EP3825064A1 - Procédé de vissage d'une vis à béton autotaranteuse - Google Patents

Procédé de vissage d'une vis à béton autotaranteuse Download PDF

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Publication number
EP3825064A1
EP3825064A1 EP20206069.5A EP20206069A EP3825064A1 EP 3825064 A1 EP3825064 A1 EP 3825064A1 EP 20206069 A EP20206069 A EP 20206069A EP 3825064 A1 EP3825064 A1 EP 3825064A1
Authority
EP
European Patent Office
Prior art keywords
concrete
screw
clutch release
screw head
fit coupling
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.)
Pending
Application number
EP20206069.5A
Other languages
German (de)
English (en)
Inventor
Antonio Tresoldi
Michele MARTINI
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 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 GmbH and Co KG filed Critical Fischerwerke GmbH and Co KG
Publication of EP3825064A1 publication Critical patent/EP3825064A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/002—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose for special purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0064—Means for adjusting screwing depth

Definitions

  • the invention relates to a method for screwing a self-tapping concrete screw into a threadless screw hole in concrete with the features of claim 1.
  • Self-tapping concrete screws are - normally with the help of a pneumatic or electric impact screwdriver - screwed into a, for example, drilled, cylindrical screw hole in concrete, whereby the concrete screws cut a mating thread in the screw hole itself.
  • an additional concrete layer is applied to this structure.
  • the concrete layer typically has reinforcement and is used in particular to carry away an increased bending load in the sense of a higher load-bearing capacity of the structure. So that there can be a transmission of force, in particular a transmission of shear forces, between the structure and the new concrete layer, a large number of concrete screws are often screwed into the structure. The concrete screws are not screwed in completely, but in such a way that the screw head clearly protrudes from the structure. The subsequently applied concrete layer can thereby encompass the screw head and the concrete screw can transfer forces between the structure and the new concrete layer.
  • the object of the invention is to propose a method for screwing a self-tapping concrete screw into concrete with a fixed protrusion of the screw from the concrete and a fixed distance of a screw head from the concrete.
  • the method according to the invention uses a rotary drive tool with a form-fit coupling and a clutch release.
  • the form-fit coupling has, for example, a hexagon socket, such as a pipe wrench or a socket, to match a hexagon screw head of the concrete screw.
  • Other form-fit couplings, suitable for a different screw head, are possible.
  • the form-fit coupling can be attached non-rotatably to the screw head of the concrete screw by means of a form-fit connection, so that the screw can be driven to rotate by rotating the form-fit coupling.
  • the clutch release mechanism ensures a (minimum) distance between the form-fit coupling and the concrete with the screw hole into which the concrete screw is screwed.
  • the distance can be fixed or adjustable.
  • the form-fit coupling is attached to the screw head of the concrete screw in such a way that it is rotationally fixed to the screw head by means of a form fit.
  • the screw is driven in rotation and screwed into the screw hole by means of the rotary drive of the form-fit coupling, preferably in connection with an axial pressure or axial feed, whereby it cuts a mating thread in the screw hole itself.
  • the clutch release comes into contact with the concrete and holds the form-fit coupling at the specified or adjustable distance from the concrete, so that if the rotary drive continues, the form-fit coupling disengages from the screw head, thereby ending the screwing-in process.
  • the concrete screw protrudes from the concrete by a fixed or adjustable amount and the screw head has a fixed or adjustable distance from the concrete.
  • the method according to the invention enables concrete screws to be screwed into screw holes in concrete, all screws projecting equally far from the concrete.
  • One embodiment of the invention provides a tubular clutch release device with an axial stop for the form-fit coupling, which keeps the form-fit coupling at the (minimum) distance from the concrete.
  • the axial stop of the clutch release keeps the form-fit coupling of the rotary drive tool at least at the specified or set distance from the concrete; a greater distance between the form-fit coupling and the concrete is possible.
  • the tubular clutch release device can have a groove running around an inner circumference on the inside, in which a locking ring is arranged which protrudes inwardly beyond the inner circumference of the clutch release device.
  • the retaining ring forms the axial stop of the clutch release for the form-fit coupling, which ensures the axial distance between the form-fit coupling and the concrete.
  • sockets are also known as "socket wrenches".
  • socket wrenches For example, for a hexagon screw head, the socket has a matching hexagon socket.
  • a suitable socket is selected for other screw heads.
  • the socket On one drive side, the socket has, for example, a standardized internal square with a width across flats of, for example, 1 inch or larger or smaller than its rotary drive. The socket enables a rotary drive with, for example, a rotary impact wrench in a simple manner.
