EP3800316B1 - 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.

Such a window, which enables soundproof ventilation in a tilted or rotated wing position, is known per se, for example from EN 1 0 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.

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 vorzugsweise 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 mit einem Anlagegleitabschnitt an dem Blendrahmen oder an dem Flügelrahmen anliegt,
7. g) wobei der Anlagegleitabschnitt in Lüftungsstellung an einer Anlage-Gleitleiste des Flügelrahmens oder des Blendrahmens anliegt, die an dem Flügelrahmen oder dem Blendrahmen befestigt ist und mit einem freien Ende in der Falzraum vorsteht.

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 preferably has at least one surface element and which can be moved relative to the window frame at least between a closed position and a ventilation position,
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) wherein the sash frame and the blind frame—in cooperation—are designed to have at least one of the ventilation duct openings in the closed position to close and to release both ventilation duct openings of the at least one ventilation duct in the ventilation position,
6. f) at least one sealing plane being formed between the blind frame and the casement in the area of the frame rebate space in the open state, which is formed by at least one seal which, at least in the ventilation position, bears against the blind frame or the casement with a contact sliding section,
7. g) the contact slide section in the ventilation position being in contact with a contact slide strip of the casement or the window frame, which is attached to the casement or the window frame and protrudes with a free end into the rebate space.

The term window should not be interpreted too narrowly. 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.

It is particularly advantageous that the contact sliding strip provides a component that is adapted to the one or more seals that are in contact with it. 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. But this is also one of its tasks, as well as one of its benefits, to which it can be specifically adapted, unlike bars or profiles, which primarily serve other purposes.

According to the invention, it is further provided that the contact sliding strip has an elongated, web-like, in particular elongated arc-like, shape with two ends in cross section, 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. This system sliding strip is particularly suitable for use on aluminium-plastic frame profiles.

According to one configuration, it can be provided that the contact sliding strip extends in sections at a distance, in particular essentially parallel, to the sash, in particular in such a way that the contact sliding strip extends in sections at a parallel distance from an insulating bar of the sash, the two metal shells of the Connecting the casement to each other and forming a section of the rebate space.

The advantageous system sliding strip can be ensured in such a simple way that the system sliding strip does not have to rest on the insulating bar, which is usually made of plastic, which means that the window can be opened due to the relatively high frictional forces between the insulating bar and the one or would adversely complicate the several investment webs. It can also be provided that the contact slide strip extends in sections at a distance from an insulating bar of the casement, which connects two metal shells of the casement to one another and forms a section of the rebate space.

If the contact sliding strip is in any case configured in a curved manner in sections, it can advantageously be provided that the contour of the curved contact sliding strip corresponds to the contour or path that the sash takes when moving out of the Closed position and vice versa in the area of the system sliding strip. A curved path is swept over in particular at the top of the wing (on the upper wing frame profile) if the wing can also be pivoted into a tilted position, for which purpose it can preferably have a horizontal tilting axis in its lower region. In this way, the necessary forces when opening and closing the sash are designed to be relatively constant in such a way that they hardly change while sweeping over the opening or closing path.

Then, according to a further advantageous embodiment of the invention, it can advantageously be provided that the seal, which comes into contact in the open or ventilation position and possibly also in the closed position of the window, is designed as a central seal. This center seal can in turn be advantageously designed to divide the rebate frame space into at least two rebate frame sections, so that air in the ventilation position can essentially only be exchanged between the two rebate frame sections through the ventilation duct, with the center seal having a seal base and at least one on the seal base pivotally fastened sealing section, which is connected in an articulated manner to the sealing base, the sealing section at least in the area or areas in which a respective ventilation duct is formed being in the ventilation position at its free end with the contact slide section on the contact slide strip. Two or more such center seals can also be provided.

Provision can then be made for at least two or at least three sealing planes to be formed circumferentially between the outer frame and the casement in the area of the frame rebate space in the closed state. 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.

According to one variant, it is advantageously provided that the middle seal is fastened to the window frame and is located in contact with the casement frame, in particular in the ventilation position.

