DESCRIPTION

The present invention relates to a junction element for an insulating single-block made of brick, according to the general part of claim 1 ; the invention also relates to the single-block that uses such an element.

It is known that in construction, among the different thermal insulation systems of buildings, the one of making walls provided with a gap of insulating material is widespread. Specifically, this concerns the ones made with two layers of bricks, between which there are inserted sheets of thermal insulating or thermal/acoustic insulating material.

In the current prior art, to facilitate and expedite the construction of insulating walls, the use is widespread of preassembled single-blocks composed of two brick elements, with interposed an insulating material element, mutually held by means of a junction element which engages with its two ends in the two aforesaid and opposed brick elements.

By way of example, Italian Patent Document PD1998U000091 is mentioned, where there is described a fastening element for making blocks composed of bricks alternating with a layer of insulating material.

Again by way of example, the construction solution achieved by "Fornaci di Masserano" (Italy) is also mentioned, which produce a single-block composed of three elements joined by means of a hook mounted on an insulating panel, composed of four steel clips which join firmly to the bricks, and of four steel through rivets which ensure the union between the clips, the distance between the clips and therefore between the two brick blocks being kept constant by four spacers.

The most important document of the state of the art is however publication US 5809728 A.

In practice, the construction solutions described above and other similar ones have production drawbacks which limit the diffusion thereof.

By way of example, it is worth noting that in the single-block described in the patent document mentioned, the two opposed bricks should each have a pair of holes which, in order to allow the insertion of the two ends of the fastening element, should be positioned at well-defined distances, a condition that is difficult to obtain because said holes are made during raw clay drawing, whereby after the cutting of the individual pieces and with the drying of the material, the inter-axis of the holes varies in an unpredictable manner.

Alternatively, the pairs of holes are made directly on the finished bricks, but such operation is complex due to the possible breaking of the piece and especially due to the formation of dust.

In the construction solution provided by "Fornaci di Masserano", the making of several loose pieces, clips, rivets and spacers and the assembly thereof require complex operations which affect the economic cost of the final product.

It is the object of the present invention to make a preassembled single-block consisting of two brick elements with interposed an insulating material element, which does not have the drawbacks shown by similar products of known type. Such object is achieved by making a junction element between the two brick elements which is simple to make and does not require the need of holes at well-defined distances on said brick elements.

This is obtained with a junction element which has the features of the characterizing part of claim 1. Further features of the invention are found in the dependent claims. The junction elements according to the invention and the single-block using said junction element are defined in detail by means of a possible embodiment thereof, given only by way of non-limiting example, with the aid of the accompanying drawing tables, where:

- figures 1, 2 (Table I) depict two views, respectively, of the single-block and of the steps of making the same;

figures 3, 4 (Table II) depict two perspective views of the junction element, respectively, complete and subdivided into the component parts thereof;

figures 5, 6 (Table III) depict two views, respectively, plan and detailed views, of the single-block assembled;

figures 7, 8, 9 (Table IV) depict three views, respectively, perspective, plan and detailed views, of the brick element;

figures 10, 11 (Table V) depict two views, respectively, perspective and plan views, of the insulating element.

As shown in fig. 1, the insulating single-block made of brick - indicated with reference 100 - consists of two opposite brick elements 101, with an insulating material element 200 interposed.

As shown in fig. 2, junction elements - indicated with reference 1 - provide to mutually retain the two brick elements 101 and to support the insulating material element 200 by inserting the two ends of said junction elements in corresponding cavities 102 obtained on the aforesaid brick elements 101.

As shown in fig. 3, the junction element 1 consists of a single block obtained by moulding of plastic material, in which a longitudinal elongated body 2 is defined, such body ending with two ends provided with two fastening plugs 3.

As shown in fig. 4, the elongated body 2 conforms with a longitudinal wall 4, which is reinforced by means of a plurality of longitudinal ribs 5 projecting on the two major sides of said longitudinal wall 4; said elongated body 2 ends with two flanges 6 and 7, from which the two fastening plugs 3 project.

In particular, flange 6 - positioned on the larger size side of the elongated body 2 - has a larger size so as to abut on the brick element 101.1, while the flange 7 - positioned on the smaller size side of the elongated body 2 - has a smaller size so as to fit in the cavity 102 of the other brick element 101.2 (see fig. 5).

Moreover, the elongated body 2 has a converging development, starting from the side of the larger size flange 6 and tapering up to the smaller size flange 7.

The two fastening plugs 3 consist of a body 8, of substantially parallelepiped shape, provided with first microfins 10 on the two major walls 9, such microfins projecting from the wall 9 and extending for almost the whole height of said wall.

In particular, to facilitate the introduction of the fastening plugs 3 in the corresponding cavities 102 located on the two brick elements 101, the body 8 ends with a tapered part 8.1 and with at least one pair of second microfins 10.1 which have smaller size with respect to the first microfins 10.

As shown in figures 7 to 9, the cavities 102 located on the brick element 101 consist of longitudinal channels obtained during the step of wet clay drawing, the two opposite walls 103 being provided with microasperities 104 to increase the adhesion action with the microfins 10 which, due to elastic deformation, fit in the gaps of said microasperities (see fig. 6), thus ensuring the sealing of the whole single-block 100. Lastly, as shown in figures 10 and 11, the insulating material element 200 consists of a body provided with through holes 201 to allow its insertion in the junction element 1, and has a thickness "S" equal to the length of the longitudinal body 2 of the aforesaid junction element.

It is apparent from that described above that the object of the invention has been achieved, thus permitting to obtain a compact single-block 100 that is easy to make. The shapes, sizes and materials may be varied in the practice of implementation according to contingent needs, so long as they all fall within the inventive concept defined by the following claims.