AT512283A4 - SOLAR MOUNTING SYSTEM - Google Patents

Abstract

The invention relates to a mounting system (1) for fastening building structures, in particular photovoltaic modules, comprising at least one connecting means (2) and at least one mounting rail (20) with a longitudinal recess (21) into which the connecting means (2) is engageable. The connecting means (2) has a divided structure with a dividing groove (6) in its longitudinal axis direction (8). Furthermore, a method for fastening roof structures with a mounting system according to the invention is specified.

Description

1

1 Μ 15622 "Solar mounting system"

The invention relates to a mounting system for fastening of building structures, in particular photovoltaic modules, comprising at least one connecting means and at least one mounting rail with a longitudinal recess into which the connecting means is engageable. Furthermore, a method for fastening roof structures with a mounting system according to the invention is specified.

From the prior art, different mounting systems comprising mounting rails with longitudinal recesses are known.

For example, mounting rails are known in which T-shaped sliding blocks, which are provided for example with a through hole with an internal thread for receiving a fastening screw, can be inserted into the longitudinal recesses of the mounting rails. The disadvantage here is that the T-shaped nuts can be inserted only on the front sides of the profiled mounting rails and thus both the exact number required for a later mounting task nuts must be known before mounting, as well as the front sides of the mounting rails still freely accessible must be for inserting the nuts. Depending on the mounting situation, a subsequent insertion of further sliding blocks in the longitudinal recess of the mounting rail is either not possible at best, or at best only with increased additional effort to accomplish.

Furthermore, sliding blocks are known, which are both end side, as well as directly inserted into the longitudinal recesses of the mounting rails. For this purpose, the sliding blocks are designed, for example, in the form of a half-cylinder, sodas s they can be introduced in length by lateral pivoting in the longitudinal recesses of the mounting rails and in the inserted state by turning or tilting about their longitudinal axis direction by a tilt angle of about 90 ° within the Longitudinal recess in their position in the mounting rail can be fixed.

In addition, embodiments of sliding blocks are known in which the approximately cuboid nuts are in the longitudinal recess of a mounting rail inserted in its longitudinal axis direction and are fixieibar by lateral rotation perpendicular to the longitudinal axis direction within the mounting rail. 2 Μ 15622

A disadvantage of these sliding blocks is that they can be fastened in their position within the mounting rail only by fixing by means of an additional fastening screw. When loosening the interference fit between the sliding block and the mounting rail, for example, due to vibration on the mounting rail such sliding blocks can slip both in their position within the longitudinal recess in the longitudinal direction, as well as fall out of the mounting rail completely. Building structures that are attached to such sliding blocks can therefore be insufficiently secured against slipping or even falling from a building, which is a major disadvantage of such known from the prior art fastening systems.

Another disadvantage occurs during the installation of such nuts in the mounting rail. As long as the sliding blocks are not fixed by means of a fastening screw by applying a press fit or by wedging or jamming within the longitudinal recess of the mounting rail in position, the sliding blocks can slip or even fall out of the mounting rail. The assembly of building structures on such sliding blocks is therefore time and labor intensive.

It is therefore the object of the present invention to provide a mounting system for fastening building structures, in particular of photovoltaic modules, which avoids the described disadvantages of the prior art.

This object is achieved in a mounting system according to the preamble of claim 1 with the features of the characterizing part of claim 1. The subclaims relate to further advantageous embodiments of the invention.

Advantageously, in a mounting system according to the invention for fastening building structures, in particular of photovoltaic modules comprising at least one connecting means and at least one mounting rail with a longitudinal recess into which the connecting means is engageable, the connecting means on a split structure with a dividing groove in its longitudinal axis direction.

The connecting means according to the invention, which have a divided structure with a dividing groove in its longitudinal axis direction, are therefore particularly easy to insert in longitudinal recesses of mounting rails.

Particularly expedient in a mounting system according to the invention, the dividing groove is arranged substantially centrally on an underside of the binding means. by virtue of

3 M15622 the dividing groove, the connecting means can be compressed at its bottom and thus advantageously reduced in width.

