EP0116245A1 - Universal tool for use as an auxiliary for clamping and/or loosening screwable elements and screwing tools - Google Patents

Universal tool for use as an auxiliary for clamping and/or loosening screwable elements and screwing tools Download PDF

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Publication number
EP0116245A1
EP0116245A1 EP83402458A EP83402458A EP0116245A1 EP 0116245 A1 EP0116245 A1 EP 0116245A1 EP 83402458 A EP83402458 A EP 83402458A EP 83402458 A EP83402458 A EP 83402458A EP 0116245 A1 EP0116245 A1 EP 0116245A1
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EP
European Patent Office
Prior art keywords
tool
handle
rotary head
head
axial
Prior art date
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Application number
EP83402458A
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German (de)
French (fr)
Inventor
Patricia Carossino
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/005—Handle constructions for screwdrivers, wrenches or spanners with additional levers, e.g. for increasing torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00—Screwdrivers
    • B25B15/001—Screwdrivers characterised by material or shape of the tool bit
    • B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
    • B25B15/008—Allen-type keys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers

Definitions

  • the present invention relates to a removable universal tool usable as an auxiliary allowing to exert an increased torque for the tightening / loosening of screwable members and / or for the drive of tightening tools, applicable in particular to threaded fasteners of the screw type. , bolts, etc., allen keys, pipe wrenches and screwdrivers.
  • clamping tools and / or clamping devices including numerous tools and mainly screwdrivers, pipe wrenches, pipe wrenches, Allen keys, etc ...
  • the invention aims to create a removable universal tool of the type indicated above for increasing the lever arm that can be exerted on a tubular key, such as an Allen key or a wrench. tubes, or even a screwdriver, and this with the possibility of total rotation through 360 °, either in the manner of a strict lever arm of the handle type, or in the manner of a crank, while eliminating the risk of injury to which the user was subjected when he simply held the key element in his hand.
  • the tool according to the in should make it possible to prevent any untimely fall of the key during the tightening or loosening of a screwable member.
  • the tool of the type indicated above consists of a gripping member formed of a hollow handle carrying (with the possibility of rotation, but with locking against any axial displacement), an extended head d 'A tubular body, equipped with means for locking, in axial and transverse position, the rod of a clamping tool, said rotary head being fixed to the handle by removable retaining means, not integral with the latter.
  • the locking means in the axial position of a tightening tool are constituted by an axial bore in particular with a hexagon socket, formed in the head and the tubular body of the tool.
  • the locking means in the axial position of a tightening tool are constituted by an axial cylindrical profile bore made in the head and the tubular body and by a transverse screw inserted in a corresponding radial tapping of the head. of the tool, perpendicular to the axis of the latter and to the axis of the locking means in transverse position of the rod of a tool.
  • the means for locking in transverse position of the shank of a tool are constituted by transverse (radial) hexagonal bores of the same section and aligned along a common axis.
  • the means for locking in transverse position of the rod of a tool are constituted by cylindrical transverse bores of the same section aligned along a common axis and by said transverse screw.
  • the tool essentially consists of a cylindrical handle 1, in the form of a sheath, its bore having an annular shoulder 1 1 defining a section 2 of smaller diameter than the rest of the 'bore, this projecting shoulder constituting a stop for the head of a screw whose role will be specified below.
  • the handle is associated with a head 3, of annular shape, extended on one of its faces by an end piece 4 which is received in the narrowed diameter of the handle, the head 3 and the end piece 4 being crossed by an axial bore 5 a part of which is tapped at 4 1 to receive a screw or limit stop 6 whose head is supported on the annular shoulder 1 1 of the bore of the handle 1.
  • This screw can be easily screwed into the end piece 4 by the open end of the handle until it comes to bear against the front face of the end piece 4.
  • This screw has the effect of making the rotary head 3 integral with the handle while allowing its rotation relative to the latter, by pivoting the head, end piece 4 and screw 6 assembly.
  • this screw also constitutes an axial end-of-travel stop for the tool which, when will be introduced axially into the bore 5, will come to bear by its front end on the end face 6 1 of the screw.
  • the rotary head also comprises two transverse or radial bores 7 having, in the example shown, a hexagonal shape, that is to say a contour of section complementary to the section of the tool which, in the mode illustrated, consists of an Allen key such as that visible in fig.2. These radial orifices 7 are perpendicular to the plane passing through the axis 8 of the handle and pass through the head 3 right through.
  • the rotary head also comprises another radial orifice 10 oriented in a plane perpendicular to the axis of the two radial orifices 7, this orifice being tapped to receive a clamping screw 9 having the function of retaining the tool in the rotary head 3 , that the latter is introduced axially or transversely into the orifice 5 or into the orifices 7.
  • the orifice 5 is in fact, like the transverse orifices, of hexagonal section to receive, still in the example considered, the complementary shaped end of the Allen key.
  • the clamping screw 9 has the effect of firmly applying the tool against the walls of the axial orifice 5 or of the radial orifices 7 to immobilize it so that it forms one body with the rotary head 3.
  • the hexagonal section of the Allen key is given as an example because, it is obvious that one could use any other type of tool, whatever its section, the main one being that the latter is other than cylindrical and that the shape of the axial orifice 5 or of the radial orifices 7 is complementary to this section. We could therefore consider giving these axial and radial orifices any other polygonal shape, or even cylindrical, on the condition of providing a flat opposing the rotation of the tool relative to the head 3 so that this either secured to the tool after tightening the screw 9.
  • tool 1 is used in the manner of a crank.
  • the Allen key which consists of a hexagonal rod bent at a right angle, is introduced by its shortest branch 11 into the radial orifices 7 of the rotary head 3, the longest branch 12 being located in a plane parallel to the axis 8 of the handle.
  • the clamping screw 9 is then introduced into the orifice 10 in order to firmly tighten the branch 11 in the rotary head so that the two elements form a body.
  • the tool can be used as a crank by inserting the end 12 1 of the key into the hexagon head of a screw, even if the latter is housed at the bottom of a cavity or in a place difficult to access.
  • the tool could also be used by inserting the large branch 12 of the key into the radial holes 7 and using the small branch 11 as a tightening member for a screw. In this case, the lever arm would be even greater and the tightening or loosening torque would be proportionally increased.
  • the universal tool as a handle making it possible to increase, under very sensitive conditions, the lever arm that constitutes the Allen key.
  • the rod 13 of the screwdriver is inserted beforehand, the handle of which is identified by the reference 15 inside the transverse bores 7 of the head 3 and the said head is blocked on the rod 13 of the screwdriver using the clamping screw 9.
  • the blade-shaped end 16 of the screwdriver shank is inserted into the slot of a screw to be tightened (or loosened) and the handle 1 is again used as a handle for exerting on the shank 13 of the screwdriver a torque greater than that which could be obtained by simply tightening by hand the handle 15 of said screwdriver.

