WO2024088846A1 - Vis - Google Patents

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Publication number
WO2024088846A1
WO2024088846A1 PCT/EP2023/078976 EP2023078976W WO2024088846A1 WO 2024088846 A1 WO2024088846 A1 WO 2024088846A1 EP 2023078976 W EP2023078976 W EP 2023078976W WO 2024088846 A1 WO2024088846 A1 WO 2024088846A1
Authority
WO
WIPO (PCT)
Prior art keywords
screw
thickening
thread
tip
longitudinal axis
Prior art date
Application number
PCT/EP2023/078976
Other languages
German (de)
English (en)
Inventor
Frank Langewiesche
Jacek Romanko
Original Assignee
Spax International 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
Priority claimed from EP22204159.2A external-priority patent/EP4361459A1/fr
Application filed by Spax International Gmbh & Co. Kg filed Critical Spax International Gmbh & Co. Kg
Publication of WO2024088846A1 publication Critical patent/WO2024088846A1/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
    • F16B25/0015—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
    • F16B25/0084—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

Definitions

  • the invention relates to a screw according to claim 1.
  • the invention relates to a screw, in particular a wood screw, having a thread and a conical tip, with a cylindrically shaped shaft, with a thickening arranged behind the shaft.
  • the screw has a longitudinal axis in the traditional way.
  • the screw extends along this longitudinal axis from a head with a force application to the tip.
  • cylindrical shaft is arranged behind the tip is to be understood in such a way that the cylindrical shaft is located longitudinally behind the tip when viewed from the front tip.
  • the thread extends between the head and the tip in a conventional manner. Between the head and the thread there may be a further cylindrical shaft having a diameter larger than the core diameter of the thread.
  • the feature of the core diameter of the thread is known to the person skilled in the art.
  • the thread may extend to the front end of the tip in a conventional manner. Alternatively, there may be a region at the front end of the tip where there is no thread.
  • the thickening is cylindrical, in particular annular, in particular circular.
  • the thickening may be conical, with the thickening preferably becoming wider towards the tip.
  • the thickening can also have other spherical shapes.
  • a step is arranged behind the shaft, wherein the step is preferably arranged at an angle of 60° to 120° to the longitudinal axis of the screw, wherein the step is particularly preferably arranged perpendicular to the longitudinal axis of the screw.
  • a diameter of the thickening is between 10% and 50% of a thread depth of the thread.
  • the thickening has a length in the direction of the screw's longitudinal axis, wherein the length is less than 5 times a pitch of the thread.
  • the screw has at least one further thickening, wherein the at least one further thickening is arranged at the end of the thread, preferably at the transition to a shaft on a head of the screw, and/or is arranged in a region of the thread, preferably in the middle of the region.
  • This at least one additional thickening can widen the hole or opening into which the screw is screwed. This can reduce the friction generated by the adjoining shaft.
  • the shaft can be circular-cylindrical or polygonal.
  • the at least one further thickening can be formed identically to the thickening.
  • the at least one further thickening can, however, also have a different formation than the thickening.
  • the at least one further thickening is cylindrical, in particular annular, in particular circular.
  • the at least one further thickening is conical, with the at least one further thickening preferably becoming wider towards the tip. This can widen the bore or the opening, whereby the friction can be reduced further down the line.
  • a step is arranged on the at least one further thickening, wherein the step is preferably arranged at an angle of 60°-120° to the screw longitudinal axis, wherein the step is particularly preferably arranged perpendicular to the screw longitudinal axis.
  • a diameter of the at least one further thickening is between 10% and 50% of the thread depth of the thread.
  • the at least one further thickening in the direction of the screw's longitudinal axis has a length which is less than 5 times the pitch of the thread.
  • Figure la shows schematically a screw according to the invention according to a first embodiment
  • Figure 1 b shows a section of the screw from Figure l a, where the screw has been rotated 120° clockwise around the longitudinal axis
  • Figure 1 c shows the section of the screw from Figure 1b, where the screw has been rotated 120° clockwise around the longitudinal axis
  • Figure 2a shows schematically a screw according to the invention according to a second embodiment
  • Figure 2b shows, analogously to Figure 1b, a section of the screw from Figure 2a, whereby the screw has been rotated 120° clockwise along the longitudinal axis
  • Figure 2c shows, analogously to Figure 1c, the section of the screw from Figure 2b, whereby the screw has been rotated 120° clockwise along the screw's longitudinal axis
  • Figure 3a shows schematically a screw according to the invention according to a third embodiment
  • Figure 3b shows a section of the screw from Figure 3a
