EP2514904B1 - Window sill - Google Patents

Window sill Download PDF

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Publication number
EP2514904B1
EP2514904B1 EP12164798.6A EP12164798A EP2514904B1 EP 2514904 B1 EP2514904 B1 EP 2514904B1 EP 12164798 A EP12164798 A EP 12164798A EP 2514904 B1 EP2514904 B1 EP 2514904B1
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EP
European Patent Office
Prior art keywords
windowsill
web
end profile
window sill
profile
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EP12164798.6A
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German (de)
French (fr)
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EP2514904A2 (en
EP2514904A3 (en
Inventor
Reiner Fürstner
Karl Heinz Burger
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Sto SE and Co KGaA
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Sto SE and Co KGaA
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Publication of EP2514904A2 publication Critical patent/EP2514904A2/en
Publication of EP2514904A3 publication Critical patent/EP2514904A3/en
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Publication of EP2514904B1 publication Critical patent/EP2514904B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
    • E06B1/70—Sills; Thresholds
    • E06B1/702—Window sills
    • E06B1/705—End-caps therefor

Definitions

  • the invention relates to a window sill with the features of the preamble of claim 1.
  • a window sill has an attachable end profile for connecting the window sill to a window reveal.
  • the end profile comprises at least one first leg, as well as a second leg arranged at an angle, preferably at right angles to the first leg.
  • the closing profile accordingly preferably has an essentially L- or U-shaped cross-sectional profile.
  • window and “window reveal” are used, they also refer to doors and door reveals in a corresponding manner.
  • a window sill is usually a component that is industrially prefabricated to measure. The component then only needs 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.
  • 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 made via a rear upstand of the window sill, by means of which the window sill can be connected to the window frame of the window.
  • the rear upstand of the window sill is preferably screwed to the frame of the window.
  • the connection to the wall structures of the outer wall is usually made via a separate end profile that can be connected to the window sill and is arranged in the area of the window reveal.
  • the window reveal is the part of the outer wall which laterally delimits the opening into which the window is inserted.
  • the outer wall comprises insulating layers and / or single or multi-layer plaster structures, these are brought up to the window around the reveal. If a single or multi-layer plaster structure forms the end of the facade, the window sill is inserted first and then the plaster is applied. The plaster layers are brought up to the end profile of the window sill. When the plaster layers harden, the end profile is then fixed in its position.
  • the connection of the end profile to the window sill is often designed in such a way that it allows the window sill to be displaced relative to the end profile in a direction parallel to the longitudinal extension of the window sill. At the same time, however, it must be ensured that the connection between the window sill and the window reveal is tight, in order to prevent moisture from penetrating into the wall construction of the outer wall via the connection joint.
  • the cover profile has an essentially L-shaped cross section with a first leg and a second leg and a web running perpendicular to the first leg and parallel to the second leg. The web is completely taken up by the elastic sealing device, which is inserted into one at the end of the window sill arranged C-shaped profile is used.
  • the elastic sealing device cannot guarantee a permanently parallel alignment of the cover profile to the window sill surface in the event of a thermally induced change in length of the window sill. This is because the elastic sealing device cannot prevent the cover profile from tilting or tilting in the event of large changes in length, which can lead to the formation of cracks between the cover profile 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.
  • the receiving profile which is essentially 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 is intended to counteract tilting or inclination of the end profile.
  • the DE 20 2004 019 812 U1 discloses a window sill with the features of the preamble of claim 1. From the DE 20 2004 019 812 U1 Furthermore, a device for receiving one side of a window sill is known which comprises an end strip and a compensation profile inserted therein. The compensation profile is held displaceably in the end strip, while a free end face of the window sill is locked in a receiving pocket of the compensation profile.
  • a wall composite for metal window sills also goes from the DE 20 2010 015 326 U1 emerged.
  • the wall composite comprises a wall strip for connection to the window sill, onto which an elastically flexible profile strip is attached.
  • the wall strip and the profile strip are enclosed by a housing for coupling to the wall.
  • a very similar window sill goes out of the DE 93 00 556 U1 out, with a buffer being arranged between the two side profile parts.
  • connection element for the lateral connection of a window sill to plaster or masonry with a damper element between a receiving profile and a connection profile is also from the EP 1 580 386 A1 known.
  • the object of the present invention is to provide a window sill with a clip-on closing profile which, on the one hand, is simple and on the other hand counteracts tilting or inclination of the closing profile when the window sill changes in length.
  • the proposed window sill has an attachable end profile for connecting the window sill to a window reveal.
  • the end profile comprises in cross section at least a first leg and a second leg arranged at an angle, preferably at right angles to the first leg.
  • the window sill has at least one web running along a side edge, essentially T-shaped or double-T-shaped in cross-section, which is formed in one piece with the window sill or connected to the window sill in a non-positive and / or positive manner is.
  • the preferably L- or U-shaped end profile for connection to the window sill is attached to the web of the window sill, at least one leg of the end profile comes to rest on a leg of the T-shaped or double-T-shaped web, which is aligned parallel to the window sill surface is.
  • the end profile is thus also oriented parallel to the window sill surface, at least in relation to the limb resting on the limb of the web.
  • tilting or inclination of the end profile when the window sill changes in length is largely ruled out.
  • the one-piece design of the web with the window sill leads to increased dimensional rigidity, so that a permanently parallel alignment of the leg of the web serving as a support is ensured parallel to the window sill surface. Tilting of the end profile can only be prevented if the web also permanently maintains its alignment with respect to the window sill surface. This requirement is best met when the web is formed in one piece with the window sill.
  • the leg of the web serving as a support is designed to be shorter than the leg of the end profile resting on it.
  • the web be connected to the window sill in a non-positive and / or positive manner.
  • the non-positive and / or positive connection should also effectively prevent a change in the alignment of the web with respect to the window sill surface.
  • the force-fitting and / or form-fitting connection of the web to the window sill is preferably a clamped or adhesive connection.
  • a clamp connection on the web, which is also preferably double-T-shaped in cross section, a clamping lug which engages around the side edge of the window sill.
  • the clamping lug is preferably designed to be slightly resilient and is deformed when the web is pushed onto the side edge of the window sill, so that the clamping lug rests against the window sill under prestress.
  • the clamp connection has the advantage that any manufacturing tolerances of the window sill or construction tolerances on site can be compensated for.
  • an adhesive connection can be provided. In this case, however, when using an adhesive which produces a permanent adhesive connection, subsequent non-destructive detachment of the web from the window sill is no longer possible.
  • this is preferably produced by edging, welding and / or soldering.
  • a web with a T-shaped or double-T-shaped cross-section can be produced by edging and welding or soldering.
  • the window sill and the web can initially be produced separately and then connected in one piece by means of welding or soldering.
  • the web and the window sill consist of the same material.
  • the material is preferably a plastic or a metal, in particular aluminum or an aluminum alloy.
  • the use of the above-mentioned materials leads to a low weight of the window sill made from them, which is consequently easier to handle.
  • the window sill and the web can be made of different materials, in particular if they are not formed in one piece.
  • combinations of the aforementioned materials can be used, for example a combination of the materials aluminum and plastic.
  • the terminating profile that can be slipped onto the web advantageously has a U-shaped cross section.
  • the end profile can accordingly be slipped onto the web in such a way that the two parallel legs of the U-shaped cross section enclose the web.
  • the further leg of the end profile serving to connect the two parallel legs rests against a leg of the web that is aligned parallel to the window sill surface.
  • the leg of the web is - viewed in cross section - designed to be shorter than the adjacent leg of the end profile in order to enable the window sill to be displaced relative to the end profile in a direction parallel to the longitudinal extension of the window sill.
  • the window sill comprises at least one elastic sealing element that can be used as an expansion strip.
  • the elastic sealing element prevents moisture from penetrating into the wall structure via the space between the end profile and the web of the window sill.
