EP1126099A2 - Fastening device for panel-like façade elements - Google Patents

Abstract

The fastening for building fade panels has a rail (1) fixed to the building wall and having a groove (1). A two part (8,9) fastening is slidably adjustable in the rail, with engagement faces (18,20) for the upper and lower fade panels (28,27). A screw (15) connects the fastening to the rail and a second screw connects the inner and outer fastening sections.

Description

The invention relates to a fastening device for plate-shaped Facade elements of a preferably ventilated facade cladding.

Such a fastening device is known from EP 0 608 443 B1 and EP 0 651 113 A1 known. On the building wall of the building to be clad short profile rails are attached, to which are attached by means of a multi-part Fastening the individual facade elements of the rear-ventilated Fasten the facade cladding in the area of its upper or lower edges to let. The fasteners are designed and arranged so that they both the one below and the one above Hold facade element, for example against wind forces. Furthermore takes over the fastener the bearing force, d. H. primarily weight of the facade element arranged above, which is why Fastener a corresponding footprint for the lower one Plate edge is formed.

The lateral fixation of the fasteners is due to the position of the Rail specified on the building wall, since the rail only with one narrow, vertical groove is provided, which is not worth mentioning lateral play allows. But also the height of the fastener is in the Fastening devices according to the prior art, given by Holes of the fastener are put through two self-tapping screws, the one with its thread in corresponding holes in the rail section intervention. The two self-tapping screws are used to temporarily fix the Fastener. The subsequent backup, in particular against the The weight of the overlying facade element is carried out by means of a further, significantly stronger screw connection. This intervenes a head piece the central groove of the rail piece and penetrates both parts of the fastener, thereby bracing both the Parts of the fastener with each other, as well as a resilient, both the connection to the wind loads as well as the weight loads Rail piece is created.

With regard to the assembly properties are the known Fasteners in need of improvement. The preliminary assembly by Tightening the two self-tapping screws penetrating into the rail leads to that the two-part fastener is essentially already final position. A height adjustment, for example compared to the upper one Edge of the facade element arranged below is not possible. Is too after the two self-tapping screws have been inserted Take out or just slightly tilt out the one below Facade element no longer possible, which is the assembly of the Facade cladding also difficult.

The invention has for its object to provide a fastening device for plate-shaped facade elements of a facade cladding with improved mounting options.

• einer an der Gebäudewand befestigten, an ihrer Vorderseite eine hinterschnittene Nut bildenden Schiene,
• einem auf die Schiene aufgesetzten und stufenlos entlang der Schiene verschiebbaren, aus einem Innenteil und einem Außenteil zusammengesetzten Befestigungselement mit Anlageflächen für das oberhalb sowie das unterhalb angeordnete Fassadenelement sowie einer Aufstandsfläche für das oberhalb angeordnete Fassadenelement,
• einer ersten Schraubverbindung, welche das Befestigungselement mit der Schiene verbindet,
• einer zweiten Schraubverbindung, mittels welcher sich das Außenteil gegen das Innenteil des Befestigungselements anziehen läßt,
• wobei die beiden Schraubverbindungen übereinander angeordnet sind.

To solve this task, a fastening device for panel-shaped facade elements with a preferably ventilated facade cladding is proposed

• a rail fastened to the building wall and forming an undercut groove on its front,
• a fastening element which is placed on the rail and can be moved continuously along the rail and is composed of an inner part and an outer part, with contact surfaces for the facade element arranged above and below and a contact surface for the facade element arranged above,
• a first screw connection which connects the fastening element to the rail,
• a second screw connection, by means of which the outer part can be tightened against the inner part of the fastening element,
• the two screw connections being arranged one above the other.

In a preferred embodiment of the fastening device is the first Screw connection through the facade element arranged above covered. An embodiment is also preferred in which the Fastening element by means of the first screw connection in Rail longitudinal direction is infinitely attachable to the rail, so the To enable height adjustment.

