EP3848550A2 - Window with a ventilation duct - Google Patents

Abstract

A window which has at least the following features: a frame (1) composed of several frame profiles (1 '), a sash frame (2) which is movable relative to the frame (1) at least between a closed position and a ventilation position, with a frame rebate space (F) is formed between the frame profiles (1 ', 2') of the window frame (1) and the frame profiles (1 ', 2') of the casement (2), at least one in at least one of the frame profiles (1 ') of the window frame ( 1) or in at least one of the frame profiles (2 ') of the sash (2) formed ventilation duct (8) which has a first ventilation duct opening (9) and a second ventilation duct opening (10), the sash frame (2) and the window frame (1 ) are designed to close at least one of the ventilation duct openings (9, 10) in the closed position, and to release both ventilation duct openings (9, 10) of the at least one ventilation duct (8) in the ventilation position, with between hen the frame (2) and the sash frame (1) in the area of the frame rebate space in the open state, at least one sealing plane is formed, which is formed by at least one seal (18, 104, 105), which at least in the ventilation position on the frame or on the The sash frame and which is designed as a central and contact seal (18) which has a seal base (20) and at least one sealing section (22) which is pivotably attached to the seal base (20) and which is hingedly connected to the seal base (20), and which in any case in the area or areas in which a respective ventilation duct (8) is formed, at its free end with a contact sliding section (23) rests on the casement or on the frame.

Description

The invention relates to a window with a ventilation duct according to the preamble of claim 1 and a seal for such a window.

A generic window that enables sound-insulated ventilation in a tilted or rotated sash position is known per se, for example from US Pat DE 10 2016 115 422 . However, the generic construction has a relatively complicated structure.

In addition, the known construction requires relatively large actuation forces when closing the sash. It is particularly disadvantageous that the center seal of the window frame slides rather poorly on the insulating web of the sash frame. Another disadvantage to be mentioned is the relatively small opening width in the ventilation position. The opening width is limited, among other things, by the (short) insulating web of the sash as a sliding surface.

The invention is therefore intended to take a different approach and create an optimized window with a ventilation duct. In addition, an improved seal should also be implemented for such a window.

The invention achieves this object by the subject matter of claim 1. It also creates the central and abutment seal of claim 18 and the sealing corner piece of claim 19.

1. a) einen aus mehreren Rahmenprofilen zusammengesetzten Blendrahmen,
2. b) einen aus mehreren Rahmenprofilen zusammengesetzten Flügelrahmen, der wenigstens ein Flächenelement aufweist und der mindestens zwischen einer Schließstellung und einer Lüftungsstellung relativ zu dem Blendrahmen beweglich ist,
3. c) wobei ein umlaufender Rahmenfalzraum zwischen den Rahmenprofilen des Blendrahmens und den Rahmenprofilen des Flügelrahmens ausgebildet ist,
4. d) wenigstens einen in wenigstens einem der Rahmenprofile des Blendrahmens oder in wenigstens einem der Rahmenprofile des Flügelrahmens ausgebildeten Lüftungskanal, der eine erste Lüftungskanalöffnung und eine zweite Lüftungskanalöffnung aufweist,
5. e) wobei der Flügelrahmen und der Blendrahmen - zusammenwirkend - dazu ausgebildet sind, in der Schließstellung wenigstens eine der Lüftungskanalöffnungen zu verschließen, und in der Lüftungsstellung beide Lüftungskanalöffnungen des wenigstens einen Lüftungskanals freizugeben,
6. f) wobei zwischen dem Blendrahmen und dem Flügelrahmen im Bereich des Rahmenfalzraumes im Öffnungszustand wenigstens eine Dichtebene ausgebildet ist, welche von wenigstens einer Dichtung gebildet wird, welche zumindest in der Lüftungsstellung an dem Blendrahmen oder an dem Flügelrahmen anliegt, und welche als Mittel- und Anlagedichtung ausgebildet ist, welche eine Dichtungsbasis aufweist und wenigstens einen an der Dichtungsbasis schwenkbar befestigten Dichtabschnitt, der gelenkig mit der Dichtungsbasis verbunden ist, und der jedenfalls in dem oder den Bereichen, in denen ein jeweiliger Lüftungskanal ausgebildet ist, an seinem freien Ende mit einem Anlagegleitabschnitt an dem Flügelrahmen oder an dem Blendrahmen anliegt.

Such a window is created that has at least the following features:

1. a) a frame composed of several frame profiles,
2. b) a sash frame composed of several frame profiles, which has at least one surface element and which is movable relative to the frame at least between a closed position and a ventilation position,
3. c) wherein a circumferential frame rebate space is formed between the frame profiles of the window frame and the frame profiles of the casement,
4. d) at least one ventilation channel formed in at least one of the frame profiles of the window frame or in at least one of the frame profiles of the casement, which has a first ventilation channel opening and a second ventilation channel opening,
5. e) wherein the casement and the frame - cooperating - are designed to close at least one of the ventilation duct openings in the closed position and to release both ventilation duct openings of the at least one ventilation duct in the ventilation position,
6. f) wherein at least one sealing plane is formed between the frame and the sash in the area of the rebate space in the open state, which is formed by at least one seal, which at least in the ventilation position rests on the frame or on the sash, and which acts as a central and contact seal which has a sealing base and at least one sealing section which is pivotally attached to the sealing base and which is hingedly connected to the sealing base and which at least in the area or areas in which a respective ventilation duct is formed, at its free end with a contact sliding section the casement or the frame.

The concept of the window is not to be defined too narrowly in the context of this document. It comprises elements with a frame and a sash frame that is movable relative to it. The frame can be designed all around or not be designed like a door. In the sense of this document, a door is therefore also a window. The window can be built into a wall opening of a wall or wall of a building. However, it can also be designed as part of a facade or can be built into such a facade. The frame itself can therefore also form part of a facade structure. If the sealing base is fixed on the frame, the contact sliding section rests in the ventilation position on the corresponding frame on the other side of the fold between the frame and sash, that is, on the sash. If, on the other hand, the sealing base is formed on the sash, the contact sliding section rests correspondingly on the sash in the ventilation position.

It is thus provided that a seal, which comes to rest in the open or ventilation position and possibly also in the closed position of the window, is designed as a central and contact seal. This central and system seal can in turn advantageously be designed to subdivide the frame rebate space into at least two frame rebate space sections so that air in the ventilation position between the two frame rebate space sections can essentially only be exchanged through the ventilation duct, the center seal advantageously having the seal base and the at least one sealing section which is pivotably attached to the sealing base and which is articulated to the sealing base, the sealing section in any case in the area or areas in which a respective Ventilation channel is formed, in the ventilation position rests at its free end with the contact sliding section on the contact sliding strip. Two or more such center seals can also be provided.

In this way, the required multifunctionality of the central and system seal for closing the fold in the ventilation position and preferably also in the closed position can be implemented with a relatively simple seal, which also tightly closes the gap but not the opening and closing process due to its advantageous design unnecessarily difficult.

Thus, it is preferably provided that the central and system seals are advantageously designed to form the sealing plane remaining in the frame rebate space in the ventilation position and to subdivide the frame rebate space into two frame rebate space sections, so that air in the ventilation position between the two frame rebate space sections essentially only passes through the Ventilation duct can be exchanged.

It can also be advantageously provided that the center and system seal is attached to the frame and is in particular in the ventilation position in contact with the sash or that the center and system seal is attached to the sash and in particular in the ventilation position in contact to the frame.

