EP0122256B1 - Anchoring element for securing particularly floor coverings to a substrate - Google Patents

Anchoring element for securing particularly floor coverings to a substrate Download PDF

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Publication number
EP0122256B1
EP0122256B1 EP19820903177 EP82903177A EP0122256B1 EP 0122256 B1 EP0122256 B1 EP 0122256B1 EP 19820903177 EP19820903177 EP 19820903177 EP 82903177 A EP82903177 A EP 82903177A EP 0122256 B1 EP0122256 B1 EP 0122256B1
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EP
European Patent Office
Prior art keywords
substrate
anchoring element
main body
element according
plane
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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.)
Expired
Application number
EP19820903177
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German (de)
French (fr)
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EP0122256A1 (en
EP0122256A4 (en
Inventor
Ernó TOTH
Nandor Horniak
Péter SERES
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Novex Talalmanyfejleszto Es Ertekesito Kuelkereskedelmi Rt
Novex Talalmanyfejleszto Es Ertekesito Kulkereskedelmi Rt
Original Assignee
Novex Talalmanyfejleszto Es Ertekesito Kuelkereskedelmi Rt
Novex Talalmanyfejleszto Es Ertekesito Kulkereskedelmi Rt
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Publication of EP0122256A1 publication Critical patent/EP0122256A1/en
Publication of EP0122256A4 publication Critical patent/EP0122256A4/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
    • 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
    • E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
    • E04F13/04—Bases for plaster
    • 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
    • E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
    • E04F13/04—Bases for plaster
    • E04F13/045—Means for fastening plaster-bases to a supporting structure

