EP0428664B1 - Fastening element for securing insulating strips and/or insulating boards to a solid substructure - Google Patents

Fastening element for securing insulating strips and/or insulating boards to a solid substructure Download PDF

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Publication number
EP0428664B1
EP0428664B1 EP90908198A EP90908198A EP0428664B1 EP 0428664 B1 EP0428664 B1 EP 0428664B1 EP 90908198 A EP90908198 A EP 90908198A EP 90908198 A EP90908198 A EP 90908198A EP 0428664 B1 EP0428664 B1 EP 0428664B1
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EP
European Patent Office
Prior art keywords
tubular extension
fastener
fastening element
substructure
screw nut
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Expired - Lifetime
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EP90908198A
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German (de)
French (fr)
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EP0428664A1 (en
Inventor
Remo Kluser
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SFS Stadler Holding AG
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SFS Stadler Holding AG
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Publication of EP0428664A1 publication Critical patent/EP0428664A1/en
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    • 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
    • E04F13/0853—Separate fastening elements without load-supporting elongated furring elements between wall and covering elements adjustable perpendicular to the wall

Definitions

  • the invention relates to a fastening element for fixing insulating sheets and / or plates on a solid substructure, with a large-area washer and a tubular extension for passage and for guiding a fastener engaging in the fixed substructure.
  • Such fasteners are used to fasten insulating materials to a solid surface, e.g. when fastening insulation panels to roofs.
  • a solid surface e.g. when fastening insulation panels to roofs.
  • a worker steps on a washer or in the immediate vicinity, or that a vehicle or tools drive over the washer.
  • Such localized forces can cause the free end of the fastener to pierce through the applied seal, or the washer to pierce the roofing membrane applied to the insulating material.
  • a fastening element has already become known (FR-A-2 620 175), in which a screw with a screw head is inserted into a tubular extension.
  • the collar which directly adjoins the screw shaft in the direction of the screw head engages in a groove at the lower end of the tubular extension and, in addition, noses which are directed radially inwards are offset by 120 ° to one another, each of which engages on every second boundary surface of a hexagon head. This creates on the one hand an anti-rotation between the screw head and thus the screw and the tubular extension and on the other hand a locking against axial movement between the screw and the tubular extension.
  • a disadvantage of the known designs is that, depending on the thickness of the insulating sheets and / or panels, and in particular if the insulating sheets are of different thicknesses on a roof, a large number of different lengths of fasteners, that is to say generally screws, are required, since the previous one Execution of the screw head on the bottom of the interior of the tubular extension must come to rest, since the tubular extension and the washer must be pressed against the top of the insulating sheet. If it does not matter how far such a screw is screwed into the fixed substructure, this is less important. If the fixed substructure consists, for example, of concrete slabs or of wood with a view panel, then these screws cannot be screwed into this substructure as far as desired.
  • the invention has therefore set itself the task of creating a fastener with which a compensation for the thickness of the insulating sheets is possible in a relatively large area, a telescopic movement between the fastener and the tubular extension still taking place and the depth of insertion of the fastener into the substructure can always remain the same size.
  • the fastener has one or more wave-shaped bulge (s) at its one end region and with this end can be driven into a prepared bore in the fixed substructure, that the end region of the fastener projecting into the tubular extension is provided with a thread, and that a screw nut can be inserted into the interior of the tubular extension and screwed onto this end region of the fastener.
  • a screw with a screw head is no longer used, but rather a fastener which projects into the interior of the tubular extension and is fixed there by a screw nut screwed onto it.
  • the corresponding end region of the fastener will therefore protrude more or less far into the tubular extension, depending on the thickness of the insulating sheets and / or plates, with the special design making it possible to re-tension or readjust at any time.
  • the fastener that is inserted into the substructure by driving into a hole can always be driven into the substructure by the same amount. It no longer matters whether the insulating sheets are of the same thickness over the entire roof or whether they become wedge-shaped towards an edge area, for example; the fasteners of the same length can practically always be used, although they do not have to be driven further into the substructure.
  • the length of the tubular extension is sufficient to compensate for these differences in thickness and still enable a telescopic movement between the tubular extension and the fastener.
  • a hole can be prepared here, which is designed to fit the corresponding end of the fastener. Due to the wave-shaped bulge, the end portion to be driven in is inevitably deformed when the fastener is hammered in, in that it practically resumes the original cylindrical shape, so that this positive and non-positive connection ensures optimum security against tearing out.
  • a type of nail with a wavy bulge is known (US-A-2 376 936), this nail is not intended for use in prepared bores. In addition, this nail is provided with a head in the usual way, so that it would not be usable for the application according to the invention.
  • insulating sheets 1 are attached to a solid base 2.
  • a fastening element which has a large-area washer 3 with a tubular extension 4.
  • the large-area washer 3 is pressed against the surface 6 of the insulating sheet 1 via the tubular extension 4.
  • the washer 3 and the tubular extension 4 are expediently made from separate parts and can therefore also be formed from different materials.
  • the substructure 2 in the illustration according to FIG. 1 consists of a concrete slab. Holes 7 are made in this concrete slab, into which the fasteners 5 are then driven with their ends 8.
  • the drive-in end 8 has an essentially smooth surface, but at least one bulge 9, this bulge 9 providing sufficient positive and non-positive retention in the substructure 2 made of concrete.
  • a stop collar 10 ensures that the impact end 8 is always driven into the bore 7 at the same depth, which is particularly important in the case of a relatively thin-walled concrete substructure. With such a configuration, fastener 5 can thus be driven directly into a substructure 2 formed from concrete.
  • the design of the fastening element according to the invention is therefore of essential importance wherever only a certain screw-in or drive-in depth of the fastener is possible or desired, although essentially the same length of fasteners 5 can always be used, since they are more or less far in can protrude the tubular extension 4.
  • a locking element in the form of a screw nut, which engages around the fastener 5, can be screwed into the end region 12 of the fastener 5 projecting into the interior 11 of the tubular extension 4.
  • the end region 12 of the fastener 5 projecting into the tubular extension 4 is provided with a thread 13.
  • a screw nut 14 can be inserted through the interior 11 of the tubular extension 4 and can be screwed onto the end region 12 of the fastener 5.
  • a special tool 15 for tightening the screw nut 14 can be provided, this tool 15 having a corresponding receiving space 16 for the projecting area of the end area 12 of the fastener 5.
  • this version of the screw nut 14 as a hexagon screw, the tool must cover the side areas can overlap this nut 14.
  • a version of a screw nut 14 is used, as is shown in FIGS. 4 and 5, either the screw nut 14 can be made thicker or the tubular extension 4 can be made slimmer.
  • axially parallel projecting engagement elements 17 are provided, on which a corresponding tool for turning this screw nut 14 can be attached.
  • the screw nut 14 is secured against rotation, in such a way that the screw nut 14 is held against rotation in the tubular extension 4.
  • This can be achieved, for example, (see FIGS. 7 and 8) in that a preferably polygonal outer boundary of the screw nut 14 approximately corresponds to the cross section of the interior 11 of the tubular extension 4.
  • FIGS. 7 and 8 An embodiment variant is shown in FIGS. 7 and 8.
  • a corresponding recess in the washer 3 is provided for receiving the end edge 18 of the tubular extension 4, the shape of the end edge 18 and the recess in the washer 3 being identical. In the embodiment shown, a hexagonal shape has been chosen.
  • the end edge 18 could be elliptical, triangular or polygonal or be formed with projections which then engage in corresponding recesses or recesses in the washer 3.
  • tubular sleeve 4 can also be designed in any cross-section, in each case in adaptation to the outer contour of the screw nut 14, the screw nut 14 of course not having to lie circumferentially closed on the inner wall of the tubular sleeve 4 in order to provide security against rotation.
  • the present invention thus creates the possibility of being able to use fasteners of essentially the same length everywhere when fastening insulating sheets and / or panels to a solid substructure, although these are each driven into the substructure 2 at a constant depth.
  • the relatively simple structural measures have therefore created an optimal possibility which has proven itself particularly well in the case of pitched roofs, where the insulating material formed by insulating sheets and / or panels runs out in a wedge shape. So it is always an attitude from above, i.e. due to the tubular extension.