According to a further embodiment, the second screw connection extends through both the outer part and the inner part of the fastener, and it is provided at its rear end with a head piece with which the Back screw connection supported on the undercut groove of the rail. In this case, it is also advantageous if the front contact surfaces for the Facade elements on the back of the outer part of the fastener are formed, the head piece of the second screw connection cannot be rotated in the rail sits, and the tightening means of the second screw connection the front of the outer part. The suit is still there achievable if both the one above and the one below Facade element of the facade cladding is mounted. So it can be done at any time Even after the facade cladding has been installed, check whether it is preferably with usual hexagon wrench flats with the right Tightening torque were tightened. However, the first screw connection is which only the provisional adjustment and fixing of the fastener no longer serves on the rail after installation of the facade elements accessible and, in the case of opaque facade elements, no more visible.

In the context of the invention, therefore, the first screw connection comes Task too, the fastener and preferably its inner part to be temporarily fixed against the wall-fixed rail. In this preliminary Fixation can e.g. B. be taken into account that to avoid Thermal stresses are placed between the top of the bottom Facade element and the fastening element a sufficient gap should be. Once this adjustment has been made, the first screw connection tightened and thus temporarily fixed the fastener.

Then the facade element to be arranged above is in the Fastener used, the fastener by attaching the Completed the outer part and finally the second screw connection dressed. This tightening takes place with a predetermined torque, and only in this way is that tensioning of the fastening element with the wall-fixed rail achieved, which for receiving and forwarding all Wind forces as well as weight forces are sufficient. Because the second Screw connection, which is in the same vertical plane as the first There is a screw connection, also accessible when the facade cladding is installed is the correct tightening torque of the second screw connection at any time check.

According to a preferred embodiment of the fastening device, there is Inner part of the fastener from one by multiple bending formed, one-piece sheet metal part, on which, if necessary, in the area of Contact surfaces and footprints made of soft, non-slip Material are attached.

The footprint for the facade element arranged above is preferably molded onto the one-piece molded inner part, for example in the form of a forward-facing, U-shaped bulge of the inner part.

With a further preferred embodiment it is proposed that the Rail-mounted head piece with two parallel ones attached to it Tongues through the groove of the rail into a recess on the Back of the inner part protrudes, and so inner part and head piece in Aligns longitudinal rail direction to each other. With this configuration, a Easier installation was achieved because the one arranged in the rail Headpiece not before or during the attachment of the second screw connection can slip out of the rail. Rather, the headpiece is the second Screw connection and inner part at any time in the longitudinal direction of the rails aligned.

Another preferred embodiment is characterized in that the Inner part, which is in the area of the second screw connection on the Front of the rail supports, with a protruding into the groove of the rail Tab is provided, and that the tab with the first screw connection is connected to the bottom of the rail. This configuration leads to a further simplification of assembly, since the function of the first Screw connection from the already existing screw connection of the Rail section on the building wall can be taken over. A So there is no additional screw connection, instead the first one takes over Screw connection both the fastening of the rail to the building wall, as well also the provisional connection of the fastener to the rail.

To reduce the number of parts required for facade assembly it is proposed that the tab of the inner part with a Rail longitudinal opening for the first screw connection is provided.

To derive the if necessary in the cavity between the Building wall and the glazing accumulating condensate is in accordance a further embodiment of the fastening device, a horizontal gap between the facade element below and the one above arranged, lying on the contact surface of the inner part Facade element proposed, with a drip tray from the Building wall extends into the horizontal gap. Preferably extends the drip tray is inclined downwards from the building wall into the Horizontal gap.

It is also proposed that the drip tray with a corner below Footprint for the facade element arranged above extends.

The assembly of the drip tray can be simplified by using the inner part by bending several times, a channel is formed which is directed towards the rail is open, and into which the drip plate protrudes with an outer edge.

Fig. 1

eine perspektivische Darstellung einer erfindungsgemäßen Befestigungsstelle vor der Montage des unterhalb sowie des oberhalb anzuordnenden Fassadenelementes;

Fig. 2

einen senkrechten Schnitt durch die Befestigungsstelle nach abgeschlossener Montage sowohl des unteren, als auch des oberen Fassadenelementes;

Fig. 3

eine der Fig. 1 entsprechende perspektivische Darstellung, jedoch mit einer gegenüber Fig. 1 geänderten Schraubverbindung;

Fig. 4

eine gegenüber Fig. 3 abgewandelte Ausführungsform der Befestigungsvorrichtung mit zusätzlich daran angebrachten Abtropfblechen und

Fig. 5

einen senkrechten Schnitt durch die Befestigungsvorrichtung nach Fig. 4 nach abgeschlossener Montage des unteren und des oberen Fassadenelementes sowie des Abtropfbleches.

