EP0528119A1 - Fixing element to fix insulating elements - Google Patents

Fixing element to fix insulating elements Download PDF

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Publication number
EP0528119A1
EP0528119A1 EP92109049A EP92109049A EP0528119A1 EP 0528119 A1 EP0528119 A1 EP 0528119A1 EP 92109049 A EP92109049 A EP 92109049A EP 92109049 A EP92109049 A EP 92109049A EP 0528119 A1 EP0528119 A1 EP 0528119A1
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EP
European Patent Office
Prior art keywords
pressure plate
dowel
fastening element
element according
fastening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92109049A
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German (de)
French (fr)
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EP0528119B1 (en
Inventor
Ernst Hermann Dipl.-Ing. Riecke
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Ejot Kunststofftechnik GmbH and Co KG
Original Assignee
Ejot Kunststofftechnik GmbH and Co KG
Ejot Adolf Boehl GmbH and Co KG
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Publication of EP0528119A1 publication Critical patent/EP0528119A1/en
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Publication of EP0528119B1 publication Critical patent/EP0528119B1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/762—Exterior insulation of exterior walls
    • E04B1/7629—Details of the mechanical connection of the insulation to the wall
    • E04B1/7633—Dowels with enlarged insulation retaining head
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/36—Connecting; Fastening
    • E04D3/3601—Connecting; Fastening of roof covering supported by the roof structure with interposition of a insulating layer
    • E04D3/3603—Connecting; Fastening of roof covering supported by the roof structure with interposition of a insulating layer the fastening means being screws or nails
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0801—Separate fastening elements
    • E04F13/0832—Separate fastening elements without load-supporting elongated furring elements between wall and covering elements
    • E04F13/0833—Separate fastening elements without load-supporting elongated furring elements between wall and covering elements not adjustable
    • E04F13/0835—Separate fastening elements without load-supporting elongated furring elements between wall and covering elements not adjustable the fastening elements extending into the back side of the covering elements

