ITBS20100047A1 - PROFILES FOR SECURITY FRAMES, IN PARTICULAR OF THE FIELD OR SIMILAR TYPE - Google Patents

Description

â € œPROFILES FOR SAFETY WINDOW FRAMES, IN PARTICULAR OF THE FIRE RESISTANT TYPE OR SIMILAR â €

DESCRIPTION

Field of application

The present invention is generally applicable to the technical sector of profiles and frames for doors and windows and particularly has as its object a profile for a frame of safety doors and windows.

More in detail, the object of the invention is a profile for a frame of fire-resistant, smoke-proof, flame-resistant, emergency exit or similar type of windows.

State of the art

Among the known security doors and windows, some particularly common types are those of fire, smoke, flame or similar doors or doors for emergency exits. These windows and doors are used as part of fire and high temperature resistant barriers in all situations in which it is necessary to compartmentalize buildings in order to avoid the spread of fires from one sector to another.

For example, they are used between boiler rooms or car shelters and the rest of a residential building, between different sectors in parking lots, in hotel facilities, in hospitals, in schools, in exhibition rooms, in all buildings accessible to public.

Fire-rated or similar doors and windows generally consist of a frame, also known as a false frame, generally embedded inside the supporting wall of the opening to be closed, a window frame associated with the false frame, for example with screws, a closing element associated with the frame of the window or door. This closing element can consist of one or more opening doors and / or fixed elements. In both cases they can include a door frame with both aesthetic and structural functions and infill portions for example in glass Obviously these glasses are of an appropriate size to withstand high temperatures and fire.

In the case of a glazed fire door applied to a masonry wall, the false frame is embedded in the masonry, the frame of the window is the door frame, the frame of the closing element is the frame of the door, the infill is made up of a multilayer glass plate.

The frames of both the door and the leaf are built by the window maker starting from semi-finished straight elements generally sold in lengths of six meters and called profiles, usually composed of one or more straight elements called profiles.

In the remainder of the present patent, the terms "frame or frames" mean both the frame of the window or door and the frame of the closing element or leaf.

In any case, known profiles comprise one or more metal profiles in which one or more hollow box-like bodies are identified which allow a predetermined degree of thermal insulation. The connection between the parts of the box-like bodies is often made up of thermally insulating material in order to increase the overall thermal insulation. Furthermore, often the inside of the box-shaped bodies is also filled with thermally insulating material in order to further increase the insulating effect.

However, known profiles have some recognized drawbacks.

In the first place, the fact that the metal sections that compose them include several box-like bodies joined by thermally insulating material makes their realization complex and expensive.

Furthermore, the insertion of thermally insulating materials inside, having to be carried out during the construction of each individual profile, involves the increase in construction costs as well as, frequently, also the compromise, during the construction of the frames. , of the thermal insulation contained. The profiles, in fact, must be cut to size and welded together to form the frames and then painted. Both of these operations involve heating the profiles themselves. The thermal insulation counteracts this heating, making the welding operation more difficult and forcing the fabricators to increase the welding and drying temperatures of the painting. Furthermore, even at low temperatures, many thermal insulating materials undergo radical transformations that compromise their future functionality.

For these reasons, in known profiles silicates of alkaline earth metals are generally used as insulators, in particular calcium silicate, aluminum silicates, expanded conglomerates based on hydraulic binders.

To avoid these drawbacks, hollow profiles are also known which have inside them protrusions for fixing the insulation so as to allow it to be spaced from the external walls subject to welding and painting. If on the one hand this solution allows to overcome the previously mentioned drawbacks, on the other hand it involves an increase in the executive complexity and construction costs as well as considerable difficulties in assembling the internal hardware, such as locks and handles, approved and normally present on the market.

Presentation of the invention

The object of the present invention is to at least partially overcome the drawbacks highlighted above by providing a profile for safety door and window frames that is easy to make and of no higher cost than known profiles for equivalent frames.

Another object of the present invention is to make available a profile for hollow safety window frames containing insulating material without this constituting a problem for the welding or painting.

Furthermore, according to another purpose of the invention, the same profile is such as to allow the above-mentioned welding and painting without transforming or degrading the insulation.

A further object of the invention is to provide a profile for safety door and window frames that allows to use not only alkaline earth metal silicates, but also different types of insulators.

A further object of the invention is to make available frames which are easy to build and, with suitable gaskets, are air, water and wind tight at costs no higher than those built with profiles according to the known art.

These purposes, as well as others which will appear more clearly in the following, are achieved by a profile for safety door and window frames, in particular fire and / or emergency exit frames, according to the main claim. Advantageous embodiments of the invention are defined in accordance with the dependent claims.

In particular, the profile for frames of the invention may comprise a plurality of metal profiles connected to each other and internally hollow so that the cavities constitute means of thermal insulation.