Two exemplary embodiments of the fastening device according to the invention for plate-shaped facade elements are shown in the drawing, namely:

Fig. 1

a perspective view of an attachment point according to the invention before mounting the below and the facade element to be arranged above;

Fig. 2

a vertical section through the attachment point after assembly of both the lower and the upper facade element;

Fig. 3

a perspective view corresponding to Figure 1, but with a modified compared to Figure 1 screw connection.

Fig. 4

a modified embodiment of FIG. 3 of the fastening device with additional attached drip plates and

Fig. 5

a vertical section through the fastening device of FIG. 4 after completed assembly of the lower and upper facade element and the drip tray.

Fig. 1 shows a rail 1, which in vertical alignment on that Building wall is attached to which the ventilated facade are mounted should. The assembly of the rail 1 consisting of a short profile piece is carried out in the usual way by means of dowels, for which the bottom 2 of the rail piece with corresponding openings is provided. The cross section of the rail 1 is C-shaped with forward, d. H. opening facing away from the building wall. A centrally arranged groove 4 is therefore formed by the legs 3 of the rail limited, on both sides of which there are undercut areas 5. Widenings 6 of the groove allow the insertion of fastening screws larger head diameter.

A fastening element 7 can be placed on the rail 1 and is made up of an inner part 8 and an outer part 9 is composed. The inner part 8 is shaped like a U-profile, and is from the outside on the profile of the rail 1 can be put on, the legs 10 outside on the legs 3 of the rail abut, and the base plate 11 of the inner part on the front 12 of the rail 1 is present.

Formed in one piece on the inner part 8 is by bending twice 90 ° designed tab 13 with an elongated hole-like opening 14, which vertical, d. H. extends in the longitudinal direction of the rail. Is the inner part 8 of the Fastening element 7 placed on the rail 1, the tab 13 is on Bottom 2 of the rail 1. In this position, a first, in Fig. 1 only in The shape of the center line symbolizes screw connection 15 through opening 14 the tab 13 and a corresponding opening in the bottom 2, and in this way attach the inner part 8 to the rail 1. As a result of slot-like design of the opening 14, this attachment with Play compensation in the vertical direction, so that a height adjustment of the Inner part 8 on the rail 1 is possible.

An important function of the inner part 8 is the weight load of the to take over arranged facade element. With this Facade element can be z. B. a plate made of glass or coated or uncoated sheet steel. For this is on the Inner part 8 a widened, horizontal contact surface 16 is formed. The Footprint 16 is at right angles on the front of the base plate 11 of the Inner part 8. From a design point of view, the contact area 16 around the wall of a channel 17, which by bending the material of the multiple Inner part 8 is shaped. The channel 17 having a rectangular cross section is backwards, d. H. towards the rail 1, open and puts in constructively also a recess on the back of the inner part 8, on their meaning in connection with the second embodiment will be discussed later.

Advantageously, the inner part 8 can be made in one piece Manufacture the sheet metal part by bending it several times. This applies to all elements of the Inner part 8, d. H. not only the base plate 11 arranged on both sides Legs 10, but also for the tab formed by double bending 13 and the four-fold shaped U-shaped cross-section Channel 17. To support the edge of the facade elements are the vertical Contact surfaces 18 of the base plate 11 and the horizontal contact surfaces 16 covered with plates 19 made of a soft, non-slip material. The same thing applies to the corresponding contact surfaces 20 on the back of the outer part 9.

Fig. 1 also shows that inner part 8 and outer part 9 of the Fastening element are provided with mutually aligned bores 21, through which a second screw connection 22 can be inserted. The Bore in the inner part 8 is located centrally in the vertical Bottom surface 23 of the channel 17.

In the embodiment according to FIGS. 1 and 2, there is the second Screw connection 22 from a head piece 24 Threaded bolt 25, the inner part 8 and outer part 9 in the holes 21 penetrates, and on the outside a secured nut 26 can be screwed. The Nut 26 is shown in FIG. 2. Fig. 2 also shows that the Head piece 24 of the second screw connection 22 on the rear undercut groove 4 of the rail 1 supports, for which the head piece 24 is wider, than the width of the groove 4. The head piece 24 is preferably known per se Way secured against rotating in the groove 4 of the rail 1.

