WO2024110855A1

WO2024110855A1 - Fastening device of a structural component to a fixed structure of a building

Info

Publication number: WO2024110855A1
Application number: PCT/IB2023/061720
Authority: WO
Inventors: Igor PALTRINIERI; Giuseppe BESANA
Original assignee: Paltrinieri Igor; Besana Giuseppe
Priority date: 2022-11-24
Filing date: 2023-11-21
Publication date: 2024-05-30
Also published as: IT202200024237A1

Abstract

The fastening device (1) of a structural component to a fixed structure of a building comprises: fastening means (2) associated with a fixed structure (B) of a building, adapted to fasten the fastening device (1) to the fixed structure (B); a substantially hollow tubular holding member (11), adapted to hold a structural component (A) and associated with the fastening means (2) in a removable manner; a connecting bar (16) adapted to temporarily connect the tubular holding member (11) to the fastening means (2), to mutually block them and to make a "bayonet" coupling; anti-slip means (22) adapted to mutually block the tubular holding member (11) and the connecting bar (16) in a releasable manner.

Description

FASTENING DEVICE OF A STRUCTURAL COMPONENT TO A FIXED STRUCTURE OF A BUILDING

Technical Field

The present invention relates to a fastening device of a structural component to a fixed structure of a building.

Background Art

In the field of construction, especially during the setting up of a construction site, a structural component is usually associated with the fixed structure of a building in a removable maimer in order to promote the performance of works by operators and/or to ensure their safety and/or physical integrity.

For example, in order to safely perform work at height and to reduce the risk of an operator falling into the void, it is common practice to associate a parapet with the roof of a building and/or with the balcony walkway and/or with the staircase walkway.

The parapet consists of at least two vertical uprights which are fastened to the fixed structure of the building and to which are generally attached an upper tubular element, associated with the top of the uprights, a lower tubular element or foot stop, associated with the base of the uprights, and an intermediate tubular element associated with the uprights at an intermediate position between the upper tubular element and the lower tubular element.

The lower tubular element, the intermediate tubular element and the upper tubular element have substantially a horizontal development and are generally made of wood or of a metal material such as, e.g., steel.

In some cases, in order to carry out work at height safely, a protective device known as a safety line is used which consists of a metal cable that is attached to the roof of a building and to which operators are hooked through a carabiner clip. Again, in order to be able to carry out works on the facade of a building, a scaffolding is usually erected, which is a vertically developed lattice structure provided with horizontal decks on which workers move and which is anchored to the vertical wall of a building.

To date, the fastening of parapets, safety lines and scaffolding to the fixed structure of a building can be done through the use of different fastening devices. Parapets can be fastened through a clamp which is tightened around a horizontal plane such as, e.g., the balcony walkway.

However, the use of such fastening devices has some drawbacks that are mainly related to the difficulties encountered during their use.

For example, it is not possible to carry out works where the clamp fastening point is located, and therefore, it is necessary to remove the parapets and their fastening devices and to relocate them in place several times, causing a lengthening in the machining time as well as an increase in their cost.

Additionally, these procedures subject workers to conditions that are potentially hazardous to their health as they are forced to work at height without protection, both during the disassembly phase and the reassembly phase of the parapet.

The use of the fastening devices of mechanical type generally known as anchors is also well known.

Notoriously, an anchor consists of a casing, made of plastic or metal, which is inserted into a hole made in the fixed structure, and of a screw, which is associated with the parapet upright and screwed inside the casing.

Again, parapets can be fixed through the use of a fastening device of the chemical type generally known as a chemical anchor.

Chemical anchors comprise a metal bar, which is fastened to the fixed structure through the use of a chemical agent, and a screw which is screwed to the structural component to be fastened and inside the metal bar.

Anchor fastening devices, whether of the mechanical or chemical type, do however have some drawbacks which are partly attributable to the drawbacks suffered by the clamp fastening devices.

