DE19735280A1 - Method and appliance for fixing screw into base - Google Patents

Method and appliance for fixing screw into base

Info

Publication number
DE19735280A1
DE19735280A1 DE1997135280 DE19735280A DE19735280A1 DE 19735280 A1 DE19735280 A1 DE 19735280A1 DE 1997135280 DE1997135280 DE 1997135280 DE 19735280 A DE19735280 A DE 19735280A DE 19735280 A1 DE19735280 A1 DE 19735280A1
Authority
DE
Germany
Prior art keywords
thread
screw
base body
concrete
base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
DE1997135280
Other languages
German (de)
Inventor
Anton Gerhard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toge Duebel GmbH and Co KG
Original Assignee
Toge Duebel A Gerhard KG
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 Toge Duebel A Gerhard KG filed Critical Toge Duebel A Gerhard KG
Priority to DE1997135280 priority Critical patent/DE19735280A1/en
Publication of DE19735280A1 publication Critical patent/DE19735280A1/en
Ceased legal-status Critical Current

Links

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
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0052—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the ridge having indentations, notches or the like in order to improve the cutting behaviour
    • 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
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
    • F16B25/0026—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the material being a hard non-organic material, e.g. stone, concrete or drywall
    • 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
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0084—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by geometric details of the tip

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Dowels (AREA)

Abstract

The steel appliance resembling a thread cutter has a cylindrical basic body (1) and integral thread (2) with cutting notches around the external periphery of the thread. The flanks of the thread run radially parallel in relation to the center lengthwise axis. The surface line (4) defining the thread is conical near the front end (3).

Description

Die Erfindung richtet sich auf eine Vorrichtung und ein Verfahren zum Befestigen einer Schraube in einem Untergrund wie Beton oder derglei­ chen.The invention relates to an apparatus and a method for Fasten a screw in a surface such as concrete or the like chen.

Zur Befestigung von Schrauben in Beton oder dergleichen ist es bekannt, mittels eines Bohrers ein Loch vorzubohren, einen Dübel aus Metall oder Kunststoff einzusetzen und anschließend eine Schraube einzudrehen.For fastening screws in concrete or the like, it is known use a drill to pre-drill a hole, a metal dowel or Insert plastic and then screw in a screw.

Für viele Anwendungsfälle ist es möglich und vorteilhaft, in eine in den Beton eingebrachte Bohrung eine Schraube, die gegenüber der Bohrung ein Übermaß aufweist, direkt einzuschrauben, wobei sich die Schraube beim Einschrauben ihr Gewinde selbst schneidet. Eine derartige Schraube ist beispielsweise aus DE 297 04 226 U1 bekannt.For many applications, it is possible and advantageous to use one in the Concrete drill hole is a screw that is opposite the drill hole Has excess, screw in directly, the screw when Screwing in their threads themselves. Such a screw is known for example from DE 297 04 226 U1.

Derartige Schrauben, welche in der Lage sind, sich selbst ein Gewinde zu­ zuschneiden, müssen aus einem sehr hochwertigen Stahl bestehen und sind deshalb kostenaufwendig. Darüber hinaus ist es erforderlich, solche Schrauben entweder manuell mit vergleichsweise großem Kraftaufwand einzubringen oder während der gesamten Befestigungsphase einen Schrau­ ber zu verwenden.Such screws, which are able to thread themselves cut to size, must and are made of very high quality steel therefore expensive. In addition, there is a need for such Screws either manually with comparatively great effort to bring in or a screw during the entire fastening phase about to use.

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, unter Wah­ rung des Vorteils, auf Dübel verzichten zu können, eine Befestigung zu realisieren, bei der an das Material der Schraube keine hohe Festigkeitsan­ forderungen gestellt werden und wobei insbesondere für eine einfache Vormontage die Schraube zumindest anfänglich leicht eingedreht werden kann.Proceeding from this, the invention is based on the object, under wah the advantage of being able to do without dowels realize in which the material of the screw does not have a high strength  demands are made and in particular for a simple Pre-assembly the screw can be screwed in slightly at least initially can.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Vorrichtung nach Art eines Gewindeschneiders ausgebildet ist, umfassend einen im we­ sentlichen zylindrischen Grundkörper und ein einstückig mit dem Grund­ körper ausgebildetes Gewinde mit im Bereich des Außenumfangs des Ge­ windes angeordneten Schneidkerben.This object is achieved in that the device is designed in the manner of a tap, comprising one in the we substantial cylindrical body and one piece with the base body-formed thread with in the area of the outer circumference of the Ge windly arranged notches.

