DE102021123183A1 - Fastening device for fastening a photovoltaic module forming part of a roof of a building to the building and connecting devices for connecting such photovoltaic modules to one another - Google Patents

Abstract

A fastening device for fastening a photovoltaic module forming part of a roof of a building to the building is described. The fastening device is characterized in that it has a first receiving section for receiving an edge section of the photovoltaic module and a second receiving section for receiving a part of the building, and that the second receiving section is designed to be attached to a gutter of the building. Furthermore, a connecting device for connecting photovoltaic modules meeting at a roof ridge and a connecting device for connecting adjacent photovoltaic modules forming parts of a roof surface are described.

Description

The present invention relates to a fastening device for fastening photovoltaic modules to a building according to the preamble of patent claim 1, and connecting devices for connecting the photovoltaic modules to one another according to the preambles of patent claims 8 and 16.

Photovoltaic modules have been known for many years, essentially plate-shaped structures, through which incident light is converted into electrical energy. The provision of photovoltaic modules on roofs of buildings has also been known and widely used for many years. Countless embodiments of fastening devices for fastening the photovoltaic modules to buildings are also known. In the present case, buildings with sloping roofs are of particular interest, for example with gable roofs. In the case of such roofs, the photovoltaic modules are usually installed by means of what is known as on-roof installation, ie they come to lie above the roof skin, for example above the roof panels. In this case, so-called roof hooks are usually used as fastening devices, which are fastened to the supporting roof structure, for example to the rafters.

1. 1. Da die Dachhaut von Gewächshäusern durch große Glas- oder Kunststoffscheiben gebildet wird, die fest mit der diese tragenden Dachkonstruktion verbunden sind, und da ferner die Dachkonstruktion allein schon deshalb anders ausgebildet ist als etwa ein Dachstuhl eines Wohn- oder Bürogebäudes, können die Photovoltaikmodule nicht durch die bekannten Dachhaken an der die Dachhaut tragenden Dachkonstruktion von Gewächshäusern befestigt werden.
2. 2. Da die Dachkonstruktion von Gewächshäusern üblicherweise auch bei weitem nicht so belastbar wie beispielsweise die Dachstühle von Wohn- oder Bürogebäuden, kann das Vorsehen von Photovoltaikmodulen über dem Glasdach zudem zu statischen Problemen führen.
3. 3. Will man aufgrund der obigen Punkte 1 und 2 die Glas- oder Kunststoffscheiben durch die Photovoltaikmodule ersetzen, führt also eine sogenannte Indachmontage der Photovoltaikmodule durch, dann ergibt sich das Problem, dass die Photovoltaikmodule üblicherweise andere Abmessungen aufweisen als die durch diese ersetzten Glasplatten, sodass es zumindest bei einem Umbau nicht damit getan ist, einfach die Glasplatten gegen Photovoltaikmodule auszutauschen.

Photovoltaic modules have recently been increasingly used on the roofs of greenhouses. This is very lucrative due to the large areas available for this purpose. And since the available photovoltaic modules are more or less translucent, light can still get into the greenhouse through them. However, the following special features must be taken into account with greenhouse roofs.

1. 1. Since the roof skin of greenhouses is formed by large glass or plastic panes that are firmly connected to the roof structure that supports them, and since the roof structure is designed differently than the roof truss of a residential or office building for this reason alone, the photovoltaic modules not be fastened by the known roof hooks to the roof structure of greenhouses that supports the roof membrane.
2. 2. Since the roof construction of greenhouses is usually not nearly as resilient as, for example, the roof trusses of residential or office buildings, the provision of photovoltaic modules over the glass roof can also lead to static problems.
3. 3. If one wants to replace the glass or plastic panes with the photovoltaic modules based on points 1 and 2 above, i.e. if the photovoltaic modules are installed in the roof, then the problem arises that the photovoltaic modules usually have different dimensions than the glass plates they replace, so that, at least in the case of a conversion, it is not enough to simply exchange the glass panels for photovoltaic modules.

After all, the installation of photovoltaic modules on the roofs of greenhouses and comparable buildings can usually not be done as in residential or office buildings.

The present invention is therefore based on the object of finding a way by which photovoltaic modules can also be installed quickly and easily, which is also suitable for greenhouse roofs.

According to the invention, this object is achieved by the fastening device claimed in patent claim 1 and the connecting devices claimed in patent claims 8 and 16 .

Due to their structure, this fastening device and these connection devices are suitable for attaching the photovoltaic modules by means of in-roof installation and for this reason alone are very well suited for use in greenhouses. The fastenings and connections to be produced can also be produced particularly quickly, easily and inexpensively, but are nevertheless very resilient and safe.

Advantageous developments of the invention can be found in the dependent claims, the following description and the figures.

• 1 eine Seitenansicht eines Daches eines Gewächshauses, welches durch wie im Folgenden näher beschrieben am Gebäude angebrachte und miteinander verbundene Photovoltaikmodule gebildet wird,
• 2 eine perspektivische Ansicht eines Teils des in der 1 gezeigten Daches,
• 3 eine Seitenansicht eines anderen Gewächshausdaches, welches durch wie im Folgenden näher beschrieben am Gebäude angebrachte und miteinander verbundene Photovoltaikmodule gebildet wird,
• 4 eine vergrößerte Ansicht des in der 1 mit A bezeichneten Bereiches, nämlich einer Dachrinne mit einem daran befestigten Photovoltaikmodul,
• 5 eine perspektivische Ansicht der in der 4 gezeigten Anordnung,
• 6 eine perspektivische Ansicht eines Haltebügels einer Befestigungsvorrichtung zur Befestigung eines Photovoltaikmoduls an der Dachrinne,
• 7 eine perspektivische Ansicht eines Klemmelements der Befestigungsvorrichtung,
• 8 eine perspektivische Ansicht der bestimmungsgemäß zusammengesetzten Befestigungsvorrichtungs-Komponenten aus den 6 und 7,
• 9 bis 12 Darstellungen zur Veranschaulichung der Arbeitsschritte, die bei der Montage eines Photovoltaikmoduls an der Dachrinne unter Verwendung der in den 6 bis 8 gezeigten Befestigungsvorrichtung durchzuführen sind,
• 13 eine vergrößerte Ansicht des in der 1 mit B bezeichneten Dach-Bereiches, nämlich eine Seitenansicht des Dachfirsts und einer Verbindungsvorrichtung zur Verbindung der am Dachfirst aufeinander treffenden oberen Enden von gegenüberliegende Dachflächen bildenden Photovoltaikmodulen,
• 14 eine perspektivische Ansicht eines Keils der in der 13 gezeigten Verbindungsvorrichtung,
• 15 eine perspektivische Ansicht einer Halterung der in der 13 gezeigten Verbindungsvorrichtung,
• 16 eine perspektivische Ansicht der bestimmungsgemäß zusammengesetzten Verbindungsvorrichtungs-Komponenten aus den 14 und 15,
• 17 bis 19 Darstellungen zur Veranschaulichung der Arbeitsschritte, die bei der Verbindung von zwei Photovoltaikmodulen unter Verwendung der in den 13 bis 16 gezeigten Verbindungsvorrichtung durchzuführen sind,
• 20 eine Explosionsdarstellung der in der 13 in einer Seitenansicht gezeigten Anordnung
• 21 eine Seitenansicht eines ersten Ausführungsbeispiels einer Verbindungsvorrichtung zur Verbindung von zwei nebeneinander angeordneten und Teile einer Dachfläche bildenden Photovoltaikmodulen,
• 22 eine perspektivische Ansicht einer ersten Klammer der in der 21 gezeigten Verbindungsvorrichtung,
• 23 eine perspektivische Ansicht einer zweiten Klammer der in der 21 gezeigten Verbindungsvorrichtung,
• 24 eine Seitenansicht eines zweiten Ausführungsbeispiels einer Verbindungsvorrichtung zur Verbindung von zwei nebeneinander angeordneten und Teile einer Dachfläche bildenden Photovoltaikmodulen,
• 25 eine perspektivische Ansicht einer Klammer der in der 24 gezeigten Verbindungsvorrichtung,
• 26 eine perspektivische Ansicht eines Keils der in der 24 gezeigten Verbindungsvorrichtung, und
• 27 eine perspektivische Ansicht der bestimmungsgemäßen Relativlage der Verbindungsvorrichtungs-Komponenten aus den 25 und 26.

