WO2007025736A2 - Vis a laminer les filets - Google Patents

Vis a laminer les filets Download PDF

Info

Publication number
WO2007025736A2
WO2007025736A2 PCT/EP2006/008484 EP2006008484W WO2007025736A2 WO 2007025736 A2 WO2007025736 A2 WO 2007025736A2 EP 2006008484 W EP2006008484 W EP 2006008484W WO 2007025736 A2 WO2007025736 A2 WO 2007025736A2
Authority
WO
WIPO (PCT)
Prior art keywords
thread
projections
over
screw
trailing edge
Prior art date
Application number
PCT/EP2006/008484
Other languages
German (de)
English (en)
Other versions
WO2007025736A3 (fr
Inventor
Heinrich Friederich
Michael Achenbach
Original Assignee
Ejot Gmbh & 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 Ejot Gmbh & Co. Kg filed Critical Ejot Gmbh & Co. Kg
Publication of WO2007025736A2 publication Critical patent/WO2007025736A2/fr
Publication of WO2007025736A3 publication Critical patent/WO2007025736A3/fr

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
    • F16B25/001—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
    • F16B25/0021—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 metal, e.g. sheet-metal or aluminium
    • 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

Definitions

  • the invention relates to a thread-forming screw with projections on its thread, wherein the trailing edge of the thread is provided from the beginning of the thread with protruding from her projections and their load flank forms a continuous smooth surface.
  • Screws with such projections are present in large numbers in the prior art.
  • these are screws which are provided on their load flank (the flank facing the screw head) with projections which are designed so that they oppose the reverse rotation of a screwed screw a particularly large resistance (see DE 299 06 105 Ul Unscrewing cam 8, Japanese Patent Application 09144733 projection 5).
  • the invention has for its object to make a thread-forming screw with projections on their flanks so that on the one hand during Ewear- hen the thread with a favorable force fear and on the other hand in the attracted state particularly high axial loads (biasing force) can withstand. According to the invention, this is done in that the projections extend over the thread tips and the thread is provided over its full length with the projections.
  • the protrusions that protrude from the trailing edge and extend over the thread tips when screwing the screw into a nut piece by the case leading projections threading the thread in a favorable manner, because the trailing edge forms the leading side of the screw.
  • the protruding over the thread tips projections support in a particularly intensive manner, the threading of the thread over the full length of the screw in the nut piece, so that no particularly high torques are required for this Einfurchen.
  • the number of projections along a thread over 360 ° can be provided in various numbers. Thus, e.g. be provided over the range of 360 ° at least two projections, which means that of course much more projections are distributed over the 360 °.
  • Figure 1 is a thread-forming screw provided over the full length of its thread projections
  • Figure 2 shows a section of the thread with projections in an enlarged view
  • Figure 3 shows a cross section through a thread along the section III-III of Figure 2;
  • Figure 4 shows a section through the screw of Figure 1 along the section IV-IV;
  • Figure 5a shows a modification of the shape of the projections according to Figures 1 and 2 with a curvature.
  • Figure 5b shows a further modification of the shape of the projections according to Figures 1 and 2 with a single-sided curved ridge edge
  • Figure 5c shows a further modification of a design of the projections, in which the corners of the projections are provided only on one side with edges.
  • FIG. 1 shows a thread-forming screw 1 with the screw head 2 and the shank 3, which is provided with the thread 4 over substantially its entire length.
  • the thread is provided over its entire axial length with the protruding projections 5.
  • FIG. 2 shows that the projections 5 are provided only on the trailing edge 8 of the threads 7, whereas the opposite load flank 9 of each thread Ganges forms a continuous smooth surface, which is thus interrupted by any projection. Accordingly, the load flank 9 can absorb considerable axial forces which act on the screw in the tightened state.
  • the protrusions 5 arranged on the trailing edge 8 ensure, when the screw is screwed into a nut piece, that the projections substantially facilitate the indentation by improved pushing away of the relevant material in the nut piece.
  • the arrow drawn in Figure 2 points to the screw head 2.
  • FIG. 3 shows a cross section along the line III - III from FIG. 2, from which it emerges how the projection 5 (drawn in a hatched manner) extends over the respective thread 7.
  • the projection 5 is in a sense on the entire surface of the trailing edge 8 and extends over the thread crest 10, so that a projection 5 results, which extends from the thread base 11 to over the thread crest 10.
  • the trailing edge 8 on the projection 20 which is axially bulged in the region of the threaded tip 21 in the direction of the threaded end.
  • the pros cracks 22 according to FIG. 5b project unilaterally with the curvature 23 and thus cause, instead of a more intersecting displacement of the parent material, a pushing away of this material when the relevant screw is screwed in.
  • the design according to FIG. 5 c contains on one side a sharp-edged boundary 24 of the projection 25, which then merges gently into the trailing edge 8, similar to the design according to FIG. 5 b.
  • the load flank 9 forms a continuous smooth surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Forging (AREA)
  • Connection Of Plates (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne une vis à laminer les filets, comportant des projections sur son filet, son flanc arrière étant muni à partir du début du filet, de projections faisant saillie de lui et son flanc de charge formant une surface lisse continue. Les projections s'étendent sur les pointes de pas du filet et le filet comporte des projections sur toute sa longueur.
PCT/EP2006/008484 2005-09-01 2006-08-30 Vis a laminer les filets WO2007025736A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005041586A DE102005041586A1 (de) 2005-09-01 2005-09-01 Gewindefurchende Schraube
DE102005041586.5 2005-09-01

