EP2514904A2 - Window sill - Google Patents

Abstract

The window sill (1) has a plug-end section (2) with legs (2.1,2.2) attached right angles to each other. A U-,L-,T-or double-T-shaped bar (4) is extended along a side edge in U-shaped cross-section of the plug-end section. The bar is made of plastic, aluminum or aluminum alloy, and is connected to the window sill using an adhesive bond. The plug-end section is provided with a resilient seal element (5) made of polyethylene, polyurethane, ethylene propylene diene monomer or silicone, rubber, PVC or thermoplastic elastomer.

Description

The invention relates to a sill with the features of the preamble of claim 1. Such a sill has a clip-on end profile for connecting the sill to a window reveal. The end profile comprises in cross section at least a first leg, and an angle, preferably arranged at right angles to the first leg second leg. The end profile therefore preferably has a substantially L-shaped or U-shaped cross-sectional profile.

It should be noted that if the terms "window" and "reveal" are used, they will similarly refer to doors and door reveals.

State of the art

A window sill is usually a component that is industrially prefabricated to measure. The component then only has to be used on site and connected to adjacent components. Adjacent components are in particular the wall structures of the outer wall and at least one window inserted into the outer wall. The connection to the window is usually via a rear edge of the window sill, by means of which the sill can be connected to the window frame of the window. Preferably, the rear upstand of the sill is bolted to the window frame of the window. The connection to the wall structures of the outer wall is usually via a separate connectable with the windowsill end profile, in the area of Window reveal is arranged. The window reveal is the part of the outer wall which laterally delimits the opening into which the window is inserted. As a rule, the soffit runs perpendicular to the window plane. A window reveal is omitted if the window is flush with the facade inserted into the outer wall. For reasons of building physics, however, windows are regularly installed opposite the façade level, preferably in the area of the insulation level or flush with the supporting wall.

If the outer wall comprises insulating layers and / or single or multi-layer plaster structures, these are brought around the reveal to the window. Forming a single or multi-layer plaster structure the completion of the facade, the windowsill is first used and then applied the plaster. The plaster layers are brought up to the end profile of the window sill. With curing of the plaster layers then the end profile is fixed in its position. To accommodate thermally induced changes in length of the sill, the connection of the end profile with the sill is often designed so that it allows a displacement of the sill against the end profile in a direction parallel to the longitudinal extent of the sill. At the same time, however, it must be ensured that the connection of the window sill to the window reveal is tight in order to prevent moisture from penetrating via the connecting joint into the wall construction of the outer wall.

From the publication DE 32 31 600 A1 goes out an aluminum sill with side finishes, each comprising a counter to the action of an elastic sealing axially displaceable, changes in length of the sill in case of temperature fluctuations compensating cover profile. The elastic sealing device at the same time the penetration of moisture is prevented by gaps and joints between the terminal ends of the windowsill and the masonry. The cover profile has a substantially L-shaped cross section with a first leg and a second leg and a perpendicular to the first leg and parallel to second leg extending bridge on. The web is completely received by the elastic sealing device, which is inserted into a arranged at the terminal end of the sill C-shaped profile. Thus, a flexible and at the same time tight connection of the sill to the window reveal is created. However, it proves to be disadvantageous that the elastic sealing device can not ensure a permanently parallel alignment of the cover profile with the window sill surface in the case of a thermally induced change in length of the window sill. Because the elastic sealing device is not able to prevent tilting or tilting of the cover for large changes in length, which can lead to cracking between the cover and the plaster layer. In addition to the visual impairment, there is also the risk that the tightness of the connection is no longer guaranteed due to the formation of cracks.

A development of the previously described windowsill goes out of the DE 20 2008 004 201 U1 out. As a further development measure, it is provided that the receiving profile which is substantially C-shaped in cross-section has a flange-like web for receiving or supporting the end profile. The additional support or support of the end profile should counteract tilting or tilting of the end profile.

Based on the above-mentioned prior art, it is an object of the present invention to provide a sill with a clip-on end profile, which is on the one hand simple and on the other hand counteracts tilting or tilting of the end profile when the sill undergoes a change in length.

The object is achieved by a sill with the features of claim 1. Advantageous developments of the invention are specified in the subclaims.

