EP3848550B1 - Window with a ventilation duct - Google Patents

Description

The invention relates to a window with a ventilation duct, according to the preamble of claim 1.

A generic window that allows a soundproof ventilation in a tilted or rotated sash position is known per se, so from DE 10 2016 115 422 . However, the generic construction has a relatively complicated structure.

In addition, the known construction requires relatively large operating forces when closing the wing. A particular disadvantage is that the center seal of the frame slides only poorly on the insulating bar of the casement. The relatively small opening width in the ventilation position should also be mentioned as a disadvantage. The opening width is limited, among other things, by the (short) insulating bar of the sash frame as a sliding surface.

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

The invention achieves this object by the subject-matter of claim 1.

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 genauer gesagt in der Lüftungsstellung 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,
7. g) wobei der Dichtabschnitt wenigstens ein Gelenk oder mehrere Gelenke aufweist, so dass der Dichtabschnitt wiederum in wenigstens zwei Teil-Abschnitte unterteilt ist.

A window is created that has at least the following features:

1. a) a blind 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 can be moved at least between a closed position and a ventilation position relative to the blind frame,
3. c) a circumferential frame rebate space being formed between the frame profiles of the window frame and the frame profiles of the sash frame,
4. d) at least one ventilation duct 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 duct opening and a second ventilation duct opening,
5. e) the sash frame and the window frame being designed - working together - 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 window frame and the casement in the area of the frame rebate in the open state, more precisely in the ventilation position, which is formed by at least one seal which rests against the window frame or the casement at least in the ventilation position, and which as Central and contact seal is formed, which has a seal base and at least one seal section which is pivotably attached to the seal base and which is connected in an articulated manner to the seal base, and at least in the area or areas in which a respective ventilation duct is formed, at its free end rests against the sash frame or the window frame with a contact sliding section,
7. g) the sealing section having at least one joint or a plurality of joints, so that the sealing section is in turn divided into at least two partial sections.

The term window should not be interpreted too narrowly in the context of this document. It includes elements with a window frame and a casement frame that can be moved relative thereto. The window frame can be designed to run all the way round or not to run all the way round, as in the case of a door. A door is therefore also a window in the sense of this document. 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 be built into one. The window frame can thus itself form part of a facade construction. If the sealing base is fixed to the window frame, the contact sliding section rests in the ventilation position on the corresponding frame on the other side of the fold between the window frame and casement, ie on the casement. If, on the other hand, the sealing base is formed on the casement, the contact sliding section rests correspondingly on the casement in the ventilation position.

Provision is therefore made for a seal which comes into contact in the open or ventilation position and possibly also in the closed position of the window to be designed as a central and contact seal. This central and contact seal can in turn advantageously be designed to divide the rebate frame space into at least two rebate frame sections, so that air can essentially only be exchanged through the ventilation duct in the ventilation position between the two rebate frame sections, with the center seal advantageously seal base and the at least one sealing section which is pivotably attached to the seal base and which is connected in an articulated manner to the seal base, the sealing section in any case in the area or areas in which a respective ventilation channel is formed, in the ventilation position at its free end contacting the contact sliding section rests against the system slide rail. Two or more such center seals can also be provided.

It is therefore preferably provided that the central and contact seal is advantageously designed to form the sealing plane remaining in the rebate frame space in the ventilation position and to divide the rebate frame space into two rebate frame sections, so that air in the ventilation position between the two rebate frame sections is essentially only through the Ventilation duct can be replaced.

It can also advantageously be provided that the center and contact seal is attached to the window frame and is in contact with the casement frame, in particular in the ventilation position, or that the center and contact seal is attached to the casement frame and is in contact, in particular, in the ventilation position to the window 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-bar joint areas. This is because, on the one hand, sufficient stability of the respective seal can be ensured in this way and, on the other hand, sufficient joint-like flexibility when opening or closing. In particular, it can also be ensured in this way 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.

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

It can also be provided that one or both walls of the two hollow chambers each have one or more constrictions, which result in a simple manner in a joint-like behavior of the respective hollow chamber and yet do not reduce the sealing force too much due to the double-walled nature of the hollow chambers.

In order to optimize the sealing in the corner areas of the window, it can also advantageously be provided that at least one sealing corner piece is provided, which has two limbs which are at an angle to one another and are connected via a corner area and which each have a contact surface on which the respective central and contact seals can be attached. In order to reduce stresses in the corner areas, it can also be provided that the width of the two legs decreases from the ends towards the corner.

