EP1216120B1 - Drehantriebswerkzeug für eine schraubelement - Google Patents

Drehantriebswerkzeug für eine schraubelement Download PDF

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Publication number
EP1216120B1
EP1216120B1 EP00960781A EP00960781A EP1216120B1 EP 1216120 B1 EP1216120 B1 EP 1216120B1 EP 00960781 A EP00960781 A EP 00960781A EP 00960781 A EP00960781 A EP 00960781A EP 1216120 B1 EP1216120 B1 EP 1216120B1
Authority
EP
European Patent Office
Prior art keywords
head
component
rotation
tool according
manoeuvring
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 - Lifetime
Application number
EP00960781A
Other languages
English (en)
French (fr)
Other versions
EP1216120A1 (de
Inventor
Gérard Charles Camille BRIHIER
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 EP1216120A1 publication Critical patent/EP1216120A1/de
Application granted granted Critical
Publication of EP1216120B1 publication Critical patent/EP1216120B1/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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
    • B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
    • B25B23/1427—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by mechanical means
    • 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
    • B25B13/08—Spanners; Wrenches with rigid jaws of open jaw type

Definitions

  • the invention relates to a rotational drive tool for an organ screwing device, in particular a hand tool, of the type comprising a head presenting minus two gripping surfaces for driving the screwing member by complementarity, at least partial of form, and means of training in rotation of the head, the head behaving overall like a piece monobloc when driving in rotation of a screw member, the head comprising a bonding region of the gripping surfaces and parts of transmission to the gripping surfaces of a rotational force applied to the means of training, the connecting region being situated between the parts of transmission of effort and grip surfaces.
  • the invention applies, for example, to open-end wrenches.
  • the head of such a key has two open rigid jaws which each have a gripping surface for a screw member such as a nut.
  • the two gripping surfaces are facing each other.
  • the phenomenon therefore limits the value of couples that can be transmitted by such a fork open key.
  • This phenomenon is present from generally in the tools that do not allow, unlike by clamp pliers for example, clamping of the socket surfaces independent of the drive in rotation.
  • the invention aims to solve this problem by providing a tool of the aforementioned type allowing, for example, to exert on a screwdriver increased couples.
  • the subject of the invention is a tool of the aforementioned type, characterized in that the head is adapted so that the action of the drive means in rotation on the force transmission parts tends to deform elastically the geometry of the head to bring the gripping surfaces closer to one another when applying through the means of training a training effort in rotation of a screwing member.
  • head having at least two gripping surfaces for to rotate a screwing member by complementarity at least partial form "a head allowing the training of such an organ that their respective shapes, such as polygonal shapes, do not allow relative rotation.
  • the head also behaves functionally overall as a single piece of stiffness large enough for that, when used, the functional geometry of the head remains generally unchanged, except under the effect of deformation in charge and the compensation thereof according to the invention as will be described later.
  • FIG. 1 illustrates a flat open end wrench 1 ready to drive a nut 2 in rotation.
  • the key 1 essentially comprises a head 4 and a separate handle 5.
  • the head 4 which can be made of a less powerful material than steel and in particular of modulus of elasticity lower than 150 GigaPascal, has a H-shaped and comprises two rectilinear branches 6 longitudinal with respect to a central axis X-X.
  • the branches 6 are interconnected by a core 7 central and transverse.
  • Each branch 6 includes on both sides of the soul 7 a distal end region 8 (left in Fig. 1), and a region proximal end 9.
