WO2012076970A1

WO2012076970A1 - Device for covering a roof with a solar collector

Info

Publication number: WO2012076970A1
Application number: PCT/IB2011/002975
Authority: WO
Inventors: Francis Miniscloux
Original assignee: Tube Profil Equipement-Ets Jean Miniscloux
Priority date: 2010-12-08
Filing date: 2011-12-08
Publication date: 2012-06-14
Also published as: FR2968692A1

Abstract

The invention relates to a device for covering a roof with a solar collector in which a ribbed sheet (4) has a series of longitudinal ribs projecting from the sheet. Solar collector panels (2) extend over this ribbed sheet. Some of these ribs on their top surface have an attached male element (24), formed as an integral part of the sheet, which projects from the corresponding rib. This then forms an interlocking attachment surface for a fixing clip (6) designed to hold the solar collector panels in position relative to the sheet.

Description

SOLAR SENSOR ROOF COVERING DEVICE

The invention relates to roof covering devices by solar collectors.

There are known solar panels for roofing in the building which are formed of a photovoltaic plate and a frame adapted to both support the sensor plate and secondly ensure the fixing of the panel on the structure roof. The presence of this frame has the disadvantage of making the whole particularly heavy.

The present invention proposes to avoid this kind of frame in a solar collector roof covering device in which a roof element is made in the form of a ribbed sheet, which has a series of longitudinal ribs projecting from a plane. basic sheet. According to the invention, some of these ribs have on their upper face a male element hooked integrally with the sheet metal and which protrudes from the corresponding rib, forming a surface hooked by interlocking for a staple of fastener adapted to hold solar collector plates in position relative to the sheet.

The fact that the sheet has an interlocking surface and that the fastening clip has a shape adapted to fit around this hooking element offers an alternative to the previous intermediate frame solutions, particularly interesting in particular in that it is not necessary to screw the staples into the sheet. Subsequently, the solar collectors, intended to extend above the ribbed sheet, which is particularly effective, are ensured, which is also easily adaptable to variations in the number and size of the solar collector plates. , and with a system that does not deteriorate the sheet.

According to features of the invention which allow in particular the overlap of several ribbed sheets and therefore the covering a large roof surface, it is provided at a longitudinal end of each rib that the upper face of this rib forms a substantially flat receiving surface for the longitudinal overlap of the sheets. For this purpose, the reception surface substantially flat

5 can be obtained by crushing the male element hooked on the upper face of the rib. In order to allow the transversal overlap of the sheets this time, it is possible to provide that the ribbed sheet has at one lateral end a longitudinal rib without a male element that hangs from its upper face over its entire length. Thus, there are provided on the sheet substantially flat surfaces, without projecting element, so that these flat surfaces are covered by the sheet of another device The arrangement of the adjacent plates is then such that, above these planar surfaces, the overlapping sheet has a protruding element which provides continuity in

1-5 the presence of male member hooked projecting plates so that the fastening clips can be disposed on substantially the entire roof surface covered by the sheet.

According to a feature of the invention, a seal is provided at at least one of the longitudinal ends of the hooked male element 0, said seal having a shape similar to that of the male hook element. to be able to be fitted inside said male element, between the upper face of the rib and said male element. Thus, it is ensured that there is no water that penetrates under the sheet. According to a feature of the invention, each rib carrying a male hook member has rising walls protruding projecting the base plane of the sheet and an upper wall which extends horizontally between these rising walls while the element hooked male has a mushroom shape with a flattened hat and 0 a central foot, smaller than the hat. The central foot extends the upper horizontal wall so as to connect the cap to this horizontal upper wall so that outer grooves form clearance on either side of the central foot between the cap and the horizontal upper wall. Thus, there is provided an arrangement in which a portion of the horizontal top wall is retained to support the element. hooked male. This clearly distinguishes the upper wall of the rib and the upper wall of the hooked element, and this has the advantage of stiffening the device by the presence of this horizontal bearing, perpendicular to the pulling forces of the solar collectors relative to to the roof element. This also allows a crushing of the male element hooked to the longitudinal ends of the rib as previously mentioned, without sagging of the rib.

Such a design also allows optimized stacking of the ribbed sheets when they are stored before installation on the roofs, the inner face of the upper wall of the rib can rest against the outer face of the flattened cap, the stack being made stable by the contact of these two horizontal walls against each other.

