EP3666470A1 - Outil de fixation - Google Patents

Outil de fixation Download PDF

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Publication number
EP3666470A1
EP3666470A1 EP18211930.5A EP18211930A EP3666470A1 EP 3666470 A1 EP3666470 A1 EP 3666470A1 EP 18211930 A EP18211930 A EP 18211930A EP 3666470 A1 EP3666470 A1 EP 3666470A1
Authority
EP
European Patent Office
Prior art keywords
press
fastening tool
workpiece
driving direction
tool according
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Withdrawn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
EP18211930.5A
Other languages
German (de)
English (en)
Inventor
Thomas Foser
Andrew Edward Kimber
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Priority to EP18211930.5A priority Critical patent/EP3666470A1/fr
Priority to PCT/EP2019/082446 priority patent/WO2020120118A1/fr
Priority to TW108144726A priority patent/TW202022201A/zh
Publication of EP3666470A1 publication Critical patent/EP3666470A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C7/00—Accessories for nailing or stapling tools, e.g. supports

Definitions

  • a fastening tool for driving fastening elements in a driving direction into a workpiece, comprising a housing and a press-on element having a press-on face, wherein the press-on element is displaceable with respect to the housing against the driving direction when the fastening tool is pressed against the workpiece in the driving direction. Also described herein are associated parts and methods of use thereof.
  • One such application is joining two elements by driving a fastening element into one or both of the elements, thereby using a fastening tool as mentioned above.
  • the fastening tool is pressed against one of the elements, hereinafter referred to as a workpiece, then a driving mechanism is triggered which may drive a driving element onto the fastening element to drive the fastening element into the workpiece.
  • a driving mechanism is triggered which may drive a driving element onto the fastening element to drive the fastening element into the workpiece.
  • the workpiece may move back and thus require support from behind.
  • the fastening tool may provide such a support.
  • driving mechanisms are known to be used in fastening tools, comprising for example: combustion of explosive powder or fluid/gaseous combustibles, compressed air, spring drives, flywheels, electromagnetic drives, screwing, and combinations thereof. Any of those driving mechanisms are known to be used in portable hand-held fastening tools.
  • One constraint with workpiece support relates to dimensional size. If a fastening tool provides for support of the workpiece, it may be an object to accommodate workpieces of different sizes within the same tool. It should also be appreciated that there are applications when the workpieces have different cross-sectional area, different shape, or different grades of material.
  • a fastening tool provides for support of the workpiece, it may employ some support structure arranged in front of a tool nose. Such a support structure could reduce accessibility of an area of the tool nose and make handling the fastening tool more difficult. It should also be appreciated that there are applications when the tool nose needs to be removed from the remaining fastening tool, such as replacing the driving element or other maintenance or repair work.
  • a fastening tool for driving fastening elements in a driving direction into a workpiece comprising a housing and a press-on element having a press-on face, wherein the press-on element is displaceable with respect to the housing against the driving direction when the fastening tool is pressed against the workpiece in the driving direction, the fastening tool further comprising a press-on extension element extending in the driving direction behind the press-on face, wherein the press-on extension element is displaceable with respect to the press-on element against the driving direction when the fastening tool is pressed against the workpiece in the driving direction.
  • the fastening tool comprises a press-on spring biasing the press-on element in the driving direction with respect to the housing.
  • the fastening tool comprises a press-on extension spring biasing the press-on extension element in the driving direction with respect to the press-on element.
  • the press-on spring has a press-on spring stiffness, wherein the press-on extension spring has a press-on extension spring stiffness which is greater than the press-on spring stiffness.
  • the fastening tool comprises a support structure mounted to the housing and protruding in the driving direction behind the press-on face.
  • the support structure is displaceable with respect to the housing between a closed position and an open position.
  • the support structure comprises a support element for clasping the workpiece.
  • the support element comprises a support face supporting the workpiece against the driving direction during driving a fastening element into the workpiece.
  • the support structure comprises a support protrusion for engaging the workpiece, or a depression in the workpiece, wherein the support face is arranged on the support protrusion.
  • the support structure is displaceable in the driving direction with respect to the press-on element.
  • the fastening tool comprises a control element for controlling movement of the support structure with respect to the housing.
  • the control element comprises a lever hinged to the housing.
  • the control element comprises a grip.
  • the fastening tool comprises a driver and a driving device for driving the driver onto a fastening element to drive the fastening element into the workpiece.
  • the press-on element is displaceable up to a pressed-on position, wherein the press-on element releases a driving-in operation of the fastening tool if the press-on element is in the pressed-on position, and wherein the press-on element prevents a driving-in operation of the fastening tool if the press-on element is out of the pressed-on position.
  • the press-on element comprises a guide channel for guiding a fastening element when the fastening element is driven into the workpiece.
  • the press-on extension element comprises a sleeve guided on the press-on element.
  • Figs. 1 and 2 show a fastening tool 1 for driving fastening elements 2 along a setting axis 14 in a driving direction 3 into a workpiece 4.
  • the driving elements 2 are formed as nails.
  • the driving elements are formed as e.g. bolts, pins, clips, cranks or screws.
  • the fastening tool 1 comprises a driver 5 which is formed as e.g. a setting piston or screwdriver bit.
  • the fastening tool 1 comprises a housing 6 and, received in the housing 6, a schematically drawn driving device 7 for driving the driver 5 onto a fastening element 2 to drive the fastening element 2 into the workpiece 4.
