engaging in the retaining opening 33.

The cross section of the receiving channel 21, 62, 31 corresponds approximately to the cross section of the cross brace 4. It is shown, however, that there is some space or play above and below the cross brace 4, which expansion of the wooden elements 2, 61A, 61B, ... along its longitudinal axis. The wood can therefore work lengthwise. The cross brace 4 is preferably held without play parallel to the thickness of the door or perpendicular to the door 1, so that the front side and the rear side of the wooden elements 2, 61A, 61B, . . . always lie in one plane and preferably form a plane on both sides. If instead a relief is formed on the front and back, for example, this should not be changed perpendicularly to door 1.

Figure 4a shows a wood system 1 according to the invention designed as an inner door or outer door with the Fig. 1a known elements 2, 3, 6, 7 installed in a door frame 9.

Figure 4b shows the door 1 of Figure 4a with a horizontal section through the second side element 3 and the adjacent central strip 61 with a view of the intermediate expansion joint 7 with the expansion comb 32 provided on the second side element 3, which protrudes into the expansion joint 63 provided on the adjacent central strip 61. Also shown is a section through another center strip 61 with a view of the opening 62 in the adjacent center strip 61, which forms part of the receiving channel 21, 62, 31 (the partial opening or partial channel 62 is shown), which extends completely into the door 1 integrated and is not accessible from the front and rear of the wood system 1 or the door leaf 1. The cross brace 4 inserted into the receiving channel 21, 62, 31 is therefore fully integrated into the wood system 1 and is neither aesthetically nor functionally disturbing. The cross brace 4 is not visible from the outside and is also not arranged in the periphery of the wood system 1, which is why recesses, folds and grooves can be provided on the periphery of the wood system 1 or the door leaf 1 and fittings and seals can be used.

figure 5 shows a section of a panel-shaped wood system 1 according to the invention with a center strip 61D cut along line BB. The panel-shaped wood system 1 is delimited on one side by a first side element 2. Adjacent to the first side panel 2 is a center panel 6 comprising a plurality of center ledges 61A, 61B, 61C.... The center bars 61A, 61B, 61C ... are firmly connected to one another by anchor connections. The first side element 2 and the center strip 61A arranged next to it are also firmly connected to one another by means of an anchor connection. Alternatively and also according to the invention, the center strips 61A, 61B, 61C ... and the first side element 2 can also be connected by detachable click connections. At least one transverse strut 4 is mounted and guided in a receiving channel 23, 62, 31, which runs through all center strips 61A, 61B, 61C... and at least partially through the first side element 2 and the second side element 3. The cross brace 4 is firmly connected to the first side element 2 and the second side element 3 by holding means 5 . The holding means 5 are preferably covered by wooden coverings 8 in order to create a visually continuous and uniform impression. An expansion joint 7 is provided between the second side element 3 and the middle element 6 or the middle strip 61E adjoining the second side element 3 . Like this in Figure 2a is shown, the dilation gap 7 is delimited by a dilation groove 63 provided on the central strip 61E and a dilation comb 32 provided on the second side element 3 . The expansion comb 32 preferably engages in the expansion groove 63 without play and preferably closes off the expansion joint 7 in an airtight manner. When the material expands, the expansion comb 32 is displaced within the channel 63, as a result of which stresses in the wooden elements 2, 3, 6 are avoided.

FIG. 6 shows a detail of another panel-shaped wood system 1 according to the invention in a partially sectioned view. A first side element 2 and three center strips 61A, 61B, 61C are analogous to the embodiment in FIG 4 firmly connected by anchor connections. A retaining pin 64 is provided on the central strip 61C, which is arranged adjacent to the second side element 3 (not shown here). The one preferably connected in one piece to the center strip 61C Holding pin 64 preferably protrudes into the expansion joint 7 . The retaining pin 64 engages at least approximately in a form-fitting manner in a correspondingly shaped retaining opening 33 in the second side element 3, as a result of which the central strip 61C and the second side element 3 are connected to one another in an axially displaceable manner and only lateral movement towards the expansion joint 7 is possible.

