DE202010007234U1 - Mounting for PV modules on trapezoidal sheets - Google Patents

Abstract

Fastening an edge (2) of a PV module (1) to a trapezoidal rib (4) of a trapezoidal sheet (3), with a base element (5) attached to the rib (4), the base element (5) having two opposite holding legs ( 7a / b) and a support section (6), and the holding legs (7a / b) and the support section (6) are integrally connected to one another, and the holding legs (7a / b) in a region (9a / b) downwards diverge and there are attached to the inclined sides (8a / b) of the rib (4), and in the support section (6) an elongated opening (12) with an opening edge (11) is included, and the opening (12) over the The top (13) of the rib (4) is arranged and directed parallel to the rib (4), and on the back of the opening (12) and above the top (13) of the rib (4) there is an assembly space (10), and with a clamping device (14, 15, 16) which engages behind the opening edge (11) and ends in the assembly space (10) and the edge (2) on a ...

Description

The invention relates to an attachment of an edge of a PV module to a trapezoidal rib of a trapezoidal sheet.

Out DE 20 2008 007 838 U1 is an oblique arrangement of PV modules on a trapezoidal sheet known. The oblique arrangement comprises a plurality of base elements for placement on the ribs of the trapezoidal sheet. Each of the base members includes four retaining legs for attachment to the inclined sides of the ribs and a portion for laying and securing a mounting rail or its support. The oblique arrangement also has two material-intensive mounting rails against which the PV modules are clamped. In addition, the oblique arrangement is useful only for a mounting in which the clamped edges of the PV module are directed parallel to the ribs.

The object of the invention is to provide for a mounted on a trapezoidal sheet PV module rail-free attachment, in which the clamped edges of the PV module can extend transversely to the ribs of the trapezoidal sheet. The attachment should be material-saving, production-friendly, easy to assemble and stable.

The object is achieved with the specified in claim 1 attachment of an edge of a PV module to a trapezoidal rib of a trapezoidal sheet. The attachment comprises a base element attached to the rib, wherein the base element has two opposite holding legs and a support section. It is also characteristic that the holding legs diverge in an area downwards and are fastened there to the oblique sides of the rib. In addition, the holding legs and the support portion are integrally connected to each other, so that the base member may preferably be made in one piece and / or substantially as sheet metal or extruded part.

In the support portion, an elongated opening is included with an opening edge. This opening is preferably designed as a slot or undercut groove. It is essential that the opening is arranged over, preferably centrally above the top of the rib and directed parallel to the rib, wherein the rear side of the opening and above the top of the rib, a mounting space is provided. This can be provided in an undercut groove of the support section. Preferably, mounting space is bounded laterally by the retaining legs.

The fixture further includes a clamping device which engages behind the opening edge of the opening and terminates in the mounting space and clamps the edge against the support portion at one of several possible positions along the opening. It is particularly characteristic here that the edge of the PV module is directed transversely to the rib and thus transversely to the opening. Preferably, the edge even crosses the opening.

The attachment according to the invention requires no conventional mounting rails and provides for a mounting method in which the clamped edges of a PV module are directed transversely to the ribs, a very material-efficient, because only selective mounting solution. In addition, the attachment for various rib shapes customizable to manufacture and can be easily mounted on the rib with a few simple steps.

In addition, the attachment of the base member to the oblique sides of the rib at static dynamic tensile loads is statically particularly favorable. In addition, the top of the rib can remain penetration-free, since the clamping device ends outside the rib or in the mounting space above.

The clamping device can be designed in a known manner. It is essential that this is displaceable during assembly along the opening. As a result, mounting tolerances when attaching the base member to the rib and / or dimensional tolerances in the format of the PV module can be compensated in a simple manner.

The base member has parallel to the opening in the support portion preferably has a length between 5 and 15 cm, the opening may be useful just as long or only slightly shorter. The width of the base member depends mainly on the trapezoidal cross section of the rib.

In an advantageous embodiment, it is provided that the holding limbs converge over the region in which they diverge downwards in a further, upper region, lead parallel to one another and / or diverge less than in the other and thus lower region. By means of this measure, the support surface of the support portion may be designed appropriately larger than when the holding leg diverge constantly. In particular, by means of an X-like configuration of the lower and upper region, the support surface can project beyond the upper side of the rib and possibly even its oblique sides on both sides and therefore be particularly wide.

In a further advantageous embodiment, a spacing means is provided, which specifies the distance of the support section to the upper side of the rib. This spacing means can simplify assembly and is preferably on the support section and / or integrally provided or fixed to the retaining legs.

The support section is preferably designed plane-parallel to the upper side of the rib. However, it is also possible that the support section is arranged obliquely along or transversely to the rib. As a result, a PV module with respect to the trapezoidal sheet can be easily positioned at an angle and the energy yield can be increased if necessary.

