EP1872021A1 - Vis a beton a fileter - Google Patents

Vis a beton a fileter

Info

Publication number
EP1872021A1
EP1872021A1 EP06723994A EP06723994A EP1872021A1 EP 1872021 A1 EP1872021 A1 EP 1872021A1 EP 06723994 A EP06723994 A EP 06723994A EP 06723994 A EP06723994 A EP 06723994A EP 1872021 A1 EP1872021 A1 EP 1872021A1
Authority
EP
European Patent Office
Prior art keywords
thread
concrete
screw
outer diameter
threads
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Withdrawn
Application number
EP06723994A
Other languages
German (de)
English (en)
Inventor
Jan-Christian Becker
Oliver Hacker
Klaus Mayer
Marc Schäffer
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.)
Fischerwerke GmbH and Co KG
Original Assignee
Fischerwerke Artur Fischer GmbH and Co 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 Fischerwerke Artur Fischer GmbH and Co KG filed Critical Fischerwerke Artur Fischer GmbH and Co KG
Publication of EP1872021A1 publication Critical patent/EP1872021A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F16B25/0042—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
    • F16B25/0047—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 being characterised by its cross-section in the plane of the shaft axis
    • 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
    • F16B25/0036—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
    • F16B25/0068—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 with multiple-threads, e.g. a double thread screws
    • 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
    • F16B25/0073—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 characterised by its pitch, e.g. a varying pitch
    • 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
    • F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws

Definitions

  • the invention relates to a thread-cutting concrete screw for screwing into a hole in concrete, masonry or the like.
  • Concrete screws are screwed without dowels or the like. In a pre-drilled hole in concrete, masonry or the like. Its thread cuts into a borehole wall. A core diameter of the concrete screw is smaller than a borehole diameter so that there is a gap between the screw core and the borehole wall.
  • An example of such a concrete screw is disclosed in EP 623 759 B1.
  • the invention has for its object to provide a thread-cutting concrete screw! 0, the high holding force at an acceptable screwing or
  • the concrete screw according to the invention has two threads with different
  • Borehole diameter should be smaller than an outer diameter of the smaller thread, so that also cuts the thread with the smaller outer diameter in the borehole wall and contributes to the maintenance of the concrete screw in the concrete.
  • the two threads with different outside diameters transmit the force more evenly and better distributed in the concrete than a single thread and also as two threads with the same outside diameters. Another advantage is an improved setting feeling for a user when screwing the concrete screw into the borehole, the concrete screw screws and cuts better into the borehole.
  • the different pitches of the threads in both directions of the concrete screw improve the power transfer from the concrete screw to the concrete.
  • the distances of the threads are chosen from each other so large that
  • Drill flour that has remained in the well bore after drilling and that results from cutting the threads into the borehole wall has sufficient clearance between the threads and between a core of the concrete screw and the borehole wall.
  • the distance of the thread with the smaller outer diameter of the thread with the larger outer diameter in the direction of a front screw end of the concrete screw is greater than in the direction of a rear screw end of the concrete screw.
  • the front end of the screw is the one with which the concrete screw is screwed into the borehole in advance.
  • the rear end of the screw usually has a screw head and is provided for attaching a rotary tool or a rotary impact tool. Seen from the thread with the larger outer diameter of the thread with the smaller outer diameter in the direction of the front end of the screw on a smaller distance than in the direction of the rear end of the screw.
  • the ratio of the outer diameter of the thread having the larger outer diameter to the outer diameter of the thread having the smaller outer diameter is about 1.03 to 1.14.
  • the larger outer diameter may be up to about 20% larger than the smaller outer diameter. This diameter ratio of the outer diameter of the two threads has been found to be favorable for a high holding force of the concrete screw in the concrete.
  • the ratio of outer diameter of the thread with the larger outer diameter to a pitch of the threads of the concrete screw is in one embodiment of the invention about 0.9 to 1, 2.
  • the slope is the axial
  • the ratio of the outer diameter of the thread having the larger outer diameter to a core diameter of the concrete screw in one embodiment of the invention is about 1.2 to 1.4, preferably about 1.25 to 1.35 and in particular 1.27 to 1.32.
  • the latter ratio has proven to be favorable for a high holding force of the concrete screw in concrete at an acceptable screwing. Comparable good holding values and screwing moments are conceivable with the larger tolerance fields anyway.
  • a flank angle ⁇ of one or both threads of the concrete screw is in an embodiment of the invention about 40 ° to 50 °.
  • the threads can be pointed threads with equal flank angles on both sides of the threads.
  • An embodiment of the invention provides a shege leopardgewinde for one or both threads of the concrete screw, preferably those for the front
  • Screw end pointing thread flank steeper and pointing to the rear end of the screw thread flank is flatter.
  • the front thread flank has an angle of, for example, about 80 ° to 90 ° to the axial direction, so it is radially or at an angle of up to about 10 ° to a radial.
  • the flank angle between the two flanks of each thread remains unchanged between about 40 ° and 50 ° or is blunter.
  • the greater inclination of the trailing edge of the threads in a buttress thread improves the transmission of power from the thread to the concrete.
  • the claim 8 is on the screwed into a hole in concrete, thread-cutting concrete screw in the above-described embodiments directed.
  • the ratio of pitch of the threads of the concrete screw to the borehole diameter in a preferred embodiment of the invention about 1, 01 to 1, 45th
  • the ratio of outer diameter of the thread with the smaller outer diameter to the borehole diameter is in an embodiment of the invention about 1.01 to 1.15 and the ratio of
  • Core diameter of the concrete screw to the borehole diameter in an embodiment of the invention about 0.95.
  • the ratio of a distance of the threads from one another in the direction of the rear screw end of the concrete screw to a penetration depth of the respective thread into the borehole wall about 8: 1.
  • the penetration depth is 1/2 of the difference between the outer diameter of the respective thread and the hole diameter. Since the pitch of the threads is different from each other as seen in the direction of the rear end of the screw screw, smaller in the thread with the smaller outer diameter and larger in the thread with the larger outer diameter, the specified ratio of the pitch of the threads to the penetration depth for both threads at least be realized in about.
  • the ratio is also dependent on the concrete strength. This embodiment has proven to be favorable for a high power transmission from the threads to the concrete.
  • FIGURE shows a concrete screw according to the invention, which is screwed a little way into a borehole.
  • the drawing is not to scale.
  • Concrete screw 1 is provided for screwing into a borehole 2 in concrete 3, masonry or the like.
  • the concrete screw 1 is screwed into the borehole 2 without the use of a dowel or other auxiliary means.
  • the concrete screw 1 has a frusto-conical taper 4 at a front
  • the screw head 6 is a hexagonal head, this head shape is not mandatory.
  • the concrete screw 1 has two threads 8, 9 with different outside diameters.
  • An outer diameter d, of the thread 8 with the smaller outer diameter d- is greater than a borehole diameter D, so that when screwing the concrete screw 1 into the borehole 2, both threads 8, 9 cut into a borehole wall 10.
  • the threads 8, 9 are located outside of a center of the turns of the other thread 8, 9 is viewed from the front end of the screw 5, a distance P 1 from the thread 8 with the smaller diameter Cl 1 to the thread 9 d having the larger external diameter 2 smaller than a distance p 2 from the thread 9 with the larger outer diameter d 2 to the thread 8 with the smaller outer diameter d- ,.
  • the pitch p of the concrete screw 1 is the distance from one turn of a thread 8, 9 to the following turn of the same thread 8, 9, so the
  • the threads 8, 9 can be designed as a pointed thread with a flank angle of, for example, about 40 ° to 50 ° (not shown). In the illustrated and described embodiment of the invention, the threads 8, 9 than
  • the front flank 11, 12 of the threads 8, 9 has an angle of about 80 ° to 90 ° to an axial direction of the concrete screw 1, in the illustrated and described embodiment, the angle is 80 °, i. the front flank 11, 12 of the threads 8, 9 is almost radially from the concrete screw 1 from.
  • the flank angle ⁇ between the two flanks 11, 13; 12, 14 of the threads 8, 9 is 60 °, so that the rear edge 13, 14 of the threads 8, 9 is at an angle of 40 ° to the axial direction of the concrete screw 1.
  • Threads 8, 9 which form a frustoconical, winding around a threaded core 15 of the concrete screw 1 surface are for a holding force of the concrete screw 1 in the concrete 3 determining or at least co-determining.
  • Outer diameter to the core diameter d ⁇ of Gewindekems 15 is 1, 3, the Outer diameter d 2 of the thread 9 with the larger outer diameter d 2 is about 10-12% larger than the outer diameter d 1 of the thread 8 with the smaller outer diameter di.
  • Outside diameter to the pitch p of the concrete screw is 1 or a little more.
  • the ratio of the distances P 1, p 2 of the threads 8, 9 from each other, as seen from the front end of the screw 5, to the penetration depth of the respective thread 8, 9 in the borehole wall 10 is about 8: 1.
  • Thread 8 with the smaller outer diameter d. A smaller depth of penetration into the borehole wall 10, the required support length in the axial direction until the next thread 9 for transmitting a pull-out force from the concrete screw 1 to the concrete 3 is smaller than the thread 9 with the larger outer diameter d 2 .
  • the said ratio of 8: 1 seems to give an optimal value for the transmission of force from the threads 8, 9 to the concrete 3 and thus a high holding force of the concrete screw 1 in the concrete 3 or at least to be close to the optimum value.
  • Diameter D of the borehole 2 is about 1, 2, the ratio of the outer diameter d of the thread 8 with the smaller outer diameter d., To the diameter D of the borehole 2 is about 1, 1. The ratio of the diameter D ⁇ of the thread core 15 of the concrete screw 1 to the hole diameter D is about 0.95, so that a gap between the
  • Thread core 15 and the borehole wall 10 is made.
  • the screwing the concrete screw 1 in the hole 2 is thereby improved or even possible.
  • drilling dust can collect from the drilling of the borehole 2 and from the cutting of the threads 8, 9 into the borehole wall 10 when the concrete screw 1 is screwed in.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Earth Drilling (AREA)

