DE102014208303B4 - Fastening device for fastening photovoltaic modules - Google Patents

Abstract

Fastening device for fastening photovoltaic modules (M1, M2), each photovoltaic module (M1, M2) having a frame (R1, R2) with a peripheral side wall (16a, 16b), one of which is held in the frame (R1, R2). Photovoltaic elements (18) facing away from the underside of the frame legs (17a, 17b) extending towards the inside of the frame, the fastening device comprising a fastening plate (1) on which hook-like insertion sections (2, 3) with insertion slots (9, 9a, 9b , 13, 13a, 13b) are provided, in each of which a frame leg (17a, 17b) of a photovoltaic module (M1, M2) can be inserted, and wherein in the fastening plate (1) in a between the two insertion sections (2, 3) formed In the intermediate section (4) a first opening (5) is provided for passing through a fastening means (19a), characterized in that between at least one of the plug-in sections (2, 3) and the fastening mounting plate (1), a spacer (11a, 11b, 11c, 11d) is provided, a first spacer (11a, 11b) being formed from two first support walls (11a, 11b) extending from the mounting plate (1), in which respectively a first insertion slot (9, 9a, 9b) with a first support base (10, 10a, 10b) is provided, the first support base (10, 10a, 10b) having an angle of 160° to 180° with the fastening plate (1), preferably 165° to 175°, a second spacer (11c, 11d) being formed from two second support walls (11c, 11d) extending from the fastening plate (1), in each of which a second insertion slot (13, 13a, 13b ) is provided with a second support floor (20, 20a, 20b), and wherein the second support floor (20, 20a, 20b) is arranged substantially parallel to the mounting plate (1).

Description

The invention relates to a fastening device for fastening photovoltaic modules according to the preamble of claim 1.

From the FR 2 996 384 A1 a fastening device for photovoltaic modules is known, which comprises a frame and a peripheral side wall. On its underside, the frame has frame legs directed towards the inside of the frame. The frame carrying a photovoltaic module is fastened to a substrate by means of screws. The fastening can also take place indirectly by means of an adapter screwed to a base.

A generic fastening device is from WO 2012/014203 A2 known. The known fastening device comprises a number of parts, namely a fastening plate on which hook-like insertion sections are provided in an arrangement opposite one another. The insertion sections each have an insertion slot for inserting a frame piece of a photovoltaic module. In the fastening plate, in an intermediate section formed between the two insertion sections, a first opening is provided for passing through a fastening means, for example a screw.

The known fastening device is disadvantageous in several respects. The frame legs of photovoltaic modules available on the market differ in their thickness. In order to be able to universally fasten a large number of photovoltaic modules from different manufacturers using the fastening device, a slot width of the insertion slots must be greater than a maximum thickness of the frame legs of the photovoltaic modules available on the market. This in turn has the consequence that when photovoltaic modules are fastened with frame legs of a relatively small thickness, these are not held firmly in the insertion sections. In this case, it is necessary to force the frames of the photovoltaic modules accommodated in the fastening device against the fastening plate by means of an additional hold-down device. The provision of an additional hold-down device is complex and makes assembly more difficult.

Sometimes a roof surface formed from trapezoidal sheets, for example, is not completely flat. i.e. Fastening devices attached to it may be slightly tilted in relation to one another. This can make it difficult to assemble or disassemble the photovoltaic modules.

In particular when the photovoltaic modules are mounted on a roof made of sheet metal, the photovoltaic modules sometimes heat up considerably, as a result of which the performance of the photovoltaic modules decreases considerably.

The object of the invention is to eliminate the disadvantages of the prior art. In particular, an easy-to-manufacture and mountable fastening device is to be specified, which is universally suitable for fastening photovoltaic modules with frame legs designed with different thicknesses. According to a further aim of the invention, a reduction in the output of the photovoltaic modules as the temperature increases is to be counteracted.

This object is solved by the features of claim 1. Expedient configurations of the invention result from the features of claims 2 to 15.