  • At least one elastic sealing element is preferably arranged on both sides of the web, which sealingly fills the space between the web and the end profile. Due to the elasticity or compressibility of the sealing element or the sealing elements, a displacement of the window sill relative to the end profile in a direction parallel to the longitudinal extent of the window sill is also possible.
  • the at least one elastic sealing element is arranged on the web or on the end profile and, when the end profile is attached, bears against the end profile and / or on the web under prestress.
  • At least two elastic sealing elements are preferably arranged on both sides of the leg of the web which is essentially 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.
  • the elastic sealing element In order to effect the clamping connection, the elastic sealing element must be slightly compressed when the end profile is attached. This also improves the sealing effect.
  • the sealing element should, however, be compressible further when the end profile is attached, in order to enable the window sill to be displaced relative to the end profile in a direction parallel to the longitudinal extension of the window sill. This applies in a corresponding manner to each additional elastic sealing element which is arranged in the space between the end profile and the web.
  • a plurality of sealing elements are preferably provided, which are arranged in such a way that at least one elastic sealing element comes to rest on both sides of the web when the end profile is attached. This can be implemented regardless 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 the sealing elements on both sides of the web enables both an expansion and a shortening of the window sill.
  • the window sill expands, for example, with prolonged exposure to the sun. It is shorter at low outside temperatures, especially in winter, or when temperatures drop significantly after prolonged exposure to the sun.
  • the use of the elastic sealing elements as expansion strips proves to be advantageous, since both an expansion and a shortening of the window sill can be absorbed by the elastic sealing elements in such a way that the change in length of the window sill is essentially free of tension.
  • the elastic sealing element is designed as a solid profile and consists of polyethylene, polyurethane, Ethylene-propylene-diene monomer or silicone foam. Such a foamed full profile is easy to compress and, due to its closed-cell structure, ensures that the space between the end profile and the web is adequately sealed against penetrating moisture.
  • the elastic sealing element is designed as a round, elliptical, rectangular, bellows-shaped or diamond-shaped hollow chamber profile and is preferably made of silicone, rubber, PVC or a thermoplastic elastomer. When the sealing element is designed as a hollow chamber profile, the required compressibility and the desired sealing effect are also ensured.
  • the window sill also comes to lie in the area of the insulation level.
  • the compressibility of the elastic sealing element should therefore be matched to the compressibility of the insulating material of the insulating layer in order to avoid that the changes in length are absorbed by the insulating material of the insulating layer instead of the elastic sealing element.
  • the material of the elastic sealing element is therefore preferably selected such that it is easier to compress than the insulating material of the insulating plane.
  • compressive forces can be transmitted to the end profile via the elastic sealing profile, which lead to the end profile being torn off from the external plaster layer.
  • the schematically illustrated first embodiment of a window sill 1 has a lateral edging for forming a first leg of a web 4 with a T-shaped cross-section.
  • the first leg of the web 4 is welded to a further leg aligned parallel to the window sill 1.
  • the web 4 can be designed as a profile with a T-shaped cross-section and subsequently welded to the window sill.
  • the one-piece design of the web 4 with the window sill 1 shown in FIG. 1 a offers the highest possible degree of tightness, so that no surface water can penetrate into the wall structure via the window sill connection in the reveal area.
  • the high dimensional stability of the window sill proves to be a further advantage, so that tilting or inclination of the web 4 with respect to the window sill 1 is not to be expected.
  • the web 4 is used to accommodate an end profile 2, the high dimensional stability also ensures a permanently exact alignment of the end profile 2 resting on the web 4.
  • the end profile 2 is U-shaped in cross section. It has two parallel legs 2.1, 2.3 as well as a leg 2.2 aligned perpendicular thereto, with which the end profile 2 rests on the leg of the web 4 aligned parallel to the window sill 1.
  • the leg 2.2 of the end profile 2 is used to connect the window sill 1 to a window reveal 3.
  • an insulating layer 7 is applied to a load-bearing outer wall 8 and a plaster layer 6 consisting of a base and top plaster.
  • the multilayer plaster layer 6 and the insulating layer 7 are brought up to the end profile 2, so that the leg 2.2 of the end profile 2 resting on the web 4 forms a clean end edge.
  • the end profile 2 can then be plastered in. After the plaster layer 6 has hardened, 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 window sill 1 comes to lie centrally with respect to the U-shaped end profile 2. Because the leg of the web 4, which serves as a support for the end profile 2 and is aligned parallel to the window sill 1, is shorter than the leg 2.2 of the end profile 2, the window sill 1 is shifted relative to the end profile in a direction parallel to the longitudinal extent of the window sill 1 possible. Changes in the length of the window sill 1 can thus be made in the form of an expansion (see arrow A in Figure 1b ), as well as in the form of a shortening (see arrow V in Figure 2b ), be balanced.
  • An expansion of the window sill 1 can take place, for example, due to prolonged exposure to sunlight, the web 4 moving towards the outer wall 8.
  • Thermally induced changes in length occur particularly with window sills made of aluminum.
  • an aluminum window sill can easily heat up to 70 ° C and, depending on its overall length, experience a linear expansion of several millimeters.
  • the total length of the window sill is 300 cm and the temperature rises by 50 ° C, the window sill expands by about 3.5 mm.
  • the total length of the window sill 1 is reduced at low outside temperatures, particularly in winter, or when the temperature drops sharply after prolonged exposure to the sun. If the temperature drops from 20 ° C to -10 ° C, for example, the shortening of the window sill can be about 2 mm.
  • the cross-sectional dimensions of the web 4 and of the end profile 2 are preferably matched to the expected extent of the expansion or shortening of the window sill 1. This ensures that there is enough freedom of movement. Factors to be considered are the overall length and material of the window sill as well as the temperatures to be expected.
  • an elastic sealing element 5 is arranged on both sides of the leg of the web 4, which is oriented perpendicular to the window sill 1 is applied.
  • the preload is selected to be so low that the elastic sealing elements 5 can be further compressed in order to allow the window sill 1 to be displaced relative to the end profile 2.
  • the elastic sealing elements 5 are designed as solid bodies and consist of a closed-cell and therefore non-absorbent foam material. Penetration of moisture can thus be effectively prevented.
  • the formation of the web 4 as a cross-section T-shaped profile has the advantage that on the one hand a flat support surface for the end profile 2 is created over the leg of the web 4 aligned parallel to the window sill 1, and on the other hand a sufficiently large space between the web 4 and the end profile 2 remains in order 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 also be used as an elastic sealing element 5, which rests sealingly on the end profile 2 and on the web 4 under prestress.
  • 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 window sill 1 has a power and / or provides a form-fitting connection between the web 4 and the window sill 1.
  • the web 4 is double-T-shaped in cross section, the leg resting on the window sill 1 having a bevel.
  • the non-positive and / or form-fitting connection takes place via an adhesive connection 9, the web 4 preferably being placed on the window sill 1 in such a way that the fold of the leg resting on the window sill 1 encompasses the side edge of the window sill 1.
  • the fold stabilizes the side edge of the window sill and thus leads to increased dimensional stability of the composite of window sill 1 and web 4.
  • the structure of the window sill 1 corresponds to that of the window sill Figures 1 and 2 .
  • FIG. 4 Another variation comes from the Figure 4 in which the web 4 is also essentially double-T-shaped in cross-section and the leg of the web 4 resting on the window sill 1 is bevelled.
  • the fold of the leg forms a clamping strap 10 with which the web 4 can be pushed onto the window sill 1 over the side edge.
  • the clamping tab 10 is designed in such a way that it has to be bent open when the web 4 is pushed onto the window sill 1.
  • the pushed-on clamping lug 10 therefore rests against the underside of the window sill 1 under prestress. In this way, a non-positive and positive connection is achieved.
  • the subsequent connection of the web 4 to the window sill 1 enables the compensation of manufacturing tolerances on site at the construction site.
  • Both the window sill 1 and the outer wall 8 can have manufacturing tolerances which may require compensation.
  • the ones in the Figures 1 and 2 In contrast, the illustrated embodiments of a window sill according to the invention have the advantage that there is increased dimensional stability of the window sill 1.
  • the dimensional stability of the window sill 1 and the elasticity of the sealing element 5 ensure that the end profile 2 does not tilt and thus the end profile 2 does not tear from the plaster layer 6 comes. The formation of cracks or joints can thus be prevented or at least significantly reduced.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Door And Window Frames Mounted To Openings (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Building Environments (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)