The invention has other features which relate to fastening staples which have already been discussed. In particular, this fastening clip solar collector plates comprises a head adapted to cooperate with said plates and a base hooked to the sheet, said base having a female element complementary shape of that of the male element hooked integral with the sheet. This complementarity of the shapes will allow the interlocking of the staple around a projecting element of the rib and will thus ensure the fixing without deterioration of the sheet.

Advantageously, the fastening clip carries deformation means of the hooked base, to constrain this female portion around the hooked male element integral with the sheet. The fastening clip is thus properly anchored around the projecting elements of the sheet and provides a high reliability of attachment.

According to a feature of the invention, the base of the fastening clip comprises two parallel walls which extend between the head and a core which extends transversely to the walls, said walls being extended beyond the junction between the core and each wall by brackets. The hooked male element having a mushroom-shaped section, forming external grooves on either side of the foot of the mushroom, it is found that when the fastening clip is attached to the rib, the fastening tabs stay in the outer grooves of the male element and the transverse core extend above the male element. The transverse core is further split along the entire length of the staple so that the transverse web is formed of two facing parts which are adapted to approach one another, simultaneously with the approaching of the legs of the staple. fixing, under the action of a clamping screw tending to bring the two walls towards one another. It is thus possible to arrange the fixing lugs around the hooked male element without constraining them and making them easily secure thereafter by a simple screwing action which tightens the walls towards each other and by extension the legs of fastening towards each other by enclosing the foot of the male element hooked.

The invention also relates to a roof covering assembly in which at least one roofing device as previously described is disposed on a roof structure, with solar collector plates extending above the ribbed sheet. These plates are held in position relative to each other, at a distance from the ribbed plate of the device, by the fastening clips nested on said sheet. Thus, plates are maintained above the sheet at a determined distance, without a bulky element between the plates and the sheet, so that good air circulation can be easily obtained in this area to facilitate cooling. plates, necessary for their optimized use.

Other characteristics and advantages of the invention will emerge more precisely from the description which follows, a description illustrated by the following figures:

Figure 1, which is an overview of a roof covered by solar collector plates and which includes a cover device according to the invention;

Figure 2, which is an enlarged view of a detail of the figurel;

Figure 3, which is a sectional view of one of the ribs of the corrugated sheet of the device of the invention, the rib having a projecting hook element;

Figure 4, which is a sectional view of the corrugated sheet having the rib illustrated in Figure 3; Figure 5, which is a perspective view of a rib of the sheet and an associated fastening clip, as well as a sensor plate held in position by this clip;

- Figure 6, which is a perspective view of a longitudinal overlap of sheets according to the invention;

Figure 7, which is an enlargement of Figure 6, with a seal ready to be fitted into one of the sheets;

and Figure 8, which is a perspective view of a rib of the sheet and an associated fastening clip according to a second embodiment.

As illustrated in the figures, a plurality of solar collector plates 2 are disposed above a ribbed plate 4, these plates being held in position by means of fastening clips 6 attached to the ribbed sheet. The solar collector plates are flat photovoltaic modules, whose upper face is oriented opposite the roof structure, to receive the sun's rays. The photovoltaic modules are arranged side by side and they are held in position by fixing clips reported on the ribbed plate and whose head is placed between two adjacent plates to clamp these plates.

Depending on the energy requirements of the user, a variable number of plates may be placed on a roof structure to form a larger cover assembly (Figures 1 and 2). It is observed that according to the device of the invention, each solar collector plate is disposed above the roof structure without the intermediate presence of a frame as can be the case in conventional solar panels, where the plate of solar collector is reported on a frame, itself fixed and screwed on the roof structure. We will now describe more precisely the plate fastening system and the associated ribbed sheet, as shown in Figures 3 to 5. It will be understood that the covering device according to the invention comprises the elements necessary for transforming the solar radiation received on the solar collector plate into electrical energy, by connecting the one or more sensors to an electric circuit. For this purpose, a wiring box, not shown in the figures, is disposed under the plate, secured to the underside of the plate. It incorporates all the elements necessary for the connection by electric cables, not shown and which extend between the plates and the ribbed sheet, this connection being made either to the general electric circuit or to a corresponding housing of a contiguous solar panel.

The ribbed plate 4, in particular visible in FIG. 4, comprises a series of protruding longitudinal ribs, which are separated by flat areas 10 and which extend between two longitudinal ends of the sheet. The series of longitudinal ribs is formed of two overlapping ribs 12 and 14, which are respectively arranged at the lateral ends 16 of the sheet, and stiffening ribs 18 which are regularly distributed between the two overlapping ribs.

