DE102014208303A1 - Fixing device for fixing photovoltaic modules - Google Patents

Abstract

The invention relates to a fastening device for fastening photovoltaic modules (M1, M2), wherein each photovoltaic module (M1, M2) has a frame (R1, R2) with a circumferential side wall (16a, 16b), from which in the frame (R1 , R2) held photovoltaic elements (18) facing away from the bottom frame frame towards a frame (17a, 17b) erstcken, wherein the fastening device comprises a mounting plate (1) on which hook-like insertion portions (2, 3) with insertion slots (9 , 9a, 9b, 13, 13a, 13b) are provided, in which in each case a frame leg (17a, 17b) of a photovoltaic module (M1, M2) can be inserted, and wherein in the mounting plate (1) in one between the two insertion portions (2 , 3) formed intermediate portion (4) is provided a first opening (5) for performing a fastening means (19a). To simplify the assembly, it is proposed according to the invention that a spacer (11a, 11b, 11c, 11d) is provided between at least one of the insertion sections (2, 3) and the attachment plate (1).

Description

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

Such a fastening device is known from WO 2012/014203 A2 known. The known fastening device comprises a plurality of parts, namely a mounting plate on which hook-like insertion portions are provided in opposing arrangement. The insertion sections each have a slot for inserting a frame leg of a photovoltaic module. In the attachment plate, a first opening for passing through a fastening means, for example a screw, is provided in an intermediate section formed between the two insertion sections.

The known fastening device is disadvantageous in several respects. The frame legs of photovoltaic modules offered on the market differ in their thickness. In order to universally attach a variety of photovoltaic modules from different manufacturers by means of the fastening device, a slot width of the insertion slots must be greater than a maximum thickness of the frame legs offered on the market photovoltaic modules. This in turn means that when mounting photovoltaic modules with frame legs of a relatively small thickness they are not held firmly in the Einsteckabschnitten. In this case, it is necessary to force the frames of the photovoltaic modules accommodated in the fixing device against the fixing plate by means of an additional hold-down device. The provision of an additional hold-down is complex and makes installation difficult.

Sometimes, for example, made of trapezoidal sheets, roof surface is not completely flat. Ie. attached fasteners may be slightly tilted against each other. This can complicate the assembly or disassembly of the photovoltaic modules.

In particular, when mounting the photovoltaic modules on a roof made of sheet metal, the photovoltaic modules sometimes heat up strongly, whereby the performance of the photovoltaic modules decreases significantly.

The object of the invention is to eliminate the disadvantages of the prior art. In particular, an easily producible and mountable fastening device is to be specified, which is suitable universally for the attachment of photovoltaic modules with different thickness configured frame legs. According to a further object of the invention, a reduction in the power of the photovoltaic modules with increasing temperature to be counteracted.

This object is solved by the features of claim 1. Advantageous embodiments of the invention will become apparent from the features of claims 2 to 19.

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

By providing a spacer between the plug-in portion and the mounting plate, it is possible for a mounting device already mounted on, for example, a trapezoidal sheet to grasp the plug-in portion elevated relative to the mounting plate about the spacer and to bend it to a suitable mounting position to facilitate assembly. The provision of a spacer between the mounting plate and at least one of the male sections also contributes to improved ventilation of the photovoltaic modules. It can thus be counteracted by a decrease in power with increasing temperature.

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 substantially in a form-fitting manner on a flat base. The mounting plate can be configured one or more parts. In the case of a multi-part design, the plurality of mounting plate parts, in particular exactly two mounting plate parts, can be connected during mounting by means of a connecting device substantially form-fitting manner to the mounting plate. The connection can be advantageously carried out by mounting elements, in particular screws, which are used for fastening the mounting plate or the mounting plate parts on the pad.

According to an advantageous embodiment, the spacer has a height of at least 5 mm, preferably at least 8 mm. Conveniently, the spacer has a height in the range of 10 to 25 mm. The proposed height facilitates installation and allows adequate ventilation. At the same time, however, the proposed height is sufficiently small to keep lifting forces low in a wind attack.

The spacer may be configured differently. Conveniently, the spacer comprises at least one parallel or perpendicular to the course of the insertion slot extending support wall.

According to a further advantageous embodiment of the invention, a spacer is provided between each of the male portions and the mounting plate.

