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EP1352453A1 - Pliers for crimping thimbles on electric cables - Google Patents

Pliers for crimping thimbles on electric cables

Info

Publication number
EP1352453A1
EP1352453A1 EP02711974A EP02711974A EP1352453A1 EP 1352453 A1 EP1352453 A1 EP 1352453A1 EP 02711974 A EP02711974 A EP 02711974A EP 02711974 A EP02711974 A EP 02711974A EP 1352453 A1 EP1352453 A1 EP 1352453A1
Authority
EP
European Patent Office
Prior art keywords
axis
branch
crimping
relative
upper branch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02711974A
Other languages
German (de)
French (fr)
Inventor
Frédéric DELHUMEAU
Laurent Merle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FCI SA
Original Assignee
FCI SA
Framatome Connectors International SAS
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 FCI SA, Framatome Connectors International SAS filed Critical FCI SA
Publication of EP1352453A1 publication Critical patent/EP1352453A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/042—Hand tools for crimping
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/532—Conductor
    • Y10T29/53209—Terminal or connector
    • Y10T29/53213—Assembled to wire-type conductor
    • Y10T29/53222—Means comprising hand-manipulatable implement
    • Y10T29/53226—Fastening by deformation

Definitions

  • the present invention relates to crimping pliers in particular for attaching terminals to electric cables.
  • the ends of the electric cables must include connecting elements such as lugs of different types in order to be able to ensure the connections according to the applications.
  • the method of attachment always remains the same and consists of a deformation of part of the terminal forming a barrel in which a cable is previously introduced. This deformation action is called crimping.
  • the dimensions of the terminals vary according to the applications but necessarily remain reduced since the clamp is actuated manually.
  • a crimping tool which comprises a movable jaw and a reduction lever.
  • any element interposed between the two jaws undergoes the multiplied clamping force obtained by the system of levers.
  • a tool of the general type is known above, the two branches of which are connected together by a hinged link, on the one hand, on a fixed axis integral with the branch carrying the fixed jaw and , on the other hand, on a movable axis in an oblong window formed in the other branch.
  • the fixed jaw can advantageously be equipped with a crown carrying a plurality of imprints with means of indexing this crown so as to maintain the desired imprint opposite the movable jaw during the action Clamping.
  • pliers are made of light metallic materials such as aluminum alloys in order to find a compromise between different factors such as cost / quality / performance.
  • a crimping pliers which makes it possible in particular to: - reduce the forces in line with all the pivot points to a value lower than that of the force exerted at the level of the jaws.
  • the subject of the present invention is a crimping pliers, in particular of lugs on electric cables, comprising an upper branch carrying a fixed jaw with at least one imprint at its end, a lower branch, a connecting rod, interposed between this upper branch and this lower branch, articulated around axes A1, A2, a movable jaw with an imprint, articulated with respect to the upper branch around an axis A3 and with respect to the lower branch around an axis A4, characterized in that the distance between the axes A1 and A2 is substantially equal to the distance between the axes A3 and A4 and in that the upper branch has an angular point defining an upper branch body and an upper branch head, the internal angle ⁇ , oriented towards the lower branch, being less than 180 °.
  • the circle of displacement of the axis A2 with respect to the axis A1 has a substantially identical diameter.
  • the circle of displacement of the axis A4 with respect to the axis A2 and the circle of displacement of the axis A4 with respect to to the A3 axis have a substantially identical diameter.
  • Such a clamp is remarkable in particular in that the particular arrangement of the articulation axes makes it possible to appreciably balance the forces at the level of the various axes while generating a significant force at the level of the jaws and this, with a limited opening of the branches.
  • the angle ⁇ is 1 20 °.
  • the axis A3 of articulation of the movable jaw is located at the right of the angular point.
  • the axis A1 is disposed behind the axis A2 relative to the jaws.
  • the clamp is also characterized in that different angles have defined values:
  • the angle ⁇ defined by the segments [A4-A3] and [A4-M2] is less than 90 °.
  • the fixed jaw comprises a crown provided with imprints, mounted for rotation about an axis and means for indexing in position of this crown.
  • FIG. 1 a perspective view of a crimping tool according to the present invention, in the closed position
  • FIG. 3 a simplified side elevation view of the clamp according to the present invention, in the open position
  • FIG. 4 a simplified view in lateral elevation of the clamp according to the present invention, in the closed position
  • a link 22 is interposed between the branches 1 0 and 1 2. This link is mounted articulated around the axis A1 relative to the upper branch 1 0 and around the axis A2 relative to the lower branch 1 2. The axis A1 is located behind the axis A2 relative to the jaws.
  • the upper branch 10 carries a jaw 24 fixed at its end with an imprint M 1.
  • This branch also has an angular point 26 defining a body 10-1 upper branch and a head 10-2 upper branch.
  • the internal angle ⁇ , oriented towards the lower branch and defined by the body 1 0-1 and the head 1 0-2 of the upper branch is less than 180 °, preferably of the order of 1 20 °.
  • the head 1 0-2 of the upper branch is equipped with a crown 28 rotatably mounted about an axis 30.
  • This crown has several indentations 32 on its periphery and indexing means, not shown, allowing one of these footprints 32 to be maintained in a fixed position.
  • a movable jaw 34 is interposed between the upper and lower branches. This jaw is articulated around an axis A3 relative to the upper branch 1 0 and around an axis A4 relative to the lower branch 1 2. This jaw carries an M2 imprint, at its end, intended to come opposite screw of the impression M 1 when the clamp is closed, as will be explained later.
  • the angle 1 defined by the segments [A4-A3] and [A4-M2] is also of a determined value, less than 90 °. As for the distances d [A1, A2] and d [A3, A4], they are substantially equal.
  • a third angle, the opening angle ⁇ , must be maintained at a maximum value, preferably a value less than 50 °.
  • FIGS. 5A and 5B it is possible to compare the circles of displacement of the different axes. It can be seen that the main axes of the clamp according to the present invention move relative to one another in circles having a substantially identical diameter. This translates a balanced distribution of the forces on each of the axes because the lever arms necessary for the reduction are of the same order of length.
  • the circle C2-1 corresponds to the displacement of the axis A2 relative to the axis A1.
  • the circle C4-2 corresponds to the displacement of the axis A4 relative to the axis A2.
  • the circle C4-3 corresponds to the displacement of the A4 axis relative to the A3 axis.
  • the axis A2 is found at the top of a force recovery vault, defined by the two segments [A1 -A3] and [A3- (30)] or [A3-M 1] depending on the arrangements. This strengthens resistance at this point.
  • the angle ⁇ remains in values less than 90 °.
  • the clamp thus produced has a certain ergonomics, essentially due to the reduced degree of opening of the branches as well as balanced forces on the different axes, thus increasing the longevity of this clamp.
  • Such pliers can be made of composite materials without fear of points of weakness generated by excessive localized forces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