Abstract

PCT No. PCT/EP90/00854 Sec. 371 Date Apr. 3, 1991 Sec. 102(e) Date Apr. 3, 1991 PCT Filed May 28, 1990 PCT Pub. No. WO90/15206 PCT Pub. Date Dec. 13, 1990.A fastening assembly for securing insulating sheetings or boards to a solid base has a tubular extension secured to a large surface washer at the top end thereof, a nut securely held against rotation in the interior of the tubular extension and an elongated fastener inserted at its top end in to the tubular extension and locked by the nut and which is engaged at its lower end which has a bulge, in the solid base.

Description

Die Erfindung betrifft ein Befestigungselement zur Fixierung von Isolierbahnen und/oder -platten auf einem festen Unterbau, mit einer großflächigen Unterlegscheibe und einem rohrförmigen Fortsatz zum Durchtritt und zur Führung eines in den festen Unterbau eingreifenden Befestigers.The invention relates to a fastening element for fixing insulating sheets and / or plates on a solid substructure, with a large-area washer and a tubular extension for passage and for guiding a fastener engaging in the fixed substructure.

Solche Befestigungselemente werden zum Befestigen von Isoliermaterialien auf festen Untergrund eingesetzt, so z.B. bei der Befestigung von Isolierplatten auf Dächern. Wenn Materialien auf einem Dach transportiert werden müssen, kann es vorkommen, daß beispielsweise ein Arbeiter auf eine Unterlegscheibe oder in deren näheren Umgebung auftritt, oder daß ein Fahrzeug oder Werkzeuge über die Unterlegscheibe hinwegfahren. Derart örtlich begrenzte Kräfte können dazu führen, daß das freie Ende des Befestigers durch die aufgebrachte Abdichtung hindurchstößt, oder daß die Unterlegscheibe die auf dem Isoliermaterial aufgebrachte Dachbahn durchstößt.Such fasteners are used to fasten insulating materials to a solid surface, e.g. when fastening insulation panels to roofs. When materials have to be transported on a roof, it can happen, for example, that a worker steps on a washer or in the immediate vicinity, or that a vehicle or tools drive over the washer. Such localized forces can cause the free end of the fastener to pierce through the applied seal, or the washer to pierce the roofing membrane applied to the insulating material.