Definitions

  • the invention relates to a fastening element for fastening insulating elements, with a pressure plate, a dowel and an expansion element that can be inserted into the dowel through the pressure plate.
  • Fastening elements of the type mentioned are known for example from DE-PS 30 45 986 or EP-B1-74 469.
  • an abutment arranged on the outside of the insulating element must be created in order to be able to introduce the fastening forces into the insulating element.
  • this abutment is formed by a pressure plate, which rests on the outside of the insulating element and is anchored in the masonry or the wall via the dowel and the expansion element. This results in the need to transmit the holding forces to the insulating element via the pressure plate. From that again follows that the pressure plate must have sufficient strength to avoid damage even with large forces. Such large forces occur, for example, as wind forces or wind suction forces, which can have considerable values, particularly in the case of large building facades.
  • the invention has for its object to provide a fastener of the type described, which has a high strength, is easy to assemble and ensures a secure mounting of insulating elements with a minimum number of fasteners per m2, applicable even with a small thickness of the plaster and also is mountable below the reinforcement mesh.
  • the object is achieved in that the pressure plate is designed as an essentially flat, flat plate with a small, substantially constant thickness and is made of a high-strength plastic.
  • the fastening element according to the invention is characterized by a number of considerable advantages. Due to the flat, plate-like configuration, the fastening element protrudes only very slightly above the surface of the insulating element, so that there are no problems with regard to the application of the plaster. In addition, only a few dowels are required because the pressure plate can be formed over a large area because of their great strength. In particular, it is possible according to the invention to cover the fastening elements and / or the insulating element with a glass fiber mat (reinforcing fabric), which serves to anchor the plaster. The large area of the pressure plate ensures secure anchoring even with insulating elements which consist of fibers arranged perpendicular to the plane of the insulating element.
  • the inventive manufacture of the pressure plate from a high-strength material means that the stiffening ribs known from the prior art can be dispensed with, so that for the first time a very flat pressure plate was created which only protrudes to the smallest extent beyond the level of the insulating element.
  • the person skilled in the art had always considered it necessary to make the pressure plate convex and to provide it with stiffeners or thickened parts. According to the invention, a completely different path is now followed, namely a high-strength printing plate of larger diameter is used.
  • the pressure plate is provided with a large number of recesses. These recesses serve as penetration openings for anchoring the plaster layer to be applied, so that a secure anchoring of the plaster is ensured even with a larger area of the pressure plate.
  • the cross sections of the openings are designed so that a toothing, i. H. a positive connection with the plaster is obtained.
  • the recesses are arranged uniformly distributed over the entire surface of the printing plate and the printing plate is thus designed in a grid-like manner.
  • the individual ribs of this grid-like design of the pressure plate ensure a high degree of strength and bending stiffness. Very high wind suction forces can thus also be absorbed by the pressure plate.
  • the pressure plate is preferably made of a high quality plastic. This can advantageously have a glass fiber content of more than 30%, preferably more than 50%.
  • Polyamide is a suitable plastic for manufacturing the printing plate, but other plastics with corresponding properties can also be used. It is particularly advantageous if the plastic is self-extinguishing, so that there are no disadvantages with regard to fire protection regulations.
  • the pressure plate To connect the pressure plate to the dowel, it is preferably provided with a central, tubular extension through which the expansion element can be inserted into the dowel.
  • the pressure plate may be advantageous if the pressure plate is formed in one piece with the dowel. In this way, in particular the penetration of moisture into the masonry can be avoided.
  • the tubular extension for covering a head of the expansion element can be closed by means of a cover.
  • This protects the expansion element from corrosion, and on the other hand, the effect of moisture on the masonry is suppressed.
  • the cover can be formed in one piece with the pressure plate, wherein it is connected in a hinge-like manner to the pressure plate or the tubular extension via the connection area is.
  • the bore in the tubular extension is advantageously larger than the outer diameter of the dowel, whereby on the one hand axial forces can be transmitted to the pressure plate via the dowel, but on the other hand a certain radial play is obtained between the dowel shaft and the dowel plate.
  • This game is then advantageous to avoid dowel force swings that can result from system deformations.
  • At least three centering ribs are advantageously arranged in the bore of the tubular extension, which center the anchor shaft in the unloaded state, so that the handling of the anchor is simplified. These centering ribs consist either of a soft or a hard material, so that they are either deformed themselves or penetrate into the material of the dowel shaft, so that a relative movement of the dowel in the radial direction is possible relative to the pressure plate.
  • the fastening element according to the invention is thus of a very simple construction and can be produced inexpensively using the simplest devices. Furthermore, the assembly of the fastening element is very simplified, since it lies against the insulating element with a large area. Thus, compared to the prior art, only a very small number of fastening elements per m2 are required to achieve the same level of strength.
  • Nails, screws or pins can be used as expansion elements, which can optionally be provided with a covering in order to ensure a sealing contact at least in the outer region of the dowel and the pressure plate.
  • a first embodiment of the fastener according to the invention is shown.
  • This comprises a pressure plate 2, which is designed as a circular disk-shaped, flat plate.
  • the pressure plate 2 is provided with a recess 9, through which a spreading element 4, which is provided with a head 7, can be passed.
  • the central area of the pressure plate 2 is connected in one piece to a tubular extension 6 which merges into a dowel 3. It is also possible to manufacture the dowel 3 separately from the pressure plate.
  • the pressure plate and dowels are then locked together.
  • the dowel is designed as a conventional expansion dowel, the expansion element 4 can be designed in the form of a screw.
  • 1 shows a preassembled state in which the dowel 3 has not yet been spread.
  • the fastening element can thus be pushed through an insulating element 1 (insulating mat or insulating plate) and inserted into a borehole 10 which has been introduced into a masonry 11 in order to anchor the insulating element 1.
  • Fig. 2 shows a fully assembled state in which the dowel 3 is spread so that the fastening element is anchored in the masonry 11.
  • the head 7 of the expansion element 4 is completely inserted into the recesses 9, so that there is a substantially flat outer surface.
  • Fig. 3 shows a plan view of the pressure plate 2 according to the invention.
  • the pressure plate 2 is designed like a grid and has a plurality of uniformly arranged recesses 5, which for anchoring a plaster, not shown, to be subsequently applied to the insulating element 1 serves.
  • FIGS. 1-3 show a modified embodiment which differs from the embodiment of FIGS. 1-3 only by a cover 8.
  • the same parts have been given the same reference numbers, so that a repeated description can be omitted.
  • the cover 8 is formed in one piece with the pressure plate 2 in the region of the recess 9 and, as shown in FIG. 5, can be pivoted after completion of the assembly process in order to completely close the recess 9. This prevents moisture from entering the dowel cavity prevented, at the same time the head 7 of the expansion element 4 is covered towards the environment.
  • the dowel 3 and / or the cover of the pressure plate 2 is advantageously produced from an elastic thermoplastic in the injection molding process.
  • the cover also forms additional insulation and excludes a thermal bridge.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Insulators (AREA)
  • Dowels (AREA)

Abstract

The invention relates to a fixing element to fix insulating elements (1), having a pressure plate (2), a plug (3) and an expanding element (4) which can be introduced through the pressure plate (2) into the plug (3). In order to be able to anchor the insulating elements reliably using a small number of fixing elements with a high degree of assembly safety, provision is made for the pressure plate (2) to be constructed as a substantially planar, flat plate with a small substantially constant thickness, to have a large area and to be made of a high-strength material. <IMAGE>

Description

Die Erfindung bezieht sich auf ein Befestigungselement zur Befestigung von Isolierelementen, mit einer Druckplatte, einem Dübel und einem durch die Druckplatte in den Dübel einbringbaren Spreizelement.The invention relates to a fastening element for fastening insulating elements, with a pressure plate, a dowel and an expansion element that can be inserted into the dowel through the pressure plate.

Befestigungselemente der genannten Art sind beispielsweise aus der DE-PS 30 45 986 oder der EP-B1-74 469 vorbekannt.Fastening elements of the type mentioned are known for example from DE-PS 30 45 986 or EP-B1-74 469.

