EP1078135B1 - Frontage system for siding a building - Google Patents

Abstract

The invention relates to a frontage system for siding a building, comprising a support (1) made of metal having a filling element support, wherein filling elements (2, 2'), more particularly, laminated glass panel elements, are placed, said elements being fixed by means of outer locking strips (3) that are releasably connected to the support (1), wherein inner sealing elements (4) and outer sealing elements (5) are also provided. The invention aims at ensuring flexible, simple and functional assembly of said system on any metal support (1). To this end, a separate profile rail (7) is provided on the metal support (1) that is placed thereon for fixing the locking strips (3), the profiles of which have a helical groove section (8) directly interacting with fastening screws (6) and at least one additional locking section (9, 9') located next to the helical groove section (8) and fixing the inner sealing elements (4).

Description

The invention relates to a facade system for cladding a building according to the preamble of claim 1.

Such a facade system is known from DE 196 06 906. It consists in essentially from a substructure made of posts and arranged transversely to it Bars. Both elements are made from a hollow profile. In the through Metal frames that form posts and transoms are the filling elements - here Laminated glass panels - arranged. Form the end towards the outside Retaining strips, which are attached to the metal frame with appropriate fastening screws are connected. To seal the system are in the longitudinal grooves of the post, the Bolts as well as the molded sealing elements inside and arranged outside. During assembly, the self-drilling fastening screw by hand in a guide and pressure spacer system as much as possible put into it. After attaching an electric screwdriver, the Fastening screw rotated so that it deals with a specially trained Drill tip into the nose-shaped profile of the post or transom einschraubt. This facade system allows a simple and therefore quick Assembly of the filling elements on the substructure; however, it is over Strength reasons only suitable for profiles where penetration of the Fastening screw is possible.

To avoid this disadvantage, DE 38 23 939 is a fastening solution known for filling elements on the substructure, in the separate threaded bolt be used. Filling elements are on a hollow profile shown in Figure 1 a retaining bar attached. There are threaded bolts on the mullions and transoms shot or welded onto which metal bolts are screwed. The Metal bolts have a screw-on area, a conical intermediate area and an area for screwing in fastening screws for the retaining strip.

Because of the use of separate welded or piled Threaded bolts for fastening the filler elements can be used as the facade profile Hollow profile can be used to conduct fluids. Problems with leaks cannot occur. Furthermore, the substructure is not specific to one specific facade system matched. It is therefore inexpensive to manufacture. The flat mounting surface on the outside of the frame also leaves a flexible customizable veneering of the building. A major disadvantage of this Facade system, however, consists in its complex assembly. Like practice has shown, the fastening of the under construction site conditions protruding threaded bolts on the metal frame in true alignment Execute match poorly. The operator of the fastening device - for example welding machine - it only succeeds with considerable effort Threaded bolts on the substructure orthogonally at equidistant intervals to be aligned flush. When installing this threaded bolt solution in a workshop the problem arises that the attached protruding threaded bolts especially when transporting to the construction site due to transverse impact loads can easily bend or break away.

From a brochure by Hermann Forster AG (forster thermfix vario, 02.94) another facade system emerges. It essentially consists of one Hollow profile as a substructure, with a clamping groove as a fastening groove for Filling elements is provided. The clamping groove is used to hold clamping elements, whose clamping foot expands when a spreader sleeve is inserted and thus under the beveled flanks of the clamping groove, so that a clamp is made. With the clamp, a holding element for receiving Fastening screws for the filling elements attached. It is with this Facade system therefore requires a variety of elements, their use the assembly effort increased.

DE 295 00 286 discloses a facade system which is also one Hollow section served as a substructure, which also has a fastening groove is provided. The fastening groove is used in contrast to the previous one described facade system as a screw groove section with a opposite the groove base narrowed neck area where a fastening screw is attached directly to the neck area Intervention comes. The two facade systems described above are based on the Use of specially profiled hollow profiles, which is quite compared to standard profiles are complex to manufacture.