It is advantageous if one or both of the two sections of the seal have a hollow chamber. It is particularly advantageous if the one or more hollow chambers each form double-web joint areas. Because in this way, on the one hand, sufficient stability of the respective seal can be ensured and, on the other hand, sufficient articulated flexibility when opening or closing. In particular, it can also be ensured in this way that the central and contact seals form a combined sliding and rolling seal, which is designed for superimposed sliding and rolling when the sash is opened or closed.

In addition, the sound insulation of the seal is improved.

For this purpose, it can further be provided that one or both walls of the two hollow chambers each have one or more constrictions, which in a simple manner result in a joint-like behavior of the respective hollow chamber and nevertheless, do not reduce the sealing force too much due to the double-walled design chosen due to the hollow chambers.

It can also be advantageously provided to optimize the sealing in corner areas of the window to provide at least one sealing corner piece, which has two legs that are angled to one another and connected via a corner area, each of which has an attachment surface to which the respective central and abutment seals can be attached. To reduce stresses in the corner areas, it can further be provided that the width of the two legs decreases from the ends towards the corner.

A central and system seal is also created, which is characterized in that it has one or more of the features related to the central and system seal in the preceding claims.

One or two of the sealing planes can also be formed by one or more stop seals between the frame and the casement. These sealing levels only exist when the sash is closed. If the sash is opened, the window is moved into its ventilation position so that air can be exchanged through these open sealing levels and the ventilation duct between the rooms, which the window in the installed state, i.e. usually between inside and outside, can be exchanged.

It can advantageously be provided that the contact slide strip is attached to the side on and / or in a corner area of the respective corresponding sash profile. It can also be advantageously provided that the center seal is designed as a lip seal with one or more sealing lips, each of which is designed to be flexible.

According to a further option of the invention, it can be provided that the shape, surface and / or material of the contact slide strip and the contact slide section are coordinated with one another and correspond to one another.

It is preferably provided that the central and contact seal is attached to the frame and the contact slide strip is attached to the casement. It can expediently be provided that the contact slide strip is mounted laterally on and / or in a corner area of the respective corresponding sash profile. So it can be provided that the contact slide strip with one of its ends on a metal shell of the sash profile on the side of an insulating web of the Sash profile is set. Because in this otherwise usually unused area of the sash, the means to be provided for fixing the contact sealing strip, such as a groove or the like, can be designed and accommodated.

It is advantageously provided that the at least one central and contact seal rests on the contact slide strip both in the ventilation state and in the closed state. If two center seals are provided, one of the two center seals is expediently designed in such a way and the other in such a way that it only rests on the contact slide bar in the closed position, but is spaced from it in the ventilation position, so that access to the ventilation duct is released.

It can further advantageously be provided that the one or at least one of the central and contact seals is designed as a lip seal with one or more sealing lips, which are each designed to be flexible. Because in this way, the flexible sealing lips can be used to rest on the contact slide strip, which accordingly does not or hardly hinder the opening movement or closing movement of the sash.

It can preferably be provided that the one or one of the central and system seals in the assembled state essentially only or only in a linear contact area rests on an abutment (usually the casement, when the seal is attached to the frame), the The width of the linear contact area is preferably 2-4 mm.

It is particularly advantageous that the shape, surface and / or material of the contact slide strip and the contact slide section can or are coordinated with one another and correspond to one another. In this way, the materials can be coordinated with one another in such a way that the seal with its contact sliding section can slide easily along the contact sliding strip. This is achieved, for example, when the contact slide strip is made entirely or in sections of metal, in particular an aluminum alloy, and the contact slide section is made of an elastomer. The contact sliding strip can also consist of an aluminum alloy in sections and a plastic in sections.

In one variant, the sliding seal can preferably also have a roughened surface structure on the sliding side. The contact sliding strip can correspondingly have a sliding coating. The surface structure can also be designed the other way around. It can therefore be provided that the Contact sliding section has a roughened surface structure on the sliding side and / or that the contact sliding bar has a sliding coating or that the contact sliding bar has a roughened surface structure on the sliding side and / or that the contact sliding section has a sliding coating.

According to a further advantageous option it can be provided that one of the ends of the contact slide strip extends up to an edge or just up to an edge (ie up to less than 10 mm in front of the edge) of the frame profile of the sash on which it is fixed is.

The attachment of the sliding strip to the frame profile (the casement or window frame) can be done in a wide variety of ways, for example by screwing, riveting, clipping, gluing.

According to a further option, it can advantageously be provided that abutting contact strips of the casement are connected to one another via corner connector-contact sliding pieces. In this way, a circumferential "sliding frame" can be formed on the casement (or window frame), which also ensures good sealing of the ventilation duct in these corner areas

In the context of this invention, the frame profiles can also have multiple shells. For example, they can have two metal shells and an insulating bar in between, but they can also have a metal shell and a plastic shell. They can, however, also have a five-shell structure or also as plastic profiles that are not multi-shell or single-shell, and these can optionally have reinforcements or the like.

According to one variant, it can advantageously be provided that all of the multi-chamber profiles of the window frame and / or of the casement frame consist entirely or essentially entirely of plastic.

As the stop seals and / or the central and contact seals, seals are preferably used in each case, which are inserted and held in holding grooves. Such seals are relatively inexpensive and, above all, easy to assemble. They can be laid all around without having to be cut in the corners. Due to the arrangement in retaining grooves, the seals can be easily replaced. The seals can preferably also be welded to one another.

Small, thin-walled seals offer little resistance to the seal stops. On top of that, they are not so prone to tolerance. As a result, the operating forces of the element are advantageously minimized.

The stop seals (inside / outside) and the center seal are preferably designed circumferentially, i.e. on four sides of the frame, while the sliding seal / sliding sealing lip (separate or in one piece with the center seal) only on one side (opposite the tilting axis) or preferably on three sides ( except on the tilt axis) is arranged.

The central seal and the contact seal can be designed as a lip seal with one or more sealing lips, each of which is relatively thin and flexible. A large-volume, multi-chamber central seal is advantageously not necessary in this way.

The seals can advantageously be made from a weldable TPE or weldable EPDM or silicone. In this way, profiles with inserted seals can be welded to form a frame at the same time. The sliding seal is multi-articulated and has a curved sliding surface which, together with the contact sliding strip attached to the frame, forms a particularly favorable friction pairing. The surface structures and the material combination are important to achieve an optimal result.

In order to improve the forces occurring (within the seal and in particular the operating forces of the sash) and the abrasion of the seal not only through the geometry of the seal, special material combinations of the "sliding partners" are provided in a preferred embodiment.

Silicone is preferred as the sealing material because this material offers high restoring forces, is easy to manufacture and process, and is very robust.

In order to improve the sliding properties, the seals are preferably surface treated or given a special surface layer.

Silicone seals are "LFS treated"; so-called LFS Treatment (BIW information attached). The coefficient of friction z. B. on a normal insulating bar made of PA 66 GF 25 is only 0.21 µ. [The sliding or stop bar will probably be made from this material, PA 66 GF 25. Design of the seal = LFS silicone].

A bonded varnish is preferably applied to EPDM seals. This lubricating varnish can be described as "normal" varnish from the automotive sector, which covers the surface homogenizes and makes it smoother. Coefficients of friction with a coated seal and a sliding partner made of PA 66 GF 25 are 0.2-0.6 µ, depending on the paint.