According to the invention, it is proposed that a spacer be provided between at least one of the insertion sections and the fastening plate.

By providing a spacer between the plug-in section and the mounting plate, it is possible with a mounting device that is already mounted, for example, on a trapezoidal sheet metal, to grip this at the plug-in section, which is mounted higher by the spacer than the mounting plate, and to bend it into a suitable mounting position to facilitate mounting. The provision of a spacer between the fastening plate and at least one of the plug-in sections also contributes to improved rear ventilation of the photovoltaic modules. A drop in performance as the temperature increases can thus be counteracted.

For the purposes of the present invention, the term “mounting plate” is generally understood to mean a plate-like fastening device which can be mounted essentially in a form-fitting manner on a flat base. The mounting plate can be designed in one piece or in multiple pieces. In the case of a multi-part configuration, the several fastening plate parts, in particular exactly two fastening plate parts, can be connected to the fastening plate in an essentially form-fitting manner during assembly by means of a connecting device. The connection can advantageously be made by assembly elements, in particular screws, which are used to fasten the fastening plate or the fastening plate parts to the base.

According to an advantageous embodiment, the spacer has a height of at least 5 mm, preferably at least 8 mm. Expediently the spacer has a height in the range of 10 to 25 mm. The suggested height facilitates assembly and allows adequate rear ventilation. At the same time, however, the proposed height is sufficiently small to keep the forces that are lifted off in the event of wind attack to a minimum.

The spacer can be designed in different ways. The spacer expediently comprises at least one supporting wall running parallel or perpendicular to the course of the insertion slot.

According to a further advantageous embodiment of the invention, a spacer is provided between each of the plug-in sections and the mounting plate.

A first spacer can be formed from a first hollow profile extending from the mounting plate with a first support base arranged opposite the mounting plate, the first insertion section being formed from a first L-shaped leg extending from the first support base. Similarly, a second spacer can be formed from a second hollow profile extending from the mounting plate with a second support base arranged opposite the mounting plate, the second insertion section being formed from a second L-shaped leg extending from the second support base.

According to a further advantageous embodiment, the second hollow profile has a rectangular cross section. According to the invention, the second support base is arranged essentially parallel to the fastening plate.

According to the invention, a first spacer is formed from two first support walls which extend from the fastening plate and in each of which a first insertion slot with a first support base is provided. In an analogous manner, a second spacer is formed from two second support walls which extend from the fastening plate and in each of which a second insertion slot with a second support base is provided. The proposed configuration can be produced particularly easily by first producing a metal sheet with a suitable shape by means of laser cutting and then forming the first and/or second support walls by means of edges. In this case, the fastening device is designed in sections in the manner of a U-profile, with the legs of the U-profile being formed by the first and/or second support walls. The openings of the first and/or second insertion slots each point towards the opposite insertion section. In this configuration, the first and/or second support base is narrow. Its width corresponds to a thickness of the sheet metal used.

According to the invention, the first support base forms an angle of 160° to 180°, preferably 165° to 175°, with the fastening plate, the first support base advantageously being inclined towards the first opening. In this case, when installing a photovoltaic module, e.g. B. the first L-shaped leg and / or the frame legs are elastically deformed. The restoring force generated by the elastic deformation causes the photovoltaic module to be held in the fastening device with a non-positive fit. Such a non-positive hold is also guaranteed when the thickness of the frame piece is smaller than the slot width of the insertion slots. The proposed fastening device is universally suitable for fastening photovoltaic modules with frame pieces of different thicknesses. In a departure from the prior art, the provision of a separate hold-down device for forcing the frame against the fastening plate can be dispensed with.