Definitions

  • the invention relates to an anchoring element for fastening covering layers according to the upper handle of claim 1.
  • a method for some time, according to which a load-bearing base is first built, preferably of a concrete material of sufficient thickness and thickness, and then a floor covering of substantially less layer thickness is applied.
  • a load-bearing base is first built, preferably of a concrete material of sufficient thickness and thickness, and then a floor covering of substantially less layer thickness is applied.
  • the above-mentioned process has proven to be extremely advantageous, since it means the high work and time required to break up and dig out the old substrate and to incorporate the new concrete body , could be saved.
  • the key problem with the applicability of the above method was primarily to find a suitable material for the relatively thin floor covering, which is sufficiently resistant to wear, impact stress, vibration and thermal stress.
  • Steel fiber-reinforced synthetic resin mortars are known to have proven particularly useful for the stated purpose, since they can be prepared, applied and incorporated quickly and easily and, moreover, are sufficiently resistant and wear-resistant even when applied in a thin layer.
  • a particularly suitable steel fiber reinforced synthetic resin mortar composition is described in detail in HU-A-174 992.
  • anchoring elements of different determination such as those used, for example, as rod-shaped supporting elements for a plaster base from DE-A-30 29 062 or as fastening elements, contain anchors which can be anchored in masonry by means of a screw, nail or the like DE-A-30 51 697 are known, are unsuitable for the stated purpose.
  • FR-A-2 352 130 an anchoring element for fastening wall cladding elements to unplastered or vertical walls that are left unplastered or generally left in the raw state or can be left, while maintaining a gap, with an anchor with an internal thread that can be anchored in a hole in the subsurface, and an inside Dowel anchored by a spreading effect to the base of the screw shaft, which is formed with a recess that is open on one side upwards, with its centrally pierced bottom part, lying on the base and provided with at least one radially outwardly projecting extension on the outer circumference, through its central hole protrudes in the bottom part of the screw shaft.
  • the known anchoring element is fastened directly and immovably to the substrate by means of the screw shaft, so that it cannot execute any movements parallel to the surface of the substrate.
  • the object of the present invention is therefore to provide an anchoring element which enables a local attachment of relatively thin-layered, preferably made of synthetic resin mortar or filled with the latter, plastic floor coverings on a substrate, in particular made of concrete, such that in the applied covering by a local attachment that meets all requirements Stress peaks caused by thermal expansion do not occur, although the covering is anchored in the subsurface at the required intervals in a manner that prevents bulging.
  • an anchoring element based on the last-mentioned embodiment, is characterized according to the invention in that the base body is arranged coaxially around the screw shaft and is braced against the substrate by means of a preferably flat, disk-shaped clamping nut screwed onto the screw shaft, such that the outer edge the clamping nut is spaced on all sides in the radial direction from the inner wall of the recess of the base body, and that the base body or the recess is closed off by a disk-shaped cover in order to achieve a surface which is flat with the covering layers to be anchored.
  • a particularly inexpensive easy assembly and fastening option of the Anchoring element according to the invention results from the fact that initially a screw with a threaded shaft extending to the screw head is used and the threaded shaft is cut and / or ground in an already aligned state of the anchoring element in a plane aligned with the end face plane of the clamping nut facing away from the ground, and that The depth of the one-sided recess in the base body is greater than the height of the clamping nut.
  • Sufficiently flat anchoring elements for, in particular, thin-layer floor coverings can be designed in a constructive and also assembly-technically advantageous manner if the clamping nut is provided with at least two openings, diametrically opposite one another on a circumference of a part circle, for receiving appropriately shaped claws of a clamping tool.
  • the anchoring element according to the invention have proven to be favorable, in which the radially outwardly projecting extension is formed as a disk-shaped ring flange on the outer circumference of the base body, which is formed both at a distance from the underground level and from the outer cover level and, if appropriate, also with Breakthroughs and / or is provided with radial slots.
  • the cover is designed with a preferably turned peripheral edge facing the base body and is fitted with a tight fit onto the correspondingly turned outer circumference of the base body.
  • the anchoring element according to the invention is primarily suitable for the local fastening of floor coverings to preferably prepared, at least cleaned substrates, by embedding the clamped base body provided with a cover in a floor covering, preferably made of steel fiber reinforced synthetic resin mortar, which is applied to the surface and is at least flush with the outer cover plane becomes.
  • a flat disk-shaped clamping nut 33 is then loosely screwed onto the threaded shaft 321 of the screw 32 up to the head. Thereafter, the screw 32 is screwed into the internal thread of the dowel 30, and the screw 32 is tightened as tightly as possible, as a result of which it is firmly anchored in the base 1 in a manner known per se by the spreading action via the dowel 30. Following this, the base body 31 is clamped to the surface 1 with the aid of the clamping nut 33 against the surface of the base 1 (with the soft-elastic washer 35 clamped in between).
  • a target tool provided with claws (not shown) is expediently used, the claws of which can engage in bores 331 of the clamping nut 33 which are diametrically opposed to one another.
  • the threaded shaft 321 of the screw 32 is expediently cut off in a plane which is directly aligned with the upper end plane of the clamping nut 33 and / or is preferably ground off with the aid of a corner grinding machine.
  • a cover 34 with a snug fit is formed on the upper edge of the base body 31, which is turned to fit along its outer circumferential surface, and has a peripheral edge 341 which is also turned to fit on its inner surface. This creates an anchoring element 3, which shows the following features and properties in the sense of the invention.
  • the base body 31 is connected to the base 1 without play, ie without a degree of freedom of movement. Furthermore, the base body 31 has a circumferential annular flange 313 which projects radially on its outer circumference and extends both from the surface of the substrate 1, as well as extending from the outer, according to the drawing upper cover level by a distance, and is preferably provided with openings or with radial slots in order to facilitate filling of the clear space below with the mortar mass of a floor covering 2.
  • the tightening nut 33 tightened around the cut-off threaded shaft 321 is seated in an indentation 312 of the base body 31, which was originally opened on one side (upwards in the drawing) and is now closed with the cover 34, with a sufficiently large surrounding space since, on the one hand, the diameter of the indentation 312 greater than that of the clamping nut 33, on the other hand the depth t of the recess 312 is greater than the clamping nut height h.
  • a floor covering 2 preferably made of steel fiber-reinforced synthetic resin mortar, which is embedded on the substrate 1 and embeds the anchoring element 3 or more of the same according to the invention, can only move freely in all directions in the floor plane, which in particular to compensate and absorb thermal expansion in order to avoid the occurrence of stress peaks in the covering, which could possibly lead to cracks and breaks, is an advantage, even often required.
  • the thickness of the floor covering 2 is to be selected at least so that the smoothed surface of the covering is at least flush with the upper surface of the cover.

Abstract

An anchoring element (3) for securing particularly floor coverings, preferably made of synthetic resin mortar reinforced with steel fibers, to a substrate (1) comprises a tapped sleeve (30) opening into the substrate, and a screw (32) or a bolt stem (321) into the sleeve. The anchoring element (3) has a cup-shaped body (31) formed by a hollow (312) comprising a central hole in its bottom on the substrate side (1). The body is provided on its contour with at least a radial outward extension. The body is arranged coaxially to a bolt stem (321) anchored in the sleeve (30), secured by expansion in a drilling in the substrate (1) and is maintained against the substrate (1) by means of a tensioning nut (33) screwed to the bolt stem (321). The machined hollow (312) of the body (31) is closed by a disk-shaped cover (34) forming a planar surface.

Description

Die Erfindung betrifft ein Verankerungselement zur Befestigung von Belagschichten gemäß dem Obergriff des Anspruchs 1.The invention relates to an anchoring element for fastening covering layers according to the upper handle of claim 1.