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.

In this case, it is preferably provided that the center seal is fastened to the window frame and the contact sliding strip to the casement frame. 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.

According to a further option, it can advantageously be provided that the at least one middle seal is in contact with the contact sliding 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 seals is designed as a lip seal with one or more sealing lips, each of which is designed to be flexible. Because in this way the flexible sealing lips can be used to rest on the system sliding strip, which the opening movement or the closing movement of the sash accordingly not or hardly impede.

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 sliding contact section to have a roughened surface structure on the sliding side and/or for the sliding contact strip to have a sliding coating or for the sliding contact strip to have a roughened surface structure on the sliding side and/or for the sliding contact section to have 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 layers. 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.

According to a further option, it can be provided that one or more of the multi-chamber hollow profiles made of plastic of the window frame and/or the casement, which essentially consist of plastic, have at least one reinforcement insert. The reinforcing insert can be designed as a metal profile, for example as a tube. It is advantageous if steel tubes, e.g. square tubes, are simply inserted and screwed into the PVC profiles as reinforcement inserts.

It can also be provided that, as a reinforcement, a reinforcement reinforcement, e.g. made of metal in coextrusion with the multi-chamber hollow profile made of plastic, is produced.

Preferably, as the stopper seals and/or the center seal, 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 (separate or integral with the middle seal) is only on one (opposite the tilting axis) side or preferably on three sides (except for the tilting axis).

Preferably, the center seal may be formed as a lip seal having one or more sealing lips, each relatively thin and flexible. A large-volume multi-chamber central seal is advantageously not necessary in this way.

The seals are advantageously 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 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.

The relatively small opening width (hardly noticeable when pressing) 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 construction according to the invention, the sliding sealing lip closes the gap between the frame and the casement 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.

It is advantageous if the center seal has a seal base and a seal section pivotally attached to the seal base. This is preferably designed as a pivotable sealing lip. The sealing section--in particular the sealing lip--can be connected in an articulated manner to the sealing base.

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 to insert the pre-assembled ventilation cassette into the recess, for example to engage or clamp it.

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.

It is structurally favorable and simple if the central seal is arranged on the ventilation cassette, in particular on a groove in the ventilation cassette.

Provision can also be made for the sash to be movable by 50 to 80 mm relative to the window frame at at least one point when it is moved from the closed position into the ventilation position.

Overall, advantageously high sound insulation values can be achieved. The air exchange can be more than 12 m ³ /h (preferably >14) at 2 Pa (Pascal air pressure) and >25 m ³ /h (preferably >28) at 10 Pa.

Synthetic microfibers that are able to filter pollen are preferably arranged in the ventilation cassettes. This is particularly beneficial for allergy sufferers.

After an intended interval, this cassette can be cleaned and/or changed simply after opening the window, for example after one or more years. The ventilation cassette can be connected in a variety of ways be fixed to the frame, so clamping or preferably with a fastener such as at least one screw. It is also conceivable to change a filter material in the ventilation cassette if the ventilation cassette is provided with such a material.

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

Fig. 1 in a) und b)

je einen Schnitt durch einen beispielsweise im Einbauzustand oberen horizontal verlaufenden Abschnitt eines ersten nicht erfindungsgemäßen Fensters, wobei das Fenster in a) in einer Geschlossen- bzw. Schließstellung und in b) in einer Lüftungsstellung dargestellt ist;

Fig. 2 in a) und b)

je einen Schnitt durch einen beispielsweise im Einbauzustand oberen horizontal verlaufenden Abschnitt eines zweiten nicht erfindungsgemäßen Fensters, wobei das Fenster in a) in einer Geschlossenstellung und in b) in einer Lüftungsstellung dargestellt ist;