A first spacer may be formed from a first hollow profile extending from the mounting plate with a first support base disposed opposite the mounting plate, the first plug portion being formed from a first L-shaped leg extending from the first support bottom. Similarly, a second spacer may be formed from a second hollow profile extending from the mounting plate with a second support bottom disposed opposite the mounting plate, the second plug portion being formed from a second L-shaped leg extending from the second support bottom.

According to a further advantageous embodiment, the second hollow profile is rectangular in cross section. The second support floor is arranged substantially parallel to the mounting plate.

According to an alternative embodiment of the invention, a first spacer of two extending from the mounting plate first support walls is formed, in each of which a first insertion slot is provided with a first support bottom. In an analogous manner, a second spacer may be formed of two extending from the mounting plate second support walls, in each of which a second insertion slot is provided with a second support bottom. The proposed embodiment can be produced in a particularly simple manner by first producing a metal sheet with a suitable shape by means of laser cutting and subsequently forming the first and / or second supporting walls by means of edges. The fastening device is in this case formed in sections in the manner of a U-profile, wherein the legs of the U-profile are formed by the first and / or second support walls. The openings of the first and / or second insertion slots each have to the opposite insertion portion. The first and / or second support floor is formed narrow in this embodiment. Its width corresponds to a thickness of the sheet used.

The first support floor forms according to a further particularly advantageous embodiment with the mounting plate an angle of 160 ° to 180 °, preferably 165 ° to 175 °, wherein the first support base is advantageously inclined to the first opening. In this case, when mounting a photovoltaic module z. B. the first L-shaped leg and / or the frame legs are elastically deformed. The restoring force generated by the elastic deformation causes a frictional grip of the photovoltaic module in the fastening device. Such a frictional grip is ensured even if a thickness of the frame leg is smaller than a slot width of the insertion slots. The proposed fastening device is universally suitable for fastening photovoltaic modules with frame legs of different thickness. In departure from the prior art can be dispensed with the provision of a separate hold-down for forcing the frame against the mounting plate.

According to a further advantageous embodiment, a distance between the insertion slots, d. H. between their perpendicular to the mounting plate opening planes, at least 40 mm. He is expediently 50 to 80 mm. As a result, a gap of about 40 mm to 80 mm remains between two frames fastened by the fastening device. In a wind attack on the surface of the photovoltaic modules, a Venturi effect is generated by the wind flowing through the gap. As a result, forms between the roof and the photovoltaic modules, a negative pressure, which counteracts a lifting of the photovoltaic modules in a wind attack. The proposed fastening device enables in a simple and cost-effective manner secure attachment of photovoltaic modules on a roof, in particular a roof made of trapezoidal sheets. This embodiment also contributes to be able to dispense with additional hold-down elements for forcing the frame against the mounting plate.

According to a further embodiment of the invention, the mounting plate has a from one of the male portions in a direction away from the intermediate portion end portion, in which a second opening for performing a second fastening means is provided. This further increases the strength of the connection between the mounting plate and the roof.

Advantageously, the end section extends from the first insertion section. This facilitates the mounting of the photovoltaic modules in a relative to the mounting plate inclined second support floor.

According to a further advantageous embodiment, the fastening plate is divided in the region of the intermediate section, wherein a first partial intermediate section has a first overlapping section with a first overlapping section opening and a second partial intermediate section a second overlap portion having a second overlap portion breakthrough corresponding to the first overlap portion, and wherein the overlap portions are overlayable so that the first and second overlap portion breakthroughs complement the first breakthrough. Advantageously, the first and second overlapping sections are releasably connectable to one another by means of a dovetail connection provided thereon. It may also be that the first and the second partial intermediate section are connected to one another via a predetermined breaking point. In the case of a production of the fastening device made of plastic, it may, for example, a film bridge or the like. Act. This makes it possible to inject the fastening device, for example by injection molding in a single shot or to extrude using a single tool.

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

Because of the proposed division of the mounting 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 the second insertion section. In particular, in the region of an edge of a field formed of photovoltaic modules, only a partial fastening device is needed. This can be made quickly and easily by separating the predetermined breaking point or releasing the dovetail joint. The proposed fastening device is thus particularly universal and can be produced easily and inexpensively.

Preferably, the fastening device is made of stainless steel, aluminum or plastic. The fastening device can be produced either from sheets pre-formed by laser cutting and subsequent edges, by extrusion or by injection molding.

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

Embodiments of the invention will be explained in more detail 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 assembly of a photovoltaic module,

5 a schematic sectional view according to 4 , wherein the photovoltaic module is mounted,

6 a schematic sectional view through the second fastening device in the split state with attached photovoltaic modules,

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 8th with inserted fasteners,

11 a perspective view according to 9 with inserted fasteners,

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 13 with inserted fasteners and

15 a perspective view according to 12 with inserted fasteners.

