EP3354812B1 - System for fixing an insulating panel - Google Patents

Description

The present invention relates to a system for fastening an insulating panel to a structure according to the preamble of claim 1.

The present invention is generally concerned with insulating panels for buildings for thermal insulation. The insulation boards are in particular so-called insulation boards or thermal insulation boards. However, it can also be other facade panels or the like.

Insulating panels are designed in particular for thermal insulation and usually have low thermal conductivity and/or low bulk density.

Insulating panels are preferably made of, in particular, foamed plastic, such as expanded or extruded polystyrene, polyurethane, polyisocyanurate, phenolic resin, polyethylene or the like, foamed elastomers, mineral fibers such as mineral wool, glass wool or the like, mineral foams such as pumice stone or the like. , Vegetable raw materials such as wood fiber, wood wool, coconut fiber or the like., Animal fibers such as sheep's wool, and / or recycling material such as cellulose.

The insulating material used is usually relatively soft or not very resilient. Against this background, it is important that the insulation boards are securely fastened and/or that they are handled with care when fastening.

Insulating panels are usually attached to a building, in particular to a house or other building, to a facade, wall, ceiling or the like. However, the attachment can preferably also be carried out on another substructure. Against this background, the term “structure” should preferably be understood in a correspondingly broad sense.

Insulating panels are usually (first) glued to a building and (subsequently or additionally) secured or fastened with fastening means such as screws and/or dowels. The insulation panels fastened in this way are then usually plastered.

It is particularly important that good insulation, particularly thermal insulation, is achieved, preferably in such a way that no thermal bridges from the Structure are formed to the outside, that fasteners used or parts thereof, such as screw heads, dowel plates or the like., Not visible from the outside and / or that a simple, quick, safe and / or site-specific attachment or assembly is made possible.

The WO 2015/110270 A1 and DE 20 2015 005 171 U1 disclose an insulating board with an integrated fastening element arranged close to the building. The fastening element is arranged coaxially to an outwardly open recess in the insulating board. The insulation board is preferably first glued to an associated structure. A drill is then used to drill through the fastening element into the building, in order to then be able to insert a dowel and bolt the fastening element to the building and thus the insulating board to the building. Finally, the recess of the insulating board is closed.

The CH 671 616 A5 discloses a device for fastening components to lightweight concrete. The device has a steel dowel, which carries a plastic retaining mushroom on the front and is held in place by a steel nail, thereby anchoring a thermal insulation panel to a lightweight concrete wall. The corrosion of the steel anchor is effectively prevented by a thin plastic coating applied to its surface.

The EP 1 182 361 A2 describes a fastening system for components on a wall with a dowel that can be inserted into a hole in the wall, an independent sleeve part with a plate-shaped holding element or holding plate integrally formed on the sleeve part and with an expanding element, for example in the form of a screw. The shank of the dowel has a plurality of opposite projections. Corresponding grooves are made in the inner surface or receptacle of the sleeve part, in which the projections of the dowel can engage and thus secure the two elements dowel and sleeve part against twisting.

The DE 9 410 723 U1 discloses a sure-footed fastening element for insulating and sealing material on flat roofs, consisting of a holder and a screw, the holder having a head designed as a distributor plate and a shaft with a central lifting channel, a shaft extension designed as a dowel being vertically adjustable in the lifting channel of the shaft . After the dowel and the screw have been inserted into the substructure, the holder head can slide up and down along the shaft extension. The fastening element has an anti-twist device, which is realized in that the inner wall of the lifting channel and the outer wall of the corresponding shaft extension are designed as a square.

The DE 3 244 839 A1 discloses an insulation holder for mechanically attaching insulation panels to walls. The insulation holder has a dowel with an associated expansion element and a holding plate. In order to prevent moisture from penetrating in the direction of the insulation board, a cap that is inextricably attached to the insulation holder by means of a tab is slipped over the expansion element and dowel at a distance.

The EP 2 639 374 A2 describes a fastening of insulating boards, in which plate-like fastening elements are introduced into the insulating boards by means of a setting tool with a protruding cutting edge and then dowelled to the building. Insulating material is ground up or milled by rotating the fastening elements, with the fastening elements without openings and the protruding cutting edge preventing loose insulating material, milling dust or the like from escaping when setting.

The DE 195 38 801 A1 relates to a fastening element for insulating and sealing material on flat roofs, consisting of a holder and a screw, the holder having a head designed as a distributor plate and a shank for receiving the screw. Furthermore, a shank extension designed as a dowel is provided, which can be plugged onto the shank tip of the holder as an attachment for adaptation.

The present invention is based on the object of facilitating or simplifying the fastening of an insulating board to a building and/or specifying a system for fastening an insulating board to a building, preferably with a simple, quick, reliable and/or inexpensive fastening of the insulating board on a structure is made possible or supported.

The above object is solved by a system according to claim 1. Advantageous developments are the subject of the subclaims.

A proposed system has at least one fastener for attaching an insulation panel to a building and an associated, in the Fastener usable dowels. The system can also include the insulation panel to be attached. In this case, the fastening element is particularly preferably arranged on the insulation panel or embedded in it or in its insulation material. In particular, the fastening element is then permanently connected to the insulating board, particularly preferably before the insulating board is fastened to the structure.

The fastening element has an opening into which the anchor can be inserted in order to be able to anchor the fastening element and thus the associated insulating board to the structure.

The fastening element has, in particular, a plate-like holding section for the planar connection with or holding of the associated insulating board.

One aspect of the present invention is that the dowel in the inserted state is or is secured against twisting relative to the fastening element in a form-fitting manner on the fastening element by means of an anti-twist device. The anti-twist device prevents the dowel from turning in an undesired manner when inserting an expanding element, in particular when screwing in a screw. Such co-rotation can occur without an anti-rotation device in particular when the dowel does not find sufficient resistance to rotation in the structure. Thus, the anti-twist device supports or enables a simple, fast, reliable and/or efficient attachment of the insulation board to the structure.

The anti-twist device is arranged or formed between a conical receptacle of the fastening element on the one hand and a plug head of the plug on the other hand. This enables a simple implementation and/or secure engagement of the anti-twist device when the dowel with its dowel head is seated correctly in the conical receptacle of the fastening element, which forms an abutment.