Es ist an sich in der Technik seit langem bekannt, z. B. für die Befestigung von Schrauben in Metall, zunächst mittels eines Gewindeschneiders ein Gewinde vorzuschneiden. Demgegenüber liegt der Erfindung die überra­ schende Erkenntnis zugrunde und wurde ein entsprechendes Vorurteil der Fachwelt überwunden, daß es nämlich auch bei Untergründen wie Beton möglich ist, mit einer gewindeschneiderartigen Vorrichtung nach Setzen einer Bohrung ein Gewinde einzuschneiden, wobei dann eine Schraube aus einem Material, welches beliebig ausgewählt sein kann, manuell leicht ein­ gedreht werden kann. Dementsprechend wird es möglich, einerseits für die Schraube ein weniger hochwertiges Material zu verwenden, und anderer­ seits durch das manuelle Einschrauben eine Art Vormontage zu realisieren. Insbesondere kann man losgelöst von Festigkeitsanforderungen an die Schraube die Materialwahl freier unter Berücksichtigung spezieller anwen­ dungsspezifischer Anforderungen, wie z. B. Korrosionsbeständigkeit oder dergleichen, auswählen.It has long been known per se in the art, e.g. B. for attachment of screws in metal, first using a tap Pre-cut thread. In contrast, the invention lies beyond underlying knowledge and became a corresponding prejudice of the Experts overcome that it is even with substrates such as concrete is possible with a tap-like device after setting Cut a thread in a hole, then remove a screw a material, which can be selected arbitrarily, easily can be rotated. Accordingly, it becomes possible, on the one hand, for the Screw a less high quality material to use, and others to do a kind of pre-assembly by manual screwing. In particular, one can detach from strength requirements on the Screw the choice of materials more freely considering special applications application-specific requirements, such as B. corrosion resistance or select the like.

Nachfolgend wird die Erfindung anhand eines bevorzugten Ausführungs­ beispiels in Verbindung mit der Zeichnung näher erläutert. Dabei zeigen: The invention is described below on the basis of a preferred embodiment example explained in connection with the drawing. Show:  

Fig. 1 eine Seitenansicht einer ersten Ausführungsform einer erfindungs­ gemäßen Vorrichtung, Fig. 1 is a side view of a first embodiment of a device according to the Invention,

Fig. 2 eine Aufsicht von der Stirnseite der Vorrichtung nach Fig. 1, Fig. 2 is a plan view of the front side of the apparatus of Fig. 1,

Fig. 3 eine vergrößerte Schnittdarstellung eines Gewindegangs, Fig. 3 is an enlarged sectional view of a thread,

Fig. 4 eine Fig. 1 entsprechende Seitenansicht einer zweiten Ausführungs­ form, Fig. 4 is a Fig. 1 corresponding side view of a second embodiment form,

Fig. 5 eine Fig. 2 entsprechende Ansicht von der Stirnseite der Ausfüh­ rungsform nach Fig. 4, Fig. 5 is a Fig. 2 corresponding view from the front side of the Implementing approximate shape of Fig. 4,

Fig. 6 eine Ansicht einer weiteren Ausführungsform des antriebsseitigen Endes der Vorrichtung und Fig. 6 is a view of another embodiment of the drive end of the device and

Fig. 7 eine Stirnansicht der Darstellung nach Fig. 6. Fig. 7 is an end view of the representation according to Fig. 6.

