EP2622645A1

EP2622645A1 - Fastening device on a building

Info

Publication number: EP2622645A1
Application number: EP11746549.2A
Authority: EP
Inventors: René DUTLER; Jaroslav Stok
Original assignee: SFS Intec Holding AG
Current assignee: SFS Group International AG
Priority date: 2010-09-28
Filing date: 2011-08-22
Publication date: 2013-08-07
Also published as: RU2013119652A; DE102010037831A1; US20130164096A1; WO2012041606A1; CA2808891A1

Abstract

What is described is a device for fastening equipment parts such as photovoltaic panels on a sandwich or single‑shell building envelope using a plurality of fastening elements (20, 20') in the form of bolts, which can be supported at least by a connection part (30, 30') and on a load‑bearing part (12) of the building or the building envelope. If the outer shell (14) is present, the fastening elements (20, 20') can be guided through the outer shell (14) and supported on the load‑bearing part (12) and/or the outer shell (14). Each fastening element (20, 20') can be positively engaged with the connection part (30, 30') and/or, if present, with the outer shell (14) so as in each case to support the connection part (30, 30') on the load‑bearing part (12) and, if present, on the outer shell (14).

Description

Fastening device on a building

description

The invention relates to a device for fastening pieces of equipment such as photovoltaic panels on a sandwich or shelled building envelope by means of a plurality of bolt-shaped fastening elements, which can be supported at least by a connection part and on a load-absorbing part of the building or the building envelope.

One of the aforementioned device-like device is known in connection with a substructure for two-shell roof systems with a support structure from the document EP 0685612 A1. In this case, the support structure is the substructure of a building envelope, which comprises a thermal insulation layer arranged on the support structure and spacer profiles, the latter being connected to the support structure and on the side facing away from the support structure have a connection part with a flat mounting surface for securing a roofing. The connection part provided with the attachment surface rests on the surface of the thermal barrier coating facing away from the support structure. The connecting part is formed by spacer profiles of an elongated U-profile, the web forms the mounting surface. The web of the U-profile and the support structure are connected by spaced apart screws. The fact that the connecting part is supported on the insulating layer is to be regarded as disadvantageous, because so no fixed distance between the connecting part and the support construction. Equipment such as photovoltaic panels, which would be attached to the connector 20, would thus not have a defined position on the building envelope.

A similar prior art, in which the connection part is supported on the insulating layer, is also shown by the documents EP 0854252 A2 and EP 0969160 A2.

A device of the type mentioned is known from the Dokumkent DE 20 2009 015 787 U1. A plate is not supported in this known device, but rests on an insulating material. Fasteners, which are designed as cavity dowel, exert pressure on the plate from above to hold them on the insulating material and to prevent tilting of a mounting pin. The mounting pin is supported with its lower end on a trapezoidal sheet, ie on the roof surface and is bolted at its upper end directly to a support frame of a solar system. The mounting pin also presses with a nut only from above on the plate, so for this also has no support function. By passing the fasteners and the mounting pin through the plate results in a positive connection, but only radially, but not axially effective, because it has no effect in terms of supporting the weight of the support frame on the roof surface. By this construction rocking of the plate should be prevented. Whether this goal is achieved, but depends on the strength of the insulating material, which alone would have to be able to prevent the rocking of the plate.

From the document DE 10 2009 033 416 B3, a fastening system is known, in which the support of an attachment, which may be a support frame for a solar system, takes place on the roof structure solely by a single fastener, which corresponds to the assembly pin in the aforementioned document. The fastening system according to the latter document differs from the mounting device according to the previously actually called document only in that the fastener is screwed into the trapezoidal sheet, instead of, as in the aforementioned document, to be supported on this only. Under the attachment there is a control body and two pressure plates, which apparently only serve to clamp a roofing membrane, probably for sealing reasons. If the fastener should fluctuate in use, for example by wind action on the solar system, its fluctuating movement is stopped by the support on the roofing membrane, a disadvantage that also has the mounting device according to the aforementioned document.

The object of the invention is to provide a device of the type mentioned in such a way that an outer shell or a connection part maintains a fixed distance with respect to a load-absorbing part of the building or building envelope.