TPE seals are preferably surface treated according to the principle described in our application 35525DE. A PP layer is then coextruded in an extrusion process and then pulled off. The resulting surface structure is particularly slippery (see DE 10 2018 124 170 A1).

A relatively small opening width (hardly noticeable when actuated) results in the prior art mentioned at the beginning due to the closure means, the insulating web. This has only a limited length. In the preferred construction according to the invention, the central and contact seal, as a sliding sealing lip, closes the gap between the frame and the casement - possibly up to the outer profile edge of the sash. This achieves a larger opening width ("W"). Depending on the profile width ("B"), 50 to 80 mm are preferably achieved. The geometry of the sliding seal, in particular the length of the sealing lip, is also decisive. Overall, therefore, even greater widths are possible. A width of 55 to 65 mm is particularly preferred. The formula for a maximum opening width for sound-insulated ventilation could be assumed to be Wmax. = B - 25 mm.

According to a variant that is structurally easy to implement and also in combination with further independent advantageous invention, it can be provided that the one or more ventilation ducts is / are each formed in a ventilation cassette that is / are inserted into the frame or casement. In this way, the formation of the ventilation duct is significantly simplified because it does not have to be laboriously formed directly in the hollow chamber profiles. Rather, it is sufficient to provide or form a recess there and then insert the preassembled ventilation cassette into the recess, e.g. to snap it into place or clamp it.

In this case, the respective ventilation cassette can be inserted in a simple manner and preferably not visible to the outside in the closed position into a recess of the respective frame profile or the respective sash profile facing the frame rebate space.

It can furthermore advantageously be provided that the respective ventilation cassette has the ventilation duct openings and that these are aligned with the frame rebate space. Provision can particularly advantageously be made for the ventilation duct openings to lie completely in the frame rebate space between the stop seals in the closed state. This does not change the external appearance of the window. The preferred design remains. In addition, the Ventilation cassettes can be changed very easily in this way. This is required approximately annually in order to meet the requirements for purity (dust, insects, etc.). No specialist is required to replace them.

According to a variant, it can be provided that a component adapted to the one or more of their adjacent seals is provided by the contact slide strip. The shape, surface and material of the contact sliding strip can be matched to the one or more seals, so that an optimal sliding and / or rolling process is achieved. This reduces the operating forces at the window to a minimum.

In this case, it can preferably be provided that the contact slide strip is intended exclusively for the contact of the (sliding) seal arranged on the opposite frame and does not take on any other static function of the sash frame. It is therefore not an integral strip of the casement or frame that makes a significant contribution to its statics or influences it, as is the case with an insulating strip that connects two metal shells. It is true that the contact sliding strip influences the closing and opening forces when the sash is closed and opened, since a corresponding sliding seal is preferably in contact with it and, if necessary, can slide during the opening and closing movement. But this is also one of its tasks and one of its advantages, to which it can be specially adapted, unlike strips or profiles that primarily serve other purposes.

It can advantageously be provided that the contact slide strip has an elongated, web-like, in particular elongated arc-like shape with two ends, one of the ends being fixed to the casement or the frame and the other free end protruding into the rebate space. In this way, an additional strip is created for the frame profiles actually present on the sash frame (or the blind frame), which can preferably be designed exclusively and thus optimally for the task as a particularly well-suited system for the one or more seals of the corresponding frame - blind frame or Sash frame - to serve to close the ventilation duct at least in the opening and ventilation position of the sash frame relative to the frame. However, this is only an advantageous option that is particularly suitable for use on aluminum-plastic frame profiles. The contact slide bar can also have a different shape.

Advantageous refinements of the invention can be found in the remaining subclaims.

• Fig. 1 in a) und b) je einen Schnitt durch einen beispielsweise im Einbauzustand oberen horizontal verlaufenden Abschnitt eines ersten erfindungsgemäßen Fensters, wobei das Fenster in a) in einer Geschlossen- bzw. Schließstellung und in b) in einer Lüftungsstellung dargestellt ist und eine Mittel- und Anlagedichtung aufweist und in c) eine weitere Variante eines erfindungsgemäßen Fensters;
• Fig. 2 eine Variante einer Mitteldichtung zum Einsetzen in einen mittleren Bereich eines Falzes zwischen einem Flügel- und einem Blendrahmen eines Lüftungsfensters, das ansonsten beispielsweise nach Art der Fig. 1a) oder c) oder anders ausgestaltet sein kann;
• Fig. 3 in a) und b) je eine schnittartige Ansicht eines Abschnitts eines weiteren ersten erfindungsgemäßen Fensters mit einer weiteren Ausführungsform einer Mitteldichtung, wobei das Fenster in a) in einer Geschlossen- bzw. Schließstellung und in b) in einer Lüftungsstellung dargestellt ist;
• Fig. 4 in a) bis c) je eine schnittartige Ansicht eines Abschnitts eines weiteren ersten erfindungsgemäßen Fensters mit einer weiteren Ausführungsform einer Mitteldichtung, wobei das Fenster in aus a) über b) bis c) immer weiter von einer Lüftungsstellung in Geschlossen- bzw. Schließstellung bewegt wird;
• Fig. 5 in a) und b) Schnittansichten weiteren Varianten von Mittel- und Anlagedichtungen zum Einsetzen in einen mittleren Bereich eines Falzes zwischen einem Flügel- und einem Blendrahmen eines Lüftungsfensters, das ansonsten beispielsweise nach Art der Fig. 1 ausgestaltet sein kann und in c) und d) das Verhalten der Mittel- und Anlagedichtung aus b) einmal in einem Geschlossenzustand eines Fensters und einmal im Offenzustand eines Fensters, wobei der Lüftungskanal vereinfacht hier nicht dargestellt ist;
• Fig. 6 eine schnittartige Ansicht eines Abschnitts eines weiteren ersten erfindungsgemäßen Fensters mit einer weiteren Ausführungsform einer Mitteldichtung, wobei das Fenster in einer Geschlossen- bzw. Schließstellung dargestellt ist; und
• Fig. 7 und 8 a) bis d) verschiedene Ansichten eines Dichtungseckstücks; und
• Fig. 9 in a) und b) je einen Schnitt durch einen beispielsweise im Einbauzustand oberen horizontal verlaufenden Abschnitt eines weiteren erfindungsgemäßen Fensters, wobei das Fenster in a) in einer Geschlossen- bzw. Schließstellung und in b) in einer Lüftungsstellung dargestellt ist.

The invention is described in more detail below on the basis of exemplary embodiments with reference to the drawing. The invention is not restricted to these exemplary embodiments, but can also be implemented in a different literal sense or in a different way. Show it:

• Fig. 1 in a) and b) each a section through a horizontally extending section of a first window according to the invention, for example in the installed state, the window being shown in a) in a closed or closed position and in b) in a ventilation position and a central and Has system seal and in c) a further variant of a window according to the invention;
• Fig. 2 a variant of a center seal for insertion in a central area of a fold between a sash and a frame of a ventilation window, which is otherwise, for example, in the manner of Fig. 1a ) or c) or can be designed differently;
• Fig. 3 in a) and b) each a sectional view of a section of a further first window according to the invention with a further embodiment of a center seal, the window being shown in a) in a closed or closed position and in b) in a ventilation position;
• Fig. 4 in a) to c) each a sectional view of a section of a further first window according to the invention with a further embodiment of a central seal, the window in a) being moved further and further from a ventilation position to the closed or closed position in a) via b) to c) ;
• Fig. 5 in a) and b) sectional views of further variants of central and system seals for insertion in a central area of a fold between a sash and a frame of a ventilation window, which is otherwise, for example, in the manner of Fig. 1 can be configured and in c) and d) the behavior of the central and system seal from b) once in a closed state of a window and once in the open state of a window, the ventilation duct not being shown here in a simplified manner;
• Fig. 6 a sectional view of a portion of a further first window according to the invention with a further embodiment of a center seal, the window being shown in a closed or closed position; and
• Fig. 7 and 8 a) to d) different views of a sealing corner piece; and
• Fig. 9 in a) and b) each a section through a horizontally extending section of a further window according to the invention, for example in the installed state, the window being shown in a) in a closed or closed position and in b) in a ventilation position.

