EP0237634B1 - Device for anchoring rear-ventilated facade panels to a building - Google Patents

Abstract

A bracket (2) can be fastened to a wall (1) in such a way that a cantilever arm (3) is pivotable thereon about a vertical pivot axis (5). A screw bolt (4) (horizontal in the mounted condition of the bracket) holds the bracket (2) and the cantilever arm (3) together. By rotating the screw bolt (4), which is axially retained on the bracket (2) and passes through the cantilever arm (3) in a threaded bore, the mutual pivot position of bracket (2) and cantilever arm (3) can be continuously adjusted in a limited manner. This makes it possible simply to adjust the inclination of the cantilever arm to the wall (1) such that the resultant of the compressive forces acting on the facade panels (7) is perpendicular to the wall (1).

Description

The invention relates to a device according to the preamble of claim 1.

Ventilated facade cladding is important both for new buildings and for the renovation of old buildings. It can be combined with the advantages of an external insulation protected by the curtain wall with free steam extraction.

The device with which the facade panels are attached to the building, usually on a wall or on another supporting part of the building, should have sufficient adjustability to avoid jamming, be load-resistant, meet norms and standards and also be economically advantageous .

It is required that a load on the facade panels directed towards the building (i.e. horizontally) is transferred vertically to the building, which means that the resultant running along the cantilever attacks the building as close as possible to the fastening center assumed on the surface of the building.

This condition cannot be met in all those devices in which a pivot axis between the cantilever arm and console or within the console or within the cantilever arm is usually located away from the fastening center due to the construction or by adjusting the distance. Such devices are set out, for example, in:
DE-PS 12 75 754, DE-OS 17 59 152, DE-OS 19 11 070, DE-OS 20 04 978, DE-OS 22 46 888, DE-OS 23 64 370, DE-GM 76 09 060, AT -PS 354 690, CH-PS 627 810, EP-OS 0 065 296.

In the device according to DE-PS 32 12 849, the resultant mentioned in the building (the wall) goes through an extension of the fastening center that is vertical to the wall and is therefore within the tolerable deviation range, without which nothing works on the building anyway. But the console and the cantilever arm can only be fixed in the set position by means of additional measures and can finally be connected to one another. As such measure, not unproblematic actions are mentioned on the building, such as the bending of the connecting parts, or their additional connection by drilling screws and rivets.

The invention has for its object to avoid the disadvantages of the known devices. A device of the type mentioned at the outset should be created which has sufficient and simple adjustability, simple assembly and mechanical resistance and is economically advantageous.

To achieve this object, the device defined in claim 1 is proposed.

The screw bolt holds the bracket and the cantilever arm together and also allows the mutual pivoting of these parts to be self-locking. So you don't need additional fixatives. After attaching the bracket together with the cantilever preassembled thereon, it is possible to compensate for deviations in the cantilever pivot position caused by construction tolerances by simply turning the screw. This can even happen if the rails for plate fastening are already installed and their mutual distance regulation seems necessary. This is possible even during panel mounting. You don't have to loosen or even loosen connections, as is otherwise the case.

Because, according to a preferred embodiment of the invention, the pivot axis is very close to the stop surface and, under certain conditions, even in the stop surface itself or behind it, with the bolt being further away from the stop surface than the swivel axis, power transmission is possible vertically to the general plane of a wall, even if the console should not lie in this plane due to local unevenness .

It is also preferably possible to take into account the differences in distance from the unevenness of the building to the facade panels to be arranged in one plane. A lockable sliding connection is preferably used between the cantilever arm and an extension (which can be part of a fastening rail for attaching the facade panels). If the sliding connection is preferably further away from the abutment surface of the bracket than the screw bolt, a length adjustment to the direction of the power transmission to the structure has no influence.

The extension relative to the cantilever arm can preferably be pivoted in a plane parallel to said pivot axis when the sliding connection is released, in the region of the sliding connection itself; the swivel position can be fixed by tightening the sliding joint. This is possible in practically all stages of assembly without influencing the swivel position around the swivel axis between the cantilever arm and the bracket.

