EP2597218B1 - Wooden multilayer panel with lamella layers - Google Patents

Description

The present invention relates to a multilayer solid wood structural element having the features of claim 1.

Components made of multi-ply wood are known. So shows and describes the DE 10 2007 050 098 B3 an object made up of at least three cross-linked layers of solid wood. The device to be created there has two longitudinal layers, between which there is a transverse position. The transverse layer has mutually spaced transverse planks, between which are again longitudinal planks, which in turn are connected to the intermediate boards of the two longitudinal layers. The individual layers of the multi-layer component are glued together. This article is intended to avoid the disadvantages of glulam and wooden board.

A disadvantage of such a device is e.g. the climatic and biologically harmful property that the diffusion of moisture is almost impossible or at least significantly worsened by the surface gluing of the individual layers. Thus, no contemporary multi-layer component for housing is created with such a wall.

A solid wood component with similar disadvantageous properties is in the DE 196 04 433 A1 described. Again, several layers of wood layers are stacked on top of each other and glued together on adjacent flat sides.

In the EP 1 715 114 A2 is shown and described a solid wood component in which several boards are stacked with their broadsides on each other. The broad sides have grooves and ridges, which correspond with each other. Around To provide sufficient stability to the resulting solid wood component, several holes are introduced in the stack boards, in which hardwood rods are provided for stiffening the pile of boards. With the help of a lowest and a top force initiating board, which are glued to the hardwood rods, there is a further stiffening.

In the DE 199 19 991 A1 is a wall element for buildings shown and described, each consisting of several basic bodies, which in turn have a C, U or H-shaped cross-section. The open sides of the body can absorb insulation materials. The basic bodies are made of glued wooden slats and can be stackable. If necessary, they have grooves and springs for their connection.

In the DE 835 646 B Embodiments of components are shown in which one or more layers of grooved boards are assembled into multilayer components. The grooves produced are intended to form, among other channels for stiffening or the like.

Finally, in the FR 710 286 A a board shown and described, in which both flat sides mutually offset grooves are incorporated.

In the GB 822 369 A is a multilayer package of slotted Balsaholzelementen described in which the slotted Balsaholzelemente are glued to each other and at an angle to each other. In the cavities formed by the slots insulating materials can be stored.

Furthermore, in the AT 509 157 A1 a double-walled wooden construction element is shown and described in which a filling material is arranged between the outer and inner timber construction elements. The filling material facing surfaces of the timber components have slots, which may also be filled with filler.

From the DE 42 01 358 A1 In addition, a sauna cabin is known, whose walls and / or ceilings consist of elements that have changing layer surfaces. In part, the elements of wood, but also barrier layers and air chamber layers are anticipated. In this case, the air chamber layers can be formed by recesses in the wood layer.

The present invention is intended to obviate the drawbacks of the prior art and to provide a solid wood structural element for a solid wood wall which is both environmentally sound and environmentally sound, which is lighter in weight and which has a much better thermal conductivity due to many air inclusions than in the prior art. wherein the solid wood component is simple and inexpensive to produce. This object is achieved by a solid wood structural element for a solid wood wall, which has the features of claim 1 having. Advantageous embodiments can be taken from the dependent claims.

The advantages of a solid wood wall according to the invention lie in the good static property, in the relatively low weight, in the good thermal and climatic properties and in the pleasant biological behavior and last but not least in the simple and inexpensive manufacturability.

Advantageously, a multilayer solid wood component with at least three crosswise interconnected layers, if the individual layers each consist of several slats, and if the slats have at least one of the layers on their flat side surfaces slots and if the individual layers are glued together.

It is particularly advantageous if the lamellae have longitudinal slots on their opposite, flat-sided surfaces, such that a meandering cross section results at the front side and when the lamellae of all layers have slots.

Conveniently, a multi-layer solid wood component is particularly when at two spaced layers, the lamellae glued together at their longitudinal edges and the lamellae of the intermediate layer are not glued.

If the slats glued together at their longitudinal edges are perpendicular, they represent advantageously the static determining elements of a wall.

An advantageous multi-layer solid wood component is also formed when the individual layers are connected to each other in the designated non-slotted areas of their slats by nails, staples, screws or the like.

A multi-layer solid wood structural element is particularly advantageous if it consists of an odd number of layers.

