ITPD20120184A1 - WINDOW - Google Patents

Description

WINDOW

Field of application

The present invention refers to a window or door, according to the preamble of the main independent claim.

The invention in question is intended to be used in the window production sector and in particular for the construction of windows, French windows or glazing.

State of the art

According to the traditional technique closest to the present invention, the windows and doors have a glass panel made up of several parallel sheets, spaced two by two from one another by channels designed to define corresponding double glazing able to improve the thermal insulation of the window.

The window frame, be it a door or a fixed panel, also includes a frame, in metal, wood or plastic, which is associated with the panel on the perimeter during installation to support it with respect to a frame integral with the masonry of the building.

The interconnection between the glass panel and the frame has often proved to be a laborious practice to carry out and economically rather expensive so that, recently, the window market has become widespread in which the panel is mechanically associated with the frame already during the process. of production.

These new windows and doors were also created to meet the need to prepare at least one side plate of the panel completely visible with the perimeter edge that completely hides the frame laterally and without it being visually possible to see the engagement of the panel within a seat of the chassis.

An example of a window frame of the known type indicated above is described for example in patent DE 10119640.

Furthermore, from patent EP 1528213, a window frame provided with a glass panel comprising an internal plate, an external plate and a central plate, and a frame perimetally fixed to the glass panel is known.

This frame is composed of a first rectangular section profile fixed between the two side plates, below the central plate and partly below the two channels, and by a second profile, wider than the first and on which a glass rests side of the panel.

The known type of window described above has proved to be not free from drawbacks.

A first drawback resides in the fact that the frame is made up of several profiles which require laborious operations for their interconnection and which do not allow the creation of a high quality window.

A second drawback derives from the fact that the first section supports the glass in a way that is anything but optimal, since its precise positioning with respect to the central glass is not foreseen. In particular, the load of the panel, also unloading on a side plate of the panel, does not allow a centered support and determines the formation of moments that can create games or lead to subsidence or cracks.

A third drawback resides in the fact that no means are provided for supporting the side windows with respect to the central glass outside the sealing glues, leaving the latter with the entire effort of the weight force and therefore of the consequent shear moment with respect to the central plate. . Consequently, the seals between glass plates are necessarily chosen with an important thickness (for example greater than one centimeter) to support the weight of the plates themselves with a consequent increase in production costs.

A further drawback resides in the lack of adjustment systems of the glass panel with respect to the frame which, especially in the case of large windows, can cause aesthetically not appreciable misalignments as well as functional problems for the correct opening and closing of the window.

Windows and doors are also known, for example described in patent DE 102009027297 in which the support frame of the panel forms part of the channels that space the glass sheets.

These doors and windows require a complex production process and are not very versatile in its production possibilities, indissolubly binding the characteristics of the panel to those of the frame, as well as not guaranteeing good mechanical performance and, at the same time, good insulating sealing performance being the two functionality delegated to the same chassis.

A further drawback of the aforementioned known types of windows that use a support frame for the glass panel consisting of a metal profile is linked to the poor thermal insulation performance of the window or door. In fact, the insulation performance is significantly compromised by the presence of the metal profile inserted between the external and internal plate of the window frame and which form an unwanted thermal bridge between the internal and external face of the window or door.

Presentation of the invention

In this situation, the problem underlying the present invention is therefore that of obviating the drawbacks manifested by known solutions, by providing a window, which structurally connects its frame to its glass panel in a mechanically resistant manner. A further object of the present invention is to provide a window which is simple and quick to install and operationally completely reliable.

Another object of the present invention is to make a window or door available, which allows to isolate the internal environment from the external one, guaranteeing a reduced thermal transmittance coefficient.

Another object of the present invention is to make available a window frame provided with at least one face with fully visible glass supported by the frame in a mechanically optimal way.

A further object of the present invention is to provide a window or door which is quick and practical to make.