This object is achieved according to the invention in that the fastening elements, if the outer shell is present, can be guided through the outer shell and can be supported on the load-absorbing part and / or the outer shell, and that each fastening element with the connection part and / or, if present, with the Outer shell can be brought into positive engagement, so as to support each of the connection part on the load-bearing part and, if present, on the outer shell. Due to the positive engagement between the fastening element on the one hand and the outer shell and / or connection part on the other hand it is ensured that the connection part is supported at least on the load-bearing part, so that the distance to the load-bearing part does not change over time. Equipment, even if they have a greater weight such as photovoltaic panels and their associated frame structures can be so permanently fixed and in particular fixed in position with the device according to the invention, ie without the risk of rocking or tilting on a building envelope. Advantageous embodiments of the device according to the invention form the subject of the dependent claims.

In one embodiment of the device according to the invention, the attachment part is a plate which has an opening or an opening prepared for its manufacture for at least each attachment element. It is thus easier to produce individual attachment points defined as with a spacer profile as in the above-considered prior art, which is designed as an elongated U-profile.

In a further embodiment of the device according to the invention, each fastener is a self-drilling and self-tapping or self-tapping screw with a drill bit for engagement in the load-bearing part. The device can be attached to the building envelope as quickly and safely.

In a further embodiment of the device according to the invention, each fastening element is provided in a direction opposite to the drilling portion with a supporting thread. The positive engagement between the fastener and the outer shell and / or the connector can be prepared in a simple manner by the fastener is placed so deep in the lastaufnehmenden part that the support thread with the outer shell positively engages or immediately under the outer shell lie down to support these on the support thread against the load-bearing part.

In a further embodiment of the device according to the invention, a sleeve-shaped connecting element is used in one of the openings, which is provided with a connecting thread. The connecting thread can be an internal or external thread, which serves for the attachment of equipment. In this case, the fastening part is fastened to the building shell by means of further fastening elements, which are connected in a form-fitting manner to the connection part. handle can be brought so as to support the connection part on the load-bearing part.

In a further embodiment of the device according to the invention, the connection element is provided with a plate for fixing in the connection part. In this case, in a further embodiment of the device according to the invention, the connection element can be arranged in a center region in the connection part.

In a further embodiment of the device according to the invention, the connection element is arranged in a center region of the connection part. This design ensures a uniform force transmission from the connection part to that part (for example the outer shell) which carries the connection part.

In a further embodiment of the device according to the invention, at least one of the fastening elements in the connection element can be fixed in a form-fitting manner. For this purpose, the two aforementioned embodiments are suitable. The positive fixing at least one fastener for supporting on the load-bearing member may be omitted if the connector is supported directly on an outer shell, which without an intermediate insulating layer on the load-bearing part, z. B. the substructure of the building envelope, is supported. In this case, it is sufficient to fasten the connection part simply on the outer shell with several fastening elements.

In a further embodiment of the device according to the invention, at least one force transmission element can be attached to the connection element as an intermediate element between the device and one of the equipment parts. This configuration facilitates the alignment of equipment in one or each individual attachment point, for example on the building envelope. In a further embodiment of the device according to the invention, the connecting part is angled in an edge region in opposite direction to the load-receiving part. The fasteners, which are placed through openings in the edge region in the load-bearing part, result in a more stable position of the connection part on the outer shell. In a further embodiment of the device according to the invention, the or each opening in the unassembled connection part is formed as a blind hole or it is pre-marked in preparation for the production of the or each opening their position on the connection part in a drilling pattern. This embodiment allows to produce the or each opening in the connection part only during assembly.

In a further embodiment of the device according to the invention, a sealing disc can be inserted between a head of the or each fastening element and the connecting part. When using the device according to the invention as the tightness of a building envelope is guaranteed.

Embodiments of the invention will be described in more detail below with reference to the drawings. It shows:

1 is a sectional view of a first embodiment of a on a

Sandwich building envelope attached device according to the invention,

2 in a same view as in FIG. 1, a somewhat modified first embodiment of the device according to the invention,

3 is a plan view of a connection part of the device according to Fig. 1,

Fig. 4 shows the connection part in a sectional view along the line IV-IV in

3, 5 shows a sleeve-like connection element of the connection part according to FIG.

3, in a longitudinal side view in FIG. 5a, in a bottom view in FIG. 5b and in a longitudinal sectional view in FIG. 5c, FIG.

FIG. 6 shows a top view of a connection part of the device according to FIG. 2, wherein additionally a corner of the connection part is shown in section as a detail in order to make visible its angled formation,

7 shows a connection element of the connection part according to FIG. 6, specifically in FIG

7a in a longitudinal side view, in FIG. 7b in a bottom view and in FIG. 7c in a longitudinal sectional view, FIG.