The connecting means is preferably introduced with its underside in the longitudinal recess of a mounting rail, wherein the two separated by a dividing groove connecting means on the underside of the connecting means are compressible. Thus, a width of the connecting means can be reduced and the connecting means can be inserted into the longitudinal recess of the mounting rail.

Advantageously shares in a mounting system according to the invention, the dividing groove, the connecting means in two connecting means halves, which are connected to one another at the bottom opposite head portion by a connecting web. The two connecting means halves, which are spaced from each other by the intermediate dividing groove starting from the bottom, are initially rigidly connected to each other by the connecting web at its head portion. This initially rigid connection of the two binding means halves makes it possible to carry out particularly advantageous further processing steps or processing steps on the connecting means as a solid component.

Appropriately, in a mounting system according to the invention, the connecting web in the region of the dividing groove on a weakening. Due to the weakening of the connecting web in the region of the dividing groove, breaking up of the two connecting medium halves is advantageously made possible.

As a weakening, for example, a notch in the connecting web is provided.

It is advantageous in a mounting system according to the invention, a connection clamping part, which is fastened to the head portion of the connecting means near the connecting web, arranged. Such a connection clamping part serves on the one hand the captive cohesion of the two connecting means halves after the breaking of the connecting web and at the same time forms a Veibindungsgelenk the two Veibindungsmittelhälften particularly advantageous. On the other hand, the design of the connection clamping part makes it possible, for example, to attach attachments or clamp supports to the connection means. Different variants of connection clamping parts are included in the invention. For example, an O-ring or sealing ring can also serve as a connection clamping part.

4 4

ιβμββμβΙ ^ Μ Μ 15622

In a further embodiment for solving the problem according to the invention, in a mounting system the connecting clamping part has a passage opening for receiving a fastening screw. Thus, a fastening screw can be screwed through the connection clamping part in the Veibindungsmittel. By a small undersize of the passage opening of the connection clamping part, a fastening screw can be pre-assembled and held captive by the connection clamping part. Advantageously, the fastening screw comes after further screwing with the connecting means halves into engagement, so that the connecting means halves for insertion into the longitudinal recess of a mounting rail are still compressible. Only after inserting the Veibindungsmittels in the longitudinal recess of the mounting rail, the two connecting means halves are spread against the channel walls of the longitudinal recess of the mounting rail by further screwing a fastening screw.

Advantageously, in a mounting system according to the invention by lateral compression of the two connecting means halves on the longitudinal side surfaces of a connecting means width can be reduced by a pitch width. Depending on the shape or design of the binding means according to the invention, the width of the connecting means can be reduced by the entire pitch width. In this compressed position, the two connecting means halves collide on their wall sections on both sides of the dividing groove. Thus, the advantageous minimum possible connecting means width is achieved.

In a development of the invention, a width of the connecting means which is reduced by the dividing groove width during the lateral compression is at most a clear width of the longitudinal recess of the mounting rail. In this case, the connecting means is just used in the longitudinal recess of the mounting rail. Thus, the most compact possible embodiment of a mounting system according to the invention is achieved.

In the context of the invention it is thus possible to select and use Veibindungsmittel, which are wider in their original dimension than the inside width of the longitudinal recess of the mounting rail. Only by the lateral compression of the two connecting means halves to the dividing groove width, the connecting means width is reduced so that it corresponds at most to the clear width of the longitudinal recess and the Veibindungsmittel is thus inserted into the mounting rail. 5

Μ 15622

Suitably, in a mounting system according to the invention on the longitudinal side surfaces of the Veibindungsmittels fastening projections are arranged, which are preferably aligned in the longitudinal axis direction. With the fastening projections on the longitudinal side surfaces of the connecting means, this can be brought into engagement with recesses of the mounting rail. Thus, a possible load or holding load, with which a Veibindungsmittel is loaded, advantageously increased and improves the fit of the connecting means in the inserted position in the mounting rail.

