DE9306273U1 - Parquet element - Google Patents

Description

Jakob Niedergünzl 20.04.93

Nine Devils 2

8229 Kirchanschöring/Obb.

Parquet element

The invention relates to a prefabricated panel-shaped parquet element with several parallel longitudinal rows of parquet slats or strips arranged one behind the other.

In addition to strip parquet made of individual strips with a length of 250 to 1000 mm, a width of 45 to 80 mm and a thickness of 10 to 23 mm, today mainly panel-shaped, single-layer parquet elements are used, which are made up of parquet slats or strips in a wide variety of laying patterns, such as cube patterns, herringbone patterns or stretcher bond patterns (ship's deck pattern). The parquet slats are held together, for example, by a flat material that is attached to the underside of the slats or strips, or by wire or by an adhesive in the joints between the abutting side edges of the slats or strips. If no flat material or only a flexible thin flat material, for example textile material such as nets, fabrics, fleece, foil or paper is used to hold it together, the parquet element is used as a single-layer parquet element. However, a solid support layer can also be used to hold the slats or bars together, for example plywood, wooden strips, chipboard, bituminized wood fiber insulation boards, cork boards or tar paper, to which the slats or bars are glued.

The best-known prefabricated parquet element is the mosaic parquet made of panels of about 48 x 48 or 32 x 64 cm with a mosaic-like composition of glued-on slats that are usually 12 to 16 cm long and up to 25 mm wide. The mosaic parquet can be produced inexpensively from low-quality raw wood.

However, interest in mosaic parquet has declined significantly in recent years because it does not correspond to today's architectural design trend for timeless and straight lines, for example the classic stretcher bond or herringbone bond laying pattern.

This design trend is reflected in panel-shaped parquet elements, such as the so-called "smooth-edge strip parquet" or "lam parquet", which consist of larger, thicker parquet strips with a length of up to 50 cm, a width of up to 7 cm and a thickness of up to 10 mm compared to parquet slats. If the well-known prefabricated parquet elements have a stretcher bond laying pattern in the same or irregular bond, the ends of the elements are comb-shaped on the front sides. However, laying a parquet made of such elements is not without problems, since the comb-shaped ends of neighboring elements have to be "threaded", i.e. laboriously inserted into one another, which is very laborious. In order to facilitate this "threading", a parquet element of the type mentioned above has already been proposed, in which the lower longitudinal edges of the slats are chamfered or rounded (DE 41 04 762 C 1). However, chamfering or rounding the slat edges involves a not insignificant additional manufacturing effort.

To prevent the formation of gaps, parquet slats or strips are dried to a moisture content of around 9% and the slats or strips for prefabricated parquet to a moisture content of around 8%. The wood swells as it absorbs moisture, which closes the gaps. The wood swells until it has reached a moisture content of around 25%. If the moisture content of the wood increases by 1%, a 100 mm wide wooden surface, e.g. made of oak, will expand by 0.26% on average and a beech surface by as much as 0.50%. If the moisture content of the wood increases from 8% to 18%, as is often the case, a 100 mm wide wooden surface made of oak will expand by 2.6 mm and a beech surface by 5.0 mm if the wood expands unhindered.

The length, however, changes only insignificantly. The swelling of the wood has a particularly noticeable effect on a larger room area. If the parquet slats or strips are all in the same direction, as in a runner or slanted floor bond, a 5 m wide wooden floor area will widen if the moisture content increases from 8 to 18%, from 5000 mm by 130 mm to 5130 mm for oak and from 5000 mm by 250 mm to 5250 mm for beech. This widening is limited in multi-layer glued prefinished parquet, but not excluded. This is why even prefinished parquet can be subject to major damage due to slats coming loose, the floor warping or lifting, or the subfloor being destroyed.

Furthermore, low-quality raw wood should be used to produce a universally applicable parquet element and production should be possible using known and existing machines and devices.

The object of the invention is therefore to provide a parquet element that is easy to manufacture and easy to lay, even from low-quality raw wood, which can be laid to form a highly durable parquet floor that meets sophisticated architectural design requirements. This is achieved with the parquet element according to claim 1. Advantageous embodiments of the invention are reproduced in the subclaims.

The parquet element according to the invention has several parallel straight rows arranged next to one another, with each row consisting of slats arranged one behind the other. Preferably, each row has at least 3, but generally 4 or more slats arranged one behind the other in length. The number of rows, i.e. the slats arranged next to one another, is, for example, 3 to 20, depending on the desired panel width; however, preferably 4 to 8.