Fig. 3 in a)

einen Schnitt durch einen beispielsweise im Einbauzustand oberen horizontal verlaufenden Abschnitt eines erfindungsgemäßen Fensters, wobei das Fenster in einer Geschlossenstellung dargestellt ist, in b) und c) einen ersten Schnitt durch einen beispielsweise im Einbauzustand oberen horizontal verlaufenden Abschnitt eines weiteren erfindungsgemäßen Fensters ähnlich zu dem Fenster aus a), wobei das Fenster in b) in einer Geschlossenstellung dargestellt ist und in c) in einer Lüftungsstellung außerhalb des Bereichs einer Lüftungskassette, und in d) und e) einen zweiten Schnitt durch einen beispielsweise im Einbauzustand oberen horizontal verlaufenden anderen Abschnitt des weiteren erfindungsgemäßen Fensters aus b) und c) im Bereich einer Lüftungskassette, wobei das Fenster in d) in einer Geschlossenstellung dargestellt ist und in e) in einer Lüftungsstellung;

Fig. 4in a), b) und c)

jeweils Seitenansichten verschiedener Leisten für Fenster insbesondere nach Art der Fig. 3;

Fig.5 in a) und b)

jeweils Seitenansichten weiterer, verschiedener Leisten für Fenster insbesondere nach Art der Fig. 3;

Fig.6 in a) und b)

eine Seitenansicht und eine perspektivische Ansicht einer nochmals weiteren, anderen Leiste für Fenster insbesondere nach Art der Fig. 3; und

Fig. 7 in a), b) und c)

eine Seitenansicht und eine perspektivische Ansicht eines Anschnitts eines Eckbereiches eines Rahmens und in d) eine Seitenansicht eines Eckverbinder-Anlage-Gleitstücks.

The invention is described in more detail below using exemplary embodiments with reference to the drawing. The invention is not limited to these exemplary embodiments, but can also be implemented in a different way, literally, or in a different, equivalent way. Show it:

1 in a) and b)

each a section through an upper horizontally running section of a first window not 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;

2 in a) and b)

each a section through an upper horizontally running section of a second window not according to the invention, which is for example in the installed state, wherein the window is shown in a) in a closed position and in b) in a ventilation position;

3 in a)

a section through an upper horizontal section of a window according to the invention that runs horizontally, for example in the installed state, the window being shown in a closed position, in b) and c) a first section through an upper horizontal section, for example in the installed state, of another window according to the invention similar to the window from a), wherein the window in b) is shown in a closed position and in c) in a ventilation position outside the area of a ventilation cassette, and in d) and e) a second section through another section that runs horizontally, for example, at the top in the installed state window according to the invention from b) and c) in the area of a ventilation cassette, the window being shown in d) in a closed position and in e) in a ventilation position;

Fig. 4 in a), b) and c)

each side views of various moldings for windows in particular by type of 3 ;

Fig. 5 in a) and b)

each side views of other, different strips for windows in particular according to the type 3 ;

Fig. 6 in a) and b)

a side view and a perspective view of yet another, different bar for windows in particular of the type 3 ; and

Fig. 7 in a), b) and c)

a side view and a perspective view of a section of a corner area of a frame and in d) a side view of a corner connector abutment slide.

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 refinements of the objects described in one or more of the main and subclaims.

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 ( Fig. 3a - e )). Then they usually consist of one or more metal profiles - also synonymous here called metal shells - and one or more insulating bars. Preferred is one Construction in which two metal profile levels are connected to one another via an insulating strip level, which is usually 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′. This frame rebate space F essentially extends between the outer circumference of the sash frame 2 and the inner circumference of the window frame 1.

The respective window 1 or 3 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 "window frame profile 1'" and "window frame 1" as well as "sash frame profile 2'" and "sash frame 2" are also used interchangeably in this respect. 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 . Analogously can - preferably to the other side or towards the other adjoining room I - the window frame 1 has a contact bar 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 bar 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. Each of these measures and in combination ensure very good 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 directed toward the frame rebate space F.

A center seal 18 which extends into the frame rebate space F is preferably formed on the window frame profile. The center 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 seal 18 to be formed on the ventilation cassette 14, in particular on the cover 16.