In particular, the anti-twist device is designed in such a way that rotating the dowel enables the anti-twist device to engage or engage.

The anti-twist device is particularly preferably designed in such a way that it only acts in one direction of rotation, in particular only in the direction of rotation in which a screw is screwed in to spread the dowel open. This is conducive to optimal engagement of the anti-twist device.

The dowel has a lateral or circumferential recess on its dowel head, into which a particularly tooth-like engagement section, which is formed in particular on or on the conical receptacle of the fastening element, engages as an anti-twist device in the installed state. This allows a very simple and inexpensive implementation and/or a robust construction. In particular, a very effective anti-twist device can be implemented in a simple manner. The dowel particularly preferably has a plurality of recesses into which one or more engagement sections of the fastening element can engage. A particularly effective anti-twist device is implemented in this way.

According to another aspect of the present invention that can also be implemented independently, the dowel has a dowel head that is more flexible than the fastening element in the axial direction. In this way, it can be achieved that in the event of an excessively wide screwing of a screw into the anchor, first or primarily only the anchor, more precisely the anchor head, which rests axially on the fastening element or is supported against it, is compressed in the axial direction and at least essentially no or there is only slight axial deformation of the fastening element. Undesirable local loading or deformation of the insulation board or the insulation material of the insulation board, particularly preferably a more rigid layer of the insulation board, can be avoided even if the screw is screwed in too far or too much. Accordingly, a simple and secure fastening of the insulation board to the building is made possible or supported.

In order to achieve the flexibility of the dowel head, a circumferential recess is provided, which weakens the dowel head, particularly in the area between a receiving end for a screw head and an end facing the fastening element.

This allows for very simple manufacture. In a particularly preferred manner, the recesses are also used to form the anti-rotation lock mentioned.

According to a further aspect of the present invention, the holding element of the fastening element preferably has radial ribs and/or a reinforcing section running in a circle, in order to form the holding section in a particularly rigid manner. This allows a very good and even load distribution or introduction of force or transmission of force between the fastening element or the holding section on the one hand and the insulating board or the insulating material or a more rigid layer of the insulating board on the other hand. Accordingly, a safe and resilient or robust attachment of the insulating board is made possible or supported.

The ribs particularly preferably serve as an additional non-rotatable installation or engagement of the fastening element in the insulation panel. This in turn enables the dowel to be secured against rotation in particular, since the fastening element is then also coupled to the insulating board in a manner that is as non-rotatable as possible.

The circular reinforcement section preferably forms a peripheral edge of the holding section of the fastening element. As a result, a particularly high surface rigidity of the holding section can be achieved or supported in a simple manner.

According to yet another aspect of the present invention, the holding section preferably has a plurality of openings, the opening area of the openings being more than 10%, in particular more than 15%, particularly preferably more than 20% of the total area of the holding section. Such a large-area opening or opening in the holding section of the fastening element has proven to be advantageous despite the smaller surface contact, in particular when the insulating board is foamed against or around the fastening element in order to achieve good and uniform foaming of the insulating material, and/or when different insulating materials are used are arranged on both sides of the holding section and these materials can also be connected to one another over a relatively large area through the openings. Accordingly, a good and resilient embedding of the fastening element in the insulating board and/or a good force transmission or force distribution between the insulating board and fastening element and vice versa is made possible or supported. This in turn is conducive to a secure and robust attachment of the insulation board.

The aspects and features of the present invention mentioned above and the aspects and features of the present invention resulting from the claims and the following description can in principle be implemented independently of one another, but also in any combination.

Fig. 1

einen schematischen Schnitt eines vorschlagsgemäßen Systems mit einer Dämmplatte im Bereich eines Befestigungselements;

Fig. 2

eine schematische Draufsicht einer Außenseite der Dämmplatte mit vormontierten Befestigungselementen;

Fig. 3

einen schematischen Schnitt eines Teils des vorschlagsgemäßen Systems mit einer an einem Bauwerk angeklebten Dämmplatte beim Erzeugen einer Bohrung in das Bauwerk;

Fig. 4

einen zu Fig. 3 korrespondierenden Schnitt des Systems beim Einführen eines Dübels in die Dämmplatte;

Fig. 5

einen zu Fig. 3 korrespondierenden Schnitt des Systems mit eingeführtem Dübel;

Fig. 6

einen zu Fig. 3 korrespondierenden Schnitt des Systems mit in die Bohrung eingeführtem Dübel;

Fig. 7

einen zu Fig. 3 korrespondierenden Schnitt des Systems mit in den Dübel eingeschraubter Schraube;

Fig. 8

einen zu Fig. 3 korrespondierenden Schnitt des fertig montierten Systems bzw. der an dem Bauwerk befestigten Dämmplatte;

Fig.9

eine schematische perspektivische Ansicht des vorschlagsgemäßen Systems mit dem Befestigungselement und einem zugeordneten, noch nicht eingesetzten Dübel;

Fig. 10

einen schematischen Schnitt des Befestigungselements mit eingesetztem Dübel; und

Fig. 11

eine schematische Seitenansicht des Dübels.

Further advantages, features, properties and aspects of the present invention result from the claims and the following description of a preferred embodiment based on the drawing. It shows:

1

a schematic section of a proposed system with an insulating board in the region of a fastener;

2

a schematic plan view of an outside of the insulation panel with pre-assembled fasteners;

3

a schematic section of a part of the proposed system with a glued to a building insulation board when creating a hole in the building;

4

one to 3 corresponding cut of the system when inserting a dowel into the insulation board;

figure 5

one to 3 Corresponding section of the system with inserted dowel;

6

one to 3 Corresponding section of the system with dowel inserted into the hole;

7

one to 3 Corresponding section of the system with the screw screwed into the dowel;

8

one to 3 Corresponding section of the fully assembled system or the insulation panel attached to the building;

Fig.9

a schematic perspective view of the proposed system with the fastener and an associated, not yet used dowel;

10

a schematic section of the fastener with inserted dowel; and

11

a schematic side view of the anchor.

In the figures, some of which are not true to scale and are only schematic, the same reference numbers are used for identical, identical or similar parts and components, resulting in corresponding or comparable properties and advantages, even if a repeated description is dispensed with.

