EP0630722A1 - Werkzeug zum Anziehen/Lösen von mit Gewinde versehenen Befestigungsmitteln - Google Patents

Werkzeug zum Anziehen/Lösen von mit Gewinde versehenen Befestigungsmitteln Download PDF

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Publication number
EP0630722A1
EP0630722A1 EP94400624A EP94400624A EP0630722A1 EP 0630722 A1 EP0630722 A1 EP 0630722A1 EP 94400624 A EP94400624 A EP 94400624A EP 94400624 A EP94400624 A EP 94400624A EP 0630722 A1 EP0630722 A1 EP 0630722A1
Authority
EP
European Patent Office
Prior art keywords
tool
arc
tool according
profile
loosening
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.)
Granted
Application number
EP94400624A
Other languages
English (en)
French (fr)
Other versions
EP0630722B1 (de
Inventor
Jean-Paul Zerkovitz
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.)
Facom SA
Original Assignee
Facom SA
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 Facom SA filed Critical Facom SA
Publication of EP0630722A1 publication Critical patent/EP0630722A1/de
Application granted granted Critical
Publication of EP0630722B1 publication Critical patent/EP0630722B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B25B15/00—Screwdrivers
    • B25B15/001—Screwdrivers characterised by material or shape of the tool bit
    • B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
    • B25B15/008—Allen-type keys
    • 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/02—Spanners; Wrenches with rigid jaws
    • B25B13/04—Spanners; Wrenches with rigid jaws of ring jaw type
    • 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/02—Spanners; Wrenches with rigid jaws
    • B25B13/06—Spanners; Wrenches with rigid jaws of socket type
    • B25B13/065—Spanners; Wrenches with rigid jaws of socket type characterised by the cross-section of the socket

Definitions

  • the present invention relates to a tool for tightening / loosening a driven threaded member comprising a polygonal driven profile, of the type comprising an active head whose section has a roughly polygonal shape.
  • the invention applies equally to female tools intended to drive a male nut, as to male tools intended to drive a screw whose head has a polygonal recess.
  • the tools available have profiles that are roughly polygonal and symmetrical with respect to the two directions of rotation. Consequently, a given stress undergone by the tool corresponds to the same torque and the same stress applied to the driven member, whether in the direction of tightening or in that of loosening.
  • the numerous profiles proposed for the tightening / loosening tools aim to obtain a compromise as judicious as possible between, on the one hand, the stress induced in the male element, and, on the other hand, the burst stress of the female profile, in particular when the latter is the profile of the tool.
  • the object of the invention is to provide a tool which is better suited to the different real needs of use.
  • the invention relates to a tool of the aforementioned type, characterized in that at least two sides of the section of the head of the tool are each formed of two half-sides of which the active zones are formed, for the two directions of rotation, of rounding or of sharp edges cooperating with planar faces of said polygonal profile, and have asymmetrical general shapes from one another with respect to the median axial plane on this side, so that, for a given torque applied to the tool, the stresses induced in the tool are less significant in a first direction than in the other while, conversely, the stresses induced in the driven member are greater in said first direction than in the other, which makes it possible to apply to the driven member a higher torque in said first direction than in the other direction before destruction of the tool head.
  • O denotes the center of the section of the head of the tool, which has a roughly hexagonal profile of which only around one third of the periphery has been shown.
  • a side 1 of the profile will be described, extending between two virtual corners and seen from point O at an angle of 60 ° delimited by two rays 2 and 3.
  • the profile has twelve rounded corners, defined as above by two arcs of a circle 4 and 9 of radius r1 and spaced angularly by 30 °. Between the right end of an arc 4 and the left end of the next arc 9, there are two straight segments: a segment 10 which connects to the arc 4 by an edge 11, and a segment 12 which is connected to the arc 9 by an edge 12A.
  • each side of the tool attacks the corresponding side of the nut by a point D of the arc of large radius 8 located in the vicinity of the left end of this arc.
  • a point E of the arc 5 near the right end of this arc which attacks the nut.
  • the clamping force F s is applied closer to the middle of the side , and is less inclined with respect to the bisector 7, than the loosening force F d . This results in a larger lever arm when loosening (D d ) than when tightening (D s ).
  • the greater inclination of the loosening force has the consequence that, for a given loosening torque exerted on the nut, the bursting force of the tool female is reduced.
  • the torque applicable to the nut is greater in the direction of loosening before destruction of the tool head by bursting.
  • the inclination of the force and the pressure of Hertz are greater than the loosening, and moreover, in the "minimum clearance" situation, the point of application of the force is more distant from the middle of the side during the loosening. Therefore, again, the applicable loosening torque is greater than the applicable tightening torque before destruction of the tool head, which means, before rounding off the polygonal profile of this tool.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Optical Transform (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
EP94400624A 1993-04-07 1994-03-23 Werkzeug zum Anziehen/Lösen von mit Gewinde versehenen Befestigungsmitteln Expired - Lifetime EP0630722B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9304142A FR2703619B1 (fr) 1993-04-07 1993-04-07 Outil de serrage/desserrage d'un organe filete.
FR9304142 1993-04-07

