WO1985004221A1 - Spread pin to be anchored into drilled holes of different diameters - Google Patents

Spread pin to be anchored into drilled holes of different diameters Download PDF

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Publication number
WO1985004221A1
WO1985004221A1 PCT/HU1985/000015 HU8500015W WO8504221A1 WO 1985004221 A1 WO1985004221 A1 WO 1985004221A1 HU 8500015 W HU8500015 W HU 8500015W WO 8504221 A1 WO8504221 A1 WO 8504221A1
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WO
WIPO (PCT)
Prior art keywords
sleeve
screw
borehole
expansion
dowel
Prior art date
Application number
PCT/HU1985/000015
Other languages
German (de)
French (fr)
Inventor
Péter GERO^"
Ferenc CSÁSZÁR
Original Assignee
Novotrade Rt.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Novotrade Rt. filed Critical Novotrade Rt.
Publication of WO1985004221A1 publication Critical patent/WO1985004221A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/02—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose in one piece with protrusions or ridges on the shaft

Definitions

  • the invention relates to an expansion anchor for anchoring in boreholes of any diameter, consisting of a sleeve lying against the borehole wall, which is provided with longitudinal slots over part of its length.
  • expansion anchors Numerous types of expansion anchors are known from everyday practice, which are used to fasten wood screws, threaded screws used in industry and in households in pre-drilled holes. These expansion anchors require a borehole, the diameter of which is three or is four times the screw diameter.
  • the expansion effect of the screw to be held begins to occur when the screw has been driven in at least up to half of the expansion anchor.
  • the expansion sleeve spread through the front end of the screw only touches the threads in a few points, although this contact makes a significant contribution to determining the holding values.
  • the screw does not touch the introduction part of the expansion anchor and the anchor only rests on the borehole wall with its rear expanded part. This fact affects the holding value of the conventional expansion plug in a strong till.
  • the depth and also the diameter of the drilled hole is of great importance.
  • the expansion plug is rotated by the driven screw, which expands the hole even more and prevents the screw from being driven in.
  • the expansion dowel disappears completely in a hole that is too deep, i.e. it is pushed back so far by the screw that only an extremely long screw can work together or a new hole should be drilled that is neither technically nor aesthetically advantageous.
  • the expansion anchor should be hammered into the hole, causing the anchor to be broken, bent or crushed, or the insertion part of the anchor protrudes from the hole to such an extent that it strengthens the anchor securing part must be cut off.
  • conventional expansion anchors it sometimes happens that the driven screw leaves the dowel in a lateral direction immediately behind the insertion part, so that the sleeve of the dowel, which is slit open in the longitudinal direction, is not expanded, which means that there is no contact force between the expansion sleeve and the borehole wall.
  • the holding value of such an expansion plug is zero.
  • the longitudinal slots do not extend to the rear end of the anchor and a dog nut is fastened in the rear sleeve end.
  • a threaded screw is inserted over the thing to be fastened into the dowel and screwed into the round nut.
  • the round nut compresses the dowel in the longitudinal direction, the slotted middle part is pressed against the borehole wall.
  • the disadvantage is that the round nut can be ejected from the sleeve or that the dowel material that is too soft cannot hold the round nut in place.
  • the invention is therefore an object of the invention to provide a fastener element which, while eliminating the abovementioned shortcomings, ensures uniform contact between the driven screw and the sleeve or between the sleeve and the borehole wall along the entire length of the dowel with different or uneven hole diameters, thereby ensuring a higher holding value with a smaller dowel or hole diameter, the depth of the drilled hole puncturing the Dowels not badly affected.
  • the sleeve has a star-shaped through opening and a smooth outer jacket which is cut along a helix along its entire length.
  • the solution according to the invention results in a better contact between the sleeve and the borehole wall along the expansion dowel, which enables complete filling of the borehole and thus high holding values.
  • the star-shaped through opening provides secure guidance for the screw and a suitable internal thread for the respective screw.