The invention concerns a pair of pliers comprising two branches (10) and (12), a fixed jaw and a mobile jaw (34), articulated relative to the two branches and a hinge link interposed between said two branches. Said clamp has an angular point for forming an arch perpendicular to which is arranged the axis A3. The inventive clamp is further provided with predetermined angular values and length-characteristic size ratio.

Description

PINCE DE SERTISSAGE NOTAMMENT DE COSSES SUR DES CABLES CRIMPING PLIERS, ESPECIALLY OF TERMINALS ON CABLES
ELECTRIQUESELECTRICAL
La présente invention concerne une pince de sertissage notamment pour rapporter des cosses sur des câbles électriques.The present invention relates to crimping pliers in particular for attaching terminals to electric cables.
Les extrémités des câbles électriques doivent comporter des éléments de liaison tels que des cosses de différents types afin de pouvoir assurer les connexions en fonction des applications.The ends of the electric cables must include connecting elements such as lugs of different types in order to be able to ensure the connections according to the applications.
Néanmoins, le mode de fixation reste toujours le même et consiste en une déformation d'une partie de la cosse formant un fût dans lequel est préalablement introduit un câble. Cette action de déformation est appelée sertissage. Les dimensions des cosses varient suivant les applications mais restent nécessairement réduites puisque la pince est actionnée manuellement.However, the method of attachment always remains the same and consists of a deformation of part of the terminal forming a barrel in which a cable is previously introduced. This deformation action is called crimping. The dimensions of the terminals vary according to the applications but necessarily remain reduced since the clamp is actuated manually.
Par contre, les efforts nécessaires pour obtenir un sertissage de qualité des cosses sur les câbles restent importants et il est prévu un agencement de ces pinces avec des leviers permettant de démultiplier l'effort manuel exercé par l'opérateur.On the other hand, the efforts necessary to obtain a quality crimping of the terminals on the cables remain significant and there is an arrangement of these pliers with levers making it possible to increase the manual effort exerted by the operator.
Par le brevet US-A-2 81 4 222, on connaît un pince de sertissage qui comprend un mors mobile et un levier démultiplicateur.From US-A-2 81 4 222, a crimping tool is known which comprises a movable jaw and a reduction lever.
Cette pince est simple mais la branche supérieure rectiligne supporte tous les efforts engendrés par la pression du mors mobile et l'axe de rotation du mors mobile est fortement sollicité. L'effort de sertissage est faiblement démultiplié. De façon générale, les outils de l'art antérieur plus récent, notamment ceux décrits dans les demandes de brevet EP-A-536 641 et EP-A-536 652, comprennent une première branche dont l'extrémité constitue un mors fixe et une seconde branche qui actionne par un système de leviers un mors mobile en rotation autour d'un point pivot solidaire de la première branche, l'action de serrage des branches par l'opérateur provoquant le plaquage du mors mobile contre le mors fixe avec un effort de sertissage important.This clamp is simple but the rectilinear upper branch supports all the forces generated by the pressure of the movable jaw and the axis of rotation of the movable jaw is highly stressed. The crimping effort is slightly reduced. In general, the tools of the more recent prior art, in particular those described in patent applications EP-A-536,641 and EP-A-536,652, comprise a first branch, the end of which constitutes a fixed jaw and a second branch which actuates by a system of levers a jaw movable in rotation around a pivot point secured to the first branch, the action of clamping of the branches by the operator causing the movable jaw to be pressed against the fixed jaw with an effort important crimping.
