EP2764190A1

EP2764190A1 - Complete foldaway sliding door and window frame

Info

Publication number: EP2764190A1
Application number: EP12805472.3A
Authority: EP
Inventors: Giuseppe Esposito
Original assignee: Palladio SpA
Current assignee: Palladio SpA
Priority date: 2011-10-04
Filing date: 2012-10-03
Publication date: 2014-08-13
Also published as: ITVI20110266A1; WO2013051041A1

Abstract

A completely foldaway sliding frame (1; 50; 100) comprising a bearing frame (2) suitable to be buried in concrete into the perimetric wall delimiting a passage and/or ventilation room of a building in order to remain hidden from view in application phase, one front shutter (3, 4; 51, 52), fixed to bearing frame (2) and sliding along a linear direction (X), suitable to define a first operating position, wherein the front shutter (3, 4; 51, 52) closes the passage and/or ventilation room, and a second operating position wherein the front shutter (3, 4; 51, 52) opens said passage and/or ventilation room, and first guiding means (5) associated with a stretch of the perimetric wall delimiting the passage and/or ventilation room and allow sliding of said front shutter (3, 4; 51, 52) along said linear direction (X). In particular, the sliding door and window frame (1; 50; 100) include covering means (6) integrally movable with the front shutter (3, 4; 51, 52) at the lower end (3a, 4a) of which are coupled in order to define a passive position, in which they are hidden from view when the front shutter (3, 4; 51, 52) is in the first operating position, and one active position wherein they cover the lower linear slot made in the floor when the front shutter (3, 4; 51, 52) is in the second operating position.

Description

Complete foldaway sliding door and window frame

The present invention relates to a frame for windows or doors, which is sliding in complete foldaway, for example the one of the type known in the building sector as "lift-slide" frame, which is installed in correspondence of passage and/or ventilation room such as windows, doors, facades and the like, formed in the walls of buildings.

Notoriously, the doors and windows are used in the building sector for closing passage and/or ventilation rooms of buildings: the reference market requires such frames higher and higher thermal insulation capacity from atmospheric agents, both in the summer season and in winter, alike. Depending on the needs of the market, in addition, the frames should help insulating the building or rooms also in terms of acoustic, by dispersing outside noise that can interfere with normal work activities, leisure activities and/or the rest of the people.

In addition to these requirements, the frames must necessarily still present physical properties such as light weight, to be movable by the user without any particular difficulty or impediment, if they are of opening type, the mechanical strength, robustness and structural undeformability under the action of atmospheric agents and the continuous cycles of opening and closing, to ensure a perfect hermetic seal in closing conditions and deter or effectively counteract vandalism.

According to the latest and most popular trends in the construction sector, in particular dictated by architects which are designers of valued environments, the frames must also fulfil requirements of a purely aesthetic character that, in order to limit as much as possible the presence of points of structural discontinuity in the wall, provide totally hiding the frames by inserting them in the recesses formed in the peripheral wall (including the floor) that delimits the passage and/or ventilation room.

In fact, the frames are not so visible to the eye from the outside (or rather, in common parlance, foldaway).

In this way, when a passage and/or ventilation room, the frame of which is closed, the sole front shutter interfacing between two adjacent areas, remains visible, offering a particularly attractive aesthetic impact, which is in some respects surprising, and is almost not detectable in the case it consists of a simple glass plate.

In these stringent requirements of an aesthetic character from this sector, even sliding frames are not exempt, i.e. the type of frames the present invention is regarding.

The sliding frames of the known type typically comprise a bearing frame which, as said, is embedded in the perimetric wall delimiting a passage and/or ventilation room of a building, so as to remain hidden from view in application phase, and one or more front shutters, fixed to the bearing frame and slidable along a linear direction, usually horizontal.

The front shutters so define a first operating position, in which they close the aforementioned passage and/or ventilation room, and at least a second operating position in which they open at least part of the passage and/or ventilation room.

The known frames include, further, first guide means suitable to be associated with a stretch, usually horizontal, of said perimetric wall delimiting said passage and/or ventilation room and allow sliding of said front shutter along said linear direction.

The completely foldaway sliding frames provide, therefore, that the bearing frame remains always hidden from view, contained in special recesses formed in the side walls, in the upper wall and the lower wall (the floor) delimiting the entire perimeter of the passage and/or ventilation room in which these frames are applied.

