DE102011113289B4 - Hybrid holding system for mounting a photovoltaic module on a substructure - Google Patents

Abstract

A rail-like retention system (10) for mounting a framed or frameless PV module (11) on a substructure (15), comprising: at least one plug (12); and a base profile (14) extending substantially in a longitudinal direction (X) of the support system (10) and comprising: at least one support leg (20) adapted to mount the PV module (11) in the assembled state wear; a support leg (22) opposite the support leg (20) and adapted to be placed on the substructure (15); at least one support leg (24) connecting the support leg (20) with the support leg (22) such that the support leg (20) and the support leg (22) are at a distance (H4) from each other; and a receiving channel (29); said receiving channel (29) having a first side wall (26-1) and a second side wall (26-2) interconnected by a bottom leg (28) which forms an angle (alpha) with each of said side walls (26) ; wherein the receiving channel (29) is adapted to receive the plug (12) frictionally and / or positively and rainwater in the longitudinal direction (X) dissipate, characterized in that the bottom leg (28) serving as a stop nose-shaped projection (30) extending in the longitudinal direction (X) and having a constant height (H1) relative to the bottom, the plug (12) having a clamping leg (18) and a fixing leg (16), the clamping leg (18) being adapted frictionally and / or positively into the receiving channel (29) to be inserted and wherein the fixing leg (16) is configured to protect the PV module (11) in the assembled state before, by wind or other forces from the holding system (10) to be lifted, and wherein a height (H2) of the clamping leg (18) is selected so that the fixing leg (16) rests either flat on the mounted PV module (11) or at a predetermined distance (H3) to the mounted PV module (11) extends.

Description

The present invention relates to a holding system for mounting a framed or frameless photovoltaic module (hereinafter also referred to as "PV module") on a substructure, such. B. a carrier system or directly a (flat) roof. The holding system can also be used on (house) facades. The holding system is a hybrid because different technologies or materials are combined.

The German utility model DE 20 2009 010 512 U1 shows a rail-like holding system for mounting a framed or frameless PV module on a substructure, the holding system comprising: at least one plug; and a base profile extending substantially in a longitudinal direction of the support system and comprising: at least one support leg configured to support the PV module in the assembled state; a support leg, which is opposite to the support leg and which is adapted to be placed on the substructure; at least one support leg connecting the support leg with the support leg such that the support leg and the support leg are at a distance from each other; and a receiving channel, the receiving channel having a first sidewall and a second sidewall joined together by a bottom leg that forms an angle with each of the sidewalls; wherein the receiving channel is adapted to receive the plug frictionally and / or positively and dissipate rainwater in the longitudinal direction.

Solar mounting systems usually consist of a variety of profiles, which are usually made only of steel or aluminum. These profiles form the basis of a secure fastening system for PV modules. Previously known profiles are flexible in application and have a high quality and stability. There are a variety of profile geometries and a variety of mounting options. There are u. a. Insertion systems, clamping system, flat roof systems and outdoor systems, just to name a few examples. All these systems have the metallic profiles or profile rails in common. Metallic profile rails meet the high requirements for fire protection, stability and safety of the mounted PV modules.

A disadvantage of metallic profiles or rails is the high weight, which z. B. important in the case of flat roof applications. The production costs are high.

It is therefore an object of the present invention to provide a holding system which is simpler and cheaper to produce and usable in many different applications.

This object is achieved by a rail-like holding system of the type mentioned, wherein the bottom leg has a stopper serving as a nose-shaped projection which extends in the longitudinal direction of the system and relative to the ground has a constant height, wherein the plug a clamping leg and a, preferably Is oriented perpendicular thereto, fixing leg, wherein the clamping leg is adapted to be frictionally and / or positively inserted into the receiving channel and wherein the fixing leg is configured to protect the PV module in the assembled state before, by wind or other forces from the Holding system to be lifted, with a height of the clamping leg is selected so that the fixing leg either rests flat on the PV module or extends at a predetermined distance, preferably parallel to the assembled PV module.

By this measure, it is possible to use the holding system of the invention as an insertion system or as a clamping system.

The retention system of the invention may be used as an insertion system or as a clamping system. It is built like a box. Installation on site is easy and does not even require tools. The assembly is screwless.

The plug (s) are preferably made of plastic, which lowers production costs.