The invention is explained in more detail below using exemplary embodiments with reference to the figures. Show it

• 1 a side view of a roof of a greenhouse, which is formed by photovoltaic modules attached to the building and connected to one another as described in more detail below,
• 2 a perspective view of part of the in the 1 shown roof,
• 3 a side view of another greenhouse roof, which is formed by photovoltaic modules attached to the building and connected to one another as described in more detail below,
• 4 an enlarged view of the in the 1 with A designated area, namely a gutter with a photovoltaic module attached to it,
• 5 a perspective view of in FIG 4 shown arrangement,
• 6 a perspective view of a retaining bracket of a fastening device for fastening a photovoltaic module to the gutter,
• 7 a perspective view of a clamping element of the fastening device,
• 8th a perspective view of the intended assembled fastening device components from the 6 and 7 ,
• 9 until 12 Representations to illustrate the work steps involved in installing a photovoltaic module on the gutter using the in the 6 until 8th fastening device shown are to be carried out,
• 13 an enlarged view of the in the 1 roof area marked B, namely a side view of the roof ridge and a connecting device for connecting the upper ends of photovoltaic modules forming opposite roof surfaces, which meet on the roof ridge,
• 14 a perspective view of a wedge in FIG 13 connection device shown,
• 15 a perspective view of a holder in the 13 connection device shown,
• 16 a perspective view of the intended assembled connection device components from the 14 and 15 ,
• 17 until 19 Representations to illustrate the work steps involved in connecting two photovoltaic modules using the in the 13 until 16 connection device shown are to be carried out,
• 20 an exploded view of the in the 13 arrangement shown in a side view
• 21 a side view of a first exemplary embodiment of a connecting device for connecting two photovoltaic modules arranged next to one another and forming parts of a roof surface,
• 22 a perspective view of a first bracket in the 21 connection device shown,
• 23 a perspective view of a second bracket in the 21 connection device shown,
• 24 a side view of a second exemplary embodiment of a connecting device for connecting two photovoltaic modules arranged next to one another and forming parts of a roof surface,
• 25 a perspective view of a bracket in the 24 connection device shown,
• 26 a perspective view of a wedge in FIG 24 shown connecting device, and
• 27 a perspective view of the intended relative position of the connecting device components from FIGS 25 and 26 .

An advantageous installation of photovoltaic modules, which is particularly suitable for greenhouse roofs, is described below.

In the example considered, the photovoltaic modules are essentially plate-shaped, rectangular structures, but could in principle also have a different shape. It converts incident light into electrical energy.

The greenhouse in the example considered is a greenhouse designed for commercial use in the so-called Venlo construction. However, the photovoltaic module installation presented here can also be used in any other greenhouse that has a pitched roof, for example a pitched roof or a parallel roof.

The application of the photovoltaic module assembly presented here is not even limited to greenhouses. It can also be used in other buildings, especially in those buildings whose roofs have the same or similar problems as greenhouse roofs, ie, for example, are not strong enough and/or have no suitable attachment options for roof hooks or the like.

The 1 shows a side view of a greenhouse roof. Since in the present case only the roof, more precisely its structure and production, is of interest, the rest of the greenhouse is not shown in the figures. However, how greenhouses are constructed is generally known and does not require any further explanation. This also applies to the Venlo-type greenhouses already mentioned above.

The 2 shows a perspective view of part of this roof. Partly because greenhouses, at least commercial greenhouses, usually last much longer than in the 2 are shown, so - based on the representation in the figures - very much further, for example, several hundred meters to the rear.

That in the 1 and 2 The roof 1 shown is a pitched roof, more precisely a gabled roof, with two opposing, oppositely inclined roof surfaces 11, 12, which meet at the top of the roof ridge 13.

The roof surfaces, ie both the first roof surface 11 and the second roof surface 12 are at least partially formed by photovoltaic modules 2 . In the example under consideration, all roof areas are formed entirely by photovoltaic modules 2 .

In the example under consideration, the photovoltaic modules 2 are installed by means of in-roof installation, so that the photovoltaic modules 2 form the roof skin and replace the glass or plastic panes that are usually provided on greenhouse roofs. If the roof were designed appropriately for this purpose, it would in principle also be possible to arrange the photovoltaic modules 2 above the glass or plastic panes by means of on-roof installation, with at least the fastening device for fastening the photovoltaic modules 2 to the greenhouse, which is described in more detail below, basically being used both for in-roof installation and for the roof mounting can be used.

As will be better understood later, the photovoltaic modules 2 are attached and connected to one another by the fastening and connecting devices presented here in such a way that no separate roof construction is required, which serves as a support and/or as a support for the photovoltaic modules 2 forming the roof skin. The lower edge portions of the photovoltaic modules are attached to a non-roof part of the building, and the upper and side edge portions of opposite or adjacent photovoltaic modules are connected to each other such that a self-supporting pitched roof is formed solely by the photovoltaic modules.

A newly erected greenhouse does not have to have a separate roof structure to support any type of roof skin, and in an existing greenhouse to which photovoltaic modules are to be subsequently attached, the glass or plastic panes provided on the roof, including those supporting them, can be used roof structure to be removed. In both cases, the entire roof is formed solely by the photovoltaic modules attached and connected to one another as described.

Along the lower edge of each roof area 11, 12 a gutter 15 is provided. The gutters 15 are not supported by the roof 1, in particular not by the photovoltaic modules 2 forming the roof skin, but are attached to a support structure of the greenhouse, which is usually formed by a metal structure made of steel and/or aluminum. More specifically, the gutters 15 are preferably mounted and supported on suitably strong supports or beams of the metal structure. The gutters 15 are designed to be so stable that they can be used as supports for the photovoltaic modules 2 . To be more precise, they usually even form a supporting part of the metal structure of the greenhouse, i.e. they are beams or purlins that carry the entire roof, regardless of the roof design.

As in particular from the 2 As can be seen, in the example considered, the length of each photovoltaic module 2 is equal to the width of the roof surface on which it is arranged. This means that each photovoltaic module 2 extends from an eaves 14 to the ridge 13 of the roof area it forms. In the example under consideration, this length is 1.75 m, but in principle it could also be arbitrarily much larger or smaller. In addition, several photovoltaic modules 2 are arranged side by side in a row. The one in the 2 The photovoltaic module row shown comprises only two photovoltaic modules 2 arranged next to one another. In principle, any number of photovoltaic modules 2 can be arranged next to one another as shown.