In a further expedient embodiment of the mounting system, the connecting means has at least one through-bore, which opens at the bottom. One or more through holes are provided for example for receiving a fastening screw. Depending on the requirement or depending on the selection of the material used for the connecting means, the at least one through-hole can be provided, for example, with an internal thread. Furthermore, it is possible to provide through holes with a small undersize. Thus, the respective screws to be screwed therein can be clamped or preassembled in the through holes. Advantageously, the fastening screws can therefore be captively positioned in the through holes and particularly easy to be screwed in place during installation in place for fixing the position of the connecting means in the through hole.

In a further development, in a mounting system, at least one through-hole is arranged in a plane of the dividing groove. A fastening screw, which is screwed into the through hole, is thus advantageously guided in the plane of the dividing groove and presses apart the two connecting medium halves along the dividing groove. Thus, a single fixing screw for fixing acts on both connecting means halves, which represents a further advantage of the invention.

Advantageously, in a mounting system according to the invention, the longitudinal side surfaces of the connecting means laterally outwardly pressed by a fastening screw is screwed into the through hole. For this purpose, the fastening screw has a larger nominal diameter than corresponds to the groove width of the dividing groove. Therefore, the two connecting means halves are pushed apart by the fastening screw.

Appropriately, in a mounting system according to the invention comprising a cross-connector to this cross-connector at least two connecting means are fixed, each in longitudinal recesses of mounting rails in wmmmmm

mmmm 6 M 15622

Intervention can be brought. The at least two connecting means are provided for this purpose on different outer surfaces and / or in different angular positions to each other at the cross connector. The base surfaces of the connecting means in each case form attachment surfaces in which the mounting rails can be connected to the cross-connection piece. Advantageously, at least one binding means is rotatably or pivotably mounted in its longitudinal direction within the respective connection surface. Thus, at least two mounting rails at any angle to each other by a cross connector are particularly flexible connected. In a preferred embodiment variant, the attachment surfaces of the at least two connection means are arranged at right angles to each other at the cross connection piece, whereby two mounting rails can be fastened to each other substantially at right angles to one another.

The present invention also achieves the stated object by a method for fastening roof structures, in particular photovoltaic modules, with a mounting system according to the invention, comprising the following method steps: a) fastening mounting rails to a building surface, for example a facade or a roof surface; If necessary, attaching a connection clamping part to a head portion of a connection means, wherein a through hole of the connection clamping part is to be arranged concentrically with a through hole of the connection means; -c- Breaking up the two connecting means halves and reducing the

Connecting means width of the connecting means by compressing its two longitudinal side surfaces to the dividing groove width at the bottom until the reduced connecting means width corresponds at most to the clear width of the longitudinal recess of a mounting rail; Inserting the connecting means in laterally compressed position with its underside in a longitudinal recess of a mounting rail; -e-engaging the fastening projections of the connecting means in mounting projections within the longitudinal recess of the mounting rail in particular by pressing the connecting means on its underside opposite top side; If necessary, adjusting the position of the connecting means by longitudinal displacement within the longitudinal recess of the mounting rail; Screwing in an optionally pre-assembled by means of the connection clamping part fixing screw, which, for example, previously performed by a hole of an attachment or the like for mounting a photovoltaic module

7 Μ 15622 was, in the through hole of the connecting means, being pressed by the fastening screw, the longitudinal side surfaces against the lateral mounting projections within the longitudinal recess of the mounting rail; if necessary, countering the attachment or the like to fix a photovoltaic module to the attachment screw; Optional, when using cross connectors, attach another mounting rail to other connecting means of each cross connector by appropriate repetition of the aforementioned sequence of method steps.

The fastening of the mounting rails takes place at existing or to be established building connection points. The mounting system according to the invention offers different, in each case individually matched to the respective execution of the building connection points connectors. The connecting pieces comprise at least one connecting means and are each fixable in a mounting rail.

The attachment of a connection clamping part on a head portion of a connecting means with a subsequent breaking of the Veibindungsmittelstegs is usually done at the factory. The mounting system according to the invention thus provides largely pre-assembled, integrated or prepared assemblies and components, whereby the assembly cost is advantageously reduced and the installation of roof structures when using the mounting system according to the invention is particularly convenient to carry out.