Again, it is in fact necessary to assemble and disassemble the parapet and its fastening anchors in order to carry out works at the parapet fastening points.

The use of a type of fastening devices is also known that differs from the types just described and consisting of a safety system comprising a set of fastening devices of the type of vertical uprights, in the form of ladders, and of props which are used to fasten a protective net to the perimeter of a floor of a building under construction.

The use of the fastening devices with which the aforementioned safety system is provided has, however, some drawbacks which are, at least partly, traceable to the drawbacks illustrated for the clamp fastening devices and for the fastening anchors.

Again, in fact, the fastening devices of the protective net are in the way during the execution of works involving the plane of fastening.

Therefore, it is necessary to disassemble and assemble the fastening devices and the protective net several times.

Description of the Invention

The main aim of the present invention is to devise a fastening device of a structural component to a fixed structure of a building which can be used conveniently and easily.

Another object of the present invention is to devise a fastening device of a structural component to a fixed structure of a building which does not have to be placed several times in place.

A further object of the present invention is to devise a fastening device of a structural component to a fixed structure of a building which also allows works to be carried out where the fastening device itself is located, without having to disassemble it.

Again, another object of the present invention is to devise a fastening device of a structural component to a fixed structure of a building which allows limiting the occurrence of situations that may be hazardous to the health and safety of workers.

Another object of the present invention is to devise a fastening device of a structural component to a fixed structure of a building which allows the aforementioned drawbacks of the prior art to be overcome within the framework of a simple, rational, easy and effective to use as well as affordable solution.

The aforementioned objects are achieved by this fastening device of a structural component to a fixed structure of a building having the characteristics of claim 1. of the Other characteristics and advantages of the present invention will become more apparent from the description of some preferred, but not exclusive, embodiments of a fastening device of a structural component to a fixed structure of a building, illustrated by way of an indicative, yet non-limiting example, in the attached tables of drawings in which:

Figure 1 is an axonometric, partly enlarged view of a fastening device according to the invention made according to a first embodiment;

Figure 2 is an axonometric detailed view of the fastening device in Figure 1; Figure 3 is an axonometric exploded view of the fastening device in Figure 1;

Figures 4, 5 and 6 are axonometric views of some components of the fastening device in Figure 1 at different stages of assembly;

Figure 7 is an axonometric view of a fastening device according to the invention made according to a second embodiment;

Figure 8 is an axonometric view of a fastening device according to the invention made according to a third embodiment.

Embodiments of the Invention

With particular reference to these figures, reference numeral 1 globally denotes a fastening device of a structural component to a fixed structure of a building.

Within the scope of this disclosure, the fastening device 1 has been considered to be used with the aim of associating a structural component A with a fixed structure B of a building.

Particularly, within the scope of this disclosure, it has been assumed that the fixed structure B is a flat wall arranged horizontally and provided with a first face C facing upwards and with a second face facing downwards.

For example, the fixed structure B is of the type of a balcony walkway. Particularly, the fixed structure B is made of reinforced concrete.

Again, within the scope of this disclosure, it has been assumed that the structural component A is of the type of a horizontal tubular element which is associated with the fastening device 1 to define, together with the latter, a parapet fastened to the walkway.

Additionally, two fastening devices 1 associated with the fixed structure B are shown in the figures.

These special descriptive choices should be viewed only in an illustrative and non-limiting maimer.

In fact, alternative uses of the fastening device 1 cannot be ruled out wherein e.g. it is associated with a fixed structure B of a different type such as, e.g., the walkway of a staircase or the facade or the roof of a building.

In this regard, it is worth highlighting that the fixed structure to which the fastening device 1 is attached can also be of the type of a prefabricated structure or a metal structure.

Still, alternative uses of the fastening device 1 cannot be ruled out wherein, e.g., it is used to fasten a different structural component A to the fixed structure B.

For example, the fastening device 1 can be used to associate a scaffolding with a building facade or to associate an insulation element of the thermal type with a building facade or a building roof.