  • the drilling depth is of no interest, since the dowel tube, which is expediently produced by extrusion, can be cut to size after insertion into the hole.
  • the diameter of the pre-drilled hole can be reduced by almost half when using the expansion anchor according to the invention compared to a conventional anchor.
  • ribs made of the material of the expansion anchor are formed on its outer jacket transversely to the longitudinal axis of the anchor over a part of the circumference or over the entire circumference, which increase the holding value of the anchor by an increased frictional force.
  • FIG. 2 shows a section through the fastening element from FIG. 1 along the line II-II
  • Figure 3 shows the fastener inserted into a borehole with a partially driven wood screw.
  • the expansion anchor according to Figure 1 consists of a sleeve 1, which is made of plastic, for example from semi-hard polyethylene by extrusion.
  • the expansion anchor can be cut up to a predetermined length or produced as a longer expansion anchor tube with a length of 40-60 cm.
  • the outer jacket of the sleeve 1 is cut along its entire length along a helix 2 according to the figure.
  • the helical line 2 is also designed to be right-handed for standardized, ie for right-handed screws.
  • a pitch angle ⁇ of the helical line 2 can be selected in the range from 5 to 60 ° depending on the dowel diameter. This pitch angle ⁇ , which has an average value of 30, also determines the thread pitch of the helical line 2. According to FIG.
  • the sleeve 1 has a star-shaped central through opening 3, which in the embodiment shown has the shape of a hexagram. From the figure it can be seen that the screw line 2 cuts through the relatively thin wall of the sleeve 1 compared to a conventional expansion dowel.
  • Figure 3 shows an expansion dowel, which is used for anchoring in a borehole 4 in a masonry 5 and adapted to the depth of the borehole 4 by cutting off the protruding part.
  • the expansion anchor is inserted into the borehole 4 in such a way that the one with the right-handed screw benlinde 2 provided and is screwed along the cut sleeve 1 counterclockwise into the hole 4.
  • the "threads” move along the helical line 2, as a result of which the diameter of the sleeve 1 is reduced and the sleeve 1 can easily be screwed into the borehole 4.
  • the diameter of the borehole 4 or the uniformity of the hole diameter is irrelevant, since the elastic sleeve 1 regains its original shape after being released. In this state, the sleeve 1 is only partially against the wall of the borehole 4.
  • the element to be fastened in this case a screw 6, is screwed into the expansion dowel.
  • the penetrating threads of the screw 6 attempt to bring along the inner edges of the star-shaped through opening 3 in the direction of rotation due to the resulting frictional force.
  • the parts of the sleeve 1 separated along the helix 2, that is to say the “threads” of the sleeve 1 are displaced in one direction, as a result of which the.
  • Diameter of the sleeve. 1 increases and the sleeve 1 is pressed over its entire surface against the wall of the borehole 4.
  • the screw threads then deform the inner edges of the star-shaped through opening 3 and form an internal thread therein. This ensures that the fully screwed screw 6 is evenly stuck in the sleeve 1 in the entire contact area.
  • the retention value of the anchoring depends on the diameter of the screw 6, the borehole 4 and the shape of the inner through opening 3, and experience has shown that it is higher than the retention value of a conventional anchor of the same dimensions.
  • ribs can be formed transversely to the longitudinal axis of the material of the dowel that extends on its outer jacket over part of the circumference or over the full circumference, which ribs in certain types of masonry increased frictional force and thus a higher holding value.
  • two screw lines 2 can be attached to the sleeve 1 of the expansion anchor like a two-start thread or elastic metals can be used as the raw material of the anchor instead of plastic.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dowels (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

The spread pin is comprised of a sleeve (1) arranged against the wall of the drilled hole (4) and comprising an inner star-like traversing opening (3) and a smooth or fluted outer envelope which is longitudinally cut throughout a helical line (2). The thus formed threads of the sleeve (1) are displaced upon inserting a screw (6) into the traversing opening (3), the sleeve (1) arranged into the drilled hole (4) of a masonry work (5) being regularly compressed throughout its surface against the wall of the drilled hole.

