DE20116359U1 - Fastening unit for fastening roof components to a connecting area of two roof sections of an aluminum roof arranged side by side - Google Patents

Description

Dipl.-Chem. E.L. FRITZ Dr. Dipl.-Phys. R. BASFELD Patent attorneys

M. HOFFMANN

B. HEIN Lawyers

Ostentor 9 59757 Arnsberg

GM 01/105 04.10.2001/BA/SE

J. Heuel & Sons GmbH Am Lindhövel 3

5984 6 Sundern

"Fastening device for the attachment of

Roof components at a connection area between two

side-by-side roof sections of a

Aluminium roof"

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The present invention relates to a fastening device for fastening roof components to a connecting region of two roof sections of an aluminum roof arranged next to one another, wherein the fastening device comprises an attachment part for attaching roof components and two opposing clamping jaws connected to the attachment part, which can be moved against one another from a first position in which the fastening device can be applied to a part of the connecting region into a second position in which the clamping jaws, in the state of the fastening device applied to the connecting region, are pressed against the part of the connecting region between them and/or engage behind this part in such a way that the fastening device is attached to the connecting region.

A fastening device of the aforementioned type is known, for example, from the KAL-ZIP assembly instructions from Hoogovens Aluminium Bausysteme in Koblenz from 1998. The aforementioned connecting areas of two sections of the aluminum roof are achieved by connecting the ends of these sections that protrude from the roof in the form of a web by flanging them together, so that bead-like parts that are flanged together are created at the end of the connecting areas that protrude from the web. The fastening devices from the prior art according to the aforementioned assembly instructions, for example according to page 45 of these assembly instructions, have two clamping jaws that have hollow cylinder segment-shaped engagement surfaces at their ends facing the connecting area. The clamping jaws can be secured to one another above the connecting area with screw means, the screw means reaching through the clamping jaws parallel to the surface of the roof in the connecting direction. On the top side of the fastening device according to the prior art facing away from the roof,

on one of the clamping jaws, an angled plate designed as an attachment part is provided, on which fastening options for roof components such as step gratings or the like are provided. In this way, any roof components can be attached to the roof using the fastening device after it has been attached to the connecting area of the roof sections. A disadvantage of this prior art is that the clamping jaws, which are not or only loosely connected to one another, can only be positioned with difficulty with one hand during application to the connecting area so that the screw means, which are designed as a screw and nut, for example, can be tightened with the other hand. Furthermore, the fastening devices according to the prior art do not have any movement limiting means, so that the connecting area of the sections of the aluminum roof can be damaged if the aforementioned screw means are tightened too tightly.

The problem underlying the present invention is the creation of a fastening device of the type mentioned at the outset, which can be more easily applied to the connecting area of two roof sections and fastened thereto.

This is achieved according to the invention in that at least one of the clamping jaws has at least two sections on its side facing the attachment part, of which the outer section facing away from the other clamping jaw is fixed at least partially against the attachment part in the first position of the clamping jaws, whereas the at least one second section in the first position of the clamping jaws is at least partially not against the attachment part, and wherein the clamping jaws can be transferred into the second position in that the at least one second section of at least one of the clamping jaws is moved towards the attachment part. The solution according to the invention

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This ensures that the clamping jaws can be pre-assembled to the attachment part at the factory, whereby they can be pre-assembled in such a way that the clamping jaws can be loosely attached to the connection area, in particular snapped or latched on. After this attachment, the middle section of one or both of the clamping jaws is then moved towards the attachment part in such a way that the fastening device is fixed to the connection area of the roof sections.

In particular, the fact that the clamping jaws are pre-assembled at the factory means that the fastening device can be easily snapped or locked onto the connection area makes installation easier.

According to a preferred embodiment of the present invention, each of the clamping jaws has two sections, whereby the clamping jaws can be moved into the second position by moving the section facing the adjacent clamping jaw in the direction of the attachment part. In this case, both outer sections of the side of the clamping jaws facing the attachment part are advantageously fixed at least partially against the attachment part. This means that the fastening device can already be brought into a state at the factory that is suitable for snapping or locking onto the connection area, so that assembly is made significantly easier. The user of the fastening devices according to the invention only needs to press them onto the connection area from above with the two clamping jaws and then clamp the fastening devices to the connection area by moving the middle sections of the clamping jaws in the direction of the attachment part.