Again, the fastening device 1 can be used to fasten a safety line to a roof of a building; in this case, the fastening device 1 holds the metal cable and defines, together with the latter, the safety line itself.

The fastening device 1 according to the invention comprises fastening means 2 associated with the fixed structure B of a building, adapted to fasten the fastening device 1 to the fixed structure B and comprising: at least one fastening base 3 associated with the fixed structure B; at least one receiving element 4 associated with the fastening base 3 and comprising at least one receiving slot 5; at least one substantially hollow tubular fastening member 6 associated with the receiving element 4 on the opposite side from the fastening base 3 and defining at least one access opening 7 accessible from the outside, the access opening 7 and the receiving slot 5 being substantially aligned along the axis of development E of the tubular fastening member 6.

According to the preferred embodiment shown in the figures, the fastening base 3 has a substantially cylindrical conformation and comprises a first open end and a second closed end. The first open end defines a hole 8 and the longitudinal axis of the fastening base 3 is arranged centrally to the hole 8.

Preferably, the receiving element 4 has a substantially plate-shaped conformation. In more detail, the receiving element 4 has a substantially rectangular conformation.

The receiving slot 5 develops longitudinally along the main axis of development of the receiving element 4.

The fastening base 3 is associated with the receiving element 4 so that the hole 8 faces the receiving element 4.

Precisely, the fastening means 2 comprise a connecting plate 3a placed between the receiving element 4 and the fastening base 3.

The tubular fastening member 6 has a substantially cylindrical conformation.

The access opening 7 is made where a longitudinal end portion of the tubular fastening member 6 is located.

The axis of development E is arranged centrally to the access opening 7.

The tubular fastening member 6 comprises an outlet opening 9 made where there is the longitudinal end portion of the tubular fastening member 6 opposite the longitudinal end portion of the tubular fastening member 6 where the access opening 7 is made.

The axis of development E is arranged centrally to the outlet opening 9.

The outlet opening 9 faces the receiving element 4.

The axis of development E is substantially orthogonal to the receiving element 4 and substantially coincident with the longitudinal axis of the fastening base 3.

The access opening 7, the outlet opening 9, the receiving slot 5 and the hole 8 are substantially aligned along the axis of development E.

Conveniently, the fastening means 2 comprise a plate-shaped connecting element 6a placed between the tubular fastening member 6 and the receiving element 4.

The fastening means 2 are associated with the fixed structure B so that the access opening 7 is accessible from the outside.

Conveniently, the fastening means 2 comprise at least one opening/closing element 10 of the access opening 7 alternately positionable in a closing position, where it is moved close to the access opening 7 to close it, and in an opening position where it is moved away from the access opening 7.

According to the preferred embodiment shown in Figures 1 to 6, the tubular fastening member 6, the receiving element 4 and the fastening base 3 are encompassed within the fixed structure B.

As previously described, the fixed structure B shown in Figures 1 to 6 is made of reinforced concrete.

As is familiar to the industry technician, in the construction of reinforced concrete structures, formworks, known as caissons, are used and filled with concrete casting and steel reinforcement.

Generally, caissons comprise a plurality of wooden walls mutually associated to define a container of the desired shape, usually of parallelepipedal conformation. According to the embodiment of the fastening device 1 shown in Figures 1 to 6, the fastening base 3 is fastened, by means of appropriate fastening screws, to one of the caisson walls.

The fastening base 3, the receiving element 4 and the tubular fastening member 6 are sized so that the access opening 7 is accessible from the outside once the caisson has been filled with concrete and reinforcement.

In this way, once the concrete has solidified only the access opening 7 remains visible from the outside.

In other words and as visible in Figure 2, the access opening 7 is made flush with the first face C and develops on the plane of lying of the first face C itself.

In this way, the fastening means 2 do not protrude from the fixed structure B and are not in the way of any work to be carried out in the proximity of the first face C and/or involving the latter.