The sheet is here aluminum, which allows an optimized weight of all by ensuring rapid cooling of the sheet and therefore the solar collector plates located above it.

Each stiffening rib (Figure 3) has rising walls 20, which protrude the flat beaches 10 which laterally delimit each rib, and an upper wall 22 which extends horizontally between the ends of the walls separate from the flat beaches. The upper wall is extended away from the flat areas by a hooked male element 24. This male element is thus disposed protruding from the ribbed plate to provide a point of attachment for the fastening clips of the solar collector plates. . The male element is made of material with the ribbed plate and the horizontal upper wall of the rib. In the illustrated embodiments, the male hook member has, in section in a plane vertical and transverse to the associated rib, a mushroom shape with a flattened cap 26 of substantially the same width as the width of the upper wall of the rib and with a central foot 28 which connects the hat to the rib. The foot is thin, of smaller width than the cap, so that two outer grooves 30 are formed laterally on either side of the foot. The upper wall of the rib and the upper wall of the hanging element are distinguished. The upper wall of the rib is partially retained and extends horizontally without being shrunken by the presence of the hooked element. We. thus has a better holding of the sheet with this arrangement having a horizontal bearing formed by the upper wall of the rib. In the case where the sensor plates, adapted to be attached to the ribs via the fastening clips, tend to tear under the effect of wind for example, it is interesting that one has a bearing perpendicular to the tearing force.

In addition, a good stack of the ribbed sheets is allowed when they are stored after manufacture, the inner face of the upper wall of the rib being able to rest against the outer face of the flattened cap, to ensure stable stacking due to the cooperation of the walls. horizontal.

The hooked male element has this mushroom shape substantially over the entire length of the rib, it being understood that at one of its longitudinal ends, the male element is crushed so that the upper face of the cap substantially reaches the level of the rib. of the upper wall of the rib. The fact that the upper wall of the cap and the upper wall of the rib form two distinct walls allows crushing of the male element hooked to the longitudinal ends of the rib without the upper wall of the rib collapses. . Although the initial orientation of the sheet in one direction or in the other may be considered since the ribs extend longitudinally from top to bottom, it is preferably the distal longitudinal end of the sheet 32, c that is to say the end of the highest sheet on the roof, which will present this crushed and substantially flat area 34. As will be described below, particularly with respect to Figure 7, it allows to control at best the intrusion of water under one of the sheets.

The two overlapping ribs have substantially different shapes. At a lateral end of the sheet, a cover rib 12 is formed by a first rising wall 36 which protrudes from a flat surface and a flat intermediate overlapping wall 38 which extends horizontally in the continuity at the top of this first rising wall. The free end of the flat covering wall 40 is folded down. At the opposite lateral end, the cover rib 14 has a shape similar to that of the stiffening ribs with a hooked male member projecting protruding.

For the same sheet 4, a first covering rib 12 is distinguished with a flat top wall and a second covering rib 14 with a male element hooked projecting from its upper surface, these two ribs being respectively located on a flat surface. first and on a second lateral end of the sheet. As will be described in more detail below, it is observed that thus a second rib for covering a sheet has a shape adapted to cover a first cover rib of another sheet, in particular by the equivalent inclination of the sheets. rising walls and especially by the absence of male element hooked projecting from the upper wall on the first cover rib.

It may be provided to have a seal, not shown in the figures, on the flat wall covering the first cover rib, on which will support the second cover rib, to seal the cover and to prevent the passage of under one of the sheets.

The fastening clip 6, in particular visible in FIG. 5, comprises a head 42 adapted to cooperate with the solar collector plates, and a base hooked on the sheet 44. This base has at its opposite end to the head a shape complementary to the shape of the male element hooked integral with the sheet, so that the clip can on the one hand be fixed to the sheet by complementarity of shape around the projecting element, and on the other hand firmly hold the solar collector plates relative to each other and relative to the sheet.

The head of the staple comprises a transverse support wall 46 which extends perpendicularly to the opposite of the base of the staple by two uprights 48 adapted to each carry a transverse plate 50. These plates extend parallel to each other at a distance from the transverse wall. Each tray extends the amount toward the outside of the clip for forming a large bearing surface and it also extends the amount towards the inside of the clip, partially covering the transverse wall, A space is arranged between the two plates to form a passage towards the slide delimited longitudinally by the transverse wall, the uprights and the underside of the trays. On these plates rests transversely a wedge 52 in the shape of a U with fins 54 which extend towards the outside of the wedge the top of the branches of the U to form on either side of the wedge a housing adapted to receive and to pinch a sensor plate 2. The same staple head thus serves to maintain two adjacent plates in position. The wedge carries a slider 56 which protrudes below the base of the U and which has a shape adapted to be housed in the slide of the staple head. The shim can slide longitudinally relative to the transverse plates so that the user can adjust its position to maintain the position of two contiguous plates.

