WO2001085396A1 - Collar clamping pliers - Google Patents

Collar clamping pliers Download PDF

Info

Publication number
WO2001085396A1
WO2001085396A1 PCT/FR2001/001423 FR0101423W WO0185396A1 WO 2001085396 A1 WO2001085396 A1 WO 2001085396A1 FR 0101423 W FR0101423 W FR 0101423W WO 0185396 A1 WO0185396 A1 WO 0185396A1
Authority
WO
WIPO (PCT)
Prior art keywords
jaws
clamp
jaw
ear
hook
Prior art date
Application number
PCT/FR2001/001423
Other languages
French (fr)
Inventor
Eric Chauffeteau
Cyriaque Fouqueray
Didier Goussault
Richard Chene
Original Assignee
Etablissements Caillau
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 Etablissements Caillau filed Critical Etablissements Caillau
Priority to BR0110494-2A priority Critical patent/BR0110494A/en
Priority to JP2001582035A priority patent/JP2004515368A/en
Priority to US10/275,510 priority patent/US20030167881A1/en
Priority to EP01931831A priority patent/EP1280633B1/en
Priority to KR1020027015183A priority patent/KR20020097265A/en
Priority to DE60114601T priority patent/DE60114601T2/en
Priority to AU2001258523A priority patent/AU2001258523A1/en
Publication of WO2001085396A1 publication Critical patent/WO2001085396A1/en

Links

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
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears
    • 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
    • B25B25/00—Implements for fastening, connecting or tensioning of wire or strip
    • B25B25/005—Implements for fastening, connecting or tensioning of wire or strip for applying wire clasps to hose couplings