Various exemplary embodiments are described in the following description of the figures. The individual features of these exemplary embodiments can advantageously be used in combination with the respective further features of the exemplary embodiments. However, they can also be combined with other exemplary embodiments shown or not shown and are also suitable in each case as advantageous configurations of the subject matter described in one or more of the main claims and subclaims.

Fig. 1 shows a portion of a window. This window has a peripheral frame 1. This is composed of several frame profiles 1 'to form a frame shape, in particular a rectangular shape.

On the frame 1 a relative to the frame 1 movable sash is arranged. The sash preferably has a circumferentially closed sash frame 2 and a surface element 3, such as a pane, inserted into the sash frame 2 and received by it. The sash frame 2 is composed of several sash frame profiles 2 'to form a frame shape, in particular a rectangular shape.

The frame profiles 1 'and / or the sash profile 2' can be designed as multi-chamber hollow profiles.

The frame profiles can be designed as plastic profiles. But they can also be designed as so-called composite profiles (not shown). Then they usually consist of one or more metal profiles - also referred to synonymously here as metal shells - and one or more insulating bars. A construction is preferred in which two metal profile planes are connected to one another via an insulating web, which as a rule consists of plastic. However, other, further designs are also conceivable, in particular designs with a metal profile plane and an insulating profile plane made of plastic and designs with three metal profile planes and two insulating profile planes.

Between the frame 1 and the casement 2 or their frame profiles 1 ', 2', there is preferably a circumferential one in the respective exemplary embodiments Frame rebate space F formed. This frame rebate space F essentially extends between the outer circumference of the casement 2 and the inner circumference of the window frame 1.

The respective window of the Fig. 1 serves to be able to close and open a room opening of a building (not shown here), whereby a room I (for example an area surrounding a building) is separated from a room II (for example an interior of the building).

In the following, the terms "frame profile 1"'and"frame1" as well as "sash profile 2'" and "sash 2" are also used interchangeably. This is because the means and configurations discussed below can each preferably be configured circumferentially or in sections on the window frame 1 or on the casement frame 2. They can only be formed on one of the corresponding frame profiles of the casement 2 and the window frame 1 (e.g. on the frame profiles opposite a hinge axis) or on several of the corresponding frame profiles of the casement 2 and the window frame 1. At the perpendicular to the Fig. 1b Running sides of the window frame also form corresponding gaps in the ventilation position, but these gaps do not have a constant width when they are pivoted open. Nevertheless, in addition to improving the ventilation effect, ventilation ducts 8 of the type on each of these sides can also be used Fig. 1a and 1b also be trained.

The sash frame 2 can - preferably to one side or to an adjoining room II - have a contact web 4 with which it rests in the closed position on the frame 1 directly or via a stop seal 5 attached to the sash frame 2. Similarly, preferably to the other side or to the other adjoining room I, the frame 1 can have a contact web 6 in which it rests in the closed position on the window frame 1 directly or via a stop seal 7 attached to the contact web 6. In this way, a gap SII and a gap SI between the frame rebate space F and the space I or II are tightly closed.

It is provided that at least in the frame 1 or in the casement 2 - here in the frame 1 - a ventilation duct 8 (dashed lines) is formed, which has a first ventilation duct opening 9 and a second ventilation duct opening 10. It is preferably provided that the ventilation duct openings 9 and 10 open into the frame rebate area F. The ventilation duct 8 can have a U-shape.

To Fig. 1 it is further provided that at least the hollow profile or profiles of the window frame 1 or the sash frame 2, in which the ventilation duct 8 is formed, are formed as multi-chamber hollow profiles made of plastic.

These multi-chamber hollow profiles made of plastic preferably have three or more hollow chambers H1, H2, ... between the room side I and the room II. According to the embodiment of Fig. 1 seven hollow chambers H1 to H7 are provided between space I and space II ("from inside to outside"). Further hollow chambers can also be formed perpendicular to the direction I-II, in particular in the area of the contact webs. These measures ensure, in each case and in combination, very good sound insulation properties and heat insulation properties. The partition walls between the hollow chambers in the interior of the profiles are preferably thinner than the outer walls, in particular towards space I and space II.

One or more further hollow chambers H8, H9, H10, H11 can also be provided. One or more of these further hollow chambers H8, H9 can advantageously be provided in the respective contact web 4 or 6. These measures improve the soundproofing and the thermal insulation, each or together.

It can advantageously be provided that all the hollow profiles of the window frame 1 or the sash frame 2 are designed as multi-chamber hollow profiles made of plastic.

A wide variety of plastics are suitable as the material. The plastic is particularly preferably a PVC. It can also be provided that one or more of the multi-chamber hollow profiles made of plastic of the window frame 1 and / or one or more of the multi-chamber hollow profiles made of plastic of the sash frame 2 has / have at least one reinforcement reinforcement 11, 12.

The respective reinforcing reinforcement 11, 12 can consist of a different material than the multi-chamber hollow profile made of plastic, for example a metal, in particular steel and a metal profile, for example a metal strip or metal plate or the like. However, it can also be designed as reinforcement reinforcement made from another plastic, for example from a glass fiber reinforced plastic.

The multi-chamber profiles then preferably have a continuous plastic outer wall towards a first room side I and preferably have a continuous plastic outer wall towards a second room side II.

It is further preferred that the ventilation duct 8 is formed in a recess 13, in particular in a milled recess that is formed in the frame 1 or the casement 2 starting from the frame rebate space.

It can further advantageously be provided that the ventilation duct 8 is formed in a ventilation cassette 14 which is inserted into the recess 13, in particular into the cutout - in the frame 1 or the casement 2. Several of these ventilation cassettes 14 can also be provided per frame profile or on several sides of the frame (not shown). The ventilation duct 8 can thus be formed simply in only one or in several of the profiles of the surrounding window frame 1 or the sash frame 2.

It can preferably be provided that the respective ventilation cassette 14 has a channel-like or trough-like base element 15. It can also be provided that the respective ventilation cassette 14 has a cover 16.

The cover 16 is preferably oriented towards the frame rebate area F.

A central and contact seal 18, which extends into the frame rebate space F, is preferably formed on the frame profile. The central and contact seal 18 can be attached to the ventilation cassette 14, in particular to the cover 16. For this purpose, it can be provided that a fastening means, in particular an undercut groove 17, for the central and contact seal 18 is formed on the ventilation cassette 14, in particular on the cover 16.