  • the core 7, integral with the branches 6, is relatively thin and elastically deformable at least in flexion.
  • the distal end regions or jaws 8 each have a flat surface 10 of engagement with the nut 2.
  • the gripping surfaces 10 are oriented towards the inside of the head 4 and face each other.
  • the core 7 because of its possibility of deformation, forms a means of orientation branches 6 one compared to each other.
  • branches 6 are movable in rotation relative to each other in the plane of Figures 1 and 4, on either side of a rest position, such represented in solid lines in FIG. 1 and in dashed lines in FIG.
  • This rest position corresponds to the case where no force is applied 6.
  • the branches are parallel to each other and parallel to the X-X axis.
  • the distal end 8 and proximal 9 regions can therefore respectively approaching and departing by bending deformation of the core 7.
  • branches 6 are movable between their rest position and a position in which their distal end regions 8 are brought together ( Figure 4) while their proximal end regions 9 are separated one the other.
  • the handle 5 is an elongated bar of axis Y-Y and has a transversal dimension slightly less than the spacing between the two proximal end regions 9 of the branches 6.
  • the distal end region 12 of the handle 5 is received at low clearance between the proximal end regions 9 of the branches 6.
  • the nut 2 is a hex nut received between the end regions distal 8 branches 6.
  • the gripping surfaces 10 of the head 6 are located in facing two opposite sides of the nut 2.
  • the head 4 has, by its surfaces of 10, a shape partially complementary to that of the nut 2.
  • the handle 5 is rotatable relative to the head 4 in the plane of Figure 1, on either side of its rest position, between two positions spacing branches 6 illustrated respectively in Figures 2 and 3.
  • the handle 5 has pivoted relative to the head 6 in the direction 14 of the nut 2.
  • the distal end region 12 of the handle 5 takes then support at a point 15 on the free end of the lower branch 6 (on the FIG. 2) of the head 4, and at a point 16 adjacent to the core 7 on the other branch 6.
  • Points 15 and 16 are spaced apart longitudinally along the X-X axis.
  • the X-X and Y-Y axes are then also inclined relative to the other.
  • the handle 5 has rotated relative to the head 4 in the direction 18 of unscrewing the nut 2.
  • the distal end region 12 of the handle 5 then bears in a first point 15 on the upper branch 6 (in FIG. 3) of the head 4 and in a second point 16 on the other branch 6 of the head 4.
  • the fulcrums 15 and 16 then have a relative longitudinal position similar to that of points 15 and 16 of the Figure 2.
  • the X-X and Y-Y axes are then also inclined with respect to the other.
  • the operating mode of the key 1 is as follows.
  • the handle 5 then reaches the position of FIG. 2 and drives the head 4 in rotation in the direction 14. A tightening torque is therefore applied to the nut 2 due to the partial complementarity of shape between the head 4 and the nut 2.
  • the proximal end regions 9 then form stress transmission parts from the handle 5 to the gripping surfaces 10 and thus to the nut 2.
  • the handle 5 plays, thanks to the two support points 15 and 16 shifted longitudinally, the role of a lever of the first order and tends to remove the proximal end regions 9 of the branches 6 of the head 4.
  • distal end regions 8 of these branches 6 tend to closer. This effect tends to offset the tendency to widen distal end regions 8 of the branches 6 and therefore to limit the relative rotation the nut 2 with respect to the head 4.
  • the handle 5 when applying a force 24 of unscrewing the nut 2 on the proximal end 21 of the handle 5, the handle 5 takes the position illustrated in Figure 3 and tends on the one hand to drive the nut 2 in the direction of rotation 18 and, secondly, to bring the regions closer together through distal end 8 of the branches 6.
  • the key 1 allows, in both directions of training, to limit the rotation between the nut 2 and the head 4 and also the risk of bursting of the head 4.
  • the key 1 allows the transmission of couples more important that a conventional open-end wrench.
  • key 1 allows to access a screw member as easily as a spanner classic.