Definitions

  • the present invention relates to a clamp intended for tightening a clamp which comprises two end portions respectively provided with a radial projection called an ear and a hook capable of being hooked on said ear to carry out the clamping, the clamp comprising two jaws respectively able to cooperate with the ear and with the hook and to be brought closer to each other to hang the hook on the ear.
  • Tightening the clamp reduces the diameter of the collar by bringing the hook closer to the ear, until it passes over it and hangs on it.
  • To tighten the collar it is first placed around the object to be tightened, in the open state, it is positioned correctly and then, with pliers, the above operation is carried out.
  • the collar must be positioned very precisely. This is for example the case when the collar is used to clamp a pipe on a nozzle with sealing, which requires that the clamping forces are applied in a particular region of the nozzle, for example between two beads that the latter has. It may also be necessary for the collar to be oriented in a particular way on the pipe.
  • the jaws of the pliers are usually simply placed respectively behind the hook and behind the ear. It can happen that, during an improper handling, the hook or the ear escapes the jaw which was applied against him or against her. In such a case, the whole tightening operation has to be started again.
  • the invention aims to provide a clamp of the aforementioned type, to facilitate the clamping operation by controlling better positioning of the collar when tightening and avoiding that the collar does not escape the jaws of the clamp.
  • At least a first jaw is equipped with a retaining member movable relative to it between a retaining position in which this retaining member is able to cooperate with at least one of the elements constituted by the ear and by the hook for retaining said element against said jaw and a release position in which it releases said element relative to this jaw.
  • the first jaw has a bearing surface facing the second jaw and the retaining member is disposed beyond this bearing surface in the direction going towards said second jaw.
  • this jaw when this jaw is disposed against one of the elements constituted by the hook and the ear, this element comes to bear against the bearing surface, and the retaining member, which is disposed in front of its surface d 'support, retains this element in this position.
  • the retaining member is movable transversely to the direction in which the jaws are moved so as to be brought closer or distant from each other.
  • the retaining member can thus be arranged in a simple manner, in a limited space.
  • the clamp comprises elastic return means urging the retaining member permanently towards its retaining position.
  • this element is automatically retained in this jaw by the automatic positioning of the retaining member in its retaining position.
  • the clamp comprises a biasing member capable, during the clamping of the clamp, to cooperate with the retaining member to urge said retaining member towards its release position.
  • the loosening of the retaining member relative to the element (hook or ear) which it retains also takes place automatically simply by tightening the clamp.
  • the biasing member is arranged such that the retaining member does not reach its release position until the clamp is tightened. This increases the security of tightening, by preventing the clamp from being separated from the collar until the latter is correctly tightened.
  • the retaining member is formed by a lever pivotally mounted on the first jaw.
  • the pivoting lever for example in the shape of a claw, constitutes a particularly simple embodiment.
  • the two jaws are provided with a similar retaining member.
  • the hook and the ear having a suitable configuration, this makes it possible to retain each of these two protruding elements against, respectively, each of the two jaws.
  • the jaws are substantially identical, this makes it possible to apply one of them either against the hook or against the ear, without one jaw being precisely adapted to the hook and the other being precisely adapted. by ear.
  • the jaws are mounted on, respectively, a first and a second support arm while being able to pivot relative to these arms about an orientation axis substantially parallel to the direction in which the jaws are moved to be close or distant from each other. It happens that there is insufficient clearance around the object to be tightened to allow the approach of the clamp in a plane radial perpendicular to the axis of the collar. Quite simply, for various practical reasons, the user may wish to orient the clamp relative to such a radial plane. This is made possible by the ability of the jaws to pivot on their support arms. For example, one can arrange the clamp normally around the collar and orient this clamp so as to place it in a position in which tightening is more practical. One can also have previously oriented the jaws in a suitable position to facilitate the approach of the clamp relative to the collar.
  • the clamp preferably comprises means for securing the two jaws in rotation in their pivoting about the orientation axis.
  • This rotational attachment means that, as soon as one jaw is pivoted about its orientation axis, the other jaw pivots at the same time, about its own orientation axis, at the same angle.
  • the two jaws are secured in rotation by an articulated connecting axis, capable of adopting an extension configuration when the jaws are separated and a fold-back configuration when the jaws are clamped against one another.
  • This articulated connecting axis constitutes a simple means for linking the two jaws in pivoting, which in no way hinders the clamping of the clamp.
  • FIG. 1 is an elevational view, taken along the pivot axis of the gripper arms, of a gripper according to the invention, the jaws and the end portions of the arms which carry them being shown in section in a plane perpendicular to the axis of pivoting of these arms, a clamp being partially shown in engagement with the jaws, the latter being shown in the open position of the clamp;
  • FIG. 2 is an enlarged view of the jaws, in the same section as in Figure 1;
  • FIG. 3 is a view along arrow III of Figure 2;
  • FIG. 4 is a sectional view along line IV-IV of Figure 3;
  • FIG. 8 shows schematically a tightening clamp tightened using the pliers according to the invention.
  • FIG. 9 is a schematic and partial view along arrow IX of Figure 1.
  • the clamp shown in Figure 1 comprises two actuating arms 10 and 12, mounted pivoting relative to each other around an axis A. It also comprises two support arms, respectively 14 and 16, which each carry a jaw, respectively 18 and 20.
  • the clamp is with increased effort, the support arm 16 extending in extension of the actuating arm 12, while the support arm 14 is connected to these arms 12 and 16 by a rod system 22 which itself, by a cam system 24 is connected to the actuating arm 10.
  • the present invention relates to the jaws of the clamp and it should be understood that it applies to clamps devoid of force reduction system or to clamps provided with a force reduction system different from that which is represented.
  • the clamp is open and its jaws are spaced from each other. It is returned to this open position by a return spring 26 disposed between the arms 14 and 16.
  • a clamp 28 which shows the two end portions is disposed between the jaws of the clamp.
  • a first end portion 28A carries a hook 29, while the second end portion 28B carries an ear 30.
  • the collar 28 has an extension 31 called the flap, which extends the terminal portion 28B beyond the ear 30.
  • the collar 28 ′ in FIG. 8 is of the type described in EP 0 724
  • the jaws 18 and 20 each comprise a jaw piece, respectively 38 and 40, which is fixed by a stud, respectively 38A and 40A, to the corresponding support arm, 14 or
  • the jaw 20 is described in more detail, the jaw 18 being identical to it.
  • the front face of a jaw is that of its faces which is turned towards the other jaw, while the rear face is opposite to it.
  • the front face of the jaw piece 40 has a recess 42 delimited upwards by an overhanging zone 44.
  • FIG. 2 shows the cooperation of the collar with the jaws of the pliers, by placing the ear 30 engaged with the jaw 40 and the hook 29 engaged with the jaw 38. It can be seen that the rear parts of the hook and of the ear are engaged in the recesses, respectively 42 and 41 which equip the jaws, and that their respective bases are in abutment on the bearing surfaces, respectively 44 and 43.
  • Each of the jaws has a retaining member, respectively 45 for the jaw 18 and 46 for the jaw 20. They are both visible in FIG. 4.
  • a more detailed description of the retaining member 46 which is integral with the jaw 18. He is constituted by a lever, the free end of which has the shape of a claw 46A capable, as seen in FIG. 2, of being engaged under the ear 30 when the latter is engaged with the jaw 20.
  • the base 46B of the lever that is to say its end opposite the free end 46A, is pivotally mounted on the jaw 20, around a pivot axis A46. More precisely, the base of the lever is fixed to the cheek 40B of the jaw piece 40 by a stud or the like 48.
  • the retaining element 46 is spaced from the bearing surface 44 in the direction going towards the jaw 18.
  • this bearing surface and the retaining element is provided a space allowing to accommodate at least the thickness of the collar in the area of the base of the hook or the ear.
  • the base of the ear has a boss, and this is also taken into account in the spacing of the retaining member with respect to the bearing surface.
  • the double arrow D in Figure 2 indicates the direction in which the jaws move relative to each other to tighten or open the clamp.
  • the axis A46 of rotation of the lever 46 is oriented parallel to this direction D, so that the lever moves transversely to said direction.
  • Figure 3 shows the lever 46 in its active retaining position.
  • the width L of the recess 42 corresponds substantially to the width of the hook 29 or the ear 30, measured in the axial direction of the collar.
  • the hook or the ear cooperates with a jaw, he or she is wedged in the transverse direction T of this jaw by the lateral surfaces 42B and 42C which delimit the recess 42 in each of the cheeks 40B and 40C.
  • the free end 46A of the lever 46 is engaged under the hook or under the ear. In fact, in the retaining position, the free end 46A protrudes from the surface 42B in the direction going towards the surface 42C.
  • the lever 46 is housed in a cavity 50 formed in the cheek 40B of the jaw piece 40. It can be seen that, in the retaining position visible in particular in FIGS. 3 and 4, the back 46C of the lever 46 is that is to say the surface of this lever which is distant from the recess 42, is spaced by a distance d with respect to the wall 50A which delimits the cavity 50 on the side opposite to the cheek 40C.
  • the lever is retained by a stop 50B formed on the face of the cavity 50 opposite the face 50A. This stop 50B limits the stroke of the lever towards the interior of the recess 42 (that is to say towards the cheek 40C).