This occurs, in particular, both in the fully closed position as in the position of total opening of the passage and/or ventilation room.

It inevitably follows that when the front shutter, which is moved by the user, opens even only partially the passage and/or ventilation room, returning at least partially in a recess having lateral dimensions in length and a height at least equal to those of the front shutter itself, at least a portion of the recess or lower linear slot, obtained in the pavement, remains free, uncovered, and exposed in view: it is reminded here that this linear slot often have heights and widths of some importance, approximately 8 cm.

The problems arising from this situation appear immediately apparent and obvious, especially in the eyes of experienced operators such as just the indoor architects.

The main drawback of the known completely foldaway sliding frames is, in particular, the fact that when the front shutter opens even only a part of the passage and/or ventilation room, the lower linear slot, which is likewise open and accessible, constitutes a seat in which water, moisture and/or impurities of various natures infiltrate.

This circumstance requires performing maintenance and cleaning of the lower linear slot that, even if occasional, are still costly, especially in the case in which part of the first guiding means previously introduced is installed inside the linear slot itself (as in fact it happens for door and window frames of the type called " lift-slide").

A second drawback, which is associated to completely foldaway sliding frames of the prior art, is constituted by the fact that, always when the front shutter opens even only partially the passage and/or ventilation room, the lower linear slot forms a discontinuity step in the pavement in which people may stumble accidentally, in a harmful and dangerous way, especially in the case of windows and shutters having large size.

A non final problem related to completely foldaway sliding frames of the current state of the art is due to the obvious imperfection created even temporarily and minimally from the lower linear slot when the front shutter opens the passage and/or ventilation room, an unsightly that badly combines or adapts to the needs of increasingly required by the market maximum linearity and structural homogeneity, which have been mentioned earlier.

The present invention seeks, therefore, to overcome the drawbacks of the known art which was just mentioned.

In particular, the principal aim of the present invention is to indicate a completely foldaway sliding frame which, in application conditions, provides coverage of the linear lower slot not only when the front shutter closes the passage and/or ventilation room, but also when it opens it at least in part.

Within this aim, it is a first task of the invention to provide a completely foldaway sliding frame that is capable of limiting, with respect to the prior art, maintenance and cleaning of the lower linear slot on which the front shutter supported by the bearing frame slides.

A second task of the invention is to reduce the costs of maintenance of completely foldaway sliding frames compared to those currently spent. Another object of the invention is to make available a completely foldaway sliding frame that increases, with respect to door and window frames of the known equivalent type, structural continuity in correspondence of the passage and/or ventilation rooms in which it is installed, especially when the latter is open due to the movement of the front shutter.

As part of this requirement, the task of the present invention is to create a completely foldaway sliding frame that reduces the risk for people in transit through the compartment even partially open, as a result of the sliding of the front shutter, accidentally tripping and even disastrously in the lower step of the linear slot.

Another object of the present invention is to devise a completely foldaway sliding frame which, in application conditions, offers an aesthetic effect better than that provided by known sliding frames and also especially when the front shutter opens at least in part the passage and/or ventilation room.

The foregoing objects are achieved by means of a completely foldaway sliding frame as the attached claim 1 , to which reference is made for sake of brevity.

Other technical features of detail of the sliding door or window of the invention are contained in the relevant dependent claims.

Advantageously, the completely foldaway sliding frame according to the invention, in the configuration of use, covers the linear lower slot, not only when the front shutter closes the passage and/or ventilation room, but also when it opens at least in part.

The merit of this is to be attributed to the covering means constructively integral with and, therefore, integral even in the relative movement impressed by actuation means such as the user's hand or a motor member, to the front shutter of the sliding door or window of the invention. When the front shutter opens even only a part of the passage and/or ventilation room, the covering means form a substantially continuous barrier that closes the lower linear slot, preventing or severely limiting the entry of impurities of various kinds within it.

Therefore, advantageously, the completely foldaway sliding frame of the invention reduces drastically, compared to the known equivalent technique, interventions for maintenance and cleaning of the lower linear slot of passage and/or ventilation rooms in correspondence of which the same frame is installed, as well as, possibly, the interventions for maintenance and/or replacement of the mechanical parts of the sliding door or window placed within that linear slot, with the obvious economic and operational savings that this entails.