• - sind die der Dachrinne 15 zugewandten unteren Photovoltaikmodul-Randabschnitte über später unter Bezugnahme auf die 4 bis 12 noch genauer beschriebene Befestigungsvorrichtungen 3 an der Dachrinne 15 befestigt,
• - sind die von der Dachrinne 15 abgewandten oberen Randabschnitte der eine der Dachflächen bildenden Photovoltaikmodule über später unter Bezugnahme auf die 13 bis 20 noch genauer beschriebene erste Verbindungsvorrichtungen 4 mit den daran angrenzenden oberen Randabschnitten der die gegenüber liegende Dachfläche bildenden Photovoltaikmodule verbunden, und
• - sind die einander zugewandten seitlichen Randabschnitte von nebeneinander liegenden Photovoltaikmodulen über später unter Bezugnahme auf die 21 bis 27 noch genauer beschriebene zweite Verbindungsvorrichtungen 5 miteinander verbunden.

As will be explained in more detail later,

• - Are the gutter 15 facing lower photovoltaic module edge sections later with reference to FIG 4 until 12 Fastening devices 3 described in more detail attached to the gutter 15,
• - The upper edge portions of the photovoltaic modules forming one of the roof surfaces facing away from the gutter 15 are described later with reference to FIG 13 until 20 described in more detail first connecting devices 4 with the adjacent upper edge portions of the opposite lie ing roof area forming photovoltaic modules connected, and
• - are the mutually facing lateral edge portions of adjacent photovoltaic modules above later with reference to FIG 21 until 27 second connecting devices 5 described in more detail connected to each other.

The photovoltaic modules 2 used here have a peripheral frame, ie they are framed photovoltaic modules. The structure of such a photovoltaic module 2 is, for example, from 17 seen where in the 17 In addition to the photovoltaic module 2, a holder 42 attached thereto is also shown, which, however, does not belong to the photovoltaic module 2. The Indian 17 The photovoltaic module section shown comprises a solar module 21, which is composed of a plurality of solar cells and a glass plate covering them, and said frame 22. The frame 22 runs around the solar module 21 laterally and fixes it in the upper area of the frame. The lower area of the frame is intended for cables, connection terminals and other system components, among other things, but is only partially occupied by this, so that at least parts of the fastening and connecting devices 3, 4, 5 that are mentioned and described in more detail later can also be located there. The fastening and connecting devices 3, 4, 5 are each connected to the frames 22, so that the fastenings or connections effected by the fastening and connecting devices are fastenings or connections via the frames 22. The fastening and connecting devices 3 , 4 , 5 described in more detail below are at least partially adapted to the structure and the dimensions of the frame 22 .

In the example considered, the frame 22 is constructed as follows: The outside 221 of the frame 22 laterally closing outwards is formed by vertical surfaces. A substantially horizontal upper side covering the outer edge section of the solar module 21 from above extends inwards from its upper end, and a horizontal underside 223 extends inwards from its lower end, with both the upper side 222 and the underside 223 only Edge area of the frame 22 are provided, more precisely only a short distance, for example a few millimeters or a few centimeters, protrude into the inner area surrounded by the outside 221 of the frame.

In the example under consideration, the frame 22 consists of aluminum profiles, but it could also consist of another material. In the present case, the frame height is 30-50 mm, but it could in principle also be larger or smaller.

As already mentioned above, the special features of the present invention can not only be used for gable roofs according to the 1 and 2 are used, but also for other pitched roofs with sloping roof surfaces. In particular, the special features can also be used with parallel roofs, which are also very common in greenhouses. A side view of such a parallel roof is shown in 3 shown. A parallel roof consists of two or more saddle roofs arranged next to each other according to 1 and 2 . That in the 3 The parallel roof shown consists of two gable roofs arranged side by side, but could also include a larger number of gable roofs 1 . Along the lower edge of each roof surface 11, 12 gutters 15 are provided again. In this case, in the example under consideration, only a single common gutter 15 is provided between adjacent roof areas, more precisely between adjacent gable roofs. The gutters 15 of the parallel roof are like the gutters 15 of the saddle roof already described above according to the 1 and 2 trained and installed.

Both the gable roof according to the 1 and 2 as well as with the parallel roof 3 In the example under consideration, the distance between two gutters 15 (center point to center point) is 3.20 m. In principle, this distance could also be larger or smaller.

It will now be referred to the 4 until 12 described how the already mentioned fastening device 3 for fastening a photovoltaic module 2 to the gutter 15 is constructed and used.

The 3 and 4 12 shows various views of the state in which a photovoltaic module 2, more specifically a lower edge portion thereof, is fixed to one of the gutters 15 using the fixing device 3 so that it is supported by the gutter 15.

The fastening device 3 consists of two separate items, namely one in the 6 shown headband 31 and in the 7 clamp piece 32 shown. These two fastening device components are as in FIG 8th illustrated interconnectable. The retaining bracket 31 can also be pushed onto the gutter 15 and is designed to carry the photovoltaic module 2 .

The retaining clip 31 and the clamping piece 32 are made of metal in the example under consideration, but could also be made of a different material, for example plastic. To be more precise, the aluminum profiles in question are a few cm long. The bracket 31 could also be formed by a correspondingly curved plate.

The bracket 31 has a substantially S-shaped cross section. It has a first receiving section 311 for receiving an edge section of the photovoltaic module 2 and a second receiving section 312 for receiving a part of the gutter 15 . Both the first receiving section 311 and the second receiving section 312 have an essentially C-shaped cross section, each with two opposite legs and a connecting leg connecting the opposite legs. The design and the distances between the legs lying opposite one another are preferably adapted to the system components that come to lie between them, ie to the photovoltaic module 2 , more precisely to the frame 22 of the same, and to the gutter 15 .

Both in the case of the first receiving section 311 and in the case of the second receiving section 312, it can prove to be advantageous if the distances between the legs lying opposite one another are greater in the region of the connecting leg than away from it. Then the objects coming to rest between the legs can be pinched there or snap into place. In the case of the first receiving section 311, this can be achieved, for example, in that the opposing legs do not run parallel to one another, but run slightly towards one another. In the example under consideration, the 6 The legs shown above of the opposite legs of the first receiving section 311 are slightly inclined towards the lower leg. When the second receiving portion 312 is one of the opposite legs, in the example considered in the 6 Legs shown above, profiled accordingly. To put it more precisely, this leg initially runs at a certain distance parallel to the opposite leg and then gradually falls away in its direction. This creates a projection on the underside of the upper limb facing the lower limb, which reduces the mutual distance, and a corresponding depression 313 on the upper side of the upper limb.

The upper leg of the opposite leg of the second receiving portion 312 is connected to the lower leg of the first receiving portion 311; the relevant legs merge into one another. The already mentioned strip-shaped depression 313 extending over the entire length of the holding bracket 31 is provided on the upper side of this fastening device area. Like in the 8th is shown, a complementary projection 321 of the clamping piece 32 comes to rest in this depression 313 when the retaining clip 31 and the clamping piece 32 are assembled as intended.

In addition to the projection 321 already mentioned, the clamping piece 32 has a receiving section 322 for receiving part of the holding bracket 31 and a stop 323 for fixing the photovoltaic module in its intended position within the receiving section 311 .