The base 44 has two parallel walls 58 which extend vertically between the transverse support wall of the staple head and a transverse web 60. At the junction between the transverse web and each vertical wall, a fastening lug 62 extends away from the walls to allow interlocking of the staple around the hook member. In the embodiment of Figure 5, it can be seen that the spacing of the vertical walls is smaller than the width of the upper face of the hooked male element. The fastening lugs then have an inverted C or C-shaped curved shape which, from the junction of the core and the wall, extends substantially horizontally in order to cover the curved shape of the cap of the hooked male element. and house the end of the fastening tab under the cap, in the outer grooves of the hooked male element. The outer grooves are arranged between the horizontal upper wall of the rib and the head of the mushroom, and the fact that the hooked male element extends the rib at the horizontal bearing formed by the upper wall of the rib by a thin foot in the center of this bearing allows to have outer grooves deep enough to ensure a good grip of the fastening clip in the grooves. This grip, and the fact that the angle between the upper wall of the rib and the bottom wall of the cap is very closed, provides a good holding of the fastening clip. The fastening clip carries deformation means of the hooked base, to constrain this female portion around the male hooked element integral with the sheet so that the fastening clip is properly anchored to the sheet metal. . For this purpose, at least one clamping screw 64 passing through the two walls is provided with a nut attached to one of these walls, as well as an axial groove in the center of the transverse core, along the entire length of the clip. The transverse core is thus formed of two twin parts facing each other which are adapted to move towards one another under the action of tightening the screw and bringing the two walls closer together. one to the other. This approximation of the walls is done simultaneously with a rapprochement of the brackets to one another.

The height of the fastening clips is determined according to the height of the ribs of the sheet to provide a given spacing between the plate and the sheet to promote the cooling of the plates by an air passage between the sheet and the sensor plates . The length of the staples may vary as long as each staple is long enough to ensure a stable reach on the associated rib and thus allow a sufficient grip for a good grip. It is observed that, advantageously, the fastening clips used for holding the plates in position relative to the sheet do not run along the entire length of the ribs, which has the advantage of cooling the plate and allowing the simplified passage of electrical cables. between the plates and the sheet, on both sides of these staples. The assembly of the covering device according to a first embodiment of the invention will now be described, illustrated by FIGS. 1 to 7.

At least one fastening clip is provided for each rib of the sheet. Advantageously, and as can be seen in FIG. 2, the staples are regularly distributed along the same rib. In the following description, we first place all the staples on the same sheet, then place the staples associated with the immediately adjacent rib keeping a parallelism in the layout to obtain a perfect grid. But it will be understood that it is possible on the one hand that the shape of the solar collector plates may require that this grid be irregular, the invention thus allowing to move the staples along the rib without deterioration of the sheet since there has been no screwing, and it is possible on the other hand to place first the staples parallel to a rib on the another, and then place the row next to one rib on the other. Each staple is placed on its rib by inserting the fastening tabs of the base of the staple into the outer grooves of the hooked male member. The groove in the transverse core allows to separate the brackets to be able to fit the female part around the male element without irreparably deforming these tabs. It will be understood that the staples may also be threaded at the end of the protruding rib and male member and then slidably moved along the male member.

The clip is in place when the fastening tabs are housed in the outer grooves of the male member and when the transverse web extends above the upper face of the male member.

When the clip is in place, the clip walls are tightened by screwing, which has the effect of clamping the female part around the hooked male element. At this time, the screwing is light to allow adjustment in position when clipping the solar collector plates in the staples.

This makes it possible to mount the staples on the ribs on the site of manufacture of the ribbed sheet, and to bring directly on the structure of the roof to cover a set ready to pose including the sheet and the staples. The sensor plates are then mounted in place, one by one by clipping them into the heads of the fastening clips. It will be understood that the ease of mounting staples on the sheet also allows on-site mounting of the staples, at the same time as the mounting of the plates.