  • Figure 4 shows schematically a screw according to the invention according to a fourth embodiment.
  • FIGS 1 a, 1 b and 1 c show schematically a screw 1 according to the invention in accordance with a first embodiment of the invention.
  • the screw 1 extends along a longitudinal screw axis L. At the rear end of the screw there is a head 2 with a conventional force attack for a suitable operating tool.
  • a cylindrical shaft with a diameter In front of the head there is a cylindrical shaft with a diameter, the diameter of this shaft being larger than a core diameter of a thread 3, which is arranged in an area 7.
  • the area 7 with the thread 3 is located in front of the cylindrical shaft when viewed in the longitudinal direction L.
  • a chamfer is arranged between the cylindrical shaft and the area 7 with the thread 3, so that the wider diameter of the shaft tapers to the core diameter of the thread 3 in the area 7.
  • the thread 3 has a pitch P.
  • the thread 3 has a thread depth t.
  • the screw 1 extends to a front end at which a conical tip 4 is located.
  • Behind the tip 4 extends a cylindrical shaft 5 whose length a is smaller than the pitch P of the thread 3.
  • a cylindrically formed thickening 6 is arranged behind the cylindrical shaft 5, wherein the length a of the thickening 6 is smaller than the pitch P.
  • a step 8 is arranged between the cylindrical shaft 5 and the cylindrical thickening 6, wherein this step 8 is arranged at an angle of 90° to the longitudinal axis L in this embodiment.
  • the thread 3 extends in the longitudinal direction L beyond the thickening 6 and also over the cylindrical shaft 5 up to the front end of the tip 4. Detailed views and rotated views are visible in Figures 1b and 1c.
  • FIGS. 2a, 2b and 2c schematically show a second embodiment of the present invention.
  • the screw 1 ' extends along a screw longitudinal axis L as in the first embodiment from a head 2 with a force application to towards a conical tip 4 in the front area of the screw 1 ' .
  • the second embodiment has the following differences compared to the first embodiment.
  • the screw 1' has a thickening 6'.
  • the thickening 6' is designed to widen conically, with the diameter of the thickening 6' increasing in the direction of the tip.
  • the conical thickening 6' thus begins in its rear area with the diameter of the core diameter of the thread 3 and widens up to a larger diameter.
  • step 8' between the cylindrical shaft 5 and the thickening 6', wherein the step 8' extends at an angle of 90° to the longitudinal axis L.
  • the thickening 6' extends in the longitudinal direction L along a length a, wherein the length a in this embodiment is smaller than the pitch P of the thread 3.
  • Figures 2b and 2c show twisted views of the front area of the screw 1 ' with the tip 4.
  • Figure 3a shows schematically a screw 1" according to the invention according to a third embodiment.
  • the screw 1" has a thickening 6' according to the invention at the tip 4, which in this example is designed analogously to the design in Figures 2a-2c. In this respect, reference is made to the explanations for these figures.
  • the screw 1" has a further thickening 6", which is arranged at the rear end of the region 7 with the thread 3 and is arranged at the transition to a shaft 9, wherein the shaft 9 can be cylindrical or polygonal, for example.
  • the further thickening 6" is designed similarly to the thickening 6' at the tip 4; in this respect, reference is made to the explanations for Figures 2a-2c.
  • the further thickening 6" thus widens conically in the direction of the tip 4.
  • Figure 3b shows a section of the screw 1" from Figure 3a, which is marked with the circle in Figure 3a.
  • Figure 3b shows that the diameter D4 of the shaft 9 is smaller than the maximum diameter D3 of the further thickening 6". This advantageously widens the opening into which the screw is screwed. Also shown is the core diameter Dl of area 7 with thread 3, as well as the thread diameter D2 of thread 3.
  • the further thickening 6" extends along a length a' and widens at an angle v.
  • the angle v is the angle between the extensions of the outer contour of the further thickening 6".
  • the angle v is 5-30 °.
  • the maximum diameter D3 is at this step 8".
  • FIG 4 shows schematically a screw 1'" according to the invention in accordance with a fourth embodiment.
  • the screw has a conical thickening 6' in the area of the tip 4, analogous to the embodiment of Figures 3a and 3b.
  • the screw 1'" has a further thickening 6" in the rear part of the area 7 with the thread 3 in the transition to the shaft 9.
  • the screw 1 '" has a further, third thickening 6'", which is arranged centrally in the area 7 with the thread 3.
  • This embodiment therefore has a total of three thickenings 6', 6", 6"'.
  • the third thickening 6'" extends in the direction of the longitudinal axis L along a length a" and widens conically towards the tip 4 in a v'.
  • the angle v' is 5-30 °.
  • the angle v' is the angle between the extensions of the outer contour of the further thickening 6'".
  • the third thickening 6'" has a maximum diameter of D3 ' at the widest point. Diameter D3 ' is larger than diameter D l of area 7. In addition, at the front end of the third thickening 6'" there is a step 8'" which runs perpendicular to the longitudinal axis L of the screw 1'". The maximum diameter D3' is located at this step 8'".