  • Key 1 of FIG. 5 differs from that of FIGS. 1 to 4 in that that the head 4 and the handle 5 are no longer separated but connected by a blade longitudinal 26 material coming with the soul 7 of the head 4 and the region distal end 12 of the handle 5.
  • This blade 26 can be deformed, for example in flexion, so that it form between the head 4 and the handle 5 a flexible connection allowing the latter to pivot relative to the head 4 to take the positions shown on the Figures 2 and 3.
  • the proximal end regions 9 of the head 4 comprise four inner beads 27 arranged in pairs on these regions 9.
  • the beads 27 of the same region 9 are spaced from each other and face the beads 27 of the other region 9.
  • These beads 27 form support reliefs of the handle 5 on the proximal end regions 9 when the handle 5 will take, relative to the head 4, the positions of Figures 2 and 3. Note that in the rest position represented in FIG. 5, the four beads 27 are practically at contact of the handle 5.
  • the blade 26 may not have come of material both with the head 4 and the handle 5, but fixed by welding to the head 4 and / or handle 5.
  • the blade 26 is replaced by a elastomer insert, made integral with both the head 4 and the sleeve 5 by means known per se (mechanical means or overmolding by injection, for example).
  • the head 4 comprises bearing reliefs of 5 against the proximal end regions 9 of the branches 6, namely a pair of beads 28 and a pair of pins 29. These reliefs protrude from the branches 6 to the distal end region 12 of the handle 5.
  • the beads 28, on the one hand, and the pins 29, on the other hand, are arranged opposite. However, according to other variants the beads 28 and the pawns 29 may be arranged otherwise.
  • the beads 28 came from each material with the region proximal end 9 of a branch 6 and are further from the central core 7 that the pawns 29.
  • the pins 29, of cylindrical shape, are each received in a recess 30 formed in the proximal end region 9 of a branch 6.
  • the head 4 carries two pairs of recesses 30 which can receive the pins 29 and spaced along the X-X axis.
  • the beads 28 and the pins 29 define the points of support of the handle 5 on the head 4 so that it fulfills its role of lever. It is then possible to adjust, by changing the position of the counters 29, the intensity of the trend to the approximation of surfaces 10 induced by a training effort in rotation of a nut 2 applied to the handle 5.
  • FIG. 7 illustrates another tool 1 according to the invention that differs from the key in FIGS. 1 to 4 in that the handle has been replaced by an 5 T-shaped maneuver and which thus comprises a transmission bar 32 prolonged torque by a handle 33.
  • the distal end region 34 of the actuator 5 is received at weak clearance between the proximal end regions 9 of the branches 6.
  • the proximal end regions of the head 4 present four beads 27 of support of the region 34 of the actuating member 5 on the head 4.
  • This region 34 has a rectangular section and is provided with a bore transversal 36.
  • a transverse pin 37 passes through the two branches 6 and the bore 36.
  • This pin 37 connects the operating member 5 and the head 4 in for orienting the operating member 5 relative to the head 4, by rotation about the axis of the pin 37.
  • the bar 32 may be located off the plane of the head 4, for example inclined or perpendicular to this plane as shown in Figure 7.
  • the clearance between the bore 36 and the pin 37 is sufficiently important for, when in the position of Figure 7 is applied to the handle 33 a torque drive in rotation of a nut, allow the rotation of the bar 32 about its longitudinal axis relative to the head 4.
  • the region 34 of the bar 32 then bears on the beads 27 and thus tends to spread by effect cam regions 9 branches 6 to tend to bring the surfaces of taken 10 as before.
  • the pin 37 is removable to allow separation the head 4 and the body 5, and thus to connect heads 4 of sizes and shapes different to the actuator 5.
  • the handle 5 of the key of FIGS. 1 to 4 has been replaced by the outlet end 40 of a key Dynamometric 41.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Gripping On Spindles (AREA)
  • Manipulator (AREA)