  • the lever 46 is permanently returned to its retaining position by elastic return means constituted, in the example shown, by a spring 52, which is arranged around the stud 48, of which a first end 52A bears against the wall 50A of the cavity 50, and the other end of which 52B cooperates with the back of the lever.
  • elastic return means constituted, in the example shown, by a spring 52, which is arranged around the stud 48, of which a first end 52A bears against the wall 50A of the cavity 50, and the other end of which 52B cooperates with the back of the lever.
  • the lever 45 which equips the other jaw 18 is mounted in the same way as the lever 46, on the cheek 38B of the jaw piece 38. It is therefore also pivotally mounted around an axis A45 parallel to the direction D.
  • the two jaws 18 and 20 are identical and they are arranged so that the cheek 38B provided with the lever 45 is opposite the cheek 40C devoid of the lever, just as the cheek 40B provided with the lever 46 is opposite the cheek 38C without retaining lever. In fact, in the example shown, it has been chosen that each jaw is equipped with only one retaining member.
  • the retaining lever 45 is able to cooperate with one of the hooking elements, for example the hook 29 of the collar, on a first longitudinal edge of the collar, while the other retaining lever 46 cooperates with the other attachment element, in this case the ear 30, on the other longitudinal edge of the collar.
  • the other attachment element in this case the ear 30, on the other longitudinal edge of the collar.
  • the two jaws are in fact brought together so that the front ends 38 'and 40' of the jaw pieces 38 and 40, respectively delimited by the front ends of the cheeks 38B and 38C and by the front ends cheeks 40B and 40C are in contact.
  • This contact is not hampered by the fact that the free ends 45A and 46A of the levers 45 and 46 project slightly forward from the pieces of jaws which carry them.
  • the front face of the cheek 40C has a slight recess 40'C intended to accommodate the projecting portion of the free end 45A of the lever 45.
  • a similar recess 38'C is produced in the cheek 38C and one see in FIG. 5 that it houses the projecting portion of the free end 46A of the lever 46.
  • the lever 46 was brought into this release position by a biasing member 54 which, when the clamp was tightened, made this lever pivot by making it enter the cavity 50. Likewise, a biasing member 53 brings the lever 45 in its released position when tightening the clamp.
  • biasing members cooperate with the respective retaining members when the clamp is tightened. They are preferably arranged in such a way that the two retaining members cannot effectively occupy their release positions both at the same time when the clamp is actually tightened.
  • the biasing member cooperating with the lever 46 of the jaw 20 may be a part belonging to the other jaw 18, or, as in the example shown, an annex part.
  • the biasing member 53 may belong to the jaw 18 or to an annex.
  • the retaining member cooperating with the hook could be urged into the release position by the ear, when the latter is engaged under the hook, while the other retaining member, which cooperates with the ear, could be stressed in the released position by the arrival of the hook on the ear.
  • FIGS. 2 and 5 it can be seen that, when the clamp is tightened, the jaws have tilted so as to straighten towards the center of the collar.
  • the jaw parts 38 and 40 have pivoted over a few angular degrees, respectively around an axis B38 and around an axis B40, these axes being perpendicular to the axis B mentioned below.
  • the rear faces 38D and 40D of the jaw parts 38 and 40 were respectively in abutment against first support faces, 14A and 16A, support arms 14 and 16.
  • the rear faces 38D and 40D are spaced from the first bearing faces 14A and 16A, but are in abutment against the second bearing faces, respectively 14B and 16B, which are inclined relative to the first of an angle ⁇ .
  • the hook 29 and the ear 30 move relative to each other by turning on a circle whose center generally corresponds to the geometric center of the collar.
  • the hook and the ear, on the one hand, and the two jaws, on the other hand would tend to move on two circles of opposite curvatures.
  • the ability of the jaws to tilt relative to each other, respectively around the axes B38 and B40, allows them to be able to accompany the movement of the hook and the ear relative to the other while maintaining the latter perfectly, that is to say that this tilting allows them to also move on the circle formed by the collar.
  • the pins 38A and 40A for fixing the jaws are mounted with a play in holes, respectively 14C and 16C of the support arms.
  • the pins 38A and 40A are held in these bores by circlips, respectively 58 and 60, which hold locking washers, respectively 62 and 64, in abutment against the thrust washers, respectively 66 and 68, in abutment against the shoulders which delimit the holes 14C and 16C on the rear of the support arms.
  • the jaws are constantly returned to their support position against the first support faces 14A and 16A, by springs, respectively 70 and 72, the ends of which bear against holes in the arms support, respectively 74 and 76, and which are wound around the pins 38A and 48A, to form at least one turn supported on the back of the jaw parts.
  • the jaws can also be oriented by pivoting about an orientation axis B defined by the direction D of bringing these jaws closer and further apart.
  • FIG. 9 shows in strong lines the jaws arranged in the extension of the support arms of the clamp, for tightening a collar 28 whose geometric axis C is parallel to the axis A of articulation of the connection axis , itself perpendicular to the orientation axis B of the arms of the clamp.
  • the jaws can pivot around the B axis to tighten a differently oriented collar, for example, as shown in broken line in Figure 9, a collar whose geometric axis C would be perpendicular to the axis A.
  • the clamp comprises means for connecting the two jaws 18 and 20 in their pivoting about the orientation axis B.
  • these means are formed by an articulated connecting axis which connects the jaws together, the articulations of the axis not of course being parallel to the axis B.
  • This articulated connecting axis 80 can adopt a configuration of extension in the open position of the clamp (FIG. 2) and a fallback configuration in the clamping position (Figure 5). In Figures 2 and 5, the jaw parts are shown in section, but the connecting axis is shown in external view.
  • the articulated connecting axis 80 is disposed in a region of the jaws which is situated between their bearing surfaces which cooperate with the collar and the articulation axis A from the connecting axis perpendicular to the axis of orientation of the clamp.
  • a sliding rod system could also be provided to link the jaws in their rotation about the B axis.
  • the connecting axis comprises a rigid axis section 82 which is connected to each of the jaws by a connecting rod, respectively 84 and 86.
  • the connecting rod 84 is fixed between the two cheeks 40B and 40C of the jaw piece 40 being able to pivot relative to it about an axis A84, perpendicular to the axis B.
  • a first end 82A of the section of axis 82 is fixed on this connecting rod 84 while being able to pivot relative to it around an axis B84 parallel to the axis A84.
  • the connecting rod 86 is disposed between the cheeks 38B and 38C while being able to pivot around an axis A86, while the end 82B of the section of axis is fixed to it while being able to pivot around an axis B86.
  • the axes A84, B84, A86 and B86 are parallel to the axis of articulation A of the connecting axis perpendicular to the axis of orientation of the clamp.
  • the extension configuration of the articulated axis 80 is defined by the abutment of the lower face 82 'of the axis section 82 (face remote from the bearing surfaces 44 and 43) with abutment surfaces formed on the cheeks 40B and 40C of the jaw piece 40 and on the cheeks 38B and 38C of the jaw piece 38 (FIG. 3).
  • the connecting rods 84 and 86 are arranged so that the axes B84 and B86 are as far as possible from the rear faces of the pieces of jaws which carry them.
  • the articulated axis passes in its folded configuration, thanks to the fact that the connecting rods 84 and 86 pivot so as to bring the axes B84 and B86 respectively of said rear faces, until reaching the position shown on Figure 5.
  • the axis section 82 has slots 85 and 87 allowing the folding of the connecting rods through them. It was previously indicated that, thanks to biasing members 53 and 54, the levers 45 and 56 were brought into their exhaust configuration when the clamp is tightened.
  • these biasing members are formed on the articulated connecting axis and, more precisely, on the axis section 82.
  • the longitudinal edges (parallel to the axis B) of the axis section 82 move against the biasing surfaces (respectively 45D and 46D), belonging respectively to the levers 45 and 46.
  • the actuating members are formed by bulges, produced on the longitudinal edges of the section d 'axis 82, and whose ends 53A and 54A intended to be the first in contact with the actuating surfaces of the levers 45 and 46 are shaped as a ramp.
  • the retaining lever 46 has a ramp surface which cooperates with one of the elements constituted by the hook and by the ear of the collar when this element is pushed back towards the bearing surface 44, to cause the lever to disappear until this element rests on this bearing surface. In this situation, the lever can return to its retaining position. To this end, the ends 45A and 46A of the levers 45 and 46 are rounded.
  • the two jaws of the clamp are identical.
  • the hook 29 and the ear 30 are both retained by these retaining levers in the jaws of the clamp.
  • a clearance 29 ' is provided under the hook 29, allowing the insertion of the active free end 45A of the lever 45 under the hook.
  • the fold forming the rear of the hook is therefore in abutment against the bearing surface 43 and cannot be extracted therefrom since its front face is retained by the retaining lever 45.
  • the collar intended to be tightened by the clamp according to the invention also has a clearance 30 ′, formed under the ear. It can be seen in FIG. 8 that the ear 30 is slightly "open". Indeed, the two folds 30B and 30A which delimit this ear are spaced from one another so as to provide between them this clearance 30 '. The internal faces of these two folds are spaced at a distance d at least equal to the thickness of the active free end of the lever 45 or of the lever 46.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Surgical Instruments (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)

Abstract

The invention concerns a clamp having a hook (29) designed to be engaged on a lug (30). One first jaw (20) of the pliers is provided with a retaining member (46) mobile relative thereto between a retaining position wherein it is adapted to co-operate with the hook or with the lug to maintain said element against the jaw and a releasing position wherein it releases said element. Advantageously, the two jaws are provided with such a retaining member, said two members being respectively adapted to be engaged beneath the hook and beneath the lug which has an undercut therefor.