Brief description of the drawings

The technical characteristics of the invention, according to the aforementioned purposes, are clearly verifiable from the content of the claims reported below and the advantages thereof will be more evident in the detailed description that follows, made with reference to the attached drawings, which represent some purely exemplary embodiments. and non-limiting in which:

Figure 1 shows a sectional view of a crosspiece relating to a first embodiment of the window frame according to the invention, represented by a leaf;

- figure 2 shows the crosspiece of the leaf of figure 1 with the associated crosspiece of a frame coupled to it;

- figure 3 shows a perspective view of a section of the window frame of figure 1 with some parts removed to better highlight others;

figure 4 shows a perspective view of a detail of the window frame of figure 1 relative to its frame;

Figure 5 shows a sectional view of a cross member relating to a second embodiment of the window frame according to the invention, with the cross member of a relative frame associated with it;

Figure 6 shows a sectional view of a cross member relating to a third embodiment of the window frame according to the invention, with the cross member of a relative frame associated with it;

- figure 7 shows a sectional view of a possible embodiment of the frame of the window or door according to the invention carried out in proximity to an edge of the window or door.

Detailed description of an example of a preferred embodiment In accordance with the figures of the attached drawings, the window frame object of the present invention has been indicated as a whole with 1.

In the remainder of this description, reference will be made to a frame consisting of the sash of a window equipped with a glass panel 2, it being understood, however, that, without departing from the scope of protection of this patent, the frame can be constituted differently from a French window, a skylight, or another fixed or mobile window as long as it is equipped with a glass panel 2.

In particular, the embodiment examples illustrated in the attached figures refer to the preferential case, in which the window frame 1 is constituted by a movable leaf rotatably coupled to a frame 3 intended to be anchored in a built-in wall of a building.

The frame 3 has, in a completely traditional way, the shape of a quadrangular frame, usually obtained with two uprights and two crosspieces, and defining a plane of arrangement. This plan is that of the installation of window frame 1 and is equipped with an internal side, that is, facing the space of use of the building, and an external side, that is, facing the external environment. building.

Window frame 1 can perform functions of separation, protection, isolation of rooms in a completely traditional way, also allowing communication and visual contact between the external and internal environment, as well as being able to facilitate natural ventilation inside the locals.

The glass panel 2 is supported by a frame 4 fixed perimeter to the panel 2 and intended to support the latter with respect to the frame 3.

More in detail, the panel 2 is of the type formed by at least three glass plates, of which an external side plate 5, an internal side plate 6 and a central plate 7 interposed between the aforementioned two side plates 5, 6.

The three plates 5, 6 and 7 are rigidly fixed and parallel to each other along their perimeter, by means of fixing means described in detail below, and are separated from each other by means of a first channel 8 interposed between the external plate 5 and the central plate. 7 and a second channel 9 interposed between the internal plate 6 and the central plate 7. The aforesaid two channels 8 and 9 are positioned near the perimeter edges of the three glass plates 5, 6 and 7.

The three glass panes 5, 6 and 7, together with the two interposed channels 8 and 9, define between them a first and a second double glazing indicated respectively with the references 10 and 11.

Preferably, the central plate 7 is obtained with a tempered glass or with a laminated glass.

The fixing means mentioned above for fixing the glass sheets 5, 6 and 7 together are obtained with layers 12 of sealing material, placed close to the channels 8 and 9 on the external side of the double-glazing units 10, 11 or towards the perimeter edge of plates 5, 6 and 7.

The aforesaid sealing material of the layers 12 is preferably of the structural type, such as for example structural silicone. The thickness of these layers of sealant 12 can advantageously be of reduced dimensions, for example 8-9 mm, having to support in a limited way to shear stresses due to the weight of the side plates 5, 6, since, as explained below, they are advantageously, support plates for the side plates 5 and 6 are provided.

The channels 8, 9 are preferably obtained with aluminum profiles, or with silicone bars or even with PVC bars reinforced with steel layers, and have the function of keeping the plates 5, 6, 7 at a distance as well as dehydration of the air contained in the double-glazing units 10, 11. For this purpose, they may internally contain hygroscopic salts which can be reached through microholes appropriately obtained on the surface of the duct facing the inside of the double-glazing unit 10, 11, to absorb the humidity of the air that could otherwise condense on the internal walls of the plates 5, 6 and 7.