According to a further advantageous embodiment, a distance between the insertion slots, i. H. between the opening levels perpendicular to the mounting plate, at least 40 mm. It is expediently 50 to 80 mm. As a result, a gap of about 40 mm to 80 mm remains between two frames fastened by means of the fastening device. When wind attacks the surface of the photovoltaic modules, a Venturi effect is generated by the wind flowing across the gap. As a result, a negative pressure forms between the roof and the photovoltaic modules, which counteracts the photovoltaic modules being lifted off in the event of wind attack. The proposed fastening device enables photovoltaic modules to be securely fastened to a roof, in particular a roof made of trapezoidal sheet metal, in a simple and cost-effective manner. This configuration also contributes to the fact that additional hold-down elements for forcing the frame against the fastening plate can be dispensed with.

According to a further embodiment of the invention, the fastening plate has an end section which extends from one of the insertion sections in a direction pointing away from the intermediate section and in which a second opening is provided for passing through a second fastening means. This further increases the strength of the connection between the mounting plate and the roof.

Advantageously, the end portion extends from the first male portion. This simplifies the installation of the photovoltaic modules when the second support base is arranged inclined with respect to the fastening plate.

According to a further advantageous embodiment, the fastening plate is divided in the area of the intermediate section, with a first partial intermediate section having a first overlapping section with a first overlapping section opening and a second partial intermediate section having a second overlapping section corresponding to the first overlapping section with a second overlapping section opening. and wherein the overlapping sections are superimposable such that the first and second overlapping section apertures complement each other to form the first aperture. Advantageously, the first and the second overlapping section can be releasably connected to one another by means of a dovetail connection provided thereon. It can also be the case that the first and the second partial intermediate section are connected to one another via a predetermined breaking point. If the fastening device is made of plastic, this can be a film bridge or the like, for example. This makes it possible to inject the fastening device in one shot, for example by means of injection molding, or to extrude it using a single tool.

When connected to one another, the first and second partial intermediate sections complement each other on an underside of the fastening plate facing away from the insertion sections to form a substantially flat surface.

Because of the proposed division of the fastening plate or the predetermined breaking point, it is optionally possible to separate the fastening device into two partial fastening devices or two parts, one of which has the first insertion section and the other has the second insertion section. In particular in the area of an edge of a field formed from photovoltaic modules, only a partial fastening device is required. This can be created quickly and easily by separating the predetermined breaking point or loosening the dovetail connection. The proposed fastening device is therefore particularly universal and can be produced easily and inexpensively.

The fastening device is preferably made of stainless steel, aluminum or plastic. The fastening device can be manufactured either from sheet metal preformed by laser cutting and subsequent edging, by extrusion or by injection moulding.

To compensate for unevenness in the area of the roof surface, a layer made of an elastomer is expediently glued to an underside of the fastening plate facing away from the insertion sections. Such a layer can be made of EPEDM, for example.

• 1 eine perspektivische Ansicht einer ersten Befestigungsvorrichtung,
• 2 eine perspektivische Ansicht einer zweiten Befestigungsvorrichtung,
• 3 eine perspektivische Ansicht der zweiten Befestigungsvorrichtung in geteiltem Zustand,
• 4 eine schematische Schnittansicht durch die zweite Befestigungsvorrichtung bei der Montage eines Photovoltaikmoduls,
• 5 eine schematische Schnittansicht gemäß 4, wobei das Photovoltaikmodul montiert ist,
• 6 eine schematische Schnittansicht durch die zweite Befestigungsvorrichtung im geteilten Zustand mit daran befestigten Photovoltaikmodulen,
• 7 eine perspektivische Ansicht einer dritten Befestigungsvorrichtung,
• 8 eine perspektivische Ansicht einer vierten Befestigungsvorrichtung,
• 9 eine perspektivische Ansicht der vierten Befestigungsvorrichtung im geteilten Zustand,
• 10 eine perspektivische Ansicht der vierten Befestigungsvorrichtung gemäß 8 mit eingesetzten Befestigungsmitteln,
• 11 eine perspektivische Ansicht gemäß 9 mit eingesetzten Befestigungsmitteln,
• 12 eine perspektivische Ansicht einer fünften Befestigungsvorrichtung,
• 13 eine perspektivische Ansicht der fünften Befestigungsvorrichtung im geteilten Zustand,
• 14 eine perspektivische Ansicht gemäß 13 mit eingesetzten Befestigungsmitteln und
• 15 eine perspektivische Ansicht gemäß 12 mit eingesetzten Befestigungsmitteln.