Tout élément interposé entre les deux mors subit l'effort de serrage démultiplié obtenu par le système de leviers. Par ailleurs, par US 5 280 71 6 on connaît un outil du type général ci- dessus dont les deux branches sont reliées entres elles par une biellette articulée, d'une part, sur un axe fixe solidaire de la branche portant le mors fixe et, d'autre part, sur un axe mobile dans une fenêtre oblongue ménagée dans l'autre branche. De façon également connue, le mors fixe peut avantageusement être équipé d'une couronne portant une pluralité d'empreintes avec des moyens d'indexation de cette couronne en sorte de maintenir l'empreinte souhaitée en vis à vis du mors mobile durant l'action de serrage.Any element interposed between the two jaws undergoes the multiplied clamping force obtained by the system of levers. Furthermore, from US 5 280 71 6, a tool of the general type is known above, the two branches of which are connected together by a hinged link, on the one hand, on a fixed axis integral with the branch carrying the fixed jaw and , on the other hand, on a movable axis in an oblong window formed in the other branch. In a manner also known, the fixed jaw can advantageously be equipped with a crown carrying a plurality of imprints with means of indexing this crown so as to maintain the desired imprint opposite the movable jaw during the action Clamping.
Dans les agencements connus, il est prévu une forte démultiplication mais une faible ouverture des mors, ce qui n'est pas particulièrement adapté pour l'opérateur surtout quand les cosses avant sertissage présentent un diamètre important. Par contre il convient de réduire l'ouverture des branches pour rendre les manipulations plus pratiques.In known arrangements, a large reduction is provided but a small opening of the jaws, which is not particularly suitable for the operator, especially when the lugs before crimping have a large diameter. By cons should reduce the opening of the branches to make handling more practical.
Il faut de plus éviter que les efforts au niveau du point pivot soient supérieurs aux efforts transmis au niveau des mors eux-mêmes car dans ce cas, le rendement n'est pas optimal.It is also necessary to avoid that the forces at the pivot point are greater than the forces transmitted at the level of the jaws themselves because in this case, the yield is not optimal.
Ces pinces sont réalisées dans des matériaux métalliques légers tels que des alliages d'aluminium afin de trouver un compromis entre les différents facteurs tels que coût/qualité/performance. Afin d'améliorer encore ces facteurs, il est prévu de réaliser de telles pinces avec des matériaux composites comme des compositions de polymères chargées et renforcées de fibres. Néanmoins, plus particulièrement dans le cas d'une réalisation en matériaux composites, il faut poursuivre plusieurs objectifs et la présente invention propose dans ce but une pince de sertissage qui permet notamment de : - réduire les efforts au droit de tous les points pivots à une valeur inférieure à celle de l'effort exercé au niveau des mors.These pliers are made of light metallic materials such as aluminum alloys in order to find a compromise between different factors such as cost / quality / performance. In order to further improve these factors, provision is made to make such clamps with composite materials such as polymer compositions filled and reinforced with fibers. However, more particularly in the case of an embodiment made of composite materials, it is necessary to pursue several objectives and the present invention proposes for this purpose a crimping pliers which makes it possible in particular to: - reduce the forces in line with all the pivot points to a value lower than that of the force exerted at the level of the jaws.
- générer une ouverture importante des mors pour un effort de démultiplication donné, mais avec une ouverture limitée des branches, et- generate a large opening of the jaws for a given reduction effort, but with a limited opening of the branches, and
- conserver un effort de démultiplication important pour garantir un sertissage de qualité.- maintain a significant reduction effort to guarantee quality crimping.
A cet effet, la présente invention a pour objet une pince de sertissage, notamment de cosses sur des câbles électriques, comprenant une branche supérieure portant un mors fixe avec au moins une empreinte à son extrémité, une branche inférieure, une biellette, interposée entre cette branche supérieure et cette branche inférieure, articulée autour d'axes A1 , A2, un mors mobile avec une empreinte, articulé par rapport à la branche supérieure autour d'un axe A3 et par rapport à la branche inférieure autour d'un axe A4, caractérisée en ce que la distance entre les axes A1 et A2 est sensiblement égale à la distance entre les axes A3 et A4 et en ce que la branche supérieure présente un point anguleux définissant un corps de branche supérieure et une tête de branche supérieure, l'angle α interne, orienté vers la branche inférieure, étant inférieur à 1 80° .To this end, the subject of the present invention is a crimping pliers, in particular of lugs on electric cables, comprising an upper branch carrying a fixed jaw with at least one imprint at its end, a lower branch, a connecting rod, interposed between this upper branch and this lower branch, articulated around axes A1, A2, a movable jaw with an imprint, articulated with respect to the upper branch around an axis A3 and with respect to the lower branch around an axis A4, characterized in that the distance between the axes A1 and A2 is substantially equal to the distance between the axes A3 and A4 and in that the upper branch has an angular point defining an upper branch body and an upper branch head, the internal angle α, oriented towards the lower branch, being less than 180 °.
