Fastening arrangement for a support pan and method for fastening a support pan

Abstract

The present invention relates to a fastening arrangement for a support tile for mounting attachment elements, in particular solar energy modules, on a covered roof, comprising: a rail profile designed for fastening to at least one rafter; a support body having a mounting side designed for attachment to a support tile and a support section for load bearing on the rail profile; and a positive locking element, wherein the positive locking element and the rail profile are designed for positively locking anchoring of the support section in the rail profile. The present invention further relates to a method for fastening a support tile for mounting attachment elements, in particular solar energy modules, on a covered roof.

Description

FIELD OF THE INVENTION

[0001] The present invention relates to a fastening arrangement for a support pan for mounting add-on elements, in particular solar energy modules, on a covered roof and to a method for fastening a support pan for mounting add-on elements, in particular solar energy modules, on a covered roof. TECHNICAL BACKGROUND

[0002] In order to install add-on elements, particularly solar energy modules such as photovoltaic modules or solar thermal modules, on a roof that is already covered or is to be covered, individual roof tiles are often replaced with so-called support tiles. This sometimes involves complex modifications to the substructure, especially if the support tiles cannot be mounted directly on a rafter. For rafter-independent installation, individual roof support battens are replaced with wider boards and additional suction battens are inserted. Fastening to the boards / battens using screws usually requires force support, often even pre-tensioning of the support tiles, via neighboring roof tiles. Such systems are therefore very complex to install and are also susceptible to damage to the adjacent roof tiles.

[0003] Alternative systems sometimes only allow installation directly on the rafters or on counter battens attached to the rafters and therefore cannot be installed independently of the rafters. SUMMARY OF THE INVENTION

[0004] Against this background, the present invention is based on the object of providing an improved fastening for support pans.

[0005] According to the invention, this object is achieved by a fastening arrangement having the features of patent claim 1 and / or by a method for fastening having the features of patent claim 17.

[0006] Accordingly, it is provided: - A fastening arrangement for a support pan for mounting add-on elements, in particular solar energy modules, on a covered roof, comprising: a rail profile designed for fastening to at least one rafter; a support body having a mounting side designed for attachment to a support pan and a support section for load support on the rail profile; and a form-locking element, wherein the form-locking element and the rail profile are designed for the form-locking anchoring of the support section in the rail profile. - A method for fastening a support pan, in particular by means of a fastening arrangement according to one of the preceding claims, for the installation of attachment elements, in particular solar energy modules, on a covered roof, comprising the steps of: fastening a rail profile to at least one rafter; attaching a support body to an underside of a support pan; arranging a support section of the support profile on the rail profile in a load-bearing manner; and positively anchoring the support section in the rail profile by means of a positive-locking element.

[0007] The finding underlying the present invention is that both the assembly and the force flow of a support pan can be optimized by a positive fastening.

[0008] The idea underlying the present invention is therefore to provide a rail profile instead of previous wooden substructures, which is connected to one or more rafters for installation directly or indirectly via a counter batten attached to it. A support body that can be attached or mounted to the support tile by means of a form-locking element is provided in this rail profile, or anchored for installation. This provides a fastening arrangement or assembly that can be mounted independently of the rafters and optimized for force flow. In particular, compared to previous rafter-independent solutions, the number of steps and components required for installation is reduced, and force support via adjacent roof tiles is avoided.

[0009] The support body can be designed, in particular, for attachment or mounting to an underside of the support pan. For this purpose, the mounting side of the support body can have a surface shape corresponding to the underside of the support pan, and a mounting opening or bore can be provided. For example, a mounting means can be passed through the support pan and the support body for assembly.

[0010] By subsequently creating a positive fit, the support body can be inserted into the rail profile in a stress-free state of the support pan. A positive anchoring of the support section can then be provided in an assembly position. By creating the positive fit using the positive locking element, a force flow is ensured from the support pan via the support body and from its support section into the rail profile, which is supported directly or indirectly on one or more rafters.

[0011] For the installation of the support tile, the substructure of the roof tiles does not need to be modified. Simply mount the rail profile transversely on a rafter, if necessary with a support plate in between, or transversely across several rafters. The profile design allows for a high degree of flexibility in the lateral positioning of the rail profile itself and / or the support body to be anchored therein and the form-locking element. The support body can be offset continuously along the rail profile.

[0012] The rail profile can be attached directly to a rafter and / or to a counter batten mounted on the rafter. In both cases, the rail profile is designed for attachment to the rafter.

[0013] The support body and the form-locking element can be pre-assembled with the support socket or designed to be mountable by means of a fastening means, in particular a single fastening means. The fastening means can also be designed to establish the form-locking connection by means of the form-locking element, in particular by displacing the form-locking element relative to the support body by fastening the fastening means. For example, a screw can be provided as the fastening means, by means of which the form-locking connection can be established by tightening.

[0014] The form-locking element can have a variety of configurations suitable for establishing a positive connection between the rail profile and the support body. For example, the form-locking element can engage an undercut of the rail profile and / or engagement and counter-engagement elements and / or a surface structure or other form factor, thus providing a positive anchoring. In addition to the form-locking connection, a frictional connection can also be established.