Es ist bereits ein Befestigungselement bekannt geworden (FR-A-2 620 175), bei welchem eine Schraube mit einem Schraubenkopf in einen rohrförmigen Fortsatz eingesetzt ist. Der unmittelbar in Richtung zum Schraubenschaft an den Schraubenkopf anschliessende Bund greift in eine Rille am unteren Ende des rohrförmigen Fortsatzes ein und außerdem sind radial nach innen gerichtete Nasen um 120° versetzt zueinander angeordnet, welche jeweils an jeder zweiten Begrenzungsfläche eines Sechskantkopfes angreifen. Es wird dadurch einerseits eine Verdrehsicherung zwischen dem Schraubenkopf und somit der Schraube und dem rohrförmigen Fortsatz geschaffen und andererseits eine Verriegelung gegen eine axiale Bewegung zwischen der Schraube und dem rohrförmigen Fortsatz. Bei einer solchen Ausgestaltung wäre es wohl denkbar, daß die Schraube bei einer entsprechenden Krafteinwirkung auf den rohrförmigen Fortsatz teleskopartig in den rohrförmigen Fortsatz eindringen kann, wobei die aufgebrachte Abdichtung trotzdem nicht durchstoßen wird. Wenn jedoch der Schraubenkopf einmal durch diese axiale Belastung aus seiner Verankerung am unteren Ende des rohrförmigen Fortsatzes herausgedrückt wird, kann sich dieser nicht wieder selbsttätig in diese Lage zurückbewegen, und es wird sich daher schon bei der geringsten Verdrehung zwischen dem rohrförmigen Fortsatz und dem Befestiger eine Befestigungsstelle ergeben, welche tiefer liegt als die benachbarten Befestigungselemente.A fastening element has already become known (FR-A-2 620 175), in which a screw with a screw head is inserted into a tubular extension. The collar which directly adjoins the screw shaft in the direction of the screw head engages in a groove at the lower end of the tubular extension and, in addition, noses which are directed radially inwards are offset by 120 ° to one another, each of which engages on every second boundary surface of a hexagon head. This creates on the one hand an anti-rotation between the screw head and thus the screw and the tubular extension and on the other hand a locking against axial movement between the screw and the tubular extension. With such a configuration, it would be conceivable that the screw can penetrate the tubular extension telescopically with a corresponding force on the tubular extension, the applied seal nevertheless not being pierced. However, if the screw head is pressed out of its anchoring at the lower end of the tubular extension by this axial load, it cannot move back into this position automatically, and therefore there will be even the slightest twist between the tubular extension and the fastener result in a fastening point which is lower than the adjacent fastening elements.

Es wurde auch schon eine Ausführung vorgeschlagen (GB-A-1 499 224), bei der an der relativ großflächigen Unterlegscheibe ein rohrförmiger Fortsatz angeordnet ist, in welchem eine Schraube eingesetzt ist. Der Kopf dieser Schraube liegt dabei innerhalb dieses rohrförmigen Fortsatzes und ist gegenüber der Oberseite der Unterlegscheibe relativ weit versenkt angeordnet, so daß sich die erforderliche Schraubenlänge wesentlich verkürzt. Die Dicke der zu befestigenden Isoliermaterialien kann daher durch das Zusammenwirken der Länge des rohrförmigen Fortsatzes und der Länge der Schraube überbrückt werden. In diesem Zusammenhang ist es auch schon bekannt geworden, die Unterlegscheibe und den rohrförmigen Fortsatz aus zwei getrennten Teilen zu fertigen. Bei beiden bekannten Ausgestaltungen besteht die Möglichkeit, daß sich das gesamte Befestigungselement bei entsprechender Belastung teleskopartig ineinanderschieben kann, also z.B. dann, wenn eine Person auf die Unterlegscheibe auftritt.An embodiment has also already been proposed (GB-A-1 499 224) in which a tubular extension, in which a screw is inserted, is arranged on the relatively large-area washer. The head of this screw lies within this tubular extension and is arranged relatively far recessed relative to the top of the washer, so that the required screw length is significantly reduced. The thickness of the insulating materials to be fastened can therefore be bridged by the interaction of the length of the tubular extension and the length of the screw. In this context, it has also become known to manufacture the washer and the tubular extension from two separate parts. In both known configurations there is the possibility that the entire fastening element can telescopically slide into one another under a corresponding load, that is to say e.g. then when a person steps on the washer.

Nachteilig bei den bekannten Ausführungen ist es aber, daß je nach Dicke der Isolierbahnen und/oder -platten und insbesondere bei unterschiedlicher Dicke der Isolierbahnen auf einem Dach eine Vielzahl verschiedener Längen von Befestigern, also in der Regel Schrauben, benötigt wird, da bei der bisherigen Ausführung der Schraubenkopf am Grund des Innenraumes des rohrförmigen Fortsatzes zur Anlage kommen muß, da der rohrförmige Fortsatz und die Unterlegscheibe gegen die Oberseite der Isolierbahn angepreßt werden müssen. Wenn es gleichgültig ist, wie weit eine solche Schraube in den festen Unterbau eingeschraubt wird, spielt dies weniger eine Rolle. Wenn der feste Unterbau beispielsweise aus Betonplatten oder aus Holz mit einer Sichtverschalung besteht, dann können diese Schrauben nicht beliebig weit in diesen Unterbau eingedreht werden.A disadvantage of the known designs, however, is that, depending on the thickness of the insulating sheets and / or panels, and in particular if the insulating sheets are of different thicknesses on a roof, a large number of different lengths of fasteners, that is to say generally screws, are required, since the previous one Execution of the screw head on the bottom of the interior of the tubular extension must come to rest, since the tubular extension and the washer must be pressed against the top of the insulating sheet. If it does not matter how far such a screw is screwed into the fixed substructure, this is less important. If the fixed substructure consists, for example, of concrete slabs or of wood with a view panel, then these screws cannot be screwed into this substructure as far as desired.

