EP0156681B1 - Outil de serrage pour boulonnerie - Google Patents

Outil de serrage pour boulonnerie Download PDF

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Publication number
EP0156681B1
EP0156681B1 EP85400320A EP85400320A EP0156681B1 EP 0156681 B1 EP0156681 B1 EP 0156681B1 EP 85400320 A EP85400320 A EP 85400320A EP 85400320 A EP85400320 A EP 85400320A EP 0156681 B1 EP0156681 B1 EP 0156681B1
Authority
EP
European Patent Office
Prior art keywords
tool
profile
bearing surface
contact
curvature
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.)
Expired
Application number
EP85400320A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0156681A1 (fr
Inventor
Michel Dossier
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 EP0156681A1 publication Critical patent/EP0156681A1/fr
Application granted granted Critical
Publication of EP0156681B1 publication Critical patent/EP0156681B1/fr
Expired 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
    • 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 drive tools for threaded bolts such as sockets, pipe wrenches, eye wrenches and the like.
  • the bearing surfaces are flat and make an angle of 108 ° with the diametral plane passing through the edge, projecting into the opening, according to which two adjacent bearing surfaces intersect.
  • the object of the invention is to provide a tool of the kind defined above which avoids the drawbacks of the prior tool by allowing suitable adaptation to bolting objects whose dimensions correspond to the whole range of tolerances allowed by standardization.
  • the profile of the bearing surfaces is an arc of a circle.
  • This particular shape makes it easier to manufacture the tool, notably by cold striking.
  • Fig. 1 there is shown a portion 1 of bolting tool having a central opening 2 of center 0 and whose inscribed polygon Pl is hexagonal. It is therefore a so-called "six-point" tool.
  • the opening 2 is defined by a groove 3 which in the example shown is of cylindrical shape circular and symmetrical with respect to the plane ps passing through the axis of the tool (point 0) and the vertex considered of the polygon inscribed Pl.
  • This groove 3 which may have a shape other than that shown provided that it constitutes a sufficiently cavity deep is provided to always clear the edge of the bolting object to be tightened.
  • the cylindrical surface of the groove 3 is connected to a bearing surface 4 whose curvature is defined by a curve TI according to the characteristics of the invention.
  • This bearing surface 4 is itself connected to a flat surface 5 coinciding with the corresponding side of the inscribed polygon PI.
  • Fasteners such as screws, nuts, bolts, etc. being manufactured with a nominal dimension to which is assigned a standard tolerance range
  • the dimension on plates of such an object can vary between this dimension a and a value a-t, t being the maximum tolerance allowed.
  • Pl t the hexagon corresponding to the dimension on flats of the lowest value of the tolerance range.
  • the profile of the curve TI is characterized by two parameters which are respectively the radius of curvature R at the point of contact with the inscribed polygon and the distance x (offset) from the center of curvature B at this point to the mediator plane MS of dish of hexagon inscribed Pl, it being understood that:
  • center of curvature B at this point of the curve TI is a point located in a UVWX zone, the position of this point being chosen according to several criteria including in particular the elastic resistance to compression of the materials used.
  • the profile is preferably in an arc, which is the case in the example of FIG. 1.
  • the essential aim of the invention being to reduce the forces supported by the tool, in order to increase its robustness or to make it exert higher tightening or loosening torques for equal dimensions, it is important to reduce the force N that we have just defined and therefore increase the lever arm x. Indeed, for a given torque, it is thus possible to reduce the external dimensions of the tool, making it better able to tighten or loosen inaccessible bolting objects.
  • the distance x a maximum value in the most unfavorable case which is that shown in Fig. 1 in bold lines. (Dimension on flats has the highest), it being understood that the range of tolerances affecting the dimensions of the tool itself is neglected here.
  • the choice of the length of the lever arm x is also limited by the other extreme case which may occur, namely when the dimension on dishes is equal to a-t . Indeed, it is necessary in this case that the bearing surface remains in contact with the flat of the bolting object at a point which, taking into account a safety margin, is at a certain distance from the edge of the object.
  • Fig. 2 represents an example of application of the invention to an eye wrench 6 comprising a handle 7 and an opening 8 defined by grooves 9, the bearing surfaces 10 according to the invention and planar surfaces 11.
  • FIG. 3 there is shown the diagram corresponding to a tool whose inscribed polygon has 12 vertices.
  • Each bearing surface 4 is in this case connected by an edge 12 to a bearing surface 4s which is symmetrical to it and which is connected to the groove of the next vertex of the dodecagon.
  • the centers of curvature B and Bs of each of the curves TI and T s i s are then located on either side and at equal distance from a straight line which is offset by 15 ° with respect to the diameters passing through the adjacent vertices of the dodecagon.
  • Fig. 4 shows an eye wrench in which the diagram of FIG. 3 is implemented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Mounting Of Bearings Or Others (AREA)
EP85400320A 1984-02-24 1985-02-21 Outil de serrage pour boulonnerie Expired EP0156681B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8402888A FR2560099B1 (fr) 1984-02-24 1984-02-24 Outil de serrage pour boulonnerie
FR8402888 1984-02-24

Publications (2)

Publication Number Publication Date
EP0156681A1 EP0156681A1 (fr) 1985-10-02
EP0156681B1 true EP0156681B1 (fr) 1988-01-13

Family

ID=9301391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85400320A Expired EP0156681B1 (fr) 1984-02-24 1985-02-21 Outil de serrage pour boulonnerie

Country Status (5)