Depending on the structure of the respective system component or an attachment also fixing screws in the modules and components are already integrated. The through holes are designed, for example, in such a way that, with a small undersize, the fastening screws can be fastened clamped or pre-mounted in the through bores. The pre-assembled fastening screws can thus not be inadvertently loosened or lost, which represents a further advantage of the invention.

The screwing in a possibly unscrewed fastening screw, which was previously carried out for example by a bore of an attachment or the like for fixing a photovoltaic module, in the through hole of the connecting means, either by means of a torque wrench or hand-tight until a certain torque is reached. The screwed fastening screw, the longitudinal side surfaces of the connecting means against the side

Mounting projections pressed within the longitudinal recess of the mounting rail and a press fit between the mounting projections of the connecting means and the mounting projections in the longitudinal recess channel of the mounting rail is achieved. Due to the interference fit, the connecting means is fixed in its position within the mounting rail.

Through a recess on the bottom of the Längsausnehmungsbodens in Längsausnehmungskanal the mounting rail a space between the binding means and the mounting rail is created. Through this recess it is avoided that a screwed fastening screw is present on the mounting rail or touches it and this leads to an undesirable double fit between the connecting means and the mounting rail.

Further details, features and advantages of the invention will become apparent from the following explanation of exemplary embodiments schematically illustrated in the drawings. In the drawings: Figs. 1A and 1B show, respectively, a mounting system according to the invention in a sectional view from the side during the insertion of a connecting means into a mounting rail; FIG. 2 shows an assembly system according to the invention in a sectional view in profile with inserted connecting means; FIG. 3 shows an assembly system according to the invention in a sectional view in profile with an attachment attachable thereto; FIGS. 4A, 4B and 4C each show a connecting means in a side view (FIG. 4A) or in a sectional view in cross-section from the side (FIG. 4B) and in plan (FIG. 4C) as a detail of a device according to the invention mounting system; 5A, 5B and 5C respectively show a connection clamping part in side elevation (FIG. 5A) and in a cross-sectional view from the side (FIG. 5B) and in plan (FIG. 5C) as a detail of a mounting system according to the invention ; FIG. 6A shows a connection means with a binding clamping part in an exploded isometric view; FIG. FIG. 6B shows the connection means shown in FIG. 6A with the connection clamp part already attached; FIG. 7 is an isometric view obliquely from an assembly system according to the invention with attachment parts in an exploded view;

9 M15622 - Fig. 8 in an isometric view obliquely from two mounting rails, which are connectable to each other by a Kieuzverbindungsstück, in an exploded view; 9 is an isometric perspective view of an inventive cross-connector in a partial sectional view; 10 is a view corresponding to the arrangement of two mounting rails shown in FIG. 8, which are connected to a cross connector.

1A shows a mounting system 1 according to the invention in a sectional view from the side during the insertion of a connecting means 2 into a mounting rail 20. The connecting means 2 is inserted with its underside 3 into a longitudinal recess 21 of the mounting rail 20. On the longitudinal side surfaces 4 of the connecting means 2 fastening projections 5 are provided. A dividing groove 6, which is arranged substantially centrally on the underside 3 of the connecting means 2 and has a width 6.1, divides the connecting means 2 into two connecting-medium halves 2.1 and 2.2. The dividing groove 6 is here arranged in a plane 7, which essentially forms the plane of symmetry of the connecting means 2 and stands normally on its underside 3. Furthermore, the plane 7 of the dividing groove 6 extends in the longitudinal axis direction 8 of the connecting means 2. The two connecting-medium halves 2.1 and 2.2 are connected to one another at their side opposite the underside 3 with a connecting web 9. The connecting web 9 has a weakening 10, which is designed here in the form of a notch. The weakening 10 causes a deliberately designed predetermined breaking point of the connecting web 9. A width 12 of the connecting means 2 is greater than a clear width 23 of the longitudinal recess 21 of the mounting rail 20th

By lateral compression of the two connecting means halves 2.1 and 2.2 on the longitudinal side surfaces 4 in the direction of arrow 11, the connecting web 9 can bend in the weakening section 10. The two connecting means halves 2.1 and 2.2 can thus be pressed closer to each other at the bottom 3 by the pitch width 6.1. The width 12 of the connecting means 2 can thus be reduced by the width 6.1 of the dividing groove 6.