8 shows a second embodiment of the connection part of the device according to the invention,

9 in a front view and partly in section, the connecting part according to Fig. 8 when it is used on a corrugated outer shell,

10 shows the arrangement according to FIG. 9 in a partial sectional view rotated by 90 °, FIG.

Fig. 1 1, the arrangement of FIGS. 9 and 10 in a perspective

View and

Fig. 12 in a same view as in Fig. 1 1, the use of the device according to the invention on a single-shell building envelope.

Fig. 1 shows a sectional view of the use of a first embodiment of a generally designated 1 1 fastening device according to the invention for equipment (not shown) as photovoltaic panels on a multi-shell building envelope. The latter includes a substructure, which is shown as a load-bearing part 12. On the load-bearing part 12 is a thermal barrier coating 13, which is covered by an outer shell 14. The fastening device 1 1 comprises a connection part 30, which is formed as a square plate, which is shown in Fig. 3 in plan view. The connecting part 30 has four openings 32 on the circumference in the edge area, which are each designed as a through-hole, and in a center area 35 an opening 36, which is likewise designed as a through-hole. The connection part 30 has a thickness D (FIG. 4). As shown in FIG. 1, a sleeve-shaped connection element 33, which is provided on the inside with a connecting thread 34, is inserted into the opening 36. As shown in FIGS. 5a-5c, the connection element 33 is provided with a plate 38 for fixing in the connection element 33. The plate 38 is retractable in a circular recess in the outer shell 14, as can be seen in Fig. 1. The connecting element 33 is fixed in the opening 36 by means of a lock nut 39.

In the aforementioned embodiment and in the embodiments described below, each bolt-shaped fastening element is a self-drilling and self-tapping or self-tapping screw having an anchoring thread 21 and a boring part 29 for engaging in the load-bearing part 12.

In Fig. 2, a slightly modified embodiment of the connecting part 30 is shown, which is also a square plate, but which is angled in an edge region 31 in opposite direction to the load-bearing member 12 at all four corners, as in Figs. 2 and 6 can be seen. An angled corner W is shown in Fig. 6 at the top right as a detail. The embodiment of the connecting part 30 according to FIG. 6 entails that when the fastening device 10 is mounted, the fastening elements 20 inserted into the openings 32 are angled at the same angle W against the outer shell 14 and accordingly against the load-absorbing part 12. The sleeve-like connection element 33, which is incorporated in the 2 is used, the same connection element 33 as in the embodiment of FIG. 1 may be. In both cases, the connecting element 33 is fixed in the connecting part 30 with the aid of the aforementioned counter nut 39, which is screwed onto an external thread 42 of the connecting element 33.

The connection element 33 according to FIGS. 2 and 7a-7c has essentially the same structure as the connection element 33 according to FIGS. 1 and 5a-5c, which is why a further description is unnecessary.

As shown in FIGS. 1 and 2, the fastening elements 20 inserted in the edge region 31 of the connecting part 30 are each provided with a supporting thread 22 below a head 23. The support thread 22 is self-tapping and in FIGS. 1 and 2 with the outer shell 14 in threaded engagement in each case. The support thread 22 could instead be arranged closer to the anchoring thread 21, so that it would be supported after passing through the outer shell 14 of this in the illustration in FIGS. 1 and 2 each on its left side.

A power transmission element 50 can be screwed into the connection element 33 as in FIG. 1 or screwed onto the connection element 33 as in FIG. 2.

Fig. 8 shows a perspective view of a connection part 30 'of a second embodiment of a fastening device 1 1' according to the invention. A sleeve-shaped connection element 33 'is integrally formed on the connection part 30'. The connection part 30 'is a rectangular plate, which has in the edge regions in the region of its two narrow sides in each case five openings 32 for fastening elements 20. The respective outer three openings 32 are formed in a plate insert 40. The plate insert 40 may each be made of metal, whereas the connection part 30 'may consist of glass fiber reinforced plastic. The openings 32 may each be formed in the unmounted connection part 30 'as a blind hole or the or each opening can be prepared for their preparation, for example, characterized in that the location of the or each opening 32 on the connecting part 30 'in a drilling pattern (not shown) is drawn.