Description

Pince pour serrer un collier Pliers to tighten a collar
La présente invention concerne une pince destinée à serrer un collier de serrage qui comporte deux portions terminales respectivement munies d'une saillie radiale dénommée oreille et d'un crochet apte à être accroché sur ladite oreille pour réaliser le serrage du collier, la pince comprenant deux mâchoires respectivement aptes à coopérer avec l'oreille et avec le crochet et à être rapprochées l'une de l'autre pour accrocher le crochet sur l'oreille.The present invention relates to a clamp intended for tightening a clamp which comprises two end portions respectively provided with a radial projection called an ear and a hook capable of being hooked on said ear to carry out the clamping, the clamp comprising two jaws respectively able to cooperate with the ear and with the hook and to be brought closer to each other to hang the hook on the ear.
Le serrage de la pince réduit le diamètre du collier en rapprochant le crochet de l'oreille, jusqu'à ce qu'il passe par-dessus celle-ci et s'accroche sur elle. Pour serrer le collier, on le met d'abord en place autour de l'objet à serrer, à l'état ouvert, on le positionne correctement puis, avec une pince, on réalise l'opération précitée.Tightening the clamp reduces the diameter of the collar by bringing the hook closer to the ear, until it passes over it and hangs on it. To tighten the collar, it is first placed around the object to be tightened, in the open state, it is positioned correctly and then, with pliers, the above operation is carried out.
Dans certains cas, le collier doit être positionné très précisément. C'est par exemple le cas lorsque le collier sert à serrer un tuyau sur un embout avec étanchéité, ce qui nécessite que les forces de serrage soient appliquées dans une région particulière de l'embout, par exemple entre deux bourrelets que présente ce dernier. Il peut également être nécessaire que le collier soit orienté d'une façon particulière sur le tuyau.In some cases, the collar must be positioned very precisely. This is for example the case when the collar is used to clamp a pipe on a nozzle with sealing, which requires that the clamping forces are applied in a particular region of the nozzle, for example between two beads that the latter has. It may also be necessary for the collar to be oriented in a particular way on the pipe.
Lorsque le collier est disposé à l'état ouvert sur l'objet à serrer, il peut se déplacer légèrement par rapport à ce dernier, par exemple en tournant autour de son axe. De plus, il arrive que l'on déplace légèrement le collier par inadvertance en disposant les mâchoires de la pince contre, respectivement, le crochet et l'oreille. Il importe donc de remettre le collier en place avant son serrage ou de le maintenir avec une main pendant qu'on le serre avec l'autre.When the collar is placed in the open state on the object to be tightened, it can move slightly with respect to the latter, for example by turning around its axis. In addition, it sometimes happens that the collar is slightly inadvertently moved by placing the jaws of the clamp against, respectively, the hook and the ear. It is therefore important to put the collar back in place before tightening or to hold it with one hand while tightening it with the other.
Par ailleurs, les mâchoires de la pince sont habituellement simplement placées respectivement derrière le crochet et derrière l'oreille. Il peut arriver que, lors d'une manipulation malencontreuse, le crochet ou l'oreille échappe à la mâchoire qui était appliquée contre lui ou contre elle. Dans un tel cas, toute l'opération de serrage est à recommencer.In addition, the jaws of the pliers are usually simply placed respectively behind the hook and behind the ear. It can happen that, during an improper handling, the hook or the ear escapes the jaw which was applied against him or against her. In such a case, the whole tightening operation has to be started again.
L'invention vise à proposer une pince de serrage du type précité, permettant de faciliter l'opération de serrage en maîtrisant mieux le positionnement du collier lors du serrage et en évitant que le collier n'échappe aux mâchoires de la pince.The invention aims to provide a clamp of the aforementioned type, to facilitate the clamping operation by controlling better positioning of the collar when tightening and avoiding that the collar does not escape the jaws of the clamp.
Ce but est atteint grâce au fait qu'au moins une première mâchoire est équipée d'un organe de retenue mobile par rapport à elle entre une position de retenue dans laquelle cet organe de retenue est apte à coopérer avec au moins l'un des éléments constitués par l'oreille et par le crochet pour retenir ledit élément contre ladite mâchoire et une position de relâchement dans laquelle il libère ledit élément par rapport à cette mâchoire. Grâce à ces dispositions, lorsque les mâchoires de la pince sont appliquées sur le collier, le crochet ou l'oreille est retenu contre la mâchoire avec laquelle il ou elle coopère. Ceci empêche que le collier n'échappe à la pince. Ainsi, si le collier est mal positionné, sa position peut être rectifiée en manipulant la pince puisque le collier en est provisoirement solidaire grâce à l'organe de retenue. De plus, on évite que la mâchoire pourvue de l'organe de retenue ne glisse par rapport au crochet ou à l'oreille lors du serrage de la pince.This object is achieved thanks to the fact that at least a first jaw is equipped with a retaining member movable relative to it between a retaining position in which this retaining member is able to cooperate with at least one of the elements constituted by the ear and by the hook for retaining said element against said jaw and a release position in which it releases said element relative to this jaw. Thanks to these provisions, when the jaws of the clamp are applied to the collar, the hook or the ear is retained against the jaw with which he or she cooperates. This prevents the collar from escaping from the clip. Thus, if the collar is incorrectly positioned, its position can be corrected by manipulating the clamp since the collar is temporarily secured to it by means of the retaining member. In addition, it is avoided that the jaw provided with the retaining member does not slip relative to the hook or to the ear when the clamp is tightened.
Avantageusement, la première mâchoire comporte une surface d'appui tournée vers la deuxième mâchoire et l'organe de retenue est disposé au-delà de cette surface d'appui dans le sens allant vers ladite deuxième mâchoire.Advantageously, the first jaw has a bearing surface facing the second jaw and the retaining member is disposed beyond this bearing surface in the direction going towards said second jaw.
Ainsi, lorsque cette mâchoire est disposée contre l'un des éléments constitués par le crochet et l'oreille, cet élément vient en appui contre la surface d'appui, et l'organe de retenue, qui est disposé en avant de sa surface d'appui, retient cet élément dans cette position.Thus, when this jaw is disposed against one of the elements constituted by the hook and the ear, this element comes to bear against the bearing surface, and the retaining member, which is disposed in front of its surface d 'support, retains this element in this position.
Selon une configuration avantageuse, l'organe de retenue est mobile transversalement à la direction dans laquelle les mâchoires sont déplacées pour être rapprochées ou éloignées l'une de l'autre. L'organe de retenue peut être ainsi disposé de manière simple, dans un encombrement limité.According to an advantageous configuration, the retaining member is movable transversely to the direction in which the jaws are moved so as to be brought closer or distant from each other. The retaining member can thus be arranged in a simple manner, in a limited space.
Avantageusement, la pince comporte des moyens de rappel élastique sollicitant l'organe de retenue en permanence vers sa position de retenue. Dans ce cas, dès lors que la mâchoire pourvue de l'organe de retenue est disposée contre l'un des éléments constitués par l'oreille et le crochet, cet élément se trouve automatiquement retenu dans cette mâchoire par le positionnement automatique de l'organe de retenue dans sa position de retenue.Advantageously, the clamp comprises elastic return means urging the retaining member permanently towards its retaining position. In this case, as soon as the jaw provided with the retaining member is disposed against one of the elements constituted by the ear and the hook, this element is automatically retained in this jaw by the automatic positioning of the retaining member in its retaining position.
Avantageusement, la pince comporté un organe de sollicitation apte, lors du serrage de la pince, à coopérer avec l'organe de retenue pour solliciter ledit organe de retenue vers sa position de relâchement.Advantageously, the clamp comprises a biasing member capable, during the clamping of the clamp, to cooperate with the retaining member to urge said retaining member towards its release position.
Dans ce cas, le relâchement de l'organe de retenue par rapport à l'élément (crochet ou oreille) qu'il retient s'opère également automatiquement du seul fait du serrage de la pince. De préférence, l'organe de sollicitation est disposé de telle sorte que l'organe de retenue ne parvient dans sa position de relâchement que lorsque la pince est serrée. Ceci augmente la sécurité du serrage, en empêchant de séparer la pince du collier tant que celui-ci n'est pas correctement serré.In this case, the loosening of the retaining member relative to the element (hook or ear) which it retains also takes place automatically simply by tightening the clamp. Preferably, the biasing member is arranged such that the retaining member does not reach its release position until the clamp is tightened. This increases the security of tightening, by preventing the clamp from being separated from the collar until the latter is correctly tightened.
Avantageusement, l'organe de retenue est formé par un levier monté pivotant sur la première mâchoire.Advantageously, the retaining member is formed by a lever pivotally mounted on the first jaw.
Le levier pivotant, par exemple en forme de griffe, constitue un mode de réalisation particulièrement simple. Avantageusement, les deux mâchoires sont pourvues d'un organe de retenue analogue.The pivoting lever, for example in the shape of a claw, constitutes a particularly simple embodiment. Advantageously, the two jaws are provided with a similar retaining member.
Le crochet et l'oreille ayant une configuration adaptée, ceci permet de retenir chacun de ces deux éléments en saillie contre, respectivement, chacune des deux mâchoires. De plus, si les mâchoires sont sensiblement identiques, ceci permet d'appliquer indifféremment l'une d'entre elles contre le crochet ou contre l'oreille, sans qu'une mâchoire soit précisément adaptée au crochet et que l'autre soit précisément adaptée à l'oreille.The hook and the ear having a suitable configuration, this makes it possible to retain each of these two protruding elements against, respectively, each of the two jaws. In addition, if the jaws are substantially identical, this makes it possible to apply one of them either against the hook or against the ear, without one jaw being precisely adapted to the hook and the other being precisely adapted. by ear.
Selon un mode de réalisation avantageux, les mâchoires sont montées sur, respectivement, un premier et un deuxième bras de support en étant aptes à pivoter par rapport à ces bras autour d'un axe d'orientation sensiblement parallèle à la direction dans laquelle les mâchoires sont déplacées pour être rapprochées ou éloignées l'une de l'autre. II arrive que l'on dispose d'un dégagement insuffisant autour de l'objet à serrer pour permettre l'approche de la pince dans un plan radial perpendiculaire à l'axe du collier. Tout simplement, pour des raisons pratiques diverses, l'utilisateur peut souhaiter orienter la pince par rapport à un tel plan radial. Cela est rendu possible grâce à la capacité qu'ont les mâchoires de pivoter sur leurs bras de support. Par exemple, on peut disposer la pince normalement autour du collier et orienter cette pince de manière à la placer dans une position dans laquelle le serrage est plus pratique. On peut également avoir préalablement orienté les mâchoires dans une position convenable pour faciliter l'approche de la pince par rapport au collier.According to an advantageous embodiment, the jaws are mounted on, respectively, a first and a second support arm while being able to pivot relative to these arms about an orientation axis substantially parallel to the direction in which the jaws are moved to be close or distant from each other. It happens that there is insufficient clearance around the object to be tightened to allow the approach of the clamp in a plane radial perpendicular to the axis of the collar. Quite simply, for various practical reasons, the user may wish to orient the clamp relative to such a radial plane. This is made possible by the ability of the jaws to pivot on their support arms. For example, one can arrange the clamp normally around the collar and orient this clamp so as to place it in a position in which tightening is more practical. One can also have previously oriented the jaws in a suitable position to facilitate the approach of the clamp relative to the collar.
Dans ce cas, la pince comporte de préférence des moyens pour solidariser les deux mâchoires en rotation dans leur pivotement autour de l'axe d'orientation.In this case, the clamp preferably comprises means for securing the two jaws in rotation in their pivoting about the orientation axis.