1 shows in a very schematic section, not to scale, a proposed system 1 for fastening an insulating board 2 with at least one, preferably embedded or incorporated fastening element 3. In the section according to FIG 1 only one fastener 3 is shown.

2 shows the insulation board 2 in a plan view. A number of embedded or incorporated fastening elements 3 are indicated by dashed lines.

3 shows the preferred proposed insulation system or system 1 in a very schematic section that is not true to scale, with the proposed insulation panel 2 being fastened to a building 4 by means of a fastening element 3 and in particular a dowel 5 (not shown here). is shown in 3 a section or part of the system 1 or the insulation board 2 with a fastening element 3 or in the region of a fastening element 3.

A plurality of fastening elements 3 are preferably assigned to an insulating board 2 or to each insulating board 2, as shown in the plan view according to FIG 2 shown.

In the following, reference is only made to an insulating board 2 and a fastening element 3 for fastening the insulating board 2 , even if the system 1 preferably or usually comprises a number of insulating boards 2 and/or a number of fastening elements 3 .

It is particularly preferable for a plurality of insulating panels 2 to be arranged in a butt joint and/or for a plurality of insulating panels 2 to form an insulating layer that is as continuous as possible for insulating the structure 4.

The insulating panel 2 is used in particular for thermal insulation or thermal insulation. The insulating panel 2 is made from appropriate insulating materials (thermal insulation materials), preferably from foamed materials, as already explained at the outset.

The insulating panel 2 is preferably at least essentially cuboid and/or rectangular, in particular square, in a plan view of the insulating panel 2, as shown in FIG 2 evident. However, the insulation panel 2 can in principle also have any other shape.

The insulating panel 2 usually has a thickness of several cm, in particular at least 6 cm or 10 cm and/or at most 30 cm or 16 cm.

The insulating board 2 is preferably fastened to the structure 4 with one flat side. This flat side is the side of the insulating board 2 that faces the structure 4 in the installed state and is referred to below as the structure side 2A. The flat side of the insulating panel 2 facing away from the building 4 in the installed state is referred to below as the outside 2C.

The structure 4 is in particular a building, a wall, a wall, particularly preferably an outer wall, a ceiling or the like attachable. However, between the structure 4 and the insulating board 2 - at least in certain areas, but possibly also over the entire surface - a cavity or a layer 4B, such as an intermediate layer or connecting layer, particularly preferably for leveling out unevenness and/or for connecting or gluing, as in 3 indicated to be provided.

The insulation board 2 is particularly preferably connected to the structure 4 or its surface 4A in a materially bonded manner, in particular by gluing, and/or in a non-positive manner, in particular by screwing or dowelling, or in some other way.

The surface 4A of the structure 4 can in particular be formed by plaster, masonry or the like. In particular, the surface 4A can form or represent a facade of the building 4 .

The fastening element 3 is preferably at least essentially flat, grid-like, rib-like, plate-like and/or plate-like. In particular, the fastening element 3 has a flat, grid-like, rib-like, plate-like and/or plate-like holding section 3A. In the embodiment shown, the fastening element 3 or its holding section 3A is in particular designed essentially in the manner of a disk or circular disk, as shown in FIG Figures 1, 2 and 3 apparent.

The fastening element 3 or the holding section 3A, in particular a main extension plane of the fastening element 3 or section 3A, is preferably arranged at least essentially parallel to the building side 2A.

The fastening element 3 or its holding section 3A is preferably arranged at least close to the structure in the insulating panel 2 or adjacent to or on the side 2A of the structure.

In particular, the fastening element 3 is arranged closer to the building side 2A than to the outside 2C of the insulating board 2, particularly preferably in a range of 5% to 30% of the total thickness of the insulating board 2. This relates in particular to the main extension plane of the building side 2A facing flat side of the fastener 3.

The fastening element 3 is preferably in the insulating board 2 - embedded or introduced, in particular completely - in particular already at the factory.

The insulating board 2 is preferably constructed in multiple layers or in two layers. In particular, the insulating panel 2 has a first layer 21 and a second layer 22 .

The second layer 22 is particularly preferably formed by one or more, preferably plate-shaped, elements which are let into or embedded in the first layer 21 .

The first layer 21 covers the fastening element 3 or its holding section 3A - in particular in the fastening state or after the fastening of the insulating board 2 to the building 4, as in 8 shown - preferably at least substantially on the outside, in particular completely. In particular, the first layer 21 has or forms the outside 2C.

The second layer 22 covers the fastening element 3 or its holding section 3 preferably at least essentially on the structure side, in particular completely. In particular, the second layer 22 has the structure side 2A or at least partially forms it.

The fastening element 3 or its holding section 3A is preferably arranged at least essentially on or in the area of the interface between the first layer 21 and the second layer 22 and/or in the first layer 21 .

The fastening element 3 is particularly preferably introduced, pressed, inserted or embedded into the first layer 21, very particularly preferably in such a way that the fastening element 3 ends at least essentially flush with the flat side of the first layer 21 facing the second layer 22. For this purpose, the fastening element 3 is particularly preferably inserted, inserted, pressed or foamed into depressions 2B of the first layer 21 .

In the illustrated embodiment, the fastening element 3 is preferably made of plastic and/or of a different, preferably harder, stiffer, stronger and/or more resilient material than the insulating boards 2 . Preferably, the fastener 3 is injection molded.

The first layer 21 is preferably thicker than the second layer 22, more preferably more than twice or three times as thick.

The thickness of the first layer 21 is preferably more than 80 mm, in particular more than 100 mm, particularly preferably about 120 mm or more.

The second layer 22 preferably has a thickness of more than 10 mm, in particular about 20 mm or more, and/or less than 40 mm, in particular about 30 mm or less.

The thickness of the second layer 22 is preferably about 5% to 30% of the total thickness of the insulating board 2 or both layers 21, 22.

The second layer 22 is preferably harder, stiffer, stronger and/or more resilient than the first layer 21.

The second layer 22 preferably has a higher flexural rigidity than the first layer 21, in particular at least twice the flexural rigidity.