Fig. 2 shows the items described above after assembly including the facade element 27 arranged below and the arranged above, under its own weight on the contact surface 16 of the inner part 8 resting facade element 28. The individual Assembly steps are as follows:

By means of the first, the tab 13 penetrating screw 15, the Inner part 8 of the fastener temporarily fixed to the rail 1. Here is by appropriate height adjustment to ensure that between the Inner part 8 and the upper edge 29 of the lower facade element 27 a gap S. results in order to prevent later tension in the facade panel. After this the gap S is set correctly, the first screw connection 15 is tightened, with which the fastener is temporarily fixed. Then from above placed on the upper facade element 28, this being under his Own weight is supported on the contact surface 16. Then the outer part 9 put on and the second screw connection 22 after unscrewing the nut 26 attracted, whereby outer part 9, inner part 8 and rail 1 under The facade elements 27, 28 can be clamped together. The Tightening of the second screw connection 22 takes place with one specified tightening torque, since the second screw connection almost the total weight load of the facade element 27 arranged above has to wear. Since the nut 26 of the second screw connection 22 is clearly visible and can be reached from outside at any time, the correct tightening torque can also be reached check later at any time. In contrast, the is above in the same vertical plane as the first screwed connection Screw connection 15 no longer accessible, since the latter through the Facade element 28 is covered. However, this is not a disadvantage since the first Screw connection 15 at this time, no horizontal or vertical on the Fastener 7 absorbs loads more.

The embodiment according to FIG. 3 differs from that above described embodiment according to FIGS. 1 and 2 by another Design of the second screw connection 22. In this case, the head piece is 24 not rigidly provided with a threaded bolt, but the head piece 24 is after Kind of a nut provided with an internal thread 30. In this internal thread 30th can the outer part 9 and inner part 8 penetrating screw from the outside 31 screw in. The head piece 24 seated in the rail 1 has two on it attached, parallel tongues 32 provided. The tongues 32 protrude through the groove 4 of the rail into the rectangular shaped channel 17th of the inner part 8. In this way, the inner part 8 and the head piece 24 in The longitudinal direction of the rails is positively aligned with each other as soon as that Inner part 8 is placed on the rail 1. To the position of the head piece 24 in to define the rail 1 even better, can be found on the back of the Head piece 24 a compression spring 2 can be attached, which is against the bottom 2 of the Rail 1 supports.

In Figs. 4 and 5 is another embodiment of the invention Fastening device shown, which on the whole with the Embodiments described above matches. Add to that in the embodiment according to FIGS. 4 and 5 drip trays 33a, 33b on both sides of the fastening element 7. The drip plates 33a, 33b are used for Derivation of the in the cavity between the building wall and the Glazing of condensed water. Both drip plates 33a, 33b extend from the building wall, on which they z. B. attached by rivets 34 are up to a horizontal gap 35. The horizontal gap 35 extends between the abutting surfaces of the facade element 27 arranged below and the arranged above, lying on the contact surface 16 of the inner part 8 Facade element 28. The height of the horizontal gap 35 therefore depends on the Thickness of the shape of the inner part 8 from the inside of the one shown in FIGS. 1 and 3 shown channel 17 runs. Accordingly, each of the drip plates 33a protrudes 33b with an outer edge 36 integrally formed thereon as shown in FIGS. 1 and 3 shown channel 17. This leads to a positive fixation of the Outer edge 36 through the channel 17, so that the drip tray 33a, 33b also cannot lower down under load, and in particular there is no contact comes with the facade element 27 arranged below.

Fig. 5 shows that the drip plates inclined downwards from the Building wall into the horizontal gap between the two Facade elements run.

During assembly, the drip plates 33a, 33b abut with their edges 37 to the respective leg 10 of the inner part 8. At the same time, each extends Drip tray 33a, 33b with a corner up to the contact surface 16 for the each facade element arranged above.

The assembly of the drip plates is facilitated in that their outer edges 36 engage positively in the rearwardly open channel 17 of the inner part 8, whereby the drip plates are temporarily secured in their position before they then by means of the rivets 34 on the building wall itself or one Cladding of the building wall can be attached. The drip trays are from such a length that it extends horizontally and without interruption from one Fastening element 7 extend to the next fastening element.