Exemplary embodiments of the invention are explained in more detail below with reference to the drawings. Show it:

• 1 a perspective view of a first fastening device,
• 2 a perspective view of a second fastening device,
• 3 a perspective view of the second fastening device in a split state,
• 4 a schematic sectional view through the second fastening device during the assembly of a photovoltaic module,
• 5 a schematic sectional view according to FIG 4 , wherein the photovoltaic module is mounted,
• 6 a schematic sectional view through the second fastening device in the split state with photovoltaic modules fastened to it,
• 7 a perspective view of a third fastening device,
• 8th a perspective view of a fourth fastening device,
• 9 a perspective view of the fourth fastening device in the split state,
• 10 a perspective view of the fourth fastening device according to FIG 8th with fasteners used,
• 11 a perspective view according to FIG 9 with fasteners used,
• 12 a perspective view of a fifth fastening device,
• 13 a perspective view of the fifth fastening device in the split state,
• 14 a perspective view according to FIG 13 with fasteners used and
• 15 a perspective view according to FIG 12 with fasteners used.

1 shows a perspective view of a first fastening device. The first fastening device comprises a mounting plate 1, on which a first insertion portion 2 and a in opposite arrangement second insertion section 3 are provided. In an intermediate section 4 of the fastening plate 1 formed between the first 2 and the second insertion section 3, a first opening 5 is provided for the passage of a fastening means, for example a screw. An end section of the fastening plate 1 provided with the reference number 6 extends from the first insertion section 2. A second opening 7 is provided in the end section 6 for the passage of a further fastening means, for example a screw.

The first insertion section 2 comprises a first support base 10 which is supported against the fastening plate 1 by means of two first support walls 11a, 11b. A first L-shaped leg 8 extends from the first support base 10 and forms a first insertion slot 9 with the first support base 10 .

The first supporting walls 11a, 11b, the first supporting base 10 and a section of the fastening plate 1 form a first hollow profile which is approximately rectangular in cross section and which serves as a spacer in relation to the fastening plate 1. The first support base 10 is arranged at a height H above an upper side of the mounting plate 1 . The height H is expediently 10 to 20 mm. The first support walls 11a, 11b run approximately parallel to the course of the first insertion slot 9.

The second insertion section 3 is formed from a second L-shaped leg 12 which extends from the mounting plate 1 . The second L-shaped leg 12 forms a second insertion slot 13 with the fastening plate 1.

the 2 and 3 show a second fastening device which is configured similarly to the first fastening device. However, the second fastening device is designed to be divisible in the intermediate section 4 . A first part T1 of the fastening device comprises the first insertion section 2 and a first intermediate section 4a extending therefrom. The first partial intermediate section 4a has a first overlapping section 14a, in which a first overlapping section opening 15a and a first profile P1 are formed. A second part T2 comprises the second insertion section 3 and a second intermediate section 14b extending therefrom with a second overlapping section 14b provided thereon. A second overlapping section opening 15b is provided in the second overlapping section 14b. The second partial intermediate section 4b has a second profile P2 which can be connected to the first profile P1. In the connected state, the first overlapping section 14a and the second overlapping section 14b overlap in such a way that the overlapping section openings 15a, 15b are aligned and thus enable a fastener to be passed through.

The function of the fastening device is exemplified by the second fastening device with reference to FIG 4 until 6 explained in more detail.

In the 4 until 6 reference M1 denotes a first photovoltaic module and reference M2 denotes a second photovoltaic module. The first photovoltaic module M1 has a first frame R1 with a first peripheral side wall 16a, from which a first leg 17a extends towards an interior of the first frame R1. The first leg 17a is provided on an underside of the first photovoltaic module M1, which is opposite an upper side having photovoltaic elements. Similarly, a second frame R2 of the second photovoltaic module M2 has a second peripheral side wall 16b with a second leg 17b extending therefrom.