Additionally, the special technical expedient of providing the fastening means 2 with the fastening base 3 prevents concrete from entering the receiving slot 5. With particular reference to the embodiment shown in Figures 1 to 6, the fastening means 2 are associated with the fixed structure B so that the access opening 7 faces upwards and the axis of development E is substantially vertical. Actually, with reference to the embodiment shown in the figures, the axis of development E is substantially orthogonal to the plane C.

Alternative embodiments of the fastening device 1 cannot however be ruled out wherein the fastening means 2 may be associated with the fixed structure B so that the axis of development E is substantially horizontal or alternatively oblique. Preferably, the tubular fastening member 6 and the fastening base 3 are made, at least partly, of plastic material.

The fastening device 1 according to the invention comprises at least one substantially hollow tubular holding member 11 adapted to hold at least one structural component A and associated with the fastening means 2 in a removable maimer.

The tubular holding member 11 has a substantially cylindrical conformation with circular cross-section, although alternative embodiments cannot be ruled out wherein the tubular holding member 11 may have a square, rectangular cross section, or another shape.

Particularly, it is possible to make the tubular holding member 11 to the desired length depending on the selected use for the fastening device 1.

With particular reference to the embodiment shown in the figures, wherein the tubular holding member 11 is arranged upright and defines a vertical upright with which the horizontal tubular element A is associated to define a parapet, the tubular holding member 11 advantageously has a length of about 100 to 140 cm. Therefore, the tubular holding member 11 is of such a length as to make a parapet high enough above the floor level of the walkway in order to be able to safely carry out work on the walkway itself. Alternative uses of the fastening device 1 cannot however be ruled out wherein, e.g., the tubular holding member 11 defines a vertical supporting upright for a safety line.

In other circumstances, the fastening device 1 may be associated with the fixed structure B so that the axis of development E is substantially horizontal and wherein, in actual facts, the tubular holding member 11 protrudes horizontally cantilevered from the fixed structure B.

In such a configuration of use, the fastening device 1 can, e.g., be used as an anchor for a scaffolding or be intended for other uses. It is easy to appreciate, in fact, that the application solutions for the fastening device 1 are many and vary according to construction and architectural needs. Conveniently, the tubular holding member 11 is partly insertable for the desired and intended length into the tubular fastening member 6 through the access opening 7 to define a fit-to-size coupling with the tubular fastening member 6.

In other words, the outer diameter of the tubular holding member 11 is slightly smaller than the inner diameter of the tubular fastening member 6.

Conveniently, the tubular holding member 11 comprises one opening 14 made where an end portion of the tubular holding member 11 is located.

The direction of development F is arranged centrally to the opening 14.

When coupling the tubular holding member 11 to the fastening means 2, the longitudinal end portion of the tubular holding member 11 on which the opening 14 is made is inserted within the tubular fastening member 6 through the access opening 7.

In this way, the opening 14 faces the receiving slot 5 and is aligned with the latter along the axis of development E.

The axis of development E and the direction of development F are substantially coincident when the tubular holding member 11 is inserted within the tubular fastening member 6.

Advantageously, the tubular holding member 11 comprises at least one blocking element 15 insertable at least partly into the receiving slot 5 and adapted to promote the blocking of the tubular holding member 11 to the fastening means 2. With special reference to the particular embodiment shown in the figures, the blocking element 15 is associated with the end portion of the tubular holding member 11 on which the opening 14 is made and protrudes from that end portion outwards.

Preferably, the tubular holding member 11 comprises two blocking elements 15 diametrically opposite with respect to the center of the opening 14.

Still according to the invention, the fastening device 1 comprises at least one connecting bar 16 adapted to temporarily connect the tubular holding member 11 to the fastening means 2, to mutually block them and to make a “bayonet” coupling.

The connecting bar 16 is coupleable to the receiving element 4.