This can preferably be achieved by moving the inner section(s) of the clamping jaws towards the attachment part by means of screwing means. For this purpose, it proves particularly advantageous

-A-

if the screw means comprise a nut designed as a square nut which is held in a rotationally fixed manner between the two clamping jaws in both the first and the second position of the clamping jaws, wherein the screw means further comprise a screw which is accessible from the side of the attachment part facing away from the clamping jaws and which can be screwed into the nut to transfer the clamping jaws from the first position to the second position. The user of the fastening devices according to the invention therefore simply has to tighten the screw from above, for example with a cordless screwdriver, after snapping the fastening device onto the connection area, until the clamping jaws grip around the flanged part of the connection area in such a way that a fastening is achieved.

According to a preferred embodiment of the present invention, the two sections of the sides of the clamping jaws facing the attachment part are flat and form an angle with one another such that in the first position of the clamping jaws the respective outer section of the two clamping jaws rests at least partially on corresponding surfaces of the attachment part and the respective inner section or section facing the adjacent clamping jaw protrudes from the connection area with the outer section, starting from the attachment part. The angle between these two sections can be, for example, between 2° and 20°, preferably between 4° and 10°, in particular 6°. The angle enclosed between the two sections ensures that, despite the outer area of the sides of the clamping jaws facing the attachment part, the middle or mutually facing sections of the sides of the clamping jaws facing the attachment part do not rest against the attachment part, so that sufficient play remains for fastening or moving the clamping jaws towards one another by means of the aforementioned screw means.

The aforementioned movement of the clamping jaws towards each other in dependence on the movement of the inner sections of the

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The sides of the clamping jaws facing the attachment part can be achieved in that the clamping jaws are designed in a substantially L-shaped manner, with one leg which has the two sections which at least partially rest against the attachment part, and with a leg which projects away from this and the attachment part essentially perpendicularly and which has in its end region contact surfaces for holding the part of the connecting region of the aluminum roof. By moving the sections of the clamping jaws facing one another which do not rest against the attachment part in the first position towards the attachment part, the legs of the clamping jaws which carry the contact surfaces are moved towards one another until the flanged part of the connecting region is held by the clamping jaws.

For this purpose, the attack surfaces can have the shape of a hollow cylinder segment, with the inner sides of these hollow cylinder segments facing each other and being able to accommodate the flanged part of the connection area between them. In this way, the attack surfaces are essentially adapted to the shape of the flanged part of the connection area.

Advantageously, on the leg of the clamping jaws protruding from the attachment part, between the attachment part and the engagement surfaces, facing movement limiting projections are attached, which in the second position abut against one another in order to limit the movement of the clamping jaws towards one another in accordance with a predetermined clamping force. These movement limiting projections stop the movement of the clamping jaws towards one another at a point that can be specified at the factory, so that the clamping force does not exceed a critical force above which the flanged part of the connection area could be damaged.

According to a preferred embodiment of the present invention, the attachment part is substantially plate-shaped

and has contact surfaces for the outer sections of the clamping jaws facing away from one another in two opposite edge areas. These outer sections of the clamping jaws facing away from one another can be riveted to the contact surface at the factory in the first position of the clamping jaws.

Furthermore, the essentially plate-shaped attachment part can have a recess for receiving the head of the screw, preferably designed as a countersunk head screw, on its side facing away from the clamping jaws, around a hole provided for the screw. This creates a smooth contact surface for roof components to be attached to the side of the attachment part facing away from the clamping jaws.

According to a preferred embodiment of the present invention, the fastening device comprises a clamping jaw unit in which the two clamping jaws are connected to one another. In contrast to the embodiment with two separate clamping jaws, this embodiment increases the user-friendliness. In an embodiment with a clamping jaw unit, there are only two separate parts that are easier to handle.