1 shows a perspective view of a first fastening device. The first fastening device comprises a fastening plate 1 on the opposite side of a first insertion section 2 and a second insertion portion 3 are provided. In one between the first 2 and the second insertion portion 3 formed intermediate section 4 the mounting plate 1 is a first breakthrough 5 for performing a fastening means, such as a screw provided. From the first insertion section 2 extends with the reference numeral 6 provided end portion of the mounting plate 1 , In the end section 6 is a second breakthrough 7 for performing a further fastening means, for example a screw provided.

The first insertion section 2 includes a first support floor 10 , which by means of two first supporting walls 11a . 11b against the mounting plate 1 is supported. From the first support floor 10 extends a first L-shaped leg 8th , which with the first support floor 10 a first insertion slot 9 forms.

The first supporting walls 11a . 11b , the first support floor 10 and a portion of the mounting plate 1 form a cross section approximately rectangular first hollow profile, which as a spacer relative to the mounting plate 1 serves. The first support floor 10 is at a height H above an upper surface of the mounting plate 1 arranged. The height H is suitably 10 to 20 mm. The first supporting walls 11a . 11b , Run approximately parallel to the course of the first insertion slot 9 ,

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

The 2 and 3 show a second fastening device, which is designed similar to the first fastening device. However, the second fastening device is in the intermediate section 4 divisible trained. A first part T1 of the fastening device comprises the first insertion portion 2 and a first part intermediate section extending therefrom 4a , The first part intermediate section 4a has a first overlap section 14a in which a first overlap section breakthrough 15a and a first profile P1 are formed. A second part T2 comprises the second insertion section 3 and a second partial intermediate section extending therefrom 14b with a second overlapping section provided thereon 14b , In the second overlapping section 14b is a second overlap section breakthrough 15b intended. The second part 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 overlap 14a and the second overlap section 14b such that the overlap section breakthroughs 15a . 15b aligned and thus allow the implementation of a fastener.

The function of the fastening device will be described by way of example with reference to the second fastening device with reference to the 4 to 6 explained in more detail.

In the 4 to 6 the reference symbol M1 denotes a first photovoltaic module and the reference symbol M2 denotes a second photovoltaic module. The first photovoltaic module M1 has a first frame R1 with a first circumferential side wall 16a from, to a inside of the first frame R1 through a first leg 17a extends. The first leg 17a is provided on an underside of the first photovoltaic module M1, which faces a photovoltaic elements having top side. Similarly, a second frame R2 of the second photovoltaic module M2 has a second circumferential sidewall 16b with a second leg extending therefrom 17b on.

For mounting the photovoltaic modules M1, M2 is first the second leg 17b of the second photovoltaic module M2 in the second insertion portion 3 inserted and then the fastening device, here exemplarily the second fastening device, by means of a first 19a and a second screw 19b on a, for example made of trapezoidal sheets, roof (not shown here) attached. Subsequently, the first leg 17a of the first photovoltaic module M1 in the first insertion portion 2 plugged in. For this purpose, the first photovoltaic module M1 is held approximately horizontally and in the direction of the end portion 6 moved (see 4 ).

For fixing a (not shown here) further leg 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 becomes 17a clamped in the first insertion section 2 attached. The further leg (not shown here) of the first photovoltaic module M1 can be analogous to the second leg 17b of the second photovoltaic module M2 in a further second fastening device (not shown here) are fixed.

6 shows the attachment of a first M1 and a second photovoltaic module M2, when they form the opposite edges of a solar field formed from a plurality of photovoltaic modules. In this case, the second fastening device shown here by way of example can be obtained by releasing the dovetail joint into the first part T1 and the second part T2 (see FIG 3 ) to be shared. The first part T1 then serves to fasten the first photovoltaic module M1. The second part T2 serves to fix the second photovoltaic module M2.

As in particular from 6 it can be seen, the first support floor 10 with respect to the mounting plate 1 by an angle α, which is preferably 2 ° to 10 °, in particular 3 °, be inclined. Thus, an improved clamping effect can be achieved.

Using the in the 2 to 6 shown second fastening device, a plurality of photovoltaic modules M1, M2 can be attached 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 formed here from a hollow profile between the first support floor 10 and the mounting plate 1 is achieved that the photovoltaic modules M1, M2 are fixed with a distance to the roof skin. This improves their ventilation and thus their efficiency.