DE 86 32 187 U1 shows a generic facade system in which elaborate a profile rail on a substructure over an intermediate Sealing element by means of welded-on bolts bridging the sealing element is attached. Lateral sections on the profile rail widen the contact surface the sealing element in order to ensure that it is as torsion-free as possible, i.e. rigid To enable attachment of the profile rail. Furthermore, there is a fastening of the outer Retaining strip only possible via additional elements that are adapter-like on the one hand Tapped hole take up the screw and on the other hand via lateral recesses establish a positive connection to the profile rail. Because of the additional The assembly work required for this facade system as a whole is also required Quite high.

From the previously published program overview "Steel, wood and aluminum systems for facades, Light roofs, winter gardens "(RAICO Bautechnik GmbH, stand 2.97, pages C-2.01 and C-1.02) the result is a facade system in which a profiled rail is profiled by forming is welded to the substructure. As a fastener for an outer retaining strip mounting screws are provided, which directly engage in a screw channel come, which in turn inserted into the profiled U-shaped profile rail and inside is held positively. For fixing the M-shaped ones running across the profile rail Seals on the substructure are on both sides of the U-shaped profile rail Holding knobs welded onto the substructure. This too Solution requires a large number of components, which is a rather high assembly effort caused.

The invention has for its object to provide a facade system that is simple and at the same time can be installed reliably and functionally.

The task is based on a facade system according to the preamble of Claim 1 in connection with its characteristic features solved. Advantageous further developments of the invention are specified in the subclaims.

The invention includes the technical teaching that one for attaching the retaining strips a substructure directly attached separate profile rail is provided. The profile of the profile rail has a direct one with fastening screws interacting screw groove section and an inner sealing element fixing holding section.

The solution according to the invention has the advantage that the facade system is characterized by the Use of a separate profile rail on any metal substructure, which has a neutral - i.e. not specially profiled - contact surface can be used. So the profile rail can be used universally and for example on one made of T-beams, Rectangular or round profiles made of metal can be attached. The facade system is therefore largely independent of the substructure and so far flexible. Since the profile rail both in terms of functional integration the screw-in points for the fastening screws as well as the fixing points for the inner ones Sealing elements specifies assembly errors due to failure to observe assembly dimensions excluded on the construction site. Because the fastening screws are direct, i.e. without Use of additional means with the screw groove section cooperate, are otherwise common items in the form of mother or Clamping elements saved. In addition, the distance between the mounting screws freely selectable among each other - depending on the load. Another advantage is that by the use of the already known guide and pressure spacer system a perpendicular and aligned installation of the fastening screws is ensured. In addition, adequate sealing in the area of penetration of the inner sealing element guaranteed.

The profile rail is preferably on a plane running in the facade level Face of the substructure made of metal attached. For that, the outside directed surface of the substructure made of metal. It is also conceivable also, the profile rail on the flank sides of a substructure made of metal Fasten.

One measure improving the invention is that the mounting rail its arched floor surface facing the metal substructure is. Thus, there is only contact with a flat substructure made of metal by a line-like support in the bilateral edge area of the bottom surface of the Rail. This design avoids the accumulation of condensation between the profile rail and the substructure made of metal and thus allows ventilation, which results in crevice corrosion in the fastening area prevented between the metal substructure and the profile rail. as it were is thereby an optionally used anti-corrosion agent Allows spread in this area.

The profile rail preferably has two holding sections for the inner one Sealing element by an acute-angled inclination of the two side edges of the Profile rail are formed. The use of the side edges of the profile rail too Holding purposes for the inner sealing element - otherwise under load its target position could be pressed - is particularly effective. Through the The inner sealing element is positioned at an acute angle to the side edges the same pressed and thus fixed firmly and reliably.

The screw groove portion is advantageously designed such that it has a compared to the bottom of the groove narrowed neck area, in which the Fastening screw comes into engagement. This measure makes it easier Screwing in the fastening screw and at the same time provides a reliable hold the screw connection.