Disclosure of the invention

The proposed window sill has an attachable end profile for connecting the sill to a window reveal. The end profile comprises in cross section at least a first leg and an angle, preferably arranged at right angles to the first leg second leg. According to the invention, the window sill for receiving the end profile has at least one web extending along one side edge and substantially U-, L-, T- or double T-shaped in cross-section, which is integrally formed with the window sill or non-positively and / or positively with the windowsill is connected. If the preferably L- or U-shaped end profile is plugged onto the web of the window sill for connection to the window sill, at least one leg of the end profile comes to rest on a leg of the U, L, T or double T-shaped web , which is aligned parallel to the window sill surface. Thus, the end profile also experiences a parallel alignment with the window sill surface, at least with respect to the leg resting against the leg. In addition, a tilting or tilting of the end profile is largely excluded in a change in length of the sill.

The one-piece design of the web with the sill leads to increased stiffness, so that a permanently parallel alignment of serving as a support leg of the web is ensured parallel to the window sill surface. This is because tilting the end profile can only be prevented if the web also permanently retains its alignment with respect to the window sill surface. This requirement is best met if the web is formed integrally with the sill.

In order to allow for a change in length of the sill a shift of the sill against the end profile, serving as a support leg of the web is shorter than the leg resting thereon of the end profile.

As an alternative to the integral formation of the web with the window sill, it is proposed that the web is non-positively and / or positively connected to the window sill. The non-positive and / or positive connection should also effectively prevent a change in the orientation of the web relative to the window sill surface.

Preferably, the non-positive and / or positive connection of the web with the sill is a clamping or adhesive connection. To realize a clamping connection can be formed on the web, which is further preferably formed in cross-section double T-shaped, a clamping tab which engages around the side edge of the sill. Preferably, the clamping plate is slightly resilient and deforms when sliding the web on the side edge of the sill, so that the clamping plate rests under pretension on the windowsill. The clamp connection has the advantage over the one-piece design that any manufacturing tolerances of the window sill or on-site construction tolerances can be compensated for on site. Alternatively or additionally, an adhesive connection can be provided. In this case, however, a subsequent non-destructive release of the web from the window sill is no longer possible - when using a permanent adhesive bond causing adhesive.

In the one-piece design of web and windowsill this has preferably been made by edges, welding and / or soldering. For example, a cross-sectionally U-shaped or L-shaped web may have been produced by edges and a cross-sectionally T- or double-T-shaped web by edges and welding or soldering. In addition, the sill and the web can first be made separately and then integrally connected by welding or soldering.

To simplify the integral formation of web and windowsill is further proposed that the web and the sill made of the same material. Of the Material is preferably a plastic or a metal, in particular aluminum or an aluminum alloy. The use of the aforementioned materials results in a low weight of the sill made therefrom, which is therefore easier to handle.

Furthermore, the sill and the bridge, in particular in the case of non-integral training, can be made of different materials. For example, combinations of the abovementioned materials can be used, for example a combination of the materials aluminum and plastic.

Advantageously, the attachable to the bridge end profile has a U-shaped cross-section. The end profile can therefore be plugged onto the web in such a way that the two parallel legs of the U-shaped cross section surround the web. The connection of the two parallel legs serving further leg of the end profile is applied to a parallel to the window sill surface aligned leg of the web. The leg of the web is - viewed in cross section - shorter than the adjoining leg of the end profile formed to allow a displacement of the sill against the end profile in a direction parallel to the longitudinal extent of the sill.

Advantageously, the window sill comprises at least one elastic sealing element which can be used as an expansion spring. The elastic sealing element prevents moisture from entering the wall construction via the gap between the end profile and the bridge of the window sill. Preferably, on both sides of the web at least one elastic sealing element is arranged, which fills the gap between web and end profile sealing. Due to the elasticity or compressibility of the sealing element or the sealing elements is still a shift of Window sill opposite the end profile in a direction parallel to the longitudinal extension of the windowsill possible.

According to a preferred embodiment of the invention, the at least one elastic sealing element is arranged on the web or on the end profile and, with the end profile attached, bears under pretension on the end profile and / or on the web. Furthermore, at least two elastic sealing elements are preferably arranged on both sides of the leg of the web substantially perpendicular to the window sill or on the inside of the two parallel legs of the end profile, which is preferably U-shaped in cross-section. When attaching the end profile on the web, the sealing elements arranged on both sides are slightly compressed, so that a clamping connection between the end profile and web is realized. The clamp connection facilitates installation of the sill, as it counteracts a release of the end profile of the web of the windowsill.