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 placed in its ventilation position, so that air can be exchanged between the rooms that contain the window when installed, i.e. usually between inside and outside, through these open sealing levels and the ventilation duct.

It can advantageously be provided that the contact sliding strip is attached to the side of and/or in a corner area of the respective corresponding casement profile. It can also advantageously be 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 sliding strip and the contact sliding section are matched to one another and correspond to one another.

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

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

It can preferably be provided that one or one of the center and contact seals in the installed state essentially only or only in a linear contact area on an abutment (usually the sash frame, when the seal is attached to the window frame), wherein 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 sliding strip and the contact sliding section can be or are matched to one another and correspond to one another. In this way, the materials can be matched to one another in such a way that the seal can easily slide along the contact sliding strip with its contact sliding section. This is achieved, for example, when the contact slide strip consists entirely or in sections of metal, in particular an aluminum alloy, and the contact slide section consists of an elastomer. Sections of the contact sliding strip can also consist of an aluminum alloy and sections of a plastic.

In one variant, the sliding seal can preferably also have a roughened surface structure on the sliding side. The contact sliding strip can have a corresponding anti-friction coating. The surface structure can also be designed the other way around. Provision can therefore be made for the contact sliding section to have a roughened surface structure on the sliding side and/or for the contact sliding strip to have a sliding coating or for the contact sliding strip to have a sliding coating 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 sliding strip extends to an edge or just in front of an edge (i.e. to less than 10 mm in front of the edge) of the frame profile of the casement to which it is fixed is.

The fixing of the contact sliding strip on the frame profile (of the casement or window frame) can be done in a variety of ways, such as by screwing, riveting, clipping, gluing.

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

Within the scope of this invention, the frame profiles can also have multiple shells. They can have, for example, two metal shells and an insulating strip level between them, but they can also have a metal shell and a plastic shell. However, they can also be constructed with five shells or as non-multiple shell or single shell plastic profiles, in which case 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 the casement consist entirely or essentially entirely of plastic.

Preferably, as the stop seals and/or the center and abutment seals, seals are used that are inserted into and held in retaining grooves. Such seals are relatively inexpensive and, above all, easy to assemble. They can be laid all around without being cut in the corners. The seals can be easily replaced due to the arrangement in retaining grooves. 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 middle seal are preferably formed all around, i.e. on four sides of the frame, while the sliding seal/sliding sealing lip (separately or in one piece with the middle seal) is only on one side (opposite the tilting axis) or preferably on three sides ( except on the tilt axis) is arranged.

The center and abutment 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 of a weldable TPE or weldable EPDM or silicone. In this way, profiles with inserted seals can be welded to frames at the same time. The sliding seal is designed with multiple joints 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 combination of materials are important here in order to achieve an optimal result.

In order to improve the forces occurring (within the seal and in particular the operating forces of the casement) 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 lubricity, 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 slide or stop bar will probably be made of this same material, PA 66 GF 25. Design of the seal = LFS silicone].

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

TPE seals are preferably surface treated according to the principle described in our application 35525DE. After this, im Extrusion process coextruded a PP layer and then peeled off. The resulting surface structure is particularly slippery (see DE 10 2018 124 170 A1 ).

A relatively small opening width (can hardly be felt when operating) results from the prior art mentioned at the outset due to the sealing means, the insulating bar. This has only a limited length. In the preferred construction, the center and contact seal closes the gap between the frame and the casement as a sliding sealing lip - possibly up to the outer profile edge of the casement profile. This achieves a larger opening width ("W"). Depending on the profile width ("B"), 50 to 80 mm are preferred. The geometry of the sliding seal, in particular the length of the sealing lip, is also decisive. Overall, even larger distances are possible. A width of 55 to 65 mm is particularly preferred. Wmax could be assumed as a formula for a maximum opening width for soundproof ventilation. = B - 25mm.

According to a variant that is structurally simple to implement, it can be provided that the one or more ventilation ducts is/are each formed in a ventilation cassette, which is/are inserted in the window frame or the casement. In this way, the formation of the ventilation duct is significantly simplified because it does not have to be formed directly in the hollow chamber profiles, which is laborious. Rather, it is sufficient to provide or form a recess there and then insert the pre-assembled ventilation cassette into the recess, e.g. latching or clamping.