Another measure improving the invention is that Profile rail is made from a steel band and is profiled by forming. In order to it can be produced efficiently. A quick and secure attachment of the profile rail the metal substructure can be made by welding, whereby as Welds are preferably spaced along the edge regions on both sides arranged slots are provided. The welding takes place on the Edge of the profile rail facing flank side of each elongated hole. The Weld seam layer is designed so that a subsequent corrosion protection measure can be introduced. When using such a welded connection, this can inner sealing element for bridging weld seam heights Have flexible contact area so that the weld seam the location of the inner Sealing element is not hindered. The inner sealing element can continue to partial absorption of fastening forces a rigidly trained Have flank area.

The profile rail according to the invention can be largely independent of the Use substructure and can be used together with a thermal Insulation body to be installed for thermal insulation, which is then between the Substructure made of metal and the profile rail is arranged.

Fig. 1

eine perspektivische Darstellung eines Fassadensystems in Außenansicht,

Fig. 2

einen Teilschnitt durch ein Fassadensystem im montierten Zustand (ohne Abdeckleiste),

Fig. 3

eine perspektivische Darstellung einer Profilschiene mit Schweißstelle,

Fig. 4

eine Draufsicht einer Profilschiene nach Figur 2,

Fig. 5

einen Teilschnitt durch ein Fassadensystem mit thermischem Isolationskörper im montierten Zustand (ohne Abdeckleiste),

Fig. 6

eine Draufsicht auf eine Profilschiene mit daran befestigtem Füllelementträger und

Fig. 7

eine Seitenansicht von Figur 6 jedoch mit montiertem inneren Dichtungselement und ohne Füllelementträger.

Further measures improving the invention are specified in the subclaims or are shown in more detail below together with the description of a preferred embodiment of the invention with reference to the figures. It shows:

Fig. 1

a perspective view of a facade system in an external view,

Fig. 2

a partial section through a facade system in the assembled state (without cover strip),

Fig. 3

a perspective view of a profile rail with a weld,

Fig. 4

2 shows a top view of a profile rail according to FIG. 2,

Fig. 5

a partial section through a facade system with thermal insulation body in the assembled state (without cover strip),

Fig. 6

a plan view of a profile rail with attached filler element and

Fig. 7

a side view of Figure 6 but with the inner sealing element installed and without filler element carrier.

A facade system according to Figure 1 is on one of vertical posts 1a and across crossbars 1b composed of substructure 1 made of metal assembled. The substructure 1 made of metal is assigned to the building. The Facade system is used to attach filler elements 2, 2 'for cladding the Building. As filling elements 2, 2 'are in the embodiment Laminated glass pane elements provided. The filling elements 2, 2 'are external Retaining strips 3 and optionally with cover strips detachable with the substructure 1 connected.

The partial section of Figure 2 shows the fastening system in detail. It is a between the edge area of each filling element 2, 2 'and the substructure 1 provided inner sealing element 4 shown. Also located between the edge region of each filling element 2, 2 'and the retaining strip 3 an outer Sealing element 5. On the representation of a retaining strip 3 veneering Cover strip was omitted here. The sealing elements 4 and 5 prevent this Penetration of external climatic influences in the building and in reverse Direction also an isolating effect. The detachable connection of the retaining strips 3 with the substructure 1 is equidistant along the substructure 1 over several arranged fastening screws 6 realized. Each fastening screw 6 interacts with a profile rail 7 welded to the substructure 1. The For this purpose, the profile rail 7 has a screw groove section 8 the profile rail 7 with two holding sections fixing the inner sealing element 4 9, 9 '. The inner sealing element 4 has to bypass Weld seam peaks on a flexible contact area 10. At least partially picking up caused by the mounting screws 6 Fastening forces is the inner sealing element 4 with a rigid design Side area 11 equipped. So that the inner sealing element 4 through a shearing effect of the angled holding sections 9, 9 'is not damaged become. To determine the clamping distance for the filling element 2, 2 'to be held a guide and coaxially penetrated by the fastening screw 6 Pressure spacer system 12 is provided. The sealing leadership and Pressure spacer system 12 consists of a mounting screw 6 attached guide sleeve, which is inserted into a spacer sleeve and insofar as both a guide for the mounting screw 6 and a Spacer for the filling element 2, 2 'forms. The guide and pressure spacer system 12 comes sealingly on one end face with the retaining strip 3 and on the other end face sealing against the inner sealing element 4 for contact. So that will the penetration of corrosive media into the screw channel minimized.

