EP0837198B1 - Fastening element for facades - Google Patents

Abstract

The component has a body (3) with a holder part (5) to receive a dowel screw for anchoring the component in a wall. A second part (6) rests on the holder part and a bolt (7) is displaceably located in the second part. The free end of the bolt has a lug (8) in the shape of a mandrel (8a) to secure a facade plate. The bolt is provided with a self-clamping, snap-fit device (10a), to releasably fix it in a determined position. The snap-fit device includes a statically arranged clamp spring, which secures the bolt to the component body. The bolt has a rough or ribbed surface. A guide is provided on the component body to fix the axis of the bolt, which may take the form of a double layering.

Description

The invention relates to a facade fastening element according to the preamble of claim 1.

Such fasteners are used to Insulation or facing facade panels on the To be attached to the outside of buildings. These fasteners are supposed to be a load-bearing connection between the building's exterior surface and facade panel result.

Façade panels are fastened to building surfaces using a wide variety of fasteners. In GB-A-2 142 952 there is a bolt-nut combination disclosed in an attached to the facade panel Profile engages, with a provided in the profile slot-like recess vertical adjustment takes place; the facade panel is fixed horizontally on the nut on the one hand and on the thread of the Bolzens provided elastic jacket on the other hand.

DE-A1-32 37 294 shows a facade substructure, for the cross rails on vertical mounting rails for mounting of C-shaped fastening elements are provided. The fastening elements have at least one spring element on that some compensation at different Thickness of the facade panels causes. Works in a similar way one of the profile surfaces of the fastening part in vertical Direction, this profile surface is slightly arched is. The fastener shown in DE-A1-32 37 294 serves the overlapping arrangement of the facade panels.

AT-B-372 134 describes a fastening device for the strips or tabs to accommodate Fixing screws on the side surfaces of facade elements are arranged, wherein a spring element is provided in each case is that the falling out and accidental twisting prevent the screw. To achieve this, the spring element presses the screw head against the tab or bar.

EP-A1-0 086 329 describes a connecting device for described a supporting wall and a facing in which into a support leg firmly anchored in the supporting wall Support arm engages, why on the support arm and support leg corresponding profiles are provided. This happens via a locking element, the distance between the Front shell can be adjusted from the bulkhead.

FR-A1-2 685 939 discloses an adjustable one Fastening device for facade elements being one elastic tab is provided through which a Distance between facade element and wall-determining bolts is inserted and fixed.

These, like others, are used for the assembly of facade panels Fasteners can essentially only be in front the final assembly of the individual panels be, if necessary existing wall bumps balanced, different plate thicknesses and / or plate dimensions considered and architectural-static or aesthetic requirements should be observed. Corrections or readjustments for already assembled panels are then generally no longer possible, or only with the help of special tools. Aslant or offset drilled wall holes - if necessary also due to reinforcements provided in the masonry - for Place the dowels for the fastening elements another requirement for correction options.

The invention has therefore set itself the task of fasteners for fastening facade panels to building walls provide that easy and quick to assemble are, with a free adjustability in the three to each other vertical directions - even after their pre-assembly - becomes possible, and errors due to incorrect or volatile careless handling minimized or largely excluded become.

This is achieved through the realization of the characteristic Features of claim 1. Advantageous or alternative Embodiments are dependent on the features of Claims described.

Because the mobility of the bolt via a self-locking Clamping or snap device can be determined and checked over which the latter becomes stuck in its Movability is inhibited, the fixing of the facade panels - be it over one in one on the facade panels provided recess engaging mandrel or be it over the straight position one overlapping the facade panel load-bearing angle profile, even if it is already pre-assembled on the wall Fastening element possible and secured at the same time. Spring elements as a clamping device enable over their spring legs protruding beyond the pin axis comfortable handling even with lower ones already in use or side panels before installing the adjacent panels. This means that corrections that are due to uneven walls, slanted or staggered Wall anchors and / or different panel thicknesses necessary become possible, even without tools, without Removal of plates or unscrewing already set Wall dowels.