To assemble the photovoltaic modules M1, M2, the second leg 17b of the second photovoltaic module M2 is first inserted into the second insertion section 3 and then the fastening device, here by way of example the second fastening device, by means of a first 19a and a second screw 19b on a sheet made of trapezoidal sheet metal, for example , roof (not shown here) attached. Then the first leg 17a of the first photovoltaic module M1 is inserted into the first insertion section 2 . For this purpose, the first photovoltaic module M1 is held approximately horizontally and shifted in the direction of the end section 6 (see FIG 4 ).

In order to fasten a further leg (not shown here) of the first photovoltaic module M1 in a further second fastening device (not shown here), the first photovoltaic module M1 is pivoted in the direction of the roof skin. As a result, the first leg 17a is fixed in the first insertion section 2 in a clamping manner. The further leg (not shown here) of the first photovoltaic module M1 can be fixed in a further second fastening device (not shown here) analogously to the second leg 17b of the second photovoltaic module M2.

6 12 shows the fixing of a first M1 and a second photovoltaic module M2 when they form the opposite edges of a solar field formed by a plurality of photovoltaic modules. In this case, the second attachment shown here as an example device by releasing the dovetail joint into the first part T1 and the second part T2 (see 3 ) to be shared. The first part T1 is then used to attach the first photovoltaic module M1. The second part T2 is used to attach the second photovoltaic module M2.

Like in particular 6 As can be seen, the first support base 10 can be inclined relative to the fastening plate 1 by an angle α, which is preferably 2° to 10°, in particular 3°. An improved clamping effect can thus be achieved.

Using the in the 2 until 6 shown second fastening device, a variety of photovoltaic modules M1, M2 can be fastened one behind the other quickly and easily. The photovoltaic modules M1, M2 are slightly tilted relative to the roof. A tilt angle β of the photovoltaic modules M1, M2 (see 6 ) is, for example, 1° to 3°, preferably 1.2° to 1.4°. Because of the provision of the spacer, here formed from a hollow profile, between the first support base 10 and the fastening plate 1, the photovoltaic modules M1, M2 are fixed at a distance from the roof skin. This improves their rear ventilation and thus their efficiency.

the 7 shows a third fastening device, which - similar to the first fastening device - is made of one piece. In contrast to the first fastening device, the first plug-in section 2 is configured similarly to the second plug-in section 3 here. The first insertion section 2 has second support walls 11c, 11d, with which a second support base 20 is held at a predetermined height above the mounting plate 1. The predetermined height corresponds approximately to the height H at which the first support base 10 is held above the mounting plate 1 . - With the third fastening device, photovoltaic modules M1, M2 can be fixed essentially parallel to a base, in particular a flat roof.

Advantageously, in this configuration too, the first support base 10 is inclined at an angle α with respect to the fastening plate 1 . In contrast, the second support base 20 can run parallel to the fastening plate 1 . However, it can also—similar to the first support base 10—be inclined by the angle α, so that it is also inclined towards the first opening 5 .

In the fastening devices according to the invention, a distance A between the first 9 and the second insertion slot 13 is e.g. B. 50 to 80 mm. As a result, a slot remains between the photovoltaic modules M1, M2 fastened by means of a fastening device according to the invention, which in 5 is marked with the reference symbol S. Another slot width of the slot S is expediently 30 to 80 mm, preferably 40 to 60 mm. By providing the slot S, a venturi effect and thus a negative pressure gap between the photovoltaic modules M1, M2 and the roof skin is generated in a wind attack in an area between the roof skin and the photovoltaic modules M1, M2, which counteracts lifting forces caused by wind attack.

the 8th until 11 show a perspective view of a fourth fastening device. The fourth attachment device is configured similarly to the third attachment device. In contrast to the third fastening device, the fourth fastening device is again designed in two parts. It consists of a first part T1 and a part T2, which are connected to one another in the area of the intermediate section 4 by means of a dovetail joint. It is so far on the description of the 2 and 3 referred. In the fourth fastening device, too, the first 10 and/or the second support base 20 can be inclined by the angle α with respect to the fastening plate 1 .

the 10 and 11 show perspective views of a use of a fourth fastening device in one piece ( 10 ) or in two parts T1, T2.