Still advantageously, always thanks to the covering means just introduced, the completely foldaway sliding frame increases, with respect to door and window frames of the known type, the structural continuity in correspondence of the passage and/or ventilation rooms in which it is installed, even when the front shutter is arranged at least partially in the second operating position, to open the room.

This also determines the huge advantage of eliminating or at least largely reducing the risks to people, in transit through the room, stumbling clumsily and dangerously in the step formed by the lower linear slot.

More generally, thanks to the constructive measures expressed predominantly in the characterizing part of the main claim attached, the sliding door or window of the present invention thus limits, compared to the state of the art, the risks for people to fall to the ground when transiting through the passage and/or room ventilation concerned, and to ruin their shoes, especially those typically worn by women.

Equally advantageously, the completely foldaway sliding frame of the invention ensures a better aesthetic effect, than that offered by the sliding frames of the known type, even when the front shutter opens at least in part the passage and/or ventilation room: in similar application conditions, in fact, the lower linear slot is closed by means of covering enjoyed constructively sliding door or window of the invention.

In an advantageous manner, furthermore, the completely foldaway sliding door and window frame of the invention presents levels of thermal insulation, which are determined primarily by only one front shutter, which are greater than those of sliding frames of a known type when the passage and/or ventilation room is at least partly open: in case the front shutter is constituted by a layer of glass, as is generally the case, the level of thermal insulation provided by the sliding door and window frame, for which exclusive protection is sought, reaches, in fact, extremely high values.

Further features and details of the invention will better appear in the following description, relating to favourite embodiments of the completely foldaway sliding frame which is herewith claimed, such embodiments being given for indicative and illustrative, but not limitative purpose, with the help of the attached drawings wherein:

- figure 1 is a simplified front view of the sliding door and window frame of the invention;

- figure 2 is the A-A cross section of the frame of figure 1 , wherein the front shutters are placed in one of the operating second positions and the covering means are placed in the active position;

- figure 3 is the B-B cross section of the frame of figure 1 ;

- figure 4 is the enlarged view f the circled detail of figure 3, wherein the front shutters are placed in the first operating position and the covering means are placed in the passive position;

- figure 5 is the enlarged view of figure 4, wherein the front shutters are placed in one of the possible second operating positions and the covering means are placed in the active position;

- figure 6 is the top view of figure 5;

- figure 7 is the enlarged view of a first embodiment of the sliding door and window frame of the invention as shown in figure 4;

- figure 8 is the enlarged view of figure 7 wherein the front shutters are placed in one of the possible second operating positions and the covering means are placed in the active position;

- figure 9 is the enlarged view of a second embodiment of the of the sliding door and window frame of the invention as shown in figure 4;

- figure 10 is the enlarged view of figure 9 wherein the front shutters are placed in one of the possible second operating positions and the covering means are placed in the active position.

The completely foldaway sliding frame of the present invention is shown in one of its possible alternative embodiments in figure 1 , wherein it is globally referred with 1.

It should be noted that, preferably but not necessarily, the sliding door and window frame 1 of the invention is the "lift-slide" type as disclosed in the Italian patent N. 1342640.

As it can be observed, the sliding door and window frame 1 comprises:

- a bearing frame 2 suitable to be buried in concrete into the perimetric wall P delimiting a passage and/or ventilation room V of a building in order to remain hidden from view in application phase or condition;

- a pair of front shutters 3, 4, fixed to the bearing frame 2 and sliding along a respective linear direction X, suitable to define a first operating position (shown in figure 1), wherein the front shutters 3, 4 close the passage and/or ventilation room V, and at least one second operating position (i.e. the one shown in figure 2) in which the front shutter 3, 4 at least partly opens the passage and/or ventilation room V;

- first guide means, pointed with the reference 5 and better shown in figures 3 and 4, suitable to be associated with a stretch of said perimetric wall P delimiting said passage and/or ventilation room V and to allow sliding of the front shutter 3, 4 along the respective linear direction X.

According to the invention, the sliding door and window frame 1 includes covering means, indicated as a whole with 6, movable together with the front shutters 3, 4 at the lower end 3a, 4a of which they are coupled each other in order to define a passive position, wherein the covering means 6 are hidden from view when the front shutters 3, 4 are in their first operating position, and at least one active position wherein they cover the lower linear slot F (shown in figures 4 and 5) made in the floor P_a when the front shutters 3, 4 are in their second operating position.