  • the rotary drive tool 1 shown in the drawing is used to screw a self-tapping concrete screw 2 into a cylindrical screw hole 3 in concrete 4.
  • the concrete screw has a hexagonal screw head 5.
  • the rotary drive tool 1 has a socket 6 as a form-fit coupling 7 and a tubular sleeve as a clutch release 8.
  • the socket 6 On a drive side, the socket 6 has a standardized internal square 9 with a width across flats of, for example, one inch, with which the socket 6 can be placed on a suitable external square, for example a compressed air or electric impact screwdriver, not shown, and driven in rotation.
  • the socket 6 - matching the hexagon screw head 5 of the concrete screw 2 - has a hexagon socket 10.
  • a suitable, different socket must be selected for a different screw head (not shown).
  • the socket 6 forming the form-fit coupling 7 of the rotary drive tool 1 can be placed on the screw head 5 of the concrete screw 2 or placed axially on the screw head 5 in such a way that it is non-rotatably with the screw head 5 due to a form fit.
  • the clutch release 8 is a tubular sleeve in which the socket 6 forming the form-locking clutch 7 is received in a rotatable and axially displaceable manner.
  • the clutch release 8 has a circumferential groove on the inside on an inner circumference, into which a locking ring 11 is inserted.
  • Such retaining rings 11 are also referred to as spring rings.
  • the locking ring 11 protrudes approximately half a diameter inward over the inner circumference of the tubular clutch release 8 and forms an axial stop 12 for the socket 6 which forms the form-fit coupling 7 and which has an annular step 13 on its outer circumference for this purpose.
  • the rotary drive tool 1 is used as in FIG Figure 2 to see with its the form-fitting coupling 7 forming socket 6 axially so on
  • the screw head 5 of the concrete screw 2 is placed so that the hexagon socket 10 engages the screw head 5 in a rotationally fixed manner by means of a form fit.
  • the placing of the socket 6 on the screw head 5 can generally also be understood as placing the form-fit coupling 7 on the screw head 5.
  • the tubular clutch release 8 encloses the socket 6 forming the form-fit coupling 7, the screw head 5 and, to a certain extent, a shaft of the concrete screw 2.
  • the concrete screw 2 is screwed into the screw hole 3 in the concrete 4 by a rotary drive of the socket 6 forming the form-fit coupling 7 with, for example, the impact wrench (not shown).
  • an axial force is preferably exerted on the form-fit coupling 7 in the direction of the screw hole 3.
  • the clutch release 8 terminates an axial movement of the socket 6 forming the form-locking clutch 7 in the direction of the concrete 4 when the clutch release 8 is in contact with the concrete 4 and the ring step 13 of the socket 6 is in contact with the internally protruding locking ring 11 in the tubular clutch release 8 arrives, the locking ring 11 forming the axial stop 12 and together with the clutch release 8 a spacer for the socket 6 from the concrete 4.
  • the screw head 5 of the concrete screw 2 which is screwed further into the screw hole 3, emerges from the hexagon socket 10 of the socket 6, i.e.
  • the clutch release 8 disengages the positive coupling 7 of the rotary drive tool 1 from the screw head 5 the concrete screw 2, with which the screwing of the concrete screw 2 into the screw hole 3 in the concrete 4 is completed.
  • the "disengaging" of the form-fit coupling 7 from the screw head 5 is shown Figure 3 .
  • the screw head 5 is at a distance from the concrete 4 which is defined by the clutch release 8.
  • the concrete screw 2 protrudes from the concrete 4 by an amount determined by the clutch release 8.
  • a plurality of concrete screws 2 are preferably screwed into screw holes 3 in the concrete 4, all of which protrude equally far from the concrete 4.
  • Further concrete is poured, which can also be referred to as “top concrete” (not shown).
  • top concrete By protruding from the existing concrete 4 concrete screws 2 a shear-proof connection of the Not shown, top concrete with the existing concrete 4 and a connection against lifting of the top concrete from the existing concrete 4 is achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
EP20206069.5A 2019-11-21 2020-11-06 Procédé de vissage d'une vis à béton autotaranteuse Pending EP3825064A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019131455.0A DE102019131455A1 (de) 2019-11-21 2019-11-21 Verfahren zum Einschrauben einer selbstschneidenden Betonschraube

Publications (1)

Publication Number Publication Date
EP3825064A1 true EP3825064A1 (fr) 2021-05-26

Family

ID=73172471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20206069.5A Pending EP3825064A1 (fr) 2019-11-21 2020-11-06 Procédé de vissage d'une vis à béton autotaranteuse

Country Status (2)

Country Link
EP (1) EP3825064A1 (fr)
DE (1) DE102019131455A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0284894A1 (fr) * 1987-03-24 1988-10-05 Pat Ag Dispositif de fixation avec vis et outil à chocs pour fixations universelles
WO2016139095A2 (fr) * 2015-03-02 2016-09-09 Hilti Aktiengesellschaft Dispositif de vissage et vis

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0284894A1 (fr) * 1987-03-24 1988-10-05 Pat Ag Dispositif de fixation avec vis et outil à chocs pour fixations universelles
WO2016139095A2 (fr) * 2015-03-02 2016-09-09 Hilti Aktiengesellschaft Dispositif de vissage et vis

Also Published As

Publication number Publication date
DE102019131455A1 (de) 2021-05-27

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