Preferably, the two clamping jaws can be connected to each other via two connecting webs that have a predetermined breaking point. In addition, the two clamping jaws can be connected to each other via a spring tongue that has a hole for the screw to pass through. The connecting webs with predetermined breaking point can serve as a transport lock. When the screw is tightened, these predetermined breaking points break open, so that the connection between the two clamping jaws is only provided by the spring tongue, which can be made of stainless steel, for example. This spring tongue provides a flexible

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Connection between the clamping jaws so that dimensional accuracy of the fastening device is guaranteed.

Pockets for receiving a nut can be formed in the two clamping jaws in sections adjacent to the attachment part. This nut and the holes arranged in the pockets can be aligned with holes in the attachment part, whereby screws can be screwed into this nut through the aforementioned holes in order to screw roof components onto the attachment part. This design of the clamping jaws further increases the stability of the connection between the attachment part and the clamping jaws when roof components are screwed on.

According to the invention, it can be provided that the clamping jaw unit and the attachment part are connected to one another in the first position via the screw and a square nut resting on the spring tongue. In this way, the user is provided with a compact fastening device that can be placed on the roof and can be attached to the roof by simply attaching the screw.

According to a preferred embodiment of the present invention, the fastening device is essentially designed as an aluminum cast part. This allows the fastening device to be manufactured cost-effectively.

·< Iti· » te ·· «

-8th-

Further features and advantages of the present invention will become clear from the following description of preferred embodiments with reference to the accompanying drawings. 5

Fig. 1 is a schematic side view of a

connecting area of an aluminium roof with a fastening device according to the invention before application to the connecting area; 10

Fig. 2a is a plan view of an attachment part of a fastening device according to the invention;

Fig. 2b is a view according to arrow II b in Fig. 2a; 15

Fig. 2c is a view according to the arrow II c in Fig. 2a;

Fig. 3a is a side view of a clamping jaw of a fastening device according to the invention; 20

Fig. 3b is a view according to the arrow III b in Fig. 3a;

Fig. 3c is a view according to the arrow III c in Fig. 3a;

Fig. 4 is a perspective view of an inventive

Fastening device in a fastening position;

Fig. 5 shows the side view according to Fig. 1 after application and fastening to the connection area;

Fig. 6 is a schematic side view of a

Connection area of an aluminum roof with a second embodiment of a fastening device according to the invention before application to the

connection area;

Fig. 7 is a view according to arrow VII in Fig. 6;

Fig. 8 is a view according to arrow VIII in Fig. 6;

Fig. 9 a view corresponding to Fig. 8 without attachment part. 5

Fig. 1 shows a schematic of an aluminum roof 1 which has two roof sections arranged next to one another and which are connected to one another in a connecting region 2. The connecting region 2 has a part 3, which is the upper part in Fig. 1, in which the two sections of the aluminum roof 1 are flanged together.

A fastening device 4 according to the invention can be applied to this flanged part 3. The fastening device 4 according to the invention comprises an attachment part 5 and two clamping jaws 6 attached to it.

The attachment part 5 can be seen in detail in Fig. 2. It is essentially plate-shaped and consists of a base plate 12 with a surrounding frame 7. The base plate 12 is rectangular in the embodiment shown, with contact surfaces 8 being formed on opposite end faces of this rectangle, in which fastening holes 9 are provided for fastening corresponding parts of the clamping jaws 6, which will be described in more detail below.

A hole 10 is provided approximately in the middle of the base plate 12 of the attachment part 5, which serves to accommodate a screw 25 designed as a countersunk head screw, which can be pushed through the hole from the side facing away from the clamping jaws 6. A molding 23 is formed around the hole 10, which has a recess for receiving the head of the countersunk head screw on the side of the base plate 12 facing away from the clamping jaws 6. The function of the screw 25 is explained in more detail below. In the illustrated embodiment, threaded holes 11 are provided in the corners of the base plate 12.

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intended for the attachment of roof components such as step grates or the like.