The parquet element according to the invention has a handy size. That is, it has a width of, for example, 10 to 40 cm, in particular about 16 cm and a length of, for example, 50 to 150 cm. The slats have a width of, for example, 2 to 7 cm, a length of, for example, 10 to 50 cm and a thickness of, for example, 5 to 15 mm. By arranging the slats in rows next to one another and their course in the longitudinal direction of the parquet element, when the parquet element according to the invention is laid, a parquet is created with a laying pattern that corresponds in appearance to a runner or ship's bond, herringbone bond or similar raised laying pattern with straight lines. The front sides of the parquet element according to the invention are straight or designed with steps corresponding to the width of one or more adjacent slats.

The straight front sides can be at right angles or diagonally to the long sides of the parquet element.

With right-angled ends, right-angled parquet elements are formed, and with slanted ends, parallelogram, trapezoid or triangular parquet elements are formed. Due to the straight or stepped ends, the parquet elements according to the invention do not require the laborious "threading" that is required with the known parquet elements with comb-shaped ends.

Right-angled parquet elements are obtained when the joints of adjacent slats are aligned, i.e. the slats are arranged in transverse rows at the same time so that their joints form transverse lines. However, it is also possible to produce a strip with the width of the parquet element, consisting of slats arranged parallel to one another, the joints of which are aligned with one another, i.e. forming transverse lines, and then cut the strip at right angles or at an angle of ζ. β 45° to form parquet elements in the shape of a parallelogram, trapezoid or triangle. Such a strip can also be made of slats arranged parallel and offset.

The slats that make up the parquet element according to the invention or that are used to make such a strip normally all have the same dimensions.

If the front sides of the parquet element are designed in steps, this is conveniently achieved by a corresponding step-like offset of the slats.

The parquet element according to the invention preferably has a strip of elastic material on at least one longitudinal edge. Instead of or in addition to the strip on the longitudinal edge, such a strip can be provided between two rows of slats of the parquet element. Furthermore, such a strip can be provided on at least one side of the parquet element.

As mentioned above, parquet wood swells when it absorbs moisture, causing it to expand. If, however, the parquet element according to the invention has such a strip of elastic material, it is compressed and the swelling pressure is not transferred from one parquet element to the other. The lateral pressure is thus interrupted and thus absorbed, meaning that neither the parquet elements or slats are squashed or warped by lateral pressure. At the same time, this prevents the adhesive layer and the subfloor from being overloaded, so that the dreaded loosening of the slats, warping or lifting of the floor is avoided, as well as the destruction of the subfloor. If the air in the room is too dry, the parquet wood releases moisture again and tends to shrink. The strip of elastic material under lateral pressure can then expand again, so that the parquet surface always remains closed, i.e. no gaps are created.

The strip of elastic material is preferably made of cork, for example pressed cork, and has a width of approximately 3 to 8 mm and a thickness corresponding to the thickness of the parquet element.

The strip has a corresponding width of e.g. 8 to 10 mm. The width of the strip must in any case be such that it can accommodate the swelling of the parquet wood and the resulting widening.

If the parquet elements according to the invention have straight front sides, a strip of elastic material can also be arranged on one or both front sides. The strip of elastic material on one or both front sides of the parquet element offers particular advantages when the parquet floor is used as a sprung floor, for example in a gymnasium. The strips of elastic material make the parquet surface particularly supple, i.e. it bends pleasantly under pressure with shock absorption and springs back to its original starting position when the pressure is removed. This means that a floor made of parquet elements according to the invention, which are provided with strips of elastic material on the long and front sides, not only meets the requirements for a sports facility floor, but also behaves much more pleasantly under shock loads than all previously known sprung floor coverings made of wood. Furthermore, the breaking and splintering of the side edges can be almost completely prevented, as the excessive compressive and tensile stresses on the side edges of the parquet wood that occur during bending are absorbed and cushioned by the strips of elastic material. The strips of elastic material can also be inserted on the long sides and/or front sides of the parquet elements when the parquet floor is laid.

The parquet elements are normally made from slats of one type of wood. However, parquet slats of several types of wood or colors can also be arranged within a single parquet element to create a patterned look. When laying, parquet elements of one shape and one wood color, or different shapes and different wood colors can be used.

The parquet elements according to the invention can be manufactured both by hand or automatically by machine. The expansion strips can be colored in any color. Instead of pressed cork, another elastic material can be used that can be sanded, sealed or otherwise surface-treated with the laid parquet floor.