Description

Titel der Erfindung Title of the invention
Spreizdübel für die Verankerung in Bohrlöchern beliebiger DurchmesserExpansion dowels for anchoring in drill holes of any diameter
Technisches GebietTechnical field
Die Erfindung bezieht sich auf einen Spreizdübel für die Verankerung in Bohrlöchern beliebiger Durchmesser, bestehend aus einer an der Bohrlochwand anliegenden Hülse, die über einen Teil ihrer Länge mit Längsschlitzen versehen ist. Stand der TechnikThe invention relates to an expansion anchor for anchoring in boreholes of any diameter, consisting of a sleeve lying against the borehole wall, which is provided with longitudinal slots over part of its length. State of the art
Es sind aus der alltäglichen Praxis zahlreiche Arten von Spreizdübeln bekannt, die dazu dienen, in der Industrie und den Haushalten verwendete Holzschrauben, Gewindeschrauben in vorgebohrten Löchern zu befestigen. Diese Spreizdübel erfordern ein Bohrloch, dessen Durchmesser das Dreibzw. das Vierfache des Schraubendurchmessers beträgt. Die Spreizwirkung der festzuhaltenden Schraube beginnt aufzutreten, wenn die Schraube mindestens bis zur Hälfte des Spreizdübels eingetrieben ist. Die durch das v ordringe nde Ende der Schraube aufgespreizte Spreizhülse berührt die Gewinden nur in wenigen Punkten, obwohl dieser Kontakt zur Bestimmung der Haltewerte bedeutend beiträgt. Bei entsprechender Paarung berührt die Schraube den Einleitungsteil des Spreizdübels nicht und der Dübel liegt nur mit seinem hinteren gespreizten Teil an der Bohrlochwand an. Diese Tatsache beeinträchtigt den Haltewert des herkömmlichen Spreizdübels in starkem Kasse.Numerous types of expansion anchors are known from everyday practice, which are used to fasten wood screws, threaded screws used in industry and in households in pre-drilled holes. These expansion anchors require a borehole, the diameter of which is three or is four times the screw diameter. The expansion effect of the screw to be held begins to occur when the screw has been driven in at least up to half of the expansion anchor. The expansion sleeve spread through the front end of the screw only touches the threads in a few points, although this contact makes a significant contribution to determining the holding values. When paired appropriately, the screw does not touch the introduction part of the expansion anchor and the anchor only rests on the borehole wall with its rear expanded part. This fact affects the holding value of the conventional expansion plug in a strong till.
Bei den bekannten Spreizdübeln kann als nachteilig betrachtet werden, dass die Tiefe und auch der Durchmesser des gebohrten Loches von grosser Bedeutung ist. In einem Bohrloch mit zu grossem Durchmesser wird der Spreizdübel durch die eingetriebene Schraube verdreht, wodurch das Loch noch mehr erweitert und das Eintreiben der Schraube verhindert wird. In einem zu tiefen Bohrloch verschwindet der Spreizdübel vollkommen, das heisst der wird durch die Schraube so weit hintergeschoben, dass nur mit einer extrem langen Schraube zusammenwirken kann oder es soll ein neues Loch gebohrt werden, das weder technisch noch ästhetisch vorteilhaft vorkommt.With the known expansion anchors it can be considered disadvantageous that the depth and also the diameter of the drilled hole is of great importance. In a borehole with too large a diameter, the expansion plug is rotated by the driven screw, which expands the hole even more and prevents the screw from being driven in. The expansion dowel disappears completely in a hole that is too deep, i.e. it is pushed back so far by the screw that only an extremely long screw can work together or a new hole should be drilled that is neither technically nor aesthetically advantageous.