According to an aspect of the invention, at least one section may comprise an internally hollow elongated element having a first and a second face substantially parallel and intended to define the visible faces of the section. safety window during use.

According to another aspect of the invention, the elongated element may have a substantially U-shaped plan throughout its length to define a longitudinal space.

According to a further aspect of the invention, the section may also comprise additional insulating means arranged at least at the bottom of the U.

According to another aspect of the invention, the longitudinal compartment may comprise side walls consisting of a third and a fourth faces substantially parallel to each other and facing the first and second faces of the elongated element. Furthermore, there may be a back wall consisting of a fifth face substantially perpendicular to the third and fourth faces. The additional insulating means can therefore be associated at least with this fifth face.

In other words, according to the invention, the profile may comprise at least one section in which there is a single U-shaped box-shaped body and in which, at the bottom of the U or the fifth face, there are additional insulating means. This implies a particular ease of execution of the proposed profile together with the possibility of increasing the thermal insulation offered without having to add internal protrusions or other.

In particular, the additional insulating means may comprise a plurality of openings made at least on the fifth face, or at least one layer of a first insulating material coupled to the fifth as well as, possibly, to the third and / or fourth face. Furthermore, the additional insulating means may comprise a shaped body of which at least a portion is made with the aforementioned first insulating material. In the latter case, the shaped body may have a substantially "U" shape in plan to be coupled to the fifth, third and fourth faces.

In each of the cases just described, therefore, the additional insulating means are advantageously associated with the fifth face without having to involve the first and second faces and without having to provide for the presence of elements protruding inside the elongated hollow element.

Brief description of the drawings

Further characteristics and advantages of the invention will become more evident in the light of the detailed description of some preferred, but not exclusive, embodiments of a profile for frames for security doors and windows, in particular of the fireproof or emergency exit type, according to € ™ invention, illustrated by way of non-limiting example with the aid of the attached drawing tables in which:

FIG. 1 shows a front view of a door frame and door frames according to the invention;

FIGS. 2 to 6 show details of the profiles constituting the frames of FIG. 1.

Detailed description of some preferred embodiments With reference to figs. 1 and 2, it is possible to observe a frame 1 of a safety window, for example of a glass door with two leaves, and the door frames 2. These windows generally include locks S or panic bars with vertical closing rods A.

The frames 1 and 2 comprise a plurality of metal profiles connected to each other and internally hollow so that the cavities constitute means of thermal insulation.

According to an aspect of the invention at least one profile 5, which can also be seen in fig. 3, comprises at least one section 6 which is internally hollow and having a first face 7 and a second face 8 substantially parallel and intended to define the visible faces of the safety window during use. Said first face 7 and second face 8 are also the faces on which the welds are carried out, to join together the parts of the profiles, as well as the paints.

In the figures it can be seen that the profile 5 comprises a single profile 6. This embodiment is to be understood as non-limiting for different embodiments where the profile includes several profiles.

According to another aspect of the invention, the profile 6 has a substantially U-shaped plan view along its entire length to define a longitudinal compartment 10.

The latter also has sufficient dimensions to removably house at least the vertical rods A of the lock S or of the panic bar during use to make them easily accessible for maintenance or replacement by an operator.

In fact, it is known that doors and windows that use locks with multiple locking points and including the aforementioned rods are affected by the drawback that, in the case of maintenance of the lock itself, which is compulsory at set deadlines, it is often necessary to remove the door. from its seat, with a serious expenditure of physical energy and time, in order to allow the removal of the bars.

In the case of a fire door, whose weight is notoriously high, the intervention of more operators is even necessary, with a further increase in maintenance costs.

Although the windows generally do not present the problem of the floor and ceiling being close together, even for them the removal of the rods is difficult, especially for the upper one which forces the operator to carry out maintenance operations on a floor higher than the floor. trampling with consequent inconvenience and risks.

In the case of the invention, on the other hand, the removal of the lock S and the rods A takes place without having to remove the door from its position as these parts are directly accessible in the longitudinal compartment 10.

According to another aspect of the invention, the longitudinal compartment 10 comprises side walls consisting of a third 11 and a fourth face 12 substantially parallel to each other and facing the first 7 and the second face 8 of the section 6. Furthermore, there is a wall bottom 13 of the longitudinal compartment 10 consisting of a fifth face 14 and a sixth face 23 joining the first 7 and second face 8. It is observed, even if this is not to be understood in a limiting sense, that the fifth face 14 is substantially perpendicular to the third 11 and the fourth face 12, while the sixth face 23 is substantially perpendicular to the first 7 and the second face 8.

According to a further aspect of the invention, the section 6 comprises additional insulating means 15 arranged at least at the bottom of the U, ie at least at the fifth face 14.