Selon une autre caractéristique, le cercle de déplacement de l'axe A2 par rapport à l'axe A1 , le cercle de déplacement de l'axe A4 par rapport à l'axe A2 et le cercle de déplacement de l'axe A4 par rapport à l'axe A3 ont un diamètre sensiblement identique.According to another characteristic, the circle of displacement of the axis A2 with respect to the axis A1, the circle of displacement of the axis A4 with respect to the axis A2 and the circle of displacement of the axis A4 with respect to to the A3 axis have a substantially identical diameter.
Une telle pince est remarquable notamment en ce que l'agencement particulier des axes d'articulation permet d'équilibrer sensiblement les forces au niveau des différents axes tout en générant un effort important au niveau des mors et ce, avec une ouverture limitée des branches.Such a clamp is remarkable in particular in that the particular arrangement of the articulation axes makes it possible to appreciably balance the forces at the level of the various axes while generating a significant force at the level of the jaws and this, with a limited opening of the branches.
Selon un agencement caractéristique l'angle α est de 1 20° . Selon une autre caractéristique, l'axe A3 d'articulation du mors mobile est situé au droit du point anguleux.According to a characteristic arrangement the angle α is 1 20 °. According to another characteristic, the axis A3 of articulation of the movable jaw is located at the right of the angular point.
De plus, l'axe A1 est disposé en arrière de l'axe A2 par rapport aux mors. La pince est également caractérisée en ce que différents angles ont des valeurs définies :In addition, the axis A1 is disposed behind the axis A2 relative to the jaws. The clamp is also characterized in that different angles have defined values:
- l'angle β défini par les segments [A4-A3] et [A4-M2] est inférieur à 90° .- the angle β defined by the segments [A4-A3] and [A4-M2] is less than 90 °.
- l'angle δ défini par les segments [A1 -A3] et [A1 -A2] est inférieur à 90°, et- the angle δ defined by the segments [A1 -A3] and [A1 -A2] is less than 90 °, and
- l'angle γ d'ouverture des branches supérieure (1 0) et inférieure ( 1 2) est inférieur à 50° . Selon une variante perfectionnée, le mors fixe comprend une couronne munie d'empreintes, montée à rotation autour d'un axe et des moyens d'indexation en position de cette couronne.- The opening angle γ of the upper (1 0) and lower (1 2) branches is less than 50 °. According to an improved variant, the fixed jaw comprises a crown provided with imprints, mounted for rotation about an axis and means for indexing in position of this crown.
La présente invention est maintenant décrite en détail en regard d'un mode de réalisation préférentiel non limitatif illustré sur les dessins annexés parmi lesquels les différentes figures représentent :The present invention is now described in detail with regard to a preferred nonlimiting embodiment illustrated in the appended drawings among which the various figures represent:
- figure 1 , une vue en perspective d'une pince de sertissage selon la présente invention, en position fermée,FIG. 1, a perspective view of a crimping tool according to the present invention, in the closed position,
- figure 2, une vue en élévation latérale de cette même pince,- Figure 2, a side elevational view of the same clamp,
- figure 3, une vue simplifiée en élévation latérale de la pince selon la présente invention, en position ouverte,FIG. 3, a simplified side elevation view of the clamp according to the present invention, in the open position,
- figure 4, une vue simplifiée en élévation latérale de la pince selon la présente invention, en position fermée,FIG. 4, a simplified view in lateral elevation of the clamp according to the present invention, in the closed position,
- figure 5A et 5B, des vues de la même pince en positions ouverte et fermée montrant les déplacements suivant des cercles des principaux points d'articulation.- Figure 5A and 5B, views of the same clamp in open and closed positions showing the movements in circles of the main points of articulation.