Cette solidarisatiion en rotation signifie que, dès lors que l'on fait pivoter une mâchoire autour de son axe d'orientation, l'autre mâchoire pivote en même temps, autour de son propre axe d'orientation, selon le même angle.This rotational attachment means that, as soon as one jaw is pivoted about its orientation axis, the other jaw pivots at the same time, about its own orientation axis, at the same angle.
Ces moyens de solidarisation en rotation facilitent grandement la manipulation de la pince puisqu'ils assurent que les deux mâchoires ont toujours la même orientation.These means for securing in rotation greatly facilitate the handling of the clamp since they ensure that the two jaws always have the same orientation.
Avantageusement, les deux mâchoires sont solidarisées en rotation par un axe de liaison articulé, apte à adopter une configuration d'extension lorsque les mâchoires sont écartées et une configuration de repli lorsque les mâchoires sont serrées l'une contre l'autre.Advantageously, the two jaws are secured in rotation by an articulated connecting axis, capable of adopting an extension configuration when the jaws are separated and a fold-back configuration when the jaws are clamped against one another.
Cet axe de liaison articulé constitue un moyen simple pour lier les deux mâchoires en pivotement, qui ne gêne en aucun cas le serrage de la pince.This articulated connecting axis constitutes a simple means for linking the two jaws in pivoting, which in no way hinders the clamping of the clamp.
L'invention sera bien comprise et ses avantages apparaîtront mieux à la lecture de la description détaillée qui suit, d'un mode de réalisation représenté à titre d'exemple non limitatif. La description se réfère aux dessins annexés sur lesquels :The invention will be clearly understood and its advantages will appear better on reading the detailed description which follows, of an embodiment shown by way of nonlimiting example. The description refers to the accompanying drawings in which:
- la figure 1 est une vue en élévation, prise selon l'axe de pivotement des bras de la pince, d'une pince conforme à l'invention, les mâchoires et les portions d'extrémité des bras qui les portent étant représentées en coupe dans un plan perpendiculaire à l'axe de pivotement de ces bras, un collier de serrage étant partiellement représenté en prise avec les mâchoires, ces dernières étant représentées en position ouverte de la pince ;- Figure 1 is an elevational view, taken along the pivot axis of the gripper arms, of a gripper according to the invention, the jaws and the end portions of the arms which carry them being shown in section in a plane perpendicular to the axis of pivoting of these arms, a clamp being partially shown in engagement with the jaws, the latter being shown in the open position of the clamp;
- la figure 2 est une vue agrandie des mâchoires, dans la même coupe que sur la figure 1 ;- Figure 2 is an enlarged view of the jaws, in the same section as in Figure 1;
- la figure 3 est une vue selon la flèche III de la figure 2 ;- Figure 3 is a view along arrow III of Figure 2;
- la figure 4 est une vue en coupe selon la ligne IV-IV de la figure 3 ;- Figure 4 is a sectional view along line IV-IV of Figure 3;
- les figures 5, 6 et 7 correspondent respectivement aux figures 2, 3 et 4 pour la position serrée des mâchoires de la pince ;- Figures 5, 6 and 7 correspond respectively to Figures 2, 3 and 4 for the clamped position of the jaws of the clamp;
- la figure 8 montre schématiquement un collier de serrage serré à l'aide de la pince conforme à l'invention ; et- Figure 8 shows schematically a tightening clamp tightened using the pliers according to the invention; and
- la figure 9 est une vue schématique et partielle selon la flèche IX de la figure 1. La pince représentée sur la figure 1 comprend deux bras d'actionnement 10 et 12, montés pivotant l'un par rapport à l'autre autour d'un axe A. Elle comporte également deux bras de support, respectivement 14 et 16, qui portent chacun une mâchoire, respectivement 18 et 20. Dans l'exemple représenté, la pince est à effort démultiplié, le bras de support 16 s'étendant en prolongement du bras d'actionnement 12, tandis que le bras de support 14 est relié à ces bras 12 et 16 par un système de biellette 22 qui lui-même, par un système de came 24 est relié au bras d'actionnement 10.- Figure 9 is a schematic and partial view along arrow IX of Figure 1. The clamp shown in Figure 1 comprises two actuating arms 10 and 12, mounted pivoting relative to each other around an axis A. It also comprises two support arms, respectively 14 and 16, which each carry a jaw, respectively 18 and 20. In the example shown, the clamp is with increased effort, the support arm 16 extending in extension of the actuating arm 12, while the support arm 14 is connected to these arms 12 and 16 by a rod system 22 which itself, by a cam system 24 is connected to the actuating arm 10.
La présente invention concerne les mâchoires de la pince et il doit être entendu qu'elle s'applique à des pinces dépourvues de système de démultiplication d'effort ou à des pinces pourvues d'un système de démultiplication d'effort différent de celui qui est représenté.The present invention relates to the jaws of the clamp and it should be understood that it applies to clamps devoid of force reduction system or to clamps provided with a force reduction system different from that which is represented.
Sur la figure 1 , la pince est ouverte et ses mâchoires sont éloignées l'une de l'autre. Elle est rappelée dans cette position ouverte par un ressort de rappel 26 disposé entre les bras 14 et 16.In Figure 1, the clamp is open and its jaws are spaced from each other. It is returned to this open position by a return spring 26 disposed between the arms 14 and 16.
Un collier de serrage 28 dont on voit les deux portions terminales est disposé entre les mâchoires de la pince. Une première portion terminale 28A porte un crochet 29, tandis que la deuxième portion terminale 28B porte une oreille 30. Pour serrer le collier, il faut accrocher le crochet 29 sur cette oreille 30, comme on le voit sur la figure 8.A clamp 28 which shows the two end portions is disposed between the jaws of the clamp. A first end portion 28A carries a hook 29, while the second end portion 28B carries an ear 30. To tighten the necklace, hook the hook 29 on this ear 30, as seen in FIG. 8.
Dans l'exemple de la figure 1 , le collier 28 présente un prolongement 31 dénommé bavette, qui prolonge la portion terminale 28B au-delà de l'oreille 30.In the example of FIG. 1, the collar 28 has an extension 31 called the flap, which extends the terminal portion 28B beyond the ear 30.
Le collier 28' de la figure 8 est du type décrit dans EP 0 724The collar 28 ′ in FIG. 8 is of the type described in EP 0 724
106. Il comprend une première portion de bande qui, à sa première extrémité 28'B, porte l'oreille 30 et qui, à sa deuxième extrémité porte la bavette 31'. Le crochet 29 est formé sur une portion d'extrémité, 28'A d'une autre portion de bande qui est rapportée sur la première portion de bande. Sur la figure 2, c'est un collier de ce type qui est en prise avec les mâchoires.106. It comprises a first portion of strip which, at its first end 28'B, carries the lug 30 and which, at its second end carries the flap 31 '. The hook 29 is formed on an end portion, 28'A of another strip portion which is attached to the first strip portion. In Figure 2, it is a collar of this type which is engaged with the jaws.
Les mâchoires 18 et 20 comprennent chacune une pièce de mâchoire, respectivement 38 et 40, qui est fixée par un téton, respectivement 38A et 40A, au bras de support correspondant, 14 ouThe jaws 18 and 20 each comprise a jaw piece, respectively 38 and 40, which is fixed by a stud, respectively 38A and 40A, to the corresponding support arm, 14 or
16, et qui présente deux joues, respectivement 38B, 38C et 40B,16, and which has two cheeks, 38B, 38C and 40B respectively,
40C.40C.
On décrit plus en détail la mâchoire 20, la mâchoire 18 lui étant identique. Dans toute la suite, on considérera que la face avant d'une mâchoire est celle de ses faces qui est tournée vers l'autre mâchoire, tandis que la face arrière lui est opposée.The jaw 20 is described in more detail, the jaw 18 being identical to it. In the following, we will consider that the front face of a jaw is that of its faces which is turned towards the other jaw, while the rear face is opposite to it.
La face avant de la pièce de mâchoire 40 comporte un renfoncement 42 délimité vers le haut par une zone 44 en surplomb.The front face of the jaw piece 40 has a recess 42 delimited upwards by an overhanging zone 44.
La surface de cette zone 44 forme une surface d'appui pour la base 30A de l'oreille 30 ou la base 29A du crochet 29 (voir figure 8). A titre d'exemple, on a montré sur la figure 2 la coopération du collier avec les mâchoires de la pince, en disposant l'oreille 30 en prise avec la mâchoire 40 et le crochet 29 en prise avec la mâchoire 38. On voit que les parties arrière du crochet et de l'oreille sont engagées dans les renfoncements, respectivement 42 et 41 qui équipent les mâchoires, et que leurs bases respectives sont en appui sur les surfaces d'appui, respectivement 44 et 43.The surface of this zone 44 forms a bearing surface for the base 30A of the ear 30 or the base 29A of the hook 29 (see FIG. 8). By way of example, FIG. 2 shows the cooperation of the collar with the jaws of the pliers, by placing the ear 30 engaged with the jaw 40 and the hook 29 engaged with the jaw 38. It can be seen that the rear parts of the hook and of the ear are engaged in the recesses, respectively 42 and 41 which equip the jaws, and that their respective bases are in abutment on the bearing surfaces, respectively 44 and 43.
Chacune des mâchoires comporte un organe de retenue, respectivement 45 pour la mâchoire 18 et 46 pour la mâchoire 20. Ils sont tous les deux visibles sur la figure 4. On décrit plus en détail l'organe de retenue 46 qui est solidaire de la mâchoire 18. Il est constitué par un levier dont l'extrémité libre présente la forme d'une griffe 46A apte, comme on le voit sur la figure 2, à être engagée sous l'oreille 30 lorsque cette dernière est en prise avec la mâchoire 20. La base 46B du levier, c'est-à-dire son extrémité opposée à l'extrémité libre 46A, est montée pivotante sur la mâchoire 20, autour d'un axe de pivotement A46. Plus précisément, la base du levier est fixée sur la joue 40B de la pièce de mâchoire 40 par un téton ou analogue 48.Each of the jaws has a retaining member, respectively 45 for the jaw 18 and 46 for the jaw 20. They are both visible in FIG. 4. A more detailed description of the retaining member 46 which is integral with the jaw 18. He is constituted by a lever, the free end of which has the shape of a claw 46A capable, as seen in FIG. 2, of being engaged under the ear 30 when the latter is engaged with the jaw 20. The base 46B of the lever, that is to say its end opposite the free end 46A, is pivotally mounted on the jaw 20, around a pivot axis A46. More precisely, the base of the lever is fixed to the cheek 40B of the jaw piece 40 by a stud or the like 48.
On constate sur la figure 2 que l'élément de retenue 46 est espacé de la surface d'appui 44 dans le sens allant vers la mâchoire 18. Ainsi, entre cette surface d'appui et l'élément de retenue est ménagé un espace permettant de loger au moins l'épaisseur du collier dans la zone de la base du crochet ou de l'oreille. Dans certains cas, comme dans l'exemple représenté, la base de l'oreille présente un bossage, et il en est également tenu compte dans l'espacement de l'organe de retenue par rapport à la surface d'appui.It can be seen in FIG. 2 that the retaining element 46 is spaced from the bearing surface 44 in the direction going towards the jaw 18. Thus, between this bearing surface and the retaining element is provided a space allowing to accommodate at least the thickness of the collar in the area of the base of the hook or the ear. In some cases, as in the example shown, the base of the ear has a boss, and this is also taken into account in the spacing of the retaining member with respect to the bearing surface.
La double flèche D de la figure 2 indique la direction dans laquelle les mâchoires se déplacent l'une par rapport à l'autre pour serrer ou ouvrir la pince. L'axe A46 de rotation du levier 46 est orienté parallèlement à cette direction D, de sorte que le levier se déplace transversalement à ladite direction.The double arrow D in Figure 2 indicates the direction in which the jaws move relative to each other to tighten or open the clamp. The axis A46 of rotation of the lever 46 is oriented parallel to this direction D, so that the lever moves transversely to said direction.
La figure 3 montre le levier 46 dans sa position active de retenue. La largeur L du renfoncement 42 correspond sensiblement à la largeur du crochet 29 ou de l'oreille 30, mesurée selon la direction axiale du collier. Lorsque le crochet ou l'oreille coopère avec une mâchoire, il ou elle est calé dans la direction transversale T de cette mâchoire par les surfaces latérales 42B et 42C qui délimitent le renfoncement 42 dans chacune des joues 40B et 40C.Figure 3 shows the lever 46 in its active retaining position. The width L of the recess 42 corresponds substantially to the width of the hook 29 or the ear 30, measured in the axial direction of the collar. When the hook or the ear cooperates with a jaw, he or she is wedged in the transverse direction T of this jaw by the lateral surfaces 42B and 42C which delimit the recess 42 in each of the cheeks 40B and 40C.