Description

Die Erfindung betrifft eine Fensterbank mit den Merkmalen des Oberbegriffs des Anspruchs 1. Eine solche Fensterbank besitzt ein aufsteckbares Abschlussprofil für den Anschluss der Fensterbank an eine Fensterlaibung. Das Abschlussprofil umfasst im Querschnitt wenigstens einen ersten Schenkel, sowie einen winklig, vorzugsweise rechtwinklig zum ersten Schenkel angeordneten zweiten Schenkel. Das Abschlussprofil weist demnach bevorzugt ein im Wesentlichen L- oder U-förmiges Querschnittsprofil auf.The invention relates to a window sill with the features of the preamble of claim 1. Such a window sill has an attachable end profile for connecting the window sill to a window reveal. In cross section, the end profile comprises at least one first leg, as well as a second leg arranged at an angle, preferably at right angles to the first leg. The closing profile accordingly preferably has an essentially L- or U-shaped cross-sectional profile.

Es wird darauf hingewiesen, dass sofern die Begriffe "Fenster" und "Fensterlaibung" verwendet werden, sich diese in entsprechender Weise auch auf Türen und Türlaibungen beziehen.It should be noted that if the terms "window" and "window reveal" are used, they also refer to doors and door reveals in a corresponding manner.

Stand der TechnikState of the art

Bei einer Fensterbank handelt es sich in der Regel um ein Bauteil, das auf Maß industriell vorgefertigt wird. Das Bauteil muss dann nur noch vor Ort eingesetzt und an angrenzende Bauteile angeschlossen werden. Angrenzende Bauteile sind insbesondere die Wandaufbauten der Außenwand sowie wenigstens ein in die Außenwand eingesetztes Fenster. Der Anschluss an das Fenster erfolgt in der Regel über eine rückwärtige Aufkantung der Fensterbank, mittels welcher die Fensterbank mit dem Blendrahmen des Fensters verbindbar ist. Vorzugsweise wird die rückwärtige Aufkantung der Fensterbank mit dem Blendrahmen des Fensters verschraubt. Der Anschluss an die Wandaufbauten der Außenwand erfolgt in der Regel über ein separates mit der Fensterbank verbindbares Abschlussprofil, das im Bereich der Fensterlaibung angeordnet wird. Die Fensterlaibung ist der Teil der Außenwand, welcher die Öffnung, in welche das Fenster eingesetzt ist, seitlich begrenzt. In der Regel verläuft die Laibung senkrecht zur Fensterebene. Eine Fensterlaibung entfällt, wenn das Fenster fassadenbündig in die Außenwand eingesetzt ist. Aus bauphysikalischen Gründen werden Fenster jedoch regelmäßig gegenüber der Fassadenebene zurückliegend, bevorzugt im Bereich der Dämmebene oder flächenbündig mit der tragenden Wand eingebaut.A window sill is usually a component that is industrially prefabricated to measure. The component then only needs 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 made via a rear upstand of the window sill, by means of which the window sill can be connected to the window frame of the window. The rear upstand of the window sill is preferably screwed to the frame of the window. The connection to the wall structures of the outer wall is usually made via a separate end profile that can be connected to the window sill and is arranged in the area of the window reveal. The window reveal is the part of the outer wall which laterally delimits the opening into which the window is inserted. Usually the Reveal perpendicular to the window level. There is no need for a window reveal if the window is inserted flush with the facade. For reasons of building physics, however, windows are usually installed behind the facade level, preferably in the area of the insulation level or flush with the load-bearing wall.

Sofern die Außenwand Dämmschichten und/oder ein- oder mehrlagige Putzaufbauten umfasst, werden diese um die Laibung herum bis an das Fenster herangeführt. Bildet ein ein- oder mehrlagiger Putzaufbau den Abschluss der Fassade, wird zunächst die Fensterbank eingesetzt und danach der Putz aufgetragen. Die Putzschichten werden dabei bis an das Abschlussprofil der Fensterbank herangeführt. Mit Aushärten der Putzschichten ist dann das Abschlussprofil in seiner Lage fixiert. Zur Aufnahme thermisch bedingter Längenänderungen der Fensterbank, ist die Verbindung des Abschlussprofils mit der Fensterbank häufig derart gestaltet, dass sie eine Verschiebung der Fensterbank gegenüber dem Abschlussprofil in einer Richtung parallel zur Längserstreckung der Fensterbank zulässt. Zugleich muss jedoch sichergestellt sein, dass der Anschluss der Fensterbank an die Fensterlaibung dicht ist, um zu verhindern, dass Feuchtigkeit über die Anschlussfuge in die Wandkonstruktion der Außenwand eindringt.If the outer wall comprises insulating layers and / or single or multi-layer plaster structures, these are brought up to the window around the reveal. If a single or multi-layer plaster structure forms the end of the facade, the window sill is inserted first and then the plaster is applied. The plaster layers are brought up to the end profile of the window sill. When the plaster layers harden, the end profile is then fixed in its position. To accommodate thermally induced changes in length of the window sill, the connection of the end profile to the window sill is often designed in such a way that it allows the window sill to be displaced relative to the end profile in a direction parallel to the longitudinal extension of the window sill. At the same time, however, it must be ensured that the connection between the window sill and the window reveal is tight, in order to prevent moisture from penetrating into the wall construction of the outer wall via the connection joint.

Aus der Offenlegungsschrift DE 32 31 600 A1 geht eine Aluminium-Fensterbank mit seitlichen Abschlussenden hervor, welche jeweils ein entgegen der Wirkung einer elastischen Abdichtvorrichtung axial verschiebbares, Längenänderungen der Fensterbank bei Temperaturschwankungen kompensierendes Abdeckprofil umfassen. Durch die elastische Abdichtvorrichtung wird zugleich das Eindringen von Feuchtigkeit durch Spalten und Fugen zwischen den Abschlussenden der Fensterbank und dem Mauerwerk verhindert. Das Abdeckprofil weist einen im Wesentlichen L-förmigen Querschnitt mit einem ersten Schenkel und einem zweiten Schenkel sowie einem senkrecht zum ersten Schenkel und parallel zum zweiten Schenkel verlaufenden Steg auf. Der Steg wird vollständig von der elastischen Abdichtvorrichtung aufgenommen, welche in ein am Abschlussende der Fensterbank angeordnetes C-förmiges Profil eingesetzt ist. Somit wird ein flexibler und zugleich dichter Anschluss der Fensterbank an die Fensterlaibung geschaffen. Als nachteilig erweist sich jedoch, dass die elastische Abdichtungsvorrichtung bei einer thermisch bedingten Längenänderung der Fensterbank keine dauerhaft parallele Ausrichtung des Abdeckprofils zur Fensterbankoberfläche gewährleisten kann. Denn die elastische Abdichtungsvorrichtung vermag ein Kippen bzw. Schrägstellen des Abdeckprofils bei großen Längenänderungen nicht zu verhindern, was zu einer Rissbildung zwischen dem Abdeckprofil und der Putzschicht führen kann. Neben der optischen Beeinträchtigung besteht ferner die Gefahr, dass aufgrund der Rissbildung die Dichtheit des Anschlusses nicht mehr gewährleistet ist.From the publication DE 32 31 600 A1 shows an aluminum window sill with lateral end ends, each of which includes a cover profile that can be axially displaced against the action of an elastic sealing device and compensates for changes in length of the window sill in the event of temperature fluctuations. The elastic sealing device also prevents moisture from penetrating through gaps and joints between the ends of the window sill and the masonry. The cover profile has an essentially L-shaped cross section with a first leg and a second leg and a web running perpendicular to the first leg and parallel to the second leg. The web is completely taken up by the elastic sealing device, which is inserted into one at the end of the window sill arranged C-shaped profile is used. This creates a flexible and at the same time tight connection between the window sill and the window reveal. However, it has proven to be disadvantageous that the elastic sealing device cannot guarantee a permanently parallel alignment of the cover profile to the window sill surface in the event of a thermally induced change in length of the window sill. This is because the elastic sealing device cannot prevent the cover profile from tilting or tilting in the event of large changes in length, which can lead to the formation of cracks between the cover profile 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.

Eine Weiterbildung der zuvor beschriebenen Fensterbank geht aus der DE 20 2008 004 201 U1 hervor. Als weiterbildende Maßnahme ist vorgesehen, dass das im Querschnitt im Wesentlichen C-förmig ausgebildete Aufnahmeprofil einen flanschartigen Steg zur Aufnahme bzw. Auflage des Abschlussprofils besitzt. Die zusätzliche Auflage bzw. Abstützung des Abschlussprofils soll einem Kippen bzw. Schrägstellen des Abschlussprofils entgegenwirken.A development of the window sill described above is based on the DE 20 2008 004 201 U1 emerged. As a further development, it is provided that the receiving profile, which is essentially 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 is intended to counteract tilting or inclination of the end profile.

Die DE 20 2004 019 812 U1 offenbart eine Fensterbank mit den Merkmalen des Oberbegriffes des Anspruchs 1. Aus der DE 20 2004 019 812 U1 ist ferner eine Vorrichtung zur Aufnahme einer Seite einer Fensterbank bekannt, die eine Abschlussleiste und ein hierin eingesetztes Ausgleichsprofil umfasst. Das Ausgleichsprofil ist dabei verschieblich in der Abschlussleiste gehalten, während eine freie Stirnseite der Fensterbank in einer Aufnahmetasche des Ausgleichsprofils arretiert ist.The DE 20 2004 019 812 U1 discloses a window sill with the features of the preamble of claim 1. From the DE 20 2004 019 812 U1 Furthermore, a device for receiving one side of a window sill is known which comprises an end strip and a compensation profile inserted therein. The compensation profile is held displaceably in the end strip, while a free end face of the window sill is locked in a receiving pocket of the compensation profile.

Ein Wandverbund für Metall-Fensterbänke geht ferner aus der DE 20 2010 015 326 U1 hervor. Der Wandverbund umfasst eine Wandleiste zur Verbindung mit der Fensterbank, auf welche ein elastisch nachgiebiger Profilstreifen aufgesteckt ist. Die Wandleiste und der Profilstreifen werden dabei von einem Gehäuse zur Kopplung mit der Wand umschlossen.A wall composite for metal window sills also goes from the DE 20 2010 015 326 U1 emerged. The wall composite comprises a wall strip for connection to the window sill, onto which an elastically flexible profile strip is attached. The wall strip and the profile strip are enclosed by a housing for coupling to the wall.