The clamping jaws 6 can be seen in detail in Fig. 3. The clamping jaws 6 have an essentially L-shaped configuration, with a leg designed as a fastening leg 16 and a support leg which, in the assembled state of the fastening device 4, extends essentially parallel to the base plate 12 of the attachment part 5. The leg of each of the clamping jaws 6 which is essentially parallel to the base plate 12 has two sections 15, 18 on its side facing the base plate 12, which, as can be seen in Fig. 3a, enclose an angle α with one another. The angle α can be, for example, 6°. The right outer section 18 of the clamping jaw 6 in Fig. 3a is placed at the factory on the contact surface 8 of the attachment part 5 and connected to the attachment part 5 by means of rivets that can protrude through the fastening holes 9 so that the section 18 rests flat on the contact surface 8. Due to the fact that the sections 15 and 18 enclose an angle α with each other, in this factory-preassembled first position of the clamping jaws 6, the section 15 will protrude flat from the base plate 12 starting from the section 18. Due to the approximately right-angled arrangement of the two L-legs of the clamping jaws 6, the flat contact of the sections 18 on the contact surfaces 8 ensures that the fastening legs 16 of the clamping jaws 6, starting from the base plate 12 of the attachment part 5, protrude slightly from one another over their length in such a way that the fastening device 4 can be applied to the part 3 of the connection area 2 (see Fig. D ).

For this purpose, the fastening legs 16 have engagement surfaces 13 in their end region, each of which has the shape of a cylinder jacket segment or hollow cylinder segment, the inner sides of these cylinder jacket segments corresponding to the respective opposite fastening leg 16 of the

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facing the other clamping jaw 6. The engagement surfaces 13 thus form a hollow cylinder which is clearly open on its side facing away from the attachment part 5 and which can be pushed with this opening in the factory-assembled position (see Fig. 1) onto the flanged part 3 of the connection area 2 of the aluminum roof 1. It can also be seen from Fig. 3a that a stiffening rib 17 is provided between the two L-legs of the clamping jaws 6.

On the side of the engagement surfaces 13 facing the attachment part 5, the fastening legs 16 of the clamping jaws 6 have movement-limiting projections 14, the function of which is explained in more detail below. Furthermore, in the area of the fastening legs 16 adjacent to the attachment part 5, a support surface 19 for a nut 24 is provided. In this support surface 19, a through hole 20 is provided through which the screw 25 can reach. The nut 24 shown in Fig. 1 is designed as a square nut and is held in a rotationally fixed manner between the two clamping jaws 6. As a result, the support surface 19 of the fastening legs 16 can be pulled in the direction of the attachment part 5 by screwing in the screw 25 from the side of the base plate 12 facing away from the clamping jaws 6. This causes the two fastening legs 16 to move towards each other, so that in particular the contact surfaces 13 move towards each other and enclose the flanged part 3 of the connection area 2. This results in a second position of the clamping jaws 6, which serves to fasten the fastening device 4 to the connection area 2. The end position of this movement towards each other of the fastening legs 16 is reached when the two movement-limiting projections 14, as can be seen from Fig. 4 and Fig. 5, rest against each other. In this way, it is ensured that a predeterminable clamping force is not exceeded, so that the flanged part 3 of the connection area 2 is not damaged.

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From Fig. 3b it can be seen that a fastening hole is provided in the section 18 through which the rivets can reach, which connect the lateral contact surfaces 8 of the attachment part 5 to the sections 18 through the fastening holes. Furthermore, from Fig. 3b a contact recess 22 can be seen in the section 15 facing the base plate 12, which can accommodate the formation 23 on the base plate 12.

A second embodiment of a fastening device according to the invention can be seen from Fig. 6 to Fig. 9. Fig. 6 schematically shows an aluminum roof 26 which has two roof sections arranged next to one another and which are connected to one another in a connecting region 27. The connecting region 27 has an upper part 28 in Fig. 6 in which the two sections of the aluminum roof 26 are connected to one another in a form-fitting manner.

