DE10311471A1 - Thread forming screw for use on foundation formed of hard construction materials e.g. concrete, has each thread root having conical shape that enlarges in diameter towards each thread flank of threaded portion along screwing direction - Google Patents
Thread forming screw for use on foundation formed of hard construction materials e.g. concrete, has each thread root having conical shape that enlarges in diameter towards each thread flank of threaded portion along screwing direction Download PDFInfo
- Publication number
- DE10311471A1 DE10311471A1 DE10311471A DE10311471A DE10311471A1 DE 10311471 A1 DE10311471 A1 DE 10311471A1 DE 10311471 A DE10311471 A DE 10311471A DE 10311471 A DE10311471 A DE 10311471A DE 10311471 A1 DE10311471 A1 DE 10311471A1
- Authority
- DE
- Germany
- Prior art keywords
- thread
- screw
- flank
- core
- forming screw
- 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.)
- Withdrawn
Links
- 239000004567 concrete Substances 0.000 title description 5
- 239000004035 construction material Substances 0.000 title 1
- 239000004566 building material Substances 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- F16B33/00—Features common to bolt and nut
- F16B33/02—Shape of thread; Special thread-forms
-
- 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
- F16B13/14—Non-metallic plugs or sleeves; Use of liquid, loose solid or kneadable material therefor
- F16B13/141—Fixing plugs in holes by the use of settable material
-
- 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
Abstract
Description
Die Erfindung betrifft eine Gewindeformende Schraube für Untergründe aus harten Vollbaustoffen mit den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to a thread forming screw for surfaces Hard building materials with the features of the preamble of claim 1.
Derartige Schrauben sind beispielsweise aus
Der Erfindung liegt daher die Aufgabe zu Grunde, eine Schraube der eingangs genannten Art zu schaffen, die auch für die Zugzone geeignet ist.The invention is therefore the task to create a screw of the type mentioned, which also for the train zone is suitable.
Diese Aufgabe wird erfindungsgemäß durch die Schraube mit den Merkmalen des Anspruchs 1 gelöst. Die Schraube weist einen wendelartigen konisch geformten Gewindekern auf, wobei sich der Durchmesser des Gewindekerns zur Gewindeflanke hin entlang der Einbringrichtung der Schraube vergrößert. Sollte die Schraube auf Grund eines Risses im Untergrund an der Gewindeflanke nur noch unzureichenden Halt finden und auch der Gewindekern von der umgebenden ausgehärteten Masse abgelöst werden, so wird sich die Schraube etwas axial verschieben, dann aber wieder aufgrund der Konizität des Gewindekerns sicheren Halt finden. Die geringe axiale Verschiebung wird in der Regel unkritisch für die Befestigung des Gegenstand sein, zeigt aber an, dass es im Untergrund zu Rissen gekommen ist. Hierin besteht ein Vorteil gegenüber dem genannten Stand der Technik, da bei diesem die Schraube sich entweder gar nicht bewegt oder vollständig ausreißt. Es ergeben sich beim Stand der Technik also keinerlei Anzeichen für eine mögliche Gefährdung der Befestigung.This object is achieved by the Screw solved with the features of claim 1. The screw has one helical conical-shaped threaded core, wherein the diameter the thread core to the thread flank along the direction of insertion the screw is enlarged. Should the screw due to a crack in the ground at the thread flank find only insufficient support and also the thread core of the surrounding hardened Mass be replaced, so the screw will move slightly axially, but then again due to the conicity of the Find threaded cores secure hold. The low axial displacement is usually uncritical for the Attachment of the item, but indicates that it is underground has come to tears. This is an advantage over the mentioned prior art, since in this the screw itself either not moving at all or completely uproots. It arise in the prior art so no signs of a possible hazard to the Mounting.
Ohne den Erfindungsgedanken zu verlassen, können selbstverständlich auch in dem Bereich des Schraubenschafts, der kein Gewinde aufweist, ein oder mehrere konische Abschnitte angeordnet sein.Without leaving the idea of the invention, can Of course also in the area of the screw shaft, which has no thread, a or a plurality of conical sections may be arranged.
In einer bevorzugten Ausführung geht der wendelartige konische Gewindekern ohne Absatz in die Gewindeflanke über. Hierdurch wird erreicht, dass im Falle eines Reißens des Untergrunds und einer damit verbundenen Aufweitung des Bohrlochs die Schraube sich sofort axial verschiebt. Im Falle eines Absatzes zwischen Gewindekern und Gewindeflanke könnte es dagegen dazu kommen, dass bei geringer Belastung der Schraube der entsprechende Hinterschnitt dafür sorgt, dass sich die Schraube nicht verschiebt. Ein Riss im Untergrund würde damit nicht erkennbar sein. Erst bei größerer Belastung, die zu einem Ausbrechen des hinterschneidenden Materials führt, kommt es zu einer axialen Verschiebung der Schraube.In a preferred embodiment the helical conical thread core without paragraph in the thread flank over. hereby is achieved that in case of rupture of the ground and a associated widening of the borehole the screw immediately moves axially. In the case of a paragraph between threaded core and Thread flank could On the other hand, it comes to that with low load of the screw the corresponding undercut ensures that the screw is not shifts. A crack in the ground would not be recognizable. Only at higher load, which leads to a breaking out of the undercutting material comes it leads to an axial displacement of the screw.