La pince selon la présente invention, représentée sur la figure 1 , comprend une branche 1 0 supérieure et une branche 1 2 inférieure. Chaque branche est composée de deux plaques ou venue de moulage en libérant un espace 1 4 et 1 6 central permettant les déplacements des différentes pièces. Une butée 1 8 de sécurité est portée par la branche supérieure pour venir s'interposer entre les deux branches. Cette butée interdit dans tous les cas, la mise en contact des branches au droit de la zone de prise en main. En effet, en cas de rupture d'une pièce ou d'une erreur de maniement, il convient d'éviter tout pincement accidentel des doigts de l'opérateur.The clamp according to the present invention, shown in Figure 1, comprises an upper branch 1 0 and a lower branch 1 2. Each branch is composed of two plates or molded in freeing a central space 1 4 and 1 6 allowing the movements of the different parts. A safety stopper 1 8 is carried by the upper branch to come to be interposed between the two branches. This stop prohibits in all cases, the contacting of branches at the right of the grip area. In fact, in the event of a part breaking or an error in handling, it is necessary to avoid any accidental pinching of the operator's fingers.
Dans le cas d'une réalisation métallique, les plaques sont rivetées et les rivets 20 apparaissent sur les figures.In the case of a metallic embodiment, the plates are riveted and the rivets 20 appear in the figures.
Une biellette 22 est interposée entre les branches 1 0 et 1 2. Cette biellette est montée articulée autour de l'axe A1 par rapport à la branche 1 0 supérieure et autour de l'axe A2 par rapport à la branche 1 2 inférieure. L'axe A1 se trouve en arrière de l'axe A2 par rapport aux mors.A link 22 is interposed between the branches 1 0 and 1 2. This link is mounted articulated around the axis A1 relative to the upper branch 1 0 and around the axis A2 relative to the lower branch 1 2. The axis A1 is located behind the axis A2 relative to the jaws.
La branche 1 0 supérieure porte un mors 24 fixe à son extrémité avec une empreinte M 1 . Cette branche présente de plus un point 26 anguleux définissant un corps 1 0-1 de branche supérieure et une tête 10-2 de branche supérieure.The upper branch 10 carries a jaw 24 fixed at its end with an imprint M 1. This branch also has an angular point 26 defining a body 10-1 upper branch and a head 10-2 upper branch.
L'angle α interne, orienté vers la branche inférieure et défini par le corps 1 0-1 et la tête 1 0-2 de branche supérieure est inférieur à 1 80° , de l'ordre de 1 20° de préférence.The internal angle α, oriented towards the lower branch and defined by the body 1 0-1 and the head 1 0-2 of the upper branch is less than 180 °, preferably of the order of 1 20 °.
Dans le mode de réalisation préférentiel représenté, la tête 1 0-2 de branche supérieure est équipée d'une couronne 28 montée à rotation autour d'un axe 30. Cette couronne comporte plusieurs empreintes 32 sur sa périphérie et des moyens d'indexage, non représentés, permettant de maintenir l'une M 1 de ces empreintes 32 en position fixe.In the preferred embodiment shown, the head 1 0-2 of the upper branch is equipped with a crown 28 rotatably mounted about an axis 30. This crown has several indentations 32 on its periphery and indexing means, not shown, allowing one of these footprints 32 to be maintained in a fixed position.
Ceci n'est qu'un perfectionnement de la pince selon l'invention mais la branche 10 supérieure pourrait porter une empreinte unique, fixe et de profil déterminé, à son extrémité sans changer les éléments constitutifs de la pince, en solutionnant les problèmes posés de la même façon et en apportant les mêmes avantages.This is only an improvement of the clamp according to the invention, but the upper branch 10 could bear a single, fixed imprint of determined profile, at its end without changing the constituent elements of the clamp, by solving the problems posed by the same way and bringing the same benefits.
Un mors 34 mobile est interposé entre les branches supérieure et inférieure. Ce mors est articulé autour d'un axe A3 par rapport à la branche 1 0 supérieure et autour d'un axe A4 par rapport à la branche 1 2 inférieure. Ce mors porte une empreinte M2, à son extrémité, prévue pour venir en en vis à vis de l'empreinte M 1 lorsque la pince est fermée, comme cela sera expliqué ultérieurement.A movable jaw 34 is interposed between the upper and lower branches. This jaw is articulated around an axis A3 relative to the upper branch 1 0 and around an axis A4 relative to the lower branch 1 2. This jaw carries an M2 imprint, at its end, intended to come opposite screw of the impression M 1 when the clamp is closed, as will be explained later.