DE 93 05 776 U1 offenbart eine Fensterbank mit einem Deckteil und seitlichen Profilteilen. Das Deckteil ist in einem ersten seitlichen Profilteil klemmend gehalten, wobei das erste seitliche Profilteil von einem zweiten seitlichen Profilteil abgedeckt wird. DE 93 05 776 U1 discloses a window sill with a cover part and side profile parts. The cover part is held in a clamping manner in a first lateral profile part, the first lateral profile part being covered by a second lateral profile part.

Eine sehr ähnlich aufgebaute Fensterbank geht aus der DE 93 00 556 U1 hervor, wobei zwischen den beiden seitlichen Profilteilen noch ein Puffer angeordnet ist.A very similar window sill goes out of the DE 93 00 556 U1 out, with a buffer being arranged between the two side profile parts.

Ein Anschlusselement für den seitlichen Anschluss einer Fensterbank an Putz oder Mauerwerk mit einem Dämpferelement zwischen einem Aufnahmeprofil und einem Anschlussprofil ist ferner aus der EP 1 580 386 A1 bekannt.A connection element for the lateral connection of a window sill to plaster or masonry with a damper element between a receiving profile and a connection profile is also from the EP 1 580 386 A1 known.

Ausgehend von dem vorstehend genannten Stand der Technik ist es Aufgabe der vorliegenden Erfindung, eine Fensterbank mit einem aufsteckbaren Abschlussprofil bereitzustellen, welche zum Einen einfach aufgebaut ist und zum Anderen einem Verkippen bzw. Schrägstellen des Abschlussprofils entgegenwirkt, wenn die Fensterbank eine Längenänderung erfährt.Based on the above-mentioned prior art, the object of the present invention is to provide a window sill with a clip-on closing profile which, on the one hand, is simple and on the other hand counteracts tilting or inclination of the closing profile when the window sill changes in length.

Die Aufgabe wird gelöst durch eine Fensterbank mit den Merkmalen des Anspruchs 1. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.The object is achieved by a window sill with the features of claim 1. Advantageous developments of the invention are specified in the subclaims.

Offenbarung der ErfindungDisclosure of the invention

Die vorgeschlagene Fensterbank weist ein aufsteckbares Abschlussprofil für den Anschluss der Fensterbank an eine Fensterlaibung auf. Das Abschlussprofil umfasst im Querschnitt wenigstens einen ersten Schenkel sowie einen winklig, vorzugsweise rechtwinklig zum ersten Schenkel angeordneten zweiten Schenkel. Ferner besitzt die Fensterbank zur Aufnahme des Abschlussprofils wenigstens einen entlang einer Seitenkante verlaufenden, im Querschnitt im Wesentlichen T- oder Doppel-T-förmig ausgebildeten Steg, der einstückig mit der Fensterbank ausgebildet oder kraft- und/oder formschlüssig mit der Fensterbank verbunden ist. Wird das vorzugsweise L- oder U-förmige Abschlussprofil zur Verbindung mit der Fensterbank auf den Steg der Fensterbank aufgesteckt, kommt wenigstens ein Schenkel des Abschlussprofils auf einen Schenkel des T- oder Doppel-T-förmig ausgebildeten Steges zu liegen, welcher parallel zur Fensterbankoberfläche ausgerichtet ist. Somit erfährt auch das Abschlussprofil - zumindest in Bezug auf den am Schenkel des Steges anliegenden Schenkel - eine parallele Ausrichtung zur Fensterbankoberfläche. Zudem ist ein Verkippen bzw. Schrägstellen des Abschlussprofils bei einer Längenänderung der Fensterbank weitgehend ausgeschlossen.The proposed window sill has an attachable end profile for connecting the window sill to a window reveal. The end profile comprises in cross section at least a first leg and a second leg arranged at an angle, preferably at right angles to the first leg. Furthermore, the window sill has at least one web running along a side edge, essentially T-shaped or double-T-shaped in cross-section, which is formed in one piece with the window sill or connected to the window sill in a non-positive and / or positive manner is. If the preferably L- or U-shaped end profile for connection to the window sill is attached to the web of the window sill, at least one leg of the end profile comes to rest on a leg of the T-shaped or double-T-shaped web, which is aligned parallel to the window sill surface is. The end profile is thus also oriented parallel to the window sill surface, at least in relation to the limb resting on the limb of the web. In addition, tilting or inclination of the end profile when the window sill changes in length is largely ruled out.

Die einstückige Ausbildung des Steges mit der Fensterbank führt zu einer erhöhten Formsteifigkeit, so dass eine dauerhaft parallele Ausrichtung des als Auflage dienenden Schenkels des Steges parallel zur Fensterbankoberfläche gewährleistet ist. Denn ein Verkippen des Abschlussprofils kann nur verhindert werden, wenn auch der Steg seine Ausrichtung in Bezug auf die Fensterbankoberfläche dauerhaft beibehält. Diese Anforderung wird am besten erfüllt, wenn der Steg einstückig mit der Fensterbank ausgebildet ist.The one-piece design of the web with the window sill leads to increased dimensional rigidity, so that a permanently parallel alignment of the leg of the web serving as a support is ensured parallel to the window sill surface. Tilting of the end profile can only be prevented if the web also permanently maintains its alignment with respect to the window sill surface. This requirement is best met when the web is formed in one piece with the window sill.

Um bei einer Längenänderung der Fensterbank eine Verschiebung der Fensterbank gegenüber dem Abschlussprofil zu ermöglichen, ist der als Auflage dienende Schenkel des Stegs kürzer als der hierauf aufliegende Schenkel des Abschlussprofils ausgebildet.In order to enable the window sill to be displaced with respect to the end profile when the window sill changes in length, the leg of the web serving as a support is designed to be shorter than the leg of the end profile resting on it.

Alternativ zur einstückigen Ausbildung des Steges mit der Fensterbank wird vorgeschlagen, dass der Steg kraft- und/oder formschlüssig mit der Fensterbank verbunden ist. Die kraft- und/oder formschlüssige Verbindung sollte dabei ebenfalls eine Änderung der Ausrichtung des Steges gegenüber der Fensterbankoberfläche wirksam verhindern.As an alternative to the one-piece design of the web with the window sill, it is proposed that the web be connected to the window sill in a non-positive and / or positive manner. The non-positive and / or positive connection should also effectively prevent a change in the alignment of the web with respect to the window sill surface.

Vorzugsweise ist die kraft- und/oder formschlüssige Verbindung des Steges mit der Fensterbank eine Klemm- oder Klebeverbindung. Zur Realisierung einer Klemmverbindung kann am Steg, der weiterhin vorzugsweise im Querschnitt Doppel-T-förmig ausgebildet ist, eine Klemmlasche ausgebildet sein, welche die Seitenkante der Fensterbank umgreift. Vorzugsweise ist die Klemmlasche geringfügig federnd ausgebildet und verformt sich beim Aufschieben des Steges auf die Seitenkante der Fensterbank, so dass die Klemmlasche unter Vorspannung an der Fensterbank anliegt. Die Klemmverbindung weist gegenüber der einstückigen Ausbildung den Vorteil auf, dass etwaige Fertigungstoleranzen der Fensterbank bzw. bauseitige Bautoleranzen vor Ort ausgleichbar sind. Alternativ oder ergänzend kann eine Klebeverbindung vorgesehen werden. In diesem Fall ist jedoch - bei Verwendung eines eine dauerhafte Klebeverbindung bewirkenden Klebers - ein nachträgliches zerstörungsfreies Lösen des Steges von der Fensterbank nicht mehr möglich.The force-fitting and / or form-fitting connection of the web to the window sill is preferably a clamped or adhesive connection. To realize a clamp connection, on the web, which is also preferably double-T-shaped in cross section, a clamping lug which engages around the side edge of the window sill. The clamping lug is preferably designed to be slightly resilient and is deformed when the web is pushed onto the side edge of the window sill, so that the clamping lug rests against the window sill under prestress. Compared to the one-piece design, the clamp connection has the advantage that any manufacturing tolerances of the window sill or construction tolerances on site can be compensated for. Alternatively or in addition, an adhesive connection can be provided. In this case, however, when using an adhesive which produces a permanent adhesive connection, subsequent non-destructive detachment of the web from the window sill is no longer possible.

Bei der einstückigen Ausbildung von Steg und Fensterbank ist diese vorzugsweise durch Kanten, Schweißen und/oder Löten hergestellt worden. Beispielsweise kann ein im Querschnitt T- oder Doppel-T-förmiger Steg durch Kanten und Schweißen bzw. Löten hergestellt worden sein. Darüber hinaus können die Fensterbank und der Steg zunächst separat hergestellt und dann mittels Schweißen bzw. Löten einstückig verbunden worden sein.In the one-piece design of the web and window sill, this is preferably produced by edging, welding and / or soldering. For example, a web with a T-shaped or double-T-shaped cross-section can be produced by edging and welding or soldering. In addition, the window sill and the web can initially be produced separately and then connected in one piece by means of welding or soldering.