Reference list

1

rail

2nd

ground

3rd

leg

4th

Groove

5

undercut area of the groove

6

Widening of the groove

7

Fastener

8th

inner part

9

Outer part

10th

leg

11

Base plate

12th

front

13

Tab

14

opening

15

first screw connection

16

Footprint

17th

channel

18th

Contact surface

19th

plate

20th

Contact surface

21

drilling

22

second screw connection

23

Floor area

24th

Headpiece

25th

Threaded bolt

26

mother

27

lower facade element

28

upper facade element

29

Top edge

30th

inner thread

31

screw

32

tongue

33a

Drip tray

33b

Drip tray

34

rivet

35

Horizontal gap

36

Outer edge

37

edge

s

gap

Claims (14)

Fastening device for plate-shaped facade elements with a preferably ventilated facade cladding a rail (1) fastened to the building wall and forming an undercut groove (4) on its front side (12), a fastening element (7) which is placed on the rail (1) and can be moved continuously along the rail (1) and is composed of an inner part (8) and an outer part (9), with contact surfaces (18, 20) for the facade element arranged above and below (28 or 27) and a footprint (16) for the facade element (28) arranged above, a first screw connection (15) which connects the fastening element (7) to the rail (1), a second screw connection (22), by means of which the outer part (9) can be tightened against the inner part (8) of the fastening element (7), the two screw connections (15, 22) being arranged one above the other. Fastening device according to claim 1, characterized in that the first screw connection (15) through the one arranged above Facade element (28) is covered. Fastening device according to claim 1 or claim 2, characterized characterized in that the fastening element (7) by means of the first Screw connection (15) continuously along the rail in the longitudinal direction of the rail (1) can be fastened. Fastening device according to one of the preceding claims, characterized in that the second screw connection (22) both Extends through the outer part (9) and the inner part (8) of the fastening element and is provided with a head piece (24) at its rear end which the screw connection (22) on the back of the undercut groove (4) supports the rail (1). Fastening device according to claim 4, characterized in that the front contact surfaces (20) for the facade elements (27, 28) on the Rear of the outer part (9) of the fastening element are formed, that the head piece (24) of the second screw connection (22) cannot be rotated in the rail (1) sits, and that the tightening means (26) of the second Screw connection (22) is supported on the front of the outer part (9). Fastening device according to one of the preceding claims, characterized in that the inner part (8) of the fastener from a one-piece sheet metal part formed by multiple bending exists on which, if necessary, in the area of the contact surfaces (18) and Footprints (16) plates (19) made of soft, non-slip material are attached. Fastening device according to claim 6, characterized in that the Footprint (16) for the facade element (28) arranged above the integrally molded inner part (8) is molded on. Fastening device according to claim 5, characterized in that the in the rail (1) seated head piece (24) with two attached, parallel tongues (32) through the groove (4) of the rail (1) protrudes into a recess on the back of the inner part (8), and so Inner part (8) and head piece (24) to each other in the longitudinal direction of the rail aligns. Fastening device according to one of the preceding claims, characterized in that the inner part (8), which is in the area of second screw connection (22) on the front (12) of the rail (1) supports, with a tab (13) protruding into the groove (4) of the rail is provided, and that the tab (13) via the first screw connection (15) is connected to the bottom (2) of the rail (1). Fastening device according to claim 9, characterized in that the Tab (13) of the inner part (8) with one in the longitudinal direction of the rail extending opening (14) for the first screw connection (15) is provided. Fastening device according to one of the preceding claims, characterized by a horizontal gap (35) between the one below arranged facade element (27) and the one arranged above the contact surface (16) of the inner part (8) of the facade element (28), a drip plate (33a, 33b) extending from the building wall into the Horizontal gap (35) extends. Fastening device according to claim 11, characterized in that the drip tray (33a, 33b) slopes downwards from the building wall to extends into the horizontal gap (35). Fastening device according to claim 11 or claim 12, characterized characterized in that the drip plate (33a, 33b) with a corner to under the footprint (16) for the one above Facade element (28) extends. Fastening device according to claim 13, characterized in that the inner part (8) is formed by multiple bending a channel (17) is open in the direction of the rail (1) and into which the drip plate (33a, 33b) protrudes with an outer edge (36).

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