To effect the clamping connection, the elastic sealing element must be slightly compressed with attachment of the end profile. As a result, at the same time the sealing effect is improved. However, the sealing element should be further compressible with attached end profile to allow a displacement of the sill against the end profile in a direction parallel to the longitudinal extent of the sill. This applies in a corresponding manner for each further elastic sealing element which is arranged in the intermediate space between the end profile and web.

Preferably, a plurality of sealing elements are provided, which are arranged such that when plugged end profile on both sides of the web in each case at least one elastic sealing element comes to rest. This is independent of whether the sealing elements are attached to the parallel outer sides of the web or to the parallel inner sides of the end profile. The preferred arrangement of Sealing elements on both sides of the bridge allows both an expansion, as well as a shortening of the windowsill. An expansion undergoes the windowsill, for example, in prolonged sunlight. It shortens at low outside temperatures, especially in winter, or when temperatures drop significantly after prolonged exposure to sunlight. In these cases, the use of the elastic sealing elements proves to be advantageous as an expansion spring, since both an expansion, as well as a shortening of the sill over the elastic sealing elements can be accommodated in such a way that the change in length of the sill is substantially stress-free.

According to a first preferred embodiment of the invention, the elastic sealing element is formed as a solid profile and consists of polyethylene, polyurethane, ethylene-propylene-diene monomer or silicone foam. Such a foamed solid profile is easy to compress and ensures due to its closed-cell structure sufficient sealing of the gap between the end profile and the web against moisture penetration. According to an alternative embodiment, the elastic sealing element is designed as a round, elliptical, rectangular, bellows or diamond-shaped hollow chamber profile and is preferably made of silicone, rubber, PVC or a thermoplastic elastomer. When forming the sealing element as a hollow chamber profile, the required compressibility and the desired sealing effect are also ensured.

If the installation of the window takes place in the region of the insulating layer of an outer wall construction, the window sill also comes to lie in the region of the insulating layer. The compressibility of the elastic sealing element should therefore be matched to the compressibility of the insulating material of the insulating layer, to avoid that the changes in length are absorbed by the insulating material of the insulating layer instead of the elastic sealing element. Preferably, therefore, the material of the elastic sealing element is chosen such that it is easier to compress than the insulating material of the insulation layer. In the opposite case, pressure forces can be transmitted to the end profile via the elastic sealing profile, which cause the end profile to tear off the outer layer of plaster. Once cracks have formed, moisture can penetrate the wall construction. Cracking can be counteracted by using a relatively soft stretch spring or elastic sealing element. In this way, it is largely ensured that the connection of the windowsill remains permanently de-energized.

The above-described advantages of a relatively soft expansion spring come not only for exterior wall constructions in which the windows are used in the region of the insulating layer, but also when the supporting wall is part of the window reveal, i. the applied in the window reveal insulation and / or plaster layers learn about the supporting wall a certain support.

Figur 1a

einen schematischen Längsschnitt durch eine eingebaute erste erfindungsgemäße Fensterbank bei Normaltemperaturen,

Figur 1b

die Fensterbank der Figur 1a nach einer Ausdehnung aufgrund starker Sonneneinstrahlung,

Figur 2a

die Fensterbank der Figur 1a,

Figur 2b

die Fensterbank der Figur 2a nach einer Verkürzung aufgrund eines Temperaturabfalls,

Figur 3

einen schematischen Längsschnitt durch eine zweite erfindungsgemäße Fensterbank mit aufgestecktem Abschlussprofil und

Figur 4

einen schematischen Längsschnitt durch eine dritte erfindungsgemäße Fensterbank mit aufgestecktem Abschlussprofil.

Preferred embodiments of the invention are explained below with reference to the accompanying drawings. These show:

FIG. 1a

a schematic longitudinal section through a built-first window sill according to the invention at normal temperatures,

FIG. 1b

the windowsill of the FIG. 1a after expansion due to strong sunlight,

FIG. 2a

the windowsill of the FIG. 1a .

FIG. 2b

the windowsill of the FIG. 2a after a shortening due to a temperature drop,

FIG. 3

a schematic longitudinal section through a second window sill invention with attached end profile and

FIG. 4

a schematic longitudinal section through a third window sill invention with attached end profile.