The slats and the strips of elastic material can be connected by a flat elastic material, such as a net or perforated paper, or by wire or cord or by adhesive in the joints of the slats in the parquet element.

It is also possible to glue the slats and the strips made of elastic material onto a carrier board, e.g. made of cork, plywood, a chipboard, a wood fiber insulation board, a cork-rubber granulate board or similar board. The surface of the parquet element according to the invention is preferably sanded, sealed or otherwise surface-treated.

The invention therefore provides a prefabricated parquet element in which the dreaded "loosening" of the slats or bars from the floor, throwing or lifting of the floor and thus also the destruction of the subfloor is eliminated. At the same time, the parquet element according to the invention can be manufactured simply and inexpensively with low wood consumption and can be laid easily, quickly and without any problems with a low installation height on all subfloors for glued parquet, plastic flooring, carpets and tiles in living rooms, commercial spaces, event rooms, schools, sports halls and the like without excessive demands on the quality and moisture of the subfloor or the room humidity, using pollutant-free water-soluble adhesives and sealing varnishes.

The invention is explained in more detail below with reference to the drawing. In it:

Fig. 1 is a plan view of a parquet element according to an embodiment of the invention;

Fig. 2, 2a and 2b a top view and a cross section respectively

a lamella of the parquet element according to Fig. 1 and Fig. 4 to 11;

Fig 3, 3a and 3b a top view, side view and a

Cross-section of the strip of elastic material of the parquet element according to Fig. 1; as Fig. 4 to 11;

Fig. 4, 5 a plan view of two further embodiments of rectangular parquet elements according to the invention;

Fig. 6 and 7 a plan view of parquet elements with stepped ends;

Fig. 8, 9, 10 and 11 a plan view of parallelogram,

trapezoidal and triangular parquet elements;

Fig. 12 to 12 a plan view of a parquet with parquet elements according to Fig.l;

Fig. 13 and 14 a plan view of a parquet with parquet elements according to Fig. 4;

Fig. 15 is a plan view of a parquet floor with parquet elements according to Fig. 5; and

Fig. 16 is a plan view of a parquet floor with parquet elements according to Fig. 8.

According to Fig. 1, the parquet element 1 has seven longitudinal rows a to g of parquet elements 2, each longitudinal row a to

g consists of four slats 2 arranged one behind the other in the longitudinal direction and aligned with one another. All slats 2 have the same dimensions. This simultaneously forms four transverse rows m to r of slats 2, so that the joints of the slats 2 form transverse lines x, y, &zgr;. The end faces 3, 4 of the parquet element 1 are straight and run at right angles to its long sides 5, 6. A strip 7 made of elastic material, e.g. cork, is provided on one long side 5. The width of the parquet element 1 can be 18 cm, for example, and its length 60 cm, for example.

According to Fig. 2, 2a and 2c, each slat 2 is rectangular, with a length L of e.g. 15 cm and a width B of e.g. 2.5 cm. The slats 2 have a rectangular cross-section (Fig. 2c); their thickness D is e.g. 1

The cork strip 7, which is rectangular in cross-section and extends over the entire length L of the parquet element 1, has a width B' of e.g. 2 to 10 mm and the same height or thickness D' as the thickness D of the slats 2 (Fig. 3, 3a, 3b).

Fig. 12 shows a laying pattern made with the parquet elements 1 according to Fig. 1. The parquet has the appearance of a high-quality plank floor. The cork strips 7 emphasize the longitudinal joints.

In the parquet element 1 according to Fig. 4, in addition to the strip 7 on the long side 5, a further strip 8 made of elastic material, for example cork, is provided on one end face 3, which has the same cross-section as the strip 7.

Fig. 13 shows a laying pattern with the parquet elements 1 according to Fig. 4, where the parquet elements 1 are laid parallel with offset joints. The longitudinal strips 7 and the transverse strips 8 at the ends of the elements 1 create a

Stretcher bond pattern. Furthermore, Fig. 14 shows a herringbone laying pattern made with the parquet elements 1 according to Fig. 4.

In the parquet element 1 according to Fig. 5, instead of a strip 7 made of elastic material on a long side 5, 6, a longitudinal strip 9 is arranged in the middle of the element 1 between the middle rows c and d of the slats 2. This makes it possible, for example, to obtain a herringbone laying pattern according to Fig. 15, in which the middle strips 9 form additional inlay strips.