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

Advantageously, also in this embodiment, the first support floor 10 with respect to the mounting plate 1 inclined at an angle α. The second support floor 20 can, however, parallel to the mounting plate 1 run. But he can also - similar to the first support floor 10 - be inclined by the angle α, so that he also for the first breakthrough 5 is inclined.

In the fastening devices according to the invention, a distance A is between the first 9 and the second insertion slot 13 z. B. 50 to 80 mm. As a result, remains between the attached by means of a fastening device according to the invention photovoltaic modules M1, M2, a slot which in 5 marked with the reference symbol S. A further slot width of the slot S is expediently 30 to 80 mm, preferably 40 to 60 mm. By providing the slit S, in a wind attack in a region between the roof cladding and the photovoltaic modules M1, M2, a Venturi effect and thus a negative pressure gap is created between the photovoltaic modules M1, M2 and the roof skin, which counteracts lift-off forces caused by wind attack.

The 8th to 11 show perspective view of a fourth fastening device. The fourth fastening device is configured similarly to the third fastening 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 in the region of the intermediate section 4 are connected to each other by means of a dovetail connection. It is in this respect to the description of the 2 and 3 directed. Also in the fourth fastening device, the first 10 and / or the second support floor 20 by the angle α with respect to the mounting plate 1 be tilted.

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 not shown in the figures, it may be that at one of the male portions 2 . 3 opposite underside of the mounting plate 1 an elastic layer is glued, which may for example be made of EPEDM.

Instead of the dovetail connection shown here by way of example, the first T1 and the second part T2 may also be connected to one another differently. For example, in the intermediate section 4 a predetermined breaking point may be provided. It is also conceivable for the first T1 and the second part T2 by means of a at the bottom of the mounting plate 1 provided elastic layer to connect together. By separating the elastic layer by means of a cutter, it is possible to separate the two parts T1, T2.

The proposed fastening device can be produced for example by means of extrusion processes. It can be extruded from plastic or aluminum. Of course, it is also possible to produce the proposed fastening device by injection molding, in particular of plastic. Advantageously, insofar as a UV-resistant plastic is used.

On one of the mounting plate 1 or the support floor 10 . 20 opposite inner side of the L-shaped legs 8th . 12 can be provided at least one (not shown here) rib-like projection through which during assembly the frictional connection to the respective frame legs 17a . 17b can be improved.

The 12 to 15 show a fifth fastening device. In the fifth attachment device, the first insertion portion 2 from two opposing first support walls 11a . 11b formed, each having a first insertion slot 9a . 9b exhibit. The first supporting walls 11a . 11b include first L-shaped legs 8a . 8b which are the first insertion slots 9a . 9b form. Similarly, the second male portion is made up of two second support walls 11c . 11d formed, which are arranged opposite to each other. The second supporting walls 11c . 11d have second L-shaped legs 12a . 12b on which second insertion slots 13a . 13b form.

The first 2 and second insertion portions 3 are configured in the manner of a U-shaped profile, which through the intermediate section 4 the mounting plate 1 is interrupted. The mounting plate 1 is formed divided in the fifth fastening device. It is a first overlap section 14a and a second overlapping section 14b educated. As in particular from 12 it can be seen has the mounting plate 1 with proper overlap of the first 14a and the second overlapping section 14b a substantially flat bottom.

With the reference number 21 are called attacks, which laterally from the first overlap section 14a extend. These facilitate during assembly an aligned alignment of the first overlap portion breakthrough 15a with the second overlap breakthrough 15b ,

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

LIST OF REFERENCE NUMBERS

1

 mounting plate

2

 first insertion section

3

 second plug-in section

4

 intermediate section

4a

 first part intermediate section

4b

 second part intermediate section

5

 first breakthrough

6

 end

7

 second breakthrough

8, 8a, 8b

 first L-shaped leg

9, 9a, 9b

 first slot

10, 10a, 10b

 first support floor

11a, 11b

 first supporting wall

11c, 11d

 second supporting 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 sidewall

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

α

 angle

β

 tilt angle

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2012/014203 A2 [0002]

Claims (19)