Detailed description of the drawings

The in the FIG. 1a schematically illustrated first embodiment of a window sill 1 according to the invention has a lateral upstand to form a first leg of a cross-sectionally T-shaped web 4. To form the T-shaped cross-sectional profile of the first leg of the web 4 is welded to a parallel to the sill 1 aligned further leg. Alternatively, the web 4 may be formed as a cross-sectionally T-shaped profile and subsequently welded to the sill.

The in the Fig. 1a illustrated one-piece design of the web 4 with the sill 1 provides the highest possible degree of tightness, so that no surface water is able to penetrate through the sill area in the soffit area in the wall structure. Another advantage is the high dimensional stability of the window sill, so that a tilting or tilting of the web 4 with respect to the sill 1 is not expected. Since the web 4 serves to receive a closing profile 2, a permanently exact alignment of the closing profile 2 resting against the web 4 is ensured by the high dimensional stability. In the present case, the end profile 2 is U-shaped in cross-section. It has two parallel legs 2.1, 2.3 and a perpendicular thereto aligned legs 2.2, with which the end profile 2 rests on the aligned parallel to the sill 1 leg of the web 4.

The leg 2.2 of the end profile 2 serves to connect the window sill 1 to a window reveal 3. In the region of the window reveal 3, an insulating layer 7 is applied to a supporting outer wall 8 and then a plaster layer 6 consisting of a lower and a top coat. The multi-layer plaster layer 6 and the insulating layer 7 are brought up to the end profile 2, so that the resting on the web 4 leg 2.2 of the end profile 2 forms a clean end edge. This assumes that the sill 1 and the end profile 2 are installed before plastering. The end profile 2 can then be plastered with. After curing of the plaster layer 6, the end profile 2 is fixed in its position.

The web 4 is completely received in the U-shaped cross-section of the end profile 2 in such a way that under normal (climatic) conditions, the web 4 of the sill 1 comes to rest centrally with respect to the U-shaped end profile 2. Characterized in that the serving as a support for the end profile 2, parallel to the sill 1 aligned leg of the web 4 is formed shorter than the leg 2.2 of the end profile 2, a displacement of the sill 1 relative to the end profile in a direction parallel to the longitudinal extent of the sill. 1 possible. Thus, changes in length of the sill 1 can be both in the form of an expansion (see arrow A in FIG FIG. 1b ), as well as in the form of a shortening (see arrow V in FIG. 2b ). An extension of the sill 1 can be done, for example, due to prolonged sunlight, with the web 4 moves toward the outer wall 8. Thermally induced changes in length occur especially in window sills made of aluminum. Starting from a normal temperature of about 20 ° C, an aluminum sill can readily heat to 70 ° C and depending on their total length experienced a length of several millimeters. For example, if the total length of the sill is 300 cm and the temperature rises 50 ° C, the sill expands by about 3.5 mm. Similarly, the overall length of the sill 1 decreases at low outdoor temperatures, especially in winter, or if after prolonged exposure to the sun, the temperature is strong drops. At a temperature drop of 20 ° C to, for example, -10 ° C, the shortening of the sill can be about 2 mm.

The changes in length of the sill 1 at temperature rise and temperature drop are exemplary in the FIGS. 1a, 1b and 2a, 2b shown.

The cross-sectional dimensions of the web 4 and the end profile 2 are preferably matched to the expected extent of expansion or shortening of the sill 1. This ensures that sufficient freedom of movement remains. Factors to consider include the overall length and material of the sill and the expected temperatures.

In order to prevent ingress of moisture through the gap between the end profile 2 and the web 4 of the sill 1 in the wall construction, on both sides of the aligned perpendicular to the sill 1 leg of the web 4 each have an elastic sealing element 5 is arranged, the bias under the end profile. 2 is applied. However, the bias is chosen so small that the elastic sealing elements 5 are further compressible to allow a displacement of the sill 1 relative to the end profile 2. In the present case, the elastic sealing elements 5 are formed as a solid body and consist of a closed-cell and therefore non-absorbent foam material. Ingress of moisture can thus be effectively prevented.

The formation of the web 4 as a cross-sectionally T-shaped profile has the advantage that on the one hand a plane bearing surface for the end profile 2 is created over the aligned parallel to the sill 1 leg of the web 4, on the other hand, a sufficiently large gap between the web 4 and the end profile 2 remains to fill this with an elastic sealing material. The gap is dimensioned sufficiently large, so that instead of a solid profile, a hollow profile can be used as an elastic sealing element 5, which rests sealingly under bias on the end profile 2 and on the web 4.