When it is necessary to couple the tubular holding member 11 to the fastening means 2, the connecting bar 16 is inserted within the tubular fastening member 6, through the access opening 7, so that it is arranged parallel to the axis of development E.

Conveniently, the connecting bar 16 comprises at least one ending coupling portion 17 insertable into/extractable from the receiving slot 5 through the access opening 7 as a result of the movement of the connecting bar 16 along the axis of development E.

The connecting bar 16 is blockable with respect to the receiving element 4 as a result of the rotation of the connecting bar 16 around the axis of development E. With particular reference to the embodiment shown in the figures, the connecting bar 16 comprises a main portion 18, having nearly constant width, a narrowing portion 19, having nearly constant width but less than the width of the main portion 18, and the ending coupling portion 17, having nearly constant width and substantially coinciding with the width of the main portion 18.

The narrowing portion 19 is placed between the main portion 18 and the ending coupling portion 17 and defines, together with the latter, a recess 20.

With particular reference to the embodiment shown in the figures, the connecting bar 16 comprises two recesses 20 arranged symmetrically with respect to the longitudinal axis of the connecting bar 16.

As can be seen in Figure 4, the connecting bar 16 is inserted within the receiving slot 5 so that the ending coupling portion 17 passes through the receiving slot 5. Next, as can be seen in Figure 5, the connecting bar 16 is rotated around the axis of development E according to a first way so that the edges of the receiving slot 5 are at least partly in the recesses 20.

In this way, the movement of the connecting bar 16 along the axis of development E in the pull-out way with respect to the receiving element 4 is prevented because the ending coupling portion 17 is blocked by the receiving element 4.

When you want to pull the connecting bar 16 out of the tubular fastening member 6, it is necessary to rotate the connecting bar 16 around the axis of development E in a second way, opposite the first way, so that the edges of the receiving element 4 completely come out of the recesses 20 and the ending coupling portion 17 can be pulled out of the receiving slot 5.

Conveniently, the fastening base 3 is adapted to define, together with the receiving element 4, at least one housing seat 21 adapted to accommodate, at least partly, the ending coupling portion 17 when inserted into the receiving slot 5. The housing seat 21 defines a substantially empty volume in which the ending coupling portion 17 can be moved during the coupling and uncoupling operations of the connecting bar 16 to the receiving element 4.

The connecting bar 16 enters the housing seat 21 through the hole 8.

The tubular holding member 11 is arranged around the connecting bar 16.

As can be seen in Figure 6, the blocking elements 15 protrude from the receiving slot 5.

The fastening device 1 according to the invention comprises anti-slip means 22 adapted to mutually block the tubular holding member 11 and the connecting bar 16 in a releasable maimer.

In actual facts, by blocking the tubular holding member 11 to the connecting bar 16, which in turn is blocked to the receiving element 4, the tubular holding member 11 is prevented from accidentally slipping out of the tubular fastening member 6.

Preferably, the anti-slip means 22 comprise: at least one first blocking slot 23 cut on the tubular holding member 11 and at least one second blocking slot 24 cut on the connecting bar 16; at least one blocking member 25 insertable into the blocking slots 23, 24 when the connecting bar 16 is blocked to the receiving element 4 and the tubular holding member 11 is inserted, at least partly, into the access opening 7; at least one stop element 26a, 26b associated with the blocking member 25 and adapted to prevent the release of the latter from the blocking slots 23, 24. As shown in the particular embodiment shown in the figures, the tubular holding member 11 comprises one pair of first blocking slots 23 which are substantially aligned along a direction substantially orthogonal to the direction of development F.

When the tubular holding member 11 and the connecting bar 16 are associated with the fastening means 2, the second blocking slot 24 is substantially aligned with the first blocking slots 23.

The blocking member 25 has a substantially flat and elongated conformation.

The blocking member 25 is consequently inserted within one of the first blocking slots 23, within the second blocking slot 24 and finally within the other of the first blocking slots 23 so as to protrude at the ends from the tubular holding member 11.