The flexural rigidity represents a measure of the resistance of an acting force to bending deformation for a component and is preferably determined by that only the first layer 21 in the form of a plate with a predetermined size, in particular with a thickness of 20 mm and the size 50 cm x 100 cm, placed on the narrow sides, for example in an edge area of 1 cm, and centered with a predetermined weight, for example 5 kg, is loaded centrally with a defined area, preferably a circular area with a diameter of 60, 90 or 100 mm. The reciprocal of the deflection of the plate at a defined force then corresponds to the bending stiffness.

The flexural rigidity for the second layer 22 in the form of a correspondingly large and thick plate can then be determined accordingly.

Alternatively, when determining the flexural rigidity, the thickness of the panels can also correspond to the thickness of the respective layer 21 or 22 of the insulating panel 2, for example 20 to 30 mm for the second panel or layer 22 and for example about 100 to 150 mm for the first panel or , layer 21, correspond.

The material of the second layer 22 preferably has a higher compressive strength than the material of the first layer 21 . In particular, the compressive strength of the second layer 22 is more than double or triple the compressive strength of the first layer 21.

The compressive strength represents a material parameter and is preferably determined by loading the material with a stiff, round plate or the end face of a cylinder, particularly preferably with a diameter of 60, 90 or 100 mm.

In particular, the compressive strength of the material of the second layer 22 is so high that the plate or cylinder is elastic or plastic under a load of more than 1500 N, less than 5 mm, in particular less than 4 mm, particularly preferably about 3 mm or less is pressed. In contrast, the compressive strength of the material of the first layer 21 is significantly lower.

Alternatively or additionally, the flexural strength of the material of the second layer 22 is preferably greater than that of the material of the first layer 21, in particular more than twice or three times as great.

The flexural strength is preferably determined according to EN 1208:2013-06, test method B for specimens.

The density of the material of the second layer 22 is preferably higher than the density of the material of the first layer 21.

The density of the material of the first layer 21 is preferably less than 30 kg/m ³ , in particular less than 25 kg/m ³ , particularly preferably about 20 kg/m ³ or less.

The density of the material of the second layer 22 is preferably more than 30 kg/m ³ , in particular more than 50 kg/m ³ , particularly preferably about 100 kg/m ³ or more.

The first layer 21 is preferably made of a first, preferably foamed, insulating material and the second layer 22 is made of a second, preferably foamed, insulating material.

Insulating materials within the meaning of the present invention preferably have a thermal conductivity λ of less than 0.06 W/(m-K).

In particular, the thermal conductivity of the first layer 21 is lower than that of the second layer 22.

The material of the first layer 21 is particularly preferably an expanded rigid polystyrene foam, also called EPS.

The material of the second layer 22 is in particular an extruded rigid polystyrene foam, also known as XPS. However, it is also possible, for example, to use expanded polystyrene foam, ie EPS, as the material for the second layer 22 .

The insulating board 2 preferably forms a prefabricated structural unit with the embedded fastening elements 3 . However, in principle it is also possible to introduce the fastening elements 3 into the two-layer or multi-layer insulating board 2 in the desired manner on site or on the construction site, in particular with this being done through the first layer 21 or from the outside and/or by means of the or through the preferably factory-provided holes or recesses 2D.

In particular, when a load is applied, the fastening element 3 can transfer the load to the resilient or rigid second layer 22 or vice versa, with the second layer 22 covering a large area or the entire surface - in particular only with the exception in the area of the fastening elements 3 or recesses 2B - with the first layer 21 is connected and accordingly ensures a large-area load distribution and/or transfer from the second layer 22 to the first layer 21 and vice versa.

In particular, the insulation board 2 is constructed in only two layers. However, if required or optionally, the insulating board 2 can also have an additional layer, in particular on the outside 2C a cover layer made of another or other material, in particular of another foamed material, or the like.

Four fastening elements 3 per m ² of insulating board surface are particularly preferably sufficient for fastening the proposed insulating board 2 . This allows a very simple and inexpensive and quick assembly, since in particular only four screw or dowel connections must be made to the structure 4 per m ² .

The fastening element 3 preferably has an opening 3B in order to connect the fastening element 3 to the structure 4 in a positive and/or non-positive manner, in particular by screwing and/or by means of a dowel connection.

The opening 3B is preferably arranged centrally on or in the fastening element 3 and/or in particular is already formed in the fastening element 3 during production, but can alternatively only be formed or opened on site when the insulating board 2 is fastened to the structure 4, for example by drilling .

The fastening element 3 preferably has a positioning means, which is formed here in particular by a projection 3C. The positioning means or the projection 3C preferably serves to position the fastening element 3 on the insulating board 2 or the first layer 21 and/or to position, guide and/or support a connecting means, such as a dowel 5 and/or a screw 6, for the connection of the fastening element 3 with the structure 4.

As already explained, the insulating panel 2, in particular the first layer 21, preferably has at least one recess 2D, in particular with an at least essentially cylindrical shape or in the form of a bore, preferably with the recess 2D for receiving or positioning the fastening element 3 , in particular the projection 3C, and/or is provided for fastening the insulating board 2 to the building 4 from the outside or the outside 2C, as explained in more detail below.

The fastening element 3 is or is preferably introduced with its positioning means or projection 3C into the associated recess 2D of the insulating board 2 or foamed and/or arranged coaxially thereto.

The recess 2D preferably extends transversely or perpendicularly to the board plane or main extension plane of the insulation board 2 and/or from the outside 2C in the direction of the fastening element 3 or towards the building side 2A, in particular up to the fastening element 3.

The recess 2D is particularly preferably formed or provided only in the first layer 21, as in particular in the schematic section according to FIG 1 implied. 3 shows, however, the insulating board 2 already attached to the building 4 or at least initially temporarily fastened, in particular only glued on, with a drilled through second layer 22 and a drilled through building 4.

In the illustrated embodiment, the positioning means or the projection 3C is preferably integrally molded or molded onto the fastening element 3 and/or arranged on the insulating board side. In particular, the projection 3C adjoins or forms the opening 3B of the fastening element 3 on the insulating board side.

The projection 3C is preferably sleeve-like or hollow-cylindrical and/or thick-walled.

The positioning means or the projection 3C is preferably provided with an inner insertion bevel 3D. This is in particular at least essentially conical. However, this can also be formed by guide ribs, bevels or the like distributed over the circumference.