The center and abutment seal 18 may have a seal base 20 with a seal foot 21 inserted into the groove. The seal 18 can furthermore have a sealing section 22 that is pivotably attached to the seal base 20. This can be designed as a single sealing lip ( Fig.1a and 1b ) or as a combination of two or more sealing lips ( Figures 9a and b ). The sealing section 22 can in particular have a sealing lip which is designed to be curved in itself and / or again has a hinge section so that it is divided into two lip areas that are movable relative to one another and that connect to form a longer lip.

It is particularly advantageous if the sealing section 22 can be pivoted relative to the sealing base 21 and that it is so long that it can be in contact with the sash frame 2. It rests there preferably with an end section. This end section can be arcuate.

The sealing section 22 can have an abutment sliding section 23 as an end section, which rests on the corresponding frame profile, here the sash profile, during relative movements between the frame 1 and the sash frame 2 and can slide well. This results in a harmonious, easy opening movement that is not significantly hindered by the adjacent sealing surface.

The contact sliding section 23 is preferably provided on the central and contact seal where a ventilation duct 8 is also provided in the respective frame profile. This can be on one side of the window frame 1 or casement 2 or on several sides, preferably on three sides. If it is a tilt window, preferably no ventilation duct is formed on the side on which the tilt axis is located. The contact sliding section 23 can be dispensed with here.

It is particularly advantageous that the sealing section 22 is preferably so long that it initially remains in contact with the sash frame 2 over a certain opening angle when the sash is opened, or is or comes into contact with the sash frame 2 in a ventilation position to be explained below so that it divides the frame rebate space F in the ventilation position into two areas, between which an exchange of air essentially only takes place via the ventilation duct 8.

The central and system seal 18 thus divides the frame rebate space F into a first and a second area FI, FII (corresponding to the orientation to the spaces I and II), between which an exchange of air is only possible via the ventilation duct 8 formed in the frame 1.

Alternatively, when the ventilation duct 8 is arranged in the window frame 1, the central and contact seal is fastened to the casement frame 2 and extends as far as the window frame 1. In this case, too, the sealing section 22 should preferably be long enough that, when the sash is opened, it initially remains in contact with the window frame 1 over a certain opening angle, or is or comes into contact with the window frame 1 in a ventilation position to be explained below, so that it has the frame rebate space F in the Ventilation position divided into two areas, between which an exchange of air essentially only takes place via the ventilation duct 8.

It should be noted at this point that the arrangement can also be "completely" reversed, in which case the ventilation duct is located in the sash frame 2. The arrangement of the central and contact seal 18 can then take place from the sash frame 2 to the frame 1 or vice versa.

In the ventilation position L the Fig. 1b the sash was moved into an open position relative to the frame 1, in particular pivoted and / or shifted. This open position is a ventilation position. It can - but this is not mandatory - correspond to the maximum attainable position when tilting or rotating or the like.

The columns SI and SII are open in this position, since the stop seals 5 and 7 are no longer in contact with the frame 1 or sash frame 2. The central and contact seal 18 is still in contact with the sash frame 2. The sash is still partially within the scope defined by the frame 2. Since the central and system seal 18 blocks the direct transition between the rooms FI and FII, an exchange of air between these rooms FI and FII and thus also an exchange of air between the rooms I and II can only take place through the ventilation duct. This provides a very advantageous combination of a ventilation and a sound insulation effect.

For example, if room I is the surrounding area of a building and room II is an interior space II of the building, air can flow into interior space I through gap SI, frame rebate space section FI, ventilation duct 8, frame rebate space section FII and gap SII. The sound is advantageously insulated, in particular, by deflecting the direction of the ventilation duct.

The air flowing through should therefore preferably have to change direction once or several times within the ventilation duct. This has a beneficial effect on the sound insulation.

The ventilation duct 8 has the first ventilation duct opening 9 and the second ventilation duct opening 10. These two ventilation duct openings 9, 10 can be formed in the ventilation cassette 14. The two ventilation duct openings 9, 10 are preferably formed in the cover 16.

It can further advantageously be provided that one or, particularly preferably, both ventilation duct openings 9, 10 are oriented towards the frame rebate space F.

Inside the ventilation cassette 14, at least one wall 19 can be formed which divides the ventilation cassette interior into sections. This wall 19 can have at least one passage 19a. One of the ventilation duct openings 9, 10 is then located in one of the sections.

In a preferred embodiment, the ventilation duct 8 runs in an approximately U-shape within the ventilation cassette 14 (or even without a ventilation cassette). It extends from the first ventilation duct opening 9 approximately parallel to the surface element 3 into the ventilation cassette 14, then runs approximately perpendicular to the surface element 3, extends there through the passage 19a of the wall 19 and again runs approximately parallel to the surface element up to the ventilation duct opening 10 the direction of the air flowing through changes several times. This insulates or prevents the passage of sound from room I to room II and vice versa. Nevertheless, an air flow for ventilation can pass from room I to room II.

The ventilation cassette 15 can also in the embodiment of FIG Fig. 3 be provided, although this is not shown. It then becomes analogous to Fig. 1 inserted into a chamber, in particular a cutout of the window frame. The ventilation duct can, however, also be designed directly as a channel-like milled recess in the frame or it can be delimited by channel-like elements which are inserted into these milled recesses.

It can also be provided that a contact sliding strip 24 is arranged on the casement frame 2 or on its casement frame profiles 2 ', on which a ventilation duct 8 is also provided. The central and contact seal 18 can then rest against this in the ventilation position L. The contact slide strip 24 can alternatively also be designed in such a way that the central and contact seal 18 also lies against the contact slide strip in the closed position.

It can advantageously be provided that the contact slide strip 24 is provided relatively far to the side and / or in a corner area of the respective casement profile 2 '. This corner area is preferably that corner area which is closest to the corresponding frame profile 1 'in the opening and ventilation position. For example, the contact slide strip can lie laterally outside an area which is defined by the inner and outer edge planes of the insulating glass pane. This is for example at Fig. 1 the case. In Figure 1c if this is also the case, just is here the contact sliding strip is preferably attached to one of the metal profiles, in particular to one of the aluminum profiles of this construction.

The contact slide strip 24 can also extend in the rebate space to such an extent that the central and contact seal 18 also lies against it in the closed state.

In this way, a relatively large opening width can be achieved in each case particularly advantageously in which air can essentially only be exchanged between space I and space II via the ventilation duct 8.

The abutment slide bar 24 can be made of metal or some other material such as plastic. In addition, it can itself have at least one hollow chamber.

The contact slide strip 24 can also advantageously be designed as an attachment strip which is fixed with a fastening, for example a tongue and groove connection, on the respective sash profile 2 '.

The frame profiles, in particular the outer walls to the rooms I and II are according to the embodiment of Fig. 1 formed from a plastic material, preferably PVC. They are preferably made entirely of plastic - possibly with the exception of internal reinforcement profiles or reinforcement reinforcements. They can be designed in one piece, in particular if they are made of plastic.

The outer walls of the hollow chamber profiles made of plastic preferably have a thickness of 2-4 mm, while the thickness of the partition walls forming hollow chambers H1-H7 can be 1-2 mm.

In a preferred embodiment, further reinforcement reinforcements 10, 11 made of metal are optionally arranged in the hollow chambers for static reinforcement and further subdivide them.

Particularly preferred frame profiles 1 ', 2' are those with embedded reinforcement profiles which are manufactured by a coextrusion process, the reinforcement reinforcements being made of aluminum or fiber-reinforced plastic.