Um Isolierelemente, insbesondere Isoliermatten oder Isolierplatten an Außenwänden von Gebäuden zu befestigen, muß ein auf der Außenseite des Isolierelementes angeordnetes Widerlager geschaffen werden, um die Befestigungskräfte in das Isolierelement einleiten zu können. Dieses Widerlager wird bei den bekannten Befestigungselementen durch eine Druckplatte gebildet, welche an der Außenseite des Isolierelementes anliegt und über den Dübel und das Spreizelement in dem Mauerwerk oder der Wand verankert ist. Daraus ergibt sich die Notwendigkeit, die Haltekräfte über die Druckplatte auf das Isolierelement zu übertragen. Daraus wiederum folgt, daß die Druckplatte eine ausreichende Festigkeit aufweisen muß, um Beschädigungen auch bei großen Kräften zu vermeiden. Derartige große Kräfte treten beispielsweise als Windkräfte oder Windsogkräfte auf, welche besonders bei großflächigen Gebäudefassaden erhebliche Werte aufweisen können.In order to fasten insulating elements, in particular insulating mats or insulating plates, to the outside walls of buildings, an abutment arranged on the outside of the insulating element must be created in order to be able to introduce the fastening forces into the insulating element. In the known fastening elements, this abutment is formed by a pressure plate, which rests on the outside of the insulating element and is anchored in the masonry or the wall via the dowel and the expansion element. This results in the need to transmit the holding forces to the insulating element via the pressure plate. From that again follows that the pressure plate must have sufficient strength to avoid damage even with large forces. Such large forces occur, for example, as wind forces or wind suction forces, which can have considerable values, particularly in the case of large building facades.

Die aus dem Stand der Technik bekannten Lösungen sehen jeweils eine relativ kleine, scheibenförmige Druckplatte vor, welche, von der Außenseite der fertigen Isolierung betrachtet, konvex ausgebildet und mit Versteifungen oder Verstrebungen versehen ist, um die Festigkeit zu steigern. Diese Versteifungen oder Verstrebungen führen zu einer erheblichen Vergrößerung der Dicke der Druckplatte, welche jedoch nur ein bestimmtes Maß erreichen kann, welches wiederum durch die Dicke der auf die Außenseite des Isolierelements aufgebrachten Putzschicht bestimmt wird, um zu verhindern, daß das Befestigungselement durch die Putzschicht hindurchragt oder die Putzschicht im Bereich des Befestigungselements keine ausreichende Dicke aufweist. Da vielfach nach dem Befestigen der Isolierelemente mittels der Befestigungselemente eine Glasfasermatte oder ähnliches zur besseren Verankerung des Verputzes und zu dessen Versteifung aufgebracht wird, erhöhen sich die beschriebenen Nachteile noch, da auch die Glasfasermatte im Bereich der vorstehenden Befestigungselemente ausgewölbt wird und zu einer weiteren Verdickung führt.The solutions known from the prior art each provide a relatively small, disc-shaped pressure plate which, viewed from the outside of the finished insulation, is convex and provided with stiffeners or struts in order to increase the strength. These stiffeners or struts lead to a considerable increase in the thickness of the pressure plate, which, however, can only reach a certain size, which in turn is determined by the thickness of the plaster layer applied to the outside of the insulating element, in order to prevent the fastening element from protruding through the plaster layer or the plaster layer in the area of the fastening element is not sufficiently thick. Since a glass fiber mat or the like is often applied after the insulation elements have been fastened by means of the fastening elements to better anchor the plaster and to stiffen it, the disadvantages described increase even further, since the glass fiber mat is also bulged in the area of the above fastening elements and leads to a further thickening .

Ein weiterer Nachteil der bekannten Befestigungselemente ergibt sich im Hinblick auf die Art und Ausgestaltung der Isolierelemente. Während früher hauptsächlich Isolierelemente verwendet wurden, bei welchen die einzelnen Fasern (Glaswolle, Steinwolle o. ä.) parallel zu der Plattenebene ausgerichtet waren, haben sich in letzter Zeit Isolierelemente durchgesetzt, bei welchen die einzelnen Fasern senkrecht zu der Isolierplatte oder Isoliermatte stehen.Another disadvantage of the known fastening elements arises with regard to the type and configuration of the insulating elements. While in the past mainly insulating elements were used, in which the individual fibers (glass wool, rock wool or the like) were aligned parallel to the plane of the plate, in recent times insulating elements, in which the individual fibers are vertical, have become established stand next to the insulating plate or mat.

Hierdurch verringert sich die Festigkeit des Isolierelementes erheblich, so daß eine weitaus größere Zahl an Befestigungselementen herkömmlicher Bauart benötigt werden. Dies wiederum führt zu einer erheblichen Steigerung des Montageaufwands und bringt weiterhin den Nachteil mit sich, daß, bedingt durch die Vielzahl der Dübel und Bohrlöcher, die Gefahr eines Eindringens von Feuchtigkeit in das Mauerwerk vergrößert wird. Will man die Zahl der Dübel verringern, muß man diese auf dem Armierungsgewebe anbringen, was andererseits den Nachteil mit sich bringt, daß die Putzstärke wegen der erforderlichen Überdeckung auch der Dübel insgesamt vergrößert werden muß.As a result, the strength of the insulating element is considerably reduced, so that a much larger number of fastening elements of conventional design are required. This in turn leads to a considerable increase in assembly costs and also has the disadvantage that, due to the large number of dowels and drill holes, the risk of moisture penetrating into the masonry is increased. If you want to reduce the number of dowels, you have to attach them to the reinforcing mesh, which on the other hand has the disadvantage that the plaster thickness must be increased overall because of the required coverage of the dowels.