The specially designed profile rail is made from a steel strip according to FIG and profiled by forming. The profile rail 7 is on its substructure 1 facing floor surface 15 executed concave. This creates a contact to the substructure 1 only by linear support of the profile rail 7 in their edge regions 16, 16 'on both sides. The holding sections 9, 9 'for the inner Sealing element 4 are due to an acute-angled inclination of the two side edges the rail 7 is formed. Due to the acute angle of the two Holding sections 9, 9 'will be the inner sealing element 4 during assembly - in other words when Tightening the fastening screw 6 - pressed under the acute-angled slope. A stable hold of the inner sealing element 4 is thus ensured. The Screw groove section 8 of the profile rail 7 has one opposite the groove base narrowed neck area. So that the mounting screw 6 comes in alone Groove neck area for engagement, which makes it easy to screw in Fastening screw 6 and a secure hold of the screw connection allows.

As shown in Figure 4, the profile rail is along its both sides Edge regions 16, 16 'are provided with spaced-apart elongated holes 17a-17d. The elongated holes 17a - 17d serve to fasten the profile rail 7 to the Substructure 1. This is welded to the edge of the Profile rail 7 facing flank side of the elongated hole 17a - 17d. That kind of Welding allows optimal ventilation of the profile rail 7 and gives corrosive media a minimal contact area in the weld area. Farther This type of welding enables concealed, ie not from the outside visible, connection.

FIG. 5 shows an embodiment in which at least parts of the Substructure 1 are designed as a steel tube filled with water. The Water filling can be used in particular for heating or cooling the building become. In this application it is necessary to avoid Thermal bridges in the facade of the substructure 1 of the Fastening elements of the facade system is mounted insulated. For this purpose a thermal insulation body 18 is provided, which is between the profile rail 7 and the inner sealing member 4 is placed. The thermal insulation body 18 contains on its side facing the profiled rail 7 recesses 13, one Free space for the two holding sections 9 and 9 'and for the screw groove section 8 form. On its side facing the inner sealing element 4, the thermal insulation body 18 also recesses 14, the corresponding Take up cone-shaped formations on the inner sealing element 4. The remaining Design features of this embodiment are with the beginning Embodiment described identical, so that the facade system slightly on the special requirements of fluid-carrying substructures can be adapted.

To elevate the filling element 2, 2 ', according to FIG. 6, is on the profile rail 7 mounted filler element carrier 21 is provided. The filler carrier 21 takes the occurring weight forces of the resting on it - not shown here - Filling element 2, 2 'and is indirectly via a sleeve-like element 19 on the Profile rail 7 attached.

The sleeve-like element 19 acts according to FIG. 7 with a penetrating point Fixing screw 20 together. The mounting screw 20 is from Bottom area of the profile rail 7 coming in the groove neck area of the profile rail 7 anchored and pressed through the inner sealing element 4. To be reliable Sealing effect at the point of penetration of the inner sealing element 4 ensure, the mounting screw 20 is provided with a tip, so that inner sealing element 4 on the fastening screw 20 after piercing comes tight to the system. In addition, the sleeve-like element 19 comes with its end facing the profile rail 7 sealing on the inside Sealing element 4 to the system. in which the fastening screw 20 projecting part of the sleeve-like element 19 can be a Filling element carrier 21 fixing fastening screw (not shown here) be screwed in.