More in detail, the additional insulating means 15 comprise a shaped body 16, which can also be seen in fig. 4, which has a substantially â € œUâ € shape in plan to couple to the bottom of the U of the section 6, that is to the fifth 14, to the third 11 and to the fourth face 12. This allows to constrain the additional insulating means 15 inside of the section 6 without having to foresee the presence of protrusions or other that would complicate its realization.

Furthermore, the shaped body 16 can have a plan width lower than the plan width of the profile 6 so as to define two compartments 18, 19 between the shaped body 16 itself and the first 7 and the second face 8.

This allows, advantageously, to be able to determine the thermal insulation offered by varying the dimensions of the additional insulating means 15 at will. Furthermore, being separated from the faces of the profile 5 subject to strong temperature variations due to welding and painting, they do not offer resistance to such heating and allow to carry out the above operations easily and at lower temperatures and times. Furthermore, the additional insulating means 15, if they are made of thermosensitive materials, do not undergo harmful transformations, as happens in the known art. It follows that in this way it is also possible to use insulating materials other than alkaline earth metal silicates, mineral wools of glass, rock, basalt or similar unbound, but also mineral wools of glass, rock, basalt or similar bound with organic binders. or with alkaline silicates, polymeric material chosen from the group consisting of thermosetting resins such as furanic, phenolic, unsaturated polyesters, polyurethanes, thermoplastic resins, possibly cross-linked, such as polyolefins, polyamides, aromatic polyamides, polyphenyl ether, polyetherimide, silicone polymers, their mixtures or their alloys and / or their foams, composites of thermosetting resins with man-made fibers such as glass, carbon, Kevlar, steel, or similar, or natural ones such as hemp, kenaf, linen, bamboo, or similar.

According to a preferred embodiment, the additional insulating means 15 comprise polymeric compositions based on or comprising materials of natural vegetable origin, and therefore from renewable sources, such as resins based on tannins or condensed tannins, tannins with furfuryl alcohol, copolymers such as tannins-formaldehyde-alcohol furfuryl, tannins-resorcinol-formaldehyde, tanniniphenol-formaldehyde, furan resins obtained by polycondensation of furfuryl alcohol, their mixtures and / or their foams.

Intumescent systems and / or expanding systems can also be used comprising expanding graphite or containing expanding silicates such as vermiculite or the like both in natural and expanded form or silicates such as talc, mica, kaolinite or the like. Alkaline silicate-based systems can advantageously be used, for example obtained by gelling solutions of sodium and / or potassium silicate with colloidal silica as well as airgels.

According to another aspect of the invention, the additional insulating means 15 comprise in combination or alternatively also a plurality of openings 16a made at least on the fifth face 14. The same openings 16a can obviously also involve the sixth face 23, the third 11 and the fourth face 12. According to further executive variants, not shown in the drawings, the additional insulating means can comprise one or more layers of insulating polymeric material coupled to the fifth, third and / or fourth face. Further variants can be obtained with combinations of the embodiments described up to now.

According to a further aspect of the invention, the profile 5 comprises, as can be seen in fig. 5, a covering element 20 of the longitudinal compartment 10. This allows, in the first place, to shelter everything that is inserted in the longitudinal compartment 10 starting from the lock S, thereby extending its functionality.

Furthermore, another advantageous aspect is that the covering element 20, in addition to being made of metallic material, can also be made of a second polymer-based material suitable for increasing the thermal insulation offered by the profile 5. Typically this second polymeric material is chosen from the group consisting of thermoplastic materials such as polyamides, aromatic or partially aromatic polyamides, polyolefins, polyolefin copolymers for example with vinyl acetate, acrylate, polyurethanes, or thermosetting materials such as phenolic resins, phenol-formaldehyde, furanic or composites thereof with natural or man-made fibers. Advantageously, the covering element 20 can be associated with an intumescent system and / or expanding graphite and / or vermiculite or the like, for example in the form of a gasket for complete sealing in the event of a fire.

The longitudinal compartment 10 also allows a further advantage to be obtained. The association of the window frame to the opening on the wall of the room or to the counter frame is generally done by means of special screws. More in detail, these screws fasten the frame of the window to the wall. However, in the known art they must be completely inserted into the frame itself to prevent them from remaining visible, ruining the aesthetic effect obtained. For this reason the frame is drilled with two different points, a first point to make a through hole having the diameter in accordance with the diameter of the screw body, and a second point with a larger diameter to widen a first section of the hole so that can accommodate the operating head of the screw. This operation is obviously complex and expensive.

With profile 5 of the invention it is no longer necessary as it is sufficient, as can be seen in fig. 6, make only the first hole with the first drill. Even if the head 21 of the screw 22 remains visible, in fact, it is in any case arranged inside the longitudinal compartment 10 and therefore the overall aesthetic effect is saved. Furthermore, when the cover element 20 is used, the head of the screw is no longer visible.