The respective ventilation cassette can be inserted in a simple manner and preferably not visible from the outside in the closed position in a recess of the respective window frame profile or the respective casement profile facing the frame rebate space.

Provision can also advantageously be made for the respective ventilation cassette to have the ventilation duct openings and for these to be aligned with the frame rebate space. Provision can be made particularly advantageously 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 outer view of the window. The preferred design remains. In addition, the ventilation cassettes can be changed very easily in this way. This is required approximately once a year in order to meet cleanliness requirements (dust, insects, etc.). No specialist is required for the replacement.

According to one variant, it can be provided that a component adapted to the one or more seals that are in contact with them is provided by the contact sliding strip. The shape, surface and material of the contact sliding strip can be matched to 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 sliding strip is intended exclusively for contacting the (sliding) seal arranged on the opposite frame and does not assume any further static function of the casement. It is therefore not an integral strip of the casement or window frame that contributes significantly 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 closing and opening the sash, since a corresponding sliding seal is preferably in contact with it and can possibly slide during the opening and closing movement. However, this is also one of its functions as well as one of its advantages, to which it can be specially adapted, unlike bars or profiles, which primarily serve other purposes.

It can advantageously be provided that the contact sliding strip has an elongated, web-like, in particular elongated arc-like shape with two ends, one of the ends being fixed to the sash frame or the window frame and the other free end protruding into the rebate space. In this way, an additional strip is created for the frame profiles that are actually present on the casement frame (or the window 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 - window frame or Casement - to serve to close the ventilation duct at least in the opening and ventilation position of the casement relative to the frame. However, this is only an advantageous option that is particularly suitable for use on aluminium-plastic frame profiles. The system sliding strip can also have a different shape.

Advantageous configurations of the invention can be found in the remaining dependent claims.

The invention is described in more detail below using exemplary embodiments with reference to the drawing. The invention is not limited to this Examples limited.

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.

Show it:

1 in a) and b)

one section each through an upper horizontally running 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 having a central and contact seal and in c) another variant of a window according to the invention;

2

a variant of a central seal for insertion into a central region of a rebate between a casement and a frame of a ventilation window, which otherwise, for example, in the manner of Fig. 1a ) or c) or can be configured differently;

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 central seal, the window being shown in a) in a closed or closed position and in b) in a ventilation position;

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 from a) to b) to c) being moved further and further from a ventilation position to the closed or closed position;

5 in a) and b)

Sectional views of other variants of central and system seals for insertion into a central region of a rebate between a casement and a frame of a ventilation window, which otherwise, for example, on the type of 1 can be designed and in c) and d) the behavior of the center 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 being simplified is not shown here;

6

a sectional view of a portion of another first window according to the invention with another embodiment of a center seal, wherein the window is shown in a closed or closed position; and

Fig. 7 and 8 a) to d)

various views of a sealing corner piece; and

9 in a) and b)

each a section through an upper horizontally running section, for example in the installed state, of a further section according to the invention Window, wherein the window is 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.

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

On the frame 1 relative to the frame 1 movable wing is arranged. The wing preferably has a peripherally closed wing frame 2 and a surface element 3 inserted into the wing frame 2 and accommodated by it, such as a disk. The wing frame 2 is composed of several wing frame profiles 2` to form a frame shape, in particular a rectangular shape.

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

The window frame profiles can be designed as plastic profiles. However, they can also be designed as so-called composite profiles (not shown). Then they usually consist of one or more metal profiles - here also synonymously called metal shells - and one or more insulating bars. A design is preferred in which two metal profile levels are connected to one another via an insulating strip level, which is generally made of plastic. However, other, further designs are also conceivable, in particular designs with a metal profile level and an insulating profile level made of plastic, as well as designs with three metal profile levels and two insulating profile levels.

In the respective exemplary embodiments, a preferably circumferential frame rebate space F is formed between the outer frame 1 and the sash frame 2 or their frame profiles 1′, 2′. Essentially, this extends Frame rebate space F between the outer circumference of the sash frame 2 and the inner circumference of the frame 1.

The respective window 1 is used to be able to close and open a room opening in a building (not shown here), with a room I (eg a room surrounding a building) being separated from a room II (eg an interior of the building).