Zur Vereinfachung der einstückigen Ausbildung von Steg und Fensterbank wird weiterhin vorgeschlagen, dass der Steg und die Fensterbank aus dem gleichen Werkstoff bestehen. Der Werkstoff ist vorzugsweise ein Kunststoff oder ein Metall, insbesondere Aluminium oder eine Aluminiumlegierung. Die Verwendung der vorstehend genannten Werkstoffe führt zu einem geringen Gewicht der hieraus gefertigten Fensterbank, welche demzufolge leichter zu handhaben ist.To simplify the one-piece design of the web and window sill, it is also proposed that the web and the window sill consist of the same material. The material is preferably a plastic or a metal, in particular aluminum or an aluminum alloy. The use of the above-mentioned materials leads to a low weight of the window sill made from them, which is consequently easier to handle.

Des Weiteren können Fensterbank und Steg, insbesondere bei nicht einstückiger Ausbildung, aus unterschiedlichen Werkstoffen hergestellt sein. Beispielsweise können Kombinationen der vorstehend genannten Werkstoffe eingesetzt werden, zum Beispiel eine Kombination der Werkstoffe Aluminium und Kunststoff.Furthermore, the window sill and the web can be made of different materials, in particular if they are not formed in one piece. For example, combinations of the aforementioned materials can be used, for example a combination of the materials aluminum and plastic.

Vorteilhafterweise besitzt das auf den Steg aufsteckbare Abschlussprofil einen U-förmigen Querschnitt. Das Abschlussprofil kann demnach derart auf den Steg aufgesteckt werden, dass die beiden parallelen Schenkel des U-förmigen Querschnitts den Steg einfassen. Der der Verbindung der beiden parallelen Schenkeln dienende weitere Schenkel des Abschlussprofils liegt dabei an einem parallel zur Fensterbankoberfläche ausgerichteten Schenkel des Steges an. Der Schenkel des Steges ist - im Querschnitt betrachtet - kürzer als der hieran anliegende Schenkel des Abschlussprofils ausgebildet, um eine Verschiebung der Fensterbank gegenüber dem Abschlussprofil in eine Richtung parallel zur Längserstreckung der Fensterbank zu ermöglichen.The terminating profile that can be slipped onto the web advantageously has a U-shaped cross section. The end profile can accordingly be slipped onto the web in such a way that the two parallel legs of the U-shaped cross section enclose the web. The further leg of the end profile serving to connect the two parallel legs rests against a leg of the web that is aligned parallel to the window sill surface. The leg of the web is - viewed in cross section - designed to be shorter than the adjacent leg of the end profile in order to enable the window sill to be displaced relative to the end profile in a direction parallel to the longitudinal extension of the window sill.

Erfindungsgemäß umfasst die Fensterbank wenigstens ein als Dehnungskeder einsetzbares elastisches Dichtungselement. Das elastische Dichtungselement verhindert, dass Feuchtigkeit über den Zwischenraum zwischen dem Abschlussprofil und dem Steg der Fensterbank in die Wandkonstruktion eindringen kann. Bevorzugt ist beidseits des Steges wenigstens ein elastisches Dichtungselement angeordnet, das den Zwischenraum zwischen Steg und Abschlussprofil dichtend ausfüllt. Aufgrund der Elastizität bzw. Kompressibilität des Dichtungselementes bzw. der Dichtungselemente ist weiterhin eine Verschiebung der Fensterbank gegenüber dem Abschlussprofil in einer Richtung parallel zur Längserstreckung der Fensterbank möglich.According to the invention, the window sill comprises at least one elastic sealing element that can be used as an expansion strip. The elastic sealing element prevents moisture from penetrating into the wall structure via the space between the end profile and the web of the window sill. At least one elastic sealing element is preferably arranged on both sides of the web, which sealingly fills the space between the web and the end profile. Due to the elasticity or compressibility of the sealing element or the sealing elements, a displacement of the window sill relative to the end profile in a direction parallel to the longitudinal extent of the window sill is also possible.

Ferner erfindungsgemäß ist das wenigstens eine elastische Dichtungselement am Steg oder am Abschlussprofil angeordnet und liegt bei aufgestecktem Abschlussprofil unter Vorspannung am Abschlussprofil und/oder am Steg an. Bevorzugt sind wenigstens zwei elastische Dichtungselemente beidseits des im Wesentlichen senkrecht zur Fensterbank stehenden Schenkels des Steges oder an der Innenseite der beiden parallelen Schenkel des vorzugsweise im Querschnitt U-förmig ausgebildeten Abschlussprofils angeordnet. Beim Aufstecken des Abschlussprofiles auf den Steg werden die beidseits angeordneten Dichtungselemente geringfügig zusammengedrückt, so dass eine Klemmverbindung zwischen Abschlussprofil und Steg realisiert wird. Die Klemmverbindung erleichtert die Montage der Fensterbank, da sie einem Lösen des Abschlussprofils vom Steg der Fensterbank entgegenwirkt.Furthermore, according to the invention, the at least one elastic sealing element is arranged on the web or on the end profile and, when the end profile is attached, bears against the end profile and / or on the web under prestress. At least two elastic sealing elements are preferably arranged on both sides of the leg of the web which is essentially 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 the end profile is slipped onto the web, the sealing elements arranged on both sides are slightly compressed, so that a clamp connection between End profile and web is realized. The clamp connection facilitates the installation of the window sill, since it counteracts the release of the end profile from the web of the window sill.

Um die Klemmverbindung zu bewirken, muss das elastische Dichtungselement mit Aufstecken des Abschlussprofil geringfügig zusammengedrückt werden. Dadurch wird zugleich die Dichtwirkung verbessert. Das Dichtungselement sollte bei aufgestecktem Abschlussprofil jedoch weiter komprimierbar sein, um eine Verschiebung der Fensterbank gegenüber dem Abschlussprofil in einer Richtung parallel zur Längserstreckung der Fensterbank zu ermöglichen. Dies gilt in entsprechender Weise für jedes weitere elastische Dichtungselement, das im Zwischenraum zwischen Abschlussprofil und Steg angeordnet ist.In order to effect the clamping connection, the elastic sealing element must be slightly compressed when the end profile is attached. This also improves the sealing effect. The sealing element should, however, be compressible further when the end profile is attached, in order to enable the window sill to be displaced relative to the end profile in a direction parallel to the longitudinal extension of the window sill. This applies in a corresponding manner to each additional elastic sealing element which is arranged in the space between the end profile and the web.

Vorzugsweise sind mehrere Dichtungselemente vorgesehen, die derart angeordnet sind, dass bei aufgestecktem Abschlussprofil beidseits des Steges jeweils wenigstens ein elastisches Dichtungselement zu liegen kommt. Dies ist unabhängig davon realisierbar, ob die Dichtungselemente an den parallelen Außenseiten des Steges oder an den parallelen Innenseiten des Abschlussprofils befestigt sind. Die bevorzugte Anordnung der Dichtungselemente beidseits des Steges ermöglicht sowohl eine Ausdehnung, als auch eine Verkürzung der Fensterbank. Eine Ausdehnung erfährt die Fensterbank beispielsweise bei längerer Sonneneinstrahlung. Sie verkürzt sich bei tiefen Außentemperaturen, insbesondere im Winter, oder, wenn nach längerer Sonneneinstrahlung die Temperaturen deutlich fallen. In diesen Fällen erweist sich der Einsatz der elastischen Dichtungselemente als Dehnungskeder als vorteilhaft, da sowohl eine Ausdehnung, als auch eine Verkürzung der Fensterbank über die elastischen Dichtungselemente in der Weise aufgenommen werden kann, dass die Längenänderung der Fensterbank im Wesentlichen spannungsfrei erfolgt.A plurality of sealing elements are preferably provided, which are arranged in such a way that at least one elastic sealing element comes to rest on both sides of the web when the end profile is attached. This can be implemented regardless 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 the sealing elements on both sides of the web enables both an expansion and a shortening of the window sill. The window sill expands, for example, with prolonged exposure to the sun. It is shorter at low outside temperatures, especially in winter, or when temperatures drop significantly after prolonged exposure to the sun. In these cases, the use of the elastic sealing elements as expansion strips proves to be advantageous, since both an expansion and a shortening of the window sill can be absorbed by the elastic sealing elements in such a way that the change in length of the window sill is essentially free of tension.