Wenn das Loch zu kurz oder mit einem zu kleinen Durchmesser gebohrt wird, der Spreizdübel soll ins Loch eingehämmert werden, wodurch der Dübel zerbrochen, verbogen oder zerquetscht wird, oder der Einführungsteil des Dübels aus dem Loch so weit herausragt, dass dieser die Festigkeit des Dübels sichernde Teil abgeschnitten werden muss. Bei den herkömmlichen Spreizdübeln kommt es manchmal vor, dass die eingetriebene Schraube den Dübel in seitlicher Richtung gleich hinter dem Einführungsteil verlässt, so dass die in Längsrichtung aufgeschlitzte Hülse des Dübels nicht aufgespreizt wird, wodurch keine .Anpresskraft zwischen der Spreizhülse und der Bohrlochwand entsteht. Der Haltewert eines solchen Spreizdübels ist gleich Null. Bei einem anderen bekannten Typ von Spreizdübeln erstrecken die Längsschlitzen nicht bis dem hinteren Ende ces Dübels und eine Hundmutter ist im hinteren Hülsenende befestigt. Hachden der Dübel 'in das Bohrloch eingesetzt ist, wird eine Gewindeschraube über das zu befestigende Ding in den Dübel gesteckt und in die Rundmutter eingeschraubt. Die Rundmutter drückt durch ihre Bewegung den Dübel in Längsrichtung zusammen, dessen aufgeschlitzter Mittelteil gegen die Bohrlochwand gepresst wird. Bei dieser Ausführungsform wirkt nachteilig, dass die Rundmutter aus der Hülse ausgestossen werden kann, oder das zu weiche Material des Dübels die Rundmutter in ihrer Lage nicht festhalten kann.If the hole is drilled too short or with a diameter that is too small, the expansion anchor should be hammered into the hole, causing the anchor to be broken, bent or crushed, or the insertion part of the anchor protrudes from the hole to such an extent that it strengthens the anchor securing part must be cut off. With conventional expansion anchors, it sometimes happens that the driven screw leaves the dowel in a lateral direction immediately behind the insertion part, so that the sleeve of the dowel, which is slit open in the longitudinal direction, is not expanded, which means that there is no contact force between the expansion sleeve and the borehole wall. The holding value of such an expansion plug is zero. In another known type of expansion anchor, the longitudinal slots do not extend to the rear end of the anchor and a dog nut is fastened in the rear sleeve end. After the dowel has been inserted into the borehole, a threaded screw is inserted over the thing to be fastened into the dowel and screwed into the round nut. By moving the round nut compresses the dowel in the longitudinal direction, the slotted middle part is pressed against the borehole wall. In this embodiment, the disadvantage is that the round nut can be ejected from the sleeve or that the dowel material that is too soft cannot hold the round nut in place.
Das Wesen der ErfindungThe essence of the invention
Der Erfindung liegt daher die Aufgabe zugrunde , ein Befestigungse lement zu schaffen, das bei gleichzeitiger Beseitigung der obenerwähnten Mängel einen gleichmässigen Kontakt zwischen der eingetriebenen Schraube und der Hülse bzw. zwischen der Hülse und der Bohrlochwand entlang der ganzen Länge des Dübels bei verschiedenen oder ungleichmässigen Lochdurchmessern gewährleistet, dadurch einen höheren Haltewert bei kleinerem Dübel- bzw. Lochdurchmesser sichert, wobei die Tiefe des gebohrten Loches die Punktion des Dübels keine swegs beeinträchtigt.The invention is therefore an object of the invention to provide a fastener element which, while eliminating the abovementioned shortcomings, ensures uniform contact between the driven screw and the sleeve or between the sleeve and the borehole wall along the entire length of the dowel with different or uneven hole diameters, thereby ensuring a higher holding value with a smaller dowel or hole diameter, the depth of the drilled hole puncturing the Dowels not badly affected.
Erfindungsgemäss wird dies dadurch erreicht, dass die Hülse eine sternförmige Durchgangsöffnung und einen glatten Aussenmantel hat, der in seiner Gesamtlänge eine Schraubenlinie entlang aufgeschnitten ist.According to the invention, this is achieved in that the sleeve has a star-shaped through opening and a smooth outer jacket which is cut along a helix along its entire length.