[0015] The invention thus enables simplified installation of a support tile. Particularly in the case of renovation or retrofitting into a roof with a tiled roof, the required installation effort is significantly reduced. Furthermore, the fastening arrangement according to the invention enables a comparatively increased force transmission, so that fewer module supports are required for the installation of add-on elements.

[0016] Advantageous embodiments and further developments emerge from the further subclaims and from the description with reference to the figures of the drawing.

[0017] According to one embodiment, the support body is designed as a support profile. This enables a positive connection over a predetermined length of the support profile and thus a continuous offset between a center of the support profile and a center of the rail profile over the length of the rail profile, allowing the arrangement of the positively connected profiles to be freely adapted to the installation situation.

[0018] According to one embodiment, the rail profile has a central web and two protruding arms in cross-section, wherein an outer side of the central web is designed for attachment to at least one rafter and / or a counter batten mounted on the rafter. The web thus advantageously offers a comparatively large mounting surface for attaching the rail profile to the rafter or counter batten. Since the rail profile is mounted transversely to the rafter or counter batten, the width of the central web offers a comparatively large support surface. The arms serve to anchor the support body in connection with the form-fitting element. They preferably protrude essentially in the same direction, but can differ in their shape, in particular in their shape and / or surface structuring.The rail profile can thus have, at least substantially, a U-shape, whereby the arms can have additional form factors for a positive fit.

[0019] According to one embodiment, the rail profile is designed for installation in a substantially horizontal longitudinal direction on at least one rafter and / or a counter batten mounted on the rafter. Thus, in the installed state, the rail profile lies transversely, preferably perpendicularly, to the rafter and is directly or indirectly attached to it. The attachment is provided in such a way that the load-bearing loads acting on the support pan can be transferred via the rafter(s). Thus, preferably, both shear, tensile, and compressive forces can be transferred.

[0020] According to one embodiment, the support section for load support is formed on an inner side of the rail profile. In this way, a load acting on the support pan is absorbed via the support section in the rail profile by means of support on the inner side. This advantageously provides a direct flow of force from the support pan via the support section into the rail profile, without the need to transfer forces via adjacent roof tiles.

[0021] According to one embodiment, the support section has engagement elements, and the inner side has counter-engagement elements for establishing a positive connection. Thus, in addition to load-bearing, the support section and the inner side also serve to establish the positive connection and can establish this connection together with the positive connection element. For example, the positive connection element can be designed to engage and / or hold the engagement and counter-engagement elements in engagement with one another.

[0022] According to one embodiment, the support section and at least one arm of the rail profile are designed to support the load on an inner side of the arm. This enables a load-bearing anchoring of the support section in the arm.

[0023] According to one embodiment, the form-locking element is designed for the form-locking anchoring of the support section between the arms of the rail profile, in particular between the inner sides of both arms. Thus, the support section can be anchored between the two arms at any point along the rail profile by the form-locking element. For example, the support section can be blocked and / or wedged in a desired position by the form-locking element between the two arms.

[0024] Furthermore, according to one embodiment, the support section can engage between the arms at different depths and thus be anchored in an optimal position in which the support pan is stress-free, possibly even with a small distance from the web. In this way, tolerance compensation is provided both horizontally by the rail profile and vertically by the arms.

[0025] According to one embodiment, the inner side of the arm has a support surface inclined at a predetermined angle to the outer side of the central web. The inclined support surface is designed to bear the load in the orientation of a support pan attached to the support section, while compensating for a difference in inclination between a rafter connected to the rail profile and the support pan. In this way, an optimally vertical force introduction or perpendicular force transmission is provided despite the difference in inclination. Of course, the difference in inclination or the predetermined angle is adjustable or designable depending on the inclination of the roof and support pans. According to one embodiment, the predetermined angle of inclination lies in a range from 1° to 10°. In particular, the predetermined angle of inclination can lie in a range from 3° to 7°.According to a preferred embodiment, the angle of adjustment may be in a range of 4° to 6°, for example 5°.

[0026] According to one embodiment, the support section of the support profile has a support surface that runs perpendicular or at least substantially perpendicular to its mounting side. In this way, shear forces acting on the mounting side can be optimally dissipated via two surfaces perpendicular to it.

[0027] According to one embodiment, the support surface as engagement elements and / or the support surface as counter-engagement elements have a uniform surface structure for mutual anchoring. In particular, the surface structures can each be a grooved structure. The surface structure allows for interlocking in various relative positions, thus enabling a positive fit at different heights or distances between the support body or support profile and the web of the rail profile. In addition to a grooved structure, other interlocking surface structures would also be conceivable.

[0028] According to one embodiment, the form-locking element has an inclined sliding guide or surface, and the support body has a corresponding inclined counter-sliding guide or surface. The form-locking element is coupled to a tightening means and can be slid diagonally against the support body by actuating the tightening means for positive anchoring in the rail profile. The tightening means can be an element that can be adjusted by applying force and thus pulls the form-locking element against the inclined surface, so that adjusting the tightening means leads to a lateral displacement of the form-locking element by sliding along the inclined guide or surface.