Abstract

Pour améliorer la force de maintien d'une vis à béton à fileter (1) dans un trou de perçage (2) dans du béton, ladite vis à béton (1) présente deux filets (8, 9) de diamètres extérieurs différents (d<SUB>1 </SUB>,d<SUB>2</SUB>). A partir d'une extrémité avant de vis (5), un écart (P<SUB>1</SUB>) entre le filet (8) présentant le diamètre extérieur inférieur (d<SUB>1</SUB>) et le filet (9) présentant le diamètre extérieur supérieur (d<SUB>2</SUB>), est inférieur à un écart (P<SUB>2</SUB>) entre le filet (9) présentant le diamètre extérieur supérieur (d<SUB>2</SUB>) et le filet (8) présentant le diamètre extérieur inférieur (d<SUB>1</SUB>). Les filets (8, 9) sont de préférence des filets en dents de scie.
EP06723994A 2005-04-16 2006-04-04 Vis a beton a fileter Withdrawn EP1872021A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005017596A DE102005017596A1 (de) 2005-04-16 2005-04-16 Gewindeschneidende Betonschraube
PCT/EP2006/003036 WO2006111267A1 (fr) 2005-04-16 2006-04-04 Vis a beton a fileter

Publications (1)

Publication Number Publication Date
EP1872021A1 true EP1872021A1 (fr) 2008-01-02

Family

ID=36699118

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06723994A Withdrawn EP1872021A1 (fr) 2005-04-16 2006-04-04 Vis a beton a fileter

Country Status (9)

Country Link
US (1) US20090022568A1 (fr)
EP (1) EP1872021A1 (fr)
JP (1) JP2008537989A (fr)
KR (1) KR20080005917A (fr)
CN (1) CN101160471A (fr)
AU (1) AU2006237073A1 (fr)
DE (1) DE102005017596A1 (fr)
WO (1) WO2006111267A1 (fr)
ZA (1) ZA200707750B (fr)

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CN103452992A (zh) * 2013-09-17 2013-12-18 上海美固澄梵紧固件有限公司 一种锚栓