  • the driving device 7 comprises e.g. a gas- or powder-actuated combustion drive, an air-pressure drive, or a spring-, flywheel or electrodynamic driven electric drive having, in particular, an electric motor and an electric battery.
  • the fastening tool 1 comprises a press-on element 8 having a press-on face 11 and which is displaceable against the driving direction 3 with respect to the housing 6.
  • the press-on element 8 is displaceable up to a pressed-on position shown in Figs. 1 and 2 . If the press-on element 8 is in the pressed-on position, it releases a driving-in operation of the fastening tool 1. If the press-on element 8 is out of the pressed-on position, the press-on element 8 prevents a driving-in operation of the fastening tool 1.
  • the press-on element 8 comprises a guide channel 9 in which a fastening element 2 is guided when driven into the workpiece 4.
  • the fastening tool comprises a separate guide channel extending along the press-on element in the driving direction.
  • the workpiece 4 is formed as a coupler sleeve for coupling elongated elements such as tubes or rods, e.g. reinforcing bars for concrete.
  • the workpiece 4 and/or the elements to be connected and/or the fastening elements are made of a metal, such as iron, or alloy, such as steel.
  • the fastening elements 2 are driven tangentially into a gap between an inner face of the workpiece 4 and an outer face of the elongated elements, such that the elongated elements are tightly connected to the workpiece 4.
  • the fastening elements 2 are pre-mounted to the workpiece 4, e.g. inserted in prefabricated holes, such as bores.
  • the fastening elements are fed one-by-one or collated to the guide channel.
  • the fastening tool may comprise a magazine opening out into the guide channel.
  • the fastening tool 1 comprises a support structure 12 mounted to the housing 6 and protruding in the driving direction 3 behind the press-on face 11.
  • the support structure 12 is displaceable in the driving direction 3 with respect to the housing 6 between a closed position and an open position.
  • the support structure 12 comprises a support element 10 for clasping the workpiece 4.
  • the support element 10 comprises a support protrusion 13 for engaging one of two depressions 15 in the workpiece 4.
  • a support face 16 supporting the workpiece 4 against the driving direction 3 during driving a fastening element 2 into the workpiece 4 is arranged on the support protrusion 13. A safe pressing the fastening tool 1 against the workpiece 4 is thus ensured.
  • the support structure 12 is also displaceable in the driving direction 3 with respect to the press-on element 8.
  • the fastening tool 1 comprises a control element 17 for controlling movement of the support structure 12 with respect to the housing 6.
  • the control element 17 comprises two levers 18 hinged to the housing 6, and a grip 19.
  • the fastening tool 1 comprises a press-on extension element 20 extending in the driving direction 3 behind the press-on face 11 (not shown in Fig. 2 ) and comprising a sleeve 21 guided on the press-on element 8, and a flange 22.
  • An extension press-on face 23 is formed as a front face of the press-on extension element 20 pointing in the driving direction 3.
  • the press-on extension element 20 is displaceable with respect to the press-on element 8 against the driving direction 3 when the fastening tool 1 is pressed against the workpiece 4 in the driving direction 3.
  • the fastening tool 1 further comprises a press-on spring 24 biasing the press-on element 8 in the driving direction 3 with respect to the housing 6.
  • the fastening tool 1 further comprises a press-on extension spring 25 biasing the press-on extension element 20 in the driving direction 3 with respect to the press-on element 8.
  • a rear end of the press-on extension spring 24 bears against the press-on element 8 and a front end of the press-on extension spring 24 bears against the press-on extension element 20, in particular the flange 22.
  • a spring stiffness of the press-on extension spring 25 is greater than a spring stiffness of the press-on spring 24.
  • a user In order to drive a fastening element 2 into the workpiece 4, a user approaches the workpiece 4 with the fastening tool 1, wherein the support structure 12 is in its open position, such that the support element 10 clasps the workpiece 4 and the support protrusion is inserted into the depression 15 of the workpiece 4. The user then pulls the grip 19 of the control element 17 against the driving direction such that the support structure 12 is moved against the driving direction 3 with respect to the housing 6, thus reducing a distance between the support face 16 and the press-on element 8 and/or the press-on extension element 20 which then are put over a fastening element 2.
  • the press-on extension element 20 extends in the driving direction 3 behind the press-on face 11 of the press-on element 8, the extension press-on face 23 abuts the workpiece 4 at first.
  • the press-on extension element 20 is thus moved against the driving direction 3 with respect to the press-on element 8 against the press-on spring 24.
  • the press-on element 8 is moved against the driving direction 3 with respect to the housing 6 against the press-on extension spring 25. Since the press-on extension spring 25 has a greater spring stiffness than the press-on spring 24, the press-on spring 24 will be more compressed than the press-on extension spring 25.
  • the press-on extension element 20 is further moved against the driving direction 3 until the support structure reaches its closed position (shown in Figs. 1 and 2 ). It is to be noted that now the press-on extension element 20 is pressed on the workpiece 4. Depending on a size, such as a diameter, of the workpiece 4, the press-on element 8 may also be pressed on the workpiece 4 (as shown in Fig. 2 ). In not-shown embodiments comprising a smaller workpiece than that shown in Figs. 1 and 2 , only the press-on extension element 20 may be pressed on the workpiece.
  • the press-on extension element 20 compensates for different sizes of workpieces. It ensures that the press-on element 8 will reach the pressed-on position for several different sizes of workpieces.
  • the fastening tool 1 is now ready to drive the fastening element 2, which is now arranged within the guide channel 9, into the workpiece 4.
  • the user may push the control element 17 in the driving direction 3 back to its open position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP18211930.5A 2018-12-12 2018-12-12 Outil de fixation Withdrawn EP3666470A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP18211930.5A EP3666470A1 (fr) 2018-12-12 2018-12-12 Outil de fixation
PCT/EP2019/082446 WO2020120118A1 (fr) 2018-12-12 2019-11-25 Outil de fixation
TW108144726A TW202022201A (zh) 2018-12-12 2019-12-06 緊固工具