L'angle 1 défini par les segments [A4-A3] et [A4-M2] est également d'une valeur déterminée, inférieure à 90° . Quant aux distances d[A1 ,A2] et d[A3,A4], elles sont sensiblement égales.The angle 1 defined by the segments [A4-A3] and [A4-M2] is also of a determined value, less than 90 °. As for the distances d [A1, A2] and d [A3, A4], they are substantially equal.
On note dans l'agencement présenté que l'axe A1 d'articulation est en arrière sur la branche supérieure en sorte d'augmenter la distance d[A1 ,A3].It is noted in the arrangement presented that the axis of articulation A1 is behind the upper branch so as to increase the distance d [A1, A3].
De plus, ceci permet de rallonger la distance d[A1 ,A2] pour la rendre sensiblement identique à la distance d[A3,A4], comme cela a été indiqué précédemment. Ainsi d[A1 ,A2] / d[A3,A4] est proche de 1 .In addition, this makes it possible to lengthen the distance d [A1, A2] to make it substantially identical to the distance d [A3, A4], as indicated above. Thus d [A1, A2] / d [A3, A4] is close to 1.
Un troisième angle, l'angle d'ouverture γ , doit être maintenu à une valeur maximale, de préférence une valeur inférieure à 50° .A third angle, the opening angle γ, must be maintained at a maximum value, preferably a value less than 50 °.
A partir des figures 5A et 5B, on peut comparer les cercles de déplacement des différents axes. On constate que les axes principaux de la pince selon la présente invention se déplacent les uns par rapport aux autres suivant des cercles ayant un diamètre sensiblement identique. Ceci traduit une répartition équilibrée des efforts sur chacun des axes car les bras de levier nécessaires à la démultiplication sont du même ordre de longueur. Le cercle C2-1 correspond au déplacement de l'axe A2 par rapport à l'axe A1 .From FIGS. 5A and 5B, it is possible to compare the circles of displacement of the different axes. It can be seen that the main axes of the clamp according to the present invention move relative to one another in circles having a substantially identical diameter. This translates a balanced distribution of the forces on each of the axes because the lever arms necessary for the reduction are of the same order of length. The circle C2-1 corresponds to the displacement of the axis A2 relative to the axis A1.
Le cercle C4-2 correspond au déplacement de l'axe A4 par rapport à l'axe A2.The circle C4-2 corresponds to the displacement of the axis A4 relative to the axis A2.
Le cercle C4-3 correspond au déplacement de l'axe A4 par rapport à l'axe A3.The circle C4-3 corresponds to the displacement of the A4 axis relative to the A3 axis.
On remarque également que l'éloignement de l'axe A1 vers l'arrière par rapport aux agencements de l'art antérieur permet aussi d'éloigner les développements des arcs de cercle décrits par les axes A2 et A4 par rapport aux axes A1 et A3. L'effort exercé par le mors mobile sur le mors fixe est dirigé de M2 versIt should also be noted that the distance of the axis A1 towards the rear relative to the arrangements of the prior art also makes it possible to distance the developments of the arcs of circle described by the axes A2 and A4 relative to the axes A1 and A3 . The force exerted by the movable jaw on the fixed jaw is directed from M2 towards
M 1 ou vers l'axe 30 de la couronne lorsqu'il en est prévu une. L'axe A2 se retrouve au sommet d'une voûte de reprise des efforts, définie par les deux segments [A1 -A3] et [A3-(30)] ou [A3-M 1 ] suivant les agencements. Ceci renforce la résistance en ce point.M 1 or towards the axis 30 of the crown when one is provided. The axis A2 is found at the top of a force recovery vault, defined by the two segments [A1 -A3] and [A3- (30)] or [A3-M 1] depending on the arrangements. This strengthens resistance at this point.
Durant tous les mouvements d'ouverture et surtout de fermeture de la pince, l'angle δ reste dans des valeurs inférieures à 90° .During all the opening and especially closing movements of the clamp, the angle δ remains in values less than 90 °.
La pince ainsi réalisée présente une ergonomie certaine, essentiellement due au degré d'ouverture réduit des branches ainsi que des efforts équilibrés sur les différents axes, augmentant ainsi la longévité de cette pince.The clamp thus produced has a certain ergonomics, essentially due to the reduced degree of opening of the branches as well as balanced forces on the different axes, thus increasing the longevity of this clamp.
Une telle pince peut être réalisée en matériaux composites sans craindre des points de fragilité engendrés par des efforts localisés trop importants. Such pliers can be made of composite materials without fear of points of weakness generated by excessive localized forces.