It is preferably provided that the stop seals (inside / outside) 5, 7 are designed circumferentially, that is to say run on four sides of the frame, while the central and contact seal 18 is not provided on all sides of the frame.

The seals - here you seals 5, 7, 18 - can advantageously be made from a weldable TPE or weldable EPDM. In this way, profiles with inserted seals can be welded to frames at the same time.

The central and contact seal with the contact sliding section 23 is multi-articulated and has a curved sliding surface which, together with a contact sliding strip 24 attached to the sash frame (or frame 1), forms a particularly favorable friction pairing. The surface structures and the material combination are important to achieve an optimal result.

In the construction shown, the contact sliding section 23 closes the frame rebate space or gap between the frame and the sash up to the outer profile edge of the sash frame 2. As a result, a larger opening width ("W") is achieved compared to the prior art ( Fig. 1b ). Depending on the profile width ("B" between room I and room II), 50 to 80 mm are preferably achieved. The geometry of the sliding seal, in particular the length of the sealing lip, is also advantageous. Overall, such relatively large opening widths can be achieved in the ventilation position. A width of 55 to 65 mm is particularly preferred. The formula for a maximum opening width for sound-insulated ventilation can be assumed: Wmax. = B - 25 mm.

A significantly larger number of hollow chambers compared to an aluminum composite structure has an advantageous effect in terms of sound insulation.

By using the contact sliding strip 24, the friction of the sliding seal on the sash frame can be reduced to a minimum. This means that the material and surface structure are adapted to one another. The sliding seal preferably has a roughened surface structure on the sliding side. The system sliding strip is preferably characterized by a sliding coating. The surface structure can of course also be designed the other way around.

The inner chamber H7 is preferably not used directly as a ventilation duct, since this is not advantageous for reasons of sound insulation. Rather, two chambers can form between the ventilation cassette wall and the outside, which chambers are particularly preferably separated from one another by an aluminum wall.

To Figures 9a and b is complementary to the construction of the Fig. 1a and b provided to form a further sealing lip 25 on the central and contact seal 18 on the sealing base 20, which in the closed state rests on the sash frame 2, so that between the frame and the sash frame even four sealing planes are advantageously formed in sections in the frame rebate space.

It is particularly advantageous on the contact slide strip 24 that a component adapted to the one or more corresponding seal (s) on which it is applied is provided. The shape, surface and material of the contact sliding strip 24 can be placed on the seals so that an optimal sliding and / or rolling process is achieved. This reduces the operating forces at the window to a minimum. The seals "slide / roll" so long on the contact sliding strip 24 until they no longer have any contact with the frame profile.

The best coefficients of friction are achieved with a slightly rough surface. Isolation bars are usually very smooth, so that seals tend to adhere to them. In contrast, a metal, in particular aluminum, is preferably used as the material for the contact slide strips 24. According to an advantageous variant, the rough surface can be achieved by deep-pore anodizing. Special lacquers that form a slightly rough surface after drying can also be used to create a slightly rough surface. Ultimately, plastics can also be applied or overmolded, which are given surfaces that are well suited for the contact strip,

Overmoulding can be implemented, for example, in an extrusion process. It is important that the contact strip can be optimally adjusted to the seals. This is not possible with system insulating bars.

The ventilation window works until the seal lifts off (from the insulating bar). This point limits the opening width for soundproof ventilation. The contact sliding strip according to the invention maintains contact with the seal for a significantly longer period than was the case in the prior art, which means that a larger opening width can be achieved. Particularly advantageous hold, the contact slide strip extends to the edge of the frame profile and thus enables a larger opening width.

The contact slide strip 24 is connected to a side of the frame profile facing the rebate to which it is to be attached. Known connection options such as screws, rivets, clips, gluing, etc. are available for this purpose. It is preferred to attach the contact slide strip to the rebate side of the sash profile 102 close to an edge, in particular to the edge that faces the interior or exterior in this way, a relatively large opening width in the ventilation position can be achieved in a simple manner.

Figure 1c shows as a variant a section through an aluminum composite profile construction consisting of a frame profile 101 and a sash profile 102. As exemplified in FIG Figure 1c shown, the outer edge of the sash profile, to which the contact sliding strip is to be attached, can thus be formed by an outer aluminum profile shell. It is advantageous that the system wear strips can be used in different frame profile systems as required. The strips can also be easily replaced in the event of repairs or wear.

The frame profile 101 can - as in Fig.1c - have a first metal shell 101a and a second metal shell 101b in this variant. These two metal shells 101a and 101b can be connected to one another via an insulating web 101c (or several insulating webs). The sash profile 102 can also have a first metal shell 102a and a second metal shell 102b. These two metal shells 102a and 102b are connected to one another via an insulating web 102c (or several insulating webs). In the installed state, the first metal shells 101a, 102a can be oriented towards an outside I of a building and the second metal shells can be oriented towards an inside II of a building. An insulating glass pane 103 is inserted into the casement.

A center seal 104 and a sliding seal 105 are arranged in the fold F between the frame profiles. They can be attached to the frame. The sliding seal 105 functionally also forms a type of central seal and the central seal 104 a type of contact seal, the latter lifting off the sash when it is opened, which is not the case with the central and contact seal 18, 105.

A variant of a contact slide strip 124 is provided in the fold F opposite the seals 104 and 105. This contact sliding strip 124 is fastened to the sash profile 102 in the area of the outside I. To this extent, it has a fastening end 124 a (which can also be called a fastening base 124 a or fastening foot). The fastening foot can be designed as a projection which engages in the groove 102d. As an alternative or in addition, it can also be clamped and / or latched there.

The fastening base 124a can thus engage in the groove 102d of the sash profile, in particular in the first metal shell 102a (preferably towards the outside I). Additionally and / or alternatively, the fastening end 124a can be fastened there with a fastening means, for example screwed tightly with a screw.

Starting from the fastening end 124a, the contact slide strip 124 protrudes slightly into the fold F in the direction of the frame profile 101 and then extends at a distance from the insulating web 102c of the sash profile next to it in the direction of the second metal shell 102b of the sash frame 102, but does not touch it.

In the in Figure 1c In the closed position shown, the two seals 104 and 105 - that is to say here the central seal 104 and the central and contact seal 105 - are both in contact with the contact slide strip 124.

In this respect, the contact slide strip 124 protrudes in the rebate over the insulating web of the sash, but does not lie thermally advantageously on the insulating web, so that preferably a gap X can even form in sections towards the insulating web.

As a result of this advantageous embodiment, the contact slide strip 24 can be resiliently deformed in order to evade the forces acting, in particular when opening and closing the sash. This advantageously reduces the operating forces when opening and closing the sash. In the case of composite constructions, the contact slide strip 124 can, in preferred configurations, protrude up to approximately the middle of the insulating web 102c. But it can also be made longer. It is preferably designed in such a way that at least one of the two seals 104, 105, in particular the central and contact seal 105, is in contact with it in the open position of the sash (similar or analogous to FIG Fig. 1b ).

In the following, in particular, further configurations of various seals are described which are suitable for ventilation windows, in particular for ventilation windows of the type Fig. 1a or 1c or 9a and 9b .

The representations are not to be understood as a mandatory combination of features. Individual features of the seals shown below can therefore be made the subject of one or more claims, either individually or in any combination.