Figure 7a Figure 12 shows two center ledges 61A, 61B connected by an anchor connection. The center strips 61A, 61B each have an anchor groove 67 and a corresponding anchor crest 68 along one side. The anchor groove 67 and the anchor comb 68 preferably taper along the central strips 61A, 61B, so that they can be slid into one another more easily and the desired connection quality is nevertheless achieved. This means that the side element 2 and the central strips 61A, 61B, .

Figure 7b shows the center strips 61A, 61B of Fig. 6a during the connection process. The anchor comb 68 of the center strip 61A is inserted from the side into the anchor groove 67 of the center strip 61B, with the force required for insertion only increasing sharply towards the end of the connection process due to the continuously tapering shape.

Figure 7c shows central strips 61A, 61B from FIG. 6b in a further view.

Figure 7d shows two central strips 61A, 61B connected by an anchor connection with a further anchor connection according to the invention.

Figure 8a shows three center strips 61A, 61B, 61C in a side sectional view. The middle strips 61A, 61B, 61C have click elements 66 as connecting elements. Alternatively, the tie slot and tie comb can be used as connecting elements with the same function.

Figure 8b shows the three center bars 61A, 61B, 61C of FIG Figure 8a in the connected state. The click elements 66 were with connected to corresponding elements on the adjacent center bar.

9 1 shows a wood system 1 according to the invention designed as a cupboard door with the elements known from the preceding figures. On the side facing away from the central strip 61J, the second side element 3 has a handle 37 in the form of a handle groove, with which the wood system can be easily gripped and moved.

Reference List

1

wood system

2

first page element

21

Mounting bore as part of the mounting channel 21, 62, 31

22

Receiving groove as part of the receiving channel 22, 65, 34

221

groove protrusion

23

Application points for fittings

24

holding device holder

3

second page element

31

Mounting bore as part of the mounting channel 21, 62, 31

32

dilation comb

33

Holding opening, preferably holding slot

36

holding device holder

37

Handle, preferably handle groove

4

cross brace

5

holding means

6

center element

61A, 61B, 61C...

center bar

62

Mounting bore as part of the mounting channel 21, 62, 31

63

dilitation groove

64

retaining pin

66

click element

67

anchor slot

68

anchor crest

7

expansion joint

8th

wooden cover

9

door frame or block lining

Claims (13)