Vorzugsweise ist die Mantellinie des wendelartigen konischen Gewindekerns konkav, so dass ein absatzloser Übergang von Gewindekern zu einer scharfkantigen Gewindeflanke ermöglicht wird. Selbstverständlich ist eine solche Krümmung aber auch in Verbindung mit einem Absatz zwischen Gewindekern und Gewindeflanke denkbar.Preferably, the generatrix of the helical conical thread core concave, leaving a smooth transition from thread core to a sharp-edged thread flank is made possible. Of course it is such a curvature but also in connection with a paragraph between threaded core and Thread flank conceivable.
In einer Ausführungsform ist die Gewindeflanke nur über einen Teil des Gewindes ausgeformt, das heißt, dass der Außendurchmesser des Gewindes in dem anderen Teil des Gewindes gleich oder kleiner als der Bohrlochdurchmesser ist. Hieraus ergibt sich, dass das Einschraubmoment gegenüber einer über die gesamte Länge ausgeformten Gewindeflanke geringer ist, wohingegen die Auszugsfestigkeit dennoch aufgrund der Hinterschneidungen in der ausgehärteten Masse hoch ist.In one embodiment, the thread flank is only over formed part of the thread, that is, the outer diameter the thread in the other part of the thread equal or smaller than the borehole diameter. It follows that the screwing across from one over the entire length formed thread flank is lower, whereas the pull-out strength nevertheless is high due to the undercuts in the hardened mass.
Als weitere Möglichkeit zur Verringerung des Einschraubmoments sieht eine bevorzugte Ausführungsform der Erfindung vor, dass die Gewindeflanke eine Schneidzahnung aufweist. Gegenüber einer zahnlosen Gewindeflanke wird die Gewindefurche im Bohrloch nicht vorrangig verdrängend geformt, sondern durch Herausbrechen bzw. Herausfräsen des Materials.As another way to reduce the screwing moment provides a preferred embodiment of the invention, that the thread flank has a cutting toothing. Opposite a toothless Thread flank, the thread furrow in the borehole is not a priority Suppressing shaped, but by breaking or milling out of the material.
Die Erfindung wird nachfolgend anhand zweier in der Zeichnung dargestellter Ausführungsbeispiele näher erläutert. Es zeigen:The invention will be described below with reference to two illustrated in the drawings embodiments explained in more detail. It demonstrate:
Die in
In dem in
Bei der Beschreibung des in
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10311471A DE10311471A1 (en) | 2003-03-15 | 2003-03-15 | Thread forming screw for use on foundation formed of hard construction materials e.g. concrete, has each thread root having conical shape that enlarges in diameter towards each thread flank of threaded portion along screwing direction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10311471A DE10311471A1 (en) | 2003-03-15 | 2003-03-15 | Thread forming screw for use on foundation formed of hard construction materials e.g. concrete, has each thread root having conical shape that enlarges in diameter towards each thread flank of threaded portion along screwing direction |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10311471A1 true DE10311471A1 (en) | 2004-09-23 |
Family
ID=32892248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10311471A Withdrawn DE10311471A1 (en) | 2003-03-15 | 2003-03-15 | Thread forming screw for use on foundation formed of hard construction materials e.g. concrete, has each thread root having conical shape that enlarges in diameter towards each thread flank of threaded portion along screwing direction |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10311471A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008030051A1 (en) * | 2008-06-25 | 2010-01-07 | Adolf Würth GmbH & Co. KG | Anchor rod for anchoring in a borehole |
EP2284405A3 (en) * | 2009-08-14 | 2013-01-23 | HILTI Aktiengesellschaft | Anchoring sleeve |
EP2789864A1 (en) | 2013-03-15 | 2014-10-15 | Holding UG SG | Screw |
EP3805178A1 (en) | 2019-10-10 | 2021-04-14 | Hilti Aktiengesellschaft | Storage-stable multicomponent reaction resin system and use thereof |
EP3805179A1 (en) | 2019-10-10 | 2021-04-14 | Hilti Aktiengesellschaft | Multicomponent reaction resin system and use thereof |