Substantially, when the front shutters 3, 4, preferably realized in a transparent material, i.e. glass, are in the first operating position, they are the interface between the external environment and internal environment of the building wherein they close the passage and/or ventilation room V. The first guiding means 5 are of the type known to the skilled man in the art, comprising a longitudinal fixed rail 7 associated to the bottom D of the lower linear slot F and at least a mobile wheel 8, linked to the lower edge 3b, 4b of each front shutter 3, 4 by supporting means, which are not shown for the sake of simplicity, and turnably coupled to the longitudinal fixed rail 7.

In working conditions of the sliding door and window frame 1 , the covering means 6 are comprised within the perimetric wall P delimiting the passage and/or ventilation room V when they are in the passive position.

Effectively, the sliding door and window frame 1 comprises, in this case, two side formworks 9, 10 which are opposed each other, each of them being suitable for containing the covering means 6 when they are in the passive position.

Each side formwork 9, 10 is internally fixed to a containment niche, not shown in the attached figures, made in the perimetric wall P delimiting said passage and/or ventilation room V.

In particular, in working conditions, the side formworks 9, 10 are directly opposed to respective side niches N at least partially housing the respective front shutters 3, 4, when they are in the second operating position, at least partially opening the passage and/or ventilation room V. It should be noted that in other executive embodiments of the invention, which are not herewith illustrated, the completely foldaway sliding frame can include a number of side formworks which is different than two, such number being able to range, from one, depending on the constructing and working requirements.

Figures 5 e 6 further highlight that, in the active position, the covering means 6 are substantially coplanar to the upper walkable surface S of the floor P_a.

Such covering means 6 develop along a length greater than the length of the lower linear slot F in order to assure the complete and reliable cover of the latter when they are in the final active position, corresponding to the final or limiting second operating position of the front shutters 3, 4 so as the front shutters 3, 4 totally open the passage and/or ventilation room V. According to the favorite embodiment of the invention which is herewith described, the covering means 6 include a group of regular links that may be rolled up 11 consecutive and side-by-side each other, mutually connected through pivot means, indicated in the whole with 12, as shown in figure 4.

In particular, the regular links that may be rolled up 11 , purely by way of a not binding example, made up of a metallic material such as steel, define longitudinal directions Y parallel each other and orthogonal to the linear sliding direction X of the front shutters 3, 4.

In a preferred but not exclusive manner, pivot means 12 include a plurality of transverse pins 13, each of which connects two of the regular mesh that may be rolled up 1 adjacent each other.

The covering means 6 are coupled with the lower ends 3a, 4a of the front shutters 3, 4 by means of hooking means, numbered as a whole with 14. More in detail, hooking means 14 comprise a projecting peg, not shown, applied to the side edge of the front shutters 3, 4 and a coupling hole, non visible, made in the side surface of the first regular link 11.

In alternative embodiments, non shown, the projecting peg can be applied to the side surface of the first regular link del of the group of links and the coupling hole can be made in the side edge of the front shutters.

Suitably, but not necessarily, the hooking means 14 are of removable type in order to allow the separation of the covering means 6 from the front shutters 3, 4 when it is necessary to perform inspection, maintenance and/or cleaning of that lower linear slot F.

Preferably but not exclusively, the completely foldaway sliding frame 1 of the invention comprises, further, second guiding means, labeled in the whole with 5, suitable to be associated with both inner side edges L delimiting the lower linear slot F at the inlet B of the same lower linear slot F.

The second guiding means 15 cooperate with the covering means 6 in order to give them structural rigidity when they are in the active position of substantially closing and protecting the lower linear slot F, allowing people walking safe over the covering means 6.

In particular, the second guiding means 15 are fixed to a laminar finishing strap 16 suitable to be internally conjugated with the lower linear slot F with respect to which the laminar finishing strap 16 presents the same profile in cross section.

Preferably, the second guiding means 15 comprise a pair of longitudinal shaped brackets 17, 18 opposed each other, defining respective open profile seats 19, 20.

In working conditions, the open profile seats 19, 20 facing towards the interior of the linear slot F and gradually receive a plurality of slide pawls 21 when the front shutters 3, 4 are moved from the first operating position to any of the second operating positions.

Such slide pawls 21 , made e.g. synthetic polyamide (better known as the register trademark nylon®), are fixed to both ends of the transverse pins 13.