The attachment is suitable for both framed and unframed PV modules. Accordingly, it is possible that the edge is a segment of a module frame and rests directly on the support section and thus clamped directly against the support section Unframed PV modules, however, it may be appropriate to hang the otherwise unprotected edge on a separate element or with a to include such. Such a separate element may rest on the support portion and be in a known manner a part of the clamping device, in particular an elastic protective pad and / or a rigid support for it.

In a particularly preferred embodiment, the clamping device comprises a holding body for holding down and laterally fixing the edge, a screw passing through the holding body and an anchor element cooperating with the screw. The anchor element has two oppositely outwardly directed snap hooks which protrude through the opening in the mounting space and engage behind the opening edge. The anchoring element may preferably have an internal thread, which is in threaded engagement with the screw above the opening, wherein the screw blocking a release or compression of the snap hook blocked. Such a clamping device allows a particularly quick and easy installation, as can be dispensed with a separate arrangement of internal thread means the back of the opening.

In a further advantageous embodiment, a second edge of an adjacent PV module directed transversely to the rib is provided, wherein both edges are clamped by means of the same clamping device against the support section of the same base element. The clamping device may for this purpose comprise a so-called middle clamp in a known manner. In contrast, if only one edge is to terminals, such as in particular on the edge of a PV module array, the clamping device preferably comprises a so-called end clamp instead of a middle clamp.

The invention also relates to an arrangement of a rectangular PV module on two or more trapezoidal ribs by means of four or more fasteners of the type described above. It is characteristic that the first edge and a second edge parallel thereto are respectively secured by two or more of the fasteners , In a further development of such an arrangement, at least one further rectangular PV module is arranged by means of further fastenings of the type described above, wherein adjacent edges of the PV modules are fastened by means of the same fasteners which have a holding body for adjacent edges for this purpose. In any case, it is preferred if the edges directed transversely to the ribs are the longer edges of the respective PV module, ie the PV modules are oriented transversely to the ribs.

The invention will be explained in more detail with reference to an embodiment. It shows.

1 a perspective of attachment and detail D1 according to 5

2 an exploded view of the attachment according to 1

3 a sectional view of the attachment according to 1 from the right (section BB in 4 )

4 a sectional view of the attachment according to 1 from the front (section AA in 3 )

5 a perspective of an arrangement of two PV modules on a Trapezblechblechfläche

6 a sectional view of the detail D2 according to 5 from the right

7 a side view like 6 from another attachment

1 to 4 show an inventive attachment of an edge 2 a framed PV module 1 on a trapezoidal rib 4 a trapezoidal sheet 3 , The edge 2 of the PV module 1 is to be recognized as the segment of a frame, with the inner layers 44 of the PV module 1 are framed. The attachment is as detail D1 in the arrangement according to 5 contain.

The attachment comprises a base element 5 that at the rib 4 is appropriate. The basic element 5 has two opposite holding legs 7a / b and a rest section 6 on, which are integrally connected to each other. It is further advantageous that the base element 5 one piece and essentially designed as sheet metal forming part and also has a mirror-symmetrical basic shape.

As can be seen, the retaining legs diverge 7a / b down in a lower, im Essentially next to the sloping sides 8a / b of the rib 4 arranged area 9a / B. The holding thighs 7a / b diverge there about the same extent as the oblique sides 8a / b and are therefore approximately parallel to the oblique sides 8a / b addressed. In addition, the holding legs 7a / b in the lower area 9a / b on the sloping sides 8a / b of the rib 4 by means of several screws 42 attached, the thread is not shown in detail. The screws 42 penetrate both the holding leg 7a / b at the bottom 9a / b and the oblique sides of the rib 4 , Conveniently, the screws 42 self-tapping so that only in the retaining legs 7a / b holes that are not closer in advance are to be set in advance. It can also be seen that between the retaining legs 7a / b and the sloping sides 8a / b each have a thin, elastic sealing element 43 interposed, that is the ingress of rainwater into the rib 4 prevents and also the surface of the oblique sides 8a / b protects against scratches and the like.

In the edition section 6 is an elongated opening designed as a slot 12 included, by a hintergreifbaren opening edge 11 is limited. The support section 6 and the opening 12 are directly and centrally above the top 13 the rib 4 arranged. Also, acknowledge that the elongated opening 12 parallel to the rib 4 is directed. Back of the opening 12 and over the top 13 is a mounting room 10 provided by the holding leg 7a / b is laterally limited. For this purpose, the holding leg 7a / b another, upper area 17a / b on top of the lower area 9a / b is provided. In this upper area 17a / b lead the holding thighs 7a / b parallel to each other. Consequently, the cross section of the base member 5 Comparable with a U-shape, the U-legs are flared at the free ends to the outside obliquely.