Der Erfindung liegt die Aufgabe zugrunde, ein Befestigungselement der eingangs beschriebenen Art zu schaffen, welches eine hohe Festigkeit aufweist, einfach zu montieren ist und bei minimaler Anzahl von Befestigungselementen pro m2 eine sichere Halterung von Isolierelementen gewährleistet, auch bei geringer Dicke des Verputzes anwendbar und auch unterhalb des Armierungsgewebes montierbar ist.The invention has for its object to provide a fastener of the type described, which has a high strength, is easy to assemble and ensures a secure mounting of insulating elements with a minimum number of fasteners per m2, applicable even with a small thickness of the plaster and also is mountable below the reinforcement mesh.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß die Druckplatte als im wesentlichen ebene, flache Platte mit geringer, im wesentlichen konstanter Dicke ausgebildet ist und aus einem hochfesten Kunststoff gefertigt ist.According to the invention the object is achieved in that the pressure plate is designed as an essentially flat, flat plate with a small, substantially constant thickness and is made of a high-strength plastic.

Das erfindungsgemäße Befestigungselement zeichnet sich durch eine Reihe erheblicher Vorteile aus. Durch die flache, plattenartige Ausgestaltung steht das Befestigungselement nur in sehr geringem Maße über die Oberfläche des Isolierelements vor, so daß sich hinsichtlich der Aufbringung des Verputzes keinerlei Probleme ergeben. Es sind darüberhinaus nur wenige Dübel erforderlich, da die Druckplatte wegen ihrer großen Festigkeit großflächig ausgebildet werden kann. Insbesondere ist es erfindungsgemäß möglich, die Befestigungselemente und/oder das Isolierelement mit einer Glasfasermatte abzudecken (Armierungsgewebe), welche zur Verankerung des Verputzes dient. Durch die große Fläche der Druckplatte wird eine sichere Verankerung auch bei Isolierelementen gewährleistet, welche aus senkrecht zur Ebene des Isolierelements angeordneten Fasern bestehen.The fastening element according to the invention is characterized by a number of considerable advantages. Due to the flat, plate-like configuration, the fastening element protrudes only very slightly above the surface of the insulating element, so that there are no problems with regard to the application of the plaster. In addition, only a few dowels are required because the pressure plate can be formed over a large area because of their great strength. In particular, it is possible according to the invention to cover the fastening elements and / or the insulating element with a glass fiber mat (reinforcing fabric), which serves to anchor the plaster. The large area of the pressure plate ensures secure anchoring even with insulating elements which consist of fibers arranged perpendicular to the plane of the insulating element.

Durch die erfindungsgemäß vorgesehene Fertigung der Druckplatte aus einem hochfesten Werkstoff kann auf die aus dem Stand der Technik bekannten Versteifungsrippen verzichtet werden, so daß erstmals eine sehr flache Druckplatte geschaffen wurde, welche nur im geringsten Maße über die Ebene des Isolierelements vorsteht. Der Fachmann hatte es, wie der Stand der Technik zeigt, stets als erforderlich angesehen, die Druckplatte konvex auszubilden und mit Versteifungen oder verdickten Teilen zu versehen. Erfindungsgemäß wird nunmehr ein gänzlich anderer Weg beschritten, es wird nämlich eine hochfeste Druckplatte größeren Durchmessers verwendet.The inventive manufacture of the pressure plate from a high-strength material means that the stiffening ribs known from the prior art can be dispensed with, so that for the first time a very flat pressure plate was created which only protrudes to the smallest extent beyond the level of the insulating element. As the prior art shows, the person skilled in the art had always considered it necessary to make the pressure plate convex and to provide it with stiffeners or thickened parts. According to the invention, a completely different path is now followed, namely a high-strength printing plate of larger diameter is used.

Bei einer besonders vorteilhaften Weiterbildung der Erfindung ist vorgesehen, daß die Druckplatte mit einer Vielzahl von Ausnehmungen versehen ist. Diese Ausnehmungen dienen als Durchdringungsöffnungen zur Verankerung der aufzutragenden Putzschicht, so daß auch bei einer größeren Fläche der Druckplatte eine sichere Verankerung des Verputzes gewährleistet ist. Die Querschnitte der Öffnungen sind so ausgebildet, daß eine Verzahnung, d. h. eine formschlüssige Verbindung mit dem Putz, erhalten wird.In a particularly advantageous development of the invention, it is provided that the pressure plate is provided with a large number of recesses. These recesses serve as penetration openings for anchoring the plaster layer to be applied, so that a secure anchoring of the plaster is ensured even with a larger area of the pressure plate. The cross sections of the openings are designed so that a toothing, i. H. a positive connection with the plaster is obtained.

Um die Festigkeit der Druckplatte weiter zu erhöhen und um eine ausreichende Anzahl an Ausnehmungen zur Verankerung des Verputzes vorzusehen, ist es besonders günstig, wenn die Ausnehmungen gleichmäßig über die gesamte Fläche der Druckplatte verteilt angeordnet sind und die Druckplatte somit gitterartig ausgestaltet ist. Die einzelnen Rippen dieser gitterartigen Ausgestaltung der Druckplatte gewährleisten ein hohes Maß an Festigkeit und Biegesteifigkeit. Es können somit durch die Druckplatte auch sehr hohe Windsogkräfte aufgenommen werden.In order to further increase the strength of the pressure plate and to provide a sufficient number of recesses for anchoring the plaster, it is particularly advantageous if the recesses are arranged uniformly distributed over the entire surface of the printing plate and the printing plate is thus designed in a grid-like manner. The individual ribs of this grid-like design of the pressure plate ensure a high degree of strength and bending stiffness. Very high wind suction forces can thus also be absorbed by the pressure plate.