Publications (2)

Publication Number Publication Date
EP0630722A1 true EP0630722A1 (de) 1994-12-28
EP0630722B1 EP0630722B1 (de) 1997-10-08

Family

ID=9445858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94400624A Expired - Lifetime EP0630722B1 (de) 1993-04-07 1994-03-23 Werkzeug zum Anziehen/Lösen von mit Gewinde versehenen Befestigungsmitteln

Country Status (6)

Country Link
US (1) US5481948A (de)
EP (1) EP0630722B1 (de)
JP (1) JPH0752054A (de)
DE (1) DE69406053T2 (de)
ES (1) ES2109624T3 (de)
FR (1) FR2703619B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999011436A1 (de) * 1997-09-01 1999-03-11 Wera Werk Hermann Werner Gmbh & Co. Kraftübertragungsprofil, insbesondere an einem mehrkant-schraubwerkzeug

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5910197A (en) * 1997-07-30 1999-06-08 Hand Tool Design Corporation Wrench with supplementary driving lugs formed on its square cross-sectioned drive tang and interchangeable sockets therefor
SE511447C2 (sv) * 1997-12-19 1999-10-04 Kapman Ab Verktyg för vridning av sexkantiga muttrar och bultar
US6003411A (en) * 1998-02-02 1999-12-21 Snap-On Tools Company Cam-lobed salvage tool
US6698315B1 (en) 1998-04-13 2004-03-02 Wright Tool Company High torque wrenching system
US6354175B1 (en) * 1999-02-08 2002-03-12 Black & Decker Inc. Nutsetter
WO2000058056A1 (en) * 1999-03-31 2000-10-05 Wright Tool Company Asymmetrical fastening system
FR2800311B1 (fr) * 1999-11-02 2002-01-18 Facom Outil de serrage/desserage a profil asymetrique
US6634261B1 (en) * 2000-11-03 2003-10-21 Wendell Griffin Socket magazine
US6736580B2 (en) 2002-01-16 2004-05-18 Hi-Shear Corporation Lobed drive for hi-lite fastener
US6655888B2 (en) * 2002-01-16 2003-12-02 Hi-Shear Corporation Lobed drive for hi-lite fastener
US20140165791A1 (en) * 2012-12-17 2014-06-19 Chih-Hung Wu Wrench
JP6089826B2 (ja) * 2013-03-15 2017-03-08 アイシン・エィ・ダブリュ株式会社 工具ソケット
US10442059B2 (en) * 2013-03-15 2019-10-15 Wright Tool Company Socket with four point drive
US9718170B2 (en) 2013-11-15 2017-08-01 Snap-On Incorporated Socket drive improvement
US11806843B2 (en) 2013-11-15 2023-11-07 Snap-On Incorporated Socket drive improvement
US11154969B2 (en) 2016-04-27 2021-10-26 Grip Holdings Llc Fastener extractor device
USD758815S1 (en) 2014-08-13 2016-06-14 Ideal Industries, Inc. Socket
USD749385S1 (en) 2014-08-13 2016-02-16 Ideal Industries, Inc. Open end of a wrench head
US11590637B2 (en) 2017-04-27 2023-02-28 Grip Holdings Llc Methods and apparatuses for extracting and dislodging fasteners
US11897099B2 (en) 2018-09-19 2024-02-13 Grip Holdings Llc Fastener extractor and dislodging tool apparatus
US12023786B2 (en) 2017-02-15 2024-07-02 Grip Holdings Llc Multi-directional driver bit
US11602828B2 (en) 2019-07-30 2023-03-14 Grip Holdings Llc Multi-grip screw apparatus