Country Link
US (1) US4581957A (es)
EP (1) EP0156681B1 (es)
DE (1) DE3561378D1 (es)
ES (1) ES284624Y (es)
FR (1) FR2560099B1 (es)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014115906B3 (de) * 2014-10-31 2015-09-24 Gedore-Werkzeugfabrik Gmbh & Co. Kg Verfahren zur Herstellung eines Schraubwerkzeuges für Gewindebolzen und/oder Muttern
USD749385S1 (en) 2014-08-13 2016-02-16 Ideal Industries, Inc. Open end of a wrench head
USD758815S1 (en) 2014-08-13 2016-06-14 Ideal Industries, Inc. Socket

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5219392A (en) * 1985-12-18 1993-06-15 Josef Ruzicka Rotary wrenching tool
EP0525356B1 (en) * 1985-12-18 1998-10-21 Josef Ruzicka Wrenching tool
US4930378A (en) * 1988-04-22 1990-06-05 David S. Colvin Wrench opening engagement surface configuration
US4882957A (en) * 1988-12-16 1989-11-28 Wright Tool Company Socket wrench opening
US5012706A (en) * 1988-12-16 1991-05-07 Wright Tool Company Socket wrench opening
FR2674166B1 (fr) * 1991-03-18 1995-08-04 Wright Tool Cy Ouverture de cle a douille.
US5092203A (en) * 1991-04-23 1992-03-03 Easco Hand Tools, Inc. Wrench openings
US5406868A (en) * 1991-11-25 1995-04-18 Stanley-Proto Industrial Tools, Div. Of Mechanics Tools Open end wrench
US5205938A (en) * 1992-03-12 1993-04-27 Pall Corporation Polyester bag filter
FR2703619B1 (fr) * 1993-04-07 1995-07-07 Facom Outil de serrage/desserrage d'un organe filete.
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
USD431432S (en) * 1997-12-03 2000-10-03 Chih-Ching Hsieh Wrench
SE9704748L (sv) * 1997-12-19 1999-06-20 Sandvik Ab Verktyg för överföring av vridmoment till fästelement som muttrar och bultar
CA2234179C (en) * 1998-04-07 2001-05-15 Bobby Hu Rotary wrenching tool
US6354175B1 (en) * 1999-02-08 2002-03-12 Black & Decker Inc. Nutsetter
FR2800311B1 (fr) * 1999-11-02 2002-01-18 Facom Outil de serrage/desserage a profil asymetrique
US6269717B1 (en) 2000-05-08 2001-08-07 Robert A. Bollinger Multi-sized tool adapter
US7249949B2 (en) * 2004-06-29 2007-07-31 Lifecore Biomedical, Inc. Internal connection dental implant
ES2307352B1 (es) * 2005-04-12 2009-09-18 Bti, I+D, S.L. Implante dental y piezas destinadas a ser conectadas a un implante dental, y la conexion interna entre el implante dental y cada pieza.
US7225710B2 (en) * 2005-05-27 2007-06-05 Synthes Gmbh Combination driver and combination fastener
DE102005040587A1 (de) * 2005-08-22 2007-03-01 MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG Schnittstelle
US20080196562A1 (en) * 2007-02-16 2008-08-21 Asif Elliston Nut driver and method of making the same
EP2085041B1 (fr) * 2008-01-29 2010-10-06 Hader SA Outil dynamometrique a usage medical
US8899134B2 (en) * 2012-08-29 2014-12-02 Kluhsman Machine, Inc. High-efficiency wheel lug nut socket for use in automotive racing pits
US11806843B2 (en) 2013-11-15 2023-11-07 Snap-On Incorporated Socket drive improvement
US9718170B2 (en) * 2013-11-15 2017-08-01 Snap-On Incorporated Socket drive improvement
US11234899B2 (en) 2017-05-11 2022-02-01 Scalpal Llc Grasping facilitators and uses thereof and kits involving the same
US9845861B1 (en) * 2016-05-26 2017-12-19 GM Global Technology Operations LLC Rotatable assembly including a coupling interface
US11969864B2 (en) 2017-05-11 2024-04-30 Scalpal Llc Multi-tier torque enhancer driver and/or receiver and method of using same
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
CA3139388A1 (en) * 2019-05-09 2020-11-12 Grip Holdings Llc Anti-slip torque tool with integrated engagement features

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125910A (en) * 1964-03-24 Kavalar
US2969250A (en) * 1959-01-05 1961-01-24 Standard Pressed Steel Co Socket drive
SE325210B (es) * 1967-05-03 1970-06-22 R Wurscher
US3742652A (en) * 1970-03-06 1973-07-03 Black & Decker Mfg Co Drill sharpener
US3908488A (en) * 1973-10-01 1975-09-30 Alfred Frederick Andersen Minimum stressed wrench
US4016680A (en) * 1974-04-01 1977-04-12 The Black And Decker Manufacturing Company Sharpener for twist drills including grinding wheel dressing means

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD749385S1 (en) 2014-08-13 2016-02-16 Ideal Industries, Inc. Open end of a wrench head
USD758815S1 (en) 2014-08-13 2016-06-14 Ideal Industries, Inc. Socket
DE102014115906B3 (de) * 2014-10-31 2015-09-24 Gedore-Werkzeugfabrik Gmbh & Co. Kg Verfahren zur Herstellung eines Schraubwerkzeuges für Gewindebolzen und/oder Muttern
EP3017914A1 (de) 2014-10-31 2016-05-11 Gedore-Werkzeugfabrik GmbH & Co. KG Verfahren zur herstellung eines schraubwerkzeuges für gewindebolzen und/oder muttern

Also Published As

Publication number Publication date
US4581957A (en) 1986-04-15
ES284624U (es) 1985-08-01
ES284624Y (es) 1986-04-16
FR2560099B1 (fr) 1986-10-24
EP0156681A1 (fr) 1985-10-02
DE3561378D1 (en) 1988-02-18
FR2560099A1 (fr) 1985-08-30

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