Die Druckplatte ist bevorzugterweise aus einem hochwertigen Kunststoff gefertigt. Dieser kann in günstiger Weise einen Glasfaseranteil von mehr als 30 %, bevorzugterweise mehr als 50 % aufweisen. Als Kunststoff zur Fertigung der Druckplatte bietet sich Polyamid an, es sind jedoch auch andere Kunststoffe mit entsprechenden Eigenschaften verwendbar. Besonders vorteilhaft ist es, wenn der Kunststoff selbstverlöschend ist, so daß sich hinsichtlich der Brandschutzbestimmungen keine Nachteile ergeben.The pressure plate is preferably made of a high quality plastic. This can advantageously have a glass fiber content of more than 30%, preferably more than 50%. Polyamide is a suitable plastic for manufacturing the printing plate, but other plastics with corresponding properties can also be used. It is particularly advantageous if the plastic is self-extinguishing, so that there are no disadvantages with regard to fire protection regulations.

Zur Verbindung der Druckplatte mit dem Dübel ist diese bevorzugterweise mit einem zentrischen, rohrartigen Ansatz versehen, durch welchen das Spreizelement in den Dübel eingebracht werden kann. In Abhängigkeit von dem Anwendungsgebiet kann es günstig sein, wenn die Druckplatte einstückig mit dem Dübel ausgebildet ist. Es kann hierdurch insbesondere das Eindringen von Feuchtigkeit in das Mauerwerk vermieden werden.To connect the pressure plate to the dowel, it is preferably provided with a central, tubular extension through which the expansion element can be inserted into the dowel. Depending on the field of application, it may be advantageous if the pressure plate is formed in one piece with the dowel. In this way, in particular the penetration of moisture into the masonry can be avoided.

Weiterhin kann es günstig sein, wenn der rohrartige Ansatz zur Abdeckung eines Kopfes des Spreizelements mittels eines Deckels verschließbar ist. Hierdurch wird zum einen das Spreizelement vor Korrosion geschützt, zum anderen wird eine Feuchtigkeitseinwirkung auf das Mauerwerk unterdrückt. Der Deckel kann einstückig mit der Druckplatte ausgebildet sein, wobei er über den Verbindungsbereich scharnierartig mit der Druckplatte oder dem rohrförmigen Ansatz verbunden ist.Furthermore, it can be advantageous if the tubular extension for covering a head of the expansion element can be closed by means of a cover. On the one hand, this protects the expansion element from corrosion, and on the other hand, the effect of moisture on the masonry is suppressed. The cover can be formed in one piece with the pressure plate, wherein it is connected in a hinge-like manner to the pressure plate or the tubular extension via the connection area is.

Die Bohrung im rohrförmigen Ansatz ist vorteilhaft größer als der Außendurchmesser des Dübels, wodurch zwar einerseits axiale Kräfte über den Dübel auf die Druckplatte übertragen werden können, andererseits jedoch ein gewisses radiales Spiel zwischen dem Dübelschaft und dem Dübelteller erhalten wird. Dieses Spiel ist dann vorteilhaft, um Dübelkraftverschwenkungen zu vermeiden, die aus Systemverformungen herrühren können. Vorteilhaft sind in der Bohrung des rohrförmigen Ansatzes mindestens drei Zentrierrippen angeordnet, die den Dübelschaft im unbelasteten Zustand zentrieren, so daß die Handhabung des Dübels vereinfacht wird. Diese Zentrierrippen bestehen entweder aus einem weichen oder einem harten Material, so daß diese entweder selbst verformt werden oder aber in das Material des Dübelschaftes eindringen, so daß eine Relativbewegung des Dübels in radialer Richtung relativ zur Druckplatte möglich ist.The bore in the tubular extension is advantageously larger than the outer diameter of the dowel, whereby on the one hand axial forces can be transmitted to the pressure plate via the dowel, but on the other hand a certain radial play is obtained between the dowel shaft and the dowel plate. This game is then advantageous to avoid dowel force swings that can result from system deformations. At least three centering ribs are advantageously arranged in the bore of the tubular extension, which center the anchor shaft in the unloaded state, so that the handling of the anchor is simplified. These centering ribs consist either of a soft or a hard material, so that they are either deformed themselves or penetrate into the material of the dowel shaft, so that a relative movement of the dowel in the radial direction is possible relative to the pressure plate.

Das erfindungsgemäße Befestigungselement ist somit sehr einfach aufgebaut und kann kostengünstig unter Verwendung einfachster Vorrichtungen hergestellt werden. Weiterhin ist die Montage des Befestigungselements sehr vereinfacht, da dieses mit einer großen Fläche gegen das Isolierelement anliegt. Es werden somit, verglichen mit dem Stand der Technik, nur eine sehr geringe Anzahl an Befestigungselementen pro m2 benötigt, um das gleiche Maß an Festigkeit zu erzielen.The fastening element according to the invention is thus of a very simple construction and can be produced inexpensively using the simplest devices. Furthermore, the assembly of the fastening element is very simplified, since it lies against the insulating element with a large area. Thus, compared to the prior art, only a very small number of fastening elements per m2 are required to achieve the same level of strength.