The center seal 18 may include a seal base 20 with a seal foot 21 inserted into the groove. The seal 18 may further include 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 2a and b ). The sealing section 22 can in particular have a sealing lip that is curved in itself and/or has another joint section, so that it is divided into two lip areas that are movable relative to one another and 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 if it is so long that it can be in contact with the casement 2 . There he is preferably on with an end section. This end section can be arcuate.

The sealing section 22 can have a contact sliding section 23 as an end section, which can rest 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 preferably provided on the center 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.

It is particularly advantageous that the sealing section 22 is preferably 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 divides the frame rebate space F into two areas in the ventilation position, between which air is exchanged essentially only via the ventilation duct 8 .

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

Alternatively, when the ventilation duct 8 is arranged in the window frame 1 , the center seal can be attached to the casement frame 2 and extends to the window frame 1 . Even then, the sealing section 22 should preferably 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 that is yet to be explained, so that it divides the frame rebate space F into two areas in the ventilation position, 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 center seal 18 can then be arranged 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 seal 18 is still in contact with the casement frame 2. The casement is still partially within the scope defined by the frame 2. Since the central 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 changes multiple times the direction of airflow. 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 (see e.g Figure 3b ) to e), will be explained in more detail below). You can then analogous to 1 be used in a chamber, in particular a cutout of the window frame and/or it can completely replace one or more insulating bars that are otherwise provided in its area. 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 middle 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 center 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 3 if this is also the case, only 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.

However, the contact sliding strip 24 can also extend so far in the rebate space that the center 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. They themselves also 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 and the middle seal 18 are formed circumferentially, ie run on four sides of the frame, while the sealing section 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 center seal with the sliding contact section 23 is designed to be multi-articulated and has a curved sliding surface which, together with a sliding contact strip 24 attached to the sash frame (or window frame 1), forms a particularly favorable friction pairing forms. The surface structures and the combination of materials are important here in order to achieve an optimal result.

In the construction according to the invention, 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. 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 2a and b is complementary to the construction of the Fig. 1a and b intended to form a further sealing lip 25 on the central 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 system sliding strip 24 can be placed on the seals in shape, surface and material, so that an optimal sliding and / or unrolling 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 no longer have any 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 lifts off the insulating bar. This point limits the opening width. The contact slide strip stays in contact with the seal much longer than was the case in the prior art, which means that 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 3 shows in a) and in b) to e) a section through two different aluminum composite profile constructions consisting of a frame profile 101 and a casement profile 102. As an example in Figure 3a and 3b) to e), the outer edge of the casement profile, to which the sliding strip system is to be attached, can thus be formed by an outer aluminum profile shell. It is advantageous that the system slide rails can be divided into different Frame profile systems can be used. The strips can also be easily replaced in the event of repairs or wear.

The window frame profile 101 can - as in Figure 3a ) to e) - have a first metal shell 101a and a second metal shell 101b in these variants.

These two metal shells 101a and 101b can be connected to one another via an insulating bar 101c (or several insulating bars) ( Figure 3a ) to e). These insulating webs 101c can engage at their ends in receiving grooves 101d of the two metal shells 101a, 101b and be fixed there (eg by rolling a wall of the respective receiving grooves). The two metal shells 101a and 101b preferably each have at least one hollow chamber plane made up of one or more hollow chambers 101e.

The casement profile 102 can also have at least one first metal shell 102a and one 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 103 a type of contact seal, with the latter being lifted off the sash when it is opened, which is not the case with the center and contact seal and also the sliding seal 105 .

Compared to the seals 104 and 105 are in the fold F after Figure 3a ) and 3b ) to e) two different variants of a contact sliding strip 124 according to the invention are provided. 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 be inserted into the groove 102d of the casement profile, in particular in the first metal shell 102a (preferably towards the outside I), intervention. 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 fastening end 124a, the contact sliding 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 web 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. Here, the plant-slide bar Figure 3b ) to e) at its end has a cable receiving groove 134, in which a cable 135, for example a cable 135 with one or more electrical and/or optical conductors, can be held, for example by latching.