Die Erfindung hat sich daher zur Aufgabe gestellt, ein Befestigungselement zu schaffen, mit welchem in einem relativ großen Bereich ein Ausgleich bezüglich der Dicke der Isolierbahnen möglich ist, wobei trotzdem eine teleskopartige Bewegung zwischen Befestiger und rohrförmigem Fortsatz stattfinden und die Einsetztiefe des Befestigers in den Unterbau stets gleich groß bleiben kann.The invention has therefore set itself the task of creating a fastener with which a compensation for the thickness of the insulating sheets is possible in a relatively large area, a telescopic movement between the fastener and the tubular extension still taking place and the depth of insertion of the fastener into the substructure can always remain the same size.

Erfindungsgemäß wird dies dadurch erreicht, daß der Befestiger an seinem einen Endbereich eine oder mehrere wellenförmige Ausbuchtung(en) aufweist und mit diesem Ende in eine vorbereitete Bohrung im festen Unterbau einschlagbar ist, daß der in den rohrförmigen Fortsatz hineinragende Endbereich des Befestigers mit einem Gewinde versehen ist, und daß eine Schraubenmutter in den Innenraum des rohrförmigen Fortsatzes einführbar und auf diesen Endbereich des Befestigers aufschraubbar ist.According to the invention, this is achieved in that the fastener has one or more wave-shaped bulge (s) at its one end region and with this end can be driven into a prepared bore in the fixed substructure, that the end region of the fastener projecting into the tubular extension is provided with a thread, and that a screw nut can be inserted into the interior of the tubular extension and screwed onto this end region of the fastener.

Es wird also bei der erfindungsgemäßen Ausführung keine Schraube mit einem Schraubenkopf mehr eingesetzt, sondern ein Befestiger, der in den Innenraum des rohrförmigen Fortsatzes hineinragt und dort durch eine auf diesen aufgedrehte Schraubenmutter fixiert wird. Dadurch ist es möglich, die als Verriegelungselement wirkende Schraubenmutter so zu plazieren, daß der rohrförmige Fortsatz und somit auch die großflächige Unterlegscheibe in einer Stellung fixiert sind, bei der sie an der Oberseite der Isolierbahnen und/oder -platten angepreßt sind. Der entsprechende Endbereich des Befestigers wird daher je nach Dicke der Isolierbahnen und/oder -platten mehr oder weniger weit in den rohrförmigen Fortsatz hineinragen, wobei eben durch die besondere Ausbildung jederzeit ein Nachspannen bzw. Neueinstellen möglich wäre. Der Befestiger, der durch Einschlagen in eine Bohrung in den Unterbau eingesetzt wird, kann also immer um das gleiche Maß in den Unterbau eingeschlagen werden. Ob nun die Isolierbahnen über das ganze Dach gleich dick sind, oder ob sie beispielsweise zu einem Randbereich hin keilförmig dünner werden, spielt dabei keine Rolle mehr; es können praktisch immer die gleich langen Befestiger eingesetzt werden, obwohl sie nicht weiter in den Unterbau eingeschlagen werden müssen. Die Länge des rohrförmigen Fortsatzes reicht aus, um diese Dickenunterschiede auszugleichen und trotzdem eine teleskopartige Bewegung zwischen dem rohrförmigen Fortsatz und dem Befestiger zu ermöglichen.Thus, in the embodiment according to the invention, a screw with a screw head is no longer used, but rather a fastener which projects into the interior of the tubular extension and is fixed there by a screw nut screwed onto it. This makes it possible to place the nut acting as a locking element in such a way that the tubular extension and thus also the large-area washer are fixed in a position in which they are pressed against the top of the insulating sheets and / or plates. The corresponding end region of the fastener will therefore protrude more or less far into the tubular extension, depending on the thickness of the insulating sheets and / or plates, with the special design making it possible to re-tension or readjust at any time. The fastener that is inserted into the substructure by driving into a hole can always be driven into the substructure by the same amount. It no longer matters whether the insulating sheets are of the same thickness over the entire roof or whether they become wedge-shaped towards an edge area, for example; the fasteners of the same length can practically always be used, although they do not have to be driven further into the substructure. The length of the tubular extension is sufficient to compensate for these differences in thickness and still enable a telescopic movement between the tubular extension and the fastener.

Durch die besondere Ausbildung des Befestigers an seinem Einschlagende eignet er sich in hervorragender Weise für den erfindungsgemäßen Einsatzzweck. Es kann hier eine Bohrung vorbereitet werden, welche gegenüber dem entsprechenden Ende des Befestigers engpassend ausgeführt ist. Durch die wellenförmige Ausbuchtung wird beim Einschlagen des Befestigers der einzuschlagende End bereich zwangsläufig deformiert, und zwar dadurch, daß dieser praktisch wieder die ursprüngliche zylindrische Gestalt annimmt, so daß durch diese form- und kraftschlüssige Verbindung eine optimale Ausreißsicherheit gewährleistet wird. Es ist zwar eine Art Nagel mit einer wellenförmigen Ausbuchtung bekannt (US-A-2 376 936), jedoch ist dieser Nagel nicht zum Einsatz in vorbereitete Bohrungen vorgesehen. Außerdem ist dieser Nagel in üblicher Weise mit einem Kopf versehen, so daß er für die erfindungsgemäße Anwendung nicht einsetzbar wäre.Due to the special design of the fastener at its driving end, it is excellently suitable for the application according to the invention. A hole can be prepared here, which is designed to fit the corresponding end of the fastener. Due to the wave-shaped bulge, the end portion to be driven in is inevitably deformed when the fastener is hammered in, in that it practically resumes the original cylindrical shape, so that this positive and non-positive connection ensures optimum security against tearing out. Although a type of nail with a wavy bulge is known (US-A-2 376 936), this nail is not intended for use in prepared bores. In addition, this nail is provided with a head in the usual way, so that it would not be usable for the application according to the invention.