The second embodiment of a fastening device 29 according to the invention shown in Fig. 6 to Fig. 9 can be applied to this upper part 28, in which roof sections are connected to one another. This fastening device 29 comprises an attachment part 30 and a clamping jaw unit 31 with two clamping jaws 32.

At the factory, the clamping jaw unit 31 can be attached to the attachment part 30 in the state shown in Fig. 6.

The attachment part 30 is simpler in construction than the attachment part 5 of the first embodiment. In particular, it can be seen from Fig. 7 that the attachment part 30 has a U-shaped cross-section with two U-legs that protrude a little way upwards in Fig. 7. The connecting surface between the two U-legs is, as can be seen from Fig. 8, essentially rectangular. In this base area of the attachment part 30, an essentially central bore 33 is arranged, through which

a screw 34 can be passed through it, which serves to fasten the clamping jaw unit 31. The screw 34 can also be designed as a countersunk head screw and, in the embodiment shown, has a hexagon socket for the engagement of a corresponding tool. The bore 33 can also have a recess for the head of the countersunk head screw.

The base of the attachment part 3 0 also has two holes 35 for attaching roof components. In contrast to the first embodiment, these holes are not designed as threaded holes. Rather, nuts 3 7 are held in pockets 36 aligned with these holes on the outside of the clamping jaws 32, into which nuts corresponding attachment screws can be screwed for attaching roof components.

The clamping jaws 32 are constructed in a similar way to the clamping jaws 6. They also have a support leg 38 and a fastening leg 39, which are also arranged in a substantially L-shape to one another, so that the support leg runs approximately parallel to the plane of the attachment part 30, whereas the fastening leg 39 extends essentially perpendicularly away from the attachment part 30. In the attached state, the support leg 36 extends essentially parallel to the base area of the attachment part 30. The support legs 38 of the two clamping jaws 32 each have outer sections 40, i.e. facing away from the connection area of the two clamping jaws 32, which rest on the base area of the attachment part 30 in the first position pre-assembled at the factory. These sections 40 can essentially be the outer edge area of the support legs 38. The support of these outer sections 40 on the base of the attachment part 30 is shown in Fig. 6. The support legs 38 also have sections 41 which are spaced from the base of the attachment part 30 in the factory-preassembled first position of the clamping jaws 32. In the illustrated

In the exemplary embodiment, these spaced-apart sections 41 can be the largest part of the surface of the support legs 38 facing the attachment part 30. This is also evident from Fig. 6, in which it is clear that the support legs 38 rest on the base surface of the attachment part 30 only in their outer edge regions and are otherwise spaced from this base surface.

In the adjacent area of the support legs 38 of the clamping jaws 32, the clamping jaws 32 are connected to one another by means of two connecting webs 42, each of which has a predetermined breaking point 43 in its center. In the embodiment shown, this predetermined breaking point 43 is formed by an incision in the connecting webs 42.

In the middle between the two externally extending connecting webs 42 there is a recess in the support legs 38 through which a spring tongue 44 connects the two support legs 38 to one another (see Fig. 9). The spring tongue 44 can be made of stainless steel, for example. The spring tongue 44 has a hole 45 in the middle through which the screw 34 can pass. A square nut 46 can rest on the spring tongue 44 on the side facing away from the attachment part 30, into which the screw 34 can be screwed. The square nut 46 can be held in a rotationally fixed manner between the support legs 38 of the clamping jaws 32 in a similar way to the square nut 24. As a result, as in the first embodiment, by screwing in the screw 34 from the side of the base surface of the attachment part 30 facing away from the clamping jaws 32, the support surface of the spring tongue 44 can be pulled in the direction of the attachment part 30. The spring tongue 44 then also pulls the middle, spaced-apart sections 41 of the support legs 38 in the direction of the attachment part 30, so that the second position, namely the fastening position, is achieved.

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The fastening legs 39 of the second embodiment of the fastening device 29 according to the invention are also somewhat simpler in shape. They have engagement surfaces 47 at their ends facing away from the support legs 39, which are formed by sections arranged at the end of the fastening legs 39 that protrude inwards, in particular at an angle of 90°. These two claw-shaped end sections with the engagement surfaces 47 are moved towards each other by screwing the screw 34 into the nut 46.