The positioning means or the projection 3C is preferably designed to be relatively short. In particular, the axial length of the positioning means or projection 3C is more than 0.5 cm and/or less than 4 cm. The positioning means or the projection 3C is in particular short in relation to the thickness of the insulating board 2 or the length of the opening 2D. However, the positioning means or the projection 3C can also be made longer, in particular for better guidance.

The diameter of the recess 2D is preferably more than 25%, in particular more than 50%, larger than the inner diameter of the opening 3B, so that the insertion of the dowel 5 and the screw 6 or another connecting element is facilitated.

The attachment of the insulating board 2 to the building 4 is described below with reference to FIG Figures 3 to 8 explained in more detail.

The insulating board 2--particularly pre-assembled or provided with fastening elements 3--is preferably fastened to the structure 4 in a form-fitting and/or non-positive manner, in particular by screwing or dowelling.

The insulation board 2 is particularly preferably first glued to the structure 4 or its surface 4A. In this way, a first or alternative or temporary connection of the insulating board 2 to the structure 4 is achieved. The optional layer 4B is preferably used for gluing and/or leveling out unevenness or the like.

However, the first or temporary connection can also take place in any other suitable way or, alternatively, can be achieved by holding the respective insulation panel 2 on the structure 4 .

The fastening element 3 is then connected to the structure 4 (permanently or with a high load capacity or additionally), preferably in a non-positive and/or positive manner, in particular by screwing or a dowel connection or in some other suitable manner. This connection of the insulating panel 2 in addition to the gluing is preferably carried out with several or all fastening elements 3, even if this is described below for only one fastening element 3 as an example.

In the proposed method or the illustrated embodiment, for (permanently) attaching the insulation board 2 to the structure 4, a hole 4C is produced or drilled in the structure 4, preferably through the attachment element 3 and/or the insulation board 2, overall the additional layer 22 .drilled into structure 4 as in 3 shown.

The bore 4C is preferably produced in the insulating panel 2 and/or the structure 4 by means of a tool, in particular a drill 9, as shown in FIG 3 shown.

The drill 9 is particularly preferably designed as a masonry or concrete drill and/or universal drill.

The drill bit 9 is preferably so long that the structure 4 can be drilled through the insulating board 2 . The drill 9 particularly preferably has a length of at least 10 cm or 20 cm, in particular at least 25 cm.

As already explained at the outset, the system or kit 1 for fastening the insulating board 2 to the building 4 preferably has at least one protective sleeve 8 and/or a protective sleeve 8 is used at least temporarily in the proposed method for fastening the insulating board 2 to the building 4 or used.

Optionally, a protective sleeve 8 is used to protect the insulating board 2 - at least in the area of the recess 2D or laterally around the protective sleeve 8 - from damage by the drill 9 and/or the drill 9 in the insulating board 2 or to the fastening element 3 or to align and/or guide or store it radially or its opening 3B or insertion bevel 3D.

Particularly preferably, the protective sleeve 8 is at least partially inserted or introduced into the insulating board 2 or recess 2D from the side or outer side 2C facing away from the structure 4, in particular together with the drill 9.

The protective sleeve 8 protects in particular the (soft) insulating material surrounding the recess 2D against damage when the drill 9 is inserted into the recess 2D and/or during drilling.

After drilling or creating the hole 4C, the drill 9 is removed or pulled out of the insulation board 2, particularly together with the protective sleeve 8.

In a second process step, the dowel 5, preferably with a preassembled expansion element, in particular with a partially screwed-in screw 6, is then inserted into the insulating board 2 or its recess 2D. This can be done very easily manually and is very easy to do in particular because of the relatively large diameter of the cutout 2D. A tool 7 is then preferably used for further insertion. This is an example in 4 shown corresponding to a schematic section (detail). 3 shows.

For example, a screwdriver or other hand tool available on the construction site can be used as the tool 7 . Preferably, however, a tool 7 is used, which can preferably be used both for (correct) insertion and for bracing or tightening the dowel connection, in particular for screwing it in.

The tool 7 preferably has a tool head 7A, a shank 7B, a first guide section 7C, a second guide section 7D, a first marking means 7E and/or a second marking means 7F.

The tool head 7A is preferably a bit, a so-called hexagonal or other insert or polygonal key, which can be brought into engagement with the expansion element or the screw 6 or its screw head 6A in a form-fitting or non-rotatable manner and/or which preferably is exchangeable.

The tool 7 or the shank 7B is preferably designed to be accommodated in a screwdriver or the like and/or is preferably designed as a polygon at least in some areas.

The first guide section 7C is preferably formed by a corresponding body, preferably made of plastic, and/or is arranged in the area of a receptacle for the tool head 7A. The first guide section 7C allows, in particular, lateral guidance and/or centering of the tool head 7A, in particular for centric alignment with the screw head 6A. The screw 6 in turn is screwed through the fastening element 3 or the opening 3B or the insertion bevel 3D is held or guided centrally or coaxially, in particular by means of the dowel 5 inserted therein or the dowel 5 resting thereon.

The second guide section 7D is preferably axially adjustable, in particular by means of a grub screw or the like, which is not shown, can be fixed on the tool 7 or its shaft 7B, in particular for adaptation to different insulating board thicknesses. The second guide section 7D allows, in particular, additional lateral guidance in the recess 2D or in the insulating material when screwing in the screw 6.

The first marking means 7E is preferably formed by a marking, a shoulder or the like.

The second marking means 7F is preferably formed by a marking, a shoulder, a stop or the like, as in 2 implied.

The two marking means 7E and 7F are preferably axially adjustable, in particular for adapting to different insulating board thicknesses, dowel lengths and/or screw lengths. The axial adjustability can be achieved in particular in that the first and/or second marking means 7E, 7F is/are adjustable together with the second guide section 7D or is/are formed by it. However, the marking means 7E, 7F can also be formed and/or adjusted separately.