Zur Herstellung und zur Erneuerung von Fussböden von insbegondere Industriebetrieben ist bereits seit längerer Zeit ein Verfahren bekannt, wonach zunächst ein lasttragender Untergrund, vorzugsweise aus einem Betonmaterial von hinreichender Dicke und Stärke errichtet und hierauf ein Fussbodenbelag von wesentlich geringerer Schichtdicke aufgetragen wird. Insbesondere zur Ausbesserung von alten, gegebenenfalls auch oberflächenbeschädigten Fussböden von Industriehallen, hat sich das oben genannte Verfahren als äusserst vorteilhaft erwiesen, da dadurch der hohe Arbeits- und Zeitwand, der zum Aufbrechen und Ausheben des alten Untergrundes und zur Einarbeitung des neuen Betonkörpers früher erforderlich war, erspart werden konnte. Das Schlüsselproblem bei der Anwendbarkeit des oben genannten Verfahrens lag in erster Linie darin, ein geeignetes Material für den relativ dünnen Fussbodenbelag, welches hinreichend widerstandsfähig gegenüber Verschleiss, Schlagbeanspruchungen, Vibration und Wärmespannungen ist, zu finden.For the manufacture and renewal of floors by industrial companies in particular, a method has been known for some time, according to which a load-bearing base is first built, preferably of a concrete material of sufficient thickness and thickness, and then a floor covering of substantially less layer thickness is applied. In particular for the repair of old, possibly also surface-damaged floors in industrial halls, the above-mentioned process has proven to be extremely advantageous, since it means the high work and time required to break up and dig out the old substrate and to incorporate the new concrete body , could be saved. The key problem with the applicability of the above method was primarily to find a suitable material for the relatively thin floor covering, which is sufficiently resistant to wear, impact stress, vibration and thermal stress.

Insbesondere für den genannten Zweck haben sich bekannterweise stahlfaserverstärkte Kunstharzmörtel gut bewährt, da sie sich schnell und einfach zubereiten, auftragen und einarbeiten lassen und darüber hinaus auch in dünner Schicht aufgetragen hinreichend widerstandsfähig und verschleißfest sind. Eine besonders geeignete stahlfaserverstärkte Kunstharzmörtel-Zusammensetzung ist in der HU-A-174 992 ausführlich beschrieben.Steel fiber-reinforced synthetic resin mortars are known to have proven particularly useful for the stated purpose, since they can be prepared, applied and incorporated quickly and easily and, moreover, are sufficiently resistant and wear-resistant even when applied in a thin layer. A particularly suitable steel fiber reinforced synthetic resin mortar composition is described in detail in HU-A-174 992.

Bei derartigen und ähnlichen, gegebenenfalls aus reinem oder verfülltem Kunststoffmaterial erzeugten Fußbodenbelägen hat sich jedoch gezeigt, daß insbesondere bei größeren Oberflächen eine zumindest in bestimmten Abständen angeordnete Verankerung der Deckschicht, d.h. des Fußbodenbelages im Untergrund doch zweckmäßig, ja sogar erforderlich sein kann. Es hat sich darüber hinaus gezeigt, daß bekannte Verankerungselemente unterschiedlicher Bestimmung, wie sie beispielsweise als stabförmige Tragelemente für einen Putzträger aus der DE-A-30 29 062 oder als Befestigungselemente enthaltend einen in einem Mauerwerk mittels Schraube, Nagel oder dgl. verankerbaren Dübel aus der DE-A-30 51 697 bekannt sind, für den genannten Zweck ungeeignet sind.With such and similar floor coverings, which may have been made from pure or filled plastic material, it has been shown that, in particular with larger surfaces, an anchoring of the cover layer, at least at certain intervals, i.e. of the floor covering in the subsurface can be useful, even necessary. It has also been found that known anchoring elements of different determination, such as those used, for example, as rod-shaped supporting elements for a plaster base from DE-A-30 29 062 or as fastening elements, contain anchors which can be anchored in masonry by means of a screw, nail or the like DE-A-30 51 697 are known, are unsuitable for the stated purpose.