Due to the lateral discharge of rainwater, no water collects on the PV modules, which could lead to green roofs. If water remains on the roof because it is not drained off by itself, this water combined with dust, dirt and grime is an ideal breeding ground for plants that can grow there as green roofs.

The holding system is safe to install. In particular, when used as an insertion system is ensured by the nose on the bottom of the receiving channel that the fitter mounted on the construction site, the plug always in the correct (installation) height relative to the supporting leg.

It is ensured that the plug is not inserted too deeply into the receiving channel. The assembly is simple because no Maßklotz for mounting the plug in the base profile is needed. The nose represents the measure block.

Preferably, the bottom leg is part of the support leg.

With this measure, the production of the receiving channel is simplified. The support leg has a double function. On the one hand serves the support leg for fixing the base profile on the substructure. On the other hand, the support leg serves as a floor for the receiving channel. In this way cavities in the base profile can be avoided, which are difficult to produce during extrusion.

The various legs can be arranged to each other so that any geometry for the receiving areas of the holding system can be configured. The receiving areas are used to hold the PV module.

In a further particular embodiment, a contact surface of the clamping leg is conical; has a variety of flexible blades; has a sawtooth profile; and / or has at least one positive locking lug, which forms a positive connection in the inserted state of the plug, each with a groove-shaped recess in an associated side wall.

The secure connection between plug and base profile is made either by a frictional connection, a positive connection or a combination of frictional and positive locking.

In addition, it is advantageous if the plug resists an extraction force corresponding to a pressure of at least 2400 Pascals.

The plug can in particular be made of plastic.

This reduces the production costs. The plug can be made in different colors. The plug does not have to be reworked as in the prior art (anodizing). The plug may have a desired elasticity or a low modulus of elasticity.

In particular, the plug has a core reinforcement. The core reinforcement gives the graft additional stability, especially during assembly by "brute force" (kicking, hammering, etc.) on the jobsite. In addition, the safety is maintained even in case of fire, because the core reinforcement continues to secure the PV modules, even if other parts may already be deformed by the heat or no longer exist. This measure extends the time available to the fire department before the fire department has to move due to falling elements.

In a further preferred embodiment, the base profile is made of a metal or a metallic alloy, preferably by means of extrusion or roll forming.

The support leg preferably has on its side facing the (frameless) PV module an EPDM strip, which can be aligned on an abutment edge of the support leg, which is formed in steps in the PV module side facing the support leg. The EPDM strip is used for electrical insulation of the support leg relative to the PV module, which rests on the supporting leg. There is no contact between the support leg itself and the PV module.

In a further advantageous embodiment, the base profile and the plug in the inserted state along an imaginary plane which extends centrally between and parallel to the side walls and which halves the base profile and the plug in the inserted state, each formed symmetrically.

By this measure, it is possible to mount several PV modules side by side with a few plugs along a support rail. Preferably, the plug is shorter in the longitudinal direction than the base profile.

This measure ensures that rainwater can be discharged laterally through the receiving channel, because the plug does not completely cover the receiving channel. The drainage of the water is possible because there is no closed "edge" as in conventional insertion systems.

It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.

Embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description. Show it:

1 a perspective view of a holding system according to the invention;

2 a cross section of an enlarged portion of 1 in a plane oriented perpendicular to the longitudinal direction X;

3 a cross section of a first connection type;

4A a cross section of a second connection type;

4B a cross section of a third connection type;

5 a cross section of an insertion system; and

6 a cross section of a clamping system.

1 shows a holding system 10 according to the invention in a perspective view.

The holding system 10 of the 1 is z. B. with two PV modules 11-1 and 11-2 equipped in a transverse direction Y of the holding system 10 , which is also referred to below as "system" 10 will be designated juxtaposed and extend substantially in the longitudinal direction X of the system 10 , It is understood that the PV modules 11 may have other geometries (such as a square) for their basic shape. The PV modules 11 can also be mounted with their long side parallel to the transverse direction Y, so that there is no restriction with regard to the orientation and the type of PV module used. The system 10 The invention is applicable to both frameless and framed PV modules 11 suitable, as described below with reference to the 5 (Insertion system) and the 6 (Clamping system) will be explained in more detail.