Gemäß einer ersten bevorzugten Ausführungsform der Erfindung ist das elastische Dichtungselement als Vollprofil ausgebildet und besteht aus Polyethylen-, Polyurethan-, Ethylen-Propylen-Dien-Monomer- oder Silikonschaum. Ein solches geschäumtes Vollprofil ist leicht zu komprimieren und gewährleistet aufgrund seiner geschlossenzelligen Struktur eine hinreichende Abdichtung des Zwischenraums zwischen dem Abschlussprofil und dem Steg gegen eindringende Feuchtigkeit. Gemäß einer alternativen Ausführungsform ist das elastische Dichtungselement als rundes, eliptisches, rechteckiges, faltenbalg- oder rautenförmiges Hohlkammerprofil ausgebildet und besteht vorzugsweise aus Silikon, Gummi, PVC oder einem thermoplastischen Elastomer. Bei Ausbildung des Dichtungselementes als Hohlkammerprofil sind ebenfalls die erforderliche Kompressibilität sowie die gewünschte Dichtwirkung gewährleistet.According to a first preferred embodiment of the invention, the elastic sealing element is designed as a solid profile and consists of polyethylene, polyurethane, Ethylene-propylene-diene monomer or silicone foam. Such a foamed full profile is easy to compress and, due to its closed-cell structure, ensures that the space between the end profile and the web is adequately sealed against penetrating moisture. According to an alternative embodiment, the elastic sealing element is designed as a round, elliptical, rectangular, bellows-shaped or diamond-shaped hollow chamber profile and is preferably made of silicone, rubber, PVC or a thermoplastic elastomer. When the sealing element is designed as a hollow chamber profile, the required compressibility and the desired sealing effect are also ensured.

Sofern der Einbau des Fensters im Bereich der Dämmebene einer Außenwandkonstruktion erfolgt, kommt auch die Fensterbank im Bereich der Dämmebene zu liegen. Die Kompressibilität des elastischen Dichtungselementes sollte daher auf die Kompressibilität des Dämmstoffes der Dämmebene abgestimmt werden, um zu vermeiden, dass die Längenänderungen vom Dämmstoff der Dämmebene anstelle des elastischen Dichtungselementes aufgenommen werden. Vorzugsweise ist daher der Werkstoff des elastischen Dichtungselementes derart gewählt, dass dieser leichter zu komprimieren ist als der Dämmstoff der Dämmebene. Im umgekehrten Fall können über das elastische Dichtungsprofil Druckkräfte auf das Abschlussprofil übertragen werden, welche dazu führen, dass das Abschlussprofil von der außenliegenden Putzschicht abreißt. Haben sich erst Risse gebildet, kann hierüber Feuchtigkeit in die Wandkonstruktion eindringen. Einer Rissbildung kann dadurch entgegen gewirkt werden, dass ein relativ weicher Dehnungskeder bzw. elastisches Dichtungselement verwendet wird. Auf diese Weise ist weitgehend sicher gestellt, dass der Anschluss der Fensterbank dauerhaft spannungsfrei bleibt.If the window is installed in the area of the insulation level of an external wall construction, the window sill also comes to lie in the area of the insulation level. The compressibility of the elastic sealing element should therefore be matched to the compressibility of the insulating material of the insulating layer in order to avoid that the changes in length are absorbed by the insulating material of the insulating layer instead of the elastic sealing element. The material of the elastic sealing element is therefore preferably selected such that it is easier to compress than the insulating material of the insulating plane. In the opposite case, compressive forces can be transmitted to the end profile via the elastic sealing profile, which lead to the end profile being torn off from the external plaster layer. Once cracks have formed, moisture can penetrate into the wall construction. The formation of cracks can be counteracted by using a relatively soft expansion strip or elastic sealing element. In this way, it is largely ensured that the connection to the window sill remains permanently tension-free.

Die vorstehend beschriebenen Vorteile eines relativ weichen Dehnungskeders kommen nicht nur bei Außenwandkonstruktionen zum Tragen, bei welchen die Fenster im Bereich der Dämmebene eingesetzt sind, sondern auch dann, wenn die tragende Wand Bestandteil der Fensterlaibung ist, d.h. die im Bereich der Fensterlaibung aufgetragenen Dämm- und/oder Putzschichten über die tragende Wand eine gewisse Abstützung erfahren.The above-described advantages of a relatively soft expansion strip come into play not only in external wall constructions in which the windows are used in the area of the insulation level, but also when the load-bearing wall is part of the The window reveal, ie the insulation and / or plaster layers applied in the area of the window reveal, experience a certain amount of support over the load-bearing wall.

Bevorzugte Ausführungsformen der Erfindung werden nachfolgend anhand der beiliegenden Zeichnungen näher erläutert. Diese zeigen:

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 in more detail below with reference to the accompanying drawings. These show:
Figure 1a
a schematic longitudinal section through a built-in first window sill according to the invention at normal temperatures,
Figure 1b
the windowsill of the Figure 1a after expansion due to strong sunlight,
Figure 2a
the windowsill of the Figure 1a ,
Figure 2b
the windowsill of the Figure 2a after a shortening due to a drop in temperature,
Figure 3
a schematic longitudinal section through a second window sill according to the invention with an attached end profile and
Figure 4
a schematic longitudinal section through a third window sill according to the invention with an attached end profile.

Ausführliche Beschreibung der ZeichnungenDetailed description of the drawings

Die in der Figur 1a schematisch dargestellte erste Ausführungsform einer erfindungsgemäßen Fensterbank 1 weist eine seitliche Aufkantung zur Ausbildung eines ersten Schenkels eines im Querschnitt T-förmigen Steges 4 auf. Zur Ausbildung des T-förmigen Querschnittprofils ist der erste Schenkel des Steges 4 mit einem parallel zur Fensterbank 1 ausgerichteten weiteren Schenkel verschweißt. Alternativ hierzu kann der Steg 4 als im Querschnitt T-förmiges Profil ausgebildet und nachträglich mit der Fensterbank verschweißt worden sein.The in the Figure 1a The schematically illustrated first embodiment of a window sill 1 according to the invention has a lateral edging for forming a first leg of a web 4 with a T-shaped cross-section. To form the T-shaped cross-sectional profile, the first leg of the web 4 is welded to a further leg aligned parallel to the window sill 1. As an alternative to this, the web 4 can be designed as a profile with a T-shaped cross-section and subsequently welded to the window sill.

Die in der Fig. la dargestellte einstückige Ausbildung des Steges 4 mit der Fensterbank 1 bietet das höchstmögliche Maß an Dichtheit, so dass kein Oberflächenwasser über den Fensterbankanschluss im Laibungsbereich in den Wandaufbau einzudringen vermag. Als ein weiterer Vorteil erweist sich die hohe Formstabilität der Fensterbank, so dass ein Kippen bzw. Schrägstellen des Steges 4 in Bezug auf die Fensterbank 1 nicht zu erwarten ist. Da der Steg 4 der Aufnahme eines Abschlussprofils 2 dient, ist durch die hohe Formstabilität auch eine dauerhaft exakte Ausrichtung des am Steg 4 anliegenden Abschlussprofils 2 sichergestellt. Vorliegend ist das Abschlussprofil 2 im Querschnitt U-förmig ausgebildet. Es weist zwei parallele Schenkel 2.1, 2.3 sowie einen senkrecht hierzu ausgerichteten Schenkel 2.2 auf, mit welchem das Abschlussprofil 2 auf dem parallel zur Fensterbank 1 ausgerichteten Schenkel des Steges 4 aufliegt.The one-piece design of the web 4 with the window sill 1 shown in FIG. 1 a offers the highest possible degree of tightness, so that no surface water can penetrate into the wall structure via the window sill connection in the reveal area. The high dimensional stability of the window sill proves to be a further advantage, so that tilting or inclination of the web 4 with respect to the window sill 1 is not to be expected. Since the web 4 is used to accommodate an end profile 2, the high dimensional stability also ensures a permanently exact alignment of the end profile 2 resting on the web 4. In the present case, the end profile 2 is U-shaped in cross section. It has two parallel legs 2.1, 2.3 as well as a leg 2.2 aligned perpendicular thereto, with which the end profile 2 rests on the leg of the web 4 aligned parallel to the window sill 1.

Der Schenkel 2.2 des Abschlussprofils 2 dient dem Anschluss der Fensterbank 1 an eine Fensterlaibung 3. Im Bereich der Fensterlaibung 3 sind auf eine tragende Außenwand 8 eine Dämmschicht 7 und hierauf eine aus Unter- und Oberputz bestehende Putzschicht 6 aufgebracht. Die mehrlagige Putzschicht 6 und die Dämmschicht 7 sind bis an das Abschlussprofil 2 herangeführt, so dass der auf dem Steg 4 aufliegende Schenkel 2.2 des Abschlussprofils 2 eine saubere Abschlusskante ausbildet. Dies setzt voraus, dass die Fensterbank 1 und das Abschlussprofil 2 vor dem Verputzen eingebaut werden. Das Abschlussprofil 2 kann dann mit eingeputzt werden. Nach Aushärten der Putzschicht 6 ist das Abschlussprofil 2 in seiner Lage fixiert.The leg 2.2 of the end profile 2 is used to connect the window sill 1 to a window reveal 3. In the area of the window reveal 3, an insulating layer 7 is applied to a load-bearing outer wall 8 and a plaster layer 6 consisting of a base and top plaster. The multilayer plaster layer 6 and the insulating layer 7 are brought up to the end profile 2, so that the leg 2.2 of the end profile 2 resting on the web 4 forms a clean end edge. This assumes that the Windowsill 1 and the end profile 2 are installed before plastering. The end profile 2 can then be plastered in. After the plaster layer 6 has hardened, the end profile 2 is fixed in its position.