Conveniently, each end of the blocking member 25 is provided with a relevant blocking hole 27 coupleable with the stop element 26a, 26b.

Preferably, the stop element 26a, 26b comprises at least one pin 26a, which can be inserted within one of the blocking holes 27, and an attachment element 26b, which can be inserted within the other of the blocking holes 27 and associable with the ends of the pin 26a.

The operation of the fastening device 1 according to the invention is as follows. If it is necessary to associate the structural component A with the fixed structure B, the opening/closing element 10 is placed in the opening position, making the access opening 7 accessible from the outside.

Next, the connecting bar 16 is inserted within the tubular fastening member 6 and the ending coupling portion 17 is inserted within the receiving slot 5, moving the connecting bar 16 along the axis of development E.

Next, the connecting bar 16 is made to rotate around the axis of development E according to the first way, by blocking the connecting bar 16 to the receiving element 4.

At this point, the tubular holding member 11 is inserted within the tubular fastening member 6 and the tubular holding member 11 is blocked to the connecting bar 16 through the anti-slip means 22.

Finally, the structural component A is associated with the tubular holding member 11.

If it is no longer useful to keep the structural component A associated with the fixed structure B, the sequence is reversed by first uncoupling the structural component A from the tubular holding member 11 and by removing the anti-slip means 22, so as to release the tubular holding member 11 and the connecting bar 16.

At this point, the tubular holding member 11 is pulled out of the tubular fastening member 6 and the connecting bar 16 is made to rotate around the axis of development E according to the second way, by releasing the connecting bar 16 with respect to the receiving element 4.

Next, the connecting bar 16 is pulled out of the tubular fastening member 6 and the opening/closing element 10 is placed in the closing position, thus preventing any foreign objects from accidentally falling into the tubular fastening member 6 through the access opening 7.

Figure 7 shows a second embodiment of the fastening device 1, wherein components identical to the first embodiment have the same reference numbers as the first embodiment to the detailed description of which reference is made in full.

The second embodiment differs from the first embodiment mainly in that the tubular fastening member 6 and the fastening base 3 are made, at least partly, of metal material.

Figure 8 shows a third embodiment of the fastening device 1, wherein components identical to the first embodiment and to the second embodiment have the same reference numbers as the first embodiment and as the second embodiment to the detailed description of which reference is made in full.

The third embodiment differs from the first embodiment and from the second embodiment mainly in that the fastening base 3 is fastened to an external surface of the fixed structure B.

The tubular fastening member 6, the receiving element 4 and the fastening base 3 are arranged externally to the fixed structure B.

Preferably, the fastening base 3 is associated with the fixed structure B through appropriate fixing screws.

Conveniently, the tubular fastening member 6 comprises at least one reinforcing element 28 adapted to give structural bearing to the tubular fastening member 6. Precisely, the tubular fastening member 6 comprises a plurality of reinforcing elements 28 associated with the external surface of the tubular fastening member 6, allocated in the proximity of the outlet opening 9 and arranged around the latter with a radial pattern.

Preferably, the reinforcing elements 28 are of the type of plates associated with the tubular fastening member 6.

It has in practice been ascertained that the described invention achieves the intended objects.

First of all, the fastening device according to the invention allows a structural component to be conveniently and easily associated with a fixed structure of a building.

In fact, the assembly of the fastening means and the subsequent coupling to the tubular holding member, to the connecting bar and to the anti-slip means turn out to be quick and easy to perform.

In particular, once the fastening means have been associated with the fixed structure, the subsequent coupling to the other components turns out to be very agile to perform.

Still, the fastening device according to the invention does not need to be relocated several times in place because the fastening means do not get in the way with the works to be done on the fixed structure.

In fact, the fastening device made according to the first embodiment and to the second embodiment comprises fastening means which are completely encompassed in the fixed structure and can be used to hold the structural component only when needed.