4 shows in one too 3 Corresponding, schematic section shows a state in which the dowel 5, together with the screw 6, which is preferably already partially screwed into the dowel 5, has been inserted or pushed in, for example by means of the tool 7, so that the front end of the dowel 5 in the direction of insertion is already in the Proximity of the fastener 3 or projection 3C or the chamfer 3D is located. However, the dowel 5 and the screw 6 are still on the inside of the recess 2D of the insulating board 2, so they are not yet centrally guided or aligned. Rather, here the screw 6 or its head 6A and in particular also the dowel 5 is offset radially or transversely to the tool head 7A.

figure 5 shows a state in which the dowel 5 has already been inserted or pushed in so far, in particular by means of the tool 7, that the front end of the dowel 5 in the direction of insertion already has the fastening element 3 or the The beginning of the opening 3B of the fastening element 3 or the insertion bevel 3D is reached. During the insertion and until this state is reached, the dowel 5 or its expanding element, here the screw 6, and/or another connecting means or element is separated from the recess 2D or from the insulating board 2 or from the insulating material of the insulating board 2 guided laterally (unless the protective sleeve 8 remains in the insulation board 2, which is also possible as an option). The insertion bevel 3D and the adjoining opening 3B then serve in particular for (further) centering or axial positioning or guidance of the dowel 5 and thus also of the screw 6. Accordingly, in the representation according to FIG figure 5 the screw 6 with its head 6A already aligned coaxially in the preferably centrally guided tool head 7A.

6 shows in one too Figures 3 to 5 Corresponding, schematic section, the fastening of the insulating board 2 or the fastening element 3 to the building 4, with the dowel 5 now being fully inserted, in particular with the dowel 5 with its dowel head 5A on the fastening element 3 or projection 3C or on the insertion bevel 3D comes to the plant. This fully inserted state is preferably indicated to a user (not shown) by the first marking means 7E, in the example shown in particular by the fact that the marking means 7E lies in the plane of the outside 2C of the insulation panel 2, as in FIG 6 implied. However, other markings are also possible.

After the (complete) introduction or insertion of the dowel 5, the dowel 5 is spread in the structure 4 or borehole 4C. This is done with the help of the expansion element, here in particular by (further) screwing in the screw 6. In the expanded state, the dowel connection is made. This state is in 7 in one to the Figures 3 to 6 corresponding section shown schematically. Here the screw 6 is completely screwed into the dowel 5 . The screwing in is done in particular by means of the tool 7 . This screwed-in state is preferably indicated by the second marking means 7F, here in particular by the fact that a shoulder or a stop lies in the plane of the outside 2C or comes to rest on it.

When screwed in, the screw 6 with its screw head 6A preferably comes to rest on the dowel head 5A and/or on the fastening element 3 or projection 3C or its insertion bevel 3D.

Instead of the screw 6, however, another expansion means, for example a bolt to be driven in, can be used to expand the dowel 5 or the like.

In the entire way, the insulation panel 2 is firmly connected to the structure 4 via the fastening element 3, in particular doweled, and the clearing panel is also held sufficiently securely on the structure 4 or from the structure 4 as a result.

After the fastening element 3 has been fastened to the building 4, in particular after the dowel connection has been made or the screw 6 has been screwed in completely, the tool 7 is removed and the recess 2D in the insulating panel 2 is closed. This closure is preferably carried out by a plug 2E, as in 8 implied.

The plug 2E is preferably inserted in a clamping manner into the insulating panel 2 or its recess 2D. For example, gluing is also possible.

The plug 2E preferably consists of the same insulating material as the insulating panel 2 or of a similar insulating material. If necessary, the plug 2E can also consist of an insulating material with better thermal insulation than the insulating board 2, since the length of the plug 2E is less than the thickness of the insulating board 2.

Closing the opening or depression 2D with an insulating, in particular heat-insulating plug 2E can prevent or at least reduce the formation of a thermal bridge in the region of the opening or depression 2D.

The preferred use of the same or similar insulating material for the plug 2E as for the insulating board 2 has the advantage that no different materials are introduced into the insulating board 2 . This is particularly advantageous with regard to covering the outside or plastering the system 1 or the insulating board 2 on the outside, since markings that otherwise often occur in the area of openings or fastening elements can be avoided. Furthermore, the use of this material is advantageous in that only single-variety material is present in the insulation panel 2 if the insulation panel 2 later has to be disposed of (the fastening elements 3 are only on a flat side or the building side 2A, so the insulation board 2 can be removed from the fastening elements 3).

In 8 is indicated schematically that the proposed system 1 or the proposed insulation panel 2 is preferably covered on the outside, in particular by a plaster 2F. This plaster 2F is in particular a material or a structure based on minerals, plastic or the like, which is preferably reinforced by a fabric.

The plaster 2F is preferably made very thin and in particular forms a relatively hard surface compared to the insulating material or the insulating board 2 and/or protects the insulating board 2 from environmental influences such as driving rain, compressive stress, solar radiation or the like.

The proposed system 1 for fastening the insulating board 2 preferably comprises at least one fastening element 3, in particular also an associated dowel 5 and optionally also the insulating board 2 to be fastened itself. In the latter case, the fastening element 3 is in particular already arranged on the insulating board 2 at the factory or with this connected, particularly preferably integrated in the manner already described in the insulating board 2, embedded or foamed. Particularly preferably, the fastening element 3 is held or positioned in particular via its positioning means or the opening 3B and/or the projection 3C and is then foamed around by the insulating material or foamed into it.

A preferred structure of the fastening element 3 and/or dowel 5 is explained in more detail below with reference to the further figures.

9 shows the fastening element 3 and the associated dowel 5 in a schematic, perspective and exploded view, with the dowel 5 being shown only partially or incompletely.

10 shows in a schematic section the fastening element 3 with the inserted or plugged-in dowel 5, the dowel 5 also being shown incomplete or cut off here.

11 shows the complete anchor 5 in a schematic side view.

The fastening element 3 or the holding section 3A preferably has radial ribs 3E and/or a reinforcing section 3F which is preferably circular or runs along a radius, as in particular in 9 shown, preferably in order to form the flat holding section 3A as or largely as possible or largely flat or rigid.

The reinforcement section 3F preferably forms a peripheral edge of the holding section 3A.

The reinforcement section 3F or the edge of the holding section 3A can be thickened and/or bevelled.

The ribs 3E preferably extend from the central projection 3C to the edge of the holding portion 3A and/or to the reinforcing portion 3F.