The receiving section 322 has a substantially C-shaped cross section, with two opposite legs and a connecting leg connecting the opposite legs. As in the case of the receiving sections 311 and 312, it can also prove to be advantageous here if the distance between the legs lying opposite one another is greater in the region of the connecting leg than away from it. Then the part of the holding bracket 31 coming to rest in this receiving section 322 can be clamped or latched there. In the example considered, one of the opposite legs of the receiving section 322, in the example considered in FIG 7 upper leg shown above, profiled accordingly. To put it more precisely, this leg initially runs parallel to the opposite leg at a certain distance and then falls away in a step-like manner at a certain distance from the connecting leg towards the opposite leg.

The resulting lowered section of the upper leg also forms the projection 321 (projecting downward). The projection 321 extends over the entire length of the clamping piece 32 and is designed in the form of a strip.

The stop 323 is a plate-shaped extension that extends obliquely upwards from the receiving section 322 and is arranged and designed in such a way that it strikes the frame 21 of the photovoltaic module 2 from the inside and presses the photovoltaic module 2 against the vertical leg of the first receiving section 311 of the retaining bracket 31. if the retaining clip 31 and the clamping piece 32 after the photovoltaic module 2 has been inserted into the receiving section 311 as in FIG 8th shown assembled. In the example under consideration, the clamping piece 32 is pushed onto the holding bracket 31 from the side. In this case, the assembly of the bracket 31 and clamp Piece 32 done with little effort and without or at least without major deformation of the two components. If the clamping piece 32 is sufficiently elastically deformable, it can also be pressed onto the holding bracket 31 from the front, more precisely from the second receiving section 312 of the latter, until the projection 321 of the clamping part 32 engages behind the second receiving section 312 . In both cases, the projection 321 of the clamping piece 32 comes to rest in the depression 313 of the holding bracket 31 .

The headband 31 is as in the 9 illustrated mounted on gutter 15. In this case, the second receiving section 312 is slipped onto one of the upper edges of the roof gutter 15 . The second receiving section 312 is preferably pushed onto that edge of the gutter 15 which faces the roof surface 11, 12, which is formed by the photovoltaic element 2 to be attached to the gutter 15. The second receiving section 312 is pushed onto the edge of the gutter until its connecting leg hits the edge of the gutter at the top. In this state, the upper edge of the gutter is located between the opposite legs of the second receiving section 312. The bracket 31 is then additionally screwed to the gutter 15 by means of a screw 33. In the example under consideration, the screw is a self-drilling screw, preferably a screw with a head seal, such as a so-called sheet metal screw. The area of the holding bracket 31 screwed to the gutter 15 rests against the gutter 15 from the outside and is preferably shaped in such a way that it rests flush against the gutter.

Then, as in 10 illustrated, the lower edge of the photovoltaic module 2 is pushed into the first receiving section 311, namely until the photovoltaic module 2, more precisely the frame 22 of the same, strikes the connecting leg of the first receiving section 311.

Then, as in the 11 and 12 is shown, the clamping piece 32 is pushed onto the holding bracket 31 from the side. The 11 shows how the clamping piece 32 is first positioned next to the bracket 31 before being pushed on, and the 12 shows the state in which the clamping piece 32 has been pushed onto the holding bracket 31. The relative position then assumed by the clamping piece 32 and the retaining clip 31 is off 8th evident. In this state, the projection 321 of the clamping piece 32 lies in the recess 313 of the holding bracket 31, and the stop 323 of the clamping piece 32 strikes the frame 22 of the photovoltaic module 2 and presses it against the connecting leg of the first receiving section 311 of the holding bracket 31. The clamping piece 32 thus ensures that the photovoltaic module 2 is in a predetermined position in relation to the bracket 31, and that the photovoltaic module 2 is fixed in this position. In particular, the photovoltaic module 2 cannot be pulled forwards out of the first receiving section 311 of the holding bracket 31 without first removing the clamping piece 32 . In fact, the clamping piece 32 cannot be separated from the retaining bracket 31 by a forward movement, since these elements are positively connected to one another as a result of the engagement of the projection 321 in the recess 313 with respect to this direction of movement.

In the example under consideration, each photovoltaic module 2 is fastened to the roof gutter 15 by two fastening devices 3 . As in particular from the 2 As can be seen, these fastening devices are arranged in the vicinity of the corners of the respective photovoltaic modules 2 in the example under consideration. However, they can also be arranged further in the middle, and more than two fastening devices can also be provided per photovoltaic module 2 .

It will now be referred to the 13 until 20 described how the already mentioned first connecting device 4 is constructed and used. Using this first connecting device 4 , the upper edge sections of photovoltaic modules 2 forming opposite roof surfaces that face away from the roof gutter 15 and meet one another at the ridge 13 are connected to one another.

The 13 shows the state in which two photovoltaic modules 2 are connected to one another using the first connecting device 4 .

The connecting device 4 consists of several separate items, namely one in the 14 shown wedge 41 and two in the 15 brackets 42 shown. These connector components are as in FIG 16 illustrated interconnectable. The brackets 42 can also be connected to one of the photovoltaic modules 2 to be connected to one another, more precisely to the respective frame 22 of the same (see, for example, 13 ) .

In the example under consideration, the named components of the first connecting device 4 consist of metal, but could also consist of another material, for example plastic. To be more precise, the aluminum profiles in question are a few cm long. The holder 42 could also be formed by a correspondingly curved plate.

The holders 42 and the wedge 41 are arranged and designed such that the wedge comes to rest in the space between the upper ends of the photovoltaic modules 2 to be connected to one another and strikes the sides of the photovoltaic modules 2 facing the wedge 41 .

The wedge 41 has a cross section in the shape of an isosceles symmetrical trapezium. The shape and the size of the trapezium are preferably such that the surfaces of the frames 22 of the photovoltaic modules 2 facing the wedge 41 and the surfaces of the wedge 41 facing the frame 22 are connected to one another in the intended state (see, for example, 13 ) are in full contact with each other.

The wedge 41 has a first receiving section 411 for receiving a coupling section 421 of the first bracket 42, and a second receiving section 412 for receiving a coupling section 421 of the second bracket 42. The receiving sections 411, 412 have cross sections which correspond to the cross sections of the coupling sections 412 of the brackets 42, and serve to establish a connection between the wedge 41 and the brackets 42.

The wedge 41 also has a bore 413 running vertically through it. Additional system components can be fastened to the wedge 41 via this bore 413 . In the example considered, the roof ridge 13 sealing covers 61 and 62 at the top and bottom are fastened here. Additionally or alternatively, however, other objects can also be fastened here.

The bracket 42 includes the aforementioned coupling section 421 for connecting the bracket 42 to the wedge 41 and a receiving section 422 for connecting the bracket 42 to the photovoltaic module 2 by receiving part of the frame 22 of the photovoltaic module 2 in the receiving section 422. The coupling section 421 and the Receiving portions 422 are formed by opposite end portions of bracket 42 .