Measures to increase stability, such as with beads or support provided body of the fastener, or Guiding by double bearing of the pin, reduce that Risk of the fastener bending under load.

Preventing the bolt from being accidentally pulled out Securing, possibly in the form of a flange-like rivet at the free end of the Bolzens, helps to avoid incorrect operation.

The assembly of the fastener on the wall is thereby simplified that on the holding part of the same slot-shaped recess is provided, via which the fastening element after screwing the dowel screw into the Wall inserted and due to cantilevered, and with a retaining washer assigned to the dowel screw engages coming edges hooked in and twisted as desired, or can be moved vertically. For secure fixing the fastener on the wall - after making all necessary correction settings - can holding part and / or holding disc with a rough surface be, after tightening the dowel screw a frictional Yielding seat.

To be all kinds of facade panels, they are heavy, thin, with or without recess, with perforated or slit-shaped recess, be they one above the other or to be attached side by side, flush or against each other the lugs provided on the bolts be trained differently. So individual thorns can be provided for engagement in hole-shaped recesses, Double mandrels for engagement in slot-shaped recesses, supporting supporting or angle profiles for additional Support of rather thin facade panels, or overlapping Profiles for holding the plates without spikes.

Also depending on the type, weight and / or size of the Facade panels and, if necessary, their number the type of clamping device and thus its clamping force to be determined.

Fig.1

Die Ansicht eines erfindungsgemässen Befestigungselementes mit Blattfeder-Klemmeinrichtung;

Fig. 1a

eine dazu alternative Ausführung mit besonders stabilem Korpus;

Fig.2a

einen Querschnitt durch ein Befestigungselement entsprechend Fig.1 in montiertem Zustand;

Fig.2b

eine Draufsicht auf einen Halteteil mit Haltescheibe;

Fig.3a

eine Draufsicht auf ein erfindungsgemässes Befestigungselement mit einer seitlich in ein Gewinde am Bolzen eingreifender Blattfeder-Klemmeinrichtung;

Fig.3b

einen Querschnitt entsprechend A-A der Fig.3a in montiertem Zustand;

Fig.4

eine weitere Variante eines erfindungsgemässen Befestigungselementes mit Drahtfeder-Klemmeinrichtung;

Fig.5

ein Befestigungselement mit Doppeldorn-Ansatz;

Fig.6

eine der Fig.5 entsprechende Variante mit Winkelprofil zur Auflage einer Fassadenplatte;

Fig.7

eine weitere Variante mit Doppelwinkelprofil und

Fig.8

ein einfaches Befestigungselement mit Feststellung des Bolzens über eine aussenliegende Mutter und am Halteteil vorgesehener Schlitzöffnung.

The invention is described below purely by way of example with reference to the drawing. Show it:

Fig. 1

The view of a fastening element according to the invention with leaf spring clamping device;

Fig. 1a

an alternative version with a particularly stable body;

Fig.2a

a cross section through a fastener corresponding to Figure 1 in the assembled state;

Fig.2b

a plan view of a holding part with a washer;

Fig.3a

a plan view of a fastening element according to the invention with a leaf spring clamping device engaging laterally in a thread on the bolt;

Fig.3b

a cross-section corresponding to AA of Figure 3a in the assembled state;

Fig. 4

a further variant of a fastening element according to the invention with a wire spring clamping device;

Fig. 5

a fastener with a double mandrel approach;

Fig. 6

a variant corresponding to FIG. 5 with an angular profile for supporting a facade panel;

Fig. 7

another variant with double angle profile and

Fig. 8

a simple fastener with locking of the bolt via an external nut and slot opening provided on the holding part.