To when fixing the base element 5 to ensure that a given distance between the support section 6 and the top 13 the rib 4 is maintained, is a distance means 21 provided as an assembly aid. This spacer 21 is designed as a four-legged plastic part and not shown in detail on the underside of the support section 6 attached. If the retaining leg 7a / b by means of the screws 42 on the sloping sides 8a / b are fixed, the spacer means is no longer required per se. However, it can remain at the installation site. Alternatively, a simple block with the appropriate height can be placed.

The attachment according to 1 to 4 also contains a clamping device. This comprises a designed as a so-called end clamp holding body 15 for holding down and lateral fixing of the edge 2 , one through the holding body 15 leading screw 14 and one with the screw 14 cooperating anchor element 16 , The anchor element 16 has two opposite outward snap hooks 22a / b on that the opening edge 11 the elongated opening 12 engage behind. It can also be seen that the anchor element 16 a conventional nut as internal thread 24 Contains that with the screw 14 in threaded engagement with the thread of the screw 14 not shown in detail. Essential to the clamping device is that the screw 14 a release or compression of the snap hooks 22a / b blocked in installed state. As in particular from 4 it can be seen, the screw ends 14 and the anchor element 16 in the mounting room 10 so the top 13 the rib 4 can remain penetrating.

Particularly characteristic of the attachment is that the edge 2 of the PV module 1 transverse to the rib or to the elongated opening 12 is directed. The edge 2 lies directly on the support section 6 of the base element 5 on. The edge 2 is by means of the clamping device at a middle of several possible positions along the opening 12 against the support section 6 clamped. This allows a fitter inaccuracies in attaching the base member 5 and / or tolerances in the format of the PV module 1 compensate in a simple way later.

5 illustrates an arrangement of two framed PV modules 1 . 28 on a trapezoidal sheet surface 3 with several trapezoidal ribs. The trapezoidal sheet surface 3 can be composed of several individual trapezoidal sheets and in particular be the inclined roof skin of a roof, the ribs are directed in this case expedient parallel to the drainage direction down.

As you can see, the PV modules point 1 . 28 a rectangular format, with the longer edges 2 . 25 . 26 . 27 the PV modules are arranged transversely to the ribs. For a roof installation, the longer edges are 2 . 25 . 26 . 27 consequently preferably oriented approximately horizontally.

The PV module 1 is by means of four fixtures 36 . 37 . 38 . 39 on the ribs 4 . 35 arranged, with the edge 2 by means of the fasteners 36 . 39 and the parallel opposite edge 25 by means of fastening 37 . 38 is attached. The attachment 36 or the detail D1 is similar to the one in 1 shown and described above attachment. The fortifications 36 and 39 are identical. The fortifications 37 and 38 are also identical to each other and from the illustration according to 6 , which corresponds to the detail D2, closer.

The PV module 28 is on its edge 27 by means of two further attachments 40 . 41 on the ribs 4 . 35 attached. The fortifications 40 . 41 same to the fortifications 36 . 39 of the PV module 1 , but are arranged in reverse. It is essential that the edge 27 parallel opposite edge 26 of the PV module 28 and the adjacent edge 25 of the adjacent PV module 1 by means of the same fixings 37 . 38 are attached.

Out 6 is the detail D2 according to 5 or the attachment 37 closer. The attachment is similar to the attachment according to 1 to 4 executed, in particular is basic element 5 ' identical. Also the clamping device 14 ' . 31 . 16 ' includes a screw in the same way 14 ' and an anchor element 16 ' , The main difference is in the holding body 31 , which serves as a so-called middle terminal for clamping the two adjacent PV modules 1 . 28 is carried out on two sides. Furthermore, it can be seen that both edges 25 and 26 by means of the same clamping device 14 ' . 31 . 16 ' against the support section 6 ' are clamped, both edges 25 and 26 directly on the support section 6 ' rest.

Finally shows 7 an arrangement of two unframed PV modules 46 . 47 by means of a fastening according to the invention. The difference to the fixture according to 6 lies in the fact that the edges 49 . 50 on elastic edge protection elements 51 . 48 be covered by these on three sides. The two edge protection elements 51 . 48 are also on a common rigid support 52 arranged. Both the carrier 52 as well as the edge protection elements 50 . 51 are in this embodiment part of the clamping device whose screw 53 , Holding body 54 and anchor element 55 are functionally identical to the previous embodiment. It is essential that the edges 49 . 50 against or to the support section 6 '' of the base element 5 '' are clamped.