Although it is not shown in the figures, it is possible that an elastic layer is glued to an underside of the fastening plate 1 opposite the insertion sections 2, 3, which elastic layer can be made of EPEDM, for example.

Instead of the dovetail connection shown here as an example, the first part T1 and the second part T2 can also be connected to one another in a different way. For example, a predetermined breaking point can be provided in the intermediate section 4 . It is also conceivable for the first part T1 and the second part T2 to be connected to one another by means of an elastic layer provided on the underside of the fastening plate 1 . By separating the elastic layer using a cutter, it is possible to separate the two parts T1, T2.

The proposed fastening device can be produced, for example, by means of an extrusion process. It can be extruded from plastic or aluminum. Of course, it is also possible to use the proposed fastening device by injection molding, in particular plastic to produce. A UV-resistant plastic is advantageously used in this respect.

At least one rib-like projection (not shown here) can be provided on the inside of the L-shaped legs 8, 12 opposite the fastening plate 1 or the support base 10, 20, through which the frictional connection to the respective frame leg 17a, 17b is improved during assembly can.

the 12 until 15 show a fifth fastening device. In the fifth fastening device, the first insertion section 2 is formed from two opposing first support walls 11a, 11b, each of which has a first insertion slot 9a, 9b. The first support walls 11a, 11b comprise first L-shaped legs 8a, 8b which form the first insertion slots 9a, 9b. Similarly, the second male portion is formed of two second support walls 11c, 11d which are opposed to each other. The second support walls 11c, 11d have second L-shaped legs 12a, 12b which form second insertion slots 13a, 13b.

The first 2 and second insertion sections 3 are designed in the manner of a U-shaped profile which is interrupted by the intermediate section 4 of the fastening plate 1 . The fastening plate 1 is divided in the fifth fastening device. A first overlapping portion 14a and a second overlapping portion 14b are formed. Like in particular 12 As can be seen, when the first 14a and the second overlapping section 14b overlap properly, the fastening plate 1 has an essentially flat underside.

The reference number 21 designates stops which extend laterally from the first overlapping section 14a. During assembly, these facilitate alignment of the first overlapping section opening 15a with the second overlapping opening 15b.

The first support base 11a, 11b and/or the second support base 20a, 20b can be inclined by the angle α, similar to the configurations described above.

Reference List

1

mounting plate

2

first insertion section

3

second insertion section

4

intermediate section

4a

first part intermediate section

4b

second part intermediate section

5

first breakthrough

6

end section

7

second breakthrough

8, 8a, 8b

first L-shaped leg

9, 9a, 9b

first slot

10, 10a, 10b

first support floor

11a, 11b

first retaining wall

11c, 11d

second retaining wall

12, 12a, 12b

second L-shaped leg

13, 13a, 13b

second slot

14a

first overlap section

14b

second overlap section

15a

first overlap section breakthrough

15b

second overlap section breakthrough

16a

first side wall

16b

second side wall

17a

first leg

17b

second leg

18

photovoltaic element

19a

first screw

19b

second screw

20, 20a, 20b

second support floor

21

attack

A

Distance

H

Height

M1

first photovoltaic module

M2

second photovoltaic module

P1

first profile

p2

second profile

R1

first frame

R2

second frame

S

slot

T1

first part

T2

second part

a

angle

β

tilt angle

Claims (15)