In the following, the terms “frame profile 1‴ and “frame 1” and “sash frame profile 2‴ and “sash frame 2” are also used interchangeably. Because the means and configurations discussed below can each preferably be formed circumferentially or in sections on the window frame 1 or on the casement 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 joint 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 Corresponding gaps also form on the sides of the window frame running in the ventilation position, but they do not have a constant width when the window is pivoted open. However, in addition to improving the ventilation effect just on these pages each ventilation ducts 8 in the manner of Fig. 1a and 1b also be trained.

The casement 2 can - preferably on one side or towards an adjacent room II - have a contact bar 4 with which it rests in the closed position on the window frame 1 directly or via a stop seal 5 attached to the casement 2 . Similarly, the window frame 1 can have a contact web 6, preferably on the other side or towards the other adjacent room I, 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 sealed.

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

After 1 it is further provided that at least the one or more hollow profiles of the window frame 1 or the casement 2, in which the ventilation duct 8 is formed, are designed 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 room side I and 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 perpendicularly to the direction I-II, in particular in the area of the contact webs. These measures, each and in combination, ensure very good soundproofing and thermal insulation properties. The intermediate walls between the hollow chambers inside the profiles are preferably thinner than the outer walls, in particular towards room I and towards room 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 thermal insulation, either individually or together.

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

A wide variety of plastics, among others, are suitable as the material. The plastic is particularly preferably a PVC. Provision can also be made for one or more of the multi-chamber hollow profiles made of plastic of the frame 1 and/or one or more of the multi-chamber hollow profiles made of plastic of the casement 2 to have at least one reinforcing 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 can be designed as a metal profile, for example a metal strip or metal plate or the like. However, it can also be designed as a reinforcing reinforcement made of a different plastic, for example a glass fiber reinforced plastic.

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

It is further preferred that the ventilation duct 8 is formed in a recess 13, in particular in a milled-out section, which is formed in the window frame 1 or the casement frame 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 window frame 1 or the casement 2. It is also possible for several of these ventilation cassettes 14 to be provided per frame profile or on several sides of the frame (not shown). The ventilation duct 8 can be formed in just one or in several of the profiles of the surrounding window frame 1 or the casement 2 in a simple manner.

Provision can preferably be made for the respective ventilation cassette 14 to have a channel or trough-like base element 15 . Provision can also be made for the respective ventilation cassette 14 to have a cover 16 .

Preferably, the cover 16 is executed towards the frame rebate space F.

A central and contact seal 18 which extends into the frame rebate space F is formed on the window frame profile. The center and bearing seal 18 can be attached to the ventilation cassette 14, in particular to the cover 16. Provision can be made for a fastening means, in particular an undercut groove 17, for the central and contact seal 18 to be formed on the ventilation cassette 14, in particular on the cover 16.

The center and abutment seal 18 has a seal base 20 with a seal foot 21 inserted into the groove. The seal 18 also includes a seal portion 22 pivotally 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 has a sealing lip that is curved in itself and again has an articulated section, so that it can be moved in two relative to one another and lip areas joining to form a longer lip is divided.

The sealing portion 22 is pivotable relative to the seal base 21 and is so long that it is in contact with the casement 2 . There he is on with an end section. This end section can be arcuate.

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

The contact sliding section 23 is provided on the center and contact seal where a ventilation channel 8 is also provided in the respective frame profile. This can be on one side of the window frame 1 or sash 2 or on several sides, preferably on three sides. If it is a tilting window, no ventilation duct is preferably formed on the side on which the tilting axis lies. Here, the abutment slide portion 23 can be omitted.

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

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

Alternatively, when the ventilation duct 8 is arranged in the window frame 1 , the center and contact seal can be attached to the casement frame 2 and extend to the window frame 1 . Even then, the sealing section 22 must be so long that when the sash is opened, it initially remains in contact with the window frame 1 over a certain opening angle or at least is or comes into contact with the window frame 1 in a ventilation position to be explained that he has the frame rebate space F in the Ventilation position divided into two areas, between which an exchange of air takes place essentially only via the ventilation duct 8.

It should be noted again at this point that the arrangement can also be "completely" reversed, in which case the ventilation duct is located in the wing frame 2 . The arrangement of the center and bearing seal 18 can then be carried out from the casement frame 2 to the frame 1 or vice versa.