Durch die erf indungsgemässe Lösung ergibt sich längs des Spreizdübels ein besserer Kontakt zwischen der Hülse und der Bohrlochwand, die eine vollständige Ausfüllung des Bohrloches und damit hohe Haltewerte ermöglicht. Die sternförmige Durchgangsöffnung ergibt eine sichere Führung für die Schraube und ein passendes Innengewinde für die jeweilige Schraube. Die Bohrungstiefe ist uninteressant, da der zweckmässig durch Strangpressen erzeugte Dübelrohr nach dem Einsetzen in das Loch massgeschnitten werden kann. Der Durchmesser des vorgebohrten Loches kann bei der Anwendung des erfindungsgemässen Spreizdübels im Vergleich zu einem herkömmlichen Dübel annähernd auf die Hälfte vermindert werden.The solution according to the invention results in a better contact between the sleeve and the borehole wall along the expansion dowel, which enables complete filling of the borehole and thus high holding values. The star-shaped through opening provides secure guidance for the screw and a suitable internal thread for the respective screw. The drilling depth is of no interest, since the dowel tube, which is expediently produced by extrusion, can be cut to size after insertion into the hole. The diameter of the pre-drilled hole can be reduced by almost half when using the expansion anchor according to the invention compared to a conventional anchor.
Nach einem bevorzugten Ausführungsbeispiel des erfindungsgemässen Spreizdübels sind an seinem Aussenmantel quer zu der Längsachse des Dübels über einen Teil des Umfangs oder am vollen Umfang erstreckende Rippen aus dem Material des Spreizdübels ausgebildet, die den Haltewert des Dübels durch eine gesteigerte Reibungskraft erhöhen.According to a preferred embodiment of the expansion anchor according to the invention, ribs made of the material of the expansion anchor are formed on its outer jacket transversely to the longitudinal axis of the anchor over a part of the circumference or over the entire circumference, which increase the holding value of the anchor by an increased frictional force.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Die Erfindung wird nachstehend anhand der lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Es zeigen: Figur 1 ein von einem Spreizdübelrohr abgeschnittenes BefestigungselementThe invention is explained in more detail below with reference to the drawing, which merely shows an exemplary embodiment. Show it: 1 shows a fastening element cut off from an expansion dowel tube
Figur 2 einen Schnitt durch das Befestigungselement aus der Figur 1 entlang der Linie II - IIFIG. 2 shows a section through the fastening element from FIG. 1 along the line II-II
Figur 3 das in ein Bohrloch eingesetzte Befestigungselement mit einer zum Teil eingetriebenen Holzschraube.Figure 3 shows the fastener inserted into a borehole with a partially driven wood screw.
Beschreibung eines bevorzugten AusführungsbeispielsDescription of a preferred embodiment
Der Spreizdübel nach Figur 1 besteht aus einer Hülse 1, die aus Kunststoff, zum Beispiel aus halbhartem Polyäthylen durch Strangpressen hergestellt ist. Der Spreizdübel kann auf vorbestimmte Länge zerstückelt werden oder als längeres Spreizdübelrohr mit einer Länge von 40 - 60 cm erzeugt werden. Der Aussenmantel der Hülse 1 ist gemäss der Figur in seiner Gesamtlänge eine Schraubenlinie 2 entlang aufgeschnitten. Die Schraubenlinie 2 ist für genormte, also für rechtsgängigen Schrauben gleichfalls rechtsgängig ausgestaltet. Ein Steigungswinkel α der Schraubenlinie 2 kann im Bereich von 5 bis 60° abhängig von dem Dübeldurchmesser gewählt werden. Dieser Steigungswinkel α, der durchschnittlich einen Wert von 30 aufweist, bestimmt auch die Gewindesteigung der Schraubenlinie 2. Gemäss Figur 2 hat die Hülse 1 eine sternförmigezentrische Durchgangsöffnung 3, die in der dargestellten Ausführungsform die Form eines Hexagrammes aufweist. Aus der Figur ist ersichtlich, dass die Schraubenlinie 2 die mit einem herkömmlichen Spreizdübel verglichen relativ dünne Wandung der Hülse 1 durchschneidet.The expansion anchor according to Figure 1 consists of a sleeve 1, which is made of plastic, for example from semi-hard polyethylene by extrusion. The expansion anchor can be cut up to a predetermined length or produced as a longer expansion anchor tube with a length of 40-60 cm. The outer jacket