Als Spreizelement können Nägel, Schrauben oder Stifte verwendet werden, welche wahlweise mit einer Umhüllung versehen sein können, um eine dichtende Anlage zumindest im äußeren Bereich des Dübels und der Druckplatte zu gewährleisten.Nails, screws or pins can be used as expansion elements, which can optionally be provided with a covering in order to ensure a sealing contact at least in the outer region of the dowel and the pressure plate.

Im folgenden wird die Erfindung anhand von Ausführungsbeispielen in Verbindung mit der Zeichnung beschrieben. Dabei zeigt:

Fig. 1
eine schematische Schnittansicht eines ersten Ausführungsbeispiels des erfindungsgemäßen Befestigungselements im vormontierten Zustand,
Fig. 2
eine Ansicht, ähnlich Fig. 1, im fertigmontierten Zustand,
Fig. 3
eine Draufsicht auf das in den Fig. 1 und 2 gezeigte Ausführungsbeispiel des Befestigungselements,
Fig. 4
eine vormontierte Ansicht, ähnlich Fig. 1, eines weiteren mit einem Deckel versehenen Ausführungsbeispiels des Befestigungselements,
Fig. 5
eine Darstellung des in Fig. 4 gezeigten Ausführungsbeispiels im fertigmontierten Zustand,
Fig. 6
eine Draufsicht auf das in Fig. 4 gezeigte Befestigungselement und
Fig. 7
einen Schnitt nach Linie VII-VII in Fig. 6.
The invention is described below using exemplary embodiments in conjunction with the drawing. It shows:
Fig. 1
2 shows a schematic sectional view of a first exemplary embodiment of the fastening element according to the invention in the preassembled state,
Fig. 2
1, in the fully assembled state,
Fig. 3
2 shows a plan view of the exemplary embodiment of the fastening element shown in FIGS. 1 and 2,
Fig. 4
1 shows a preassembled view, similar to FIG. 1, of a further embodiment of the fastening element provided with a cover,
Fig. 5
4 shows the embodiment shown in FIG. 4 in the fully assembled state,
Fig. 6
a plan view of the fastener shown in Fig. 4 and
Fig. 7
a section along line VII-VII in Fig. 6.

In den Fig. 1 - 3 ist ein erstes Ausführungsbeispiel des erfindungsgemäßen Befestigungselements dargestellt. Dieses umfaßt eine Druckplatte 2, welche als kreisscheibenförmige, ebene Platte ausgebildet ist. Im zentrischen Bereich ist die Druckplatte 2 mit einer Ausnehmung 9 versehen, durch welche ein Spreizelement 4, welches mit einem Kopf 7 versehen ist, durchführbar ist. Der zentrische Bereich der Druckplatte 2 ist einstückig mit einem rohrförmigen Ansatz 6 verbunden, welcher in einen Dübel 3 übergeht. Es ist auch möglich, den Dübel 3 getrennt von der Druckplatte herzustellen. Druckplatte und Dübel sind dann miteinander verrastet. Der Dübel ist als üblicher Spreizdübel ausgebildet, das Spreizelement 4 kann in Form einer Schraube ausgestaltet sein. Die Fig. 1 zeigt einen vormontierten Zustand, in welchem der Dübel 3 noch nicht gespreizt ist. Das Befestigungselement kann somit durch ein Isolierelement 1 (Isoliermatte oder Isolierplatte) durchgesteckt und in ein Bohrloch 10 eingeschoben werden, welches in ein Mauerwerk 11 eingebracht wurde, um das Isolierelement 1 zu verankert.1-3, a first embodiment of the fastener according to the invention is shown. This comprises a pressure plate 2, which is designed as a circular disk-shaped, flat plate. In the central area, the pressure plate 2 is provided with a recess 9, through which a spreading element 4, which is provided with a head 7, can be passed. The central area of the pressure plate 2 is connected in one piece to a tubular extension 6 which merges into a dowel 3. It is also possible to manufacture the dowel 3 separately from the pressure plate. The pressure plate and dowels are then locked together. The dowel is designed as a conventional expansion dowel, the expansion element 4 can be designed in the form of a screw. 1 shows a preassembled state in which the dowel 3 has not yet been spread. The fastening element can thus be pushed through an insulating element 1 (insulating mat or insulating plate) and inserted into a borehole 10 which has been introduced into a masonry 11 in order to anchor the insulating element 1.

Die Fig. 2 zeigt einen vollständig montierten Zustand, bei welchem der Dübel 3 gespreizt ist, so daß das Befestigungselement in dem Mauerwerk 11 verankert ist. Der Kopf 7 des Spreizelements 4 ist vollständig in die Ausnehmungen 9 eingebracht, so daß sich eine im wesentlichen ebene Außenfläche ergibt.Fig. 2 shows a fully assembled state in which the dowel 3 is spread so that the fastening element is anchored in the masonry 11. The head 7 of the expansion element 4 is completely inserted into the recesses 9, so that there is a substantially flat outer surface.

Die Fig. 3 zeigt eine Draufsicht auf die erfindungsgemäße Druckplatte 2. Dabei ist insbesondere zu erkennen, daß die Druckplatte 2 gitterartig ausgestaltet ist und eine Vielzahl von gleichmäßig angeordneten Ausnehmungen 5 aufweist, welche zur Verankerung eines nicht dargestellten, nachträglich auf das Isolierelement 1 aufzubringenden Verputzes dient.Fig. 3 shows a plan view of the pressure plate 2 according to the invention. In particular, it can be seen that the pressure plate 2 is designed like a grid and has a plurality of uniformly arranged recesses 5, which for anchoring a plaster, not shown, to be subsequently applied to the insulating element 1 serves.