According to the idea underlying the present invention, the central plate 7 of the panel 2 extends at least from its lower side outside the double-glazed unit 10, 11 defined with the side plates 5, 6 or beyond the first and second channeling 8, 9 as well as beyond the corresponding layers of sealant 12 towards the outside of the panel 2, for at least a peripheral portion 13, preferably indicatively for example 10-20 mm high.

The frame 4, preferably obtained in an extruded plastic profile, for example in polyamide, in PVC or in an insulating composite material such as for example glass fibers, comprises at least a lower crosspiece 14 equipped with a seat 15 delimited by at least two parallel longitudinal walls 16 and by a bottom 17 placed to connect the aforementioned longitudinal walls 16.

Inside the seat 15 there is a bead of sealing material 18. The seat 15 also houses the peripheral portion 13 of the central plate 7 so that this last portion is embedded in the sealing bead 18 which rigidly fixes the frame 4 to panel 2.

The central plate 7 unloads the weight of the panel 2 or also of the other two plates 5, 6 onto the frame 4 in a median position with respect to its transversal thickness, in correspondence with the aforementioned seat 15.

The assembly of the leaf 1 consisting of the panel 2 formed by the three plates 5, 6 and 7 and the frame 4 is made in the production site so that when installing the window frame 1 it is sufficient to mount the hardware supporting the Door 1 on the frame, such as the hinges, to complete the assembly of the frame in an easy way.

Preferably, the peripheral portion 13 of the central plate 7 extends protruding outside the double-glazing units 10, 11 along the entire perimeter of the panel 2 (i.e. beyond the channels 8, 9 as well as beyond the corresponding layers of sealant 12), inserting itself into the seat 15 of the frame 4 also having a corresponding perimeter development to hold the aforementioned peripheral edge 13 along the entire perimeter and thus rigidly engage the panel 2. The latter rests in the seat 15 of the lower crosspiece of the frame 4 in correspondence with the lower side of the peripheral section 13 of the central plate 7 and is engaged with its other sides, lateral and upper, in the seat 15 obtained perimeter on the two lateral uprights and on the upper crosspiece of the frame 4, thus resulting firmly bound to the frame 4 along the entire perimeter and therefore with respect to forces transversal to the plane of the panel 2 due for example to the action of the wind.

In accordance with a preferential embodiment of the present invention, the frame 4 comprises two hollow side portions 19, 20 connected by a central portion 21. The two hollow side portions 19, 20 also have a perimeter development, they are preferably tubular in shape and have a section at right angles (in the figures they are rectangular in shape), one of which is internal 19 or arranged in correspondence with the internal face of the window frame 1, and an external one 20 or arranged in correspondence with the external face of the window frame 1.

Each hollow portion 19, 20 is arranged perimeter outside the space subtended between the two pairs of plates 5, 7 and 6, 7 which define the two double glazing units 10, 11 or is opposite the relative sealant layer 12 of the corresponding double glazing 10, 11.

The central portion 21 defines, in the part facing the panel 2, the seat 15 for retaining the peripheral portion 13 of the central plate 7.

Preferably, in order to precisely define the resting position of the panel 2 on the frame 4, regardless of the possible tolerances of the size of the central slab 7 due to the production process, at least one support bracket 22 is provided, fixed on the lower crosspiece 50 of the frame 4. Preferably, the lower crosspiece 50 is provided with two or more support brackets 22 for the panel 2 to the frame 4 (for example two in number) spaced apart.

Each support bracket 22 protrudes from a corresponding opening 23 provided on the bottom 17 of the seat 15 and is designed to abut the outer edge of the peripheral section 13 of the central plate 7.

The support brackets 22 allow to define precisely the position of the glass panel 2 with respect to the frame 4 or with respect to the lower crosspiece 50 of the frame 4.

More in detail, the aforementioned support bracket 22 is equipped with a base portion 24 connected with a stem 25 to a support portion 26 which protrudes from the opening 23 from the bottom 17 of the seat 15 to support the outer edge of the section peripheral 13 of the central plate 7 supporting the panel 2.