As it is observed in figures 4 and 5, each of the longitudinal shaped brackets 17, 18 have, preferably, in cross section a substantially "C"- shaped profile or "U"-shaped profile which has been rotated of 90° clockwise.

In further embodiments of the invention, not yet represented in the attached drawings, the second guiding means can be associated to only one of the internal side edges delimiting the lower linear slot at the inlet, in such case:

- the second guiding means include a sole longitudinal shaped bracket associated with at the inner side edges of the lower linear slot;

- the slide pawls are fixed to only one end of said transverse pins of the pivot means.

By way of preferred but not limiting example, the sliding door and window frame 1 also comprises guide and/or hold means, not highlighted for sake of simplicity, contained within of the side formworks 9, 10.

Such guide and/or hold means are suitable for keeping sorted the covering means 6 when they are in the passive position and the front shutters 3, 4 are in the abovementioned first operating position wherein they close the passage and/or ventilation room V.

The following figures 7 and 8 highlight a first possible variant of the invention wherein the completely foldaway sliding frame, now numbered as a whole with 50, is different than the one, which has been just described relating to figures 1-6 and numbered with 1 , in that it comprises sealing means, numbered as a whole with 55, suitable to be associated with both inner side edges L of the lower linear slot F in order to at least limit the infiltration of water and/or impurities within the same lower linear slot F.

More precisely, the sealing means 55 are arranged below the second guiding means herewith indicated as a whole with 53.

Moreover, the sealing means 55, on one side, are coupled to the laminar finishing strap 54, and, on the other side, are arranged close to the side faces of the front shutters, only one of which can be seen in figures 7 and 8, where it is indicated with 51.

In this case, the sealing means 55 comprise a pair of longitudinal shaped seals 56, 57 opposed to each other, partially projecting from respective bearing elements 58, 59, even them clearly facing each other, fixed to the laminar finishing strap 54.

It should be noted that the bearing elements 58, 59 are in a single piece, monolithic, with the respective longitudinal shaped brackets 60, 61 of he second guiding means 53.

Figures 9 and 10 show a preferred but not limiting example, of another possible embodiment of the invention wherein the completely foldaway sliding frame, now numbered as a whole with 00, is different than the one which has been just described with 50 relating to figures 7 and 8 for the kind of sealing means, now numbered as a whole with 105.

In fact, in this case, the sealing means 105 comprise a double plurality of brushes 106, 107 arranged side-by-sides, partially protruding from respective bearing elements 108, 109 opposed to each other and fixed to the laminar finishing strap 104.

In analogy to the above mentioned, relating to the second guiding means, it should be understood that further constructional executions of the completely foldaway sliding frame of the invention, not shown in the appended drawings, could provide that the sealing means are associated to only one of the inner side edges of the lower linear slot in order to limit water infiltration and/or impurities in the same lower linear slot.

It goes without saying that, in such cases, the sealing means comprise a single shaped seal or a single longitudinal series of brushes which are partially protruding from a single support element fixed to the laminar strip finishing internally coupled to the lower linear slot.

Operationally, assuming that initially the front shutters 3, 4 are in the first operating position, and so totally shut the passage and/or ventilation room V, and the covering means 6 are contained in the respective side formworks 9, 10, which are hidden from view, the actuating user acts on the operating handle in order to make one or both the front shutters 3, 4 slide along the respective linear directions X and arrange them at least partially within the lateral niche N which is in the perimetric wall P which is alongside the passage and/or ventilation room V.

In this way, the user opens at least partially the passage and/or ventilation room V in order to allow the transit of persons and/or, more simply, an increased recirculation of air.

During sliding along the linear directions X, the front shutters 3, 4 drag with them the covering means 6 so that, while the same front shutters 3, 4 release or gradually leave a portion of the lower linear slot F uncovered, the covering means 6, inserting in the second guiding means 15, cover without interruption this portion, so that it remains hidden from view even when the front shutters 3, 4 open at least partially the passage and/or ventilation room V.

This is the implementation of the main subject matter of the present invention, consisting in covering the lower linear slot in any operating condition of completely foldaway sliding frame for which the same linear slot is formed in the floor.

The second guiding means 15 give structural rigidity to the covering means 6 which are arranged substantially coplanar with the upper walkable surface S of the floor P_a when they move from the passive position to the various and consecutive active positions, the gradual definition of which ends with stopping the sliding of the front shutters 3, 4 along the linear direction X.