On comprend que, dans cette situation, l'extrémité libre 46A du levier 46 est engagée sous le crochet ou sous l'oreille. En effet, dans la position de retenue, l'extrémité libre 46A fait saillie à partir de la surface 42B dans le sens allant vers la surface 42C. Le levier 46 est logé dans une cavité 50 ménagée dans la joue 40B de la pièce de mâchoire 40. On voit que, dans la position de retenue visible en particulier sur les figures 3 et 4, le dos 46C du levier 46, c'est-à-dire la surface de ce levier qui est éloignée du renfoncement 42, est espacé d'une distance d par rapport à la paroi 50A qui délimite la cavité 50 du côté opposé à la joue 40C. De l'autre côté, le levier est retenu par une butée 50B formée sur la face de la cavité 50 opposée à la face 50A. Cette butée 50B limite la course du levier vers l'intérieur du renfoncement 42 (c'est-à-dire vers la joue 40C)..It is understood that, in this situation, the free end 46A of the lever 46 is engaged under the hook or under the ear. In fact, in the retaining position, the free end 46A protrudes from the surface 42B in the direction going towards the surface 42C. The lever 46 is housed in a cavity 50 formed in the cheek 40B of the jaw piece 40. It can be seen that, in the retaining position visible in particular in FIGS. 3 and 4, the back 46C of the lever 46 is that is to say the surface of this lever which is distant from the recess 42, is spaced by a distance d with respect to the wall 50A which delimits the cavity 50 on the side opposite to the cheek 40C. On the other side, the lever is retained by a stop 50B formed on the face of the cavity 50 opposite the face 50A. This stop 50B limits the stroke of the lever towards the interior of the recess 42 (that is to say towards the cheek 40C).
Le levier 46 est rappelé en permanence vers sa position de retenue par des moyens de rappel élastique constitués, dans l'exemple représenté, par un ressort 52, qui est disposé autour du téton 48, dont une première extrémité 52A s'appuie contre la paroi 50A de la cavité 50, et dont l'autre extrémité 52B coopère avec le dos du levier.The lever 46 is permanently returned to its retaining position by elastic return means constituted, in the example shown, by a spring 52, which is arranged around the stud 48, of which a first end 52A bears against the wall 50A of the cavity 50, and the other end of which 52B cooperates with the back of the lever.
Le levier 45 qui équipe l'autre mâchoire 18 est monté de la même manière que le levier 46, sur la joue 38B de la pièce de mâchoire 38. Il est donc également monté pivotant autour d'un axe A45 parallèle à la direction D. Les deux mâchoires 18 et 20 sont identiques et elles sont disposées de telle sorte que la joue 38B pourvue du levier 45 se trouve en face de la joue 40C dépourvue du levier, de même que la joue 40B pourvue du levier 46 est en face de la joue 38C dépourvue de levier de retenue. En effet, dans l'exemple représenté, on a choisi que chaque mâchoire ne soit équipée que d'un seul organe de retenue.The lever 45 which equips the other jaw 18 is mounted in the same way as the lever 46, on the cheek 38B of the jaw piece 38. It is therefore also pivotally mounted around an axis A45 parallel to the direction D. The two jaws 18 and 20 are identical and they are arranged so that the cheek 38B provided with the lever 45 is opposite the cheek 40C devoid of the lever, just as the cheek 40B provided with the lever 46 is opposite the cheek 38C without retaining lever. In fact, in the example shown, it has been chosen that each jaw is equipped with only one retaining member.
Grâce à la disposition précitée, le levier de retenue 45 est apte à coopérer avec l'un des éléments d'accrochage, par exemple le crochet 29 du collier, sur un premier bord longitudinal du collier, tandis que l'autre levier de retenue 46 coopère avec l'autre élément d'accrochage, en l'espèce l'oreille 30, sur l'autre bord longitudinal du collier. On évite ainsi qu'il ne soit possible d'extraire l'oreille et le crochet des mâchoires de la pince en faisant basculer le collier autour d'un plan diamétral de ce dernier parallèle à la direction D. Les figures 5 à 7 montrent la situation lorsque la pince est serrée. Les deux mâchoires sont en effet rapprochées l'une de l'autre de telle sorte que les extrémités frontales 38' et 40' des pièces de mâchoires 38 et 40, respectivement délimitées par les extrémités frontales des joues 38B et 38C et par les extrémités frontales des joues 40B et 40C sont en contact. Ce contact n'est pas gêné par le fait que les extrémités libres 45A et 46A des leviers 45 et 46 sont en légère saillie vers l'avant des pièces de mâchoires qui les portent. En effet, la face frontale de la joue 40C présente un léger renfoncement 40'C destiné à loger la portion en saillie de l'extrémité libre 45A du levier 45. Un renfoncement 38'C analogue est réalisé dans la joue 38C et l'on voit sur la figure 5 qu'il loge la portion en saillie de l'extrémité libre 46A du levier 46.Thanks to the aforementioned arrangement, the retaining lever 45 is able to cooperate with one of the hooking elements, for example the hook 29 of the collar, on a first longitudinal edge of the collar, while the other retaining lever 46 cooperates with the other attachment element, in this case the ear 30, on the other longitudinal edge of the collar. This avoids that it is not possible to extract the ear and the hook from the jaws of the pliers by tilting the collar around a diametrical plane of the latter parallel to direction D. FIGS. 5 to 7 show the situation when the clamp is tight. The two jaws are in fact brought together so that the front ends 38 'and 40' of the jaw pieces 38 and 40, respectively delimited by the front ends of the cheeks 38B and 38C and by the front ends cheeks 40B and 40C are in contact. This contact is not hampered by the fact that the free ends 45A and 46A of the levers 45 and 46 project slightly forward from the pieces of jaws which carry them. Indeed, the front face of the cheek 40C has a slight recess 40'C intended to accommodate the projecting portion of the free end 45A of the lever 45. A similar recess 38'C is produced in the cheek 38C and one see in FIG. 5 that it houses the projecting portion of the free end 46A of the lever 46.
Dans la situation des figures 5 à 7, les leviers de retenue occupent leurs positions respectives de relâchement. On le voit mieux sur la figure 6, qui montre que le levier 46 est rentré dans la cavité 50, le dos de ce levier étant cette fois situé contre la paroi 50A.In the situation in FIGS. 5 to 7, the retaining levers occupy their respective release positions. This is best seen in FIG. 6, which shows that the lever 46 has returned to the cavity 50, the back of this lever this time being situated against the wall 50A.
Le levier 46 a été amené dans cette position de relâchement par un organe de sollicitation 54 qui, lors du serrage de la pince, a fait pivoter ce levier en le faisant rentrer dans la cavité 50. De même, un organe de sollicitation 53 amène le levier 45 dans sa position de relâchement lors du serrage de la pince.The lever 46 was brought into this release position by a biasing member 54 which, when the clamp was tightened, made this lever pivot by making it enter the cavity 50. Likewise, a biasing member 53 brings the lever 45 in its released position when tightening the clamp.
Ces organes de sollicitation coopèrent avec les organes de retenue respectifs au moment où la pince est serrée. Ils sont de préférence disposés de telle sorte que les deux organes de retenue ne puissent effectivement occuper leurs positions de relâchement tous les deux à la fois que lorsque la pince est effectivement serrée. Par exemple, l'organe de sollicitation coopérant avec le levier 46 de la mâchoire 20 peut être une pièce appartenant à l'autre mâchoire 18, ou bien, comme dans l'exemple représenté, une pièce annexe. De même, l'organe de sollicitation 53 peut appartenir à la mâchoire 18 ou à une pièce annexe.These biasing members cooperate with the respective retaining members when the clamp is tightened. They are preferably arranged in such a way that the two retaining members cannot effectively occupy their release positions both at the same time when the clamp is actually tightened. For example, the biasing member cooperating with the lever 46 of the jaw 20 may be a part belonging to the other jaw 18, or, as in the example shown, an annex part. Similarly, the biasing member 53 may belong to the jaw 18 or to an annex.
On pourrait également prévoir que les organes de retenue, en l'espèce les leviers 45 et 46, soient sollicités vers leur position de relâchement par une pièce appartenant au collier. Ainsi, l'organe de retenue coopérant avec le crochet pourrait être sollicité en position de relâchement par l'oreille, lorsque celle-ci est engagée sous le crochet, tandis que l'autre organe de retenue, qui coopère avec l'oreille, pourrait être sollicité en position de relâchement par l'arrivée du crochet sur l'oreille. En comparant les figures 2 et 5, on constate que, lors du serrage de la pince, les mâchoires ont basculé de manière à se redresser vers le centre du collier. Ainsi, les pièces de mâchoires 38 et 40 ont pivoté sur quelques degrés angulaires, respectivement autour d'un axe B38 et autour d'un axe B40, ces axes étant perpendiculaires à l'axe B évoqué dans la suite.Provision could also be made for the retaining members, in this case the levers 45 and 46, to be urged towards their relaxed position by a part belonging to the collar. Thus, the retaining member cooperating with the hook could be urged into the release position by the ear, when the latter is engaged under the hook, while the other retaining member, which cooperates with the ear, could be stressed in the released position by the arrival of the hook on the ear. By comparing FIGS. 2 and 5, it can be seen that, when the clamp is tightened, the jaws have tilted so as to straighten towards the center of the collar. Thus, the jaw parts 38 and 40 have pivoted over a few angular degrees, respectively around an axis B38 and around an axis B40, these axes being perpendicular to the axis B mentioned below.
Sur la figure 2, les faces arrière 38D et 40D des pièces de mâchoires 38 et 40 étaient respectivement en appui contre des premières faces d'appui, 14A et 16A, des bras d'appui 14 et 16. En revanche, sur la figure 5, les faces arrière 38D et 40D sont écartées des premières faces d'appui 14A et 16A, mais sont en appui contre les deuxièmes faces d'appui, respectivement 14B et 16B, qui sont inclinées par rapport aux premières d'un angle α. Lors du serrage du collier, le crochet 29 et l'oreille 30 se déplacent l'un par rapport à l'autre en tournant sur un cercle dont le centre correspond globalement au centre géométrique du collier.In FIG. 2, the rear faces 38D and 40D of the jaw parts 38 and 40 were respectively in abutment against first support faces, 14A and 16A, support arms 14 and 16. On the other hand, in FIG. 5 , the rear faces 38D and 40D are spaced from the first bearing faces 14A and 16A, but are in abutment against the second bearing faces, respectively 14B and 16B, which are inclined relative to the first of an angle α. When tightening the collar, the hook 29 and the ear 30 move relative to each other by turning on a circle whose center generally corresponds to the geometric center of the collar.
Si les mâchoires étaient fixes par rapport aux bras de support 14 et 16, elles se déplaceraient l'une par rapport à l'autre selon un cercle dont le centre est l'axe A, qui est situé évidemment de l'autre côté du collier par rapport au centre géométrique de ce dernier.If the jaws were fixed relative to the support arms 14 and 16, they would move relative to each other in a circle whose center is the axis A, which is obviously located on the other side of the collar with respect to the geometric center of the latter.
Par conséquent, lors du serrage du collier, le crochet et l'oreille, d'une part, et les deux mâchoires, d'autre part, auraient tendance à se déplacer sur deux cercles de courbures opposées. La capacité des mâchoires à basculer l'une par rapport à l'autre, respectivement autour des axes B38 et B40, leur permet d'être capables d'accompagner le mouvement du crochet et de l'oreille l'un par rapport à l'autre tout en maintenant parfaitement ce dernier, c'est-à-dire que ce basculement leur permet de se déplacer également sur le cercle formé par le collier. Pour permettre ce basculement, les tétons 38A et 40A de fixation des mâchoires sont montés avec un jeu dans des perçages, respectivement 14C et 16C des bras de support. Les tétons 38A et 40A sont maintenus dans ces perçages par des circlips, respectivement 58 et 60, qui maintiennent des rondelles de blocage, respectivement 62 et 64, en appui contre les rondelles de butée, respectivement 66 et 68, en butée contre les épaulements qui délimitent les perçages 14C et 16C sur l'arrière des bras d'appui.Consequently, when tightening the collar, the hook and the ear, on the one hand, and the two jaws, on the other hand, would tend to move on two circles of opposite curvatures. The ability of the jaws to tilt relative to each other, respectively around the axes B38 and B40, allows them to be able to accompany the movement of the hook and the ear relative to the other while maintaining the latter perfectly, that is to say that this tilting allows them to also move on the circle formed by the collar. To allow this tilting, the pins 38A and 40A for fixing the jaws are mounted with a play in holes, respectively 14C and 16C of the support arms. The pins 38A and 40A are held in these bores by circlips, respectively 58 and 60, which hold locking washers, respectively 62 and 64, in abutment against the thrust washers, respectively 66 and 68, in abutment against the shoulders which delimit the holes 14C and 16C on the rear of the support arms.
On peut remplacer ces circlips et ces rondelles par des rondelles ressort traversées par les tétons et plaquées contre les faces arrière des bras de support dans lesquelles débouchent les perçages 14C et 16C par des clips métalliques, ces rondelles se déformant pour permettre le basculement des tétons.These circlips and these washers can be replaced by spring washers traversed by the studs and pressed against the rear faces of the support arms into which the holes 14C and 16C open out with metal clips, these washers deforming to allow the studs to tilt.