[0029] According to one embodiment, the form-locking element is pre-tensioned by a spring element on the support body or support profile and is mounted so as to be displaceable against the spring pre-tension for positive anchoring. In this way, jamming and also unintentional anchoring of the support body or support profile in the rail profile or on the inner sides of the rail profile is avoided. Rather, a predetermined relative positioning between the support body or support profile and the form-locking element is ensured in an unanchored state, i.e. before anchoring, fastening or tightening of the form-locking element. Furthermore, the spring element also reliably holds the support profile to the underside of the support pan during assembly, so that the direct absorption and transmission of compressive forces via the fastening arrangement is ensured in the assembled state.In this way, compressive forces on neighboring roof tiles and pre-stressing of the support tile against the neighboring roof tiles are reliably avoided.

[0030] According to one embodiment, a support plate is provided for attachment to the surface of an individual rafter and / or a counter batten mounted on the individual rafter as a base for the rail profile. The rail profile can be firmly mounted thereon transversely to the rafter, in particular for absorbing shear forces as well as compressive and tensile forces. This ensures predetermined support for the rail profile.

[0031] According to one embodiment, the support sheet can have through holes for attaching the sheet to the rafter and / or the counter batten. Alternatively or additionally, elongated holes can be provided for mounting the rail profile, allowing the position of the rail profile to be variably adjusted, for example, to accommodate different support tile types or sizes and / or to accommodate the distance of the rail profile from an adjacent support batten. This enables the attachment of different support tiles and the use for different roof types, particularly with different roof tiles and / or different substructures.

[0032] According to one embodiment, the support plate can have double bends so that adjacent support battens can be wrapped around or rested against them. This provides anti-twist protection for the support plate. Furthermore, additional shear forces supported on, by, or onto the support batten can be absorbed. Rafter-independent positioning is thus freely selectable across the width of the support plate.

[0033] According to a further embodiment, which is provided in particular without a support plate, the rail profile is designed to be longer than the distance between two adjacent rafters, and the rail profile is designed to be attachable to two adjacent rafters. Thus, the rail profile bridges the distance between two rafters and can be attached to both rafters and / or counter battens mounted on the rafters, thus eliminating the need for a support plate. The support pan can thus be positioned independently of the rafters.

[0034] According to one embodiment of the installation method, the load-bearing arrangement and positive anchoring of the support section allows the rail profile to absorb both shear and compressive and tensile forces. This can be achieved either via a support plate or with a length spanning the distance between two rafters and fastening across both rafters and / or counter battens mounted on the rafters.

[0035] The above embodiments and further developments can be combined with each other as desired, where appropriate. In particular, all features of the fastening arrangement for a support cup can be transferred to the method for fastening a support cup, and vice versa.

[0036] Further possible embodiments, refinements, and implementations of the invention also include combinations of features of the invention described above or below with reference to the exemplary embodiments that are not explicitly mentioned. In particular, those skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the present invention. TABLE OF CONTENTS OF THE DRAWING

[0037] The present invention will be explained in more detail below with reference to the exemplary embodiments shown in the schematic figures of the drawing. In the drawings: Fig. 1 a schematic side view of a fastening arrangement according to an embodiment; Fig. 2 a schematic side view of a fastening arrangement according to another embodiment; Fig. 3 a perspective view of a fastening arrangement according to a further embodiment; Fig. 4 a wireframe representation of the fastening arrangement according to Fig. 3 with additional mounting elements; Fig. 5 a side view of a fastening arrangement in the assembled state; Fig. 6 a perspective view of a single support plate; Fig. 7 a schematic representation of a fastening arrangement mounted on a rafter by means of a support plate; Fig. 8 is a sectional view of an installed state of a support pan mounted by means of a fastening arrangement; and Fig. 9 a schematic representation of a rail profile mounted over at least two rafters.

[0038] The accompanying drawing figures are intended to provide a further understanding of embodiments of the invention. They illustrate embodiments and, in conjunction with the description, serve to explain principles and concepts of the invention. Other embodiments and many of the noted advantages will become apparent upon review of the drawings. Elements of the drawings are not necessarily shown to scale relative to one another.

[0039] In the figures of the drawing, identical, functionally identical and acting elements, features and components are provided with the same reference symbols, unless otherwise stated. DESCRIPTION OF EMBODIMENTS

[0040] Fig. 1 shows a schematic side view of a fastening arrangement 1 according to an embodiment.

[0041] The fastening assembly 1 is used for mounting a support tile 2, shown here in dashed lines, which in turn can be used for mounting add-on elements, in particular solar energy modules, on a covered roof. The assembly serves to directly or indirectly support the forces acting through the add-on elements on the rafters 4 of a covered roof. A symbolically represented rafter 4 is also shown in dashed lines.

[0042] The fastening arrangement 1 comprises a rail profile 3 designed for direct or indirect fastening to at least one rafter 4. In the illustrated embodiment, the rail profile 3 is, for example, fastened directly to the rafter 4. In further embodiments, however, a counter batten, as is customary in a roof truss, can be provided between the rafter 4 and the rail profile 3, to which the rail profile 3 is alternatively or additionally fastened. Of course, it is also possible to fasten the rail profile 3 to both the counter batten and the rafter 4.