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18211930.5A EP3666470A1 (fr) 2018-12-12 2018-12-12 Outil de fixation

Publications (1)

Publication Number Publication Date
EP3666470A1 true EP3666470A1 (fr) 2020-06-17

Family

ID=64665014

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18211930.5A Withdrawn EP3666470A1 (fr) 2018-12-12 2018-12-12 Outil de fixation

Country Status (3)

Country Link
EP (1) EP3666470A1 (fr)
TW (1) TW202022201A (fr)
WO (1) WO2020120118A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1699519A (en) * 1927-01-24 1929-01-22 American Car & Foundry Co Nailing attachment for mechanical hammers
US4519536A (en) * 1984-03-01 1985-05-28 Steigauf William A Apparatus for driving nails using an impact hammer
US20020038812A1 (en) * 2000-09-29 2002-04-04 Joachim Thieleke Setting tool
US20170297188A1 (en) * 2016-04-15 2017-10-19 Everwin Pneumatic Corp. Clamping device for a nail gun
WO2018048315A1 (fr) 2016-09-12 2018-03-15 Holmes Solutions Limited Partnership Dispositif de couplage, pièces associées et leur procédé d'utilisation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1699519A (en) * 1927-01-24 1929-01-22 American Car & Foundry Co Nailing attachment for mechanical hammers
US4519536A (en) * 1984-03-01 1985-05-28 Steigauf William A Apparatus for driving nails using an impact hammer
US20020038812A1 (en) * 2000-09-29 2002-04-04 Joachim Thieleke Setting tool
US20170297188A1 (en) * 2016-04-15 2017-10-19 Everwin Pneumatic Corp. Clamping device for a nail gun
WO2018048315A1 (fr) 2016-09-12 2018-03-15 Holmes Solutions Limited Partnership Dispositif de couplage, pièces associées et leur procédé d'utilisation

Also Published As

Publication number Publication date
TW202022201A (zh) 2020-06-16
WO2020120118A1 (fr) 2020-06-18

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