CA2897872C - Vis - Google Patents

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Publication number
CA2897872C
CA2897872C CA2897872A CA2897872A CA2897872C CA 2897872 C CA2897872 C CA 2897872C CA 2897872 A CA2897872 A CA 2897872A CA 2897872 A CA2897872 A CA 2897872A CA 2897872 C CA2897872 C CA 2897872C
Authority
CA
Canada
Prior art keywords
screw
thread
cutting
degrees
straight portion
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.)
Active
Application number
CA2897872A
Other languages
English (en)
Other versions
CA2897872A1 (fr
Inventor
Jung-Nan Lin
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.)
Fushang Co Ltd
Original Assignee
Fushang Co Ltd
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 Fushang Co Ltd filed Critical Fushang Co Ltd
Priority to CA2897872A priority Critical patent/CA2897872C/fr
Publication of CA2897872A1 publication Critical patent/CA2897872A1/fr
Application granted granted Critical
Publication of CA2897872C publication Critical patent/CA2897872C/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F16B25/0015—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 soft organic material, e.g. wood or plastic
    • 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
    • F16B25/0057—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 screw having distinct axial zones, e.g. multiple axial thread sections with different pitch or thread cross-sections
    • F16B25/0063—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 screw having distinct axial zones, e.g. multiple axial thread sections with different pitch or thread cross-sections with a non-threaded portion on the shaft of the screw
    • 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
    • F16B25/103—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a drilling screw-point, i.e. with a cutting and material removing action

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Connection Of Plates (AREA)

Abstract

Une vis est pourvue dune tige comportant une extrémité dinsertion et une extrémité de tête présentant une partie supérieure avec une partie de coupe et une partie inférieure depuis laquelle une pluralité de dents anti-dévissage font saillie. Chaque dent anti-dévissage comprend une face de guidage et une face de butée croisant une surface circonférentielle de la partie inférieure pour la création dun canal évidé. Un premier filet sur la tige comprend une pluralité de convolutions de filetage asymétriques, chacune présentant une première face de coupe orientée vers lextrémité dinsertion et une deuxième face de coupe adossée à lextrémité dinsertion. La première face de coupe et un axe horizontal forment un angle inclus entre 25 et 45 degrés. La deuxième face de coupe et laxe horizontal forment un angle inclus entre 3 et 23 degrés. La vis favorise la planéité de la surface dune planche à fixer et des propriétés dextraction et danti-dévissage de la vis.
CA2897872A 2015-07-17 2015-07-17 Vis Active CA2897872C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2897872A CA2897872C (fr) 2015-07-17 2015-07-17 Vis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2897872A CA2897872C (fr) 2015-07-17 2015-07-17 Vis

Publications (2)

Publication Number Publication Date
CA2897872A1 CA2897872A1 (fr) 2017-01-17
CA2897872C true CA2897872C (fr) 2017-12-12

Family

ID=57810210

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2897872A Active CA2897872C (fr) 2015-07-17 2015-07-17 Vis

Country Status (1)

Country Link
CA (1) CA2897872C (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018116368A1 (de) * 2018-07-06 2020-01-09 Fischerwerke Gmbh & Co. Kg Schraube

Also Published As

Publication number Publication date
CA2897872A1 (fr) 2017-01-17

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