2 shows a sectional view taken along the line II-II of 1 , The 2 shows a cross section through the holding system 10 that has at least one stopper 12 and at least one basic profile 14 having. The illustrated cross-section is in a plane (YZ), which is oriented perpendicular to the longitudinal direction X. The stopper 12 is shown in a state in which he is in the base profile 14 (completely) is inserted. The stopper 12 and the base profile 14 can in the inserted state mirror symmetry along a plane 51 be oriented perpendicular to the plane of the drawing 2 is oriented and which is indicated by a dashed line.

The stopper 12 has a fixing leg 16 and a clamping leg 18 on. In the 2 are the fixation leg 16 and the clamping leg 18 represented separated by an auxiliary line. The fixation leg 16 and the clamping leg 18 are usually formed in one piece. The stopper 12 is preferably made of a plastic. The stopper 12 can be made by extrusion. The plastic preferably has a low modulus of elasticity to frictional and / or positive fit with the base profile 14 to be connected, as will be explained in more detail below.

The fixation leg 16 is oriented substantially horizontally in the inserted state. The clamping leg 18 is essentially vertically oriented. The fixation leg 16 and the clamping leg 18 preferably enclose an angle of 90 ° with each other. Outer edge areas of the fixation leg 16 can be rounded. An underside of the fixation leg 16 is preferably flat, whereas an upper side of the fixing leg 16 may be formed convex or convex. The top of the fixation leg 16 Of course, it can also be oriented parallel to the underside, ie preferably be flat, so that the fixing leg 16 preferably has a constant thickness.

The stopper 12 is - in the longitudinal direction X - usually shorter than the rail-like base profile 14 (see 1 ). The stopper 12 is preferred for "selective" attachment of the PV modules 11 at the base profiles 14 used. Of course, the grafting can 12 be trained much longer. The stopper 12 may have a length (in the longitudinal direction X) substantially equal to a length (in the longitudinal direction X) of the PV module 11 equivalent. Shorter grafts 12 have the advantage of rainwater, which is between the grafting 12 and the PV module (s) 11 can collect, is discharged laterally to the holding system 10 about the basic profiles 14 to leave, as will be explained in more detail below.

The basic profile 14 as exemplified in the 2 is shown has one or more support legs 20 on. In the 2 two are relative to the plane of symmetry 51 opposite support legs 20-1 and 20-2 shown. The carrying legs 20 wear on their top 36 the PV modules 11 ,

The carrying legs 20 lie a support leg 22 , preferably parallel, opposite. The support leg 22 can with his bottom 34 for example, on a (flat) roof 15 ' rest. The carrying legs 20 can have one or more support legs 24 with the support leg 22 be connected. In the 2 are two outer support legs 24-1 and 24-2 shown, each perpendicular to the support legs 20-1 and 20-2 as well as to the support leg 22 are oriented. The support legs 24-1 and 24-2 are related to the level 51 Outside. Inside are the support legs 20 with the support leg 22 over further support legs 24-3 and 24-2 connected with each other. The support legs 24-3 and 24-2 serve as sidewalls 26 that have a bottom leg 28 connected to each other. The side walls 26 and the bottom leg 28 define a receiving channel between them 29 , The bottom leg 28 can be a nose-shaped projection 30 have, in the direction of the one-sided - up here - open receiving channel 28 extends. The side walls 26-1 and 26-2 are preferably oriented parallel to each other. The bottom leg 28 closes with each of the sidewalls 26-1 and 26-2 a, preferably vertical, angle α. The nose-shaped projection 30 is again preferably perpendicular to the bottom leg 28 oriented or parallel to the side walls 26-1 and 26-2 oriented. The lead 30 extends, preferably continuously, in the longitudinal direction X, ie perpendicular to the plane of the drawing 2 , The lead 30 serves as a distance measure for the plug 12 , as will be explained in more detail below. The support legs 24-1 and 24-3 respectively. 24-2 and 24-4 are preferably oriented parallel to each other. The outer support legs 24-1 and 24-2 but can also be slightly angled and define a trapezoidal structure. The outer support legs 24-1 and 24-2 but can also be omitted altogether. The outer support legs 24-1 and 24-2 essentially have the task of supporting legs 20-1 and 20-2 support, as on the support legs 20 the weight of the PV modules 11 rests.