An embodiment is preferred in which two legs protrude on the side of the console facing away from the stop surface, between which the pivot axis and the cantilever arm are arranged. The screw bolt passes through both legs in a threadless opening and runs in a threaded hole in the cantilever arm, being axially immovable but rotatable on the legs. This is a mechanically safe and easy connection between console and cantilever with easy self-locking adjustability of the swivel range.

The axial support of the screw bolt with respect to the two legs can be provided on the one hand by its head and on the other hand by a nut secured against rotation on it. It is sufficient if the nut is designed to be self-locking if the force to turn the nut on the screw bolt is greater than the force required to turn the screw bolt. Then the connection can be released at the bolt, if this would be desirable in exceptional cases on the building. If such a releasability is not targeted, the nut can be “glued”, riveted or even replaced by a rivet head on the bolt.

If you want to manufacture the console as a casting despite some effort, you can cast the legs together in the area of the free leg ends, which can bring static advantages. In the cast version, the fastening openings (for the passage of fastening screws, for screwing the bracket to the structure) can also be arranged inexpensively at your own discretion.

Consoles can be manufactured very cheaply by cutting off an appropriately designed extruded profile. Then it is advantageous to connect the two legs only in the vicinity of the pivot axis.

In the simplest form of training, one end of the cantilever arm sits in a quasi-cutting manner in a bearing point arranged more or less exactly in the pivot axis between the legs of the console. As a result, the pivot axis can be moved very close to the stop surface without the stop surface needing bulges on the wall side.

It is sometimes more advantageous if, on the side facing the screw bolt, there is between the legs a surface that surrounds the pivot axis by more than 180 degrees a gap for the passage of the cantilever bearing is provided, in which pivot bearing a bearing body formed on the corresponding end of the cantilever arm is pivotally seated. In this way, smaller surface pressures can be achieved in the warehouse and the cantilever can be guided even better. In order to be able to arrange the swivel axis as close as possible to the stop surface, it is advantageous if it is arranged eccentrically in the bearing. Either way, it is also advantageous if the bearing body is guided both on a bearing base closer to the stop surface of the bracket and on a bearing cover formed on both sides of the gap.

When the bracket is manufactured in one piece in the manner just described, it is advantageous to arrange one of two fastening openings (for the passage of screws, for screwing the bracket onto the structure) in a lateral extension of the profile next to each of the legs.

In a further preferred two-piece manufacture of the console, it can be put together from two different sections of two different extruded profiles and locked together by deformation. The one basic profile can be C-shaped in section and have the two fastening openings for the passage of fastening screws, by means of which the entire bracket can be screwed to the structure. The other profile can serve as a cantilever beam and have the two legs. It can be inserted between the fastening openings in the C-profile and fixed or locked in place by means of deformations. It offers great stability at extrusion costs.

In all of the cases described, a very precise and yet easily mountable and adjustable device according to the invention can be created with little effort.

The invention is discussed below with reference to the purely schematic drawing, for example, where only the best possible clarity was decisive. The shape could e.g. be designed differently from the point of view of saving material.

• Fig. 1 einen horizontalen Schnitt durch ein Fragment einer an einer Wand montierten Vorrichtung, mit in Draufsicht dargestellter erster Ausführungsform der Konsole, samt des darin gehalterten Kragarms, und im Schnitt dargestellter, die Verlängerung des Kragarms aufweisender, abgebrochen dargestellter Tragschiene für die (geschnitten und gebrochen angedeuteten) Fassadenplatten, wobei auf die Darstellung von Klammern, welche die Fassadenplatten an der Tragschiene haltern, verzichtet wurde),
• Fig. 2 ein gegenüber Fig. 1 im Massstab veränderte schaubildliche Darstellung der Konsole in ihrer in Fig. 1 enthaltenen ersten Ausführungsform, ohne Schraubbolzen, aber mit einem Fragment des zugehörigen Kragarms (siehe auch die nachstehende Bemerkung zur Ueberweisungszahl 2),
• Fig. 3 einen zur Papierebene der Fig. 1 parallelen, im am Bauwerk montierten Zustand der Konsole horizontal verlaufenden, auf der Höhe des Schraubbolzens geführten Schnitt durch die in Fig. 1 enthaltene Konsole der ersten Ausführungsform, mit Fragmenten des zugehörigen Kragarms,
• Fig. 4 ein der Fig. 2 ähnliches Schaubild einer zweiten Ausführungsform der Konsole und eines Fragments des zugehörigen Kragarms,
  und
• Fig. 5 einen der Fig. 3 ähnlichen Schnitt durch die zweite Ausführungsform der Konsole mit Fragmenten des zugehörigen Kragarms.