Claims (13)

  1. Drehantriebswerkzeug (1) für ein Schraubverbindungsorgan (2), insbesondere ein Handwerkzeug, des Typs, der einen wenigstens zwei Angriffsoberflächen (10) aufweisenden Kopf (4) zum Antreiben des Schraubverbindungsorgans durch eine wenigstens teilweise Formkomplementarität, und Mittel (5; 41) für den rotatorischen Antrieb des Kopfes umfasst, wobei sich der Kopf (4) global wie ein Monoblockteil verhält, wenn ein Schraubverbindungsorgan rotatorisch angetrieben wird, wobei der Kopf einen Bereich (7) für die Verbindung der Angriffsoberflächen sowie Teile (9) für die Übertragung einer auf die Antriebsmittel ausgeübten Drehkraft an die Angriffsoberflächen umfasst, wobei sich der Verbindungsbereich (7) zwischen den Kraftübertragungsteilen (9) und den Angriffsoberflächen (10) befindet, dadurch gekennzeichnet, dass der Kopf (4) so beschaffen ist, dass die Wirkung der Drehantriebsmittel auf die Kraftübertragungsteile (9) bestrebt ist, die Geometrie des Kopfes elastisch zu verformen, um die Angriffsoberflächen (10) einander anzunähern, wenn über die Antriebsmittel (5; 41) eine Drehantriebskraft eines Schraubverbindungsorgans (2) ausgeübt wird.
  2. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Mittel zum rotatorischen Antreiben des Kopfes ein Betätigungsorgan (5; 41) für den Kopf (4) umfassen.
  3. Werkzeug nach Anspruch 2, dadurch gekennzeichnet, dass das Betätigungsorgan (5; 41) für den Kopf (4) in Bezug auf diesen beweglich ist, um zu versuchen, die Angriffsoberflächen (10) durch eine Hebel- oder Nockenwirkung auf die Kraftübertragungsteile (9) einander anzunähern, wenn auf das Betätigungsorgan (5; 41) eine Drehantriebskraft eines Schraubverbindungsorgans (2) ausgeübt wird.
  4. Werkzeug nach Anspruch 3, dadurch gekennzeichnet, dass der Kopf (4) eine im Allgemeinem H-förmige Konfiguration hat und zwei Schenkel (6) besitzt, die durch einen Mittelkern (7) verbunden sind, wobei ein distaler Bereich (8) jedes Schenkels eine der Angriffsoberflächen (10) aufweist und die proximalen Bereiche (9) der Schenkel die Kraftübertragungsteile bilden, dass die zwei Schenkel (6) relativ zueinander durch Verformung des Mittelkerns beweglich sind, um die Angriffsoberflächen (10) durch Beabstandung der proximalen Bereiche (9) der Schenkel (6) einander anzunähern, und dass ein distaler Bereich (12, 34) des Betätigungsorgans (5; 41) zwischen den proximalen Bereichen (9) der Schenkel angeordnet ist, um sie durch Hebel- oder Nockenwirkung zu beabstanden, wenn auf das Betätigungsorgan (5; 41) eine Drehantriebskraft eines Schraubverbindungsorgans (2) ausgeübt wird.
  5. Werkzeug nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass das Betätigungsorgan (5; 41) mit dem Kopf über eine nachgiebige Verbindung (26) verbunden ist.
  6. Werkzeug nach Anspruch 5, dadurch gekennzeichnet, dass die nachgiebige Verbindung einen verformbaren Teil (26) umfasst, der einteilig mit dem Kopf (4) und dem Betätigungsorgan (5; 41) ausgebildet ist.
  7. Werkzeug nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Betätigungsorgan (5; 41) und der Kopf (4) getrennt oder trennbar sind.
  8. Werkzeug nach Anspruch 7, dadurch gekennzeichnet, dass es lösbare Mittel (37) für die Verbindung des Kopfes (4) und des Betätigungsorgans (5) umfasst.
  9. Werkzeug nach einem der Ansprüche 2 bis 4, 7 und 8, dadurch gekennzeichnet, dass das Betätigungsorgan (5; 41) in Bezug auf den Kopf (4) orientierbar ist.
  10. Werkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Betätigungsorgan einen Teil eines dynamometrischen Werkzeugs (41) bildet.
  11. Werkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es Mittel (29, 30) zum Einstellen des Bestrebens der Verformung des Kopfes (4) unter der Wirkung der Drehantriebsmittel (5; 41) umfasst.
  12. Werkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Kopf zwei offene Klemmbacken (8) umfasst, die jeweils wenigstens eine der Angriffsoberflächen (10) aufweisen.
  13. Werkzeug nach den Ansprüchen 5 und 12 in Kombination, dadurch gekennzeichnet, dass die nachgiebige Verbindung aus einem Elastomer verwirklicht ist.
EP00960781A 1999-09-28 2000-09-01 Drehantriebswerkzeug für eine schraubelement Expired - Lifetime EP1216120B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9912086A FR2798876B3 (fr) 1999-09-28 1999-09-28 Outil d'entrainement en rotation pour un organe de vissage
FR9912086 1999-09-28
PCT/FR2000/002427 WO2001023145A1 (fr) 1999-09-28 2000-09-01 Outil d'entrainement en rotation pour un organe de vissage