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

Abstract

L'invention concerne un outil universel amovible utilisable comme auxiliaire pour le serrage et/ou le desserrage d'organes vissables et d'outils de serrage. Le problème posé consiste à accroître le couple exercé au moyen d'un outil de serrage/desserrage. Suivant l'invention, on utilise un dispositif qui se compose d'un organe de préhension (1), formé d'un manche évidé et d'une tête indépendante (3) rendue solidaire axialement du manche tout en pouvant librement tourner par rapport à celui-ci, ladite tête rotative comportant au moins un orifice axial (5) et au moins un orifice radial (7) pour recevoir l'extrémité d'un dispositif ou d'un organe de serrage, un moyen de blocage étant prévu pour rendre le dispositif ou l'organe de serrage, solidaire en rotation de la tête prolongeant le manche évidé (1). L'invention est applicable notamment aux clés à pipe, aux clés à tube et aux tournevis.The invention relates to a removable universal tool which can be used as an aid for tightening and / or loosening screwable members and tightening tools. The problem posed consists in increasing the torque exerted by means of a tightening / loosening tool. According to the invention, a device is used which consists of a gripping member (1), formed by a hollowed handle and an independent head (3) made axially integral with the handle while being able to freely rotate relative to the latter, said rotary head comprising at least one axial orifice (5) and at least one radial orifice (7) for receiving the end of a clamping device or member, a locking means being provided to make the device or the clamping member, integral in rotation with the head extending the hollowed handle (1). The invention is particularly applicable to pipe wrenches, pipe wrenches and screwdrivers.

Description

La présente invention concerne un outil universel amovible utilisable comme auxiliaire permettant d'exercer un couple accru pour le serrage/desserrage d'organes vissables et/ou pour l'entraînement d'outils de serrage, applicable notamment aux organes de fixation filetés du type vis, boulons, etc,.. aux clés Allen, aux clés à tube et aux tournevis.The present invention relates to a removable universal tool usable as an auxiliary allowing to exert an increased torque for the tightening / loosening of screwable members and / or for the drive of tightening tools, applicable in particular to threaded fasteners of the screw type. , bolts, etc., allen keys, pipe wrenches and screwdrivers.