As illustrated in FIG. 1B, the connecting means 2 can now be inserted or pressed into the mounting rail 20 with the reduced width 12.1 thus compressed, which corresponds at most to the clear width 23 of the longitudinal recess 21.

10 Μ 15622

In Fig. 1A further includes a Durchgangssbohnmg 13 can be seen, which is provided for receiving a mounting screw, not shown, with an internal thread. At a head portion 14 of the connecting means 2, which head portion 14 is opposite to the underside 3 of the connecting means 2, a connecting bead 15 is provided. A connecting clamping member 16, which is designed here as an O-ring and fastened to the head portion 14 near the connecting web 9, serves on the one hand to reinforce the connecting web 9. By the connecting clamping member 16 is a collapse of the two connecting means halves 2.1 and 2.2 in the lateral direction in the direction of arrow 11 prevented. If the connecting web 9 between the two connecting medium halves 2.1 and 2.2 break during compression, so the two connecting means halves 2.1 and 2.2 are still held together by the connecting clamping member 16 articulated movable. On the other hand, the connection clamping part 16 also serves for the attachment of attachments or clamp brackets.

The connection clamping part 16 is also provided with a through hole 17 for passing a fastening screw. In the plugged state, the through hole 17 of the connection clamping part 16 and the through hole 13 of the connecting means 2 are arranged concentrically.

The mounting rail 20 has a channel-shaped longitudinal recess 21. On the side walls of the longitudinal recess 21 mounting projections 22 are arranged as longitudinal grooves on which the fastening projections 5 of the connecting means 2 can be brought into engagement.

Fig. 2 shows a further embodiment of a mounting system 1 according to the invention in a sectional view in profile with an already inserted into the mounting rail 20 connecting means 2. The mounting projections 22 within the longitudinal recess 21 are already brought here with the mounting projections 5 of the connecting means 2 into engagement. At the connection clamping part 16, an attachment 24, for example, a terminal holder for fixing a photovoltaic module, attached.

FIG. 3 shows a mounting system 1 according to the invention in a sectional view in profile with an attachment 24 which can be fastened to the connecting means 2. As an attachment 24, a two-part terminal mount for a photovoltaic module is shown here, which is fastened to the connection clamping part 16. A fastening screw 19 is already screwed into the through hole 17 of the connection clamping part 16. A 11 Μ 15622

Fixing screw tip 19.1 of the fastening screw 19 does not yet protrude in the preassembled state into the through-bore 13 of the connecting means 2. The two connecting-medium halves 2.1 and 2.2 are thus still capable of being compressed in the direction of arrow 11. It can be clearly seen that the original width 12 of the connecting means 2 exceeds the clear width 23 of the longitudinal recess 21.

4A is a detailed view of a connecting means 2 in side elevation. 4B shows the connecting means 2 in a sectional view in cross section corresponding to the sectional plane A-A shown in FIG. 4A. 4C shows the connecting means 2 in plan view.

Fig. 5A shows in detail a connection clamping part 16 in a side view. 5B shows the connection clamping part 16 in a sectional view from the side corresponding to the sectional plane B-B shown in FIG. 5A. A Veibindungsnut 18 serves to receive the Verbindungswulsts 15 of the illustrated example in Fig. 4B connecting means 2. Fig. 5C relates to the Veibindungsklemmteil 16 shown in Fig. 5A in a plan view in plan.

FIG. 6A shows a connection means 2 according to FIG. 4A with a connection clamping part 16 corresponding to FIG. 5A in an exploded isometric view. In the head portion 14 of the connecting means 2, the connecting bead 15 can be clearly seen, to which the connecting clamping part 16 with the connecting groove 18 can be plugged.