The drawing shows:

• Fig. 1 shows a horizontal section through a fragment of a wall-mounted device, with a first embodiment of the console shown in plan view, together with the cantilever arm held therein, and in section, the extension of the cantilever arm, shown broken off for the (cut and facade panels indicated in broken lines, with the illustration of clips which hold the facade panels on the mounting rail being omitted),
• FIG. 2 shows a diagrammatic representation of the console, modified in comparison to FIG. 1, in its first embodiment contained in FIG. 1, without a screw bolt, but with a fragment of the associated cantilever arm (see also the following comment on the transfer number 2),
• Fig. 3 is a parallel to the paper plane of Fig. 1, in the assembled state of the bracket horizontally running, made at the level of the screw bolt through the console shown in Fig. 1 of the first Embodiment, with fragments of the associated cantilever,
• 4 shows a diagram similar to FIG. 2 of a second embodiment of the bracket and a fragment of the associated cantilever,
  and
• 5 a section similar to FIG. 3 through the second embodiment of the console with fragments of the associated cantilever.

1 to 3 show:
1 wall (building).
10 dowel holes in 1.
11 dowels in 10.
12 mounting screws in 11.
2 console, first embodiment, according to FIGS. 1 to 3; this preferably extruded, one-piece embodiment is shown in full in FIGS. 1 to 3; differently running lines of a cast variant are only indicated in FIG. 2 by dash-double-dotted lines.
20 stop surface of 2.
21 legs of 2.
210 holes in 2 for passage of 4; these holes are elongated to 21 and threadless.
211 ends of 21.
22 extensions for 220 in the preferably extruded embodiment.
220 mounting holes in 22 for the passage of 12.
23 pivot bearings for 3; practically located in 5 and as close as possible to or in 20.
24 compounds of 21; they are only shown in dash-double-dotted lines in FIG. 2 in the preferably cast variant.
25 extensions for 250; they are only dash-double-dotted in FIG. 2, shown in the cast version, only in FIG. 1, in the preferably cast variant,
250 fastening openings for the passage of fastening screws; they are shown in dash-double-dotted lines only in the preferably cast variant in FIG. 2.
3 cantilever arm (preferably extruded from light metal),
30 swivel bearing end of 3,
31 threaded hole in 3 for engagement of 4.
32 sliding joint between 3 and 6.
4 bolts.
40 head of 4.
41 mother on 4; it is secured against rotation.
5 swivel axis.
50 level across to 5.
6 extension (preferably extruded from light metal); it is provided as a rib on the mounting rail for attaching 7; the clips used to attach 7 to 6 are not shown.
7 facade panel.
R Result of the compressive forces acting on the facade cladding.

Dowel holes 10 with dowels 11 are provided in a wall 1. Fastening screws 12 extending transversely to the pivot axis 5 pass through fastening openings 220 in extensions 22 of a bracket 2 and fasten them to the wall 1 (FIG. 1).

While these extensions 22 and their fastening openings 220 are arranged in a plane lying transversely to the pivot axis 5, which is indicated in FIG. 2, the extensions 25 and their fastening openings 250 are in a parallel in a variant indicated only by double-dotted lines in FIG. 2 to the pivot axis 5 extending plane (not shown). In this dash-double-dotted variant, the legs 21 are connected by connections 24 reaching to the leg ends 210, which makes the whole more rigid.

In both cases, the console can advantageously consist of light metal, the extended embodiment being extruded and the dash-double-dotted pourable.

In the case of a console 2 mounted according to FIG. 1, the abutment surface 20 lies against the wall 1. The console 2 has, between two legs 21, a pivot bearing 23 which is concentric with the vertical pivot axis 5 and in which the pivot bearing end 30 of the console 3 is mounted.