A fastening element according to the invention is shown in FIG Fastening of facade panels seen from an angle, 2a shows a cross section of the mounted on a wall 2 Fastener shows. The fastener has a body 3 with an approximately b-shaped cross section. To increase the stability of the recording if necessary large and heavy facade panels 1 provided fastener is this body 3 made of a heavy sheet metal profile - If necessary, bent in one piece and can - as in Fig. 1 shown - have beads 16 formed. Via a dowel screw 4 the fastening element is fixed on the wall 2, the dowel screw 4 by a slit-shaped Recess 13 in a flat, on the wall 2 to bear coming holding part 5 of the fastener is inserted. On compared to this holding part 5 - and thus also against the Wall 2 - protruding, bow-shaped part 6 of the Body 3 receives a bolt 7, this on his Free end 7a facing away from the wall has a mandrel 8a Approach 8 has. This mandrel 8a engages in recesses 9 'and 9 "provided in the facade panels 1' and 1" are, each with two facade panels 1 'and 1 "- in 2a a lower 1 'and an upper facade panel 1 "- can be fixed to each other via this mandrel 8a.

The bolt 7 is in the offset part 6 along it Longitudinal axis 7c slidably mounted to secure the horizontal position of the bolt 7 with installed facade panels 1 ', 1 "a further storage 11 of the same is provided, here as a bent up part 6 stamped profile part formed. In the same way also the fastener as such against the wall 2 support. For this purpose, a support 17 on the bow-shaped, stepped part 6 designed to deflect it to minimize with attached facade panels.

The mobility of the bolt 7 is via a clamping device controllable in the form of a leaf spring 10a. In relaxed The leaf spring 10a sits in the state of movement Bolt 7 inhibiting, clamped firmly on this as they pass through a recess 18 protrudes in part 6 and thus opposite this is stationary. However, the leaf spring 10a pressed together, the clamping on the bolt 7 is released, and this becomes movable. One against the against Wall 2 facing free end 7b of the bolt 7 provided flange-like widening, if necessary riveting, serves as a safeguard 12 against the bolt 7 being pulled out if necessary careless handling.

Figure 1a shows an alternative to Figure 1, at the body 3a is double-walled, the resilience the fastener thus becomes particularly high. The bolt 7 is guided in both parts of the body wall.

2a and 2b, which is compared to the state of the Technology simplified assembly of facade panels to achieve one that satisfies structural and aesthetic requirements Facade surface visible.

Above an already placed lower facade panel 1 ', which may be a bottom cornice edge or a lower one End plate can be in the middle, i.e. essentially above a recess provided in this plate 1 ' 9 ', the dowel screw 4 approximately in the dimension of Fixing element predetermined distance in the wall 2 screwed. The fastener is then up open slot 13 on holding part 5 inserted from below, with a retaining washer 15 which is attached to the dowel screw 4 sits, the fastener due to the protruding, upper edges 14a and 14b of the slots 13 on both sides given wall parts 5a and 5b of the holding part 5 to the final Fixing the fastener hooked holds. The bolt 7 becomes 10a after relaxing the leaf spring slidably and the mandrel 8a is with its down pointing end into the recess 9 'of the lower facade panel 1 'inserted. Any necessary corrections, for example, due to the slight inclination of the Plate with respect to horizontal or vertical orientation, can about a new shift or also slight rotation of the bolt 7 and thus the mandrel 8a be made. This is also without special tools one already inserted in the lower facade panel 1 ' Mandrel 8a possible because the two legs of the leaf spring 10a protrude over the upper edge of the lower facade panel 1 'and can be easily gripped. Is the lower facade panel 1 'correctly positioned, the dowel screw 4 are tightened firmly, the holding disc 15, the on the roughened surface of the holding part 15 or the two Wall parts 5a and 5b pressed on both sides of the slot 13 a frictional connection is guaranteed. To can also the wall 2 side of the holding disc 15 be roughened. Then the top facade panel 1 "with its recess 9" facing upwards End of the mandrel 8a inserted.

3a and 3b show a variant of an embodiment of the invention Fastening element in which as a clamping device a leaf spring 10b is provided which laterally in a corrugation 7d attached to the bolt 7 engages. A such training, as shown in Figure 4, in the the clamping device as engaging in the corrugation 7d Wire spring 10c is also designed for less offer heavy facade panels, their depth is also less than in the variant shown above.