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)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne une vis comportant un filet et une pointe conique, une tige cylindrique étant formée directement derrière la pointe, et une partie plus épaisse étant présente derrière la tige.
PCT/EP2023/078976 2022-10-27 2023-10-18 Vis WO2024088846A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP22204159.2A EP4361459A1 (fr) 2022-10-27 2022-10-27 Vis
EP22204159.2 2022-10-27
EP22214057.6 2022-12-16
EP22214057.6A EP4361460A1 (fr) 2022-10-27 2022-12-16 Vis

Publications (1)

Publication Number Publication Date
WO2024088846A1 true WO2024088846A1 (fr) 2024-05-02

Family

ID=88413662

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/078976 WO2024088846A1 (fr) 2022-10-27 2023-10-18 Vis

Country Status (1)

Country Link
WO (1) WO2024088846A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2382019A (en) * 1944-05-02 1945-08-14 Miller Edwin August Compound screw
EP0060441A1 (fr) * 1981-03-13 1982-09-22 Häfele KG Dispositif de connexion d'une pair de plaques de bois, de copeaux de bois et analogues, disposées perpendiculairement l'une à l'autre
EP2150709B1 (fr) * 2007-05-11 2011-07-06 Adolf Würth GmbH & Co. KG Vis pour panneaux de particules
WO2019016092A1 (fr) * 2017-07-20 2019-01-24 Swg Schraubenwerk Gaisbach Gmbh Vis à bois
WO2019086091A1 (fr) * 2017-11-01 2019-05-09 Dissing A/S Vis à tête de vis effilée, utilisation d'une vis et procédé de fraisage de la vis
EP3726072A1 (fr) * 2019-04-16 2020-10-21 SWG Schraubenwerk Gaisbach GmbH Vis pour matériau à base de bois

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2382019A (en) * 1944-05-02 1945-08-14 Miller Edwin August Compound screw
EP0060441A1 (fr) * 1981-03-13 1982-09-22 Häfele KG Dispositif de connexion d'une pair de plaques de bois, de copeaux de bois et analogues, disposées perpendiculairement l'une à l'autre
EP2150709B1 (fr) * 2007-05-11 2011-07-06 Adolf Würth GmbH & Co. KG Vis pour panneaux de particules
WO2019016092A1 (fr) * 2017-07-20 2019-01-24 Swg Schraubenwerk Gaisbach Gmbh Vis à bois
WO2019086091A1 (fr) * 2017-11-01 2019-05-09 Dissing A/S Vis à tête de vis effilée, utilisation d'une vis et procédé de fraisage de la vis
EP3726072A1 (fr) * 2019-04-16 2020-10-21 SWG Schraubenwerk Gaisbach GmbH Vis pour matériau à base de bois

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