Es ist auch aus der FR-A-2 352 130 ein Verankerungselement zur Befestigung von Wandverkleidungselementen an unverputzten oder allgemein im Rohzustand belassenen bzw. belaßbaren senkrechten Wänden unter Einhaltung eines Zwischenraumes bekannt, mit einem in einer Bohrung im Untergrund verankerbaren Dübel mit Innengewinde und einem im Dübel durch Spreizwirkung mit dem Untergrund verankerten Schraubenschaft, einem mit einer einseitig nach oben geöffneten Ausnehmung ausgebildeten, mit seinem zentral durchbohrten Bodenteil, auf dem Untergrund aufliegenden, am Außenumfang mit mindestens einem radial nach außen abstehenden Fortsatz versehenen, etwa schalenförmigen Grundkörper, durch dessen zentrale Bohrung im Bodenteil der Schraubenschaft hindurchragt. Das bekannte Verankerungselement ist mittels des Schraubenschaftes direkt und unbeweglich am Untergrund befestigt, so daß es keine Bewegungen parallel zur Fläche des Untergrundes ausführen kann.It is also known from FR-A-2 352 130 an anchoring element for fastening wall cladding elements to unplastered or vertical walls that are left unplastered or generally left in the raw state or can be left, while maintaining a gap, with an anchor with an internal thread that can be anchored in a hole in the subsurface, and an inside Dowel anchored by a spreading effect to the base of the screw shaft, which is formed with a recess that is open on one side upwards, with its centrally pierced bottom part, lying on the base and provided with at least one radially outwardly projecting extension on the outer circumference, through its central hole protrudes in the bottom part of the screw shaft. The known anchoring element is fastened directly and immovably to the substrate by means of the screw shaft, so that it cannot execute any movements parallel to the surface of the substrate.

Aufgabe der vorliegenden Erfindung ist daher, ein Verankerungselement zu schaffen, welches eine allen Ansprüchen gerechte örtliche Befestigung von relativ dünnschichtigen, vorzugsweise aus Kunstharzmörtel bestehenden oder mit dem letzteren verfüllten Kunststoff-Fußbodenbelägen an einem insbesondere aus Beton bestehenden Untergrund derart ermöglicht, daß im aufgebrachten Belag durch Wärmedehnung hervorgerufene Spannungsspitzen nicht auftreten, wobei der Belag doch in den erforderlichen Abständen auf eine Aufwölbung verhindernde Weise im Untergrund verankert ist.The object of the present invention is therefore to provide an anchoring element which enables a local attachment of relatively thin-layered, preferably made of synthetic resin mortar or filled with the latter, plastic floor coverings on a substrate, in particular made of concrete, such that in the applied covering by a local attachment that meets all requirements Stress peaks caused by thermal expansion do not occur, although the covering is anchored in the subsurface at the required intervals in a manner that prevents bulging.

Zur Lösung ist ein Verankerungselement, ausgehend von der zuletzt genannten Ausführung, gemäß der Erfindung dadurch gekennzeichnet, daß der Grundkörper um den Schraubenschaft koaxial angeordnet ist und mittels einer auf dem Schraubenschaft aufgeschraubten, vorzugsweise flachen, scheibenförmigen Spannmutter gegen den Untergrund verspannt ist, daß die Außenkante der Spannmutter allseitig einen Abstand in radialer Richtung von der Innenwand der Ausnehmung des Grundkörpers aufweist, und daß der Grundkörper bzw. die Ausnehmung zur Erzielung einer mit den zu verankernden Belagsschichten ebenen Oberfläche durch einen scheibenförmigen Deckel abgeschlossen ist.To solve this, an anchoring element, based on the last-mentioned embodiment, is characterized according to the invention in that the base body is arranged coaxially around the screw shaft and is braced against the substrate by means of a preferably flat, disk-shaped clamping nut screwed onto the screw shaft, such that the outer edge the clamping nut is spaced on all sides in the radial direction from the inner wall of the recess of the base body, and that the base body or the recess is closed off by a disk-shaped cover in order to achieve a surface which is flat with the covering layers to be anchored.

Es wurde erkannt, daß die obigen Anforderungen durch Schaffung und durch Anwendung eines Verankerungselementes gleichzeitig erfüllt werden können, welches eine zumindest beschränkte Bewegung des aufgebrachten Fußbodenbelages gegenüber dem Untergrund bei Überschreitung gewisser insbesondere Wärmespannungen im Belag lediglich in der Fußbodenebene liegenden Richtungen zuläßt, Bewegungen des Belages in auf die Fußbodenebene senkrechter Richtung jedoch völlig verhindert.It was recognized that the above requirements can be met at the same time by creating and using an anchoring element which allows at least limited movement of the applied floor covering relative to the subsurface when certain, in particular, thermal stresses in the covering are only in the floor plane, movements of the covering in completely prevented in the direction perpendicular to the floor level.