Each leg 21 has a non-threaded through opening 210 for the screw bolt 4 running in a threaded bore 31 of the cantilever arm, which is axially supported on one leg 21 with its head 40 and on the other with the nut 41 secured on it on the outside.

If, due to unevenness in the wall 1 (not shown in the drawing), the console 2 would be crooked, the cantilever arm 3 in the pivot bearing 23 can be pivoted about the vertical pivot axis 5 by rotating the screw bolt 4, thereby making the inclined position of the console 2 can compensate.

Because the pivot bearing 23 and thus the pivot axis 5 are very close to the stop surface and thus to the wall 1, the course of the resultant R of the pressure forces acting on the facade panels 7 can always be derived practically vertically to the wall 1.

The sliding joint 32 between the cantilever arm 3 and the extension 6 connected to a fastening rail offers other adjustment options, where the distance of the facade panels 7 from the wall 1 and a certain inclination adjustment about a horizontal axis can be achieved.

As a result, a perfect, yet simple regulation on the construction is possible in an economically advantageous manner.

4 and 5 show:
2000 console, second embodiment, according to FIGS. 3 + 4; consisting of two parts 2001 and 2002.
2001 basic body from 2000; C-shaped in section and forming a holding groove narrowed at its opening as a holding element for the holder from 2002.
2020 abutment area from 2000; trained at 2001.
2220 fastening openings in 2001 for the passage of the fastening screws, not shown here, which would be arranged analogously to the screws 12 in FIG. 1.
2222 holding groove in 2001, which is narrowed at its (not designated) opening, so that the T-shaped holding end
2223 from 2002 fits into it.
2002 cantilever bracket from 2000; inserted in Halteut from 2001. 2223 stopped in 2002; for intervention in 2222.
2021 legs from 2000; trained at 2002.
2210 holes in 2021 for passage from 2004; these holes are elongated by 2021 and threadless.
2023 pivot bearing for 2030 from 2003; Eccentric to 2005, so 2005 is as close to 2020 as possible.
2123 gap in 2023.
2124 storage area from 2023.
2124 bearing blanket from 2023, both sides from 2123.
2003 cantilever.
2030 bearing body from 2003.
2031 threaded hole in 2003.
2004 bolts.
2040 head from 2004.
2041 mother on 2004; it is secured against rotation.
2005 swivel axis.

The console 2000 of the second embodiment shown in FIGS. 4 and 5 could, as is shown for the console 2 of the first embodiment in FIG. 1, on a wall with fastening screws running transversely to the pivot axis 2005, which fastening openings 2220 in the base body 2001 would be secured.

The console 2000 consists of two sections of extruded profiles, namely the main body 2001 and the cantilever bracket 2002.

The base body 2001 is essentially C-shaped and has a longitudinal holding groove 2222, into which the holding end 2223 of the cantilever holder 2002 is inserted. So that the two parts 2001 and 2002 no longer shift from one another, it is sufficient to apply corresponding (not shown) deformations to the base body 2001, which could have the form of dents, notches, pawls and the like. This console 2000 can also advantageously consist of light metal.

When the console 2000 is installed, the stop surface 2020 lies on the wall. The console 2000 has two legs 2021 on the cantilever bracket, between which the pivot axis 2005, which is vertical in the assembled state, runs eccentrically in the pivot bearing 2023, which has a gap 2123 on its side facing the bolt 2004. The protrudes through this gap 2123 Cantilever arm 2003 in the pivot bearing 2023, in which it engages with its bearing body 2030. The bearing body 2030 is guided neatly between the bearing base 2124 and the bearing cover 2125.

Each leg 2021 has a threadless through opening 2210 for the screw bolt 2004 running in a threaded bore 2031 of the cantilever arm 2003, which is axially supported on one leg 2021 with its head 2040 and on the other with the nut 2041 secured on it on the outside.

If, due to unevenness in the wall (not shown in the drawing), the console 2000 would be at an angle, you can turn the cantilever arm 2003 in the pivot bearing 2023 about the vertical pivot axis 2005 in the assembled state by turning the screw bolt 2004, thereby reducing the inclined position the console 2000 can compensate.