Inexpensive, a multilayer solid wood component can be produced if the lamellae can be produced from so-called standard sideboards.

Moreover, it is advantageous if the slats in almost any length can be produced by known wedge galvanizing.

A multilayer solid wood component is advantageous if the wall-forming layers are enclosed by a diffusion-open membrane.

With the help of an embodiment, the invention will be explained in more detail with reference to the drawings. In this case, the term slat is used for a single board.

• Figur 1 eine geschlitzte Einzel-Lamelle im Querschnitt;
• Figur 2 ein Schichtenpaket von mehreren geschlitzten Lamellen;
• Figur 3 ein Schichtenpaket von sieben geschlitzten Lamellen in Schnitt-Darstellung und
• Figur 4 ein Nagelschema für eine Massivholz-Wand.

It shows

• FIG. 1 a slotted single lamella in cross section;
• FIG. 2 a layer package of several slotted lamellae;
• FIG. 3 a layered package of seven slotted slats in sectional view and
• FIG. 4 a nail scheme for a solid wood wall.

An in FIG. 1 Slat 1 shown schematically is shown in cross section. The longitudinal extent of this lamella 1 extends in a direction perpendicular to the plane of the drawing. The surfaces of the lamella 1 running perpendicular to the plane of the drawing accordingly represent their flat-sided surfaces 2 and 3. In the flat-sided surfaces 2 and 3 there are a number of longitudinal slots 4 and 5, for example are introduced by means of saws in the surfaces 2 and 3. Due to the lateral offset of the saw cuts, which lead to the longitudinal slots 4 and 5, arises in cross-section of the blade 1, a meandering profile. With appropriate machine equipment, at least the cuts are made on longitudinal edges 6 and 7 and the longitudinal slots 4 and 5 simultaneously in one operation. The length of the lamella 1 can be produced in almost any extent, with the known methods such as galvanizing and gluing preferably being used. These known production method of longer boards or slats therefore need not be explained in more detail here. Cost effective, the slats 1 are made of standard sideboards. The accumulating chips can preferably be further used thermally, so that an optimal use of the wood is given. In the areas of the longitudinal edges 6 and 7 of the slat 1 remain wider unslotted end webs 8 and 9 are, which may be required for the subsequent connection of the individual slats 1 with each other and to several layers, as below to the Figures 2 and 3 will be explained.

In FIG. 2 is a layer package 10 of several slotted slats 1 shown schematically. In the recognizable meandering slats 1 runs - as already to FIG. 1 described - the longitudinal extension of the slats 1 again perpendicular to the plane. They thus represent the "standing" elements of the multilayer solid wood component W according to the invention. The two standing slats 1 are spaced apart and take between them a horizontally extending slat 1, which is executed in the same way as the stationary slats 1. Bei the horizontally extending lamella 1 extends the transverse extent of the lamella 1 perpendicular to the plane of the drawing. The layer pact 10 is thus formed by mutually similar lamellae 1, which are arranged crosswise to each other and form a plurality of layers 11 of lamellae 1. The connection of the individual layers 11 of lamellae 1 according to the invention is glue-free, namely, for example, by nailing. In the FIG. 2 2 illustrates that the two right-hand layers 11 of lamellae 1 are connected to nails 12. The third layer 11 is connected by longer nails 13 with the two other layers 11. It is understood that other types of connections, such as screws are suitable to connect the various layers 11 without glue together. In the invention, the use of glue or adhesives for connecting the different layers 11 is explicitly omitted, so that between the individual layers 11 no glue layer is present, which would worsen the building biology and climatic properties of the multi-layer solid wood component W. To create a large-scale wall of the multi-layer solid wood component W according to the invention, this is formed from a plurality of fins 1, which are joined together in a crosswise manner. For this purpose, the standing slats 1 are glued together at the longitudinal edges 6 and 7 of their end webs 8 and 9. This gluing has no negative effect on the described biobiological and climatic properties, because there are no glue layers in the Durchdringsrichtung the wall from outside to inside and vice versa, but only insignificant for these properties Glue joint 14 at the longitudinal edges 6 and 7, in addition to in a direction parallel to the direction of penetration.