The fastening device made according to the third embodiment comprises fastening means which can be easily associated with and disassociated from the fixed structure, as needed, and can also be used in already constructed reinforced concrete fixed structures or in fixed structures other than reinforced concrete structures.

Claims

1) Fastening device (1) of a structural component to a fixed structure of a building, characterized by the fact that it comprises: fastening means (2) associated with a fixed structure (B) of a building, adapted to fasten said fastening device (1) to said fixed structure (B) and comprising: at least one fastening base (3) associated with said fixed structure (B); at least one receiving element (4) associated with said fastening base (3) and comprising at least one receiving slot (5); at least one substantially hollow tubular fastening member (6) associated with said receiving element (4) on opposite side from said fastening base (3) and defining at least one access opening (7) accessible from the outside, said access opening (7) and said receiving slot (5) being substantially aligned along the axis of development (E) of said tubular fastening member (6); at least one substantially hollow tubular holding member (11), adapted to hold at least one structural component (A) and associated with said fastening means (2) in a removable maimer; at least one connecting bar (16) adapted to temporarily connect said tubular holding member (11) to said fastening means (2), to mutually block them and to make a “bayonet” coupling, said connecting bar (16) being coupleable to said receiving element (4); anti-slip means (22) adapted to mutually block said tubular holding member (11) and said connecting bar (16) in a releasable manner.

2) Fastening device (1) according to claim 1, characterized by the fact that said tubular fastening member (6), said receiving element (4) and said fastening base (3) are encompassed within said fixed structure (B).

3) Fastening device (1) according to one or more of the preceding claims, characterized by the fact that said tubular fastening member (6) and said fastening base (3) are made, at least partly, of plastic material.

4) Fastening device (1) according to one or more of claims 1 to 2, characterized by the fact that said tubular fastening member (6) and said fastening base (3) are made, at least partly, of metal material.

5) Fastening device (1) according to one or more of the preceding claims, characterized by the fact that said fastening base (3) is fastened to an external surface of said fixed structure (B), said tubular fastening member (6), said receiving element (4) and said fastening base (3) being arranged externally to said fixed structure (B).

6) Fastening device (1) according to one or more of the preceding claims, characterized by the fact that said connecting bar (16) comprises at least one ending coupling portion (17) insertable into/extractable from said receiving slot (5) through said access opening (7) as a result of the movement of said connecting bar (16) along said axis of development (E), said connecting bar (16) being blockable with respect to said receiving element (4) as a result of the rotation of said connecting bar (16) around said axis of development (E).

7) Fastening device (1) according to one or more of the preceding claims, characterized by the fact that said fastening base (3) is adapted to define, together with said receiving element (4), at least one housing seat (21) adapted to accommodate, at least partly, said ending coupling portion (17) when inserted into said receiving slot (5).

8) Fastening device (1) according to one or more of the preceding claims, characterized by the fact that said tubular holding member ( 11) is partly insertable into said tubular fastening member (6) through said access opening (7) to define a fit-to-size coupling with said tubular fastening member (6).

9) Fastening device (1) according to one or more of the preceding claims, characterized by the fact that said tubular holding member (11) comprises at least one blocking element (15) insertable at least partly into said receiving slot (5) and adapted to facilitate the blocking of said tubular holding member (11) to said fastening means (2).

10) Fastening device (1) according to one or more of the preceding claims, characterized by the fact that said anti-slip means (22) comprise: at least one first blocking slot (23) cut on said tubular holding member (11) and at least one second blocking slot (24) cut on said connecting bar (16); at least one blocking member (25) insertable into said blocking slots (23, 24) when said connecting bar (16) is blocked to said receiving element (4) and said holding member (11) is inserted, at least partly, into said access opening (7); at least one stop element (26a, 26b) associated with said blocking member (25) and adapted to prevent the release of the latter from said blocking slots (23, 24).