Because the swivel bearing 2023 and thus the swivel axis 2005 are very close to the stop surface 2020 and thus in the assembled state at the wall, the course of the resultant (not shown in FIGS. 4 and 5) of the compressive forces acting on the facade panels can always be practically vertical be derived to the wall.

The means discussed with regard to FIG. 1 also offer other setting options here.

As a result, even in the embodiment of FIGS. 4 and 5, a perfect, yet simple regulation on the construction is possible in an economically advantageous manner.

Claims (9)

1. Device for anchoring rear-ventilated facade panels (7) to a building (1), comprising a bracket (2 ; 2000), which can be anchored to the building (1), and a cantilever (3 ; 2003) projecting from the bracket (2 ; 2000) in such a way as to be pivotable to a limited extent about a pivot axis (5 ; 2005), to which cantilever (3 ; 2003) the facade panels (7) can be connected while evening out the distance from the building (1), in which arrangement, in the assembled state on the building (1), a stop surface (20 ; 2020) of the bracket (2 ; 2000) and the pivot axis (5 ; 2005) are approximately perpendicular within the limits of the building tolerances, charac­terized in that the pivoted position of the cantilever (3 ; 2003) relative to the bracket (2 ; 2000) can be adjusted by means of a screw bolt (4 ; 2004) connecting the cantilever (3 ; 2003) and the bracket (2 ; 2000), which screw bolt (4 ; 2004) runs horizontally when the pivot axis (5 ; 2005) runs perpendicularly.

2. Device according to Claim 1, characterized in that the pivot axis (5 ; 2005) lies closer to the stop surface (20 ; 2020) of the bracket (2 ; 2000) than the screw bolt (4 ; 2004).

3. Device according to Claim 1 or 2, characterized in that the screw bolt (4 ; 2004) is provided between the pivot axis (5 ; 2005) and a lockable sliding connection (32) of the cantilever (3 ; 2003) with an extension (6), in which arrangement the extension (6), when the sliding connection (32 ; 2032) is released, can preferably be pivoted relative to the cantilever (3 ; 2003) in a plane (51) parallel to the pivot axis (5 ; 2005)

4. Device according to one of Claims 1 to 3, charac­terized in that two legs (21 ; 2021) project from the side of the bracket (2 ; 2000) remote from the stop surface (20 ; 2020), between which legs (21 ; 2021) the pivot axis (5 ; 2005) and the cantilever (3 ; 2003) are arranged, the screw bolt (4 ; 2004) passing through both legs (21 ; 2021), in one threadless hole (210 ; 2210) each, in a rotatable but axially non-displaceable manner and running in a rotatable manner in a threaded hole (31 ; 2031) of the cantilever (3 ; 2003).

5. Device according to one of Claims 1 to 4, charac­terized in that à pivot bearing (2023), surrounding the pivot axis (2005) by more than 180 angular degrees and having on its side facing the screw bolt (2004), a gap (2123) for the passage of the cantilever (2003), is provided between the legs (2021), in which pivot bearing (2023) a bearing body (2030) formed at the corresponding end of the cantilever (2003) sits in such a way as to be pivotable about the pivot axis (2005).

6. Device according to Claim 5, characterized in that the pivot axis (2005) is arranged eccentrically in the area of the pivot bearing (2023) situated closer to the stop surface (2020).

7. Device according to either of Claims 5 and 6, characterized in that the bearing body (2030) is guided on both a bearing root (2124) situated closer to the stop surface (2020) and a bearing hood (2125) formed on both sides of the gap (2123).

8. Device according to one of Claims 1 to 7, charac­terized in that the bracket (2 ; 2000) has fixing aper­tures (220 ; 250 ; 2220), arranged on two sides remote from one another, for the passage of fixing screws (12).

9. Device according to Claim 8, characterized in that the stop surface (2020), the fixing apertures (2220) and a retaining member (2222), preferably designed as a retaining groove having a narrowed opening, are provided on a basic body (2001) of the bracket (2000), and in that a cantilever mounting (2002) having the two legs (2021) is mounted, preferably pushed on, on the retaining member (2222).

Images