In FIG. 3 is a seven-layer layer package 15 shown, that is, that seven layers 11 of similar slats 1 arranged crosswise to each other and are connected to each other without glue. Such a layer package 15 represents a typical embodiment for the practical construction of a building wall according to the multilayer solid wood component W according to the invention. The number of layers 11 depends on the requirements of statics and is determined inter alia by the dimensioning of the standing slats 1. The number of vertical slats 1 in a layer 11 of course depends on the desired width of Wall W and from the width of the individual slats 1 from. The number of lying slats 1 in turn depends on the desired height of the wall W and the width of the individual slats 1, so that the total number of individual slats 1 per layer 11 depends on the areal size of the wall W and the statics the number of required Positions 11 determined. Due to static requirements, the standing slats can also be made of solid wood of unslotted cross-section.

In a manner not shown, the finished building wall W can be enclosed by a diffusion-open membrane. As a result of the slotted lamellae 1, a quiescent layer of air is produced in the layer package 10 or 15, which is very advantageous for the building constructed from the multilayer solid wood construction elements W according to the invention.

If it should be necessary, further slats for the external and / or the inner wall view can be obstructed, these slats (not shown) can also be slotted unslottled or only one side. Furthermore, building technically conventional wall layers such as plaster base plates / plaster or the like can be applied.

In FIG. 4 is strongly schematized illustrated a so-called nail scheme. A plan view of a multi-layered solid wood component W, of which only four fins 1 are shown here, shows the crosswise arrangement of the four fins 1 in two mutually perpendicular layers 11. In the vertical - ie standing - extending fins 1 are in this diagram no slots shown, so as not to jeopardize the clarity. They are glued together at their longitudinal edges 6 and 7, so that a glue joint 14 is formed, which extends between the longitudinal edges 6 and 7 and extends perpendicular to the plane in the thickness of the slats 1. Transverse to the course of the slats shown standing 1, two further fins 1 are shown, which are located in a plane which runs parallel to the plane of the drawing. They are shown as being under the standing slats 1. They are therefore shown as visible only in those areas in which they project beyond the standing slats 1. The slots 4 are visible, however, the slots 5 are invisible, since they are located on the underside of the slats 1. As already too FIG. 2 has been described, the individual layers 11 are interconnected by nailing, staples or the like. Here, the nails 12 can be seen, which extend perpendicular to the plane and connect these two layers 11 shown together. The nails are made in the end bars 8 and 9, so they do not penetrate the weakened by the slots 4 and 5 areas of the slats 1, but are in solid wood. In the FIG. 2 additional visible nails 13 can not be shown here, as they are used for the nailing of three layers and therefore have a greater length, but here only two layers 11 are shown deliberately.

LIST OF REFERENCE NUMBERS

1

lamella

2

Flat-sided surface

3

Flat-sided surface

4

longitudinal slot

5

longitudinal slot

6

longitudinal edge

7

longitudinal edge

8th

end web

9

end web

10

Three-layer layer package

11

Layers of slats 1

12

nails

13

nails

14

glue joint

15

Seven-layer layer package

W

Multilayer solid wood construction element (wall)

Claims (7)

1. A multilayer component in solid wood (W) with at least three layers assembled together in a cross (11), each one consisting of several strips (1), where the strips (1) are facing one another and are characterised by plane surfaces (2, 3) and longitudinal slots (4, 5), so that there is a winding cross section on the front part, given that all the layers (11) are inextricably bound without glue.
2. A multilayer component in solid wood (W) according to claim 1, characterised by two spaced layers (11), strips (1) which are glued together along their longitudinal edges (6, 7) and slats (1) which are detached from the middle layer (11).
3. A multilayer component in solid wood (W) according to claim 2, characterised in that along their longitudinal edges (6, 7), the strips are glued (1) and positioned vertically given that they are the static elements which form the partition (W).
4. A multilayer component in solid wood (W) according to claim 1, characterised in that the different layers (11) are ribbed (8, 9) along their extremities, and unslit parts are fitted together at the slats (1) by nails, hooks, screws, or similar elements.
5. A multilayer component in solid wood (W) according to claim 1, characterised in that it consists of an odd number of layers (11).
6. A multilayer component in solid wood (W) according to claim 1, characterised in that the slats (1) can be joined at whatever length.
7. A multilayer component in solid wood (W) according to claim 1, characterised in that the layers forming the partition are surrounded by a vapour permeable membrane.

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