In the ventilation position L of Fig. 1b the wing was moved relative to the frame 1 in an open position, in particular pivoted and / or moved. This open position is a ventilation position. You can - but this is not mandatory - the maximum achievable position when tilting or rotating or the like. Correspond.

The gaps 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 2. The center and bearing 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 plant seal 18 blocks the direct transition between the spaces FI and FII, an exchange of air between these spaces FI and FII and thus also an exchange of air between spaces I and II can only take place through the ventilation duct. This provides a very advantageous combination of a ventilation and a soundproofing effect.

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

Provision can also advantageously be made for one or particularly preferably both ventilation duct openings 9, 10 to be aligned towards the frame rebate space F.

At least one wall 19 can be formed within the ventilation cassette 14, which divides the interior of the ventilation cassette 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 within the ventilation cassette 14 (or also without a ventilation cassette) in an approximately U-shape. 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.3 be provided, although not so shown. It then becomes analogous to 1 used in a chamber, in particular a cutout of the frame. However, the ventilation duct can also be formed directly as a channel-like cutout in the window frame or it can be delimited by channel-like elements which are inserted into these cutouts.

Provision can also be made for a contact sliding strip 24 to be arranged on the casement 2 or on its casement profiles 2', on which a ventilation duct 8 is also provided. The central and contact seal 18 can then lie against this in the ventilation position L. Alternatively, the contact sliding strip 24 can also be designed in such a way that the central and contact seal 18 also rests against the contact sliding strip in the closed position.

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

However, the contact sliding strip 24 can also extend so far in the rebate space that the center and contact seal 18 also rests against it in the closed state.

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

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

The contact sliding strip 24 can also advantageously be designed as an attachment strip which is fixed to the respective casement profile 2′ with a fastening, for example a tongue and groove connection.

The frame profiles, in particular the outer walls of rooms I and II are according to the embodiment of 1 formed from a plastics material, preferably PVC. Preferably, they are made entirely of plastic - possibly except for inner reinforcement profiles or reinforcement reinforcements. You can be made in one piece, especially if they are made of plastic.

The outer walls of the plastic hollow chamber profiles 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, additional metal reinforcements 10, 11 are optionally arranged in the hollow chambers for static reinforcement and further subdivide them.

The frame profiles 1′, 2′ used are particularly preferably those with embedded reinforcement profiles that are produced 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 formed 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 of 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 slide section 23 is designed to be multi-jointed and has a curved sliding surface which, together with a contact slide strip 24 attached to the sash frame (or window frame 1), forms a particularly favorable friction pairing. The surface structures and the combination of materials are important here in order to achieve an optimal result.

In the construction shown, the contact sliding section 23 closes the frame rebate space or gap between the blind frame and the sash frame 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 realized in the ventilation position. A width of 55 to 65 mm is particularly preferred. The formula for a maximum opening width for soundproof ventilation can be assumed: Wmax. = B - 25mm.

A significantly larger number of hollow chambers compared to an aluminum composite construction has an advantageous effect with regard to 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 each other. The sliding seal preferably has a roughened surface structure on the sliding side. The system sliding strip is preferably characterized by a sliding coating. Of course, the surface structure can 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 are particularly preferably separated from one another by an aluminum wall.

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

What is particularly advantageous about the contact sliding strip 24 is that a component adapted to the one or more corresponding seal(s) against which it rests is provided. The contact sliding strip 24 can be tailored to the seals in terms of shape, surface and material, 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" on the contact sliding strip 24 until they are no longer in contact with the frame profile.

The best friction values are achieved with a slightly rough surface. Insulating bars are usually very smooth, so seals tend to stick to them. In contrast, a metal, in particular aluminum, is preferably used as the material for the contact sliding strips 24 . According to an advantageous variant, the rough surface can be achieved by deep-pored anodizing. Special paints 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 overmoulded, which gives them well-suited surfaces for the system slide rail,
Overmoulding can be realized, for example, in an extrusion process. It is important that the system slide rail can be optimally adjusted to the seals. This is not possible with system insulating bars.

The function of the ventilation window is given until the seal (from the insulating bar) lifts. This point limits the opening width for soundproof ventilation. The contact sliding strip according to the invention remains in contact with the seal for significantly longer than was the case in the prior art, as a result of which a larger opening width can be achieved. The contact sliding strip extends to the edge of the frame profile and thus enables a larger opening width.