Der Steg 4 ist vollständig im U-förmigen Querschnitt des Abschlussprofils 2 aufgenommen und zwar dergestalt, dass unter normalen (Klima-)Bedingungen der Steg 4 der Fensterbank 1 mittig in Bezug auf das U-förmige Abschlussprofil 2 zu liegen kommt. Dadurch, dass der als Auflage für das Abschlussprofil 2 dienende, parallel zur Fensterbank 1 ausgerichtete Schenkel des Steges 4 kürzer als der Schenkel 2.2 des Abschlussprofils 2 ausgebildet ist, ist eine Verschiebung der Fensterbank 1 gegenüber dem Abschlussprofil in eine Richtung parallel zur Längserstreckung der Fensterbank 1 möglich. Somit können Längenänderungen der Fensterbank 1 sowohl in Form einer Ausdehnung (siehe Pfeil A in Figur 1b), als auch in Form einer Verkürzung (siehe Pfeil V in Figur 2b), ausgeglichen werden. Eine Ausdehnung der Fensterbank 1 kann beispielsweise aufgrund längerer Sonneneinstrahlung erfolgen, wobei sich der Steg 4 zur Außenwand 8 hin bewegt. Thermisch bedingte Längenänderungen treten insbesondere bei Fensterbänken aus Aluminium auf. Ausgehend von einer Normaltemperatur von etwa 20°C kann sich eine Aluminiumfensterbank ohne weiteres auf 70°C erhitzen und in Abhängigkeit von ihrer Gesamtlänge eine Längenausdehnung von mehreren Millimetern erfahren. Beträgt die Gesamtlänge der Fensterbank beispielsweise 300 cm und steigt die Temperatur um 50°C, dehnt sich die Fensterbank um etwa 3,5 mm aus. Analog hierzu verringert sich die Gesamtlänge der Fensterbank 1 bei tiefen Außentemperaturen, insbesondere im Winter, oder, wenn nach längerer Sonneneinstrahlung die Temperatur stark abfällt. Bei einem Temperaturabfall von 20°C auf beispielsweise -10°C kann die Verkürzung der Fensterbank etwa 2 mm betragen.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 window sill 1 comes to lie centrally with respect to the U-shaped end profile 2. Because the leg of the web 4, which serves as a support for the end profile 2 and is aligned parallel to the window sill 1, is shorter than the leg 2.2 of the end profile 2, the window sill 1 is shifted relative to the end profile in a direction parallel to the longitudinal extent of the window sill 1 possible. Changes in the length of the window sill 1 can thus be made in the form of an expansion (see arrow A in Figure 1b ), as well as in the form of a shortening (see arrow V in Figure 2b ), be balanced. An expansion of the window sill 1 can take place, for example, due to prolonged exposure to sunlight, the web 4 moving towards the outer wall 8. Thermally induced changes in length occur particularly with window sills made of aluminum. Starting from a normal temperature of around 20 ° C, an aluminum window sill can easily heat up to 70 ° C and, depending on its overall length, experience a linear expansion of several millimeters. For example, if the total length of the window sill is 300 cm and the temperature rises by 50 ° C, the window sill expands by about 3.5 mm. Analogously to this, the total length of the window sill 1 is reduced at low outside temperatures, particularly in winter, or when the temperature drops sharply after prolonged exposure to the sun. If the temperature drops from 20 ° C to -10 ° C, for example, the shortening of the window sill can be about 2 mm.

Die Längenänderungen der Fensterbank 1 bei Temperaturanstieg und bei Temperaturabfall sind beispielhaft in den Figuren 1a, 1b sowie 2a, 2b dargestellt.The changes in length of the window sill 1 when the temperature rises and when the temperature falls are exemplified in FIG Figures 1a, 1b and 2a, 2b.

Die Querschnittsabmessungen des Steges 4 sowie des Abschlussprofils 2 sind bevorzugt auf das zu erwartende Maß der Ausdehnung bzw. Verkürzung der Fensterbank 1 abgestimmt. Somit ist sichergestellt, dass genügend Bewegungsfreiraum verbleibt. Zu berücksichtigende Faktoren bilden dabei die Gesamtlänge und der Werkstoff der Fensterbank sowie die zu erwartenden Temperaturen.The cross-sectional dimensions of the web 4 and of the end profile 2 are preferably matched to the expected extent of the expansion or shortening of the window sill 1. This ensures that there is enough freedom of movement. Factors to be considered are the overall length and material of the window sill as well as the temperatures to be expected.

Um ein Eindringen von Feuchtigkeit über den Zwischenraum zwischen dem Abschlussprofil 2 und dem Steg 4 der Fensterbank 1 in die Wandkonstruktion zu verhindern, ist beidseits des senkrecht zur Fensterbank 1 ausgerichteten Schenkels des Steges 4 jeweils ein elastisches Dichtungselement 5 angeordnet, das unter Vorspannung am Abschlussprofil 2 anliegt. Die Vorspannung ist jedoch derart gering gewählt, dass die elastischen Dichtungselemente 5 weiter komprimierbar sind, um eine Verschiebung der Fensterbank 1 gegenüber dem Abschlussprofil 2 zuzulassen. Vorliegend sind die elastischen Dichtungselemente 5 als Vollkörper ausgebildet und bestehen aus einem geschlossenzelligen und demnach nichtsaugenden Schaumwerkstoff. Ein Eindringen von Feuchtigkeit kann somit wirksam verhindert werden.In order to prevent moisture from penetrating into the wall structure via the space between the end profile 2 and the web 4 of the window sill 1, an elastic sealing element 5 is arranged on both sides of the leg of the web 4, which is oriented perpendicular to the window sill 1 is applied. However, the preload is selected to be so low that the elastic sealing elements 5 can be further compressed in order to allow the window sill 1 to be displaced relative to the end profile 2. In the present case, the elastic sealing elements 5 are designed as solid bodies and consist of a closed-cell and therefore non-absorbent foam material. Penetration of moisture can thus be effectively prevented.

Die Ausbildung des Steges 4 als im Querschnitt T-förmiges Profil weist den Vorteil auf, dass zum Einen eine planebene Auflagefläche für das Abschlussprofil 2 über den parallel zur Fensterbank 1 ausgerichteten Schenkel des Steges 4 geschaffen wird, zum Anderen ein ausreichend großer Zwischenraum zwischen dem Steg 4 und dem Abschlussprofil 2 verbleibt, um diesen mit einem elastischen Dichtungsmaterial zu füllen. Der Zwischenraum ist ausreichend groß bemessen, so dass anstelle eines Vollprofils auch ein Hohlprofil als elastisches Dichtungselement 5 eingesetzt werden kann, das unter Vorspannung dichtend am Abschlussprofil 2 und am Steg 4 anliegt.The formation of the web 4 as a cross-section T-shaped profile has the advantage that on the one hand a flat support surface for the end profile 2 is created over the leg of the web 4 aligned parallel to the window sill 1, and on the other hand a sufficiently large space between the web 4 and the end profile 2 remains in order 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 also be used as an elastic sealing element 5, which rests sealingly on the end profile 2 and on the web 4 under prestress.

Aus der Figur 3 geht eine Abwandlung einer erfindungsgemäßen Fensterbank 1 hervor, welche anstelle einer einstückigen Ausbildung des Steges 4 mit der Fensterbank 1 eine kraft- und/oder formschlüssige Verbindung des Steges 4 mit der Fensterbank 1 vorsieht. Gemäß der Ausführungsform der Figur 3 ist der Steg 4 im Querschnitt Doppel-T-förmig ausgebildet, wobei der auf der Fensterbank 1 aufliegende Schenkel eine Abkantung aufweist. Die kraft- und/oder formschlüssige Verbindung erfolgt vorliegend über eine Klebeverbindung 9, wobei der Steg 4 vorzugsweise derart auf die Fensterbank 1 aufgesetzt ist, dass die Abkantung des auf der Fensterbank 1 aufliegenden Schenkels die Seitenkante der Fensterbank 1 umgreift. Die Abkantung stabilisiert die Seitenkante der Fensterbank und führt somit zu einer Erhöhten Formstabilität des Verbundes aus Fensterbank 1 und Steg 4. Darüber hinaus entspricht der Aufbau der Fensterbank 1 dem der Fensterbank der Figuren 1 und 2.From the Figure 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 window sill 1 has a power and / or provides a form-fitting connection between the web 4 and the window sill 1. According to the embodiment of Figure 3 the web 4 is double-T-shaped in cross section, the leg resting on the window sill 1 having a bevel. In the present case, the non-positive and / or form-fitting connection takes place via an adhesive connection 9, the web 4 preferably being placed on the window sill 1 in such a way that the fold of the leg resting on the window sill 1 encompasses the side edge of the window sill 1. The fold stabilizes the side edge of the window sill and thus leads to increased dimensional stability of the composite of window sill 1 and web 4. In addition, the structure of the window sill 1 corresponds to that of the window sill Figures 1 and 2 .