Eine in der Zeichnung dargestellte erfindungsgemäße Vorrichtung umfaßt einen zylinderförmigen Grundkörper 1 mit einem Gewinde 2, welches eine im Bereich des vorderen Endes 3 konisch verlaufende Mantelfläche 4 auf­ weist und ausgehend von einem Außendurchmesser bezogen auf den Grundkörper 1 von 0 auf den Soll-Außendurchmesser über etwa 1 ½ Ge­ windegänge ansteigt.A device according to the invention shown in the drawing comprises a cylindrical base body 1 with a thread 2 , which has a conical surface 4 in the region of the front end 3 and starting from an outer diameter based on the base body 1 from 0 to the desired outer diameter about 1½ threads increases.

Wie insbesondere aus Fig. 3 erkennbar ist, weist das Gewinde 2 zueinander parallele Flanken 5, 6 auf. As can be seen in particular from FIG. 3, the thread 2 has flanks 5 , 6 which are parallel to one another.

Das Gewinde 2 ist radial, wie aus Fig. 2 und 5 erkennbar, mit Schneidker­ ben 7a, 7b versehen, wobei gemäß der Ausführungsform nach Fig. 2 die Schneidkerben im wesentlichen die Form eines stumpfwinkligen Dreiecks aufweisen, während die Schneidkerben 7b bei der Ausführung nach Fig. 5 eine im wesentlichen radial verlaufende Flanke 8, einen im wesentlichen tangential verlaufenden Boden 9 und einen hiervon radial nach außen an­ steigenden Abschnitt 10 aufweisen.The thread 2 is radial, as can be seen from FIGS. 2 and 5, provided with cutting notches 7 a, 7 b, wherein according to the embodiment according to FIG. 2 the cutting notches have essentially the shape of an obtuse-angled triangle, while the cutting notches 7 b at the embodiment of FIG. 5 is a substantially radially extending edge 8, a substantially tangential bottom 9 and a radially therefrom having at rising portion 10 to the outside.

Bei der Ausführungsform nach Fig. 1 und 3 weist die Hinterseite des Grundkörpers 1 einen Sechskant-Schraubkopf 11 auf, während bei der Aus­ führungsform gemäß Fig. 6 ein Vielzahn-Schraubkopf 12 vorgesehen ist.In the embodiment according to FIGS. 1 and 3, the rear of the base body 1 has a hexagon screw head 11 , while in the embodiment according to FIG. 6 a multi-tooth screw head 12 is provided.

Claims (7)

1. Vorrichtung zum Befestigen einer Schraube in einem Untergrund wie Beton oder dergleichen, dadurch gekennzeichnet, daß die Vorrichtung nach Art eines Gewindeschneiders ausgebildet ist, umfassend einen im we­ sentlichen zylindrischen Grundkörper (1) und ein einstückig mit dem Grundkörper (1) ausgebildetes Gewinde (2) mit im Bereich des Außenum­ fangs des Gewindes (2) angeordneten Schneidkerben (7a, 7b).1. Device for fastening a screw in a base such as concrete or the like, characterized in that the device is designed in the manner of a thread cutter, comprising an essentially cylindrical base body ( 1 ) and an integral with the base body ( 1 ) formed thread ( 2 ) with in the area of the outer circumference of the thread ( 2 ) arranged notches ( 7 a, 7 b). 2. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß sie aus Stahl mit einer Härte < 60 HRC besteht.2. Device according to claim 2, characterized in that it consists of Steel with a hardness of <60 HRC. 3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Flan­ ken (5, 6) des Gewindes (2) radial zur Mittel-Längs-Achse (13) im wesent­ lichen parallel zueinander verlaufen.3. Apparatus according to claim 1, characterized in that the flan ken ( 5 , 6 ) of the thread ( 2 ) radially to the central longitudinal axis ( 13 ) in wesent union parallel to each other. 4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die das Gewinde (2) begrenzende Mantellinie (4) im Bereich des vorderen Endes wenigstens annähernd konisch ausgestaltet ist.4. The device according to claim 1, characterized in that the thread ( 2 ) delimiting surface line ( 4 ) is at least approximately conical in the region of the front end. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Au­ ßendurchmesser des Gewindes ausgehend von einer Höhe 0 bezogen auf den Grundkörper (1) innerhalb von ca. 1½ Gewindegängen auf den Soll- Außendurchmesser ansteigt.5. The device according to claim 4, characterized in that the outer diameter of the thread increases from a height of 0 based on the base body ( 1 ) within approximately 1½ turns to the desired outer diameter. 6. Verfahren zur Befestigung einer Schraube in einem Material wie Beton oder dergleichen, dadurch gekennzeichnet, daß eine im wesentlichen zy­ lindrische Bohrung erstellt wird, daß mit Hilfe einer Vorrichtung nach Art eines Gewindeschneiders ein Gewinde eingeschnitten, die Vorrichtung zum Gewindeschneiden entfernt und anschließend eine Schraube mit der glei­ chen Gewindesteigung wie die Vorrichtung zum Einbringen des Gewindes eingeschraubt wird.6. Method of fastening a screw in a material such as concrete or the like, characterized in that a substantially zy Lindrilling is created that with the help of a device according to Art  a thread is cut into a thread, the device for Thread cutting removed and then a screw with the same Chen thread pitch as the device for inserting the thread is screwed in. 7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß die Vor­ richtung zum Einbringen eines Gewindes mit Hilfe eines Schraubers oder Schlagschraubers angetrieben wird.7. The method according to claim 6, characterized in that the pre direction for inserting a thread using a screwdriver or Impact wrench is driven.
DE1997135280 1997-08-14 1997-08-14 Method and appliance for fixing screw into base Ceased DE19735280A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1997135280 DE19735280A1 (en) 1997-08-14 1997-08-14 Method and appliance for fixing screw into base