The contact sliding strip 24 is connected to a side of the frame profile, which is directed towards the fold, to which it is to be fastened. Known connection options such as screws, rivets, clips, adhesives, etc. are available for this purpose. It is preferable to attach the contact sliding strip to the rebate side of the casement profile 102 close to an edge, in particular on the edge that faces the interior or exterior, because in this way a relatively large opening width can be achieved in the ventilation position in a simple manner.

Figure 1c shows as a variant a section through an aluminum composite profile construction consisting of a window frame profile 101 and a casement profile 102. As an example in 1c shown, the outer edge of the casement profile, to which the contact slide rail is to be attached, can thus be formed by an outer aluminum profile shell. It is advantageous that the system slide rails 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 window frame profile 101 can - as in Fig.1c shown - 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 bar 101c (or a plurality of insulating bars). The casement 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 bar 102c (or a plurality of insulating bars). In the installed state, the first metal shells 101a, 102a can be oriented toward an outside I of a building, and the second metal shells can be oriented toward an inside II of a building. An insulating glass pane 103 is inserted into the casement.

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

Opposite the seals 104 and 105 in the fold F there is a variant of a contact sliding strip 124 . This contact sliding strip 124 is fastened to the casement profile 102 in the area of the outside I. In this respect, it has a fastening end 124a (which can also be called fastening base 124a or fastening foot). The mounting foot can be formed as a projection that engages in the groove 102d. Alternatively or additionally, it can also be clamped and/or latched there.

The fastening base 124a can thus engage in the groove 102d of the casement 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 tight with a screw.

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

in the in 1c In the closed position shown, the two seals 104 and 105 - ie here the center seal 104 and the center and contact seal 105 - both rest against the contact sliding strip 124.

The contact sliding strip 124 protrudes in the rebate over the insulating bar of the sash, but it is thermally advantageous not to rest on the insulating bar, so that a gap X can preferably even form in sections towards the insulating bar. Due to this advantageous embodiment, the contact sliding strip 24 can be resiliently deformed in order to avoid forces acting in particular when the sash is opened and closed. This advantageously reduces the operating forces when opening and closing the wing. In the case of composite constructions, the contact sliding strip 124 can certainly protrude up to approximately the middle of the insulating web 102c in preferred configurations. However, 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, rests against it when the sash is in the open position (similar or analogous to Fig. 1b ).

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

It has been found that the center and contact seal 18 can advantageously be designed in such a way that it not only performs a sliding movement, but also a superimposed rolling and rotating movement on the opposite surface of the opposite element against which its contact sliding 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 1 and 2 or in the main extension direction of the window and sealing profiles, an essentially linear contact with the contact sliding surface 23. In addition, the friction factors of the surfaces involved can be reduced by using well-matched materials. The width of the "line-shaped contact" perpendicular to the main extension of the line is preferably 2-4 mm.

The sealing material, including combinations of different materials and/or hardnesses, are selected so that on the one hand there is sufficient sealing pressure for a secure seal and on the other hand the seal is soft enough not to apply large forces that lead to sluggishness. It is particularly preferred, as in Fig. 1a , b , c or 2 or 9 shown when the contact sliding section 23 is rounded perpendicularly to the main extent of the sealing profile.

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

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

The seal base 20 of the center and bearing seal 18 - see the advantageous embodiment of the 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 be located next to the sealing foot 21, preferably it is provided at some distance from it.

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

These two sections formed one behind the other are 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 portion further spaced from the seal base 20 forms and/or has the abutment slide portion 23 . This is designed to rest against the element formed on the opposite side of the fold. This means that it must be far enough away from the sealing base 20 that it comes into contact with the opposite element (if the sealing foot 21 is arranged on the window frame on the casement or if the sealing foot 21 is arranged on the casement frame on the window frame), so that the central and contact seal 18 completely crosses the fold from the frame 1 to the sash frame 2.

The center and contact seal is designed in such a way that its contact sliding section can be opened over a certain opening distance, preferably over the entire opening distance up to the ventilation position (cf. 1 and 2 or 4a to c ) remains in contact with the opposite element.

The contact sliding section 23 can be designed and arranged in such a way that during the opening and/or during the closing of the opposite element - i.e. in 1 or 3 or 4 of the leaf frame 2 - on this a sliding movement or a rolling movement or a combined sliding and rolling movement is carried out.