Claims

R E V E N D I C A T I O N S
1 . Pince de sertissage, notamment de cosses sur des câbles électriques, comprenant une branche (1 0) supérieure portant un mors fixe avec au moins une empreinte (M 1 ) à son extrémité, une branche (1 2) inférieure, une biellette (22), interposée entre cette branche supérieure et cette branche inférieure, articulée autour d'axes (A1 ,A2), un mors (34) mobile avec une empreinte (M2), articulé par rapport à la branche supérieure autour d'un axe (A3) et par rapport à la branche inférieure autour d'un axe (A4), caractérisée en ce que la distance entre les axes A1 et A2 est sensiblement égale à la distance entre les axes A3 et A4 et en ce que la branche supérieure présente un point (26) anguleux définissant un corps (1 0-1 ) de branche supérieure et une tête ( 1 0-2) de branche supérieure, l'angle α interne, orienté vers la branche inférieure, étant inférieur à 1 80° .1. Crimping pliers, in particular of lugs on electric cables, comprising an upper branch (1 0) carrying a fixed jaw with at least one imprint (M 1) at its end, a lower branch (1 2), a connecting rod (22) , interposed between this upper branch and this lower branch, articulated around axes (A1, A2), a jaw (34) movable with an imprint (M2), articulated relative to the upper branch around an axis (A3) and relative to the lower branch around an axis (A4), characterized in that the distance between the axes A1 and A2 is substantially equal to the distance between the axes A3 and A4 and in that the upper branch has a point (26) angular defining a body (1 0-1) of upper branch and a head (1 0-2) of upper branch, the internal angle α, oriented towards the lower branch, being less than 180 °.
2. Pince de sertissage selon la revendication 1 , caractérisée en ce que l'angle α est de 1 20° . 2. Crimping pliers according to claim 1, characterized in that the angle α is 1 20 °.
3. Pince de sertissage selon la revendication 1 ou 2, caractérisée en ce que l'axe A3 d'articulation du mors (34) mobile est situé au droit du point (26) anguleux.3. Crimping pliers according to claim 1 or 2, characterized in that the axis A3 of articulation of the movable jaw (34) is located at the right of the angular point (26).
4. Pince de sertissage selon l'une quelconque des revendications précédentes, caractérisée en ce que l'axe A1 est disposé en arrière de l'axe A2 par rapport aux mors.4. Crimping pliers according to any one of the preceding claims, characterized in that the axis A1 is disposed behind the axis A2 relative to the jaws.
5. Pince de sertissage selon l'une quelconque des revendications précédentes, caractérisée en ce que le cercle (C2-1 ) de déplacement de l'axe A2 par rapport à l'axe A1 , le cercle (C4-2) de déplacement de l'axe A4 par rapport à l'axe A2 et le cercle (C4-3) de déplacement de l'axe A4 par rapport à l'axe A3 ont un diamètre sensiblement identique.5. Crimping pliers according to any one of the preceding claims, characterized in that the circle (C2-1) of displacement of the axis A2 relative to the axis A1, the circle (C4-2) of displacement of the axis A4 relative to the axis A2 and the circle (C4-3) for displacement of the axis A4 relative to the axis A3 have a substantially identical diameter.
6. Pince de sertissage selon l'une quelconque des revendications précédentes, caractérisée en ce que l'angle β défini par les segments [A4-A3] et [A4-M2] est inférieur à 90° . 6. Crimping tool according to any one of the preceding claims, characterized in that the angle β defined by the segments [A4-A3] and [A4-M2] is less than 90 °.
7. Pince de sertissage selon l'une quelconque des revendications précédentes, caractérisée en ce que l'angle δ défini par les segments [A 1 -A3] et [A1 -A2] est inférieur à 90° .7. Crimping tool according to any one of the preceding claims, characterized in that the angle δ defined by the segments [A 1 -A3] and [A1 -A2] is less than 90 °.
8. Pince de sertissage selon l'une quelconque des revendications précédentes, caractérisée en ce que l'angle χ d'ouverture des branches supérieure (1 0) et inférieure ( 1 2) est inférieur à 50° .8. Crimping pliers according to any one of the preceding claims, characterized in that the angle χ of opening of the upper (1 0) and lower (1 2) branches is less than 50 °.
9. Pince de sertissage selon l'une quelconque des revendications précédentes, caractérisée en ce que le mors (24) fixe comprend une couronne (28) munie d'empreintes (32), montée à rotation autour d'un axe (30) et des moyens d'indexation en position de cette couronne.9. Crimping pliers according to any one of the preceding claims, characterized in that the fixed jaw (24) comprises a crown (28) provided with impressions (32), mounted for rotation about an axis (30) and indexing means in position of this crown.
1 0. Pince de sertissage selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle est réalisée en matériaux composites. 1 0. Crimping pliers according to any one of the preceding claims, characterized in that it is made of composite materials.
EP02711974A 2001-01-16 2002-01-16 Pliers for crimping thimbles on electric cables Withdrawn EP1352453A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0100543A FR2819645A1 (en) 2001-01-16 2001-01-16 CRIMPING PLIERS, ESPECIALLY OF TERMINALS ON ELECTRICAL CABLES
FR0100543 2001-01-16
PCT/FR2002/000162 WO2002056429A1 (en) 2001-01-16 2002-01-16 Pliers for crimping thimbles on electric cables