FIG. 6B shows the connecting means 2 shown in FIG. 6A with the connecting clamping part 16 already plugged on.

Fig. 7 illustrates in an isometric view obliquely from the front a mounting system 1 according to the invention with attachments 24 in an exploded view.

A first attachment 24, which is connected to a connecting means 2 or fixed thereto, is already mounted in a longitudinal recess 21 of a mounting rail 20. A supplementary attachment 24 complementary thereto is screwed tightly in the connecting means 2 by means of a fastening screw 29. By screwing the fastening screw 29 into the through hole 13 of the connecting means 2, the two connecting medium halves 2.1 and 2.2 are pressed against the mounting projections 22 of the mounting rail 2 and thus achieved a press fit of Veibindungsmittels 2.

FIG. 8 shows, in an isometric view obliquely from the front, two mounting rails 20 which can be connected to one another by a cross connector 25.

Fig. 9 shows in an isometric oblique view from the front of such inventive cross-connector 25 in a partial sectional view. The cross connector 25 has two connection means 2, whose base surfaces define respective attachment levels for mounting rails. The bases or the connecting planes of the connecting means 2 are arranged substantially perpendicular to each other. The lower connecting means 2 shown in Fig. 9 is rotatably mounted on a fastening screw 19. The longitudinal axis direction 8 of this connecting means 2 can be rotated or pivoted about the longitudinal axis of the fastening screw 19 within its connecting plane, whereby two mounting rails in different angular positions to each other by a single cross-connector 25 are connected to each other. Likewise, two mounting rails, not shown here by the cross connector 25 crosswise, so are substantially rechtwirikelig, connected to each other. Advantageously, a single fastening screw 19 is sufficient to press the connecting means halves 2.1 and 2.2 of both connecting means 2 in the installed state against the mounting projections of the two mounting rails 20.

Likewise, it is conceivable, in the case of a cross-connection piece 25, to fix all connecting means 2 in such a way that they can be rotated or swiveled within their respective connecting planes. This embodiment variant is not explicitly shown in the drawings.

Fig. 10 is a view corresponding to the arrangement shown in Fig. 8, in which case the two mounting rails 20 are already connected to a cross connector 25.

It is also possible within the scope of the invention, in addition to the cross connector 25 other, not shown here components or assemblies for mounting building structures or to connect the components of the mounting system 1 with each other use. Advantageously, such components or assemblies are already completely pre-assembled or have these already integrated components of the mounting system according to the invention. 13 Μ 15622

List of position numbers: 1 Mounting system 2 Connecting means 2.1.2.2 Connecting half 3 Bottom 4 Longitudinal side surface 5 Fixing projection 6 Dividing groove 6.1 Width of dividing groove 7 Plane groove plane 8 Longitudinal axis 9 Connecting bar 10 Weakening 11 Direction of arrow 12 Width of connecting means 12.1 Reduced width of the connecting means 13 through hole 14 head section 15 connecting bead 16 connecting clamping part 17 through hole 18 connecting groove 19 fixing screw 19.1 B efestigungsschraubenspitze 20 mounting rail 21 longitudinal recess 21.1 Längsausnehmungsboden 22 mounting projection 23 clear width of the longitudinal recess 24 attachment 25 cross connector

Claims (14)