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

• DE 202008007838 U1 [0002]

Claims (16)

Fixing an edge ( 2 ) of a PV module ( 1 ) on a trapezoidal rib ( 4 ) of a trapezoidal sheet ( 3 ), with one on the rib ( 4 ) attached base element ( 5 ), wherein the base element ( 5 ) two opposing retaining legs ( 7a / b) and a support section ( 6 ), and the retaining legs ( 7a / b) and the overlay section ( 6 ) are integrally connected to each other, and the retaining legs ( 7a / b) in an area ( 9a / b) diverge downwards and there on the sloping sides ( 8a / b) the rib ( 4 ) are fixed, and in the support section ( 6 ) an elongated opening ( 12 ) with an opening edge ( 11 ), and the opening ( 12 ) above the top ( 13 ) of the rib ( 4 ) and parallel to the rib ( 4 ), and the back of the opening ( 12 ) and above the top ( 13 ) of the rib ( 4 ) a mounting space ( 10 ) is provided, and with a clamping device ( 14 . 15 . 16 ), which the opening edge ( 11 ) and in the mounting space ( 10 ) ends and the edge ( 2 ) at one of several possible positions along the opening ( 12 ) against the support section ( 6 ), whereby the edge ( 2 ) of the PV module ( 1 ) across the rib ( 4 ). Attachment according to claim 1, characterized in that the retaining legs ( 7a / b) over the area ( 9a / b), in which they diverge downwards, in a further, upper area ( 17a / b) converge downwards, lead parallel to one another and / or diverge less than in the other region ( 9a / B). Attachment according to one of the preceding claims, characterized in that the retaining legs ( 7a / b) the mounting space ( 10 ) laterally limit. Fastening according to one of the preceding claims, characterized in that a spacing means ( 21 ) is provided which the distance of the support section ( 6 ) to the top ( 13 ) of the rib ( 4 ) pretends. Attachment according to the preceding claim, characterized in that the spacing means ( 21 ) on the support section ( 6 ) and / or on the retaining legs ( 7a / b) is integrally provided or fixed there. Attachment according to one of the preceding claims, characterized in that the support section ( 6 ) plane parallel to the top ( 13 ) of the rib ( 4 ) or is arranged obliquely. Attachment according to one of the preceding claims, characterized in that the edge ( 2 ) the opening ( 12 ) crosses. Attachment according to one of the preceding claims, characterized in that the edge ( 2 ) directly on the support section ( 6 ) or one on the support section ( 6 ) arranged element ( 51 . 48 . 52 ) to protect the edge ( 2 ) rests. Attachment according to one of the preceding claims, characterized in that the clamping device ( 14 . 15 . 16 ) a holding body ( 15 ) to hold down and lateral edge ( 2 ), one through the holding body ( 15 ) leading screw ( 14 ) and one with the screw ( 14 ) cooperating anchor element ( 16 . 24 ), wherein the anchor element has two oppositely outwardly directed snap hooks ( 22a / b) having the opening edge ( 11 ) of the opening ( 12 ) behind. Attachment according to the preceding claim, characterized in that the anchor element ( 16 ) an internal thread ( 24 ), which with the screw ( 14 ) above the opening ( 12 ) is in threaded engagement with the screw ( 14 ) a release of the snap hooks ( 22a / b) blocked according to the installation. Fastening according to one of the preceding claims, characterized in that one to the rib ( 4 ) transversely directed, second edge ( 26 ) of an adjacent PV module ( 28 ), and both edges ( 25 . 26 ) by means of the same clamping device ( 14 ' . 31 . 16 ' ) against the support section ( 6 ' ) of the same basic element ( 5 ' ) are clamped. Attachment according to one of the preceding claims, characterized in that the base element ( 5 ) is essentially a sheet metal or extruded part and / or has a mirror-symmetrical basic shape and / or is made in one piece. Base element and / or clamping device for a fastening according to one of the preceding claims. Arrangement of a rectangular PV module ( 1 ) on two or more trapezoidal ribs ( 4 . 35 ) by means of four or more fixings ( 36 . 37 . 38 . 39 ) according to one of claims 1 to 12, characterized in that the first edge ( 2 ) and a parallel, second edge ( 25 ) of the PV module ( 1 ) each by means of two or more of the fasteners ( 36 . 37 . 38 . 39 ) are attached. Arrangement according to the preceding claim, characterized in that at least one further rectangular PV module ( 28 ) by means of further fixings ( 40 . 41 ) is arranged according to one of claims 1 to 12, wherein adjacent edges ( 25 . 26 ) of the PV modules ( 1 . 28 ) by means of the same Fortifications ( 37 . 38 ) are attached according to claim 11. Arrangement according to claim 14 or 15, characterized in that the transversely to the ribs ( 4 . 35 ) directed edges ( 2 . 25 . 26 . 27 ) the longer edges of the rectangular PV module ( 1 . 28 ) are.

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