Publications (1)

Publication Number Publication Date
EP1352453A1 true EP1352453A1 (en) 2003-10-15

Family

ID=8858874

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Application Number Title Priority Date Filing Date
EP02711974A Withdrawn EP1352453A1 (en) 2001-01-16 2002-01-16 Pliers for crimping thimbles on electric cables

Country Status (6)

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US (1) US7024911B2 (en)
EP (1) EP1352453A1 (en)
JP (1) JP2004520689A (en)
CA (1) CA2434884A1 (en)
FR (1) FR2819645A1 (en)
WO (1) WO2002056429A1 (en)

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FR2886565B1 (en) * 2005-06-03 2008-09-19 Grehal Pierre Ets Cie Sa CRIMPING TOOL
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US20070251291A1 (en) * 2006-05-01 2007-11-01 Lavallee Michael J Indentation vise-wrenches
US20070261467A1 (en) * 2006-05-15 2007-11-15 Fci Americas Technology, Inc. Angled crimp groove
US20080307934A1 (en) * 2007-06-14 2008-12-18 Rgb Systems, Inc. Multi-purpose cable crimping tool
US20090056509A1 (en) * 2007-07-11 2009-03-05 Anderson Mark C Pliers made of an in situ composite of bulk-solidifying amorphous alloy
USD623493S1 (en) * 2007-08-13 2010-09-14 Cooper Brands, Inc. Pliers
US7536896B1 (en) * 2008-02-21 2009-05-26 Cheng-Hao Hung Pliers
US7637185B2 (en) * 2008-04-11 2009-12-29 Aslan Industries Corporation Plier tool for closing clam-shell type electrical connectors
US20110308057A1 (en) * 2010-06-16 2011-12-22 Vance Abrams Device to open buckles for child safety seats
CN220021872U (en) * 2023-06-25 2023-11-14 诸暨市艾拓五金工具有限公司 Electric power tongs

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Also Published As

Publication number Publication date
WO2002056429A1 (en) 2002-07-18
JP2004520689A (en) 2004-07-08
US20040107760A1 (en) 2004-06-10
CA2434884A1 (en) 2002-07-18
US7024911B2 (en) 2006-04-11
FR2819645A1 (en) 2002-07-19

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