For this purpose, the abutment sliding section preferably has a curvature or a radius in itself, so that it more easily carries out a rolling movement. In addition, it can be pivoted via at least one joint G.

A joint G is provided on the one hand between the two sections.

However, a joint can also be provided between the seal base 20 and the first section. In addition, one or both of the sections can also be designed to be articulated.

Provision can be made for one or both of the sections adjoining the sealing base 20 to be designed as a hollow chamber K1 and/or K2. These hollow chambers K1 and K2 are located one behind the other, starting from the seal base 20 .

It can then look for an advantageous and in 2 In the configuration shown, these two hollow chambers K1 and K2 first widen and then narrow 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 forms a type of articulation area GB 1 or GB 2 in which it is bent and compressed 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 swing 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 which are arranged one behind the other and are separated by a joint region G1, with the hollow chamber K2 forming a rounded contact sliding surface 23 which has 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 compensate for large tolerances. The joint G enables the sealing head or the hollow chamber 2 with the contact sliding surface 23 to cover a relatively long distance during the opening and closing movement (oscillating from right to left 3a) and 3b) as well as 4a to 4c ) in the figures; x-direction). In addition, the movement perpendicular to the frame profile (y-direction) for tolerance compensation and for compensating for the pivoting movement (raising the sash).

Instead of a second hollow chamber K2, a single sealing lip can also be provided ( figure 5 ). This can be designed to be articulated again.

In addition, the two hollow chambers K1 and K2 can also be designed somewhat differently than in 2 shown. For example, they can be somewhat rounder or more pointed, and in particular the outer hollow chamber K2 itself can also have a sealing lip-like attachment.

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

The seal can undergo severe changes in shape (compression) due to the tubular design with thin walls and several hinge points (important with large tolerances between the frame and casement) and cause extremely low resistance forces.

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

The seal thus has at least one, preferably several, articulation points or articulation areas G, which account for the high flexibility. However, the joints are designed in such a way that there is still enough 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 to securely seal the corners between the outer and casement frames.

In corner areas, a sealing corner piece 218 can be formed from the sealing contour, which can have attachments at its two ends E1 and E2, on or to which the seals 18 of 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 blind or casement frame 2, 1 can 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 limb 218a and an angled, in particular right-angled limb 218b thereto. These are connected to each other via a corner area. It is advantageous that in this way no gaps have to be formed in the corner areas.

Due to the angled arrangement in the miter area, it is particularly difficult to compress/upset and expand the seals. The tightness in this area is often lost or the operating forces are very high. This means that in order to be able to achieve a secure seal, the sealing corner pieces 218 must absorb large deformations along the miter surface (cut surface in the corners) or in the area thereof. The problem, the strain (stretch forces) in the material Keeping it as small as possible is solved by scaling the geometry negatively to the "miter surface" and moving it in the direction of the contact point.

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

One or more attachments 218c, d can be formed at the two ends of both legs 218a, 218b, which are suitable for attaching, attaching or plugging in the one or more hollow chambers K1 and K2 of the respective central and contact seal(s) 18 which are even easier to assemble.

The sealing corner piece 218 can otherwise be modeled on the contours of the central and contact seal, so that a sealing base 20 is also formed here with a sealing foot 21 for plugging into the corresponding element of the blind or casement frame.

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

This is good in 7 to recognize. The extension 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 significantly reduced and an optimal contact situation is created.

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

The center seal 104 can also have a hollow chamber K. In turn, the separation of the web walls by the hollow chamber is advantageous. This achieves good deformability 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 into contact with an angled stop surface, can be provided to seal the window in the closed state against particularly high loads, such as driving rain and storms. In combination, a very high tightness is achieved and at the same time only very low operating forces have to be applied. Reference sign frame 1 sash frame 2 surface element 3 pier 4 bump seal 5 pier 6 bump seal 7 ventilation duct 8th first ventilation duct opening 9 second ventilation duct opening 10 reinforcement armor 11, 12 recess 13 cassette 14 basic element 15 cover 16 groove 17 Center and system seal 18 plant sliding section 23 Wall 19 passage 19a gasket base 20 sealing foot 21 support leg 21a sealing section 22 plant sliding section 23 Attachment slide bar 24 sealing lip 25 sliding surface 26 mounting area 27 frame profile 101 first metal shell 101a second metal shell 101b insulating bar 101c casement profile 102 first metal shell 102a second metal shell 102b insulating bar 102c insulating glass pane 103 center seal 104 sliding seal 105 Attachment slide bar 124 sealing corner piece 218 leg 218a, b approaches 218c, i.e hollow chambers H1, H2, hollow chambers K1, K2 rebate space f rebate section FI, FII rolling radius R1 gap SI, SII opening width W