Die Fig. 4 - 6 zeigen ein abgewandeltes Ausführungsbeispiel, welches sich lediglich durch einen Deckel 8 von dem Ausführungsbeispiel der Fig. 1 - 3 unterscheidet. Gleiche Teile wurden mit gleichen Bezugsziffern versehen, so daß auf eine wiederholte Beschreibung verzichtet werden kann. Der Deckel 8 ist im Bereich der Ausnehmung 9 einstückig mit der Druckplatte 2 ausgebildet und kann, wie in Fig. 5 gezeigt, nach Beendigung des Montagevorganges verschwenkt werden, um die Ausnehmung 9 vollständig zu verschließen. Hierdurch wird ein Eindringen von Feuchtigkeit in den Dübelhohlraum verhindert, gleichzeitig wird der Kopf 7 des Spreizelements 4 zur Umgebung hin abgedeckt. Vorteilhaft wird der Dübel 3 und/oder der Deckel der Druckplatte 2 aus einem elastischen Thermoplast im Spritzverfahren hergestellt. Der Deckel bildet gleichzeitig eine zusätzliche Isolation und schließt eine Wärmebrücke aus.4-6 show a modified embodiment which differs from the embodiment of FIGS. 1-3 only by a cover 8. The same parts have been given the same reference numbers, so that a repeated description can be omitted. The cover 8 is formed in one piece with the pressure plate 2 in the region of the recess 9 and, as shown in FIG. 5, can be pivoted after completion of the assembly process in order to completely close the recess 9. This prevents moisture from entering the dowel cavity prevented, at the same time the head 7 of the expansion element 4 is covered towards the environment. The dowel 3 and / or the cover of the pressure plate 2 is advantageously produced from an elastic thermoplastic in the injection molding process. The cover also forms additional insulation and excludes a thermal bridge.

Die Erfindung ist nicht auf die gezeigten Ausführungsbeispiele beschränkt, vielmehr ergeben sich für den Fachmann im Rahmen der Erfindung vielfältige Abwandlungs- und Modifikationsmöglichkeiten.The invention is not limited to the exemplary embodiments shown, rather there are various modification and modification possibilities for the person skilled in the art within the scope of the invention.

Fig. 7 zeigt einen Querschnitt durch die Druckplatte, wobei der Querschnitt jeder Öffnung an der Oberfläche größer als auf der Unterseite ist. Hierdurch erreicht man beim Aufbringen des Putzes eine formschlüssige Verbindung zwischen Putz und Dübel.7 shows a cross section through the pressure plate, the cross section of each opening being larger on the surface than on the underside. This results in a positive connection between plaster and dowel when applying the plaster.

Claims (11)

Befestigungselement zur Befestigung von Isolierelementen (1), mit einer Druckplatte (2), einem Dübel (3) und einem durch die Druckplatte (2) in den Dübel (3) einbringbaren Spreizelement (4), dadurch gekennzeichnet, daß die Druckplatte (2) als im wesentlichen ebene, flache Platte mit geringer, im wesentlichen konstanter Dicke ausgebildet ist und aus einem hochfesten Kunststoff gefertigt ist.Fastening element for fastening insulating elements (1), with a pressure plate (2), a dowel (3) and an expansion element (4) which can be inserted into the dowel (3) through the pressure plate (2), characterized in that the pressure plate (2) is designed as a substantially flat, flat plate with a small, substantially constant thickness and is made of a high-strength plastic. Befestigungselement nach Anspruch 1, dadurch gekennzeichnet, daß die Druckplatte (2) mit einer Vielzahl von Ausnehmungen (5) versehen ist, deren Öffnungsweite an der Oberseite geringer als an der Unterseite ist.Fastening element according to claim 1, characterized in that the pressure plate (2) is provided with a plurality of recesses (5), the opening width of which is smaller at the top than at the bottom. Befestigungselement nach Anspruch 2, dadurch gekennzeichnet, daß die Ausnehmungen (5) gleichmäßig verteilt über die gesamte Fläche der gitterartig ausgestalteten Druckplatte (2) angeordnet sind.Fastening element according to claim 2, characterized in that the recesses (5) are arranged evenly distributed over the entire surface of the grid-like pressure plate (2). Befestigungselement nach Anspruch 3, dadurch gekennzeichnet, daß der Kunststoff einen Glasfaseranteil von mehr als 30 %, bevorzugterweise mehr als 50 % aufweist.Fastening element according to claim 3, characterized in that the plastic has a glass fiber content of more than 30%, preferably more than 50%. Befestigungselement nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, daß die Druckplatte (2) aus Polyamid gefertigt ist.Fastening element according to one of claims 3 or 4, characterized in that the pressure plate (2) is made of polyamide. Befestigungselement nach einem der Ansprüche 1 - 5, dadurch gekennzeichnet, daß die Druckplatte (2) einen zentrischen, rohrartigen Ansatz (6) aufweist, an den sich der Dübel (3) anschließt.Fastening element according to one of claims 1-5, characterized in that the pressure plate (2) has a central, tubular extension (6) to which the dowel (3) is connected. Befestigungselement nach Anspruch 6, dadurch gekennzeichnet, daß die Bohrung (12) im rohrförmigen Ansatz (6) größer ist als der Außendurchmesser des Dübels (3).Fastening element according to claim 6, characterized in that the bore (12) in the tubular extension (6) is larger than the outer diameter of the dowel (3). Befestigungselement nach Anspruch 7, dadurch gekennzeichnet, daß in der Bohrung (12) im rohrförmigen Ansatz (6) mindestens drei Zentrierrippen für den Dübelschaft angeordnet sind, die den Dübel in unbelastetem Zusand relativ zur Druckplatte (2) zentrieren.Fastening element according to claim 7, characterized in that at least three centering ribs for the dowel shaft are arranged in the bore (12) in the tubular extension (6), which center the dowel in unloaded condition relative to the pressure plate (2). Befestigungselement nach einem der Ansprüche 1 - 8, dadurch gekennzeichnet, daß die Druckplatte (2) einstückig mit dem Dübel (3) ausgebildet ist.Fastening element according to one of claims 1-8, characterized in that the pressure plate (2) is formed in one piece with the dowel (3). Befestigungselement nach Anspruch 6 bis 9, dadurch gekennzeichnet, daß der rohrartige Ansatz (6) zur Abdeckung des Kopfes (7) des Spreizelements (4) mittels eines Deckels (8) verschließbar ist.Fastening element according to claims 6 to 9, characterized in that the tubular extension (6) for covering the head (7) of the expansion element (4) can be closed by means of a cover (8). Befestigungselement nach Anspruch 10, dadurch gekennzeichnet, daß der Deckel (8) einstückig mit der Druckplatte (2) ausgebildet ist.Fastening element according to claim 10, characterized in that the cover (8) is formed in one piece with the pressure plate (2).
EP92109049A 1991-08-15 1992-05-29 Fixing element to fix insulating elements Expired - Lifetime EP0528119B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9110068U 1991-08-15
DE9110068U DE9110068U1 (en) 1991-08-15 1991-08-15 Fastening element for fastening insulating elements