A height (in the Z direction) of the projection 30 is designated H1. A height of the clamping leg 18 (in the Z direction) is labeled H2. A distance between a mounted PV module 11 and the fixation leg 16 is designated H3. A distance between the bottom 34 of the support leg 22 and a top 36 the carrying leg 20 is designated H4. The height H4 corresponds to the mounting height of the PV module 11 relative to the substructure 15 respectively. 15 ' ,

The clamping leg 18 exemplifies a sawtooth profile 32 on. The receiving channel 29 then has on its insides a corresponding sawtooth profile 50 on. The sawtooth profiles 32 and 50 are sized so that between the graft 12 and the base profile 14 preferably forms a press fit in the inserted state of the plug. The formation of a press fit is favored by a plastic with a low elastic modulus. In this case, the stopper is 12 and the base profile 14 both form-fitting (contour of the saw teeth) and frictional (sawtooth profile 32 of the clamping leg 18 marginally oversized).

Other forms of frictional engagement or positive engagement will be discussed in more detail below.

The height H1 of the projection 30 is dimensioned so that the distance H3 between the PV module 11 and the bottom of the fixation leg 16 of the plug 12 automatically trains when a fitter puts the plug 12 , whose clamping legs 18 has a preconfigured height A2, which is tuned to the distance H3 to be set, in the receiving channel 29 of the basic profile 14 is inserted. The system 10 can be prefabricated box-like in this sense. Each PV module manufacturer manufactures its PV modules 11 with a different thickness (in the Z direction), so that for each PV module type a matching plug 16 can be kept. In the example of 2 is a frameless PV module 11 shown. Frameless PV modules 11 should not be clamped if possible. That's why the system is 10 as insertion system 60 trained, as well as in the 5 is shown. Mechanical and electrical loads on the frameless PV module 11 are to be avoided as far as possible. That's why the top can 36 the carrying leg 20 coated with an insulating material, pasted or the like. In the 2 is the right carrying leg 20-2 z. B. with an EPDM strip 40 stuck, the z. B. at a joint edge 42 can be aligned in the top 36 can be trained. In this case, the frameless PV module is only on the EPDM strip 40 on. A contact between the top 36 and a bottom of the PV module 11 should be avoided. On the other hand, framed PV modules 11 directly on the top 36 of the carrying leg 20 be imposed as exemplified in the left half of the 2 is shown. Other materials than EPDM can be used

The or the support legs 20 have a width B which is chosen so that the PV modules 11 safely through the base profile 14 are supported.

It is understood that in addition to the height H2 of the clamping leg 18 of the plug 12 z. B. also the height H1 of the projections 30 in the receiving channel 29 can be varied to expand the modular system. In this way, it is z. B. possible that one with the graft 12 of the 2 also a clamping system ( 6 ), as exemplified in the 6 is shown. In a clamping system ( 6 ) is the plug 12 (even) on the top of the PV module 11 on. In this case, the height H1 of the projection 30 to choose smaller than her in the 2 is shown.

An advantage of the system 10 The invention can be seen in that the base profile 14 can be produced by extrusion. The basic profile 14 is preferably made of metal (steel, aluminum, alloys or the like). The basic profile 14 is preferably prepared by extrusion, subsequent processing steps are undesirable. That in the 2 shown base profile 14 Can be easily produced by extrusion without subsequent processing.

The basic profile 14 can on his rest thigh 22 laterally, optionally upwardly projecting, L-shaped mounting portions have to the basic profile 14 to connect with a (not shown) support structure.

It is understood that the basic profile 14 even with a single support leg 20 and a receiving channel 29 can be trained. So z. B. the left support leg 20-1 or the right carrying leg 20-2 be omitted.

Referring to 3 Another possibility for producing a frictional connection between the clamping leg 18 and the side walls 26-1 and 26-2 of the receiving channel 29 shown schematically in a cross section. The clamping leg 18 has on its outer surfaces a lamellar structure 52 on, the frictionally engaged in the insertion with the side walls 26 of the canal 29 combines. In the 3 a force F is indicated by an arrow which must be applied to the clamping leg 18 in the channel 29 insert.

Basically, the frictional and / or positive locking is dimensioned so that extraction forces can be compensated, which withstand a pressure of 2400 Pascal or more. Such pull-out forces, opposite to the arrow F in the 3 are oriented, z. B. caused by wind, the over the PV modules 11 sweeps. Below the PV modules 11 can z. B. arise as a negative pressure.