of the sleeve 1 is cut along its entire length along a helix 2 according to the figure. The helical line 2 is also designed to be right-handed for standardized, ie for right-handed screws. A pitch angle α of the helical line 2 can be selected in the range from 5 to 60 ° depending on the dowel diameter. This pitch angle α, which has an average value of 30, also determines the thread pitch of the helical line 2. According to FIG. 2, the sleeve 1 has a star-shaped central through opening 3, which in the embodiment shown has the shape of a hexagram. From the figure it can be seen that the screw line 2 cuts through the relatively thin wall of the sleeve 1 compared to a conventional expansion dowel.
Figur 3 zeigt einen Spreizdübel, der für die Verankerung in ein Bohrloch 4 in einem Mauerwerk 5 eingesetzt und an die Tiefe des Bohrloches 4 durch Abschneiden des herausragenden Teiles angepasst ist. Der Spreizdübel wird in das Bohrloch 4 derart eingesetzt, dass die mit der rechtsgängigen Schrau benlinde 2 versehene und entlang deren aufgeschnittene Hülse 1 gegen den Uhrzeigersinn ins Bohrloch 4 eingedreht wird. Infolge der Drehung verschieben sich die "Gewinden" entlang der Schraubenlinie 2, wodurch der Durchmesser der Hülse 1 sich vermindert und die Hülse 1 in das Bohrloch 4 leicht eingedreht werden kann. Dabei spielt der Durchmesser des Bohrloches 4 oder die Gleichmässigkeit des Lochdurchmessers keine Rolle, da die elastische Hülse 1 ihre ursprüngliche Form nach dem Loslassen wiedergewinnt. In diesem Zustand liegt die Hülse 1 nur teilweise an der Wand des Bohrloches 4 an.Figure 3 shows an expansion dowel, which is used for anchoring in a borehole 4 in a masonry 5 and adapted to the depth of the borehole 4 by cutting off the protruding part. The expansion anchor is inserted into the borehole 4 in such a way that the one with the right-handed screw benlinde 2 provided and is screwed along the cut sleeve 1 counterclockwise into the hole 4. As a result of the rotation, the "threads" move along the helical line 2, as a result of which the diameter of the sleeve 1 is reduced and the sleeve 1 can easily be screwed into the borehole 4. The diameter of the borehole 4 or the uniformity of the hole diameter is irrelevant, since the elastic sleeve 1 regains its original shape after being released. In this state, the sleeve 1 is only partially against the wall of the borehole 4.
Das zu befestigende Element, in diesem Fall eine Schraube 6 wird in den Spreizdübel geschraubt. Die eindringenden Gewinden der Schraube 6 versuchen durch die entstehende Reibungskraft die inneren Kanten der sternförmigen Durchgangsöffnung 3 in die Drehrichtung zu verdrehen, mitzubringen. Infolge dieser Drehkraft werden die entlang der Schraubenlinie 2 getrennten Teile der Hülse 1, also die "Gewinden" der Hülse 1 in einer Richtung gegeneinander verschoben, wodurch der. Durchmesser der Hülse. 1 zunimmt und die Hülse 1 über ihre gesamte Fläche an die Wand des Bohrloches 4 gepresst wird. Die Schraubengewinden verformen dann die inneren Kanten der sternförmigen DurchgangsÖffnung 3 und bilden darin ein Innengewinde aus. Dadurch wird erreicht, dass die voll eingedrehte Schraube 6 im ganzen Kontaktbereich in der Hülse 1 gleichmässig festsitzt.The element to be fastened, in this case a screw 6, is screwed into the expansion dowel. The penetrating threads of the screw 6 attempt to bring along the inner edges of the star-shaped through opening 3 in the direction of rotation due to the resulting frictional force. As a result of this torque, the parts of the sleeve 1 separated along the helix 2, that is to say the “threads” of the sleeve 1, are displaced in one direction, as a result of which the. Diameter of the sleeve. 1 increases and the sleeve 1 is pressed over its entire surface against the wall of the borehole 4. The screw threads then deform the inner edges of the star-shaped through opening 3 and form an internal thread therein. This ensures that the fully screwed screw 6 is evenly stuck in the sleeve 1 in the entire contact area.