[0043] The fastening arrangement 1 further comprises a support body 5, which has a mounting side 8 designed for attachment to an underside 6 of a support pan 2. A support section 9 protrudes from the mounting side to support the load on the rail profile 3. In the illustrated embodiment, the support section 9 rests downhill on an inner surface of the rail profile 3.

[0044] According to the illustrated embodiment, the rail profile 3 is essentially designed as a U-profile. As shown here by way of example, it can be an asymmetrical U-profile in which the area supporting the support section 9 is reinforced and designed for positive anchoring.

[0045] In the illustrated assembled position, the support body 5 is furthermore shown anchored in the rail profile 3 by means of a form-locking element 10.

[0046] Such a positive connection is preferably possible at different relative height positions of the support section 9 within the rail profile 3. In the illustrated embodiment, the supporting inner side of the reinforced region of the rail profile 3 is designed to be inclined, purely by way of example, wherein the positive connection element 10 clamps the support section 9 between the arms of the rail profile 3, thus creating a positive connection on the inclined side, which anchors the support section 9 in the rail profile 3 with the aid of the positive connection element 10 coupled thereto.

[0047] In further embodiments, differently designed positive connections between the support section 9 and the rail profile 3, preferably adjustable at different heights, can be provided.

[0048] By closing the positive connection after positioning a support body 5 connected to the support pan 2, wherein the support section 9 projects into the rail profile 3, the support section 9 can advantageously be anchored in a position in which the support body 5 exerts no or no significant forces on the support pan 2 in the unloaded state.

[0049] In a possible embodiment with spring preload, the support body 5 can be pressed against the carrier pan by means of a spring, so that a marginal force acts here.

[0050] In this way, it is achieved that, on the one hand, loads carried by the support pan 2 are substantially or completely carried by the support body 5 and, on the other hand, a flow of forces from the support pan 2 via adjacent roof tiles is avoided.

[0051] A fastening arrangement 1 can be used to implement a method for fastening a support tile 2, which is intended for the installation of add-on elements on a roof. For example, this can involve the installation of solar energy modules, such as photovoltaic modules or solar thermal modules.

[0052] One method step involves fastening the rail profile 3 to at least one rafter 4. A further step involves attaching the support body 5 to an underside 6 of a support pan 2. Then, in a further step, the support section 9 of the support profile 5 can be arranged on the rail profile 3 in a load-bearing manner. Finally, a further step involves positively anchoring the support section 9 in the rail profile 3 by means of a positive-locking element 10. The load-bearing arrangement of the support section 9 and the positive locking are preferably carried out in a manner that allows the rail profile 3 to absorb both shear forces and compressive and tensile forces.

[0053] Fig. 2 shows a schematic side view of a fastening arrangement 1 according to a further embodiment.

[0054] The embodiment shown here differs from the embodiment according to Fig. 1 by the design of the positive connection between support section 9 and rail profile 3.

[0055] In this embodiment, the support body 5 is designed as a support profile, which is provided with engagement elements 26 in the region of the support section 9. The rail profile 3 is provided with counter-engagement elements 27 on the inner surface supporting the support section 9. The engagement elements 26 and counter-engagement elements 27 are preferably formed constant along the rail profile 3 and the support profile 5, so that the support section 9 engages with its engagement elements 26 into the counter-engagement elements 27 of the rail profile 3 over the entire length of the support profile 5. Interruptions in the or several parallel engagement elements 26 or counter-engagement elements 27 would also be conceivable in other embodiments.

[0056] In the illustrated embodiment, the engagement elements 26 and counter-engagement elements 27 are shown purely as examples as triangular grooves and ribs. Other embodiments may also involve differently shaped engagement and counter-engagement elements 26, 27.

[0057] In the illustrated embodiment, several identically shaped engagement and counter-engagement elements 26, 27 are arranged one above the other, enabling engagement at different heights. Thus, in an unloaded state, the support pan 2, supported by the support section 9 of the support profile 5, is as free as possible from the forces generated by the positive anchoring. At the same time, in a loaded state of the support pan 2, the load is transferred to the rail profile 3 essentially via the support section 9 of the support profile 5.

[0058] The form fit between support profile 5 and rail profile 3 is also closed by means of a form fit element 10 analogous to the embodiment according to Fig. 1, where in contrast to Fig. 1, the inner sides of the arms of the rail profile 3 can also run parallel. In the illustrated embodiment, purely by way of example, both inner sides are parallel to each other at the same angle to a central web of the U-profile. The form-locking element 10 thus serves to secure the form-locking connection between the engagement and counter-engagement elements 26, 27.

[0059] Fig. 3 shows a perspective view of a fastening arrangement 1 according to a further embodiment.