Es ist aber auch eine konstruktiv einfache Ausführung, wenn der in den rohrförmigen Fortsatz hineinragende Endbereich des einschlagbaren Befestigers mit einem Gewinde versehen ist und die Verriegelung durch die in den Innenraum des rohrförmigen Fortsatzes einführbare Schraubenmutter erfolgt. Es ist dann möglich, die Schraubenmutter je nach Bedarf mehr oder weniger weit anzuziehen, um je nach Dicke der Isolierbahnen die ordnungsgemäße Auflage der Unterlegscheibe auf der Oberseite der Isolierbahnen zu bewerkstelligen.However, it is also of a structurally simple design if the end region of the impactable fastener projecting into the tubular extension is provided with a thread and the locking takes place by means of the screw nut which can be inserted into the interior of the tubular extension. It is then possible to tighten the screw nut to a greater or lesser extent as required, in order to ensure that the washer is properly placed on the top of the insulating membrane, depending on the thickness of the insulating membrane.

Weitere erfindungsgemäße Merkmale und besondere Vorteile werden in der nachstehenden Beschreibung anhand der Zeichnungen noch näher erläutert. Es zeigen:

  • Fig. 1 einen Schnitt durch einen festen Unterbau mit aufgelegter Isolierbahn und einem erfindungsgemässen Befestigungselement;
  • Fig. 2 einen Schnitt durch den rohrförmigen Fortsatz mit eingesetztem Befestiger, gegenüber Fig. 1 vergrössert dargestellt;
  • Fig. 3 die gleiche Darstellung wie Fig. 2, wobei jedoch der Befestiger mit seinem einen Endbereich weiter in den rohrförmigen Fortsatz hineinragt;
  • Fig. 4 und 5 in Seitenansicht und Draufsicht eine besondere Ausführungsform einer auf den Befestiger aufsetzbaren Schraubenmutter;
  • Fig. 6 eine vergrösserte Darstellung eines Befestigers, wie er bei den Ausführungen nach den Fig. 1 bis 3 eingesetzt ist;
  • Fig. 7 einen Schnitt durch ein erfindungsgemässes Befestigungselement;
  • Fig. 8 eine Draufsicht auf einen Teilbereich des Befestigungselementes, wobei bei dieser Ausführung eine Verdrehsicherung durch die auf den Befestiger aufgesetzte Schraubenmutter erzielt werden soll.
Further features according to the invention and special advantages are explained in more detail in the following description with reference to the drawings. Show it:
  • 1 shows a section through a fixed substructure with an applied insulating sheet and a fastening element according to the invention;
  • Figure 2 shows a section through the tubular extension with inserted fastener, shown enlarged compared to Figure 1;
  • 3 shows the same representation as FIG. 2, but with the fastener projecting with its one end region further into the tubular extension;
  • Figures 4 and 5 in side view and top view of a particular embodiment of a nut which can be placed on the fastener;
  • Fig. 6 is an enlarged view of a fastener, as used in the embodiments of Figures 1 to 3.
  • 7 shows a section through a fastening element according to the invention;
  • Fig. 8 is a plan view of a portion of the fastener, with this embodiment to prevent rotation by the nut placed on the fastener.

In Fig. 1 ist ein Ausführungsbeispiel dargestellt, wie Isolierbahnen 1 auf einem festen Unterbau 2 befestigt werden. Es wird dazu ein Befestigungselement verwendet, welches eine grossflächige Unterlegscheibe 3 mit einem rohrförmigen Fortsatz 4 aufweist. Mittels eines Befestigers 5, der in den festen Unterbau 2 eingesetzt ist, wird über den rohrförmigen Fortsatz 4 die grossflächige Unterlegscheibe 3 an die Oberfläche 6 der Isolierbahn 1 angedrückt. Die Unterlegscheibe 3 und der rohrförmige Fortsatz 4 sind zweckmässig aus getrennten Teilen gefertigt und können daher auch aus verschiedenen Materialien gebildet sein. Allein schon aus Gründen der Vormagazinierung ist es zweckmässig, lediglich den Befestiger 5 und den rohrförmigen Fortsatz 4 gemeinsam zu magazinieren und die Unterlegscheibe 3 getrennt zu stapeln. Da der freie Endbereich des Befestigers 5 in den Innenraum des rohrförmigen Fortsatzes 4 hineinragt, ist eine teleskopartige Verschiebung zwischen dem rohrförmigen Fortsatz 4 und dem entsprechenden Endbereich des Befestigers 5 möglich, so dass Trittbelastungen auf die Unterlegscheibe 3 ohne Probleme abgefangen werden können.In Fig. 1 an embodiment is shown how insulating sheets 1 are attached to a solid base 2. For this purpose, a fastening element is used, which has a large-area washer 3 with a tubular extension 4. By means of a fastener 5, which is inserted into the fixed substructure 2, the large-area washer 3 is pressed against the surface 6 of the insulating sheet 1 via the tubular extension 4. The washer 3 and the tubular extension 4 are expediently made from separate parts and can therefore also be formed from different materials. For reasons of pre-storage alone, it is expedient to store only the fastener 5 and the tubular extension 4 together and to stack the washer 3 separately. Since the free end region of the fastener 5 projects into the interior of the tubular extension 4, there is a telescopic displacement between the tubular extension 4 and the corresponding end region of the fastener 5, so that tread loads on the washer 3 can be absorbed without problems.