Publications (2)

Publication Number Publication Date
EP1216120A1 EP1216120A1 (de) 2002-06-26
EP1216120B1 true EP1216120B1 (de) 2005-03-30

Family

ID=9550322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00960781A Expired - Lifetime EP1216120B1 (de) 1999-09-28 2000-09-01 Drehantriebswerkzeug für eine schraubelement

Country Status (7)

Country Link
US (1) US6557441B1 (de)
EP (1) EP1216120B1 (de)
AT (1) ATE291991T1 (de)
AU (1) AU7297000A (de)
DE (1) DE60019140T2 (de)
FR (1) FR2798876B3 (de)
WO (1) WO2001023145A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2952179B1 (fr) * 2009-10-30 2012-06-01 Peugeot Citroen Automobiles Sa Outillage permettant la mesure du jeu des differentes rotules presentes sur un train de vehicule, et procede de controle du jeu de rotules utilisant un tel outillage
US9259825B2 (en) 2013-02-06 2016-02-16 Grace Engineering Corp. Torque wrench for archery broadheads and fasteners
US9347162B1 (en) * 2013-11-21 2016-05-24 Ronald R. Pitts Fabric seam alignment tool
DE102020106888A1 (de) * 2020-03-13 2021-09-16 Grohe Ag Werkzeug zur Betätigung eines Einstellorgans einer Sanitärarmatur

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1218576A (en) * 1916-05-06 1917-03-06 Howard W Hall Pipe-wrench.
US1361923A (en) * 1920-03-05 1920-12-14 William M Stovall Wrench
US1619744A (en) * 1921-03-28 1927-03-01 Paul J Mccloskey Mechanic's fishing tool
FR592653A (fr) * 1924-11-17 1925-08-06 Clé à pédale
CH136845A (de) * 1928-02-07 1929-11-30 Emil Klingler Johann Schraubenschlüssel.
GB618203A (en) * 1945-11-02 1949-02-17 George Thomas Logan Improvements in wrench construction
US2594154A (en) * 1950-03-22 1952-04-22 John J Greer Wrench having pivotable jaws cammed by pivoting handle
US2886998A (en) * 1957-07-12 1959-05-19 George W Scott Joint for an angularly adjustable wrench head
GB8812527D0 (en) * 1988-05-26 1988-06-29 Bantex Ltd Improvements in & relating to fitting of aerials
US5464421A (en) * 1991-06-14 1995-11-07 Surgin Surgical Instrumentation, Inc. Hemorrhage occluder, applicator and method
US5365809A (en) * 1993-11-05 1994-11-22 Hsiao Chia Yuan Adjustable spanner
US5699701A (en) * 1996-05-07 1997-12-23 Cotten, Jr.; David L. Tool for removing vehicle gas tank cap

Also Published As

Publication number Publication date
FR2798876B3 (fr) 2001-12-14
DE60019140D1 (de) 2005-05-04
US6557441B1 (en) 2003-05-06
WO2001023145A1 (fr) 2001-04-05
AU7297000A (en) 2001-04-30
FR2798876A1 (fr) 2001-03-30
ATE291991T1 (de) 2005-04-15
EP1216120A1 (de) 2002-06-26
DE60019140T2 (de) 2006-02-09

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