The cable receiving groove can be formed on the insulating strip 102c) of the casement profile 102. In this way, the cable 135 is held securely in the cable receiving groove 134 and is protected from damage towards the fold by the contact sliding strip 124 . In this way, the contact sliding strip also forms a cable holding strip here, which significantly simplifies the laying of a cable on the sash frame. In the case of an inverted construction with a contact sliding strip on the frame, laying a cable on the frame is simplified accordingly (not shown).

in the in Figure 3a In the closed position shown, the two seals 104 and 105 - ie here the middle seal 104 and the sliding seal 105 - are both on 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 configuration, the contact sliding strip 124 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 sliding seal 105, rests against it when the sash is in the open position (similar or analogous to Fig. 1b ).

After Figure 3b ) to e) in this exemplary embodiment, the ventilation duct 8 is in turn formed in one or more ventilation cassettes 14, each of which is inserted in a recess 13, in particular in a milled recess, which is in the window frame 1 (or the casement frame 2), e.g. continuously or starting from the Frame rebate space is formed, in turn, a ventilation cartridge 14 is preferably used in this cutout.

In this area of the ventilation cassette 14, the recesses 13 are preferably formed in such a way that the insulating webs 101c in this area--possibly except for the foot areas in the receiving grooves 101d of the metal shells--are completely removed. If necessary, parts of the receiving grooves 101d are also milled away without damaging the hollow chamber plane of the hollow chamber(s) 101e.

In this way, the machining of the cutouts 13 is easy. The ventilation cassette 14 takes over the thermal insulation instead of the insulating bars.

On the respective side of the frame on which a ventilation duct 8 is formed, this does not have to extend over the entire length of the respective frame section/frame beam. For example, one, two or more ventilation cassettes can be provided on one side of the frame, which are each provided spaced apart from one another, so that the sections of the alternately Figure 3b ) and c) on the one hand and 3d) and e) on the other hand. A plurality of recesses 103c are then to be provided.

The individual ventilation cassettes can be completely exchanged for new ones. However, it is also conceivable to open it by removing the cover 16, so that its interior—formed, for example, by sound- and/or heat-absorbing material such as foam strips or the like—can be exchanged with it or afterwards.

Figure 4a shows a first variant of a contact sliding strip 124 in section. The sliding strip 24 is designed as an elongated web-like element. It extends perpendicularly to the picture plane like a profile bar. One of its ends - attachment end 124a - is designed for attachment to the wing frame. From there it is in front of the fold between the casement 2 and the frame 1.

The upper side of the system sliding strip 124 - that is, here the side facing the frame 1 - serves as a contact and sliding surface for the seal 105 - which has therefore already been synonymously referred to as a sliding seal. For this purpose, the contact sliding strip 124 can have an arc shape at least towards this side. This page the contact sliding strip 124, on which at least the central and contact seal as well as the sliding seal 105 rests or slides during the opening or closing process of the sash, is also referred to as the sliding surface 126. This sliding surface 126 can advantageously be adapted to the pivoting radius of the wing, ie it can form a curved surface (large radius). It can also be coated.

The fastening area B1 of the contact sliding strip 124 is located on the left side directed towards the outside I. This area B1 can be configured differently. An embodiment as a clip connection for connecting to a corresponding clip element on the casement profile is particularly advantageous. is shown in Figure 4a but again a fastening area B1, which is designed for a screw connection. For connection, the contact sliding strip 124 is placed on the casement profile 102 and screwed there.

The width of this fastening area B1 is preferably about 1/3 of the total width of the contact sliding strip 124. This means that the area B2 standing freely above the insulating web 102b makes up about 2/3 of the total width. This area B2 should not be more than ¾ of the total width so that a springy effect is achieved but the area B2 does not become too unstable.

Figure 4b shows an alternatively designed contact sliding strip 124. This has a first sliding surface 126 and a second, somewhat offset sliding surface 126'. The shoulder creates a particularly suitable contact surface for a center seal 104 . This variant is also characterized by a hollow chamber 129 .

Figure 4c shows a further embodiment of the sliding strip 124 according to the invention. Here the sliding surfaces are not designed in the form of curves but rather as flat surfaces or slopes.