In 4A is a further embodiment of the clamping leg 18 and the side walls 26 shown, with a positive connection between the clamping leg 18 and the sidewall (s) 26 will be produced. A contact surface 48 of the clamping leg 18 has a positive locking nose for this purpose 54 on, in the inserted state positively by a groove-shaped recess 56 in the corresponding sidewall 26 is recorded. In the 4A is a plug-in movement 53 clarified. The material of the clamping leg 18 is chosen so that the nose 54 during the insertion movement (in the Y direction) can be compressed to then relax to its original shape when the clamping leg 18 in the height or depth (in the Z direction) of the groove-shaped recess 56 has arrived.

It is understood that a plurality of slot-nose connections can be arranged one behind the other (ie, eg in the Z-direction). It is understood that in the 4A shown groove-nose connection on only one side or only one side wall 26 can be realized.

The nose 54 is in 4A shown by way of example with a semicircular cross-section. It is understood that other geometric contours for the shape of the nose 54 can be chosen.

Referring to 4B a further embodiment for a shape / friction in cross section is shown. The clamping leg 18 as well as the channel 29 taper each conical such that the clamping leg 18 in the inserted state in a press fit in the channel 29 sitting.

5 shows the previously mentioned insertion system 60 in a cross section. 6 shows a clamping system 64 in cross section. Both systems 60 and 64 are based on the holding system 10 ,

When inserting system 60 of the 5 become the PV modules 11 obliquely employed in a U-shaped receiving space between the Fixierschenkel 16 , the clamping leg 18 and the support leg 20 introduced. Subsequently, the PV module 11 tilted to the horizontal (Y-direction) and possibly shifted to the left or right to get into its final position.

The stopper 12 ' of the 5 it is different from grafting 12 of the 2 through a core reinforcement 62 , The core reinforcement 62 may have a T-shaped cross-section and be made for example of metal. The core reinforcement 62 can be surrounded with a plastic, the z. B. the sawtooth profile 32 having. The core reinforcement 62 has the advantage of having a fitter the plug 12 ' either with the foot or a hammer in the receiving channel 29 can drive. This is particularly advantageous because the holding system is modular and modular. The lead 30 serves as a stop to the stopper 12 respectively. 12 ' with the correct distance H3 to the corresponding PV module type position.

Rainwater can easily at the bottom of the receiving channel 29 in the longitudinal direction X flow off laterally. Here it pays off that the stopper 12 respectively. 12 ' in the longitudinal direction X usually shorter than the base profile 14 (compare also 1 ) is trained.

Rainwater puddles 66 , as exemplified in the 6 shown are not formed. When puddles 66 train, so these are so small that the PV modules 11 not mossed or otherwise overgrown.

6 shows a clamping system 64 in which the graft 12 , by the way, a stopper 12 of the 2 corresponds, with his fixation leg 16 plan on the top of the PV modules 11-1 and 11-2 rests. The bottom leg 28 is here as part of the support leg 22 of the basic profile 24 educated. The lead 30 is thus directly from the support leg 22 in front. The height H1 of the projection 30 is the thickness (in the Z direction) of the PV modules 11 Voted.

Furthermore, the left support leg 20-1 of the 6 not by an external support leg 24 supported. The carrying leg 20-1 gets alone from the second wall 26-1 supported.

In the above description of the figures, the choice of the orientations of the coordinate systems has a north-south orientation (longitudinal direction of the holding system 10 ) or an east-west orientation (transverse direction of the holding system 10 ) ajar.

Furthermore, the same parts and features have been given the same reference numerals. The disclosures contained in the description are mutatis mutandis to like parts and features with the same reference numerals transferable. Location and orientation information (eg, "top", "bottom", "side", "longitudinal", "transverse", "horizontal", "vertical" and the like) are related to the figure directly described. In the event of a change in position or orientation, however, this information must be transferred analogously to the new situation or orientation.

The holding system 10 The invention is characterized by a screwless assembly. The PV modules 11 can be both inserted and clamped. The PV modules 11 are not surrounded by metal. This has a positive effect on an electrical potential, which lies between the (frameless) PV module 11 and the holding system 10 could build up.

The holding system 10 can be used universally, in the sense of a modular system. The plugs 12 as well as the basic profiles 14 can be adapted to different module heights.

The interrupted fixation (in the longitudinal direction X) of the PV modules ensures a water outlet. A roof greening by stagnant water is excluded.

The plugs 12 can be colored in any color. The stopper 12 does not have to be anodized. This has a positive effect on the design and the manufacturing costs.