Publications (2)

Publication Number Publication Date
WO2007025736A2 true WO2007025736A2 (fr) 2007-03-08
WO2007025736A3 WO2007025736A3 (fr) 2007-07-19

Family

ID=37735420

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/008484 WO2007025736A2 (fr) 2005-09-01 2006-08-30 Vis a laminer les filets

Country Status (2)

Country Link
DE (1) DE102005041586A1 (fr)
WO (1) WO2007025736A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111981015A (zh) * 2019-05-21 2020-11-24 株式会社托普拉 外螺纹部件

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008027297A1 (de) 2008-06-06 2009-12-10 Pee-Wee Kaltwalz- Und Rohrbearbeitungsmaschinen Gmbh Verbindungselement für eine Schraubverbindung sowie eine solche Schraubverbindung
DE102014007039A1 (de) * 2014-05-14 2015-11-19 Sfs Intec Holding Ag Befestigungsanordnung, Schraube für eine Befestigungsanordnung und Verwendung einer Schraube in einer Befestigungsanordnung
JP5909747B2 (ja) * 2014-07-28 2016-04-27 株式会社青山製作所 軟質金属用セルフタップねじ
DE102017219160A1 (de) * 2017-10-25 2019-04-25 Toge Dübel Gmbh & Co. Kg Schraube zum Einschrauben in ein Bohrloch
EP3518798B1 (fr) 2017-12-06 2020-05-13 Stryker European Holdings I, LLC Vis de verrouillage orthopédique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2703433A1 (de) 1977-01-28 1978-12-07 Schumacher Wilhelm Kg Gewindeformende schraube sowie verfahren zum herstellen derselben und walzbacke zur durchfuehrung des verfahrens
DE4206440A1 (de) 1991-03-27 1992-10-01 Reisser Schraubenwerk Gmbh & C Gewindeformende schraube
JPH09144733A (ja) 1995-11-24 1997-06-03 Nitto Seiko Co Ltd 緩み止めねじ
DE19724052A1 (de) 1997-06-07 1998-12-10 Wuerth Adolf Gmbh & Co Kg Schraube
DE29906105U1 (de) 1999-04-03 1999-07-29 Duve Umformtechnik GmbH, 58809 Neuenrade Schraube

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH10564A (de) * 1895-07-11 1895-12-31 Franz Dietz Selbstthätig auslösbare Schraubensicherung
US2301181A (en) * 1941-10-23 1942-11-10 Eric M Ilsemann Self-locking threaded fastening element
US3426642A (en) * 1962-02-05 1969-02-11 Res Eng & Mfg Self-tapping screws with threadforming projections
US4653968A (en) * 1980-08-25 1987-03-31 Illinois Tool Works, Inc. Adjustable abutment assembly
DE4022918A1 (de) * 1990-07-19 1992-01-23 Lauer Peter Dipl Ing Fh Selbstsichernde schraubverbindung mit schraube, gewindestift und mutter
DE9212532U1 (de) * 1992-09-17 1993-10-14 Gefinex-Jackon GmbH, 33803 Steinhagen Schraube
DE4419988A1 (de) * 1994-06-08 1995-12-14 Eichsfelder Schraubenwerk Gmbh Gewindeformende Schraube
US6464439B1 (en) * 1997-08-04 2002-10-15 Bernhard M. Janitzki Low tolerance threaded fastener

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2703433A1 (de) 1977-01-28 1978-12-07 Schumacher Wilhelm Kg Gewindeformende schraube sowie verfahren zum herstellen derselben und walzbacke zur durchfuehrung des verfahrens
DE4206440A1 (de) 1991-03-27 1992-10-01 Reisser Schraubenwerk Gmbh & C Gewindeformende schraube
JPH09144733A (ja) 1995-11-24 1997-06-03 Nitto Seiko Co Ltd 緩み止めねじ
DE19724052A1 (de) 1997-06-07 1998-12-10 Wuerth Adolf Gmbh & Co Kg Schraube
DE29906105U1 (de) 1999-04-03 1999-07-29 Duve Umformtechnik GmbH, 58809 Neuenrade Schraube

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111981015A (zh) * 2019-05-21 2020-11-24 株式会社托普拉 外螺纹部件
EP3742008A1 (fr) * 2019-05-21 2020-11-25 Topura Co., Ltd. Élément de vis externe
US10954985B2 (en) 2019-05-21 2021-03-23 Topura Co., Ltd. External screw member

Also Published As

Publication number Publication date
DE102005041586A1 (de) 2007-03-08
WO2007025736A3 (fr) 2007-07-19

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