In the example considered, the coupling section 421 has the shape of an angled plate, ie an angled cross section. However, it can also have a different cross section, for example an arcuate cross section, or some other non-straight cross section. However, the coupling section 421 is preferably arranged and shaped on the bracket 42 in such a way that the wedge 41 and the brackets 42 can only be connected to one another by being pushed into one another laterally and separated from one another by being pulled apart laterally, more precisely only by a longitudinal extension of the roof ridge 13 movement of the wedge 41 and/or the brackets 42 can be connected and disconnected. The resulting connection is preferably a positive connection, which prevents the wedge 41 and the brackets 42 from being able to be separated from one another by movement perpendicular to the longitudinal direction of the roof ridge 13 . In particular, it should not be possible, for example, for the wedge 41 to simply be pulled off upwards, or for the holders 42 to be pulled out of the wedge 41 by folding away or lifting the photovoltaic modules 2 .

The receiving section 422 has a substantially C-shaped cross-section, with two opposite legs and a connecting leg connecting the opposite legs. The receiving section 422 is designed to be connected to a part of the frame 22 of the photovoltaic module 2 by slipping it on. To put it more precisely, the receiving section 422 is plugged onto the underside 223 of the frame 22 from the inside. The legs of the receiving section 422 lying opposite one another are preferably arranged, designed and adapted in such a way that the part of the frame 22 which comes to rest in between is clamped between the legs or fixed in some other way.

The following is with reference to the 17 until 22 described how two photovoltaic modules 2 are connected to one another using the first connecting device 4 . To avoid misunderstandings, it should be noted that the connecting device 3 only ever connects two photovoltaic modules, more precisely two photovoltaic modules that are located opposite one another and are provided on adjacent roof surfaces. In the example under consideration, this connection takes place only after the above-described attachment of the photovoltaic modules 2 to be connected to the roof gutter 15, although this is not absolutely necessary.

In a first step, a first bracket 42 is attached to the frame 22 of the first of the photovoltaic modules 2 to be connected to one another. For this purpose, the receiving section 422 of the holder 42 is pushed onto the underside 223 of the frame from the inside as far as it will go. The photovoltaic module 2 with the mount 42 mounted on it is in 17 shown. In this state, the coupling portion 421 of the bracket 42 comes to lie adjacent to the outside 331 of the frame 22 so that it is freely accessible.

In the next step, the wedge 41 is pushed onto the coupling section 421 . For this purpose, the wedge 41 is first aligned in relation to the holder 42 such that the coupling section 421 and the associated receiving section 411 of the wedge 41 coincide, and then the wedge 41 is moved in the longitudinal direction of the roof ridge 13 towards the coupling section 421 . Along with this, the wedge 41 and the holder are pushed into one another. More specifically, the receiving portion 411 of the wedge 41 is slid over the coupling portion 421 of the bracket 42 . Alternatively, the coupling section 421 could also be pushed into the receiving section 411 of the wedge 41 by a corresponding movement of the holder 42 . This creates the in 18 arrangement shown. In this state, the coupling section 421 of the holder 42 is located in the first receiving section 411 of the wedge and essentially fills it completely. At the same time, due to the arrangement and shape of the coupling section 421 and the receiving section 411, the wedge 41 is automatically positioned in relation to the photovoltaic module 2 in such a way that the side of the wedge 41 facing the outside 221 of the frame 22 bears against the outside 221 over its entire surface.

The second holder 42 is then pushed onto the second of the photovoltaic modules 2 to be connected to one another. This is done as above with reference to the 17 already described plugging the first holder 42 onto the first photovoltaic module 2. The state that is set is in 19 illustrated.

The coupling section 421 of the second holder 42 is then connected to the wedge by being inserted into the associated receiving section 412 of the wedge 41 . For this purpose, the first photovoltaic module 2 with the wedge 41 attached thereto and the second photovoltaic module 2 with the second holder 42 attached thereto are aligned such that the coupling section 421 of the second holder 42 and the associated receiving section 412 of the wedge 41 coincide. Thereafter, the second bracket 42 is slid on the frame 22 in the longitudinal direction of the roof ridge 13 toward the coupling portion 421 . At the same time, the coupling section 421 of the holder 42 is pushed into the receiving section 411 of the wedge 41 . In this way, a connection also arises between the second photovoltaic module 2 and the wedge 41 , this connection corresponding in all details to the connection between the first photovoltaic module 2 and the wedge 41 . Thus, the two photovoltaic modules 2 to be connected to one another are now firmly connected to one another via the wedge 41 and the two holders 42 .

Deviating from the assembly described above, it could also be provided that the brackets 42 are attached right at the beginning to both of the photovoltaic modules 2 to be connected to one another, and then - after appropriate alignment of both brackets 42 and the wedge 41 - the wedge in a single operation over both brackets 42 is pushed simultaneously.

In the example considered, the two photovoltaic modules 2 to be connected are each connected to one another by two connecting devices 4 as described. In the example under consideration, the connecting devices 4 are arranged in the vicinity of the corners of the respective photovoltaic modules 2 . However, they can also be arranged further in the middle, and more than two connecting devices can also be provided per photovoltaic module pair.

The roof ridge 13 is preferably provided with a covering 61 covering the roof ridge 13 and coming to lie above the connecting device 4 .

To avoid misunderstandings, it should be noted that this cover 61 is preferably installed at the very end, more precisely after all the photovoltaic modules 2 to be covered by the relevant cover 61 have been installed and connected to one another as described.

As will be better understood later, the cover 61 has a dual function. On the one hand, it closes the roof ridge 13 at the top and thereby prevents air, water, dust, etc. from entering the greenhouse via the roof ridge 13 . And on the other hand, the arrangement consisting of the photovoltaic modules 2 and the connecting devices 4 connecting them to one another is also braced and reinforced by the cover 61 and its installation, which is described in more detail below. The cover 61 and the accessories required for assembly can therefore also be regarded as components of the connecting device 4.

In the example under consideration, the cover 61 is formed by an elongated strip which extends over the entire length of the roof ridge 13 and preferably completely closes and seals the roof ridge at the top. If required, the cover 61 can be composed of several shorter cover elements arranged one behind the other in a row.

For the assembly of the cover 61 several are below the wedges 41 to lie Counterparts 62 and several screws 63 and nuts 64 are provided.

The cover 61 and the elements required for its assembly are made of metal in the example considered, but could also be made at least partially of another material, for example plastic. In the example considered, the cover 61 and the counterparts 62 are formed by aluminum profiles, with the cover 61 being able to be up to several meters long, whereas the counterparts 62 are only about as long as the wedges 41 and the brackets 42, i.e. only a few centimeters long are.

The cover 61 is so wide that it extends over the photovoltaic modules 2 . To put it more precisely, the lateral edge sections of the cover 61 come to rest on the upper side 222 of the photovoltaic module frames 22 from above.

The lateral edge sections run parallel to the upper sides 222 of the photovoltaic module frames 22, so that they rest on them over their entire surface.

An elastic seal is preferably provided between the lateral edge sections of the cover 61 and the frame sections covered thereby. The penetration of air, water, dust, etc. via the roof ridge 13 can be prevented even better by this seal.

The central region of the cover 61 lying between the lateral edge sections of the cover 61 is formed by a horizontal surface in the example under consideration, but could in principle also be aligned and shaped differently.

A web 611 extends downward from the underside of the lateral edge sections of the cover 61 and runs parallel to the lateral outer side 221 of the photovoltaic module frame 22 covered by the edge section. Like in particular 13 As can be seen, the webs 611 are also arranged and designed in such a way that, when the cover 61 is installed as intended, they strike laterally against the lateral outer sides 221 of the photovoltaic module frames 22 covered by the edge sections, and at the same time strike the wedges 41 from above.