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DE102007023735A1 (de) 2007-05-22 2008-11-27 Fischerwerke Gmbh & Co. Kg Gewindenschneidende Betonschraube und Anordnung mit einer solchen Betonschraube
CN101315999B (zh) * 2008-06-27 2012-10-03 华为技术有限公司 螺钉装置和使用该螺钉装置的空腔滤波器
DE202008011808U1 (de) 2008-09-05 2008-12-24 M-Cut Systems Gmbh & Co. Kg Gewindeformende Schraube
DE102009001815A1 (de) * 2009-03-24 2010-10-07 Hilti Aktiengesellschaft Verfahren zur Verankerung eines Befestigungselementes in einem mineralischen Bauteil sowie Befestigungselement für mineralische Bauteile
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EP2354572B1 (fr) 2010-01-18 2014-07-02 UIP GmbH & Co. KG Vis autotaraudeuse
US20110176888A1 (en) * 2010-01-20 2011-07-21 Powers Fasteners, Inc. Masonry anchor
SG179322A1 (en) * 2010-10-01 2012-04-27 Infastech Ip Pte Ltd Threaded fastener
EP2581611A1 (fr) * 2011-10-13 2013-04-17 UIP GmbH & Co. KG Agencement de fixation doté d'une vis bifonctionnelle
KR101417350B1 (ko) * 2012-10-02 2014-07-16 이영희 다양한 상대물에 체결 가능한 범용 태핑 스크류 및 이를 이용한 체결방법
KR101248434B1 (ko) * 2012-10-30 2013-04-02 (주) 효창이엔지 강연선 설치구, 이를 이용한 강연선 설치방법 및 조립식 우수저류조의 블록간 결합구조
EP2728209B1 (fr) 2012-11-05 2017-07-12 SG Holding UG Vis autotaraudeuse
DE102013108743A1 (de) * 2013-08-13 2015-02-19 Fischerwerke Gmbh & Co. Kg Betonschraube
EP3001045B1 (fr) * 2014-09-23 2020-09-02 TOGE Dübel GmbH & Co. KG Vis auto-taraudeuse destinee a visser dans un alesage dans un materiau, systeme dote d'une telle vis auto-taraudeuse et procede de vissage d'une telle vis dans un alesage
DE102014219116A1 (de) * 2014-09-23 2016-03-24 Toge Dübel Gmbh & Co. Kg Selbstschneidende Schraube zum Einschrauben in ein Bohrloch in einem Werkstoff, Anordnung mit einer derartigen Schraube und Verfahren zum Einschrauben einer derartigen Schraube in ein Bohrloch
SE538636C2 (en) * 2014-12-12 2016-10-04 Essve Produkter Ab Concrete screw
DE102015120470A1 (de) * 2015-11-26 2017-06-01 Fischerwerke Gmbh & Co. Kg Betonschraube
TWI623690B (zh) * 2017-01-25 2018-05-11 Cement screw
US11156265B2 (en) * 2017-09-13 2021-10-26 Devin Mergens Cable railing system and method of installation
USD875514S1 (en) * 2018-01-15 2020-02-18 Ningbo Anchor Fasteners Industrial Co., Ltd. Concrete screw with ring groove
EP3536812A1 (fr) * 2018-03-08 2019-09-11 HILTI Aktiengesellschaft Vis composée de deux métaux à acier marténsitique thermodurcissable
GB201912551D0 (en) 2019-09-01 2019-10-16 Product Licensing Company Ltd Method & means of forming threaded ties and rods

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103452992A (zh) * 2013-09-17 2013-12-18 上海美固澄梵紧固件有限公司 一种锚栓
CN103452992B (zh) * 2013-09-17 2016-01-20 上海美固澄梵紧固件有限公司 一种锚栓

Also Published As

Publication number Publication date
US20090022568A1 (en) 2009-01-22
WO2006111267A1 (fr) 2006-10-26
CN101160471A (zh) 2008-04-09
AU2006237073A1 (en) 2006-10-26
JP2008537989A (ja) 2008-10-02
DE102005017596A1 (de) 2006-10-19
KR20080005917A (ko) 2008-01-15
ZA200707750B (en) 2008-09-25

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