Insbesondere kann es erfindungsgemäß bei leicht unebenen, gegebenenfalls zu erneuernden alten Untergründen von Vorteil sein, daß zwischen dem Bodenteil des Grundkörpers und dem Untergrund auch eine nachgiebige bis elastische Unterlegscheibe vorhanden ist. Eine insbesondere günstige leichte Montage- und Befestigungsmöglichkeit des erfindungsgemäßen Verankerungselementes ergibt sich dadurch, daß zunächst von einer Schraube mit einem bis zum Schraubenkopf reichenden Gewindeschaft ausgegangen und der Gewindeschaft im bereits verspannten festgezogenen Zustand des Verankerungselementes in einer mit der dem Untergrund abgewandten Stirnflächenebene der Spannmutter fluchtenden Ebene abgeschnitten und/oder abgeschliffen ist, und die Tiefe der einseitigen Eindrehung im Grundkörper größer als die Spannmutterhöhe bemessen ist. Hinreichend flache Verankerungselemente für insbesondere dünnschichtige Fußbodenbeläge lassen sich konstruktiv und auch montagetechnisch günstig ausgestalten, falls die Spannmutter mit auf einem Teilkreisumfang einander diametral gegenüberliegenden mindestens zwei Durchbrüchen zur Aufnahme von entsprechend geformten Krallen eines Spannwerkzeuges versehen ist. Aus herstellungstechnischen Gründen haben sich Ausführungsformen des erfindungsgemäßen Verankerungselementes für günstig erwiesen, bei welchem der radial nach außen abstehende Fortsatz als ein scheibenförmiger Ringflansch am Außenumfang des Grundkörpers angeformt ist, der sowohl von der Untergrundebene als auch von der äußeren Deckelebene mit Abstand ausgebildet und gegebenenfalls auch mit Durchbrüchen und/oder mit radialen Schlitzen versehen ist. Sowohl im Hinblick auf die Herstellung als auch aus Gründen einer leichten Montage ist es von Vorteil, falls der Deckel mit einem vorzugsweise angedrehten, nach dem Grundkörper hin gewandten umlaufenden Rand ausgebildet und auf den entsprechend auf Maß gedrehten Außenumfang des Grundkörpers mit engem Paßsitz aufgesetzt ist. Das erfindungsgemässe Verankerungselement ist in erster Linie zur örtlichen Befestigung von Fussbodenbelägen zu vorzugsweise vorbereiteten, zumindest gesäuberten Untergründen geeignet, indem der verspannt festgehaltene, mit Deckel versehene Grundkörper in einen aus vorzugsweise stahlfaserverstärktem Kunstharzmörtel auf den Untergrund aufgetragenen, mit der äusseren Deckalebene zumindest fluchtend geglätteten Fussbodenbelag eingebettet wird.In particular, it can be advantageous according to the invention in the case of slightly uneven old substrates, which may need to be renewed, that a flexible to elastic washer is also present between the base part of the base body and the substrate. A particularly inexpensive easy assembly and fastening option of the Anchoring element according to the invention results from the fact that initially a screw with a threaded shaft extending to the screw head is used and the threaded shaft is cut and / or ground in an already aligned state of the anchoring element in a plane aligned with the end face plane of the clamping nut facing away from the ground, and that The depth of the one-sided recess in the base body is greater than the height of the clamping nut. Sufficiently flat anchoring elements for, in particular, thin-layer floor coverings can be designed in a constructive and also assembly-technically advantageous manner if the clamping nut is provided with at least two openings, diametrically opposite one another on a circumference of a part circle, for receiving appropriately shaped claws of a clamping tool. For manufacturing reasons, embodiments of the anchoring element according to the invention have proven to be favorable, in which the radially outwardly projecting extension is formed as a disk-shaped ring flange on the outer circumference of the base body, which is formed both at a distance from the underground level and from the outer cover level and, if appropriate, also with Breakthroughs and / or is provided with radial slots. Both in terms of production and for reasons of easy assembly, it is advantageous if the cover is designed with a preferably turned peripheral edge facing the base body and is fitted with a tight fit onto the correspondingly turned outer circumference of the base body. The anchoring element according to the invention is primarily suitable for the local fastening of floor coverings to preferably prepared, at least cleaned substrates, by embedding the clamped base body provided with a cover in a floor covering, preferably made of steel fiber reinforced synthetic resin mortar, which is applied to the surface and is at least flush with the outer cover plane becomes.

Wird zum anzufertigenden Fussbodanbelag ein an sich bekanntes stahlfaserverstärktes Kunstharzmörtel etwa gemäss HU-A-174 992 verwendet, so ist es empfehlenswert, alle 50 bis 70 m2 Wärmedehnungsspalte vorzusehen. Die auf diese Weise vorgesehenen etwa kasettenartig aufgeteilten Flächenelemente des Fussbodenbelages sind zumindest in jedem Eckbereich durch Anwendung von erfindungsgemässen Verankerungselementen zum Untergrund zu befestigen. Dadurch ist eine Wärmedehnungsmöglichkeit der Bodenbelagflächen durchaus gewährleistet, während einer Aufwölbung hinreichend vorgebeugt ist.If a steel fiber-reinforced synthetic resin mortar known per se, for example in accordance with HU-A-174 992, is used for the floor covering to be produced, it is advisable to provide thermal expansion gaps every 50 to 70 m 2 . The surface elements of the floor covering, which are provided in this way and are divided in a cassette-like manner, are to be fastened to the subsurface at least in each corner area by using anchoring elements according to the invention. As a result, the possibility of thermal expansion of the floor covering surfaces is guaranteed, while a bulge is sufficiently prevented.