In the transition from passive position to active position, the regular links that may be rolled up 11 of the covering means 6 come out from the side formworks 9, 10 in which they are properly kept sorted by guides and/or hold means 14.

It's clear that, in order to bring one or both of the front shutters 3, 4 in the first operating position (of full closure of the passage and/or ventilation room V) starting from the reached second operating position (of partial or complete opening of the passage and/or room ventilation V), the front shutters 3, 4 slide, due to the traction or push exerted by the actuating user, along the linear directions X along the opposite way to the previous one, pushing gradually and totally covering the means 6 within the side formworks (subframes) 9, 10.

Reached the first operating position of the front shutters 3, 4, coincident with the passive position of the covering means 6, the lower linear slot F is filled and closed from the bottom, never in view, of the bearing frame 2 of the completely sliding foldaway frame 1 : the passage and/or ventilation room V thus appears as filled only by the central glass plate of the front shutters 3, 4, to the advantage of linearity and structural homogeneity of the embodiment, as increasingly required by architects designers in the building.

It should be noted, finally, that the conditions of use of the before mentioned completely foldaway sliding frames 50, 100 are exactly equivalent to those described above for the sliding door and window frame 1 and, therefore, it will be not dwell overly upon their treatment.

On the basis of the description just given, it is understood, therefore, that the completely foldaway sliding frame of the invention achieves the objects and realizes the advantages mentioned above.

During actuating, modifications may be made to the completely foldaway sliding frame of the invention consisting, for example, in a number of front shutters different from that used as a basis of reference for the above description, this number could vary depending on the needs and/or constructive choices as low as one.

In addition to this, other embodiments of the herein claimed completely foldaway sliding frame may exist, which are not shown, wherein the first guiding means have a construction concept which differs from the one above briefly described and which is obtainable from the drawings that follow, and this does not affect the benefit received from the present invention.

Moreover, in other construction variants of the invention, which are, again, not illustrated in the attached drawings, the completely foldaway sliding frame may include covering means of type different from that shown, as a preferred embodiment, in the course of the description already provided, and comprising, for example, a single longitudinal plate, which is joint to the front shutter and moved horizontally.

It is noted that the front of the shutter completely foldaway sliding frame of the invention can comprise a plurality of second operative positions, being able to open even only partially, according to various and intermediate measures, and/or completely, the passage and/or ventilation room formed in the wall of the building.

It's clear that numerous other variations may be made to the sliding door and window frames in question, without departing from the principles of novelty inherent in the inventive idea here expressed, as it is clear that, in the practical embodiment of the invention, the materials, the shapes and dimensions of the illustrated details can be any, depending on requirements, and can be replaced with other technically equivalent.

Where the constructing features and the techniques mentioned in the subsequent claims are followed by reference numbers or signs, those reference signs have been introduced with the sole purpose of increasing the intelligibility of the claims themselves and, consequently, they have no limiting effect the interpretation of each element identified by way of example only, by such reference signs.

Claims

1. Complete foldaway sliding door and window frame (1 ; 50; 100) comprising:

- a bearing frame (2) suitable to be buried in concrete into the perimetric wall (P) delimiting a passage and/or ventilation room (V) of a building in order to remain hidden from view in application phase;

at least one front shutter (3, 4; 51), fixed to said bearing frame (2) and sliding along a linear direction (X), suitable to define a first operating position, in which said front shutter (3, 4; 51) closes said passage and/or ventilation room (V), and at least one second operating position in which said front shutter (3, 4; 51) at least partly opens said passage and/or ventilation room (V);

first guide means (5) suitable to be associated with a stretch of said perimetric wall (P) delimiting said passage and/or ventilation room (V) and allow sliding of said front shutter (3, 4; 51) along said linear direction (X), characterized in that it includes covering means (6) integrally movable with said front shutter (3, 4; 51) at the lower end (3a, 4a) of which are coupled in order to define a passive position, in which they are hidden from view when said front shutter (3, 4; 51) is in said first operating position, and at least one active position in which they cover the lower linear slot (F) made in the floor (Pa) when said front shutter (3, 4; 51) is in said second operating position.

2. Door and window frame (1 ; 50; 100) according to claim 1) characterized in that said front shutter (3, 4; 51) forms the interface between the external environment and internal environment of said building said first operating position.