The plant sliding strip 124 of Figure 4c as well as 5a, 5b, 6a and 6b particularly preferably have one, two or more undercut groove(s) 127 which can be provided as connecting grooves for corner connector abutment slides 130.

The corner connector attachment sliders 130 are used to connect the attachment slide rails 124 of the various frame members of a sash frame across a corner.

For this purpose, the corner connector contact slides 130 can have two legs 130a, 130b aligned at an angle to one another, which in terms of their nature each adjoining system slide rails 124 can correspond. The contact sliding strips 124 of the respective frame profiles extend between the corner connector contact sliding pieces 130 of respectively adjacent corners and are preferably flush with them.

It can be provided that the corner connector abutment sliding pieces 130 and the abutment sliding strips 124 are provided with corresponding latching means and/or form-fitting means - e.g. designed as grooves 127 and lugs 131 - which the corner connector abutting elements in the axial direction -Connect slide pieces and contact slide rail 12 in the direction of the longitudinal extension of the frame bars. Thereby, the corner connector abutment sliders 130 are securely held.

By using corner connector abutment slides 130, the corners can be rounded. This is advantageous for the contact of the sliding seals on the contact slide rails. The advantage is that the compressive forces of the seals are balanced in this area, as described above.

This shows that the contact sliding strips 124 can advantageously extend beyond the corner area. The sliding seal or sliding seal 105 must undergo major changes in shape here, but must only cause the lowest possible forces. Especially in combination with z. B. rounded corner pieces 130, the expansion and thus the operating forces of the sliding seal 105 in corners are significantly reduced and a largely optimal contact situation is produced.

After Figures 5a and b the respective contact sliding strip 124 consists of two areas 124' and 124" or sections made of different material. One area 124' can be made of plastic, for example, and the other area 124" can be made of a metal such as aluminum. This sliding contact strip 124, which consists of two material areas, can be manufactured in one piece, for example using a coextrusion process, or it can be composed of two pieces that preferably run parallel to one another. 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 seal 18 Wall 19 passage 19a gasket base 20 sealing foot 21 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 receiving grooves 101d hollow chambers 101e 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 Areas 124', 124" fastening end 124a sliding surface 126, 126' grooves 127 hollow chamber 128 corner pieces 130 leg 131, 132 noses 133 cable receiving groove 134 Cable 135 gap X mounting area B1 free standing area B2 hollow chambers H1, H2, .... rebate space f rebate section FI, FII gap SI, SII opening width W

Claims (23)

1. Window comprising at least the following features:

   a) a fixed frame (1) composed of several frame profiles (1'),

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

   c) wherein a circumferential frame rebate space (F) is formed between the frame profiles (1', 2') of the fixed 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 fixed frame (1) or in at least one of the frame profiles (2') of the sash frame (2) and having a first ventilation duct opening (9) and a second ventilation duct opening (10),

   e) wherein the sash frame (2) and the fixed 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 fixed frame (1) and the sash frame (2) in the region of the frame rebate space in the open state, which sealing plane is formed by at least one seal (18, 104, 105) which, at least in the ventilation position, abuts against the fixed frame or against the sash frame by means of an abutting sliding section (23),