Der Haltewert der Verankerung hängt von dem Durchmesser der Schraube 6, des Bohrloches 4 und von der Form der inneren Durchgangsöffnung 3 ab und ist erfahrungsgemäss höher als der Haltewert eines herkömmlichen Dübels gleicher Abmessungen.The retention value of the anchoring depends on the diameter of the screw 6, the borehole 4 and the shape of the inner through opening 3, and experience has shown that it is higher than the retention value of a conventional anchor of the same dimensions.
Gemäss weiteren Ausführungsformen des erfindungsgemässen Spreizdübels können quer zur Längsachse dessen an seinem Aussenmantel über einen Teil des Umfangs oder am vollen Umfang erstreckende Rippen aus dem Material des Dübels ausgebildet werden, die in bestimfαten Typen von Mauerwerken eine gesteigerte Reibungskraft und dadurch einen höheren Haltewert ergeben.According to further embodiments of the expansion dowel according to the invention, ribs can be formed transversely to the longitudinal axis of the material of the dowel that extends on its outer jacket over part of the circumference or over the full circumference, which ribs in certain types of masonry increased frictional force and thus a higher holding value.
Unter gewissen Bedingungen können zwei Schraubenlinien 2 wie ein zweigängiges Gewinde an der Hülse 1 des Spreizdübels angebracht werden oder statt Kunststoff elastische Metalle als Ausgangsmaterial des Dübels verwendet werden. Under certain conditions, two screw lines 2 can be attached to the sleeve 1 of the expansion anchor like a two-start thread or elastic metals can be used as the raw material of the anchor instead of plastic.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Spreizdübel für die Verankerung in Bohrlöchern beliebiger Durchmesser, bestehend aus einer an der Bohrlochwand anliegenden Hülse, die über einen Teil ihrer1. Expansion dowels for anchoring in boreholes of any diameter, consisting of a sleeve lying against the borehole wall, which over part of their
Länge mit Längsschlitzen versehen ist, dadurch gekennzeichnet, dass die Hülse /1/ eine sternförmige Durchgangsöffnung /3/ und einen glatten Aussenmantel hat, der in seiner Gesamtlänge eine Schraubenlinie /2/ entlang aufgeschnitten ist, wobei die entlang der Schraubenlinie /2/ getrennten Teile der Hülse /1/ durch das Eindrehen einer Schraube /6/ in die Durchgangs Öffnung /3/ der vorher in ein Bohrloch /4/ eines Mauerwerkes /5/ eingesetzten Hülse /1/ sich aneinander verschieben, dass die Hülse /1/ über ihre ganze Fläche an dieLength is provided with longitudinal slots, characterized in that the sleeve / 1 / has a star-shaped through opening / 3 / and a smooth outer jacket which is cut along its entire length along a screw line / 2 /, the parts separated along the screw line / 2 / the sleeve / 1 / by screwing in a screw / 6 / into the through opening / 3 / the sleeve previously inserted into a borehole / 4 / masonry / 5 / sleeve / 1 / that the sleeve / 1 / over its whole area to the
Wand des Bohrloches /4/ gleichmässig angepresst ist.Wall of the borehole / 4 / is pressed evenly.
2. Spreizdübel nach Anspruch 1, dadurch gekennzeichnet, dass an dem Aussenmantel quer zu der Längsachse des Dübels über einen Teil des Umfangs oder am vollen2. Expansible plug according to claim 1, characterized in that on the outer jacket transversely to the longitudinal axis of the plug over part of the circumference or on the full
Umfang erstreckende Rippen aus dem Material des Dübels ausgebildet sind.Ribs extending circumferentially are formed from the material of the dowel.
3. Spreizdübel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Aussenmantel der Hülse /1/ entlang zwei wie ein zweigängiges Gewinde angebrachten Schraubenlinien /2/ aufgeschnitten ist. 3. Expansible plug according to claim 1 or 2, characterized in that the outer jacket of the sleeve / 1 / is cut along two screw lines / 2 / attached like a two-start thread.
PCT/HU1985/000015 1984-03-16 1985-03-06 Spread pin to be anchored into drilled holes of different diameters WO1985004221A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU103584 1984-03-16
HU1035/84 1984-03-16