Claims (15)

1. Window, which has at least the following features:

   a) a window frame (1) composed of a plurality of frame profiles (1'),

   b) a sash frame (2) composed of a plurality of frame profiles (2'), which sash frame (2) has at least one surface element (3) and is movable relative to the window frame (1) at least between a closed position and a ventilation position,

   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 sash frame (2), which ventilation duct (8) has a first ventilation duct opening (9) and a second ventilation duct opening (10),

   e) wherein 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 open both ventilation duct openings (9, 10) of the at least one ventilation duct (8) in the ventilation position,

   f) wherein at least one sealing plane is formed between the window frame (1) and the sash frame (2) in the region of the frame rebate space in the open state, more precisely in the ventilation position, which sealing plane is formed by at least one seal (18, 104, 105), which, at least in the ventilation position, rests against the window frame or against the sash frame, and which is formed as a center and abutment seal (18) which has a sealing base (20) and at least one sealing section (22) which is pivotably fastened to the sealing base (20), is connected in an articulated manner to the sealing base (20) and, at any rate in the region or regions in which a respective ventilation duct (8) is formed, rests at its free end with an abutment sliding section (23) against the sash frame or against the window frame,
   characterized in that

   g) the sealing section (22) has at least one joint (G) or a plurality of joints, so that the sealing section (22) is in turn divided into at least two sub-sections.
2. Window according to one of the preceding claims, characterized in that the center and abutment seal (18) is designed to form a sealing plane remaining in the frame rebate space (F) in the ventilation position and to divide the frame rebate space (F) into two frame rebate space sections (FI, FII), so that air can be exchanged between the two frame rebate space sections (FI, FII) in the ventilation position essentially only through the ventilation duct (8).
3. Window according to one of the preceding claims, characterized in that the center and abutment seal (18) is fastened to the window frame (1) and is located in abutment with the sash frame (2), in particular in the ventilation position, or in that the center and abutment seal (18) is fastened to the sash frame (2) and is located in abutment with the window frame (1), in particular in the ventilation position.
4. Window according to one of the preceding claims, characterized in that the one or both of the sections of the sealing section (22) has/have a hollow chamber (K1, K2).
5. Window according to claim 4, characterized in that said one or more hollow chamber(s) (K1, K2) form(s) respective double-web hinge portions.
6. Window according to one of the preceding claims, characterized in that the center and abutment seal forms a combined sliding and rolling seal designed for superimposed sliding and rolling when the sash is opened or closed.
7. Window according to one of the preceding claims, characterized in that the seal base (20) of the center and abutment seal (18) has a seal foot (21) and optionally a support foot (21a).
8. Window according to one of the preceding claims 4 to 7, characterized in that one or both walls of the two hollow chambers (K1, K2) each have one or more constrictions (E) resulting in a hinge-like behavior of the respective hollow chamber.
9. 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 at an angle to one another and are connected via a corner region and to which the respective center and abutment seal (18) can be attached.
10. Window according to claim 9, characterized in that a width of the two legs (218A, 218B) of the seal corner piece (218) decreases from the ends towards the corner in each case.
11. Window according to one of the preceding claims, characterized in that the center and abutment seal (18) is made of EPDM, TPE and/or silicone.
12. Window according to one of the preceding claims, characterized in that the center and abutment seal (18) is surface-treated.
13. Window according to one of the preceding claims, characterized in that at least two sealing planes are formed circumferentially in the closed position between the window frame (1) and the sash frame (2) in the region of the frame rebate space.
14. Window according to one of the preceding claims, characterized in that, in the ventilation position, the abutment sliding section (23) rests against an abutment sliding strip (24, 124) of the sash frame or of the window frame, which is formed on the sash frame or the window frame, in particular is fastened, and projects into the rebate space.
15. Window according to one of the preceding claims, characterized in that a further center seal (104) is arranged in the rebate, which only transversely closes the frame rebate space in the closed state of the window.

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