LIST OF REFERENCE NUMBERS

1

substructure

2

filler

3

retaining strip

4

Sealing element, inside

5

Sealing element, outside

6

fixing screw

7

rail

8th

bolt groove

9

holding section

10

Contact area, flexible

11

flank area

12

Guide and pressure spacer system

13

recess

14

recess

15

Floor area, arched

16

border area

17

Long hole

18

insulation element

19

Element, sleeve-shaped

20

fixing screw

21

Füllelementträger

Claims (18)

1. Facade system for the facing of a building, comprising a support structure (1) of metal, onto which infilling panel elements (2,2') are attachable over outer retaining shoulders (3), inner and outer sealing elements (4, 5) being provided for sealing purposes, and, for the attachment of the retaining shoulders (3), a separate profiled rail (7) comprised of a steel strip and profiled by reshaping being provided mounted directly resting against the support structure (1) of metal,
   characterized in that the profile thereof presents a helical groove portion (8) directly cooperating with fastening screws (6), as well as at least one further, angled holding portion (9, 9') located adjacent to said helical groove portion (8) and fixing the inner sealing element (4), an edge zone being formed by the angled configuration extending into the direction of the infilling panel element (2, 2') and engaging into a corresponding groove-like recess on the inner sealing element (4) or on an insulation body (18).
2. Facade system according to claim 1,
   characterised in that the profiled rail (7) is mounted onto a planar front face of the support structure (1), which front face is running in the facade plane.
3. Facade system according to claim 1 and 2,
   characterized in that the support structure (1) is comprised of posts and bars arranged transversely thereto, which form a frame for the infilling panel elements (2, 2').
4. Facade system according to claim 3,
   characterized in that post (1a) and bar (1b) display a T-profile, wherein the profiled rail (7) comes to rest on the traverse web thereof.
5. Facade system according to any one of claims 1 through 4,
   characterized in that the profiled rail (7), at its bottom surface (15) facing the support structure (1), is configured concavely curved in such a manner that a contact to the support structure (1) solely ensues by the line-type rest in the bilateral edge zone (16, 16') of the bottom surface (15).
6. Facade system according to any one of claims 1 through 5,
   characterized in that two holding portions (9, 9') for the inner sealing element (4) are formed by the acute-angled inclination of the two side edges of the profiled rail (7).
7. Facade system according to any one of claims 1 through 6,
   characterized in that the helical groove portion (8) displays a groove neck zone constricted relative to the groove bottom in such a manner that the fastening screw (6) comes into engagement at the groove neck zone.
8. Facade system according to any one of claims 1 through 7,
   characterized in that the profiled rail (7) is comprised of a steel strip and is profiled by reshaping.
9. Facade system according to any one of claims 1 through 8,
   characterized in that the profiled rail (7) is secured to the support structure (1) by welding.
10. Facade system according to claim 1,
    characterized in that elongated slots (17a - 17d) arranged spaced along the bilateral edge zones (16, 16') are provided as the welding spots, the welding ensuing in each case at the flank side of each elongated slot (17a - 17d) facing the edge of the profiled rail (7).
11. Facade system according to claims 9 and 10,
    characterized in that the inner sealing element (4) displays a flexible contact zone (10) for bridging weld seam superelevations.
12. Facade system according to any one of the preceding claims,
    characterized in that a guiding and contact pressure spacer system (12) coaxially penetrated by the fastening screw (6) is provided for adjusting the clamping distance for the infilling panel element (2, 2') to be retained.
13. Facade system according to claim 12,
    characterized in that the guiding and contact pressure spacer system, at the one front face, comes sealingly to rest against retaining shoulder (3) and, at the other front face, comes sealingly to rest against the inner sealing element (4).
14. Facade system according to any one of the preceding claims,
    characterized in that the inner sealing element (4) displays a rigidly configured flank zone (11) for partially receiving fixing forces.
15. Facade system according to any one of the preceding claims,
    characterized in that an infilling panel element sustainer (21) mounted to the profiled rail (7) is provided for mounting the infilling panel element (2, 2') on the support structure (1).
16. Facade system according to claim 15,
    characterized in that the infilling panel element sustainer (21) is connected with the profiled rail (7) via a pointed fastening screw (20) piercing the inner sealing element (4) and cooperating with a threaded sleeve-like element (19) coming to rest on the inner sealing element (4).
17. Facade system according to any one of the preceding claims,
    characterized in that the posts and bars are configured as hollow sections.
18. Facade system according to any one of the preceding claims,
    characterized in that a thermal insulation body (18) is provided between the profiled rail (7) and the inner sealing element (4) with the post and the bar being configured as a fluid-conducting hollow section.

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