[0060] It is a compared to Fig. 2 further optimized embodiment, wherein the basic elements are also present. The rail profile 3 essentially forms a U-shape in cross-section with a central web 11 and two protruding arms 12, 13. The form-locking element 10 is also designed here for the form-locking anchoring of the support section 9 between the arms 12, 13 of the rail profile 3, i.e., on the inner sides of both arms.

[0061] An outer side 14 of the central web 11, which represents an underside in the illustration, is designed for attachment to at least one rafter 4 and / or a counter batten mounted on the rafter 4. A fastening means 28 is provided for this purpose. Furthermore, the support body or the support profile 5 is designed for attachment to a support pan 2. A fastening means 7 is provided for this purpose. Preferably, a plurality of fastening means 7, 28 are provided in each case.

[0062] The fastening means 7, 28 are designed here, for example, in the form of through-holes. Of course, other types of fastening means 7, 28 can also be provided in other embodiments.

[0063] The rail profile 3 is designed for installation on at least one rafter 4, essentially horizontally aligned in the longitudinal direction. This can be achieved, for example, by alignment using a spirit level and installation via the fastening means 28. The design for horizontally aligned installation is expressed in particular in the axially constant course of a support surface 16 of the supporting inner side 15 of the rail profile 3 along the profile. The support section 9 of the support profile is designed to support the load on the support surface 16 of the arm 13 via a corresponding support surface 17.

[0064] The support surface 17 runs perpendicular to the mounting side 8, whereby deviations are possible, for example due to manufacturing tolerances. Therefore, the rail profile 3 requires an inner side 15 parallel to the support profile 5 so that the support surface 17 and the support surface 16 are aligned with each other. Since the loads are directed downhill according to the roof pitch, the profiles are preferably arranged horizontally in the mounted state in order to transfer the loads via the support surface 17 and support surface 16 onto the rail profile and finally onto the rafter 4 (see Fig. 1, Fig. 2, or Fig. 8), directly or, if necessary, indirectly via a counter batten mounted on a rafter 4.

[0065] Fig. 4 shows a wireframe representation of the fastening arrangement according to Fig. 3 with additional mounting elements.

[0066] As already mentioned in Fig. 3 and visible here over the entire profile length, a support surface 17 of the support section 9 has a uniform surface structuring 19 as engagement elements, which are similar to those in relation to Fig. 2 explains how it serves to create a positive connection at different heights. A support surface 16 on the inside of the rail profile has a corresponding, uniform surface structure 18 as counter-engagement elements.

[0067] In the illustrated embodiments, both surface structures 18, 19 are, for example, a grooved structure for anchoring through mutual engagement. A positive connection is achieved by the positive-locking element 10, which is designed here as a wedge-shaped profile and holds the surface structures 18, 19 in engagement with one another.

[0068] To create the positive connection, the positive-locking element 10 has an inclined sliding surface 20, and the support body 5, designed here as a support profile, has a corresponding inclined counter-sliding surface 21. This allows the positive-locking elements 10 to slide obliquely against each other on the support section 9, whereby the positive-locking element 10 is displaceable laterally relative to the support profile 5. In this way, the positive-locking element 10 is capable of clamping the support section 9 of the support profile 5 between the two arms 12, 13 of the rail profile 3 and anchoring it therein in a form-fitting manner via the surface structuring at 18, 19.

[0069] In further embodiments, other types of sliding guides, for example with a guide groove or the like, can also be provided.

[0070] For displacement or oblique sliding, the form-locking element 10 is coupled to a tightening means 22 and can thus be actuated from above or from the outside.

[0071] The tightening means 22, which is only indicated schematically here, can, for example, have an adjusting screw 22a according to the illustrated embodiment. Accordingly, the form-locking element 10 can have a corresponding thread 22b, for example in the form of a threaded bore or a recessed threaded nut. The support profile 5 can have a through-hole 22c in the area between a head of the adjusting screw 22a and the thread 22b. By turning the adjusting screw 22a, the form-locking element 10 is thus tightened onto the support socket and thus slides obliquely along the support profile 5, so that it engages the rail profile 3 in a form-fitting manner at the surface structures 18, 19. In addition to the form-fitting engagement, it can also wedge itself in a force-fitting manner upon further tightening.

[0072] The form-locking element 10 is further pre-tensioned against the support body or the support profile 5 by a spring element 23. In this way, the form-locking element 10 is displaceably mounted on the support profile 5 against the spring pre-tension for the positive anchoring of the support profile and is held at a distance so that it remains in a predetermined position for assembly, which allows the insertion of the support profile 5 into the rail profile 3. Only in a desired inserted assembly position does the support profile 5 come into positive engagement with the rail profile 3 by actuating the tightening means 22 and corresponding lateral displacement of the form-locking element 10. In this way, undesirable resistance and jamming during assembly are effectively prevented.

[0073] Furthermore, the spring element 23 also reliably holds the support profile 5 to the underside 6 of the support tile 2 during assembly, ensuring the direct absorption and transmission of compressive forces via the fastening arrangement 1 in the assembled state. This reliably prevents the application of compressive forces to adjacent roof tiles and also prestresses the support tile 2 against the adjacent roof tiles.