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1997135280 DE19735280A1 (en) 1997-08-14 1997-08-14 Method and appliance for fixing screw into base

Publications (1)

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DE19735280A1 true DE19735280A1 (en) 1999-02-18

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1188938A1 (en) * 2000-09-13 2002-03-20 TOGE-Dübel A. Gerhard KG Thread forming screw, especially a concrete screw
EP1270963A1 (en) * 2001-06-19 2003-01-02 Illinois Tool Works Inc. Fastner having multiple-bossed lead
DE10252774A1 (en) * 2002-11-07 2004-05-27 Adolf Würth GmbH & Co. KG Screw for hard materials such as concrete or masonry comprises a thread having cutting teeth alternately arranged to the left and the right of an imaginary central line on the side facing away from the head
AU2003200917B2 (en) * 2002-03-12 2005-03-17 Illinois Tool Works Inc. Fastener having multiple lobed thread
US7156600B2 (en) * 2001-06-19 2007-01-02 Illinois Tool Works Inc. Die for, method of making, and fastener with lobed primary thread lead and interposed dual auxiliary thread lead with improved substrate entry end portion
AU2004202640B2 (en) * 2002-03-12 2007-02-08 Illinois Tool Works Inc. Fastener having multiple lobed thread
EP3130811A1 (en) 2015-08-12 2017-02-15 HILTI Aktiengesellschaft Screw driving-in method
DE102020108589A1 (en) * 2019-08-08 2021-02-11 Ludwig Hettich Holding Gmbh & Co. Kg System for fastening an anchor in a mineral substrate

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1802560A (en) * 1923-04-04 1931-04-28 Arthur C Kerwin Masonry bolt
DE3538605A1 (en) * 1985-04-19 1986-10-23 Trw Inc., Cleveland, Ohio TAP DRILL
DE3718158A1 (en) * 1987-05-29 1988-12-15 Upat Max Langensiepen Kg Device for producing an undercut in a cylindrically predrilled hole and anchor rod for inserting in a drilled hole
DE3913299A1 (en) * 1989-04-22 1990-10-25 Itw Ateco Gmbh METHOD AND DEVICE FOR SHAPING A THREAD IN STONE OR CONCRETE
EP0433484A1 (en) * 1989-12-21 1991-06-26 LUDWIG HETTICH SCHRAUBENFABRIK GmbH &amp; Co. Thread forming screw
DE4206440A1 (en) * 1991-03-27 1992-10-01 Reisser Schraubenwerk Gmbh & C Self tapping screw with single or multiple pitched thread - has spaced apart steps along thread edge, extending to tip
DE29704226U1 (en) * 1996-07-29 1997-05-28 TOGE-Dübel A. Gerhard KG, 90431 Nürnberg Self-tapping screw, especially concrete screw

