EP1213219B1 - Fixing frames for water and fireproof closure elements using an adhesive process - Google Patents

Description

The present invention relates to the fixing of chassis for elements of fireproof and waterproof closure, using a gluing process. According to the known technique, wherever there are partitions for example of classes A30 and A60 in naval structures, or partitions which must withstand a certain load of water, when said partitions are breakthroughs, their characteristics must be restored.

According to the known technique, specific closure elements are used, depending on the situation. Said closing elements, which it doors, windows or shutters of different types, are mounted on chassis with varying rebate, depending on the required characteristics.

According to the known technique, the frames are welded to the partition with a continuous metal welding on one side and spot metal welding on the other side.

Because of this double weld, it is necessary that the thickness of the sheet of the chassis is not less than 5 mm., in order to avoid any risk of unwanted deformation. Indeed, especially in the case of ships, it does not remember that - when mounting the chassis - the ship is in construction, that during the armament phase, the ship undergoes deformations as a whole, that the ship is continuously in movement, reason why even the chassis are deformed due to their installation by welding and, consequently, the doors will then present problems with the functioning of opening and closing. Thereafter, it will therefore be essential to intervene again to reinstall them.

Therefore, some of the disadvantages that arise are precisely attached to the fixing system by welding.

A further disadvantage of fixing the chassis by welding, according to the known technique, is due to the costs of said welding operation and by weight, since, in order to be able to carry out the metal welding of the chassis, chassis with a thickness greater than 5 mm must be used., in order to avoid that the deformations mentioned above are more and that the resulting disadvantages are even more serious.

There is a patent EP-A-0937931, from the same inventor, which describes a dam openings for the passage of pipes and / or conduits and / or cables electrical through naval divisions, obtained by insertion on the perimeter opening of anchor clips, by dabbing the remaining lights free by means of modular filling elements, by the covering final with an incombustible and elastic sealing material. The downside of this patent is that the openings for the passage of pipes etc. are barred in a stable and fixed manner, while the object of the present invention is precisely to fix frames on partitions for closing elements firebreaks that can be opened, such as doors, windows or shutters.

Patent DE2758430A provides for the attachment of a sliding door to the chassis a door, already assembled, in order to obtain insulation flame and fire resistant, acoustic and thermal, used in civil sector for stable structures, such as doors cold rooms. Adhesion between the profile for sliding of the door and the door frame is made using foam binder and sealant, arranged to fill all the existing empty space between the profile and the door frame. Among others, it presents the disadvantage of a necessary predisposition of the structures to which it must fix the profiles and the difficulty of inserting the foam inside empty space. Said patent is also limited to the solution of mounting a sliding door, while the object of the present invention is to fix a any type of chassis, directly on partitions for all types openable element, even casement. Closing elements are subject to very different constraints compared to those a sliding door; for example they can be slammed violently at because of a draft. Furthermore, the method described herein request is intended in particular for use on board ships where necessarily adopt precautions and materials that prevent the detachment of structures, even when these are subject to warping, due to the deformations undergone by the ships.

Patent FR-A-2732066 describes the method of mounting a door block fireproof in a partition. The wall studs are fixed by screwing. In the profile is inserted a plaster lining as fireproof lining. To fix the plaster strip to the frame is used a layer of adhesive material consisting of an adhesive strip which covers the exposed side of the tabs and protects the corners and edges bright. However, said embodiment still provides for the use of screws and bolts for fixing the uprights and it is not water resistant and, in addition, the fragile sono plaster trimmings and therefore do not are not suitable, for example, to be fitted in the naval sector.

Patent EP-A-0969072, from the same inventor, describes a technique for insulation and fire protection of metallic structures, with products that are applied to surfaces like varnish. employment of said products is not suitable for welding chassis to partitions.

All the disadvantages mentioned have been eliminated by adopting the system fixing by gluing, according to the present invention.

The purpose of the present invention is to provide a system for fixing the chassis that is both resistant and light.

For this purpose, the known system of welds has been replaced by a new one. system which foresees the gluing of the frames on the partitions; said sizing must be able to restore the characteristics of the partitions on which they are set.

Some of the many benefits you get with this invention are as follows.

With the present invention, a more stable chassis attachment is obtained and durable, because of the absence of deformations.