   characterized in that
   g) the abutting sliding section (23), in the ventilation position, abuts against an abutting sliding strip (124) of the sash frame or the fixed frame, which is fastened to the sash frame or the fixed frame and projects into the rebate space,
   wherein
   h) the abutting sliding strip (124) has a cross-sectionally elongated, web-like shape with two ends, wherein one of the ends is fixed to the sash frame or the fixed frame and the other free end projects into the rebate space.
2. Window according to claim 1, characterized in that the abutting sliding strip (124) has an elongated, arc-like shape in cross-section.
3. Window according to claim 1 or 2, characterized in that the abutting sliding strip (124) extends in sections at a distance from the sash frame in the rebate space.
4. Window according to claim 1 or 2, characterized in that the abutting sliding strip (124) extends in sections at a distance from an insulating web (102c) of the sash frame which connects two metal shells (102a, b) of the sash frame to one another and forms a section of the rebate space (F).
5. Window according to one of the preceding claims, characterized in that the contour of the abutting sliding strip (124) essentially corresponds to an arc shape which the sash sweeps over in the region of the abutting sliding strip (124) when moving from the closed position and vice versa.
6. Window according to one of the preceding claims, characterized in that the at least one seal for abutment against the abutting sliding strip (124) is formed as a center seal (18, 104, 105), preferably such that the center seal (18, 104, 105) forms a sliding seal adapted to slide on the abutting sliding strip.
7. Window according to claim 6, characterized in that the center seal (18) is adapted to divide the frame rebate space (F) into at least two frame rebate space sections (FI, FII) so that air in the ventilation position can be exchanged between the two frame rebate space sections (FI, FII) substantially only through the ventilation duct (8), wherein the center seal (18) comprises a seal base (20) and at least one seal section (22) pivotally attached to the seal base and hingedly connected to the seal base (20), wherein the seal section (22), at least in the area or areas where a respective ventilation duct (8) is formed, abuts the abutting sliding strip (124) at its free end with the abutting sliding section (23) in the ventilation position.
8. Window according to one of the preceding claims 6 or 7, characterized in that the center seal (18, 104, 105) is fixed to the fixed frame (1) and is in abutment with the sash frame (2), in particular in the ventilation position.
9. Window according to one of the preceding claims, characterized in that the abutting sliding strip (124) is fixed laterally to and/or in a corner region of the respective corresponding sash frame profile (2').
10. Window according to one of the preceding claims, characterized in that the abutting sliding strip (124) is fixed with one of its ends to a metal shell of the sash frame profile (2') at the side of an insulating web of the sash frame profile.
11. Window according to one of the preceding claims 6 to 10, characterized in that the at least one center seal abuts the abutting sliding strip (124) both in the ventilated state and in the closed state.
12. Window according to one of the preceding claims 6 to 11, characterized in that two center seals are provided, wherein at least one of the center seals abuts the abutting sliding strip (124) both in the ventilated state and in the closed state, and wherein the other abuts the abutting sliding strip (124) only in the closed state.
13. Window according to one of the preceding claims, characterized in that the shape, surface and/or material of the abutting sliding strip (124) and of the abutting sliding section (23) are matched and correspond to one another.
14. Window according to one of the preceding claims, characterized in that the abutting sliding strip (124) extends with one of its ends to an edge of the frame profile of the sash frame.
15. Window according to one of the preceding claims, characterized in that the abutting sliding strip (124) extends to an edge or just in front of an edge of the frame profile to which it is fixed.
16. Window according to one of the preceding claims, characterized in that the abutting sliding strip (124) and the one or more seals abutting it have surface finishes adapted to each other, and/or in that the abutting sliding strip (124) and the one or more seals abutting it are made of different materials.
17. Window according to one of the preceding claims, characterized in that the abutting sliding strip (124) has a roughened surface and the one or more seals abutting it has a sliding coating on its sliding side, or in that this seal has a roughened surface structure on the sliding side and the abutting sliding strip has a corresponding sliding coating.
18. Window according to one of the preceding claims, characterized in that the abutting sliding strip (124) consists of an aluminum alloy and/or plastic.
19. Window according to claim 18, characterized in that the abutting sliding strip (124) consists in sections of an aluminum alloy and in sections of plastic.
20. Window according to one of the preceding claims, characterized in that the abutting sliding strip (124) is fixed to the frame profile of the sash frame by screwing, riveting, clipping, gluing or the like.
21. Window according to one of the preceding claims, characterized in that the abutting sliding strip (124) has a cable groove (134) into which a cable (135) can be inserted.
22. Window according to one of the preceding claims, characterized in that adjacent abutting sliding strips (124) of the sash frame are connected to one another in corner regions of the sash frame via corner connector abutting sliding pieces (130).
23. Window according to one of the preceding claims, characterized in that the abutting sliding strip (124) is intended exclusively for abutting the seals and does not assume any further static function of the sash frame.

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