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1802560A (en) * 1923-04-04 1931-04-28 Arthur C Kerwin Masonry bolt
DE3538605A1 (en) * 1985-04-19 1986-10-23 Trw Inc., Cleveland, Ohio TAP DRILL
DE3718158A1 (en) * 1987-05-29 1988-12-15 Upat Max Langensiepen Kg Device for producing an undercut in a cylindrically predrilled hole and anchor rod for inserting in a drilled hole
DE3913299A1 (en) * 1989-04-22 1990-10-25 Itw Ateco Gmbh METHOD AND DEVICE FOR SHAPING A THREAD IN STONE OR CONCRETE
EP0433484A1 (en) * 1989-12-21 1991-06-26 LUDWIG HETTICH SCHRAUBENFABRIK GmbH &amp; Co. Thread forming screw
DE4206440A1 (en) * 1991-03-27 1992-10-01 Reisser Schraubenwerk Gmbh & C Self tapping screw with single or multiple pitched thread - has spaced apart steps along thread edge, extending to tip
DE29704226U1 (en) * 1996-07-29 1997-05-28 TOGE-Dübel A. Gerhard KG, 90431 Nürnberg Self-tapping screw, especially concrete screw

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1188938A1 (en) * 2000-09-13 2002-03-20 TOGE-Dübel A. Gerhard KG Thread forming screw, especially a concrete screw
US7101134B2 (en) 2001-06-19 2006-09-05 Illinois Tool Works Inc. Fastener having multiple lobed thread
EP1270963A1 (en) * 2001-06-19 2003-01-02 Illinois Tool Works Inc. Fastner having multiple-bossed lead
US7156600B2 (en) * 2001-06-19 2007-01-02 Illinois Tool Works Inc. Die for, method of making, and fastener with lobed primary thread lead and interposed dual auxiliary thread lead with improved substrate entry end portion
US6899500B2 (en) 2001-06-19 2005-05-31 Illinois Tool Works Inc. Fastner having multiple-bossed lead
US6956181B2 (en) 2001-06-19 2005-10-18 Illinois Tool Works, Inc. Method for making a fastener
AU2004202640B2 (en) * 2002-03-12 2007-02-08 Illinois Tool Works Inc. Fastener having multiple lobed thread
AU2003200917B2 (en) * 2002-03-12 2005-03-17 Illinois Tool Works Inc. Fastener having multiple lobed thread
AU2004202642B2 (en) * 2002-03-12 2007-04-26 Illinois Tool Works Inc. Fastener having multiple lobed thread
AU2004202640B9 (en) * 2002-03-12 2007-04-26 Illinois Tool Works Inc. Fastener having multiple lobed thread
DE10252774A1 (en) * 2002-11-07 2004-05-27 Adolf Würth GmbH & Co. KG Screw for hard materials such as concrete or masonry comprises a thread having cutting teeth alternately arranged to the left and the right of an imaginary central line on the side facing away from the head
EP3130811A1 (en) 2015-08-12 2017-02-15 HILTI Aktiengesellschaft Screw driving-in method
WO2017025318A1 (en) * 2015-08-12 2017-02-16 Hilti Aktiengesellschaft Method for setting a screw
CN107850102A (en) * 2015-08-12 2018-03-27 喜利得股份公司 Method for placing screw
CN107850102B (en) * 2015-08-12 2020-07-03 喜利得股份公司 Method for placing screws
US10935065B2 (en) 2015-08-12 2021-03-02 Hilti Aktiengesellschaft Method for setting a screw
DE102020108589A1 (en) * 2019-08-08 2021-02-11 Ludwig Hettich Holding Gmbh & Co. Kg System for fastening an anchor in a mineral substrate

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