RS62493B1 (sr) * 2017-03-23 2021-11-30 Grip Holdings Llc Nasadni ključ sa više držača
US11701757B2 (en) 2018-09-19 2023-07-18 Grip Holdings Llc Anti-slip fastener remover tool
USD1021584S1 (en) 2017-05-22 2024-04-09 Grip Holdings Llc Extractor socket
USD966063S1 (en) 2018-03-07 2022-10-11 Grip Holdings Llc Socket
US20190275646A1 (en) * 2018-03-12 2019-09-12 Ben Wen LIU Engagement structure for tool
US11161234B2 (en) 2018-03-15 2021-11-02 Grip Holdings Llc Tool holding apparatus
DE102018112068A1 (de) * 2018-05-18 2019-11-21 Wera Werkzeuge Gmbh Schraubwerkzeug zur Übertragung zwei fest eingestellter Drehmomente
USD888526S1 (en) 2018-09-04 2020-06-30 Snap-On Incorporated Hex driver
US10960520B2 (en) 2018-09-04 2021-03-30 Snap-On Incorporated Hex driver
US11780059B2 (en) * 2019-01-23 2023-10-10 Wright Tool Company Socket wrench opening
US11759918B2 (en) 2019-05-09 2023-09-19 Grip Holdings Llc Anti-slip torque tool with integrated engagement features
GB2622958B (en) * 2020-07-01 2024-08-28 Snap On Incorporated Socket drive improvement
USD1042059S1 (en) 2022-02-25 2024-09-17 Grip Holdings Llc Percussion drive
USD1026602S1 (en) 2022-03-17 2024-05-14 Grip Holdings Llc Selectable twist tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3903764A (en) * 1973-11-14 1975-09-09 Alfred Frederick Andersen Minimum stressed wrench
US3908488A (en) * 1973-10-01 1975-09-30 Alfred Frederick Andersen Minimum stressed wrench
EP0156681A1 (de) * 1984-02-24 1985-10-02 Facom Bolzenschraubgerät
US4930378A (en) * 1988-04-22 1990-06-05 David S. Colvin Wrench opening engagement surface configuration

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908488A (en) * 1973-10-01 1975-09-30 Alfred Frederick Andersen Minimum stressed wrench
US3903764A (en) * 1973-11-14 1975-09-09 Alfred Frederick Andersen Minimum stressed wrench
EP0156681A1 (de) * 1984-02-24 1985-10-02 Facom Bolzenschraubgerät
US4930378A (en) * 1988-04-22 1990-06-05 David S. Colvin Wrench opening engagement surface configuration

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999011436A1 (de) * 1997-09-01 1999-03-11 Wera Werk Hermann Werner Gmbh & Co. Kraftübertragungsprofil, insbesondere an einem mehrkant-schraubwerkzeug
US6263771B1 (en) 1997-09-01 2001-07-24 Wera-Werk Hermann Werner Gmbh & Co. Force transmission structure especially for a screwing wrench with multiple corners
DE19881551B4 (de) * 1997-09-01 2012-02-16 Wera-Werk Hermann Werner Gmbh & Co. Kg Kraftübertragungsprofil, insbesondere an einem Mehrkant-Schraubwerkzeug

Also Published As

Publication number Publication date
FR2703619A1 (fr) 1994-10-14
DE69406053T2 (de) 1998-02-26
EP0630722B1 (de) 1997-10-08
ES2109624T3 (es) 1998-01-16
FR2703619B1 (fr) 1995-07-07
US5481948A (en) 1996-01-09
DE69406053D1 (de) 1997-11-13
JPH0752054A (ja) 1995-02-28

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