[0074] As already mentioned in relation to Fig. 1 and Fig. 2, the two arms 12, 13 of the rail profile are not symmetrical. Rather, the inner side of the arm 13 supporting the support section 9 has a support surface 16 inclined at a predetermined angle α to the outer side of the central web 11. This is explained with reference to Fig. 5 is explained in more detail.

[0075] Fig. 5 shows a side view of a fastening arrangement 1 in the assembled state.

[0076] In the illustrated assembled state, the support profile 5 is arranged with its mounting side on a bottom side 6 of a support pan 2 and is secured in the assembled state. The fastening means provided for this purpose, here exemplified in the form of the adjusting screw 22a, simultaneously serves as a tightening means 22 for the form-locking element 10. By means of the through-hole 22c, the adjusting screw 22a extends through the support profile 5 in the area of ​​the mounting side 8 and is screwed into the thread 22b of the form-locking element 10.

[0077] Between the support profile 5 and the form-locking element 10, the adjusting screw 22a is guided through the spring element 23, which, by means of its pretension, on the one hand holds the support profile 5 to the carrier pan 2 and, on the other hand, keeps the form-locking element 10 at a distance from it determined by the screwed-in depth.

[0078] The carrier pan 2 can, for example, be a metal pan.

[0079] In the embodiment shown, the rail profile 3 is mounted on a support plate 24, which in turn can be mounted on a rafter 4 (not shown here) and / or a counter batten attached to the rafter 4.

[0080] The side view shown clearly shows the asymmetrical design of the rail profile 3 with two asymmetrically shaped arms 12, 13. The support surface 16 of the arm 13 is designed to absorb loads in the orientation of the support pan 2 fastened to the support section 9, while compensating for a difference in inclination between the support plate 24 or a rafter 4 connected to the rail profile 3 via the support plate 24 and the support pan 2. For this purpose, the support surface 16 is inclined to the outer side of the central web 11 by the predetermined angle α. In this way, the support surface 16 absorbs loads acting downslope on the support pan 2 due to the roof pitch in a normal orientation, so that these loads are transferred directly to the rail profile 3.

[0081] An inner surface 29 of the opposite arm 12 is here positioned parallel to the support surface 16. Thus, the support profile 5 can be inserted into the rail profile 3 in a configuration pre-assembled with the support socket 2, the spring element 23, and the form-locking element 10, but not tightened with the tightening means 22, in a direction running along the inner surface 29 of the arm 12. In particular, the lateral offset of the form-locking element 10 along the inclined sliding surface 20 enables insertion into the rail profile 3 from above, i.e., transversely to the profile direction and to the grooves of the surface structures 18, 19.In the inserted position, by tightening the tightening means 22, the lateral offset of the form-locking element 10 along the inclined sliding surface 20 can lead to a support on the arm 12 and thus the form-locking of the surface structures 18, 19 can be produced on the opposite arm 13, as shown in . Fig. 5 is recognizable.

[0082] Fig. 6 shows a perspective view of a single support plate 24.

[0083] The support plate 24 has two folds 30, 31, which each serve as a stop for support slats 25 adjacent to the support plate 24 (see Fig. 8) and can therefore also serve as an anti-rotation device. The upper bevel 31 has two bends so that it can encompass a supporting slat 25 and thus also transmit shear forces.

[0084] Furthermore, fastening means 32, here for example in the form of through holes, for fastening to a rafter 4 or a counter batten 34 fastened to a rafter 4 (see Fig. 7). In the illustrated embodiment, three through-holes are provided purely as an example; however, depending on the dimensions, more or fewer fastening means 32 may of course be provided.

[0085] In addition, variably adjustable fastening means 33 are provided for fastening the rail profile 3 in the longitudinal direction of the rafters, here, for example, in the form of elongated holes. Purely as an example, three parallel elongated holes are provided on the eaves side at the same height. However, depending on the dimensions, more or fewer fastening means 33 can of course also be provided, if necessary at different heights along the support plate 24. Different support tiles 2 of different dimensions can be attached through the elongated holes using the fastening arrangement 1, in particular adapted to roof tiles present on a covered roof.

[0086] Fig. 7 shows a schematic representation of a fastening arrangement 1 mounted on a rafter 4 by means of a support plate 24.

[0087] The support plate 24 is intended for attachment to the surface of a single rafter 4 or a counter batten 34 mounted on the rafter 4 as a base for the rail profile 3. The rafter and the counter batten 34 are shown here in dashed lines for clarity.

[0088] The rail profile 3 can be firmly mounted on the individual rafter 4 and / or the counter batten 34 fastened to the rafter 4 by means of the support plate 24 in an orientation transverse to the rafter 4, so that it is capable and intended to absorb shear forces as well as compressive and tensile forces.

[0089] In the illustrated embodiment, the rail profile 3 is attached to the support plate 24 or in its elongated holes using fastening means, for example, by screwing. This allows for adaptation to different pan formats and is advantageously material-independent, especially when different materials are used for the support plate 24 and the rail profile 3.

[0090] In other embodiments, alternative or additional fastening would also be conceivable, depending on the material selection, for example with rivets and / or material bonding, e.g. by gluing or, in the case of compatible materials, by welding.