Der Unterbau 2 in der Darstellung nach Fig. 1 besteht aus einer Betonplatte. In dieser Betonplatte werden Bohrungen 7 angebracht, in welche dann die Befestiger 5 mit ihren Enden 8 eingeschlagen werden. Bei dieser speziellen Ausführung des Befestigers 5 hat das Einschlagende 8 eine im wesentlichen glatte Oberfläche, jedoch wenigstens eine Ausbuchtung 9, wobei diese Ausbuchtung 9 eine ausreichende form- und kraftschlüssige Halterung im aus Beton gefertigten Unterbau 2 bietet. Durch einen Anschlagbund 10 ist gewährleistet, dass das Einschlagende 8 stets in der gleichen Tiefe in die Bohrung 7 eingeschlagen wird, was gerade bei einem relativ dünnwandigen Betonunterbau von besonderer Bedeutung ist. Durch eine solche Ausgestaltung kann Befestiger 5 also direkt in einen aus Beton gebildeten Unterbau 2 eingeschlagen werden.The substructure 2 in the illustration according to FIG. 1 consists of a concrete slab. Holes 7 are made in this concrete slab, into which the fasteners 5 are then driven with their ends 8. In this special embodiment of the fastener 5, the drive-in end 8 has an essentially smooth surface, but at least one bulge 9, this bulge 9 providing sufficient positive and non-positive retention in the substructure 2 made of concrete. A stop collar 10 ensures that the impact end 8 is always driven into the bore 7 at the same depth, which is particularly important in the case of a relatively thin-walled concrete substructure. With such a configuration, fastener 5 can thus be driven directly into a substructure 2 formed from concrete.

Die erfindungsgemässe Ausgestaltung des Befestigungselementes ist also überall dort von wesentlicher Bedeutung, wo nur eine bestimmte Einschraub- oder Einschlagtiefe des Befestigers möglich oder erwünscht ist, wobei im wesentlichen trotzdem immer die gleich langen Befestiger 5 eingesetzt werden können, da sie eben mehr oder weniger weit in den rohrförmigen Fortsatz 4 hineinragen können. Zur Verwirklichung dieser Aufgabe ist in den in den Innenraum 11 des rohrförmigen Fortsatzes 4 hineinragenden Endbereich 12 des Befestigers 5 ein den Befestiger 5 umgreifendes Verriegelungselement in Form einer Schraubenmutter aufdrehbar.The design of the fastening element according to the invention is therefore of essential importance wherever only a certain screw-in or drive-in depth of the fastener is possible or desired, although essentially the same length of fasteners 5 can always be used, since they are more or less far in can protrude the tubular extension 4. To achieve this object, a locking element in the form of a screw nut, which engages around the fastener 5, can be screwed into the end region 12 of the fastener 5 projecting into the interior 11 of the tubular extension 4.

Der in den rohrförmigen Fortsatz 4 hineinragende Endbereich 12 des Befestigers 5 ist mit einem Gewinde 13 versehen. Eine Schraubenmutter 14 ist durch den Innenraum 11 des rohrförmigen Fortsatzes 4 einführbar und kann auf den Endbereich 12 des Befestigers 5 aufgeschraubt werden.The end region 12 of the fastener 5 projecting into the tubular extension 4 is provided with a thread 13. A screw nut 14 can be inserted through the interior 11 of the tubular extension 4 and can be screwed onto the end region 12 of the fastener 5.

Aus Fig. 3 ist ersichtlich, dass ein spezielles Werkzeug 15 zum Anziehen der Schraubenmutter 14 vorgesehen werden kann, wobei dieses Werkzeug 15 einen entsprechenden Aufnahmeraum 16 für den überstehenden Bereich des Endbereiches 12 des Befestigers 5 aufweist. Bei dieser Ausführung der Schraubenmutter 14 als Sechskantschraube muss das Werkzeug die Seitenbereiche dieser Schraubenmutter 14 übergreifen können. Wenn hingegen eine Ausführung einer Schraubenmutter 14 verwendet wird, wie sie in den Fig. 4 und 5 dargestellt ist, kann entweder die Schraubenmutter 14 in grösserer Dicke ausgeführt werden oder aber der rohrförmige Fortsatz 4 schlanker konstruiert sein. Bei dieser Ausführung einer Schraubenmutter 14 nach den Fig. 4 und 5 sind achsparallel abstehende Angriffselemente 17 vorgesehen, an welchen ein entsprechendes Werkzeug zum Verdrehen dieser Schraubenmutter 14 angesetzt werden kann.It can be seen from FIG. 3 that a special tool 15 for tightening the screw nut 14 can be provided, this tool 15 having a corresponding receiving space 16 for the projecting area of the end area 12 of the fastener 5. With this version of the screw nut 14 as a hexagon screw, the tool must cover the side areas can overlap this nut 14. If, on the other hand, a version of a screw nut 14 is used, as is shown in FIGS. 4 and 5, either the screw nut 14 can be made thicker or the tubular extension 4 can be made slimmer. In this embodiment of a screw nut 14 according to FIGS. 4 and 5, axially parallel projecting engagement elements 17 are provided, on which a corresponding tool for turning this screw nut 14 can be attached.