In the fastening device 1 1 'according to FIGS. 8-1 1, the bolt-shaped fastening element 20' is a self-drilling and self-tapping or self-tapping screw with the anchoring thread 21 and the boring part 29 for engagement in the load-receiving part 12. When set screw this extends through the opening 32 and is fixed according to the partial sectional view in Fig. 10 with its head 23 on the upper edge of the connecting element 33 '. According to FIG. 10, the force transmission element 50 is screwed onto the connection thread 34 of the connection element 33 ', which is an integral part of a mast 52 here. The bottom of a threaded bore in the power transmission element 50 forms a stop 51, with which the mast 52 is supported on the screw head 23, as can be seen in the partial sectional view in Fig. 10. Because of this construction, the connection part 30 'can be fixed on the outer shell 14 at a distance above the thermal barrier coating 13. The mast 52 connected above the fastening element 20 'and above the stop 51 is here a part of the force transmission element 50 which can be attached to the connecting element 33 in FIGS. 1 and 2 and, like this, serves as an intermediate element between the device 11 or 11'. and equipment. The equipment (not shown) may be mounted on a mounting plate 55 secured to the mast 52 by a height adjustment member 53.

In the arrangement according to FIGS. 9-1 1, an outer shell 14 is arranged at a distance o above the thermal insulation layer 13. With the help of the fasteners 20, the connector 30 'is mounted on the outer shell 14, which is shown here as a trapezoidal profile element. The fastening elements 20 are indicated as screws in FIGS. 9 and 10. Although the bolt-shaped fastening element 20 'is likewise present in the embodiment according to FIG. 12, it can be omitted, because here a corrugated element forming the outer shell 14 rests directly on the load-absorbing part 12, which may be the substructure of a roof or a facade. Fig. 12 thus corresponds to the use of the fastening device 1 1 'in a single-shell building shell. The connection part 30 'is fastened on the corrugated element via an intermediate screw-on plate 60.

List of Reference Numerals, for the fastening device

load-bearing part (substructure)

thermal barrier

outer shell

, 20 'fastener

anchoring thread

support thread

screw head

shaft

thread-free shaft section

sealing washer

drill

, 30 'connector

border area

opening

, 33 'connecting element

connecting thread

center area

Opening (central bore)

bearing surface

Plate

locknut

plate insert

external thread

Power transmission element

attack

mast

height adjustment

screwing

screwing D thickness W angle

Claims

claims

1 . Device for fastening equipment such as photovoltaic panels on a sandwich or shell building envelope by means of a plurality of bolt-shaped fastening elements (20, 20 ') at least by a connecting part (30, 30') and on a load-bearing part (12) of the building or the building envelope can be supported, characterized in that the fastening elements (20, 20 '), if the outer shell (14) is present, can be guided through the outer shell (14) and on the load-receiving part (12) and / or the outer shell (14 ) are supportable, and

in that each fastening element (20, 20 ') can be brought into positive engagement with the connecting part (30, 30') and / or, if present, with the outer shell (14), in each case in such a way that the connecting part (30, 30 ') on the supporting the load-bearing part (12) and, if present, on the outer shell (14).

2. Apparatus according to claim 1, characterized in that the connecting part (30, 30 ') is a plate which has an opening (32, 36) or prepared for their preparation opening for at least each fastening element (20, 20').

3. Device according to claim 1 or 2, characterized in that each fastening element (20, 20 ') is a self-drilling and self-drilling cutting or self-forming screw with an anchoring thread (21) and a boring part (29) for engagement in the load-bearing part (12).

4. Apparatus according to claim 3, characterized in that each fastening element (20) is provided in a direction opposite to the drilling portion with a supporting thread (22).

5. Device according to one of claims 2 to 4, characterized in that in one of the openings (32, 36) a sleeve-shaped connection element (33) is inserted, which is provided with a connecting thread (34).

6. Apparatus according to claim 5, characterized in that the connection element (33) is provided with a plate (38) for fixing in the connection part (30).

7. The device according to claim 5, characterized in that the connecting element (32) in a center region (35) of the connecting part (30) is arranged.

8. Device according to one of claims 5 to 7, characterized in that at least one of the fastening elements (20 ') in the connection element (33) is positively fixable.

9. Device according to one of the preceding claims, characterized by at least one on the connection element (33) attachable power transmission element (50) as an intermediate member between the device (1 1, 1 1 ') and one of the equipment.

10. Device according to one of the preceding claims, characterized in that the connecting part (30) in an edge region (31) in 3 is angled to the load-bearing part (12) opposite direction.

1 1. Device according to one of the preceding claims, characterized in that the or each opening (32) in the unassembled connecting part (30 ') is formed as a blind hole or that in preparation for the preparation of the or each opening (32) whose position on the connecting part (30 ') is drawn in a drilling pattern.

12. Device according to one of the preceding claims, characterized by a between a head of the or each fastener (20) and the connecting part (30) insertable sealing disc (26).