[0091] In the thus firmly mounted and preferably horizontally aligned rail profile 3, the lateral position of the support profile 5 can be adjusted even after insertion into the rail profile 3 before the form fit is closed. For this purpose, the support profile 5 can be moved along the rail profile 3 to adjust its position, as schematically indicated here by the directional arrows.

[0092] Often, a roof tile, and consequently a support tile 2 that can be mounted in its place, is not located directly above the rafter 4 or the counter batten 34, but is offset laterally in one direction. Such an offset can be compensated for by the rail profile 3 in combination with the support plate 24. The length L1 of the rail profile 3 is dimensioned such that, regardless of the position of the rafter 4 relative to the roof tiles, a support tile 2 can always lie directly above the rail profile 3 and thus transfer the loads to the rail profile 3. In particular, the length L1 can be half or a full roof tile width.

[0093] Purely by way of example, in the illustrated embodiment, the length L1 of the rail profile 3 is equal to the width of the carrier plate 24. In further embodiments, alternative relative arrangements of the rail profile 3 on the carrier plate 24 would also be conceivable, in particular if the carrier plate 24 is wider than a length L1 of the rail profile 3, even with a lateral offset.

[0094] The support plate 24, in turn, is designed to transfer all forces absorbed by the rail profile 3 to the rafter 4 or the counter batten 34, particularly if the support pan 2 is laterally offset from the rafter 4 / the counter batten 34. The support plate 24 thus prevents twisting, torsion, bending, or other deformation of the rail profile 3 caused by any offset of the support pan 2 relative to the rafter 4.

[0095] The integration of the fastening arrangement 1 thus formed in a covered roof is described below in Fig. 8 shown.

[0096] Fig. 8 shows a sectional view of an installed state of a support pan 2 mounted by means of the fastening arrangement 1.

[0097] The support tile 2, here made, for example but not necessarily, of an aluminum alloy, is arranged between a preceding roof tile 35 overlapping above it and a subsequent roof tile 36 overlapping below it. For example, but not necessarily, these can be clay roof tiles. At an upper end, the support tile 2 is suspended from a support batten 25 attached to the rafter 4 or to a counter batten 34 attached to the rafter. The support tile 2 is additionally fastened to the support batten 25 via fasteners 37, here, for example, screwed.

[0098] The support plate 24 with its bevel 31 is also mounted directly on the support batten 25 on the rafter 4 via the fastening means 32 (not shown here for better clarity), also screwed as an example.

[0099] The rail profile 3 is arranged between the support plate 24 and the support pan 2 and is fastened to the support plate 24 via the fastening means 33, also screwed for example.

[0100] With the tightening means 22, the support profile 5 arranged on the underside 6 of the support pan and, via the intermediate spring element 23, the wedge-shaped form-locking element 10 are mounted on the support pan 2 and inserted into the rail profile 3. By tightening the tightening means 22, a form-locking connection is established between the rail profile 3 and the support profile 5 in the area of ​​the support section 9 and the form-locking element 10, as described with reference to Fig. 5 described.

[0101] Furthermore, the angle of attack α determined by the inclination of the mounted support pan 2 to the rafter 4 is Fig. 5 is set here in the same way. The angle of inclination can be in a range from 1° to 10°, in particular 3° to 7°, with an angle between 4° and 6°, typically about 5°, being preferred.

[0102] As can be seen, the support tile 2 is supported next to the support batten 25 via the fastening arrangement 1 on the rafter 4 or a counter batten 34 attached thereto. In particular, no loads acting on the support tile 2 are supported on the roof tile 36 arranged below the support tile 2, so that the latter remains undamaged when the support tile 2 is loaded. Fig. 8, this is evident from the remaining gap 38 between the support tile 2 and the roof tile 36. Rather, due to the prevailing form fit, the rail profile 3 absorbs all forces acting on the support tile 2, in particular all shear, compressive, and tensile forces.

[0103] Fig. 9 shows a schematic representation of a rail profile 3 mounted over at least two rafters 4.

[0104] This is a further method of mounting the rail profile 3, which is possible in particular without a support plate 24. In the illustrated embodiment, the rail profile 3 is designed with a length L2 which extends at least over the distance between two rafters 4, so that it can be fastened in a rotationally secure manner to the rafters 4 or to counter battens 34 fastened to the rafters 4. A length of the rail profile 3 is provided greater than the distance between two adjacent rafters 4. Fastening means 28 provided for fastening are not shown here for the sake of clarity; they can be a screw connection, for example.