The parquet element 1 according to Fig. 6 has stepped front sides 3, 4. For this purpose, the slats 2 of two adjacent rows a and b are offset to the two adjacent rows c and d and the rows e and f are in turn offset to the rows c, d. The offset of the slats 2 of rows a and b to the slats 2 of rows c and d and the offset of the slats 2 of rows c and d to the slats 2 of rows e and f is approximately 1/3 of the length of the slats 2. In the parquet element 1 according to Fig. 6, all slats 2 also have the same dimensions.

The parquet element 1 according to Fig. 7 differs from that according to Fig. 6 essentially in that instead of the strip 7 on the long side 5, a strip 9 made of elastic material is provided between the middle rows c and d, there are three rows of slats a to c and d to f lying flush next to each other and the offset is half a slat length.

The parquet element 1 according to Fig. 8 is designed as a parallelogram. This means that the front sides 3, 4 run at an angle of 45° to the long sides 5, 6. The slats 2 of all rows a to g are arranged parallel to one another so that their joints form transverse lines w to &zgr;. A strip 7 or 8 made of elastic material is attached to one long side 5 and one slanted front side 3.

The parquet element 1 according to Fig. 8 is made from an endless strand or strip consisting of seven rows a to g of slats 2 in a corresponding arrangement. This strip is sawn off at an angle of 45° in order to obtain the parquet elements 1 according to Fig. 8 without any waste. By using different colored woods, for example medium-colored oak and light maple, new laying patterns can be produced according to Fig. 16.

Fig. 9 shows a trapezoidal parquet element 1 with a strip 7 made of elastic material on a long side 5. The slats 1 are arranged in a non-offset manner as shown in Figs. 1 and 8, i.e. in longitudinal rows a to g and transverse rows m to q. The parquet element 1 according to Fig. 9 can be made from the same endless strip as the parquet element according to Fig. 8.

The parquet elements according to Fig. 10 and 11 are obtained when triangles are sawn off from the strip from which the parallelogram-shaped parquet element 1 and the trapezoidal parquet element 1 according to Fig. 8 and 9 can also be sawn off. In this case, only a small triangular piece 7' of the strip 7 made of elastic material remains at the tip of the triangle according to Fig. 11.

When laying, a corresponding trapezoidal parquet element 1 that is rotated by 180° can be connected to the parquet element 1 shown in Fig. 9. The triangular parquet element 1 rotated by 180° according to Fig. 11 can also be connected to the triangular parquet element 1 according to Fig. 10. The parquet elements 1 with the slanted end faces 3, 4 according to Figs. 8 to 11 can also be combined, for example the trapezoidal parquet element 1 according to Fig. 9 with the triangular parquet elements 1 according to Figs. 10 and 11. By using different colored woods for the parquet elements 1 with

Sloping front sides 3, 4 as shown in Fig. 8 to 11 allow the installation of artistically patterned floors in a variety of shapes.

Claims (10)

Jakob Niedergünzl 20.04.93 Neunteufel 2 Kirchanschöring/Obb claims 1. Prefabricated panel-shaped parquet element with several longitudinal rows of parquet slats arranged one behind the other, characterized in that the end faces (3, 4) of the parquet element (1) are straight or stepped in accordance with the width (B) of at least one slat (2). 2. Parquet element according to claim 1, characterized in that the straight end faces (3, 4) run at right angles to the long sides (5, 6) to form rectangular parquet elements (1). 3. Parquet element according to claim 1, characterized in that the straight end faces (3, 4) run obliquely to the long sides (5, 6) to form parallelogram, trapezoid or triangular parquet elements (1). 4. Parquet element according to claim 3, characterized in that the oblique end faces (3, 4) extend at an angle of 45° to the longitudinal sides (5, 6). 5. Parquet element according to one of the preceding claims, characterized in that it consists of or is manufactured from slats (2) of the same dimensions. 6. Parquet element according to one of the preceding claims, characterized in that the slats (2) of a longitudinal row (a to g) or several adjacent longitudinal rows (a to g) are offset from the slats (2) of the adjacent longitudinal row (a to g) or several adjacent longitudinal rows (a to g). 7. Parquet element according to claim 5 and 6, characterized in that the end faces (3, 4) of the parquet element (1) are formed in a step-like manner due to the offset arrangement of the slats (2). 8. Parquet element according to one of the preceding claims, characterized in that a strip (7 to 9) made of elastic material is provided on at least one longitudinal side (5, 6) and/or between two longitudinal rows (a to g) and/or on at least one end face (3, 4) of the parquet element (1). 9. Parquet element according to claim 8, characterized in that the strip (7 to 9) made of elastic material is colored. 10.Parquet element according to claim 8 or 9, characterized in that the strip of elastic material consists of cork.