Fixing device for fixing photovoltaic modules (M1, M2), each photovoltaic module (M1, M2) having a frame (R1, R2) with a circumferential side wall ( 16a . 16b ), from which on a in the frame (R1, R2) held photovoltaic elements ( 18 ) facing away from the bottom side toward a frame interior frame legs ( 17a . 17b ), wherein the fastening device is a mounting plate ( 1 ), on the opposing arrangement hook-like insertion sections ( 2 . 3 ) with insertion slots ( 9 . 9a . 9b . 13 . 13a . 13b ), in each of which a frame leg ( 17a . 17b ) of a photovoltaic module (M1, M2) can be inserted, and wherein in the mounting plate ( 1 ) in one between the two plug-in sections ( 2 . 3 ) intermediate section ( 4 ) a first breakthrough ( 5 ) for performing a fastener ( 19a ), characterized in that between at least one of the insertion sections ( 2 . 3 ) and the mounting plate ( 1 ) a spacer ( 11a . 11b . 11c . 11d ) is provided. Fastening device according to 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, wherein the spacer ( 11a . 11b . 11c . 11d ) at least one parallel or perpendicular to the course of the insertion slot ( 9 . 9a . 9b . 13 . 13a . 13b ) extending retaining wall ( 11a . 11b . 11c . 11d ). Fastening device according to one of the preceding claims, wherein between each of the insertion portions ( 2 . 3 ) and the mounting plate ( 1 ) a spacer ( 11a . 11b . 11c . 11d ) is provided. Fastening device according to one of the preceding claims, wherein a first spacer ( 11a . 11b ) from one of the mounting plate ( 1 ) extending first hollow profile with one opposite the mounting plate ( 1 ) arranged first support floor ( 10 . 10a . 10b ) is formed, and wherein the first insertion portion ( 2 ) from one of the first support floor ( 10 . 10a . 10b ) extending first L-shaped leg ( 8th . 8a . 8b ) is formed. Fastening device according to one of the preceding claims, wherein a second spacer ( 11c . 11d ) from one of the mounting plate ( 1 ) extending second hollow profile with an opposite of the mounting plate ( 1 ) arranged second support floor ( 20 . 20a . 20b ) is formed, and wherein the second insertion portion ( 3 ) from one of the second support floor ( 20 . 20a . 20b ) extending second L-shaped leg ( 12 . 12a . 12b ) is formed. Fastening device according to one of the preceding claims, wherein the second hollow profile is rectangular in cross-section. Fastening device according to one of claims 1 to 4, wherein a first spacer ( 11a . 11b ) of two from the mounting plate ( 1 ) extending first support walls ( 11a . 11b ) is formed, in each of which a first insertion slot ( 9 . 9a . 9b ) with a first support floor ( 10 . 10a . 10b ) is provided. Fastening device according to claim 8, wherein a second spacer ( 11c . 11d ) of two from the mounting plate ( 1 ) extending second support walls ( 11c . 11d ) is formed, in each of which a second insertion slot ( 13 . 13a . 13b ) with a second support floor ( 20 . 20a . 20b ) is provided. Fastening device according to one of the preceding claims, wherein the first support floor ( 10 . 10a . 10b ) with the mounting plate ( 1 ) forms an angle of 160 ° to 180 °, preferably 165 ° to 175 °. Fastening device according to one of the preceding claims, wherein the second support floor ( 20 . 20a . 20b ) substantially parallel to the mounting plate ( 1 ) is arranged. 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 mounting plate ( 1 ) extends from one of the male sections ( 2 . 3 ) in one of the intermediate section ( 4 ) pointing away towards the end portion ( 6 ), in which a second breakthrough ( 7 ) for performing a second fastening means ( 19b ) is provided. Fastening device according to one of the preceding claims, wherein the end portion ( 6 ) from the first insertion section ( 2 ). Fastening device according to one of the preceding claims, wherein the mounting plate ( 1 ) in the area of the intermediate section ( 4 ), a first partial intermediate section ( 4a ) a first overlapping section ( 14a ) with a first overlap section breakthrough ( 15a ) and a second partial intermediate section ( 4b ) with a to the first overlapping section ( 14a ) corresponding second overlapping section ( 14b ) with a second overlap section breakthrough ( 15b ), and wherein the overlapping sections ( 14a . 14b ) are superimposed so that the first ( 15a ) and the second overlap section breakthrough ( 15b ) to the first breakthrough ( 5 ) complete. Fastening device according to one of the preceding claims, wherein the first ( 14a ) and the second overlapping section ( 14b ) are detachably connectable to each other 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 interconnected 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 at one of the insertion portions ( 2 . 3 ) facing away from underside of the mounting plate ( 1 ) a layer made of an elastomer is adhered.

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