14. 22 15622 Claims: 1. Mounting system (1) for fastening building structures, in particular photovoltaic modules, comprising at least one connecting means (2) and at least one mounting rail (20) with a longitudinal recess (21) into which the connecting means (2) engage can be brought, characterized in that the connecting means (2) has a divided structure with a dividing groove (6) in its longitudinal axis direction (8). 2. Mounting system (1) according to claim 1, characterized in that the dividing groove (6) is arranged substantially centrally on a lower side (3) of the connecting means (2). 3. Mounting system (1) according to claim 1 or 2, characterized in that the dividing groove (6) divides the binding means (2) into two connecting means halves (2.1, 2.2), which on one of the underside (3) opposite the head portion (14) a connecting web (9) are interconnected. 4. Mounting system (1) according Anspmch 3, characterized in that the connecting web (9) in the region of the dividing groove (6) has a weakening (10). 5. Mounting system (1) according to one of claims 1 to 4, characterized by a connection clamping part (16), which at the head portion (14) of the connecting means (2) near the Veibindungsstegs (9) can be fastened. 6. Mounting system (1) according to claim 5, characterized in that the connection clamping part (16) has a through hole (17) for receiving a fastening screw (19). 7. Mounting system (1) according to one of claims 1 to 6, characterized in that by lateral compression (11) of the two connecting means halves (2.1,2.2) on the longitudinal side surfaces (4) has a connecting means width (12) to a dividing slot width (6.1) is vemngerbar. Μ 15622 15 8. Mounting system (1) according to claim 7, characterized in that during the lateral compression (11) to the dividing groove width (6.1) reduced connecting means width (12.1) at most a clear width (23) of the longitudinal recess (21) of Mounting rail (20) is. 9. Mounting system (1) according to any one of claims 1 to 8, characterized in that on the longitudinal side surfaces (4) of the connecting means (2) fastening projections (5) are arranged, which are preferably aligned in the longitudinal axis direction (8). 10. Mounting system (1) according to one of claims 1 to 9, characterized in that the connecting means (2) has at least one through hole (13) which opens at the bottom (3). 11. Mounting system (1) according to claim 10, characterized in that at least one through hole (13) in a plane (7) of the dividing groove (6) is arranged. 12. Mounting system (1) according to any one of claims 10 or 11, characterized in that the longitudinal side surfaces (4) of the connecting means (2) are laterally outwardly pressed by a fastening screw (19) is screwed into the through hole (13). 13. Mounting system (1) according to one of claims 1 to 12 further comprising a cross connector (25), wherein at the cross connector (25) at least two connecting means (2) are fixed, respectively in longitudinal recesses (21) of mounting rails (20) into engagement can be brought. 14. A method for attaching roof structures, in particular of photovoltaic modules, with a mounting system (1) according to one of claims 1 to 13, characterized by the sequence of the following process steps: -a attaching mounting rails (20) on a building surface, such as a facade or a roof surface; if necessary, fitting a binding-clamping member (16) to a head portion (14) of a connecting means (2), a through-hole (17) of the connecting clamping member (16) being concentric with a through-hole (13) of the connecting means (2); 16 Μ 15622 -c- Breaking the two connecting means halves (2.1,2.2) and reducing the connecting means width (12) of the connecting means (2) by compressing (11) of its two longitudinal side surfaces (4) by the pitch slot width (6.1) on the Underside (3) until the reduced connecting means width (12.1) corresponds at most to the clear width (23) of the longitudinal recess (21) of a mounting rail (20); Inserting the connecting means (2) in laterally compressed position (11) with its underside (3) in a longitudinal recess (21) of a mounting rail (20); -e- latching of the fastening projections (5) of the connecting means (2) in mounting projections (22) within the longitudinal recess (21) of the mounting rail (20) in particular by pressing the connecting means (2) on its underside (3) opposite top side; If necessary, adjusting the position of the connecting means (2) by displacement in the longitudinal direction (8) within the longitudinal recess (21) of the mounting rail (20); screwing in a fixing screw (19) which may have been preassembled by means of the connection clamping part (16) and which has been previously carried through a hole of an attachment (24) or the like for fixing a photovoltaic module, into the through hole (13) of the connection means (13), wherein the longitudinal side surfaces (4) are pressed by the fastening screw (19) against the lateral mounting projections (22) within the longitudinal recess (21) of the mounting rail (20); -h- If necessary, countering the attachment (24) or the like for fixing a photovoltaic module to the fixing screw (19); Optional, when using cross connectors (25), attach another mounting rail (20) to further connection means (2) of each cross connector (25) by appropriate repetition of the aforementioned sequence of method steps.