Publications (2)

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EP0528119A1 true EP0528119A1 (en) 1993-02-24
EP0528119B1 EP0528119B1 (en) 1995-09-27

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EP (1) EP0528119B1 (en)
AT (1) ATE128508T1 (en)
DE (2) DE9110068U1 (en)
DK (1) DK0528119T3 (en)

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EP0723053A1 (en) 1995-01-18 1996-07-24 EJOT Kunststofftechnik GmbH &amp; Co. KG Fastening element
CN100453751C (en) * 2006-04-16 2009-01-21 泓泰复合材料(江阴)有限公司 Side hidden anchoring parts for composite heat-preservation board and installation method thereof

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DE9411956U1 (en) * 1994-07-23 1994-09-22 Harald Zahn GmbH, 69168 Wiesloch Non-slip fastening element for insulation and sealing material on flat roofs
DE19536171A1 (en) * 1995-09-28 1997-04-03 Ejot Kunststofftech Gmbh Fastening element for fastening heat-insulating materials
DE19701122A1 (en) * 1996-11-21 1998-05-28 Peter Kellner Fixture component for facade, e.g. heat insulation system
DE202005002534U1 (en) † 2005-02-17 2006-06-29 Fischerwerke Artur Fischer Gmbh & Co. Kg insulation holders
FR2944303B1 (en) * 2009-04-08 2016-02-12 Lr Etanco Atel DEVICE FOR FIXING A PANEL OF A COATING, IN PARTICULAR A ROOF OR FACADE
DE202012011890U1 (en) * 2012-12-12 2014-03-13 Illinois Tool Works Inc. Dowel device for fixing insulating material

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CH645437A5 (en) * 1979-02-01 1984-09-28 Faester Befestigungstechnik Ag Dowel
DE3045986A1 (en) * 1980-12-05 1982-06-09 Adolf Böhl Schrauben- und Kunststoffwerk GmbH & Co, 5920 Bad Berleburg Heat insulating external wall panel fixing element - has covering plate engaging tie bolt or pressure plate on support structure and closing panel cavity
EP0074469B1 (en) * 1981-09-16 1986-03-05 EJOT Adolf Böhl GmbH &amp; Co. KG Device for fastening heat-insulating and sound-absorbing materials
CH657652A5 (en) * 1982-09-23 1986-09-15 Wolfgang Schugk Retainer for fastening insulating fibre mats - consists of plate with barbed plug inserted into mat
CH671616A5 (en) * 1987-03-02 1989-09-15 Aerosmith Ag Wall fixture for unit such as insulating panel - consists of pin made of steel with plastics covered mushroom anchor
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
EP0723053A1 (en) 1995-01-18 1996-07-24 EJOT Kunststofftechnik GmbH &amp; Co. KG Fastening element
CN100453751C (en) * 2006-04-16 2009-01-21 泓泰复合材料(江阴)有限公司 Side hidden anchoring parts for composite heat-preservation board and installation method thereof

Also Published As

Publication number Publication date
DE9110068U1 (en) 1991-10-31
DK0528119T3 (en) 1996-02-05
ATE128508T1 (en) 1995-10-15
DE59203816D1 (en) 1995-11-02
EP0528119B1 (en) 1995-09-27

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