In diesem Zusammenhang ist es auch vorteilhaft, wenn eine Verdrehsicherung für die Schraubenmutter 14 gegeben ist, und zwar so, dass die Schraubenmutter 14 verdrehsicher im rohrförmigen Fortsatz 4 gehalten wird. Es kann dies beispielsweise dadurch erreicht werden (siehe Fig. 7 und 8), dass eine vorzugsweise mehreckige Aussenbegrenzung der Schraubenmutter 14 annähernd dem Querschnitt des Innenraumes 11 des rohrförmigen Fortsatzes 4 entspricht. Beim Eindrehen der Schraubenmutter 14 wird dadurch der rohrförmige Fortsatz 4 mitgedreht, oder aber es kann der rohrförmige Fortsatz 4 mit einem entsprechenden Werkzeug, z.B. einem Sechskantschlüssel, gedreht werden, wobei sich dann eben die Schraubenmutter 14 durch die formschlüssige Verbindung mitdreht. Durch die relativ grosse Oberfläche des rohrförmigen Fortsatzes 4 hat dieser bereits gegenüber dem diesen umgebenden Isoliermaterial eine grosse Reibungsoberfläche, so dass eine gewisse Verdrehsicherheit gegeben ist. Es ist aber zweckmässig, den rohrförmigen Fortsatz 4 gegenüber der grossflächigen Unterlegscheibe 3 zusätzlich verdrehsicher zu arretieren, so dass eine sichere Lösehemmung für die Schraubenmutter 14 gegeben ist. Eine Ausführungsvariante ist in den Fig. 7 und 8 gezeigt. Es ist hier zur Aufnahme des Abschlussrandes 18 des rohrförmigen Fortsatzes 4 eine entsprechende Vertiefung in der Unterlegscheibe 3 vorgesehen, wobei die Form des Abschlussrandes 18 und der Vertiefung in der Unterlegscheibe 3 gleich ausgeführt sind. Bei der gezeigten Ausführung ist eine sechseckige Form gewählt worden. Es ist somit auch eine Verdrehsicherheit zwischen dem rohrförmigen Fortsatz 4 und der Unterlegscheibe 3 gewährleistet, so dass durch die grosse, dadurch entstandene Reibung mit Sicherheit ein Lösen der Schraubenmutter 14 verhindert werden kann. Im Rahmen der Erfindung ist es möglich, auch andere Konstruktionsmassnahmen einzusetzen, um eine Verdrehsicherung zwischen dem rohrförmigen Fortsatz 4 und der Unterlegscheibe 3 zu erzielen. So könnte beispielsweise der Abschlussrand 18 ellipsenförmig, dreieckig oder mehreckig ausgeführt oder mit Vorsprüngen ausgebildet werden, die dann in entsprechende Vertiefungen oder Ausnehmungen der Unterlegscheibe 3 eingreifen. Auch die Ausführung der rohrförmigen Hülse 4 kann in beliebigem Querschnitt gestaltet werden, und zwar jeweils in Anpassung an die Aussenkontur der Schraubenmutter 14, wobei die Schraubenmutter 14 natürlich nicht umfangsgeschlossen an der Innenwandung der rohrförmigen Hülse 4 anliegen muss, um die Verdrehsicherheit zu bewirken.In this context, it is also advantageous if the screw nut 14 is secured against rotation, in such a way that the screw nut 14 is held against rotation in the tubular extension 4. This can be achieved, for example, (see FIGS. 7 and 8) in that a preferably polygonal outer boundary of the screw nut 14 approximately corresponds to the cross section of the interior 11 of the tubular extension 4. When the screw nut 14 is screwed in, the tubular extension 4 is thereby also rotated, or else the tubular extension 4 can be rotated with an appropriate tool, for example a hexagon wrench, the screw nut 14 then also rotating with the positive connection. Due to the relatively large surface area of the tubular extension 4, this already has a large friction surface with respect to the insulating material surrounding it, so that there is a certain degree of security against rotation. However, it is expedient to additionally lock the tubular extension 4 so that it cannot rotate relative to the large-area washer 3, so that the screw nut 14 is reliably prevented from loosening. An embodiment variant is shown in FIGS. 7 and 8. A corresponding recess in the washer 3 is provided for receiving the end edge 18 of the tubular extension 4, the shape of the end edge 18 and the recess in the washer 3 being identical. In the embodiment shown, a hexagonal shape has been chosen. This also ensures a security against rotation between the tubular extension 4 and the washer 3, so that loosening of the screw nut 14 can be prevented with certainty due to the large friction resulting therefrom. Within the scope of the invention, it is possible to use other construction measures in order to prevent rotation between the tubular extension 4 and to achieve the washer 3. For example, the end edge 18 could be elliptical, triangular or polygonal or be formed with projections which then engage in corresponding recesses or recesses in the washer 3. The design of the tubular sleeve 4 can also be designed in any cross-section, in each case in adaptation to the outer contour of the screw nut 14, the screw nut 14 of course not having to lie circumferentially closed on the inner wall of the tubular sleeve 4 in order to provide security against rotation.