For what has been said so far, it is clear that the subject of the invention is also a frame for safety windows made with profiles as described above as well as a safety window, in particular of the fire, smoke, flame and / or emergency exit or similar, comprising frames in accordance with what has been described above. We do not proceed here with a complete description of these frames and windows because it would be repetitive of what has been said.

In light of the foregoing, it is understood that the profile for safety door and window frames of the invention achieves the intended purposes and, in particular, overcomes the drawbacks of the prior art being easy to make and costs no higher than the profiles for known equivalent frames.

Furthermore, the proposed profile can be hollow and contain insulating material without this constituting a problem for the welding or painting and without these operations inducing transformations of the insulator.

The profile for safety door and window frames according to the invention is susceptible of numerous modifications and variations, all of which are within the inventive concept expressed in the attached claims. All the details may be replaced by other technically equivalent elements, and the materials may be different according to requirements, without departing from the scope of the invention.

Even if the profile for safety door and window frames has been described with particular reference to the attached figures, the reference numbers used in the description and in the claims are used to improve the intelligence of the invention and do not constitute any limitation to the scope of protection. claimed.

Claims (12)

â € œPROFILES FOR SAFETY WINDOW FRAMES, IN PARTICULAR OF THE FIRE RESISTANT TYPE OR SIMILAR â € R I V E N D I C A Z I O N I 1. Profile for safety window frames, in particular of the fire rated type or similar, comprising a plurality of metal profiles connected to each other and internally hollow so that said cavities constitute thermal insulation means, in which said profile (5) comprises at least an internally hollow section (6) having a first (7) and a second face (8) substantially parallel and capable of defining the visible faces of the safety window during use, said section (6) presenting for all its length substantially U-shaped in plan to define a longitudinal compartment (10), said profile (6) also comprising additional insulating means (15) arranged at least at the bottom of said U. 2. Profile for frames according to claim 1, wherein said longitudinal compartment (10) comprises lateral walls consisting of a third (11) and a fourth face (12) substantially parallel to each other and facing said first (7) and said second face (8) of said profile (6), said longitudinal compartment (10) also comprising a bottom wall (13) consisting of a fifth face (14) substantially perpendicular to said third (11) and fourth face (12), said additional insulating means (15) being associated at least with said fifth face (14). Frame profile according to claim 2, wherein said additional insulating means (15) comprise a plurality of openings (16a) made at least on said fifth face (14). Frame profile according to claim 2 or 3, wherein said additional insulating means comprise at least one layer of a first insulating material coupled to said fifth and to said third and / or fourth face. Frame profile according to one or more of claims 2 to the previous one, in which said additional insulating means (15) comprise a shaped body (16) of which at least a portion is made with a first insulating material, said shaped body ( 16) having a substantially "U" shape in plan to couple with said fifth (14), said third (11) and said fourth face (12). 6. Profile for frames according to claim 5, wherein said shaped body (16) has a plan width lower than the plan width of said profile (6) to define two compartments (18, 19) between said shaped body (16) and respectively said first (7) and said second face (8). Frame profile according to one or more of claims 4 to the previous one, wherein said first insulating material is selected from the group consisting of alkaline earth metal silicates, mineral wools, glass wool, polymeric material selected from the group consisting of composition polymer based or comprising materials of vegetable origin, thermosetting resins, thermoplastic resins, silicone polymers, their mixtures or their alloys and / or their foams, thermosetting resin composites with man-made fibers and / or natural fibers, intumescent systems, alkaline silicate based expanding systems. 8. Profile for frames according to claim 7 wherein said polymeric composition based on or comprising materials of vegetable origin is selected from the group comprising resins based on tannins or condensed tannins or tannins with furfuryl alcohol, tanniniformaldehyde-furfuryl alcohol, tannin-resorcinol copolymers -formaldehyde, tannins-phenol-formaldehyde, furan resins obtained by polycondensation of furfuryl alcohol, their mixtures and / or their foams. Profile for frames according to one or more of the preceding claims, wherein said at least one profile (5) comprises a covering element (20) of said longitudinal compartment (10) made of metallic material, respectively a second polymeric material. 10. Profile for frames according to the preceding claim, wherein said second polymeric material is selected from the group consisting of thermoplastic materials such as polyamides, aromatic polyamides, polyolefins, polyolefin copolymers, or thermosetting agents such as polyurethanes, phenolic resins, phenolic formaldehyde, furanic or composite thermosetting resins and natural or man-made fibers. 11. Frame for safety windows comprising a profile in accordance with one or more of the preceding claims. 12. A safety door or window, in particular of the fireproof type or the like, comprising a frame in accordance with the preceding claim.