Advantageously, the base portion 24 of the support bracket 22 is fixed to the outer peripheral face 4 of the frame 4 by means of first fastening means consisting for example of at least one screw 27, a rivet or similar means. At least one spacer element 28 is interposed between the base portion 24 of the support bracket 22 and the external face of the frame 4. support of the central plate 7 on the frame 4 or on the support portion 26 inserted in the seat 15.

The frame 4 is made up of two crosspieces and two uprights mechanically connected to each other at the ends to form corner joints by means of metal connection brackets 60, which are inserted in engagement relationship in the cavities of the side portions 19, 20 contiguous of crosspieces and uprights to which the aforesaid brackets are advantageously fixed, for example by means of screws inserted in holes 40 obtained at the ends of the same portions of the uprights and crosspieces of the frame 4.

If for mainly aesthetic reasons the window frame 1 needs to have at least one visible face completely made of glass or with a side plate 5, 6 which extends to complete coverage of the corresponding side face of the frame 4, then the aforementioned side plate 5, 6 of the panel 2, i.e. the external one 5 or the internal one 6, extends, like the central plate 7, outside the double-glazed unit beyond the channel 8, 9 separating the central plate 7 and beyond the relative sealing layer 12 for a second section peripheral 29 which covers the corresponding side face of the frame 4.

In this case, to improve the mechanical solidity of the panel 2, that is the anchoring between the glass sheets 5, 6 and 7, a support element 30 can be advantageously provided equipped with at least one support portion 31, destined to go resting on the perimeter edge (the thickness) of the aforementioned second peripheral section 29 of the considered side plate 5 or 6, and of at least one anchoring portion 32 mechanically connected by second fastening means 33 to the frame 4.

In particular, if it is the external side plate 5 of the glass panel 2 that extends to cover the external side face of the frame 4, then advantageously the anchoring portion 32 of the support element 30 will be fixed by means of the second means fixing 33 to the outer peripheral face 4 'of the outer hollow side portion 20 of the frame 4.

In accordance with an advantageous feature of the invention, the anchoring portion 32 has a stepped portion 34 with a shape homologous to that of the lateral edge 35 of the external lateral portion 20 of the frame 4 to provide a shape coupling that allows to define the at the same time both a precise positioning of the support element 30 on the frame 4 and a more firm anchoring of the same support element 30 to the frame 4.

If it is the internal side plate 6 of the glass panel 2 that extends to cover the internal side face of the frame 4, then advantageously the anchoring portion 32 of the support element 30 will be fixed by means of the second fixing means 33 to the internal peripheral face 4â € ™ â € ™ (i.e. facing the corresponding double glazing) of the internal side portion 19 of the frame 4.

In accordance with an advantageous feature of the invention, in the latter case the support element 30 has a substantially Z-shape with the support portion 31 and the anchoring portion 32 substantially parallel to each other and joined by a connection portion 36. The latter develops parallel to the internal plate 6 of the panel 2, and is for a portion of it interposed between the latter and the internal side portion 19 of the frame 4.

Advantageously, a first and a second gasket 37, 38 are provided respectively interposed between the frame 3 and the external and internal lateral glass plates 5 and 6 of the panel 2.

Preferably, the frame 4 is provided in correspondence with its side towards the inside of the building and on its outer peripheral face 4 with a longitudinal groove 39 able to hold the second gasket 38 in engagement relationship, which extends for a portion behind the second peripheral portion 29 of the internal side plate 6.

Advantageously, from the external peripheral face 4 of the external lateral portion 20 of the frame 4 extends a longitudinal rib 41 intended to receive a third gasket 42 fixed to the frame 3 (and preferably to a protective frame 43 fixed to the face external side of the frame 3) and on which leaf 1 is intended to close.

The invention thus conceived therefore achieves the intended aim and objects.

Obviously, in its practical embodiment, it may also assume forms and configurations other than the one illustrated above, without thereby departing from the present scope of protection. Furthermore, all the details may be replaced by technically equivalent elements and the shapes, dimensions and materials used may be any according to requirements.