On the underside of the central portion of the cover 61, there is provided a channel 612 having a rectangular cross-section extending in the longitudinal direction thereof and extending over the entire length of the cover 61. FIG. A slot is formed in the bottom of the channel 612 and extends the full length of the channel. The channel 612 is dimensioned such that the head of the screw 63 can be inserted into it from the side. The shank of the screw 63 protrudes downwards out of the channel 612 through the slot. The screw 63 is slidable along the channel 612 and can thus be positioned as desired. The channel 612 and the head of the screw 63 are shaped and dimensioned such that the screw head cannot exit the channel via the slot and that when inserted into the channel 621 the screw head is not rotatable and so is the entire screw 63 is rotatable.

The counterparts 62 used to mount the cover 61 have in the example considered the same cross-section as the cover 61. More precisely, each is a shorter piece of the cover 61. The only real difference is that in the central horizontal Area of the counterpart 62 a hole 621 is provided. That is, the counterparts 62 can be made simply by cutting an appropriately long piece from the cover 61 and drilling the hole 621, or by appropriately utilizing leftover scraps of cover. The use of a profile, for example an extruded profile, for the production of several system components reduces the production costs and simplifies storage. Although the counterparts 62 in this case have various configurations (web 611 and channel 612) on their underside, which are only required for the cover 61 and are not required for the counterparts 62, these configurations are arranged and designed in such a way that their Presence on the bottom cover does not constitute a disadvantage either in terms of assembly or in terms of function. Of course, covers 61 and counterparts 62 can be used, which are designed and manufactured independently of one another.

While the cover 61 is provided above the wedges 41, the counterparts 62 are placed below the wedges 41. Like in particular 13 As can be seen, the counterparts 62 - like the cover 61 - are so wide that they extend over the photovoltaic modules 2 . To put it more precisely, the lateral edge sections of the counterparts 62 come to lie on the areas of the holders 42 from below, which run along the underside 223 of the photovoltaic module frames 22 .

The lateral edge sections of the counterparts 62 run parallel to the undersides 223 of the photovoltaic module frames 22, so that they rest over their entire surface on the holders 42, which also run parallel thereto.

In the example considered, the screw 63 is a hexagonal screw or some other screw with a varying head diameter. As already mentioned above, the channel 612 of the cover 61 accommodating the screw head and the screw head are adapted to one another in such a way that the screw head cannot be rotated within the channel and the screw 63 is thus held on the upper cover 61 by the channel so that it cannot rotate.

The nut 64 is designed to be screwed onto the shank of the screw 63 .

As already mentioned above, the cover 61 is attached to the wedges 41 of the first connecting device 4 . How this happens is in particular in the 20 illustrated. The fully assembled state is off 13 evident.

First, the heads of the screws 63 required for attachment are pushed laterally into the channel 612 of the cover 61 . The cover 61 is preferably fastened to each of the wedges 41 installed, so that one screw 63 is provided for each wedge 41 installed. The shanks of the screws 63 protruding downwards from the channel 612 are inserted through the vertical bores 413 of the wedges 41 . The shanks pass completely through the wedges 41 and protrude from below. The counterpart 62 is then pushed onto the lower end of each shank from below, so that the screw shank passes through the bore 621 of the counterpart 62 . The nut 64 is then screwed onto the end of the screw shank protruding downwards from the counterpart 62 and tightened as far as it will go. So that the channel on the underside of counterpart 62, through which the screw shank passes but is otherwise not used, does not impair the screwing of the nut onto the screw shank, a washer coming to rest between nut 64 and channel is preferably provided.

This process is repeated for all the wedges 41 in turn. The end result is in 13 illustrated.

By screwing the nut 64 onto the screw 63, the cover 61 is pulled down so that its lateral edge sections are pressed firmly from above against the frames 22 of the connected photovoltaic modules 2. At the same time, the webs 611 of the cover 61 strike the frame 22 laterally and the wedges 41 from above.

By screwing the nut 64 onto the screw 63, the counterpart 62 is also pushed upwards, so that its lateral edge sections press the holders 42 firmly from below against the frames 22 of the connected photovoltaic modules 2.

• - dass die Photovoltaikmodule 2 zwischen der Abdeckung 61 und dem Gegenstück 62 eingeklemmt werden und nicht mehr relativ zueinander bewegbar sind,
• - dass die Keile 41 maximal weit in den Spalt zwischen den Photovoltaikmodulen 2 gedrückt werden und nicht mehr relativ zu den Photovoltaikmodulen 2 bewegbar sind,
• - dass die Halterungen zwischen den Photovoltaikmodul-Rahmen 22 und den Gegenstücken eingeklemmt werden und nicht mehr relativ zu diesen bewegbar sind, und
• - dass die Abdeckung 61 und das Gegenstück 62 so gegen die Photovoltaikmodule 1 gedrückt werden, dass sie nicht mehr relativ zu diesen bewegbar sind.

As a result,

• - that the photovoltaic modules 2 are clamped between the cover 61 and the counterpart 62 and can no longer be moved relative to one another,
• - that the wedges 41 are pressed as far as possible into the gap between the photovoltaic modules 2 and can no longer be moved relative to the photovoltaic modules 2,
• - That the holders are clamped between the photovoltaic module frame 22 and the counterparts and can no longer be moved relative to them, and
• - That the cover 61 and the counterpart 62 are pressed against the photovoltaic modules 1 that they can no longer be moved relative thereto.

Accordingly, from those in the 13 shown and interconnected items not a single item movable relative to one of the other items.

It will now be referred to the 21 until 27 described how the already mentioned second connection device 5 is constructed and used. Photovoltaic modules 2 arranged next to one another are connected to one another using this connecting device 5 . To be more precise, the second connecting device 5 connects a first photovoltaic module 2 and a second photovoltaic module 2 , which is laterally adjacent thereto, of a row of photovoltaic modules forming a roof area.

The 21 until 23 show a first embodiment, and the 24 until 27 a second embodiment of the connecting device 5.

The second connecting device 5 according to the first embodiment consists of several separate items, namely one in the 22 shown first bracket 51, one in the 23 shown second bracket 52, a screw 53, and a nut 54. These connector components are as in FIG 21 can be connected to the frame 22 of the photovoltaic modules 2 to be connected and to one another. More precisely, the first bracket 51 is applied to the frame 22 of the first of the photovoltaic modules 2 to be connected, the second Bracket 52 is attached to the frame 22 of the second of the photovoltaic modules 2 to be connected, and then the two brackets 51, 52 are connected together using the screw 53 and the nut 54.

The components of the second connecting device 5 mentioned are made of metal in the example under consideration, but could also be made of a different material, for example plastic. In the present case, the brackets 51, 52 are aluminum profiles that are a few centimeters long. However, the brackets could also be formed by appropriately curved plates.

The first clamp 51 has a horizontal leg 511 and a vertical leg 512 extending downward approximately in the middle.

At one end, the horizontal leg 511 has a receiving section 513 for receiving part of the frame 22 of the first of the photovoltaic modules to be connected to one another. The receiving section 513 has a substantially C-shaped cross section, with two opposite horizontal legs and a vertical connecting leg connecting the opposite legs. The receiving section 513 can be plugged onto the underside 223 of the frame 22, i.e. it serves to receive the lower part 223 of the frame 22. The opposing legs of the receiving section 513 are preferably arranged, designed and adapted in such a way that the part of the frame 22 that comes to lie between them is clamped between the legs or fixed in some other way. The end of the horizontal leg 211 opposite the receiving section 513 and facing the second photovoltaic module 2 is formed by a horizontal surface and is designed to rest against the underside 223 of the frame 22 of the second photovoltaic module 2 from below.