[0105] Although the present invention has been fully described above using preferred embodiments, it is not limited thereto, but can be modified in a variety of ways. In particular, instead of a support profile with a constant cross-section, a three-dimensionally differently shaped support body can be used, for example, instead of a profile, a cast part or milled part can be used. In particular, this can also be a force-flow-optimized, essentially notch-free component. List of reference symbols 1 Mounting arrangement 2 support pans 3 rail profile 4 rafters 5 Support body or support rail 6 Bottom 7 Fasteners 8 Mounting side 9 Support section 10 Form-locking element 11 jetty 12 arms 13 arms 14 Outside 15 Inside 16 Support surface 17 Support surface 18 Surface structuring 19 Surface structuring 20 Sliding surface 21 Counter sliding surface 22 Tightening agents 22a Adjusting screw 22b thread 22c through hole 23 Spring element 24 carrier plate 25 support batten 26 engagement element 27 Counter-engagement element 28 fasteners 29 inner surface 30 bending 31 chamfer 32 fasteners 33 fasteners 34 Counterbar 35 roof tiles 36 roof tiles 37 fasteners 38 distance

Claims

[1] Fastening arrangement (1) for a support pan (2) for mounting attachment elements, in particular solar energy modules, on a covered roof, comprising: a rail profile (3) designed for attachment to at least one rafter (4); a support body (5) having a mounting side (8) designed for attachment to a support pan (2) and a support section (9) for load support on the rail profile (3); and a form-locking element (10), wherein the form-locking element (10) and the rail profile (3) are designed for the form-locking anchoring of the support section (9) in the rail profile (3). [2] Fastening arrangement according to claim 1, characterized by that the support body (5) is designed as a support profile. [3] Fastening arrangement according to one of the preceding claims, characterized byin that the rail profile (3) has a central web (11) and two projecting arms (12, 13) in cross-section, wherein an outer side (14) of the central web is designed for fastening to at least one rafter (4) and / or a counter batten mounted on the rafter. [4] Fastening arrangement according to one of the preceding claims, characterized by that the rail profile (3) is designed for mounting on at least one rafter in a substantially horizontal direction. [5] Fastening arrangement according to one of the preceding claims, characterized by that the support section (9) is designed for load support on an inner side (15) of the rail profile. [6] Fastening arrangement according to claim 5, characterized by that the support section (9) has engagement elements (26) and the inner side (15) has counter-engagement elements (27) for producing a positive connection. [7] Fastening arrangement according to claims 3 and 5, characterized by that the support section (9) and at least one arm (13) of the rail profile (5) are designed to support the load on an inner side of the arm (13). [8] Fastening arrangement according to claim 7, characterized by that the form-locking element (10) is designed for the form-locking anchoring of the support section (9) between the arms (12, 13) of the rail profile (3), in particular between the inner sides of both arms. [9] Fastening arrangement according to one of claims 5 to 8, characterized by in that the inner side of the arm has a support surface (16) which is inclined to the outer side of the central web (11) by a predetermined angle (α), which is designed to absorb the load in the orientation of a support pan (2) fastened to the support section (5) while compensating for a difference in inclination between a rafter (4) connected to the rail profile (3) and the support pan (2). [10] Fastening arrangement according to claim 9, characterized bythat the predetermined angle of adjustment is in a range of 1° to 10°, in particular 3° to 7°, preferably 4° to 6°. [11] Fastening arrangement according to claim 8 or 9, characterized by that the support section (9) of the support profile (5) has a support surface (17) which runs at least substantially perpendicular to its mounting side (8). [12] Fastening arrangement according to one of claims 8 to 10, characterized by that the support surface as engagement elements (26) and / or the support surface as counter-engagement elements (27) have a uniform surface structuring (18, 19), in particular a groove structuring, for mutual anchoring. [13] Fastening arrangement according to one of the preceding claims, characterized byin that the form-locking element (10) has an oblique sliding guide or surface (20) and the support body has a corresponding oblique counter-sliding guide or surface (21), wherein the form-locking element (10) is coupled to a tightening means (22) and can be slid obliquely against the support body (5) by actuating the tightening means (22) for form-locking anchoring in the rail profile (3). [14] Fastening arrangement according to one of the preceding claims, characterized by that the form-locking element (10) is pre-tensioned by a spring element (23) on the support profile (5) and is displaceably mounted against the spring pre-tension for form-locking anchoring. [15] Fastening arrangement according to one of the preceding claims, characterized bythat a support plate (24) is provided for fastening to the surface of an individual rafter (4) and / or a counter batten (34) mounted on the rafter as a base for the rail profile (3) and the rail profile (3) can be firmly mounted thereon transversely to the rafter (4), in particular for absorbing both shear forces and pressure and tensile forces. [16] Fastening arrangement according to one of the preceding claims, characterized by that a length of the rail profile (3) is provided which is greater than the distance between two adjacent rafters (4) and that the rail profile (3) is designed to be fastened to at least two adjacent rafters. [17] Method for fastening a support pan, in particular by means of a fastening arrangement according to one of the preceding claims, for the installation of attachment elements, in particular solar energy modules, on a covered roof, comprising the steps: Fastening a rail profile (3) to at least one rafter; Attaching a support body (5) to an underside (6) of a support pan (2); load-bearing arrangement of a support section (9) of the support profile (5) on the rail profile (3); and positive anchoring of the support section (9) in a mounting position in the rail profile (3) by means of a positive locking element (10). [18] Method according to claim 17, characterized by that the load-supporting arrangement and positive anchoring of the support section (9) allows both shear force and pressure and tensile force absorption of the rail profile (3).

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