Eine weitere Abwandlung geht aus der Figur 4 hervor, bei welcher der Steg 4 ebenfalls im Querschnitt im Wesentlichen Doppel-T-förmig ausgebildet ist und der auf der Fensterbank 1 aufliegende Schenkel des Steges 4 abgekantet ist. Die Abkantung des Schenkels bildet vorliegend eine Klemmlasche 10 aus, mit welcher der Steg 4 über die Seitenkante auf die Fensterbank 1 aufschiebbar ist. Die Klemmlasche 10 ist derart ausgebildet, dass sie beim Aufschieben des Steges 4 auf die Fensterbank 1 aufgebogen werden muss. Die aufgeschobene Klemmlasche 10 liegt demnach unter Vorspannung an der Unterseite der Fensterbank 1 an. Auf diese Weise wird eine kraft- und formschlüssige Verbindung bewirkt.Another variation comes from the Figure 4 in which the web 4 is also essentially double-T-shaped in cross-section and the leg of the web 4 resting on the window sill 1 is bevelled. In the present case, the fold of the leg forms a clamping strap 10 with which the web 4 can be pushed onto the window sill 1 over the side edge. The clamping tab 10 is designed in such a way that it has to be bent open when the web 4 is pushed onto the window sill 1. The pushed-on clamping lug 10 therefore rests against the underside of the window sill 1 under prestress. In this way, a non-positive and positive connection is achieved.

Vorteile der Ausführungsformen der Figuren 3 und 4 ergeben sich daraus, dass die nachträgliche Verbindung des Steges 4 mit der Fensterbank 1 den Ausgleich von Fertigungstoleranzen vor Ort an der Baustelle ermöglicht. Sowohl die Fensterbank 1 als auch die Außenwand 8 können Fertigungstoleranzen aufweisen, welche gegebenenfalls einen Ausgleich erfordern. Die in den Figuren 1 und 2 dargestellten Ausführungsformen einer erfindungsgemäßen Fensterbank weisen demgegenüber den Vorteil auf, dass eine erhöhte Formstabilität der Fensterbank 1 gegeben ist. Die Formstabilität der Fensterbank 1 sowie die Elastizität des Dichtungselementes 5 stellen sicher, dass es nicht zu einem Kippen des Abschlussprofils 2 und damit zum Abreißen des Abschlussprofils 2 von der Putzschicht 6 kommt. Die Bildung von Rissen bzw. Fugen kann somit verhindert oder zumindest deutlich verringert werden.Advantages of the embodiments of the Figures 3 and 4 result from the fact that the subsequent connection of the web 4 to the window sill 1 enables the compensation of manufacturing tolerances on site at the construction site. Both the window sill 1 and the outer wall 8 can have manufacturing tolerances which may require compensation. The ones in the Figures 1 and 2 In contrast, the illustrated embodiments of a window sill according to the invention have the advantage that there is increased dimensional stability of the window sill 1. The dimensional stability of the window sill 1 and the elasticity of the sealing element 5 ensure that the end profile 2 does not tilt and thus the end profile 2 does not tear from the plaster layer 6 comes. The formation of cracks or joints can thus be prevented or at least significantly reduced.

BezugszeichenlisteList of reference symbols

11
FensterbankWindowsill
22
Anschlussprofil
2.1 erster Schenkel
2.2 zweiter Schenkel
2.3 dritter SchenkelConnection profile
2.1 first leg
2.2 second leg
2.3 third leg
33
FensterlaibungWindow reveal
44th
Stegweb
55
DichtungselementSealing element
66
PutzschichtPlaster layer
77th
DämmschichtInsulation layer
88th
AußenwandOuter wall
99
KlebeverbindungAdhesive connection
1010
KlemmlascheClamp

Claims (8)

  1. Windowsill (1) with an attachable end profile (2) for connecting the windowsill to a window reveal (3), wherein the end profile (2) comprises in cross section at least one first leg (2.1) and also a second leg (2.2) arranged at an angle, preferably at a right angle to the first leg (2.1), wherein furthermore the windowsill (1) has at least one web (4), extending along one side edge for receiving the end profile (2) and designed in cross section as substantially T- or double-T-shaped, and is designed as one piece with the windowsill (1) or is connected in a force-fitting and/or form-fitting way to the windowsill (1), and wherein, when the end profile (2) is attached, at least one leg (2.2) of the end profile (2) contacts a leg of the web (4) aligned parallel to the windowsill surface, characterized in that
    the windowsill (1) comprises at least one elastic sealing element (5) suitable as an extension compensating element, which is arranged on the web (4) or on the end profile (2) and, when the end profile (2) is attached, abuts against the end profile (2) and/or the web (4) under pretension.
  2. Windowsill according to claim 1,
    characterized in that the force-fitting and/or form-fitting connection of the web (4) to the windowsill (1) is a clamp connection of an adhesive bonding.
  3. Windowsill according to claim 1,
    characterized in that the one-piece design of the web (4) with the windowsill (1) was produced by edging, welding, and/or soldering.
  4. Windowsill according to one of the preceding claims,
    characterized in that the windowsill (1) and the web (4) consist of the same material, wherein the material is preferably a plastic material or a metal, in particular aluminum or an aluminum alloy.
  5. Windowsill according to one of the preceding claims,
    characterized in that the end profile (2) has a U-shaped cross section.
  6. Windowsill according to one of the preceding claims,
    characterized in that the elastic sealing element (5) is compressible when the end profile (2) is attached, so that a displacement of the windowsill (1) with respect to the end profile (2) is possible in a direction parallel to the longitudinal extension of the windowsill (1).
  7. Windowsill according to one of the preceding claims,
    characterized in that the elastic sealing element (5) is designed as a solid profile, and consists of polyethylene foam, polyurethane foam, ethylene propylene diene monomer foam, or silicone foam.
  8. Windowsill according to one of the preceding claims,
    characterized in that the elastic sealing element (5) is designed as a round, elliptical, rectangular, concertina-like, or diamond-shaped hollow chamber profile, and preferably consists of silicone, rubber, PVC, or a thermoplastic elastomer.
EP12164798.6A 2011-04-19 2012-04-19 Window sill Active EP2514904B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011018251A DE102011018251A1 (en) 2011-04-19 2011-04-19 windowsill

Publications (3)

Publication Number Publication Date
EP2514904A2 EP2514904A2 (en) 2012-10-24
EP2514904A3 EP2514904A3 (en) 2014-08-20
EP2514904B1 true EP2514904B1 (en) 2020-08-19

Family

ID=46084799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12164798.6A Active EP2514904B1 (en) 2011-04-19 2012-04-19 Window sill

Country Status (2)

Country Link
EP (1) EP2514904B1 (en)
DE (1) DE102011018251A1 (en)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1913087U (en) * 1964-12-28 1965-04-01 Wutoeschingen Aluminium BORDER PROFILE WITH GUIDE RAIL FOR METAL WINDOW SILL.
DE1982021U (en) * 1967-12-23 1968-03-28 Andreas Dirr WINDOW SILL.
DE3231600C2 (en) 1982-08-25 1985-05-30 Aluminium-Werke Wutöschingen GmbH, 7896 Wutöschingen Aluminum window sill
DE3908604A1 (en) * 1989-03-16 1990-09-20 Bug Alutechnik WINDOW CLOSE
DE9300556U1 (en) * 1993-01-18 1993-04-01 Lilge, Helmut, 8360 Deggendorf Finish for window panels
DE9305776U1 (en) * 1993-04-16 1993-07-08 Erhardt, Gustav, 6967 Buchen windowsill
DE202004004816U1 (en) * 2004-03-27 2004-06-03 Corus Aluminium Profiltechnik Gmbh Border strip, especially for window sills, includes pocket for locating window sill web and channel for injecting sealant
DE102004015170A1 (en) * 2004-03-27 2005-10-20 Gutmann Hermann Werke Ag Connection element for the lateral connection of a window sill
DE202004019812U1 (en) * 2004-12-23 2005-02-24 Corus Aluminium Profiltechnik Gmbh Window sill facing, comprises cover strip containing sliding profile for compensating for thermal expansion and contraction of sill
DE202008004201U1 (en) 2008-03-26 2008-05-29 Sto Ag windowsill
DE202009013572U1 (en) * 2009-09-30 2010-02-04 Alsecco Gmbh & Co Kg Side closure element for a window sill and window sill with a lateral end element
DE202010015326U1 (en) * 2010-11-12 2011-01-20 Eurosill Gmbh & Co. Kg Wall assembly for metal window sills

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2514904A2 (en) 2012-10-24
DE102011018251A1 (en) 2012-10-25
EP2514904A3 (en) 2014-08-20

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