The ribs 3E are preferably web-like or designed as flat plate sections. Their main or surface extension planes preferably each run radially and in the axial direction. This is preferably conducive to a largely non-rotatable coupling of the fastening element 3 to the insulating panel 2, since the insulating material can engage between the ribs 3E and can thus fix the fastening element 3 in its rotational position.

The fastening element 3 or the holding section 3A is at least essentially flat or planar on its side facing the building 4 or on its side facing away from the positioning means or projection 3C or the insertion bevels 3D. This is particularly conducive to forming the second layer 22 or the insulating layer of the insulating board 2 lying below the holding section 3A on the structure side with as uniform a thickness as possible. This in turn is advantageous with regard to the uniform introduction and distribution of force.

The panel plane or surface extension level of the holding section 3A preferably runs radially and/or parallel to the flat sides of the insulating panel 2.

The ribs 3E are preferably arranged on the side of the holding section 3A facing away from the structure 4 .

The fastening element 3 is preferably formed in one piece together with the projection 3C, the ribs 3E and/or the reinforcing portion 3F.

The projection 3C, the ribs 3E and/or the reinforcement section 3F are particularly preferably formed on.

The flexural rigidity of the fastening element 3 or the holding section 3A is preferably more than 50% and in particular more than 100% greater than the flexural rigidity of the second layer 22 or other insulating material layer of the insulating board 2 located below the holding section 3A on the structure side.

The holding portion 3A preferably has a plurality of openings 3G. These are arranged in particular between the ribs 3E.

The openings 3G represent openings 3B of the at least essentially plate-shaped holding section 3A.

The opening area of the openings 3G is preferably more than 10%, more preferably more than 15%, more preferably more than 20% of the total area of the holding portion 3A. The entire area is here in particular the circular area formed by the edge of the holding section 3A minus the cross-sectional area of the opening 3B of the fastening element 3 or is that area of the holding section 3A which would bring about an axial abutment of the fastening element 3 in the insulating material without openings 3G.

In the illustrated example, the opening area is even more than 25% of the entire area of the holding portion 3A.

The openings 3G are preferably at least essentially circular and/or distributed over a circle or circumference of the holding section 3A.

The openings 3G each have a diameter that is preferably more than twice as large, in particular more than three times as large as the diameter of the openings 3B and/or is more than 1 cm, in particular more than 1.5 cm.

The relatively large openings 3G and / or the relatively large opening area is or is surprisingly better integration and / or fixing of the fastener 3 in the insulating board 2 is achieved, although the remaining or effective area of the holding portion 3A is remarkably reduced. This can be explained in particular by the fact that the insulating material can be foamed better or more evenly, especially when using foamed plastic, and/or can better connect to the insulating material on the respective other side of the holding section 3A through the opening(s) 3G. In particular, the two layers 21 and 22 can therefore connect through the openings 3G.

The diameter of the holding section 3A is preferably more than 6 cm, in particular more than 7 cm and particularly preferably more than 8 cm.

The diameter of the holding section 3A is preferably more than twice, in particular more than three times and particularly preferably about four times the diameter of the projection 3C or the associated recess 2B.

In the inserted state, the dowel 5 is preferably secured or can be secured in a form-fitting manner on the fastening element 3 against twisting relative to the fastening element by means of an anti-rotation device 10, as in 10 indicated schematically.

In the example shown, the insertion bevel 3D of the fastening element 3 or projection 3C forms in particular an abutment or a conical receptacle for a dowel head 5A of the dowel 5. The dowel head 5A here denotes the end of the dowel 5 on which the associated expansion element, here the screw 6 , into which dowel 5 is inserted.

The dowel 5 or the dowel head 5A preferably has at least one recess 5B for forming the anti-twist device 10 .

The recess 5B is preferably arranged on the outside and/or preferably extends at least essentially in the radial direction or towards a dowel shank 5C of the dowel 5 .

The dowel shank 5C is preferably slotted at its end opposite the dowel head 5A, for example through a slot 5D, and/or designed in some other way in order to enable the desired expansion in the installed state, i.e. in the borehole 4C, with the expansion element in particular fully inserted.

The dowel head 5A has a larger diameter than the dowel shank 5C.

A shoulder 5E is preferably formed at the transition from the dowel shank 5C to the dowel head 5A. The shoulder 5E is preferably at least essentially complementary or similarly conical in design to the insertion bevel or receptacle 3D of the fastening element 3 .

The dowel 5 or dowel head 5A preferably rests with the shoulder 5E in the installed state on the fastening element 3 or the abutment formed by the receptacle 3D in order to secure the fastening element 3 in the installed state in a form-fitting manner in the axial direction against moving away from the structure 4 .

The recess 5B preferably extends into the shoulder 5E and/or is primarily arranged or formed there.

The recess 5B is preferably designed in the manner of a slit and/or in the manner of a sawtooth.

The recess 5B is preferably formed in such a way that it has a flank which runs in the axial direction with respect to the central axis or longitudinal axis A of the dowel 5, as in FIG 11 implied. The other flank is preferably inclined thereto, ie not in the axial direction like the other flank.

The dowel 5 or dowel head 5A preferably has two or more recesses 5B distributed over the circumference.

In order to form the preferably form-fitting anti-twist device 10, the fastening element 3 or the conical receptacle 3D preferably has at least one engagement section 3H in the example shown, which in particular protrudes and protrudes axially and/or has a tooth-like design and/or is designed in such a way that it engages in a recess 5B is possible when the dowel 5 is inserted or is mandatory.

The state "inserted dowel" describes the in Figures 6, 7 and 8th shown state when the anchor 5 with its anchor head 5A or its shoulder 5E rests against the abutment formed by the fastening element 3, here on the insertion bevel or receptacle 3D.

The said engagement of the anti-rotation device 10 or an engagement section 3H in a recess is in particular positive with regard to a rotation of the dowel 5 around the 10 indicated axis A relative to the fastening element 3.

The form-fitting engagement preferably takes place in only one direction of rotation, namely in the direction of rotation in which the engagement section 3H comes to rest on the axially running flank of the associated recess 5B. In the opposite direction of rotation, the engagement section 3H can slide off the inclined flank.