Bie Erfindung wird nachstehend an einem Ausführungsbeispiel anhand der beiliegenden Zeichnung, welche ein beispielsweises Verankerungselement im Schnitt darstellt, ausführlicher beschrieben.The invention is described in more detail below using an exemplary embodiment with reference to the accompanying drawing, which shows an exemplary anchoring element in section.

In einem aus Beton bestehenden Untergrund 1 von hinreichender Dicke und Tragfestigkeit ist in einer Bohrung 10 ein an sich bekannter Stahldübel 30, vorzugsweise vom TYP HILTI MKD-M12 mittels einer Schraube 32 fest verspannt durch Spreizwirkung fest verankert. Dies geschieht auf die Weise, dass man nach Anfertigug der Bohrung 10 mit Hilfe eines Hartmetall-Steinbohrers vom Durcbmesser 0 15 mm unter Zuhilfenahme einer Schlagbohrmaschine zunächst den Dübel 30 in die Bohrung 10 einlegt. Hiernach wird eine vorzugsweise aus Gummiplatte angefertigte, weichelastische Unterlegscheibe 35 und hierauf ein Grundkörper 31 mit seinem mit einer zentralen Bohrung 314 versehenen Bodenteil 311 etwa koaxial zur Bohrung 10 auf die vorzugsweise durch Reinigung vorbereitete Oberfläche des Untergrundes 1 aufgesetzt. Auf dem Gewindeschaft 321 der Schraube 32 wird dann eine flachscheibenförmige Spannmutter 33 bis zur Kopfnähe lose aufgeschraubt. Hiernach schraubt man die Schraube 32 in das Innengewinde des Dübels 30 hinein, und die Schraube 32 wird so fest wie möglich angezogen, wodurch sie durch Spreizwirkung über den Dübel 30 im Untergrund 1 auf an sich bekannte Weise fest verankert ist. Hierauf folgend wird der Grundkörper 31 mit Hilfe der Spannmutter 33 gegen die Oberfläche des Untergrundes 1 (unter Zwischenklemmung der weichelastischen Unterlegscheibe 35) verspannt am Untergrund 1 befestigt. Zum Anziehen der Spannmutter 33 verwendet man zweckmässig ein mit Krallen versehenes (nicht dargestelltes) Zielwerkzeug, dessen Krallen in einander diametral gegenüberliegend ausgebildete Bohrungen 331 der Spannmutter 33 eingreifen können. Im auf obiger Weise festgezogenen Zustand der Spannmutter 33 wird der Gewindeschaft 321 der Schraube 32 zweckmässig in einer mit der oberen Stirnebene der Spannmutter 33 unmittelbar fluchtenden Ebene abgeschnitten und/oder vorzugsweise mit Hilfe einer Eckschleifmaschine abgeschliffen. Hiernach wird auf den entlang seiner äusseren Mantelfläche passgedrehten oberen Rand des Grundkörpers 31 ein mit einem auf seiner Innenfläche ebenfalls passgedrehten umlaufenden Rand 341 ausgebildeter Deckel 34 mit engem Paßsitz aufgesetzt. Somit entsteht ein Verankerungselement 3, welches im Sinne der Erfindung folgende Merkmale und Eigenschaften zeigt.A steel dowel 30, known per se, preferably of the HILTI MKD-M12 type, is firmly anchored by means of a screw 32 in an existing concrete base 1 of sufficient thickness and load-bearing capacity in a bore 10 and firmly anchored by means of a spreading effect. This is done by first inserting the dowel 30 into the bore 10 after making the bore 10 with the aid of a hard metal stone drill with a diameter of 15 mm and using an impact drill. Thereafter, a soft-elastic washer 35, preferably made of rubber sheet, and then a base body 31 with its base part 311 provided with a central bore 314 are placed approximately coaxially to the bore 10 on the surface of the substrate 1, preferably prepared by cleaning. A flat disk-shaped clamping nut 33 is then loosely screwed onto the threaded shaft 321 of the screw 32 up to the head. Thereafter, the screw 32 is screwed into the internal thread of the dowel 30, and the screw 32 is tightened as tightly as possible, as a result of which it is firmly anchored in the base 1 in a manner known per se by the spreading action via the dowel 30. Following this, the base body 31 is clamped to the surface 1 with the aid of the clamping nut 33 against the surface of the base 1 (with the soft-elastic washer 35 clamped in between). To tighten the clamping nut 33, a target tool provided with claws (not shown) is expediently used, the claws of which can engage in bores 331 of the clamping nut 33 which are diametrically opposed to one another. When the clamping nut 33 is tightened in the above manner, the threaded shaft 321 of the screw 32 is expediently cut off in a plane which is directly aligned with the upper end plane of the clamping nut 33 and / or is preferably ground off with the aid of a corner grinding machine. Thereafter, a cover 34 with a snug fit is formed on the upper edge of the base body 31, which is turned to fit along its outer circumferential surface, and has a peripheral edge 341 which is also turned to fit on its inner surface. This creates an anchoring element 3, which shows the following features and properties in the sense of the invention.