Before clipping the plate between the staples, the position of the electrical cables exiting the housing is adjusted so that these cables pass through the fastening clips. The positioning frequency of the devices provides the user with easy cable routing. The presence of fastening clips has the advantage of allowing the free flow of air between the plates and the sheet by removing the plate from this sheet, while disengaging itself from the presence of a frame and by favoring a fastening system which does not deteriorate the sheet. As has been described above, it is possible to realize a roof covering assembly with several adjacent roofing devices, as can be seen in particular in FIGS. 1 and 2. It is thus particularly easy to arrange two roofing devices. according to the invention side by side sidewise, as well as having two cover devices one above the other, in the axis of the ribs, as is partially shown in Figures 6 and 7 for one of ribs of each sheet. The following description is the same depending on whether the sensor plate or the staples are already in place or not on the sheet. Firstly, the ribbed sheet of a first covering device is fixed on the roof structure.

When it is desired to have a second cover device laterally at the side of the first device, the ribbed sheet of the second covering device is brought opposite the roof structure, close to the first device, with the aim of overlapping the two contiguous devices. The second covering rib of the second device is held above the first cover rib of the first device, before being lowered. As has been mentioned above, the first covering rib does not have a male element hooked projecting from its upper wall. The second covering rib of the second device can therefore be superimposed on the first covering rib of the first device, and the user only has to fix these two overlapping ribs one on the other. A hollow head screw and a nut not shown attached to the first cover rib are for example used. The second overlapping rib which comes above carries a hooked male element which allows continuity from one sheet to another in the transverse distribution frequency of the male elements hanging on the entire roof.

When it is desired to have a third covering device axially above the first covering device, the corrugated sheet of the third covering device is brought to the roof structure, near the first device for the purpose of overlapping the two adjacent devices. The proximal end 33 of the third covering device is superimposed on the distal end 32 of the first device, it being recalled that at the distal end of the plates, the upper wall does not have a projecting male element and thus forms a substantially flat reception surface for the sheet coming to cover it. It is visible in Figures 6 and 7 that the projecting element has been crushed to allow the sheet of the third device to be slid on the upper wall, to the sheet of the first device. It will be understood that this solution of producing the protruding shape along the entire length of the rib and then crushing it over at least the desired distance of overlap by a neighboring sheet is advantageous in manufacture since it involves simple operations for the first time. bring the hooked element over the entire length and then crush it partially, but it will be understood that other modes of manufacture could be envisaged to give an upper wall of flat rib without crushing material. In all cases, all the ribs of the third device can therefore be superimposed on all the ribs of the first device, over the desired length of coverage (if it is not expected to offset the positioning of the plates of one row to another), and the user only has to fix the ribbed sheets of the two devices one on the other. As seen in the figures, the overlapping sheet has ribs, more precisely the stiffening ribs and the second covering rib, at the top of which the hooked male member extends to the end. proximal of the sheet, which comes opposite the male elements of hanging sheet covered. The flat surface between two male elements hooked successively longitudinally is small compared to the length of the ribs and the staples can thus be placed over substantially the entire length of the sheet.

In order to avoid the intrusion of water under the sheet at its proximal end by the opening of the projecting hook member, it is intended to plug this end by a corresponding shaped seal 66. As shown in Figure 8, the seal slides along the upper wall of the rib to be fitted into the hooked male element. It will be understood that in both cases, the user must also connect together the connection cables of the first device to the connecting cables of neighboring devices, to ensure the electrical continuity of one. device to the other, in addition to the mechanical continuity operated by the superposition of the ribs.

We will now describe a second embodiment of the invention, which is illustrated in Figure 8 and differs from the previously described device in that the fastening clip has a hook base 144 substantially different. The vertical walls 158 have a greater spacing than previously, so that the fastening tabs 162 extend these walls straight beyond the transverse web 160. The shape of the fastening tabs from the junction point of the web The core and vertical wall here is closer to an inverted L or L, with always the end of the bracket which is adapted to fit in the outer groove of the male element. hooked.

The distance between the transverse core and the ends of the fixing lugs is greater than in the mode previously described. This provides a set of mounting of the clip on the rib, the transverse core is not intended to be in contact with the upper wall of the rib. There is no risk that the transverse web is constrained during the positioning of the staple around the rib, even if the height of the hooked male element is larger than expected for reasons tolerance to manufacture. Thus, the soul being unsolicited to mount on the sheet, it can play its full role during the tightening of the screw, that is to say, transmit efforts as soon as the two twin parts of the soul split at its center is join and butt end against each other by closing the central slot. The fact of increasing the distance between the fastening lugs and the transverse web of the staple can furthermore modify the place of passage of the tightening screw or screws. These clamping means can thus be reported above the transverse core as previously described or well below this core, between it and the upper wall of the rib, (for ease of reading, only the holes 70 for the passage of one of the clamping screws in this position below the core have been shown) which would have the effect of reinforcing the attachment of the fastening lugs around the hooked male element.