Claims (12)

CLAIMS 1. Window frame comprising: - a panel (2) equipped with at least three glass plates (5, 6, 7) rigidly fixed parallel to each other and comprising an external side plate (5), an internal side plate (6) and a central plate (7) interposed between said side plates (5, 6) and separated from them by means of a first and a second channel (8, 9), respectively, suitable for defining a corresponding first and second double glazing (10, 11); - a frame (4) fixed perimeter to said panel (2) and intended to support the panel (2) with respect to a frame; characterized in that the central plate (7) of said panel (2) extends at least from its lower side out of said double-glazed units (10, 11) for at least a peripheral portion (13); said frame (4) comprises at least one lower cross member (50) provided with a seat (15) delimited by at least two parallel longitudinal walls (16) and by a bottom (17) placed to connect said longitudinal walls (16); said seat (15) containing a sealing bead (18) and being engaged by the peripheral portion (13) of said central plate (7) embedded in said sealing bead (18) to support said panel (2). 2. Door or window frame according to claim 1, characterized in that the peripheral portion (13) of said central plate (7) extends perimetrically outside said double-glazing (10, 11) and correspondingly the seat (15) of said frame ( 4) extends around the perimeter to receive the peripheral section (13) of said central plate (7) over the entire perimeter. 3. Door or window frame according to any one of the preceding claims, characterized in that said frame (4) comprises two hollow side portions (19, 20), one of which is internal and one external, arranged opposite to said double glazing (10, 11) and connected from a central portion (21) provided with said seat (15). 4. Door or window frame according to any one of the preceding claims, characterized in that it comprises one or more support brackets (22), fixed to at least one lower crosspiece (50) of said frame (4), arranged protruding from corresponding openings (23) provided on the bottom of the seat (15) of said frame (4) and able to receive in support the outer edge of the peripheral portion (13) of said central plate (7). 5. Frame according to claim 4, characterized in that said support bracket (22) is equipped with a base portion (24) connected with a stem (25) to a support portion (26) protruding from said opening ( 23) in said seat (15) and adapted to support the outer edge of the peripheral portion (13) of said central plate (7), said base portion (24) being fixed to the outer peripheral face of said frame (4) by means of at least one screw (27). 6. Door or window frame according to claim 5, characterized in that at least one spacer element (28) is interposed between the base portion (24) of said support bracket (22) and the outer peripheral face of said frame (4). 7. Door or window frame according to claim 3, characterized in that said frame (4) is formed by two crosspieces and two uprights mechanically connected to each other by means of brackets inserted in said hollow side portions (20, 21) and engaged thereto. 8. Door or window frame according to any one of the preceding claims, characterized in that at least one lateral glass plate (5, 6) of said panel (2) extends outside the corresponding double-glazed unit (10, 11) for a second peripheral section (13), said window frame comprising at least one support element (30) equipped with a support portion (31), intended to rest on the outer perimeter edge of the second peripheral section (13) of said lateral glass plate (5, 6) and an anchoring portion (32) mechanically connected by second fixing means (33) to said frame (4). 9. Door or window frame according to claims 3 and 8, characterized in that said external side plate of said panel (2) extends outside the corresponding double-glazing unit (10, 11) for said second peripheral section (13), the anchoring of said support element being fixed by means of said second fastening means to the outer peripheral face of the outer lateral portion of said frame (4). 10. Window frame according to claims 3 and 8, characterized in that said internal side plate (6) of said panel (2) extends outside the corresponding double glazing (10, 11) for said second peripheral section (13), the anchoring portion (32) of said support element (30) being fixed by said second fixing means (33) to the internal peripheral face of the internal lateral portion of said frame (4). 11. Frame according to claim 1, characterized in that a longitudinal rib (41) extends from the external peripheral face of said frame (4) intended to receive a third gasket (42) fixed to a frame on which said frame is It is destined to close. 12. Frame according to claim 10, characterized by the fact that said support element (30) is equipped with a connecting portion (36) which develops parallel to said internal plate (6) and is interposed between this The last and said internal lateral portion (19) of said frame (4), which connects said support portion (31) and said anchoring portion (32) substantially parallel to each other.