Durch die vorliegende Erfindung ist also die Möglichkeit geschaffen worden, bei der Befestigung von Isolierbahnen und/oder -platten auf einem festen Unterbau im wesentlichen überall gleich lange Befestiger einsetzen zu können, obwohl diese jeweils in einer konstanten Tiefe in den Unterbau 2 eingeschlagen werden. Durch die relativ einfachen konstruktiven Massnahmen ist also eine optimale Möglichkeit geschaffen worden, die sich insbesondere bei Schrägdächern, wo der von Isolierbahnen und/oder -platten gebildete Dämmstoff keilförmig ausläuft, bestens bewährt. Es ist also immer eine Einstellung von oben her, d.h. durch den rohrförmigen Fortsatz, möglich.The present invention thus creates the possibility of being able to use fasteners of essentially the same length everywhere when fastening insulating sheets and / or panels to a solid substructure, although these are each driven into the substructure 2 at a constant depth. The relatively simple structural measures have therefore created an optimal possibility which has proven itself particularly well in the case of pitched roofs, where the insulating material formed by insulating sheets and / or panels runs out in a wedge shape. So it is always an attitude from above, i.e. due to the tubular extension.

Claims (4)

  1. A fastening element for fixing insulation sheets and/or plates (1) on a fixed substructure (2), comprising a large area washer (3) and a tubular extension (4) for the passage through and guiding of a fastener (5) engaging in the fixed substructure, characterised in that one end region of the fastener (5) has one or more wave-like bulge(s) (9) and this end may be knocked into a prepared bore in the fixed substructure, in that the end region of the fastener (5) projecting into the tubular extension (4) is provided with a thread (13), and in that a screw nut (14) may be inserted into the interior (11) of the tubular extension (4) and may be screwed on to this end region (12) of the fastener (5).
  2. A fastening element according to claim 1, characterised in that the fastener (5) has a stop flange (10) adjoining the section (8) which is insertable into the fixed substructure.
  3. A fastening element according to claim 1, characterised in that a polygonal exterior limitation of the screw nut (14) approximately corresponds to the cross-section of the interior (11) of the tubular extension (4).
  4. A fastening element according to claims 1 to 3, characterised in that the screw nut (14) constituting the locking element is provided with axially parallel projecting attachment elements (17) for a tool.
EP90908198A 1989-06-09 1990-05-28 Fastening element for securing insulating strips and/or insulating boards to a solid substructure Expired - Lifetime EP0428664B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1428/89 1989-06-09
AT1428/89A AT392331B (en) 1989-06-09 1989-06-09 FASTENING ELEMENT FOR FIXING INSULATING SHEETS OR PANELS ON A FIXED BASE

Publications (2)

Publication Number Publication Date
EP0428664A1 EP0428664A1 (en) 1991-05-29
EP0428664B1 true EP0428664B1 (en) 1993-04-28

Family

ID=3513692

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90908198A Expired - Lifetime EP0428664B1 (en) 1989-06-09 1990-05-28 Fastening element for securing insulating strips and/or insulating boards to a solid substructure

Country Status (5)

Country Link
US (1) US5122022A (en)
EP (1) EP0428664B1 (en)
JP (1) JPH04500263A (en)
AT (2) AT392331B (en)
WO (1) WO1990015206A1 (en)

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AT392330B (en) * 1989-07-14 1991-03-11 Sfs Stadler Holding Ag FASTENING ELEMENT FOR FIXING INSULATING SHEETS OR PANELS ON A FIXED BASE
US5299897A (en) * 1992-07-22 1994-04-05 Great Lakes Tool And Machine Masonry fastener
DE9407231U1 (en) * 1994-04-30 1994-07-14 Magass Walter Fastening element for insulation and insulation material on flat roofs
US5607272A (en) * 1995-01-06 1997-03-04 Illinois Tool Works Inc. Attachment plate for insulation panels
US5707191A (en) * 1996-12-13 1998-01-13 Illinois Tool Works Inc. Stress plate with angled hole
US5908278A (en) * 1997-08-07 1999-06-01 Illinois Tool Works Inc. Stress plate with depending sleeve
DE19846204C2 (en) * 1998-10-07 2001-08-09 Sfs Ind Holding Ag Heerbrugg Fastening element and method for fastening insulation sheets or panels on a solid substructure, in particular in the roof area of buildings
US6471270B1 (en) 2001-08-03 2002-10-29 Paul M. Mituniewicz Insulation installing tool
US7140826B2 (en) 2002-10-30 2006-11-28 Powers Fasteners, Inc. Shaped anchor
EP1591602B1 (en) * 2004-04-28 2009-06-03 RANIT-Befestigungssysteme GmbH System for fastening components to a wall
CA2573067C (en) * 2004-07-19 2015-04-21 James Murtha Preset depth adapter and finger guard for screws and nails when installing sheetrock
US20060067805A1 (en) * 2004-09-29 2006-03-30 Reed Richard W Crimped nail
NL2004410C2 (en) * 2010-03-16 2011-09-20 Afast B V Device and method for fastening insulating material.
US10132356B2 (en) * 2017-02-22 2018-11-20 Mijo Radocaj Washer with step
FI127600B (en) * 2017-05-24 2018-10-15 Sk Tuote Oy Fastener and adjusting key and method of mounting a fastener

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Also Published As

Publication number Publication date
ATA142889A (en) 1990-08-15
WO1990015206A1 (en) 1990-12-13
AT392331B (en) 1991-03-11
EP0428664A1 (en) 1991-05-29
ATE88783T1 (en) 1993-05-15
JPH04500263A (en) 1992-01-16
US5122022A (en) 1992-06-16

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