In gemäss der Zeichnung vertikaler Richtung ist der Grundkörper 31 spielfrei, d. h. ohne Bewegungsfreiheitsgrad mit dem Untergrund 1 verbunden. Ber Grundkörper 31 weist ferner einen an seinem Aussenumfang radial abstehenden umlaufenden Ringflansch 313 auf, der sowohl von der Oberfläche des Untergrundes 1, wie auch von der äusseren, gemäss der Zeichnung oberen Deckelebene um Abstand verlaufend ausgebildet, und vorzugsweise mit Durchbrüchen oder mit radialen Schlitzen zwecks einer erleichterten Ausfüllung des darunterliegenden lichten Raums mit der Mörtelmasse eines Fussbodenbelages 2 versehen ist.In the vertical direction according to the drawing, the base body 31 is connected to the base 1 without play, ie without a degree of freedom of movement. Furthermore, the base body 31 has a circumferential annular flange 313 which projects radially on its outer circumference and extends both from the surface of the substrate 1, as well as extending from the outer, according to the drawing upper cover level by a distance, and is preferably provided with openings or with radial slots in order to facilitate filling of the clear space below with the mortar mass of a floor covering 2.

Die um die abgeschnittene Gewindeschaft 321 festgezogene Spannmutter 33 sitzt in einer ursprünglich einseitig (in der Zeichnung nach oben hin) geöffneten, mit dem Deckel 34 nunmehr abgeschlossenen Eindrehung 312 des Grundkörpers 31 mit rings herum hinreichend grossen Spielraum umgeben, da einerseits der Durchmesser der Eindrehung 312 grösser als derjenige der Spannmutter 33, andererseits die Tiefe t der Eindrehung 312 grösser als die Spannmutterhöhe h ist. Somit ist einerseits ein umlaufender lichter Ringspalt um die Spannmutter 33, andererseits ein lichter Abstand (der allerdings vernachlässigbar klein sein kann) zwischen der oberen Stirnfläche der Spannmutter 33 und der inneren Stirnfläche der mit dem Grundkörper 31 praktisch eine Einheit bildenden Deckels 34 vorhanden. Hieraus resultiert, dass sicb ein vorzugsweise aus stahlfaserverstärktem Kunstharzmörtel auf den Untergrund 1 aufgebrachter, das erfindungsgemässe Verankerungselement 3 oder mehrere desselben einbettender Fussbodenbelag 2 lediglich in der Fussbodenebene in allen Richtungen frei bewegen kann, was insbesondere zum ausgleich und zur aufnahme von Wärmedehnungen zwecks Vermeidung der Entstehung von Spannungsspitzen im Belag, die gegebenenfalls zu Rissen und Brüchen führen könnten, von Vorteil, ja sogar oft erforderlich ist. Die Dicke des Fussbodenbelages 2 ist dabei mindestens so zu wählen, dass die geglättete Belagoberfläche mit der oberen Deckelfläche zumindest fluchtet.The tightening nut 33 tightened around the cut-off threaded shaft 321 is seated in an indentation 312 of the base body 31, which was originally opened on one side (upwards in the drawing) and is now closed with the cover 34, with a sufficiently large surrounding space since, on the one hand, the diameter of the indentation 312 greater than that of the clamping nut 33, on the other hand the depth t of the recess 312 is greater than the clamping nut height h. Thus, on the one hand there is a circumferential clear annular gap around the clamping nut 33, and on the other hand there is a clear distance (which, however, can be negligibly small) between the upper end face of the clamping nut 33 and the inner end face of the cover 34 which practically forms a unit with the base body 31. The result of this is that a floor covering 2, preferably made of steel fiber-reinforced synthetic resin mortar, which is embedded on the substrate 1 and embeds the anchoring element 3 or more of the same according to the invention, can only move freely in all directions in the floor plane, which in particular to compensate and absorb thermal expansion in order to avoid the occurrence of stress peaks in the covering, which could possibly lead to cracks and breaks, is an advantage, even often required. The thickness of the floor covering 2 is to be selected at least so that the smoothed surface of the covering is at least flush with the upper surface of the cover.