3. Door and window frame (1 ; 50; 100) according to claim 1) or 2) characterized in that said covering means (6) are contained into said perimetric wall (P) delimiting said passage and/or ventilation room (V) when they take said second operating position.

4. Door and window frame (1 ; 50; 100) according to any of the preceding claims characterized in that it comprises at least one side formwork (9, 10) which contains said covering means (6) when they take said passive position and suitable to be internally fixed to a containment niche made in said perimetric wall (P) delimiting said passage and/or ventilation room (V).

5. Door and window frame (1 ; 50; 100) according to any of the preceding claims characterized in that said covering means (6) include a group of regular links that may be rolled up (11) consecutive and side-by-side each other, mutually connected through pivot means (12).

6. Door and window frame (1 ; 50; 100) according to claim 5) characterized in that said regular links that may be rolled up (11) define longitudinal directions (Y) parallel each other and orthogonal to said linear sliding direction (X) of said front shutter (3, 4; 51).

7. Door and window frame (1 ; 50; 100) according to claim 5) or 6), characterized in that said pivot means (12) include a plurality of transverse pins (13), each of which connects two of said regular mesh that may be rolled up (11) adjacent each other.

8. Door and window frame (1 ; 50; 00) according to any of the preceding claims characterized in that said covering means (6) are coupled with said lower end (3a, 4a) of said front shutter (3, 4; 51) through hooking means (14).

9. Door and window frame (1 ; 50; 100) according to claim 8) characterized in that said hooking means (14) comprise a projecting peg applied to the side edge of said front shutter (3, 4; 51) or to the side surface of the first regular link (11) of said group and a coupling hole made in said side surface of said first regular link or said side edge of that front shutter.

10. Door and window frame (1 ; 50; 100) according to claim 9) characterized in that said hooking means (14) are of removable type in order to allow the separation of said covering means (6) from said front shutter (3, 4; 51) when it is necessary to perform inspection, maintenance and/or cleaning of that lower linear slot (F).

11. Door and window frame (1 ; 50; 100) according to any of the preceding claims characterized in that it comprises second guide means (15; 53) suitable to be associated with at least one of the inner side edges (L) delimiting said lower linear slot (F) at the inlet (B) of said linear slot (F) and cooperate with said covering means (6) in order to give them structural rigidity when they take said active position.

12. Door and window frame (1 ; 50; 100) according to claim 11) characterized in that said second guide means (15; 53) are fixed to a laminar finishing strap (16; 54) suitable to be internally conjugated with said lower linear slot (F) with respect to which said laminar finishing strap (16; 54) presents the same profile in cross section.

13. Door and window frame (1 ; 50; 100) according to claim 1 ) or 12) characterized in that said second guide means (15; 53) include at least one longitudinal shaped bracket (17, 18; 56, 57; 106, 107) that defines an open profile seat (19, 20) suitable to face towards the interior of said linear slot (F) and gradually receive a plurality of slide pawls (21) when said front shutter (3, 4; 51) is moved from said first operating position to said second operating position.

14. Door and window frame (1 ; 50; 100) according to claim 13) characterized in that said longitudinal shaped bracket (17, 18; 56, 57; 106, 107) presents in cross section a substantially C-shaped or 90°- clockwise rotated U-shaped profile.

15. Door and window frame (1 ; 50; 100) according to claim 13) or 14) characterized in that said slide pawls (21) are fixed to at least one end of said transverse pins (13).

16. Door and window frame (1 ; 50; 100) according to any of the claims from 4) to 15) characterized in that it comprises guide and/or hold means, contained within said side formwork (9, 10), suitable to keep sorted said covering means (6) when they take said passive position and said front shutter (3, 4; 51) takes said first operating position.

17. Door and window frame (50; 100) according to any of the preceding claims characterized in that it comprises sealing means (55; 105) suitable to be associated with at least one of said inner side edges (L) of said lower linear slot (F) in order to at least limit the infiltration of water and/or impurities within said lower linear slot (F).

18. Door and window frame (50; 100) according to claim 17) characterized in that said sealing means (55; 105) are arranged below said second guide means (53) and, on one side, are coupled to said laminar finishing strap (54; 104) and, on the other side, are arranged close to at least one of the side faces of said front shutter (51 ).