Fastening device for fastening photovoltaic modules (M1, M2), each photovoltaic module (M1, M2) having a frame (R1, R2) with a peripheral side wall (16a, 16b), one of which is held in the frame (R1, R2). Photovoltaic elements (18) facing away from the underside of the frame legs (17a, 17b) extending towards the inside of the frame, the fastening device comprising a fastening plate (1) on which hook-like insertion sections (2, 3) with insertion slots (9, 9a, 9b , 13, 13a, 13b) are provided, in each of which a frame leg (17a, 17b) of a photovoltaic module (M1, M2) can be inserted, and wherein in the fastening plate (1) in a between the two insertion sections (2, 3) formed Intermediate section (4) a first opening (5) for carrying out a fastener (19a) is provided, characterized in that between at least one of the plug-in sections (2, 3) and the Fastening plate (1) a spacer (11a, 11b, 11c, 11d) is provided, a first spacer (11a, 11b) being formed from two first support walls (11a, 11b) extending from the fastening plate (1), in which respectively a first insertion slot (9, 9a, 9b) with a first support base (10, 10a, 10b) is provided, the first support base (10, 10a, 10b) being at an angle of 160° to 180° with the fastening plate (1), preferably 165° to 175°, wherein a second spacer (11c, 11d) is formed from two second support walls (11c, 11d) extending from the fastening plate (1), in each of which a second insertion slot (13, 13a, 13b ) is provided with a second support base (20, 20a, 20b) and wherein the second support base (20, 20a, 20b) is arranged substantially parallel to the mounting plate (1). fastening device claim 1 , wherein the spacer (11a, 11b, 11c, 11d) has a height (H) of at least 5 mm, preferably at least 8 mm. Fastening device according to one of the preceding claims, in which the spacer (11a, 11b, 11c, 11d) has at least one supporting wall (11a, 11b, 11c, 11d). Fastening device according to one of the preceding claims, wherein a spacer (11a, 11b, 11c, 11d) is provided between each of the insertion sections (2, 3) and the fastening plate (1). Fastening device according to one of the preceding claims, wherein a first spacer (11a, 11b) is formed from a first hollow profile extending from the fastening plate (1) and having a first support base (10, 10a, 10b) arranged opposite the fastening plate (1), and the first insertion section (2) being formed from a first L-shaped leg (8, 8a, 8b) extending from the first support base (10, 10a, 10b). Fastening device according to one of the preceding claims, wherein a second spacer (11c, 11d) is formed from a second hollow profile extending from the fastening plate (1) and having a second support base (20, 20a, 20b) arranged opposite the fastening plate (1), and the second insertion section (3) being formed from a second L-shaped leg (12, 12a, 12b) extending from the second support base (20, 20a, 20b). Fastening device according to one of the preceding claims, wherein the second hollow profile has a rectangular cross section. Fastening device according to one of the preceding claims, wherein a distance (A) between the insertion slots (9, 9a, 9b, 13, 13a, 13b) is at least 40 mm. Fastening device according to one of the preceding claims, wherein the fastening plate (1) has an end section (6) which points away from one of the insertion sections (2, 3) in a direction away from the intermediate section (4) and in which a second opening (7) for passing through a second fastening means (19b) is provided. Fastening device according to one of the preceding claims, in which the end portion (6) extends from the first male portion (2). Fastening device according to one of the preceding claims, wherein the fastening plate (1) is divided in the area of the intermediate section (4), a first partial intermediate section (4a) having a first overlapping section (14a) with a first overlapping section opening (15a) and a second Partial intermediate section (4b) with a second overlapping section (14b) corresponding to the first overlapping section (14a) with a second overlapping section- Opening (15b), and wherein the overlapping sections (14a, 14b) can be placed one on top of the other that the first (15a) and the second overlapping section opening (15b) complement each other to form the first opening (5). Fastening device according to one of the preceding claims, in which the first (14a) and the second overlapping section (14b) can be releasably connected to one another by means of a dovetail connection provided thereon. Fastening device according to one of the preceding claims, wherein the first (4a) and the second partial intermediate section (4b) are connected to one another via a predetermined breaking point. Fastening device according to one of the preceding claims, made of stainless steel, aluminum or plastic. Fastening device according to one of the preceding claims, wherein a layer made of an elastomer is glued to an underside of the fastening plate (1) remote from the insertion sections (2, 3).

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