EP3805180A1 (en) | 2019-10-10 | 2021-04-14 | Hilti Aktiengesellschaft | Fastening arrangement with a threaded screw and a hardened mass |
EP3940248A1 (en) | 2020-07-14 | 2022-01-19 | Hilti Aktiengesellschaft | Hybrid screw, with thread reaching further back than wedge |
EP3940250A1 (en) | 2020-07-14 | 2022-01-19 | Hilti Aktiengesellschaft | Hybrid screw with buffer zone |
EP3940249A1 (en) | 2020-07-14 | 2022-01-19 | Hilti Aktiengesellschaft | Hybrid screw with compartmentalized wedge groove |
EP4116275A1 (en) | 2021-07-08 | 2023-01-11 | Hilti Aktiengesellschaft | Fastening arrangement with a threaded screw and a hardened anorganic mass containing aluminium |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT389923B (en) * | 1988-01-29 | 1990-02-26 | Sfs Stadler Ag | SELF-DRILLING AND THREADING SCREW FOR TURNING INTO GAS-CONCRETE |
DE19801105A1 (en) * | 1998-01-15 | 1999-07-22 | Toge Duebel A Gerhard Kg | Self-tapping anchorage bolt for concrete structure |
DE19820671A1 (en) * | 1998-05-08 | 1999-11-11 | Fischer Artur Werke Gmbh | Self-tapping screw for use in solid building materials |
DE19957112A1 (en) * | 1999-11-26 | 2001-05-31 | Alfons Knoche | Fastening of self-tapping screws in blind holes of even brittle facade panels, is secured by capsule of adhesive introduced previously |
-
2003
- 2003-03-15 DE DE10311471A patent/DE10311471A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT389923B (en) * | 1988-01-29 | 1990-02-26 | Sfs Stadler Ag | SELF-DRILLING AND THREADING SCREW FOR TURNING INTO GAS-CONCRETE |
DE19801105A1 (en) * | 1998-01-15 | 1999-07-22 | Toge Duebel A Gerhard Kg | Self-tapping anchorage bolt for concrete structure |
DE19820671A1 (en) * | 1998-05-08 | 1999-11-11 | Fischer Artur Werke Gmbh | Self-tapping screw for use in solid building materials |
DE19957112A1 (en) * | 1999-11-26 | 2001-05-31 | Alfons Knoche | Fastening of self-tapping screws in blind holes of even brittle facade panels, is secured by capsule of adhesive introduced previously |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008030051A1 (en) * | 2008-06-25 | 2010-01-07 | Adolf Würth GmbH & Co. KG | Anchor rod for anchoring in a borehole |
DE102008030051B4 (en) * | 2008-06-25 | 2010-10-07 | Adolf Würth GmbH & Co. KG | Anchor rod for anchoring in a borehole |
EP2284405A3 (en) * | 2009-08-14 | 2013-01-23 | HILTI Aktiengesellschaft | Anchoring sleeve |
US9551370B2 (en) | 2009-08-14 | 2017-01-24 | Hilti Aktiengesellschaft | Anchoring sleeve |
EP2789864A1 (en) | 2013-03-15 | 2014-10-15 | Holding UG SG | Screw |
WO2021069437A1 (en) | 2019-10-10 | 2021-04-15 | Hilti Aktiengesellschaft | Storage-stable multi-component reaction resin system and use thereof |
EP3805179A1 (en) | 2019-10-10 | 2021-04-14 | Hilti Aktiengesellschaft | Multicomponent reaction resin system and use thereof |
EP3805180A1 (en) | 2019-10-10 | 2021-04-14 | Hilti Aktiengesellschaft | Fastening arrangement with a threaded screw and a hardened mass |
EP3805178A1 (en) | 2019-10-10 | 2021-04-14 | Hilti Aktiengesellschaft | Storage-stable multicomponent reaction resin system and use thereof |
EP3940248A1 (en) | 2020-07-14 | 2022-01-19 | Hilti Aktiengesellschaft | Hybrid screw, with thread reaching further back than wedge |
EP3940250A1 (en) | 2020-07-14 | 2022-01-19 | Hilti Aktiengesellschaft | Hybrid screw with buffer zone |
EP3940249A1 (en) | 2020-07-14 | 2022-01-19 | Hilti Aktiengesellschaft | Hybrid screw with compartmentalized wedge groove |
WO2022012975A1 (en) | 2020-07-14 | 2022-01-20 | Hilti Aktiengesellschaft | Hybrid screw, with thread reaching further back than wedge |
WO2022012974A1 (en) | 2020-07-14 | 2022-01-20 | Hilti Aktiengesellschaft | Hybrid screw with compartmentalized wedge groove |
WO2022012976A1 (en) | 2020-07-14 | 2022-01-20 | Hilti Aktiengesellschaft | Hybrid screw with buffer zone |
EP4116275A1 (en) | 2021-07-08 | 2023-01-11 | Hilti Aktiengesellschaft | Fastening arrangement with a threaded screw and a hardened anorganic mass containing aluminium |
WO2023280570A1 (en) | 2021-07-08 | 2023-01-12 | Hilti Aktiengesellschaft | Fastening assembly comprising a thread-forming screw and a hardened aluminate-containing inorganic compound |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: FISCHERWERKE GMBH & CO. KG, 72178 WALDACHTAL, DE |
|
8141 | Disposal/no request for examination |