In addition, it is possible to reduce the weights, which on board ships is always essential, since the material used is lighter due to compared to that of metal welds and, in addition, one can use a sheet thinner for the chassis, the latter not being deformed by the welds.

Finally, the application by gluing is simpler than that by welding; therefore the system is less expensive, both when assembly phase only afterwards, because the maintenance costs are lower.

1) Un produit scellant inorganique thermorésistant, à base de fibres et d'oxydes minéraux.

2) Un produit scellant polyuréthanique structurel, élastique, résistant à l'eau et au feu.

To achieve the pre-established goal, two different types of sealants are used in succession:

1) A heat resistant inorganic sealant, based on fibers and mineral oxides.

2) A structural, elastic, water and fire resistant polyurethane sealant.

These two sealants must be superimposed. That is to say, it will take previously apply the heat-resistant inorganic sealant, which must then be covered with the water resistant product.

Indeed, the frames on which the closure elements are mounted often have to fulfill two functions; their union with the partitions must resist fire and, if necessary, it must resist the passage of water.

The heat resistant inorganic sealant should be applied with a continuous cord along the entire perimeter, on both sides, possibly after having fixed the chassis to the partition by means of a few solder points. Next, the structural polyurethane sealant water resistant will be placed on this cord, until it is totally covered.

la fig. 1 illustre la vue frontale d'une porte montée sur un châssis;

la fig.2 est une section agrandie du châssis tout seul, selon un plan vertical;

la fig.3 est une section agrandie du châssis tout seul, selon un plan horizontal.

All the aforementioned advantages and others still will become evident in the description of the following figures, attached only by way of illustration and not limiting, in which:

fig. 1 illustrates the front view of a door mounted on a frame;

fig.2 is an enlarged section of the chassis alone, along a vertical plane;

fig.3 is an enlarged section of the chassis by itself, in a horizontal plane.

In the various figures, similar elements have been indicated with the same numeric symbols.

In Figure 1 has been shown a door 13 with a single leaf, fixed on the chassis 12, with a rebate 14.

In Figures 2 and 3 is indicated a partition 10 which, below, can be find in correspondence of a stanchion 11, to which the chassis was fixed 12.

In the figures, the chassis has been shown with a depth relatively large, to allow its application even on gutted partitions, making it protrude differently on one side and the other.

In fact, the hollowed-out partitions consist of a sheet, folded according to a certain shape, and they have the advantage of having a resistance module similar to that of a smooth partition reinforced with uprights, in avoiding however the welds of the uprights and an increase in weight.

According to the invention, as illustrated in FIGS. 2 and 3, along all of the perimeter of the parts in contact between the chassis 12 and the partition 10, and possibly the stanchion 11, they are glued by placing a bead of heat-resistant inorganic sealant based on fibers and oxides minerals, possibly after having fixed the chassis 12 against the partition 10 with a few solder points. The sealing bead is applied so continuous on both sides, on the outer side of the chassis, indicated in drawings by the number 15, and always continuously, even on the internal side of the chassis, indicated by the number 16.

Said heat-resistant inorganic sealing bead can be advantageously constituted by the product known under the name NAVYCROSS M, which is an incombustible material and elastic, consisting of a single-component product, based on fibers.

The heat-resistant inorganic sealing bead 15, 16 must then be completely covered by a structural polyurethane sealant, elastic, water and fire resistant.

The present invention includes all of the detailed variants and modifications that may seem obvious to an industry technician and which do not depart from the scope of the present invention but must therefore be considered to be within the scope of the claims following.

Claims (2)

1. Process for fixing frames (12) on bulkheads (10) for water and fireproof closure elements, characterized by the fact that the frames (12) are glued on the bulkheads (10) by means of sealants and that two types of different sealants are employed in sequence, namely an inorganic heat-resistant sealant with a fiber and mineral oxide base is initially applied, which is then covered with a structural polyurethane sealant which is resilient, as well as water and fireproof.
2. Procedure for fixing frames (12) on bulkheads (10), according to claim 1, characterized by the fact that the sealants are applied in a seamless bead on both sides (15, 16), along the full perimeter of the joining portions between the frame (12) and the bulkhead (10), or the coaming (11), possibly after having fixed the frame (12) on the bulkhead (10) by tack welding.

Images