Comme on le voit sur la figure 2, les mâchoires sont constamment rappelées vers leur position d'appui contre les premières faces d'appui 14A et 16A, par des ressorts, respectivement 70 et 72, dont les extrémités prennent appui dans des perçages des bras d'appui, respectivement 74 et 76, et qui sont enroulés autour des tétons 38A et 48A, pour former au moins une spire en appui sur le dos des pièces de mâchoires. Les mâchoires peuvent également être orientées en pivotant autour d'un axe d'orientation B défini par la direction D de rapprochement et d'éloignement de ces mâchoires. Ainsi, la figure 9 montre en trait fort les mâchoires disposées dans le prolongement des bras de support de la pince, pour serrer un collier 28 dont l'axe géométrique C est parallèle à l'axe A d'articulation de l'axe de liaison, lui-même perpendiculaire à l'axe d'orientation B des bras de la pince. Les mâchoires peuvent pivoter autour de l'axe B pour serrer un collier orienté différemment, par exemple, comme indiqué en trait mixte interrompu sur la figure 9, un collier dont l'axe géométrique C serait perpendiculaire à l'axe A.As can be seen in FIG. 2, the jaws are constantly returned to their support position against the first support faces 14A and 16A, by springs, respectively 70 and 72, the ends of which bear against holes in the arms support, respectively 74 and 76, and which are wound around the pins 38A and 48A, to form at least one turn supported on the back of the jaw parts. The jaws can also be oriented by pivoting about an orientation axis B defined by the direction D of bringing these jaws closer and further apart. Thus, FIG. 9 shows in strong lines the jaws arranged in the extension of the support arms of the clamp, for tightening a collar 28 whose geometric axis C is parallel to the axis A of articulation of the connection axis , itself perpendicular to the orientation axis B of the arms of the clamp. The jaws can pivot around the B axis to tighten a differently oriented collar, for example, as shown in broken line in Figure 9, a collar whose geometric axis C would be perpendicular to the axis A.
Selon l'invention, la pince comporte des moyens pour lier les deux mâchoires 18 et 20 dans leur pivotement autour de l'axe d'orientation B. Dans le mode de réalisation préférentiel représenté, ces moyens sont formés par un axe de liaison articulé qui relie les mâchoires entre elles, les articulations de l'axe n'étant bien entendu pas parallèles à l'axe B. Cet axe de liaison articulé 80 peut adopter une configuration d'extension en position ouverte de la pince (figure 2) et une configuration de repli en position de serrage (figure 5). Sur les figures 2 et 5, les pièces de mâchoires sont représentées en coupe, mais l'axe de liaison est montré en vue extérieure. Pour éviter de gêner le serrage de la pince et celui du collier, l'axe de liaison articulé 80 est disposé dans une région des mâchoires qui est située entre leurs surfaces d'appui qui coopèrent avec le collier et l'axe d'articulation A de l'axe de liaison perpendiculaire à l'axe d'orientation de la pince. On pourrait également prévoir un système de tige coulissante pour lier les mâchoires dans leur rotation autour de l'axe B.According to the invention, the clamp comprises means for connecting the two jaws 18 and 20 in their pivoting about the orientation axis B. In the preferred embodiment shown, these means are formed by an articulated connecting axis which connects the jaws together, the articulations of the axis not of course being parallel to the axis B. This articulated connecting axis 80 can adopt a configuration of extension in the open position of the clamp (FIG. 2) and a fallback configuration in the clamping position (Figure 5). In Figures 2 and 5, the jaw parts are shown in section, but the connecting axis is shown in external view. To avoid interfering with the tightening of the clamp and that of the collar, the articulated connecting axis 80 is disposed in a region of the jaws which is situated between their bearing surfaces which cooperate with the collar and the articulation axis A from the connecting axis perpendicular to the axis of orientation of the clamp. A sliding rod system could also be provided to link the jaws in their rotation about the B axis.
Dans l'exemple représenté, l'axe de liaison comprend un tronçon d'axe rigide 82 qui est relié à chacune des mâchoires par une bielle, respectivement 84 et 86. Ainsi, la bielle 84 est fixée entre les deux joues 40B et 40C de la pièce de mâchoire 40 en pouvant pivoter par rapport à elle autour d'un axe A84, perpendiculaire à l'axe B. Une première extrémité 82A du tronçon d'axe 82 est fixée sur cette bielle 84 en pouvant pivoter par rapport à elle autour d'un axe B84 parallèle à l'axe A84. De même, la bielle 86 est disposée entre les joues 38B et 38C en pouvant pivoter autour d'un axe A86, tandis que l'extrémité 82B du tronçon d'axe lui est fixée en pouvant pivoter autour d'un axe B86.In the example shown, the connecting axis comprises a rigid axis section 82 which is connected to each of the jaws by a connecting rod, respectively 84 and 86. Thus, the connecting rod 84 is fixed between the two cheeks 40B and 40C of the jaw piece 40 being able to pivot relative to it about an axis A84, perpendicular to the axis B. A first end 82A of the section of axis 82 is fixed on this connecting rod 84 while being able to pivot relative to it around an axis B84 parallel to the axis A84. Similarly, the connecting rod 86 is disposed between the cheeks 38B and 38C while being able to pivot around an axis A86, while the end 82B of the section of axis is fixed to it while being able to pivot around an axis B86.
Lorsque les mâchoires sont dans la position représentée en trait fort sur la figure 9, les axes A84, B84, A86 et B86 sont parallèles à l'axe d'articulation A de l'axe de liaison perpendiculaire à l'axe d'orientation de la pince. La configuration d'extension de l'axe articulé 80 est définie par la venue en butée de la face inférieure 82' du tronçon d'axe 82 (face éloignée des surfaces d'appui 44 et 43) avec des surfaces de butée formées sur les joues 40B et 40C de la pièce de mâchoire 40 et sur les joues 38B et 38C de la pièce de mâchoire 38 (figure 3).When the jaws are in the position shown in solid lines in FIG. 9, the axes A84, B84, A86 and B86 are parallel to the axis of articulation A of the connecting axis perpendicular to the axis of orientation of the clamp. The extension configuration of the articulated axis 80 is defined by the abutment of the lower face 82 'of the axis section 82 (face remote from the bearing surfaces 44 and 43) with abutment surfaces formed on the cheeks 40B and 40C of the jaw piece 40 and on the cheeks 38B and 38C of the jaw piece 38 (FIG. 3).
Dans cette position, les bielles 84 et 86 sont disposées de telle sorte que les axes B84 et B86 sont éloignés au maximum des faces arrière des pièces de mâchoires qui les portent. Lorsque la pince est serrée, l'axe articulé passe dans sa configuration de repli, grâce au fait que les bielles 84 et 86 pivotent de manière à respectivement rapprocher les axes B84 et B86 desdites faces arrière, jusqu'à parvenir dans la position représentée sur la figure 5. Le tronçon d'axe 82 présente des lumières 85 et 87 permettant le repli des bielles à travers elles. On a indiqué précédemment que, grâce à des organes de sollicitation 53 et 54, les leviers 45 et 56 étaient amenés dans leur configuration d'échappement lorsque la pince est serrée.In this position, the connecting rods 84 and 86 are arranged so that the axes B84 and B86 are as far as possible from the rear faces of the pieces of jaws which carry them. When the clamp is tightened, the articulated axis passes in its folded configuration, thanks to the fact that the connecting rods 84 and 86 pivot so as to bring the axes B84 and B86 respectively of said rear faces, until reaching the position shown on Figure 5. The axis section 82 has slots 85 and 87 allowing the folding of the connecting rods through them. It was previously indicated that, thanks to biasing members 53 and 54, the levers 45 and 56 were brought into their exhaust configuration when the clamp is tightened.
Dans l'exemple avantageux représenté, ces organes de sollicitation sont formés sur l'axe de liaison articulée et, plus précisément, sur le tronçon d'axe 82. En effet, lorsque la pince est serrée, les bords longitudinaux (parallèles à l'axe B) du tronçon d'axe 82 se déplacent contre les surfaces de sollicitation (respectivement 45D et 46D), appartenant respectivement aux leviers 45 et 46. Les organes d'actionnement sont formés par des renflements, réalisés sur les bords longitudinaux du tronçon d'axe 82, et dont les extrémités 53A et 54A destinées à être les premières en contact avec les surfaces d'actionnement des leviers 45 et 46 sont conformées en rampe. En comparant les figures 3 et 6, on comprend que, lorsque le tronçon d'axe 82 progresse vers sa position de repli, le renflement 54 coulisse contre la face d'actionnement 46D du levier 46, jusqu'à amener ce dernier dans sa position de relâchement. Lorsque le tronçon d'axe 82 atteint sa position de repli représentée sur la figure 5, les deux renflements 53 et 54 coopèrent respectivement avec le levier 45 et avec le levier 46, de sorte que ces deux leviers de retenue sont dans leurs positions de relâchement. Le collier, dont le crochet a été accroché sur l'oreille, peut alors être extrait des mâchoires. De préférence, pour faciliter l'introduction du collier entre les mâchoires avant le serrage de la pince, le levier de retenue 46 présente une surface de rampe qui coopère avec l'un des éléments constitués par le crochet et par l'oreille du collier lorsque cet élément est repoussé vers la surface d'appui 44, pour conduire le levier à s'effacer jusqu'à ce que cet élément repose sur cette surface d'appui. Dans cette situation, le levier peut reprendre sa position de retenue. A cet effet, les extrémités 45A et 46A des leviers 45 et 46 sont arrondies.In the advantageous example shown, these biasing members are formed on the articulated connecting axis and, more precisely, on the axis section 82. In fact, when the clamp is tightened, the longitudinal edges (parallel to the axis B) of the axis section 82 move against the biasing surfaces (respectively 45D and 46D), belonging respectively to the levers 45 and 46. The actuating members are formed by bulges, produced on the longitudinal edges of the section d 'axis 82, and whose ends 53A and 54A intended to be the first in contact with the actuating surfaces of the levers 45 and 46 are shaped as a ramp. By comparing FIGS. 3 and 6, it is understood that, when the axis section 82 progresses towards its folded-back position, the bulge 54 slides against the actuating face 46D of the lever 46, until it brings the latter into its position. release. When the axis section 82 reaches its folded-back position shown in FIG. 5, the two bulges 53 and 54 cooperate respectively with the lever 45 and with the lever 46, so that these two retaining levers are in their released positions. . The collar, the hook of which was hung on the ear, can then be extracted from the jaws. Preferably, to facilitate the introduction of the collar between the jaws before tightening the clamp, the retaining lever 46 has a ramp surface which cooperates with one of the elements constituted by the hook and by the ear of the collar when this element is pushed back towards the bearing surface 44, to cause the lever to disappear until this element rests on this bearing surface. In this situation, the lever can return to its retaining position. To this end, the ends 45A and 46A of the levers 45 and 46 are rounded.
Dans l'exemple représenté, les deux mâchoires de la pince sont identiques. Ainsi, le crochet 29 et l'oreille 30 sont tous deux retenus par ces leviers de retenue dans les mâchoires de la pince. Un dégagement 29' est ménagé sous le crochet 29, permettant l'insertion de l'extrémité libre active 45A du levier 45 sous le crochet. Le pli formant l'arrière du crochet est donc en appui contre la surface d'appui 43 et ne peut pas en être extrait vers l'avant puisque sa face avant est retenue par le levier de retenue 45.In the example shown, the two jaws of the clamp are identical. Thus, the hook 29 and the ear 30 are both retained by these retaining levers in the jaws of the clamp. A clearance 29 'is provided under the hook 29, allowing the insertion of the active free end 45A of the lever 45 under the hook. The fold forming the rear of the hook is therefore in abutment against the bearing surface 43 and cannot be extracted therefrom since its front face is retained by the retaining lever 45.
Le collier destiné à être serré par la pince conforme à l'invention présente également un dégagement 30', ménagé sous l'oreille. On voit en effet sur la figure 8 que l'oreille 30 est légèrement "ouverte". En effet, les deux plis 30B et 30A qui délimitent cette oreille sont écartés l'un de l'autre de manière à ménager entre eux ce dégagement 30'. Les faces internes de ces deux plis sont espacées d'une distance d au moins égale à l'épaisseur de l'extrémité libre active du levier 45 ou du levier 46. The collar intended to be tightened by the clamp according to the invention also has a clearance 30 ′, formed under the ear. It can be seen in FIG. 8 that the ear 30 is slightly "open". Indeed, the two folds 30B and 30A which delimit this ear are spaced from one another so as to provide between them this clearance 30 '. The internal faces of these two folds are spaced at a distance d at least equal to the thickness of the active free end of the lever 45 or of the lever 46.