The vertical leg 512 has a channel 514 with a rectangular cross section on its side facing the second photovoltaic module 2 , a slot extending over the entire length of the channel being formed in the side of the channel facing the second photovoltaic module 2 . The channel 514 is dimensioned such that the head of the screw 53 can be inserted into it from the side. The shank of the screw 53 protrudes laterally through the slot, more precisely towards the second photovoltaic module 2, ie according to FIG 21 and 22 to the right, out of channel 514. The screw 53 is slidable along the channel 514 and can thus be positioned as desired. The channel 514 and the head of the screw 53 are shaped and dimensioned such that the screw head cannot exit the channel via the slot, and when inserted into the channel 514 the screw head is not rotatable and therefore the entire screw 53 is not is more rotatable.

The second clamp 52 has a horizontal leg 521 and a vertical leg 522, the vertical end of the horizontal leg 521 facing the first photovoltaic module 2 deviating downward from the latter.

At the end opposite the vertical leg 522, the horizontal leg 521 has a receiving section 523 for receiving part of the frame 22 of the second of the photovoltaic modules to be connected to one another. The receiving section 523 has a substantially C-shaped cross section, with two opposite horizontal legs and a vertical connecting leg connecting the opposite legs. The receiving section 523 can be pushed onto the underside 223 of the frame 22, i.e. it serves to receive the lower part 223 of the frame 22. The mutually opposite legs of the receiving section 523 are preferably arranged, designed and adapted in such a way that the part of the frame 22 that comes to lie between them is clamped between the legs or fixed in some other way.

A hole 524 is formed in the vertical leg 522 at the level of the channel 514 formed on the vertical leg 512 of the first bracket 51 .

In the example under consideration, the screw 53 is a hexagonal screw or some other screw with a varying head diameter. As already mentioned above, the channel 514 of the first bracket 51 accommodating the screw head and the screw head are adapted to one another in such a way that the screw head cannot be rotated within the channel 514 and the screw 53 is thus held on the first bracket 51 in a twist-proof manner by the channel .

The nut 54 is designed to be screwed onto the shank of the screw 63 .

• - zunächst der Aufnahmeabschnitt 513 der ersten Klammer 51 auf die Unterseite 223 des Rahmens 22 des erste Photovoltaikmoduls 2 aufgesteckt,
• - dann (oder schon zuvor) der Kopf der Schraube 53 in den Kanal 514 der ersten Klammer 51 eingeschoben, sodass der Schaft der Schraube durch seitlichen Schlitz hindurch in Richtung zweites Photovoltaikmodul 2 aus dem Kanal 514 herausragt,
• - dann der Aufnahmeabschnitt 523 der zweiten Klammer 52 über die Unterseite 223 des Rahmens 22 des zweiten Photovoltaikmoduls 2 und des darunter verlaufenden Endes des horizontalen Schenkels 511 der ersten Klammer 51 aufgesteckt, mit gleichzeitiger Ausrichtung der Schraube 53 und der zweiten Klammer 52, sodass einhergehend mit den Aufstecken der zweiten Klammer 52 der Schaft der Schraube 53 durch das Loch 524 in der zweiten Klammer 52 hindurch gelangt, und
• - schließlich die Mutter 54 (vorzugsweise zusammen mit einer Beilagscheibe) auf den Schraubenschaft aufgedreht und angezogen wird.

To connect two adjacent photovoltaic modules 2 using the second connecting device 5 is

• - First, the receiving section 513 of the first clip 51 is placed on the underside 223 of the frame 22 of the first photovoltaic module 2,
• - Then (or already before) the head of the screw 53 is pushed into the channel 514 of the first clamp 51, so that the shank of the screw protrudes through the lateral slot in the direction of the second photovoltaic module 2 from the channel 514,
• - Then the receiving section 523 of the second clamp 52 is placed over the underside 223 of the frame 22 of the second photovoltaic module 2 and the end of the horizontal leg 511 of the first clamp 51 running underneath, with simultaneous alignment of the screw 53 and the second clamp 52, so that along with fitting the second bracket 52, the shank of the screw 53 passes through the hole 524 in the second bracket 52, and
• - finally the nut 54 (preferably together with a washer) is screwed onto the screw shank and tightened.

In the resulting, in the 21 illustrated connection of the photovoltaic modules 2, these are drawn together and fixed as far as possible by the clamps 51 and their screw connection. In the resulting pressed state of the photovoltaic modules 2 and the clamps 51, 52, these can no longer be moved relative to one another.

In this exemplary embodiment, the screw 53 and the nut 54 act as a clamping device for pulling together the photovoltaic modules 2 to be connected to one another.

The second connecting device 5 according to the second embodiment consists of a 25 bracket 55 shown and one in FIG 26 shown wedge 56, which as in the 24 and 27 shown in an existing between the photovoltaic modules 2 and the bracket 55 recess can be inserted. The bracket 55 is as in the 24 shown can be connected to the two photovoltaic modules 2 to be connected. More precisely, the clamp 55 is attached to the frame 22 of both of the photovoltaic modules 2 to be connected to one another, and then stiffened by inserting the wedge 56 into the recess and braced with the frame.

In the example under consideration, the clamp 55 consists of metal, but could also consist of another material, for example plastic. The present case is an aluminum profile a few centimeters long. However, the clip could also be formed by a correspondingly curved plate.

The clip 55 is an elongate element which has a first receiving section 551 at one end for receiving the underside 223 of the frame 22 of the first photovoltaic module 2, and at the end opposite this end has a second receiving section 552 for receiving the underside 223 of the Frame 22 of the second photovoltaic module 2, and has a third receiving section 553 for receiving the wedge 56 in the area lying in between.

The first accommodating section 551 and the second accommodating section 552 have a substantially C-shaped cross section, each with two horizontal legs lying opposite one another and a vertical connecting leg connecting the opposite legs. The legs of the receiving sections 551, 552 lying opposite one another are preferably arranged, designed and adapted in such a way that the part of the frame 22 which comes to lie between them is clamped between the legs or fixed there in some other way.

The receiving sections 551, 552 can each be plugged onto the underside 223 of the frames 22 to be connected. The second receiving section 552 has a shorter upper horizontal leg to facilitate assembly. For the same reason, the clamp 55 is at least sufficiently elastically deformable that the undersides 223 of the frames 22 can be brought into the receiving sections 551, 551.

The third receiving portion 553 has a U-shaped cross section. If the clip 55 as described and in particular in the 24 shown is connected to the photovoltaic modules 2, and the receiving section 553, in cooperation with the photovoltaic modules 2 coming to lie above it, defines a cuboid recess open at the front and rear, into which the wedge 56 can be inserted from the front or from the rear.