From Fig. 9 it can also be seen that a hole 48 is provided in each of the support legs 38. This hole 48 is aligned with the corresponding holes 35 for the attachment of roof components in the base area of the attachment part 30. The holes 35 and 48 are also aligned with the nuts 37 accommodated in the pockets 36, so that 8 screws can be screwed into the nuts 37 through the holes 35, 4.

By screwing the screw 34 into the nut 46, the spring tongue 44 and thus the middle sections 41 of the support legs 38 are moved towards the attachment part 30. At the same time, at a certain point in this movement, the connecting webs 42 will break open at the predetermined breaking points 43, so that the support legs 36 are essentially only connected to one another by the spring tongue 44. This spring tongue creates an easily deformable connection between the two support legs 38.

The clamping jaw unit 38 can in particular be designed as an aluminum cast part. The attachment part 30 can be made both as an aluminum cast part and as a part milled from steel or the like.

Claims (18)

1. Fastening device for fastening roof components to a connecting region ( 2 , 27 ) of two roof sections of an aluminum roof ( 1 , 26 ) arranged next to one another, wherein the fastening device ( 4 , 29 ) comprises an attachment part ( 5 , 30 ) for attaching roof components and two clamping jaws ( 6 , 32 ) connected to the attachment part and lying opposite one another, which can be moved towards one another from a first position in which the fastening device ( 4 , 29 ) can be applied to the connecting region ( 2 , 27 ) into a second position in which the clamping jaws ( 6 , 32 ) in the state of the fastening device ( 4 , 29 ) applied to the connecting region ( 2 , 27 ) hold the connecting region ( 2 , 27 ) between them and are pressed against it and/or a part ( 3 , 28 ) of the connecting region ( 2 , 27 ) in such a way that the fastening device ( 4 , 29 ) is fastened to the connecting region ( 2 , 27 ), characterized in that at least one of the clamping jaws ( 6 , 32 ) has at least two sections ( 15 , 18 , 40 , 41 ) on its side facing the attachment part ( 5 , 30 ), of which the outer section ( 18 , 40 ) facing away from the other clamping jaw ( 6 , 32 ) is fixed at least partially against the attachment part ( 5 , 30 ) in the first position of the clamping jaws ( 6 , 32 ), whereas the at least one second section ( 15 , 41 ) in the first position of the clamping jaws ( 6 , 32 ) is at least partially not against the Attachment part ( 5 , 30 ), and wherein the clamping jaws ( 6 , 32 ) can be transferred into the second position by moving the at least one second section ( 15 , 41 ) of at least one of the clamping jaws ( 6 , 32 ) towards the attachment part ( 5 , 30 ). 2. Fastening device according to claim 1, characterized in that each of the clamping jaws ( 6 , 32 ) has two sections ( 15 , 18 , 40 , 41 ), wherein the clamping jaws ( 6 , 32 ) can be transferred into the second position by moving the section ( 15 , 41 ) facing the adjacent clamping jaw ( 6 , 32 ) in the direction of the attachment part ( 5 , 30 ). 3. Fastening device according to claim 1, characterized in that the two sections ( 15 , 18 ) of the sides of the at least one clamping jaw ( 6 ) facing the attachment part ( 5 ) are flat and enclose an angle (α) with one another, such that in the first position of the clamping jaws, in which the respective outer section ( 18 ) of the at least one clamping jaw ( 6 ) at least partially rests on corresponding surfaces of the attachment part ( 5 ) and the respective inner section ( 15 ) facing the adjacent clamping jaw ( 6 ) protrudes from the connection region with the outer section ( 18 ) starting from the attachment part ( 5 ). 4. Fastening device according to claim 3, characterized in that the angle (α) between the two sections ( 15 , 18 ) of the clamping jaws ( 6 ) is between 2° and 20°, preferably between 4° and 10°, in particular about 6°. 5. Fastening device according to claim 1, characterized in that the inner section or sections ( 15 , 41 ) of the at least one clamping jaw ( 6 ) can be moved by screwing means in the direction of the attachment part ( 5 , 30 ). 