Other variants are provided, although they have not been the subject of detailed figures illustrating them specifically. Some of these variants are specified below, but the list is not exhaustive: the sheet is secured to an insulating foam that extends under the sheet opposite the solar collector plate. The cover device thus incorporates an insulating means, which could in a variant comprise felt, arranged automatically between the sheet and the roof structure during attachment of the sheet; the shape of the hooked male element is different, while allowing according to the invention that the hooked male element can be inserted into the clip and that its outer shape allows the fastening of the fastening tabs of the clip. the staple for holding in position the staple, and therefore the sensor plates, with respect to the sheet.

Be that as it may, the invention can not be limited to the embodiments which have been specifically described in this document, and it extends in particular to all equivalent means and to any technically operating combination of these means.

Claims

REVEDIC AT IONS

Roof-covering device with solar collector characterized in that it comprises a roof element made in the form of a ribbed sheet (4), which has a series of longitudinal ribs projecting from a base plane of the sheet metal, some of said ribs having on their upper wall a hooked male element (24) which is integral with the sheet metal and which protrudes along the corresponding rib, forming a hooked surface for interlocking a fastening clip (6) adapted to hold solar collector plates in position relative to the sheet.

2. Device according to claim 1, characterized in that each rib carrying a male hook member (24) comprises rising walls (20) protruding from said base plane of the sheet and an upper wall (22) which extends horizontally between said rising walls, said hooked male member having a mushroom shape with a flattened cap (26) and a central foot (28), smaller in width than said cap, which extends the horizontal top wall connecting said cap to said upper horizontal wall (22) forming between said cap and said upper horizontal wall external grooves (30) forming a clearance on either side of the central foot.

3. Device according to claim 1 or 2, characterized in that, at a longitudinal end of each rib carrying a male hook member (24), the upper wall of said rib forms a substantially planar receiving surface (34). .

4. Device according to claim 3, characterized in that the substantially planar receiving surface (34) is obtained by crushing the hooked male member (24) on the horizontal upper wall (22) of the rib.

5. Device according to one of the preceding claims, wherein said series of ribs comprises at least two overlapping ribs (12, 14) disposed on the edges of the sheet and stiffening ribs (18) distributed between said overlapping ribs. characterized in that the upper wall of the stiffening ribs is extended opposite the sheet by said hooked male member (24), and in that one of the cover ribs (14) has a similar shape to that of the stiffening ribs (18), with a male member projecting from the upper wall, while the other covering rib (12) has an upper wall formed by a flat covering wall (38), without hanging element protruding.

6. Device according to one of the preceding claims, characterized in that a seal (66) is arranged at at least one longitudinal end of the hooked male element (24), said seal having a similar shape to that of the male element hooked so as to be fitted inside said male element, between the upper wall of the rib and said male element.

7. Device according to one of the preceding claims, wherein the fastening clip (6) comprises a fixing head (42) for the solar collector plates and a hooked base (44) to the sheet, said base hook having a female part of complementary shape to that of the male element (24) integral with the sheet (4), and wherein the fastening clip (6) carries deformation means (60, 64) of the hooked female base (44) for constraining this female part around the hooked male element (24) integral with the sheet (4).

8. Device according to claim 7, characterized in that the hooked male element (24) has along its length a mushroom shape with two outer grooves (30) on either side of the foot (28) of which mushroom which connects the hooked male member (24) to the upper wall of the rib, and in that the fastening clip (6) has two parallel walls (58; 1 58) extending between the head and a transverse web (60; 1 60) to the walls, said walls being extended beyond the junction between the transverse web and each wall by fastening tabs (62, 1 62) so that when the fastening clip is attached to the rib (18), the fastening tabs are housed in the outer grooves of the male member and the transverse web extends above the male member, the transverse web being further split along the entire length of the staple so that this soul is formed of two twin parts in which are adapted to approach each other simultaneously when the fixing lugs are brought together under the action of a clamping screw (64) tending to bring the two walls towards one another .

A roof covering assembly, wherein at least one device according to one of claims 1 to 8 is disposed on a roof structure, characterized in that solar collector plates (2) extend above said ribbed plate (4), said plates being held in position relative to each other, at a distance from the ribbed plate of said device, by the fastening clips (6) nested on said sheet.