From the FIG. 3 shows a modification of a window sill 1 according to the invention, which instead of a one-piece design of the web 4 with the sill 1 provides a non-positive and / or positive connection of the web 4 with the sill 1. According to the embodiment of the FIG. 3 the web 4 is formed in cross-section double-T-shaped, wherein the resting on the windowsill 1 leg has a fold. The non-positive and / or positive connection takes place here via an adhesive connection 9, wherein the web 4 is preferably placed on the window sill 1, that the fold of resting on the sill 1 leg engages around the side edge of the sill 1. The fold stabilizes the side edge of the windowsill and thus leads to an increased dimensional stability of the composite of windowsill 1 and web 4. In addition, the structure of the sill 1 corresponds to the window sill of Figures 1 and 2 ,

Another modification goes out of the FIG. 4 in which the web 4 is also formed in cross-section substantially double-T-shaped and the resting on the windowsill 1 leg of the web 4 is folded. The fold of the leg forms in the present case a clamping plate 10, with which the web 4 can be pushed over the side edge of the windowsill 1. The clamping plate 10 is formed such that it must be bent when sliding the web 4 on the windowsill 1. The deferred clamping plate 10 is therefore under bias on the underside of the sill 1 on. In this way, a positive and positive connection is effected.

Advantages of the embodiments of FIGS. 3 and 4 arise from the fact that the subsequent connection of the web 4 with the windowsill 1 allows the compensation of manufacturing tolerances on site at the site. Both the sill 1 and the outer wall 8 may have manufacturing tolerances, which may require compensation. The in the Figures 1 and 2 illustrated embodiments of a sill according to the invention have the advantage over that an increased dimensional stability of the sill 1 is given. The dimensional stability of the sill 1 and the elasticity of the sealing element 5 ensure that there is no tilting of the end profile 2 and thus tearing of the end profile 2 from the plaster layer 6. The formation of cracks or joints can thus be prevented or at least significantly reduced.

LIST OF REFERENCE NUMBERS

1

windowsill

2

connection profile

2.1

first leg

2.2

second leg

2.3

third thigh

3

Fensterlaibung

4

web

5

sealing element

6

Rendering

7

damp course

8th

outer wall

9

adhesive bond

10

clamping plate

Claims (10)

Window sill (1) with an attachable end profile (2) for connecting the window sill to a window reveal (3), wherein the end profile (2) has at least one first leg (2.1) in cross-section and one angled, preferably perpendicular to the first leg (2.1) comprising arranged second leg (2.2),
characterized in that the sill (1) for receiving the end profile (2) has at least one extending along a side edge, in cross-section substantially U, L, T or double T-shaped web (4), in one piece formed with the sill (1) or non-positively and / or positively connected to the sill (1). Window sill according to claim 1,
characterized in that the non-positive and / or positive connection of the web (4) with the window sill (1) is a clamping or adhesive connection. Window sill according to claim 1,
characterized in that the integral formation of the web (4) has been made with the sill (1) by edges, welding and / or soldering. Window sill according to one of the preceding claims,
characterized in that the sill (1) and the web (4) consist of the same material, wherein the material is preferably a plastic or a metal, in particular aluminum or an aluminum alloy. Window sill according to one of the preceding claims,
characterized in that the end profile (2) has a U-shaped cross section. Window sill according to one of the preceding claims,
characterized in that the window sill (1) comprises at least one elastic sealing element (5) which can be used as an expansion spring. Window sill according to claim 6,
characterized in that the elastic sealing element (5) on the web (4) or on the end profile (2) is arranged and applied with plugged end profile (2) under pretension on the end profile (2) and / or on the web (4). Window sill according to claim 6 or 7,
characterized in that the elastic sealing element (5) is compressible with attached end profile (2), so that a displacement of the sill (1) relative to the end profile (2) in a direction parallel to the longitudinal extension of the sill (1) is possible. Window sill according to one of claims 6 to 8,
characterized in that the elastic sealing element (5) is formed as a solid profile and consists of polyethylene, polyurethane, ethylene-propylene-diene monomer or silicone foam. Window sill according to one of claims 6 to 8,
characterized in that the elastic sealing element (5) is formed as a round, elliptical, rectangular, bellows or diamond-shaped hollow chamber profile and preferably consists of silicone, rubber, PVC or a thermoplastic elastomer.

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