Claims (15)

Rail-type holding system ( 10 ) for mounting a framed or frameless PV module ( 11 ) on a substructure ( 15 ), comprising: at least one plug ( 12 ); and a base profile ( 14 ) substantially in a longitudinal direction (X) of the holding system ( 10 ) and comprising: at least one support leg ( 20 ), which is designed to charge the PV module ( 11 ) in the assembled state; a support leg ( 22 ), the support leg ( 20 ) and which is adapted to the substructure ( 15 ) to be placed; at least one support leg ( 24 ), the supporting leg ( 20 ) with the support leg ( 22 ) such that the support leg ( 20 ) and the support leg ( 22 ) have a distance (H4) to each other; and a receiving channel ( 29 ); wherein the receiving channel ( 29 ) a first side wall ( 26-1 ) and a second side wall ( 26-2 ), which via a bottom leg ( 28 ) connected to each of the side walls ( 26 ) includes an angle (alpha); wherein the receiving channel ( 29 ), the plug ( 12 ) receive frictionally and / or positively and rainwater in the longitudinal direction (X) dissipate, characterized in that the bottom leg ( 28 ) serving as a stop nose-shaped projection ( 30 ) which extends in the longitudinal direction (X) and has a constant height (H1) relative to the bottom, the plug being ( 12 ) a clamping leg ( 18 ) and a fixing leg ( 16 ), wherein the clamping leg ( 18 ) is frictionally and / or positively in the receiving channel ( 29 ) and the fixing leg ( 16 ), the PV module ( 11 ) in the assembled state before, by wind or other forces from the holding system ( 10 ) to be lifted, and wherein a height (H2) of the clamping leg ( 18 ) is selected so that the fixing leg ( 16 ) either flat on the assembled PV module ( 11 ) or at a specified distance (H3) to the installed PV module ( 11 ). Holding system according to claim 1, characterized in that the bottom leg ( 28 ) Part of the support leg ( 22 ). Holding system according to claim 1, characterized in that a contact surface ( 48 ) of the clamping leg ( 18 ): is conical; a variety of flexible blades ( 52 ) having; a sawtooth profile ( 50 ) having; and / or at least one positive locking nose ( 54 ), which in the inserted state of the plug ( 12 ) each having a groove-shaped recess ( 56 ) in an associated side wall ( 26 ) forms a positive connection. Holding system according to one of claims 1 to 3, characterized in that the plug ( 12 ) a pull-out force ( 58 ), which corresponds to a pressure of at least 2400 Pa. Holding system according to one of claims 1 to 4, characterized in that the plug ( 12 ) is made of plastic. Holding system according to claim 5, characterized in that the plug ( 12 ) a core reinforcement ( 60 ) having. Holding system according to one of claims 1 to 6, characterized in that the base profile ( 14 ) is made of a metal or a metallic alloy, preferably by means of extrusion or roll forming. Holding system according to one of claims 1 to 7, characterized in that the supporting leg ( 16 ) on its the PV module ( 11 ) side facing an EPDM strip ( 40 ), which at a butt edge ( 42 ) of the carrying leg ( 16 ), which is step-shaped in the PV module ( 11 ) facing side of the support leg is formed. Holding system according to one of claims 1 to 8, characterized in that the base profile ( 14 ) and the plug ( 12 ) in the inserted state along an imaginary plane ( 51 ), which are centered between and parallel to the side walls ( 26 ) and which the base profile ( 14 ) and the plug ( 12 ) Halved in the inserted state, each formed symmetrically. Holding system according to one of claims 1 to 9, characterized in that the plug ( 12 ) in the longitudinal direction (X) shorter than the base profile ( 14 ). Holding system according to claim 1, characterized in that the support leg ( 22 ) the support leg ( 20 ) is parallel opposite. Holding system according to claim 1, characterized in that the first side wall ( 26-1 ) and the second side wall ( 26-2 ) are oriented parallel to each other. Holding system according to claim 1, characterized in that the bottom leg ( 28 ) with each of the side walls ( 26 ) includes a right angle (alpha). Holding system according to claim 1, characterized in that the clamping leg ( 18 ) perpendicular to the fixing leg ( 16 ) is oriented. Holding system according to claim 1, characterized in that the fixing leg ( 16 ) at the predetermined distance parallel to the assembled PV module ( 11 ).

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