It has been found that the central and abutment seal 18 can advantageously be designed in such a way that it not only performs a sliding movement, but also superimposes a rolling and rotating movement on the opposite surface of the opposite element on which its abutment slide section 23 rests. This is advantageous since the effects that make opening the window more difficult due to the forces exerted by the seal in the rebate space F are thus further reduced.

It points perpendicular to the image plane Fig. 1 and 2 or, in the main direction of extent of the window and sealing profiles, a substantially linear contact with the contact sliding surface 23. In addition, the friction factors of the surfaces involved can be reduced by using well-coordinated materials. The width of the "linear abutment" is preferably 2-4 mm perpendicular to the main extent of the line.

The sealing material, including combinations of different materials and / or hardnesses, are selected so that, on the one hand, there is a sufficiently high sealing pressure for a secure seal and, on the other hand, the seal is soft enough not to exert any great forces that lead to stiffness.

It is particularly preferred as in Fig. 1a , b , c or 2 or 9 shown when the contact sliding section 23 is designed to be rounded perpendicular to the main extent of the sealing profile.

The central and system seal 18 of the Figure 1c or 9 or 2 can in turn be attached to the ventilation cassette 14, in particular to the cover 16.

The central and abutment seal 18 also has a seal base 20 with a seal base 21 which is inserted or can be inserted into a groove in order to fasten the seal.

The sealing base 20 of the central and abutment seal 18 - see the advantageous embodiment of FIG Fig. 2 - can also have a support leg 21a. This support foot 21a can be designed for supporting and stabilizing contact with an abutment on the side of the fold or on the element on the side of the fold on which the sealing foot 21 is also designed as a fastening foot. The support foot 21a can lie next to the sealing foot 21, preferably it is provided at a distance from this.

The sealing section 22 adjoins the sealing base 20. It is provided here that, starting from the seal base, it has two sections that are connected to one another but are formed one behind the other.

These two sections formed one behind the other can be connected to one another by a joint G. As a result, the two sections can be pivoted relative to one another. The sections can also be designed to be bendable.

The section which is further spaced apart from the sealing base 20 forms the contact sliding section 23 and / or has it. This is designed to rest on the element formed on the opposite side of the fold. This means that it must be so far away from the sealing base 20 that it comes to rest on the opposite element (when the sealing base 21 is arranged on the window frame on the sash or when the sealing base 21 is arranged on the wing frame on the window frame) so that the central and system seal 18 completely crosses the rebate from the frame 1 to the sash frame 2.

The central and contact seal is designed so that its contact sliding section over a certain opening path, preferably over the entire opening path up to the ventilation position (cf. Fig. 1 and 2 or 4a to c ) remains in contact with the opposite element.

In this case, the contact sliding section 23 can be designed and arranged in such a way that it can move during the opening and / or during the closing of the opposite element - that is, in Fig. 1 or 3 or 4th of the casement 2 - performs a sliding movement or a rolling movement or a combined sliding and rolling movement on this.

For this purpose, the contact sliding section preferably has a curvature or a radius, so that it performs a rolling movement more easily. In addition, it is advantageous if it can be pivoted via at least one joint G.

On the one hand, a joint G can be provided between the two sections. However, a joint can also be provided between the sealing base 20 and the first section. In addition, one or both of the sections can also be designed to be articulated in itself.

It can be provided that one or both of the sections adjoining the sealing base 20 is / are designed as a hollow chamber K1 and / or K2. Starting from the sealing base 20, these hollow chambers K1 and K2 lie one behind the other.

It can then after an advantageous and in Fig. 2 The illustrated embodiment can be provided that these two hollow chambers K1 and K2 each initially widen and then taper again as the distance from the seal base 20 increases.

One joint G is formed between the two hollow chambers. Here it is formed by a web between the two hollow chambers K1, K2 and possibly by a material constriction.

In addition, one or both walls of the two hollow chambers K1, K2 can each have one or more constrictions E, which also behave like joints. Each of the hollow chambers K1, K2 thus again forms a kind of joint area GB 1 or GB 2 in which it is bent and compressed in itself can be. The contact sliding surface 23 is also rounded and has a type of rolling radius R1.

The lower part of the sealing area 1 can oscillate through the joint area GB1 on the first hollow chamber K1. The joint area GB2 can be used particularly well for compressing the second hollow chamber K2.

The second hollow chamber K2 then adjoins the hinge point or the hinge axis G.

The seal 18 thus in turn has the sealing section 22, which is pivotably attached to the seal base 20 and which is formed from the two hollow chambers K1, K2 arranged one behind the other and separated by a hinge area G1, the hollow chamber K2 forming a rounded contact sliding surface 23 with a radius.

Due to the overall extremely articulated connection of the sealing section 22 to the frame profile - here an element of the window frame 1 - the central and contact seal 18 is able to implement rolling movements and to compensate for large tolerances. The joint G enables the sealing head or the holing chamber 2 with the contact sliding surface 23 to cover a relatively long distance during the opening and closing movement (the swinging from right to left 3a) and 3b) and 4a to 4c) in the Characters; x direction). In addition, the movement perpendicular to the frame profile (y-direction) for the tolerance compensation and for the compensation of the swivel movement (setting up the sash).

Instead of a second hollow chamber K2, a single sealing lip can also be provided ( Fig. 5 ). This can again be articulated in itself.

In addition, the two hollow chambers K1 and K2 can also be designed somewhat differently than in FIG Fig. 2 shown. They can, for example, turn out to be somewhat rounder or even more pointed, and in particular the outer hollow chamber K2 itself can still have sealing lip-like attachment.

Of Figure 4a to Figure 4c , 1 . after 3. and over the shoulder of the sliding strip up "rolls" and slides the sealing head, which is formed here by the second hollow chamber K2 with the contact sliding surface 23, both when opening and when closing. The sealing head then slides (grinds) on the sliding strip with a relatively small contact surface (linear contact surface). The line / area of contact in the view (above) should have a width of 1 - 5 mm, preferably 2 - 4 mm.

The seal can perform strong changes in shape (compression) due to the tubular design with thin wall thicknesses and several points of articulation (important with large tolerances between the frame and sash) and cause extremely low resistance forces.

For this purpose, the special geometry was developed, which also allows large opening widths for the gap ventilation of the window and thereby seals securely. Opening widths of up to 80 mm (50 - 80 mm) with profile depths of 65 mm (65 - 75 mm) can be achieved. With larger profile depths, the opening width increases accordingly.

The seal thus has at least one, preferably several hinge points or hinge areas G, which make up the high flexibility. However, the joints are designed in such a way that there is still sufficient contact pressure to ensure tightness. This is achieved, for example, by "double-web joint areas" which each form one of the hollow chambers K1, K2.

A particular challenge is securely sealing the corners between the outer frame and the casement.

In corner regions, a sealing corner piece 218 can be formed from the sealing contour, which can have extension pieces at its two ends E1 and E2, on or on which the seals 18 of the Fig. 2 are applicable. They can be welded there. However, it can also be provided that the corresponding central and contact seals on the corresponding two sides of the frame or casement frame 2, 1 can each be placed on the contours of the sealing corner piece 218 or that they can be inserted into them.

The respective sealing corner piece 218 thus has a first leg 218a and an angled, in particular right-angled, leg 218b. These are connected to one another via a corner area. It is advantageous that no gaps have to be formed in the corner areas.