Claims (7)

1. Anchoring element for securing covering layers, in particular floor coverings, to a substrate (1) having:
a plug (30) with an internal thread anchorable in a hole (10) in the substrate and
a bolt shank (321) anchored with the substrate (1) due to an expansion effect in the plug,

an approximately cup-shaped main body (31) formed with a one sided upwardly open recess (312), whose centrally bored out bottom part (311) lies on the substrate (1), and is provided on the outside circumference with at least one radial outwardly protruding extension (313), the bolt shank (321) protruding through the central hole (314) of said main body in the bottom part (311), characterized in that
the main body (31) is coaxially arranged around the bolt shank (321) and is tensioned against the substrate (1) by way of a disc-shaped preferably flat tension nut (33) screwed onto the bolt shank (321 ),
in that the outer edge of the tension nut (33) has a separation in the radial direction on all sides from the internal wall of the recess (312) of the main body (31) and that the main body (31) alternatively the recess (312), is closed off by a disc-shaped cover (34) to achieve a planar surface with the covering layers to be anchored.
2. Anchoring element according to claim 1, characterized in that
between the bottom part (311) of the main body (31) and the substrate (1), a non-rigid, alternatively elastic, washer (35) is provided.
3. Anchoring element according to claim 1 or 2, characterized in that
the bolt shank (321) is cut off and/or ground off in a plane which is flush with the plane of the top face of the tension nut (33) facing away from the substrate (1) when the anchoring element (3) is in the tensioned and tightened condition, and that the depth (t) of the turned out recess (312) in the main body (31) is greater than the height (h) of the tension nut.
4. Anchoring element according to any one of the claims 1 to 3, characterized in that
the tension nut (33) is constructed with at least two breaches (331) lying diametrically opposite to each other on a reference circle.
5. Anchoring element according to any one of the claims 1 to 4, characterized in that
the radially outwardly protruding extension (313) is formed as a disc-shaped ring-flange on the outer circumfernece of the main body (31), which is arranged with a separation from the plane of the substrate as well as from the outer plane of the cover and is provided optionally with breaches and/or radial slits.
6. Anchoring element according to any one of the claims 1 to 5, characterized in that
the cover (34) is formed with a surrounding, preferably turned, lip (341) projecting towards the substrate (31) and which is located on the outer circumference of the main body (31) which has been correspondingly turned to fit with a tight fit.
7. Anchoring element according to any one of the claims 1 to 6, characterized in that
the anchoring element (3) is embedded in the covering layer (2) and that the outer plane of the cover (34) is flush with the upper side of the covering layer.
EP19820903177 1982-10-21 1982-10-21 Anchoring element for securing particularly floor coverings to a substrate Expired EP0122256B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/HU1982/000055 WO1984001597A1 (en) 1982-10-21 1982-10-21 Anchoring element for securing particularly floor coverings to a substrate

Publications (3)

Publication Number Publication Date
EP0122256A1 EP0122256A1 (en) 1984-10-24
EP0122256A4 EP0122256A4 (en) 1985-04-24
EP0122256B1 true EP0122256B1 (en) 1988-01-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820903177 Expired EP0122256B1 (en) 1982-10-21 1982-10-21 Anchoring element for securing particularly floor coverings to a substrate

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EP (1) EP0122256B1 (en)
DE (1) DE3277975D1 (en)
WO (1) WO1984001597A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105863208B (en) * 2016-04-13 2019-04-26 哈尔滨理工大学 Disk strain formula thread tapping, which rises, fills in fixed device and installation method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD87386A (en) *
FR1537048A (en) * 1967-06-30 1968-08-23 Prefabricated slabs
DE2338704C2 (en) * 1969-06-06 1983-05-19 J. Ertl Kg Baustoff-Werk Moers, 4130 Moers Flat roof covering made from prefabricated roof panels
US3868802A (en) * 1972-10-11 1975-03-04 Rohr Industries Inc Flush joint structure for adjoining panels
FR2352130A1 (en) * 1976-05-18 1977-12-16 Allibert Exploitation Covering panels for room walls - has rectangular sections slidable onto panel edges for securing together and apertured for wall fittings
US4137681A (en) * 1977-10-06 1979-02-06 A. P. Green Refractories Co. Fastening device for securing wear-resistant tiles to a backing
SU796489A1 (en) * 1978-08-09 1981-01-15 Предприятие П/Я Г-4488 Nut

Also Published As

Publication number Publication date
EP0122256A1 (en) 1984-10-24
DE3277975D1 (en) 1988-02-18
EP0122256A4 (en) 1985-04-24
WO1984001597A1 (en) 1984-04-26

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