To establish a connection between two photovoltaic modules 2 arranged next to one another, these are first connected to one another by attaching the clamp 55 to the frame, more precisely by plugging the receiving sections 551 , 662 onto the underside 223 of the frame 22 . The wedge 56 is then pushed into the recess formed by the third receiving section 553 in cooperation with the photovoltaic modules 2 . As in particular from the 27 As can be seen, the wedge is higher on one side (front in the example shown) than on the opposite side. The height of the higher side of the wedge 56 is greater than the height of the recess into which it is to be inserted, and the height of the low rigeren side of the wedge 56 less than the height of the recess. If this wedge is now pushed into the recess with the lower side first, the clip 55 initially resting at the bottom of the photovoltaic modules will sooner or later be pushed away from the photovoltaic modules by the wedge 56 . This change in the shape of the clamp area located between the receiving sections 551, 552 causes the photovoltaic modules 2 to be drawn towards one another by the clamp 55 and to be held in this position.

In this exemplary embodiment, the wedge 56 thus acts as a tensioning device for pulling together the photovoltaic modules 2 to be connected to one another.

Irrespective of which of the connecting devices described above is used, photovoltaic modules 2 arranged next to one another are preferably connected to one another by two or more connecting devices 5 in each case. These multiple connection devices are preferably distributed evenly over the sides of the photovoltaic modules 2 that face one another.

It should be obvious and does not require any further explanation that the photovoltaic module installation presented here can be modified in many ways.

Among other things, there is no compelling need to attach the photovoltaic modules 2 to the roof gutter 15. The photovoltaic modules could also be attached to another part of the building that is preferably not formed by the roof. This does not necessarily have to be done using the fastening device 3; in this case, the fastening device used is preferably adapted to the given conditions.

Reference List

1

Roof

2

photovoltaic module

3

Fastening device for fastening 2 to 15

4

First connecting device for connecting the upper ends of photovoltaic modules 2 provided on opposite roof surfaces 11

5

second connecting device for connecting the mutually facing sides of photovoltaic modules 2 provided next to one another

11

roof surface

12

oppositely inclined roof surface

13

First

14

eaves

15

gutter

21

Solar panel from 2

22

frame of 2

31

mounting bracket

32

clamping piece

33

screw

41

wedge

42

bracket

51

first bracket

52

second bracket

53

screw

54

Mother

55

bracket

56

wedge

61

cover on 13

62

counterpart

63

screw

64

Mother

221

lateral outside of 22

222

Top of 22

223

Bottom of 22

311

first receiving section at 31 for partial receiving of 2

312

second receiving section at 31 for partial receiving of 15

313

deepening in 31

321

lead at 32

322

recording section at 32

323

Stop at 32

411

first recording section in 41

412

second recording section in 41

413

Hole in 41

421

Coupling section of 42

422

Recording section of 42

511

horizontal leg of 51

512

vertical leg of 51

513

Recording section at 511

514

channel to 512

521

horizontal leg of 52

522

vertical leg of 2

523

Recording section at 521

524

Hole in 522

551

first recording section at 55

552

second recording section at 55

553

third recording section at 55

611

Jetty at 61

612

Channel at 61 for head of 63

621

hole in 62

Claims (18)

Fastening device for fastening a photovoltaic module forming part of a roof of a building to the building, characterized in that the fastening device has a first receiving section for receiving an edge section of the photovoltaic module and a second receiving section for receiving part of a building, and in that the second receiving section is designed to to be attached to a gutter of the building. fastening device claim 1 , characterized in that the first receiving section has a substantially C-shaped cross-section, with two legs lying opposite one another, and in that the first receiving section is arranged and designed in such a way that the edge section of the photovoltaic module to be held by it can be inserted between the legs lying opposite one another is and is held there by the thighs. fastening device claim 1 or 2 , characterized in that the second receiving section has a substantially C-shaped cross-section, with two legs lying opposite one another, and in that the second receiving section is arranged and designed in such a way that it can be pushed onto an edge of the roof gutter from above and is held there . Fastening device according to one of the preceding claims, characterized in that the second receiving section is arranged and designed in such a way that it can be screwed to the roof gutter. Fastening device according to one of the preceding claims, characterized in that the receiving sections are at least partially elastic in order to enable a clamping connection or a latching connection with the photovoltaic module and/or with the roof gutter. Fastening device according to one of the preceding claims, characterized in that the fastening device comprises a first fastening device component and a second fastening device component which can be connected thereto, the first fastening device component being the component on which the first receiving section and the second receiving section are formed , and wherein the second fastening device component is arranged in relation to the photovoltaic module inserted into the first receiving section when properly attached to the first fastening device component in such a way that it immovably stands in the way of the photovoltaic module being moved out of the first receiving section. fastening device claim 6 , characterized in that the second fastening device component can be slid onto the first fastening device component from the side, with an elevation provided on one of the fastening device components coming to rest in a complementary depression provided on the other fastening device component, so that no Relative movements can take place perpendicular to the push-on direction. Connecting device for connecting upper ends of two photovoltaic modules meeting at a roof ridge, which form parts of opposite roof surfaces of a pitched roof, characterized in that the connecting device - a first holder which can be connected to a first of the photovoltaic modules to be connected to one another, - a second holder, which can be connected to a second of the photovoltaic modules to be connected to one another, - and comprises a wedge that can also be connected to the holders, the holders and the wedge being designed in such a way that the wedge lies in an intermediate space between the upper ends of the photovoltaic modules to be connected to one another comes. Connection device according to claim 8 , characterized in that the holders and the wedge are designed in such a way that the wedge can be positioned in relation to the photovoltaic modules to be connected to one another in such a way that it rests against the sides of the photovoltaic modules facing the wedge. Connection device according to claim 8 or 9 , characterized in that each of the holders has a receiving section for receiving a photovoltaic module edge section, the receiving section in each case having a substantially C-shaped cross section and being arranged and designed such that it can be plugged onto the edge section of the photovoltaic module to be received by it. Connecting device according to one of Claims 8 until 10 , characterized in that the wedge has receiving sections for receiving the holder sections to be brought into connection with the wedge, and in that the wedge and the holders are designed in such a way that the holder sections to be received by the holder sections can be pushed into the holder sections from the side. Connection device according to claim 11 , characterized in that the bracket sections to be brought into connection with the wedge have a non-straight course. Connecting device according to one of Claims 8 until 12 , characterized in that it comprises a cover closing the roof ridge at the top, which is arranged above the wedge and whose lateral edge sections extend over the photovoltaic modules. Connection device according to Claim 13 , characterized in that it comprises a counterpart which is arranged below the wedge and whose lateral edge portions extend below the photovoltaic modules. Connection device according to Claim 14 , characterized in that the cover and the counterpart are connected to one another by means of a screw running through the wedge and the counterpart such that a force is exerted on the further arrangement components in contact with the cover and the counterpart, holding them in their intended relative position. Connecting device for connecting adjacent photovoltaic modules forming parts of a roof surface, characterized in that the connecting device comprises at least one clamp, the at least one clamp - a first receiving section for receiving an edge section of a first of the photovoltaic modules to be connected to one another, - a second receiving section for receiving a Edge section of a second of the photovoltaic modules to be connected to one another, and - comprises a clamping device for pulling together the first and the second photovoltaic module. Connection device according to Claim 16 , characterized in that the at least one clip comprises a first clip containing the first receiving portion and a second clip containing the second receiving portion, and in that the tightening device is formed by a screw connection by which the first clip and the second clip are drawn towards one another. Connection device according to Claim 16 , characterized in that the at least one clamp is formed by a single clamp containing the first receiving section and the second receiving section, and in that the tensioning device is formed by a wedge, through which the shape of the clamp area lying between the receiving sections of the clamp can be changed.

Images