Publications (1)

Publication Number Publication Date
WO1985004221A1 true WO1985004221A1 (en) 1985-09-26

Family

ID=10952559

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/HU1985/000015 WO1985004221A1 (en) 1984-03-16 1985-03-06 Spread pin to be anchored into drilled holes of different diameters

Country Status (3)

Country Link
EP (1) EP0176545A1 (en)
JP (1) JPS61501652A (en)
WO (1) WO1985004221A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4892429A (en) * 1987-08-03 1990-01-09 Giannuzzi Louis Roof anchor and stress plate assembly
EP0506550A1 (en) * 1991-03-28 1992-09-30 Claire Fabre-Houviez Fastening plug

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2108737A1 (en) * 1970-02-26 1971-12-02 Bryce Smith Derek Fastening device and method for their manufacture
AT296576B (en) * 1969-06-09 1972-02-25 Heinrich Zenhauesern Fastening device
DE2251109A1 (en) * 1971-10-22 1973-05-10 Arbman Dev Ab EXPANSION PLUG FOR ANCHORING A SCREW IN A HOLE IN MASONRY, CONCRETE OR STONE AND METHOD AND TOOL FOR MAKING A PLUG
AT308357B (en) * 1969-05-30 1973-07-10 Aackersberg Mortensen Expandable fastening or anchoring device and method for their manufacture
DE2656301A1 (en) * 1976-12-11 1978-06-15 Bayer Ag COIL DOWEL
DE3017108A1 (en) * 1980-05-03 1981-11-12 Brauckmann & Pröbsting, 5880 Lüdenscheid Screw dowel for brittle walls - which has screw actuated spread anchors moving from inner to outer position
EP0072400A1 (en) * 1981-08-17 1983-02-23 Fischerwerke Arthur Fischer GmbH & Co. KG Expanding dowel

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT308357B (en) * 1969-05-30 1973-07-10 Aackersberg Mortensen Expandable fastening or anchoring device and method for their manufacture
AT296576B (en) * 1969-06-09 1972-02-25 Heinrich Zenhauesern Fastening device
DE2108737A1 (en) * 1970-02-26 1971-12-02 Bryce Smith Derek Fastening device and method for their manufacture
DE2251109A1 (en) * 1971-10-22 1973-05-10 Arbman Dev Ab EXPANSION PLUG FOR ANCHORING A SCREW IN A HOLE IN MASONRY, CONCRETE OR STONE AND METHOD AND TOOL FOR MAKING A PLUG
DE2656301A1 (en) * 1976-12-11 1978-06-15 Bayer Ag COIL DOWEL
DE3017108A1 (en) * 1980-05-03 1981-11-12 Brauckmann & Pröbsting, 5880 Lüdenscheid Screw dowel for brittle walls - which has screw actuated spread anchors moving from inner to outer position
EP0072400A1 (en) * 1981-08-17 1983-02-23 Fischerwerke Arthur Fischer GmbH & Co. KG Expanding dowel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4892429A (en) * 1987-08-03 1990-01-09 Giannuzzi Louis Roof anchor and stress plate assembly
EP0506550A1 (en) * 1991-03-28 1992-09-30 Claire Fabre-Houviez Fastening plug
FR2674582A1 (en) * 1991-03-28 1992-10-02 Houviez Claire Fabre ANCHORING ANKLE.

Also Published As

Publication number Publication date
JPS61501652A (en) 1986-08-07
EP0176545A1 (en) 1986-04-09

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