It goes without saying that the size, strength and type of the clamping device, as well as the dimensions of the body of the fastener depending on weight, size and number of facade panels used are to be determined, since the on the tensile and compressive forces acting reliably have to be caught.

When cladding columns or window and door reveals for example, generally narrower and / or Lighter facade panels may be used there is no lateral support from other panels is.

Fasteners can be used for this, such as shown in Fig.5, 6 and 7, on the bolts specially trained Have approaches for receiving facade panels. For example, Figure 5 shows an approach 8 ', which as Cross member is formed and carries two mandrels 8a, which in an optionally slot-shaped recess in the Intervene in the facade panel. Approach 8 'can, if necessary perform a carrying function if as a cantilever Carrier profile trained.

In the fasteners shown in Fig. 6 or 7 is the approach as a profile part 8b 'or 8b "in angular or Double-angle shape, if necessary with thin plates stabilizing the weak points of the recess. It the facade panels can also be installed overlapping, where (Fig.7) - especially with very thin facade panels - Recesses in the facade panels that tend to break out can be dispensed with (it will not become a thorn either to be provided at the approach).

8 shows an essentially known fastening element with helical bolt and on the outside of the bow-shaped part 6s lying nut 19, the a slot-shaped recess 13s on its holding part 5s has, such as shown above with reference to Fig. 2b, the assembly and positioning of well-known systems Hook into the wall screws 2 pre-assembled 4 relieving.

Claims (8)

1. Fastening element for facade slabs (1', 1'') on a building wall (2), having a body (3) which has a retaining part (5) provided for receiving a plug screw (4) for anchoring the fastening element in the wall (2) and a part (6) offset therefrom and having a bolt (7) mounted therein so as to be longitudinally displaceable, this bolt (7) having, at its free end (7a) facing away from the wall (2), when the fastening element is mounted on the building wall (2), an attachment (8; 8'; 8b'; 8b''), optionally in the form of a spindle (8a), for fixing a facade slab (1', 1''), optionally by engaging a recess (9', 9'') provided therein, characterized in that a self-locking clamping or snap means (10a; 10b; 10c) which is in the form of a two-sided clamping lever, surrounds said bolt, engages the body and detachably fixes the bolt in a certain relative position is coordinated with the bolt (7).
2. Fastening element according to Claim 1, characterized in that the clamping means (10a; 10b; 10c) is in the form of a clamping spring surrounding the bolt (7) and arranged essentially fixed in relation to the body (3).
3. Fastening element according to Claim 1 or 2, characterized in that the bolt (7) has a rough surface, optionally in the form of ribbing (7d).
4. Fastening element according to any of the preceding Claims, characterized in that a guide (11) which determines the axis (7c) of the bolt (7) and is optionally in the form of a double mounting is provided on the body (3).
5. Fastening element according to any of the preceding Claims, characterized in that a securing device (12) limiting the movement of the bolt (7), in particular on the end (7b) thereof which faces the wall (2) in the mounted state, is provided.
6. Fastening element according to any of the preceding Claims, characterized in that an elongated slot (13) is provided on the retaining part (5) for receiving the plug screw (4), in particular - in the mounted state - the upper edges (14a, 14b) of the wall parts (5a, 5b) being formed to project on either side of the slot (13), in such a way that the position of the fastening element is secured by support on a retaining disc (15) coordinated with the plug screw (4).
7. Fastening element according to any of the preceding Claims, characterized in that - in the mounted state - that surface of the retaining part (5) which faces away from the wall (2) - optionally the surface of the wall parts (5a, 5b) - is/are rough and that optionally that surface of the retaining disc (15) which faces the wall (2) is also rough.
8. Fastening element according to any of the preceding Claims, characterized in that the attachment is in the form of an angular profile part (8b'; 8b'') optionally carrying at least two spindles (8a).

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