6. Fastening device according to claim 5, characterized in that the screw means comprise a nut ( 24 , 46 ) designed as a square nut, which is received in a rotationally fixed manner between the two clamping jaws ( 6 , 32 ) in both the first and the second position of the clamping jaws ( 6 , 32 ), wherein the screw means further comprise a screw ( 25 , 34 ) which is accessible from the side of the attachment part ( 5 , 30 ) facing away from the clamping jaws ( 6 , 32 ) and can be screwed into the nut ( 24 , 46 ) for transferring the clamping jaws ( 6 , 32 ) from the first position to the second position. 7. Fastening device according to claim 1, characterized in that the attachment part ( 5 , 30 ) is essentially plate-shaped and has contact surfaces ( 8 ) for the mutually remote outer sections ( 18 , 40 ) of the clamping jaws ( 6 , 32 ) in two opposite edge regions. 8. Fastening device according to claim 7, characterized in that the mutually remote outer portions ( 18 ) of the clamping jaws ( 6 ) are riveted to the contact surfaces ( 8 ) in the first position of the clamping jaws. 9. Fastening device according to claim 7, characterized in that the essentially plate-shaped attachment part ( 5 , 30 ) has, on its side facing away from the clamping jaws ( 6 , 32 ), a recess for receiving the head of the screw ( 25 , 34 ), which is preferably designed as a countersunk head screw, around a bore ( 10 , 33 ) provided for the screw ( 25 , 34 ). 10. Fastening device according to claim 1, characterized in that the clamping jaws ( 6 , 32 ) are essentially L-shaped, with one leg which has the two sections ( 15 , 18 , 40 , 41 ) which at least partially rest against the attachment part ( 5 , 30 ), and with a leg which projects essentially perpendicularly away from this and the attachment part ( 5 , 30 ), which has in its end region engagement surfaces ( 13 , 47 ) for holding the connecting region ( 2 , 27 ) or the part ( 3 , 28 ) of the connecting region ( 2 , 27 ) of the aluminum roof ( 1 , 26 ). 11. Fastening device according to claim 10, characterized in that the engagement surfaces ( 13 ) have the shape of a hollow cylinder segment, wherein the inner sides of these hollow cylinder segments face each other and can accommodate the flanged part ( 3 ) of the connecting region ( 2 ) between them. 12. Fastening device according to claim 10, characterized in that on the leg of the clamping jaws ( 6 ) projecting away from the attachment part ( 5 ) between the attachment part ( 5 ) and the engagement surfaces ( 13 ) facing movement limiting projections ( 14 ) are attached, which in the second position abut against one another in order to limit the movement of the clamping jaws ( 6 ) towards one another in accordance with a predetermined clamping force. 13. Fastening device according to claim 1, characterized in that the fastening device ( 29 ) comprises a clamping jaw unit ( 31 ) in which the two clamping jaws ( 32 ) are connected to one another. 14. Fastening device according to claim 13, characterized in that the two clamping jaws ( 32 ) are connected to one another via two connecting webs ( 42 ) which have a predetermined breaking point ( 43 ). 15. Fastening device according to claim 13, characterized in that the two clamping jaws ( 32 ) are connected to one another via a spring tongue ( 44 ) which has a bore ( 45 ) for the passage of the screw ( 34 ). 16. Fastening device according to claim 13, characterized in that nuts ( 37 ) are held in the clamping jaws ( 32 ), which are aligned with bores ( 35 ) in the attachment part ( 30 ), wherein screws for attaching roof components can be screwed into the nuts ( 37 ) through these bores ( 35 ). 17. Fastening device according to claim 15, characterized in that the clamping jaw unit ( 31 ) and the attachment part ( 30 ) are connected to one another in the first position via the screw ( 34 ) and a square nut ( 46 ) resting on the spring tongue ( 44 ). 18. Fastening device according to claim 1, characterized in that the fastening device ( 4 ) is essentially designed as an aluminum cast part.