1. Plate-shaped wood system (1), comprising, on opposite longitudinal sides, a first and a second side element (2, 3), respectively, in the embodiment of elongated solid wood elements which are aligned parallel to one another and between which a middle element (6) with a plurality of centre strips (61A, 61B, 61C, ...) in the embodiment of elongated solid wood elements is provided and with at least one transverse strut (4) produced as a solid wood element, which is aligned at least approximately perpendicular to the two side elements (2, 3) and to the central element (6), wherein the middle strips (61A, 61B, 61C ...) and, if appropriate, the first side element (2) and/or the second side element (3) are provided with openings (21; 31; 62) which form at least one self-contained receiving channel (21, 31, 62) into which the at least one transverse strut (4) is inserted, wherein the transverse strut (4) is connected to the first side element (2) by a first retaining means (5) and to the second side element (3) by a second retaining means (5) and wherein between the middle element (6) and the second side element (2, 3) a dilatation joint (7) is arranged which serves to absorb expansions of the middle element (6) and the side elements (2, 3), characterised in that the first side element (2) and the middle element (6), optionally the middle strips (61A, 61B, 61C ...) of the middle element (6), are connected to one another by means of click connections or by means of anchor connections comprising an anchor ridge (68) and a corresponding anchor groove (67) which extend along a first side surface of the first side element (2) or of the middle element (6), optionally of the middle strips (61A, 61B, 61C, ...).
2. Plate-shaped wood system (1) according to claim 1, characterised in that the openings (21, 31) of the at least one receiving channel (21, 31, 62) in the first side element (2) and the second side element (3) are not continuous, so that the transverse strut (4) can only be inserted into the first side element (2) and the second side element (3) from sides facing each other.
3. Plate-shaped wood system (1) according to claim 1 or 2, characterised in that the at least one receiving channel (21, 31, 62) has a cross-section corresponding to the cross-section of the transverse strut (4), wherein the transverse strut (4) is held in the receiving channel (21, 31, 62) parallel to the door thickness preferably without play and parallel to the longitudinal axes of the wooden elements (2, 3, 6) preferably with play.
4. Plate-shaped wood system (1) according to one of the claims 1 - 3, characterised in that the retaining means (5), preferably wooden dowels or screws, are arranged in retaining means receptacles (36), which are realised in the first and/or second side elements (2, 3) and which are preferably closed with a wooden cover (8).
5. Plate-shaped wood system (1) according to one of the claims 1 - 4, characterised in that the retaining means receptacles (36) are realised as bores in the first and/or second side element (2, 3) and are preferably aligned axis-parallel or coaxial to the transverse strut (4).
6. Plate-shaped wood system (1) according to one of the claims 1 - 5, characterised in that the anchor ridge (68) has at least approximately a T-profile and that the anchor groove has a corresponding T-profile-shaped recess or that the anchor ridge (68) and the anchor groove (67) corresponding thereto of at least one of the anchor connections taper along the middle element (6), optionally the middle strips (61A, 61B, 61C, ...), or a first side surface of the first side element (2).
7. Plate-shaped wood system (1) according to one of the claims 1 - 6, characterised in that the sides of the middle element (6) and of the second side element (3) facing the dilation joint (7) comprise a dilation groove (63) and a dilation ridge (32) held in the dilation groove (63) displaceably and preferably without play.
8. Plate-shaped wood system (1) according to one of the claims 1 - 7, characterised in that the first side element (2) and/or the second side element (3) and/or the middle element (6) and/or the transverse strut (4) are designed without adhesive and are arranged in such a way that the wood growth direction runs along their longitudinal axis.
9. Plate-shaped wood system (1) according to one of the claims 1 - 8, characterised in that a retaining pin (64) is arranged on the middle element (6), optionally on a middle strip (61A, 61B, 61C ...) of the middle element (6), which retaining pin (64) engages at least approximately positively in a corresponding retaining opening (33) in the second side element (3).
10. Plate-shaped wood system (1) according to one of the claims 1 - 9, characterised in that the wood system (1) is designed as a door, in particular as a house door, room door or furniture door.
11. Method of manufacturing and assembling a plate-shaped wood system (1) according to one of the claims 1 - 10, comprising the following steps

    a) a first side element (2), a middle element (6) consisting of at least one middle strip (61A, 61B, 61C, ...), a second side element (3) and at least one transverse strut (4) are manufactured as solid wood elements and provided with connecting elements which serve for the positive connection, in particular a click connection or an anchor connection;

    b) at least one receiving channel, a receiving bore (21, 31, 62), which serves to receive the at least one transverse strut (4) is inserted into the middle strip (61A, 61B, 61C, ...) and at least partially into the first and the second side element (2, 3);

    c) the first side element (2) and the middle element (6), if applicable the middle strips (61A, 61B, 61C, ...) are connected to each other by click connections or anchor connections, optionally pressed together;

    d) the at least one transverse strut (4) is inserted into the receiving channel, the receiving bore (21, 31, 62) or receiving groove (22, 34, 65);

    e) the second side element (3) is displaced against the middle element (6) and a dilation ridge (32) and a dilation groove (63), which are preferably provided on the second side element (3) and on the middle element (6) as connecting elements, are displaced into one another in the region of a dilation joint (7); and

    f) the first side element (2) and the second side element (3) are connected to the at least one transverse strut (4) by holding means (5).
12. Method according to claim 11, characterised in that at least one process step is carried out by a computer-controlled machine or a robot.
13. Method according to claim 11 or 12, characterised in that at least the connecting elements for the anchor connection and/or for the click connection and/or for the positive connection in the region of the dilation joint (7) are worked into the first side element (2), the second side element and the middle element (6), optionally the middle strips (61A, 61B, 61C ...), on a computer-controlled milling machine or a four-sided automatic planing machine.

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