The anti-twist device 10 therefore preferably only acts in one direction of rotation, in particular only in the direction of rotation in which the screw 6 is screwed into the dowel 5 for spreading.

Two or more engagement sections 3H are preferably arranged or formed on the fastening element 3 on the receptacle 3D.

The engagement sections 3H are preferably formed on or in one piece with the fastening element 3 or the projection 3C or the receptacle 3D.

In the illustrated example, the engagement sections 3H preferably form projections which engage in the indentations formed by the recesses 5B to form the anti-twist device 10 . However, other constructive solutions are also possible. In particular, a kinematic reversal is also possible in that projections of the dowel 5 engage in depressions of the fastening element 3 .

The anti-twist device 10 is arranged or formed between the conical receptacle 3D and the dowel head 5A or shoulder 5E.

The anti-twist device 10 or at least one engagement section 3H is preferably arranged or formed on the abutment which extends radially outwards, here the receptacle 3D of the fastening element 3 .

The proposed anti-twist device 10 is very robust and/or can be implemented easily.

The dowel head 5A is designed to be more flexible in the axial direction than the fastening element 3 or the projection 3C or than the abutment for the dowel 5 formed by the fastening element 3 as a whole.

The desired axial resilience is achieved in that the dowel head 5A is compressed in the axial direction, through corresponding weakening through the recesses 5B and axial deformation under (excessive) loading.

Alternatively or additionally, the dowel head 5A can also be designed to be particularly flexible or compressible in that its conically widening opening for receiving the screw head 6A has a smaller opening angle to the axis A than the receptacle 3D to the axis A. This supports a radial deflection or deformation of the dowel head 5A and facilitates axial yielding or upsetting.

In this way it can be achieved that the dowel head 5A is more flexible than the fastening element 3 in the axial direction. This is particularly advantageous with regard to the fact that if the expansion element is inserted too far or the screw 6 is screwed in too far, essentially no or only small forces or deformations are transmitted to the fastening element 3 and thus also to the insulating board 2 . Thus, even if the screw 6 is screwed in excessively, a defined and desired load-bearing behavior and/or a desired maximum load or deformation of the insulating board 2 can be maintained.

Individual aspects and features of the present invention and individual method steps can be implemented independently of one another, but also in any combination and/or sequence.

Reference list:

1

system / kit

2

insulation board

2A

building side

2 B

deepening

2C

outside

2D

recess

2E

Plug

2F

plaster

21

first layer

22

second layer

3

fastener

3A

Section

3B

breakthrough

3C

head Start

3D

Lead-in bevel / recording

3E

rib

3F

reinforcement section

3G

opening

3H

engagement section

4

structure

4A

surface

4B

layer

4C

drilling

5

dowel

5A

dowel head

5B

recess

5C

dowel shank

5D

slot

5E

shoulder

6

screw

6A

screw head

7

Tool

7A

tool head

7B

shaft

7C

first guide section

7D

second guide section

7E

first marker

7F

second marker

8th

protective sleeve

9

drill

10

anti-rotation device

A

axis

Claims (11)

1. System (1) for fastening an insulating panel (2) to a structure (4),

   wherein the system (1) comprises at least one fastening element (3) connectable to the insulating panel (2) and a dowel (5) associated with the fastening element (3),

   wherein the fastening element (3) has an opening (3B) into which the dowel (5) is insertable in order to dowel the fastening element (3) and thus the associated insulating panel (2) to the structure (4),

   wherein the fastening element (3) has a preferably plate-like holding portion (3A) for flat connection to and/or holding of the insulating panel (2),

   characterised

   in that the dowel (5) in the inserted state is secured or securable positively to the fastening element (3) against rotation relative to the fastening element (3) by means of an anti-rotation device (10) arranged and/or formed between a conical receptacle (3D), which the fastening element (3) has for a dowel head (5A) of the dowel (5) for axial abutment of the dowel (5) in the installed state, and the dowel head (5A), wherein the dowel head (5A) has a recess (5B) on the circumferential side in which an engagement portion (3H) of the fastening element (3) engages or can engage as an anti-rotation device (10) in the installed state, and/or

   in that the dowel (5) has a dowel head (5A) which is more yielding in the axial direction than the fastening element (3), wherein the dowel head (5A) has a recess (5B) on the circumferential side which weakens the dowel head (5A), and/or wherein the dowel head (5A) has a conically widening opening for receiving a screw head (6A), which opening has a smaller opening angle to the longitudinal axis (A) of the dowel (5) than a conical receptacle (3D) to the longitudinal axis (A), the fastening element (3) having the receptacle for the dowel head (5A) for axial abutment of the dowel (5) in the installed state.
2. System according to claim 1, characterised in that the holding portion (3A) of the fastening element (3) has radial ribs (3E) and/or a circularly extending reinforcing portion (3F).
3. System according to claim 2, characterised in that the reinforcing portion (3F) forms a peripheral edge of the holding portion (3A).
4. System according to claim 2 or 3, characterised in that the holding portion (3A), the ribs (3E) and the reinforcing portion (3F) as well as preferably the receptacle (3D) for the dowel head (5A) are formed in one piece.
5. System according to one of the preceding claims, characterised in that the holding portion (3A) has a plurality of openings (3G), the opening area of the openings (3G) being more than 10% of the total area of the holding portion (3A).
6. System according to claim 5, characterised in that the openings (3G) are arranged between the ribs (3E).
7. System according to one of the preceding claims, characterised in that the fastening element (3) has a projection (3C) and/or an insertion slope (3D), which projection and/or insertion slope projects from the holding portion (3A) on the side facing away from the structure (4).
8. System according to one of the preceding claims, characterised in that the anti-rotation device (10) only acts in one direction of rotation, in particular only in the direction of rotation in which a screw (6) is screwable into the dowel (5) for expansion.
9. System according to one of the preceding claims, characterised in that the system (1) comprises the insulating panel (2).
10. System according to claim 9, characterised in that the fastening element (3) is arranged close to the structure on or in the insulating panel (2).
11. System according to claim 9 or 10, characterised in that the fastening element (3) is embedded or foamed into the insulating panel (2) with its holding portion (3A), in particular between two layers (21, 22) of the insulating panel (2).

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