Claims

REVENDICATIONS
1. Pince destinée à serrer un collier de serrage (28 ; 28') qui présente deux portions terminales (28A, 28B ; 28'A, 28'B) respectivement munies d'une saillie radiale dénommée oreille (30) et d'un crochet (29) apte à être accroché sur ladite oreille pour réaliser le serrage du collier, la pince comprenant deux mâchoires (18 ; 20) respectivement aptes à coopérer avec l'oreille et avec le crochet et à être rapprochées l'une de l'autre pour accrocher le crochet sur l'oreille, caractérisée en ce que au moins une première mâchoire (18 ; 20) est équipée d'un organe de retenue (45 ; 46) mobile par rapport à elle entre une position de retenue (Fig. 3) dans laquelle cet organe de retenue est apte à coopérer avec au moins l'un des éléments constitués par l'oreille (30) et par le crochet (29) pour retenir ledit élément contre ladite mâchoire et une position de relâchement (Fig; 6) dans laquelle il libère ledit élément par rapport à cette mâchoire.1. Pliers intended to tighten a clamp (28; 28 ') which has two end portions (28A, 28B; 28'A, 28'B) respectively provided with a radial projection called ear (30) and with a hook (29) able to be hooked on said ear to achieve the tightening of the collar, the clamp comprising two jaws (18; 20) respectively able to cooperate with the ear and with the hook and to be brought closer to each other another for hanging the hook on the ear, characterized in that at least one first jaw (18; 20) is equipped with a retaining member (45; 46) movable relative to it between a retaining position (Fig. 3) in which this retaining member is able to cooperate with at least one of the elements constituted by the ear (30) and by the hook (29) to retain said element against said jaw and a release position (Fig; 6) in which it releases said element relative to this jaw.
2. Pince selon la revendication 1, caractérisée' en ce que la première mâchoire (18 ; 20) comporte une surface d'appui (43 ; 44) tournée vers la deuxième mâchoire (20 ; 18) et en ce que l'organe de retenue (45 ; 46) est disposé au-delà de cette surface d'appui dans le sens allant vers ladite deuxième mâchoire.2. Pliers according to claim 1, characterized in that the first jaw (18; 20) has a bearing surface (43; 44) facing the second jaw (20; 18) and in that the member retainer (45; 46) is disposed beyond this bearing surface in the direction towards said second jaw.
3. Pince selon la revendication 1 ou 2, caractérisée en ce que l'organe de retenue (45 ; 46) est mobile transversalement (T) à la direction (D) dans laquelle les mâchoires (18 ; 20) sont déplacées pour être rapprochées ou éloignées l'une de l'autre.3. Pliers according to claim 1 or 2, characterized in that the retaining member (45; 46) is movable transversely (T) to the direction (D) in which the jaws (18; 20) are moved to be brought together or distant from each other.
4. Pince selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'elle comporte des moyens de rappel élastique (52) sollicitant l'organe de retenue (45 ; 46) en permanence vers sa position de retenue.4. Pliers according to any one of claims 1 to 3, characterized in that it comprises elastic return means (52) urging the retaining member (45; 46) permanently towards its retaining position.
5. Pince selon l'une quelconque des revendications 1 à 4, caractérisée en ce qu'elle comporte un organe de sollicitation (53 ; 54) apte, lors du serrage de la pince, à coopérer avec l'organe de retenue (45 ; 46) pour solliciter ledit organe de retenue vers sa position de relâchement (Fig. 6). 5. Clamp according to any one of claims 1 to 4, characterized in that it comprises a biasing member (53; 54) capable, when tightening the clamp, to cooperate with the retaining member (45; 46) to urge said retaining member towards its release position (Fig. 6).
6. Pince selon l'une quelconque des revendications 1 à 5, caractérisée en ce que l'organe de retenue est formé par un levier (45 ; 46) monté pivotant (A45 ; A46) sur la première mâchoire (18 ; 20). 6. Pliers according to any one of claims 1 to 5, characterized in that the retaining member is formed by a lever (45; 46) pivotally mounted (A45; A46) on the first jaw (18; 20).
7. Pince selon l'une quelconque des revendications 1 à 6, caractérisée en ce que les mâchoires (18 ; 20) sont montées sur, respectivement, un premier et un deuxième bras de support (14 ; 16) en étant aptes à pivoter par rapport à ces bras autour d'un axe d'orientation (B) sensiblement parallèle à la direction (D) dans laquelle les mâchoires sont déplacées pour être rapprochées ou éloignées l'une de l'autre.7. Clamp according to any one of claims 1 to 6, characterized in that the jaws (18; 20) are mounted on, respectively, a first and a second support arm (14; 16) being able to pivot by relative to these arms about an orientation axis (B) substantially parallel to the direction (D) in which the jaws are moved to be close to or distant from each other.
8. Pince selon la revendication 7, caractérisée en ce qu'elle comporte des moyens (80) pour solidariser les deux mâchoires (18 ; 20) en rotation dans leur pivotement autour de l'axe d'orientation (B). 8. Pliers according to claim 7, characterized in that it comprises means (80) for securing the two jaws (18; 20) in rotation in their pivoting about the orientation axis (B).
9. Pince selon la revendication 8, caractérisée en ce que les deux mâchoires sont solidarisées en rotation par un axe de liaison articulé (80), apte à adopter une configuration d'extension (Fig. 2) lorsque les mâchoires (18 ; 20) sont écartées et une configuration de repli (Fig. 5) lorsque les mâchoires sont serrées l'une contre l'autre. 9. Pliers according to claim 8, characterized in that the two jaws are secured in rotation by an articulated connecting pin (80), capable of adopting an extension configuration (Fig. 2) when the jaws (18; 20) are moved apart and a fold-back configuration (Fig. 5) when the jaws are pressed together.
10. Pince selon la revendication 9, caractérisée en ce que l'axe de liaison (80) comprend un tronçon d'axe rigide (82) relié à chacune des deux mâchoires (18 ; 20) par une bielle (84 ; 86).10. Clamp according to claim 9, characterized in that the connecting axis (80) comprises a rigid axis section (82) connected to each of the two jaws (18; 20) by a connecting rod (84; 86).
11. Pince selon la revendication 5 et selon la revendication 9 ou 10, caractérisée en ce que l'organe de sollicitation (53 ; 54) est solidaire de l'axe de liaison (80).11. Pliers according to claim 5 and according to claim 9 or 10, characterized in that the biasing member (53; 54) is integral with the connecting axis (80).
12. Pince selon l'une quelconque des revendications 1 à 11 , caractérisée en ce que les deux mâchoires (18 ; 20) sont identiques.12. Pliers according to any one of claims 1 to 11, characterized in that the two jaws (18; 20) are identical.
13. Ensemble d'une pince selon l'une quelconque des revendications 1 à 12 et d'un collier de serrage (28) destiné à être serré à l'aide d'une pince, caractérisé en ce que l'oreille (30) comprend deux plis (30B ; 30C) écartés l'un de l'autre de manière à ménager entre eux un dégagement (30') dans lequel l'organe de retenue (45, 46) est apte à être introduit. 13. Set of pliers according to any one of claims 1 to 12 and a clamp (28) intended to be tightened using pliers, characterized in that the ear (30) comprises two folds (30B; 30C) spaced from each other so as to provide between them a clearance (30 ') in which the retaining member (45, 46) is adapted to be introduced.
PCT/FR2001/001423 2000-05-12 2001-05-11 Collar clamping pliers WO2001085396A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BR0110494-2A BR0110494A (en) 2000-05-12 2001-05-11 Ring tightening pliers
JP2001582035A JP2004515368A (en) 2000-05-12 2001-05-11 Pliers to tighten the collar
US10/275,510 US20030167881A1 (en) 2000-05-12 2001-05-11 Collar clamping pliers
EP01931831A EP1280633B1 (en) 2000-05-12 2001-05-11 Collar clamping pliers
KR1020027015183A KR20020097265A (en) 2000-05-12 2001-05-11 Pliers for tightening a collar
DE60114601T DE60114601T2 (en) 2000-05-12 2001-05-11 PLIERS FOR TIGHTENING CLAMPS
AU2001258523A AU2001258523A1 (en) 2000-05-12 2001-05-11 Collar clamping pliers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0006052A FR2808714B1 (en) 2000-05-12 2000-05-12 PLIERS TO TIGHTEN A NECKLACE
FR00/06052 2000-05-12

Publications (1)

Publication Number Publication Date
WO2001085396A1 true WO2001085396A1 (en) 2001-11-15

Family

ID=8850143

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2001/001423 WO2001085396A1 (en) 2000-05-12 2001-05-11 Collar clamping pliers

Country Status (8)

Country Link
EP (1) EP1280633B1 (en)
JP (1) JP2004515368A (en)
KR (1) KR20020097265A (en)
AU (1) AU2001258523A1 (en)
BR (1) BR0110494A (en)
DE (1) DE60114601T2 (en)
FR (1) FR2808714B1 (en)
WO (1) WO2001085396A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747446A (en) * 1953-07-08 1956-05-29 George J Eder Pliers with pivotally attached cam actuated supplementary jaws
US3216291A (en) * 1964-04-07 1965-11-09 K D Mfg Co Hose-clamp deforming pliers
US3872747A (en) * 1974-01-10 1975-03-25 Amerace Corp Hand tool for installing wire fabric fence clamps
US4610187A (en) * 1985-11-22 1986-09-09 Wittek Industries, Inc. Tool for applying and removing a spring clamp
US4633558A (en) * 1986-02-27 1987-01-06 Wittek Industries, Inc. Cam action tool for applying a spring clamp
DE9216463U1 (en) * 1992-12-03 1993-01-14 Hazet-Werk Hermann Zerver Gmbh & Co Kg, 5630 Remscheid Spring band clamp pliers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747446A (en) * 1953-07-08 1956-05-29 George J Eder Pliers with pivotally attached cam actuated supplementary jaws
US3216291A (en) * 1964-04-07 1965-11-09 K D Mfg Co Hose-clamp deforming pliers
US3872747A (en) * 1974-01-10 1975-03-25 Amerace Corp Hand tool for installing wire fabric fence clamps
US4610187A (en) * 1985-11-22 1986-09-09 Wittek Industries, Inc. Tool for applying and removing a spring clamp
US4633558A (en) * 1986-02-27 1987-01-06 Wittek Industries, Inc. Cam action tool for applying a spring clamp
DE9216463U1 (en) * 1992-12-03 1993-01-14 Hazet-Werk Hermann Zerver Gmbh & Co Kg, 5630 Remscheid Spring band clamp pliers

Also Published As

Publication number Publication date
FR2808714B1 (en) 2002-09-06
JP2004515368A (en) 2004-05-27
FR2808714A1 (en) 2001-11-16
EP1280633B1 (en) 2005-11-02
DE60114601D1 (en) 2005-12-08
BR0110494A (en) 2003-04-01
KR20020097265A (en) 2002-12-31
EP1280633A1 (en) 2003-02-05
DE60114601T2 (en) 2006-08-10
AU2001258523A1 (en) 2001-11-20

Similar Documents

Publication Publication Date Title
EP1281878B1 (en) Pivot pin between two elements
EP0847710B1 (en) Spring hinge for hair article
EP0077277A1 (en) Method and device for applying haemostatic clips, and haemostatic clips for use with this device
WO2008122716A1 (en) Tightening device with swivelling handling arm and applicance including such a device
CA2143159A1 (en) Bicycle rack securing device; rack comprising said device
EP0145556A1 (en) Device for mounting and fixing a bulb, especially for a vehicle headlamp
FR2993853A1 (en) BICYCLE FOLDING HANDLE LOCK MECHANISM
FR2761452A1 (en) CLAMP FOR CONNECTING TWO TUBES
EP1654950A1 (en) Bracelet fastener
FR2883208A1 (en) TOOL HOLDER CHUCK FOR ROTATING MACHINE HAVING LOCKING MEANS
EP2520477A1 (en) Rapid locking pin for use on a cycle
EP0571294A1 (en) Pipe clamp provided with a screw
EP0286561B1 (en) Clamp having hinged clamping screw
EP1110278A1 (en) Locking device for electrical connector
EP1280633B1 (en) Collar clamping pliers
EP0469939B1 (en) Device for connecting two articles with several attachment points
FR2622138A1 (en) GRIPPING TOOL, IN PARTICULAR FOR A TELEMANIPULATION CABLE CONNECTOR PLUG
FR2765532A1 (en) Hinge for folding vehicle seat frame
FR2663888A1 (en) Articulation for tilting a removable seat part of a vehicle rear seat
EP1541791A1 (en) Device for holding a bonnet support rod
FR2796344A1 (en) Automobile rear seat anchoring and articulation mechanism comprises cheek web connected to seat part, with web immobilizer comprising two hooks clamping pegs integral with floor
FR3102695A1 (en) Hand tool for holding a metal pipe fixedly relative to a support
FR3084604A1 (en) CLAMP FOR A CLAMP
FR2977821A1 (en) Grip screw clamp for clamping small contacting pieces used in e.g. joinery work, has legs extending in parallel, and articulation connecting opposite ends of legs such that legs and articulation are provided in U-shape
EP1280632B1 (en) Reducer pliers

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ CZ DE DE DK DK DM DZ EC EE EE ES FI FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 10275510

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 2001931831

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 1020027015183

Country of ref document: KR

WWP Wipo information: published in national office

Ref document number: 1020027015183

Country of ref document: KR

WWP Wipo information: published in national office

Ref document number: 2001931831

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 2001931831

Country of ref document: EP