Due to the angled arrangement in the miter area, compressing / upsetting and expanding the seals is particularly difficult. Often the tightness is lost in this area or the operating forces become very high. That is, in order to be able to achieve a reliable seal, the sealing corner pieces 218 have to absorb large deformations along the miter surface (cut surface in the corners) or in its area. The problem, the elongation (elongation forces) in the material Keeping it as low as possible is achieved by scaling the geometry negatively to the "miter surface" and shifting it in the direction of the contact point.

The two legs 218a, 218b are correspondingly narrower in the image plane from the outside towards the corner.

On both legs 218a, 218b, one or more lugs 218c, d can be formed at the two ends, which are suitable for attaching, plugging in or plugging in the one or more hollow chambers K1 and K2 of the respectively corresponding central and contact seal (s) 18 whose assembly will be even easier.

The sealing corner piece 218 can otherwise be modeled on the contouring of the central and abutment seal, so that here, too, a sealing base 20 is formed with a sealing base 21 for insertion into the corresponding element of the frame or sash.

In addition, the two sections can be provided, which can be designed here in particular as two hollow chambers K1 and K2 arranged one behind the other, starting from the seal base in the installed state in the rebate (as here from the frame 1 to the casement 2).

This is good in Fig. 7 to recognize. The extent of the sealing section 22 can decrease from the ends of the two legs towards the corner from both sides.

In combination with the preferably "rounded" or preferably "rounded" sealing corner piece 218 of the stop or sliding strip, the expansion in the corner is considerably reduced and an optimal contact situation is established.

Another preferred center seal 104 can have a stop head (gooseneck). A stop bead is also possible.

The center seal 104 can also have a hollow chamber K. Again, the separation of the web walls by the hollow chamber is advantageous. As a result, good deformability is achieved with high stability and good thermal insulation at the same time. The distance between the web halves is a maximum of 2 mm.

The seal 104, which can come to rest approximately on an angled stop surface, can be provided in order to seal the window in the closed state against particularly high loads, such as driving rain and storms, for example. In combination, a very high level of tightness is achieved and at the same time only very low operating forces have to be applied. Reference number Frame 1 Casement 2 Surface element 3 Contact bridge 4th Stop seal 5 Contact bridge 6th Stop seal 7th Ventilation duct 8th first ventilation duct opening 9 second ventilation duct opening 10 Reinforcement reinforcement 11, 12 Recess 13th cassette 14th Basic element 15th cover 16 Groove 17th Center and system seal 18th Investment sliding section 23 wall 19th Passage 19a Seal base 20th Sealing base 21 Support leg 21a Sealing section 22nd Investment sliding section 23 Facility slide bar 24 Sealing lip 25th Sliding surface 26th Attachment area 27 Frame profile 101 first metal bowl 101a second metal bowl 101b Insulating bar 101c Sash profile 102 first metal bowl 102a second metal bowl 102b Insulating bar 102c Insulating glass pane 103 Center seal 104 Sliding seal 105 Facility slide bar 124 Sealing corner piece 218 leg 218a, b approaches 218c, d Hollow chambers H1, H2, .... Hollow chambers K1, K2 Rebate F. Rebate section FI, FII Rolling radius R1 gap SI, SII Opening width W.

Claims (19)

Window that has at least the following characteristics: a) a frame (1) composed of several frame profiles (1 '), b) a sash frame (2) composed of several frame profiles (2 '), which has at least one surface element (3) and which is movable at least between a closed position and a ventilation position relative to the frame (1), c) wherein a frame rebate space (F) is formed between the frame profiles (1 ', 2') of the window frame (1) and the frame profiles (1 ', 2') of the sash frame (2), d) at least one ventilation duct (8) formed in at least one of the frame profiles (1 ') of the window frame (1) or in at least one of the frame profiles (2') of the casement (2), which has a first ventilation duct opening (9) and a second ventilation duct opening (10) has, e) wherein the casement (2) and the frame (1) are designed to close at least one of the ventilation duct openings (9, 10) in the closed position, and both ventilation duct openings (9, 10) of the at least one ventilation duct (8) in the ventilation position ) to release, f) with at least one sealing plane formed between the frame (2) and the sash frame (1) in the area of the frame rebate space in the open state, which is formed by at least one seal (18, 104, 105) which at least in the ventilation position on the frame or rests against the casement, and which is designed as a central and contact seal (18) which has a seal base (20) and at least one sealing section (22) which is pivotably attached to the seal base (20) and which is articulated with the seal base (20) is connected, and in any case in the area or areas in which a respective ventilation duct (8) is formed, at its free end with a contact sliding section (23) rests on the casement or on the frame. Window according to one of the preceding claims, characterized in that the central and contact seal (18) is designed to form a sealing plane remaining in the frame rebate space (F) and the To subdivide the frame rebate space (F) into two frame rebate space sections (FI, FII) so that air in the ventilation position between the two frame rebate space sections (FI, FII) can essentially only be exchanged through the ventilation duct (8). Window according to one of the preceding claims, characterized in that the central and contact seal (18) is attached to the frame (1) and, in particular in the ventilation position, is in contact with the sash frame (2), or that the central and contact seal (18 ) is attached to the sash frame (2) and is in particular in the ventilation position in contact with the frame (1). Window according to one of the preceding claims, characterized in that the sealing section (22) has at least one joint (G) or several joints, so that the sealing section (22) is again divided into at least two sub-sections. Window according to one of the preceding claims, characterized in that one or both of the sections of the sealing section (22) has / have a hollow chamber (K1, K2). Window according to one of the preceding claims, characterized in that the one or more hollow chambers (K1, K2) each form double web joint areas. Window according to one of the preceding claims, characterized in that the central and contact seal forms a combined sliding and rolling seal which is designed for superimposed sliding and rolling when the sash is opened or closed. Window according to one of the preceding claims, characterized in that the sealing base (20) of the central and abutment seal (18) has a sealing foot (21) and optionally a support foot (21a). Window according to one of the preceding claims, characterized in that one or both walls of the two hollow chambers (K1, K2) each have one or have several constrictions (E), which result in a joint-like behavior of the respective hollow chamber. Window according to one of the preceding claims, characterized in that it has at least one sealing corner piece (218) which has two legs (218A, 218B) which are angled to one another and connected via a corner area, to which the respective central and contact seal (18) can be attached . Window according to one of the preceding claims, characterized in that the width of the two legs (218A, 218B) of the sealing corner piece (218) decreases in each case from the ends towards the corner. Window according to one of the preceding claims, characterized in that the central and contact seal (18) consists of EPDM, TPE or silicone. Window according to one of the preceding claims, characterized in that the central and abutment seal (18) is surface-treated. Window according to one of the preceding claims, characterized in that at least two sealing levels are formed between the frame (2) and the sash frame (1) in the area of the frame rebate space all around in the closed state. Window according to one of the preceding claims, characterized in that the contact sliding section (23) rests in the ventilation position on a contact sliding strip (24, 124) of the casement or the window frame, which is formed on the casement or the window frame, in particular fastened and in the Rebate protrudes. Window according to one of the preceding claims, characterized in that a further central seal (104) is arranged in the rebate, which seal transversely closes the rebate only when the window is closed. Central and abutment seal (18), which is characterized in that it has one or more of the features related to the central and abutment seal (18) in the preceding claims. Central and contact seal (18), which is characterized in that, in the assembled state, it essentially only rests against an abutment or only in a linear contact area, the width of the linear contact area preferably being 2-4 mm. Sealing corner piece, characterized in that it has one or more of the features related to the central and abutment seal (18) in the preceding claims.

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