Tant dans le domaine général de la mécanique appliquée,tant aux fabrications et constructions mécaniques de toutes natures qu'à l'industrie automobile, aéronautique, etc,.. et d'une manière plus générale, dans tous les domaines où l'on réalise la fixation réciproque d'éléments de toutes sortes par des organes vissables,tels que des vis, des boulons, etc,.., il est connu d'utiliser en général des outils de serrage et/ou des dispositifs de serrage incluant de nombreux outils et principalement des tournevis, des clés à tubes, des clés à pipes, des clés Allen,etc...Both in the general field of applied mechanics, both in manufacturing and mechanical constructions of all kinds as in the automotive industry, aeronautics, etc., and more generally, in all areas where we realize the reciprocal fixing of elements of all kinds by screwable members, such as screws, bolts, etc., it is known in general to use clamping tools and / or clamping devices including numerous tools and mainly screwdrivers, pipe wrenches, pipe wrenches, Allen keys, etc ...

Toutefois, ces différents types de clés présentent des inconvénients classiques importants. En effet, dans le cas d'éléments fixés par des vis, boulons, etc.., en des endroits qui sont difficilement accessibles, il s'avère nécessaire d'utiliser naturellement des clés à pipes, des clés à tubes, ou même parfois soit de tout petits tournevis, soit des tournevis au contraire à manche très long, mais dans tous les cas, il s'avère souvent délicat et pénible de réaliser le serrage - ou le desserrage - des organes vissables par suite de l'absence d'un bras de levier suffisamment important pour pouvoir serrer à fond ou tout au moins d'une manière suffisante lesdits organes, ou les desserrer.However, these different types of keys have significant conventional drawbacks. Indeed, in the case of elements fixed by screws, bolts, etc. in places which are difficult to access, it turns out to be necessary to use pipe wrenches, pipe wrenches, or even sometimes either very small screwdrivers, or screwdrivers on the contrary with very long handles, but in all cases, it often proves difficult and painful to tighten - or loosen - the screwable members due to the absence of a lever arm large enough to be able to tighten fully or at least sufficiently enough said members, or loosen them.

En effet, dans le cas par exemple de l'utilisation d'une clé à tube ou d'ureclé Allenà sixpans réalisée sous la forme d'une tige coudée à angle droit, dont une branche est courte et l'autre nettement plus longue, on introduit la clé sur ou dans une tête de vis par la plus petite branche, si cela est possible, de manière à pouvoir exercer déjà un bras de levier plus important par la branche la plus grande, et ce à la main. Déjà dans ce cas, l'entraînement en rotation pour le serrage ou le desserrage peut être difficile et le maniement rude pour les mains.Indeed, in the case for example of the use of a tube wrench or Allen key with six pins produced in the form of a rod bent at right angles, of which one branch is short and the other clearly longer, we introduce the key on or in a screw head by the smallest branch, if that is possible, so that you can already exert a larger lever arm by the larger branch, by hand. Already in this case, the rotation drive for tightening or loosening can be difficult and rough handling for the hands.

Afin d'avoir une action accrue de bras de levier, il est naturellement possible d'utiliser une pince ou autre, ce qui, outre le fait de ne pas être rationnel, peut créer des couples de torsion nuisibles, et l'on peut également se blesser, dans le cas où la pince en outre glisse sur ladite clé.In order to have increased leverage, it is naturally possible to use pliers or the like, which, in addition to not being rational, can create harmful torques, and it is also possible injuring yourself, in the event that the pliers further slide on said key.

Toutefois, dans le cas où l'accessibilité est encore plus réduite et où il faut disposer la clé Allen par sa branche la plus longue et sur ou dans l'organe vissable, on ne dispose alors que de la plus petite branche pour exercer un bras de levier de serrage ou de desserrage, ce qui accroît encore les inconvénients mentionnés ci-dessus.However, in the case where accessibility is even more reduced and where the Allen key must be arranged by its longest branch and on or in the screwable member, we then only have the smallest branch to exercise an arm. clamping or loosening lever, which further increases the drawbacks mentioned above.

Par ailleurs, dans le cas d'un ouvrier travaillant au-dessous d'une voiture ou bien au-dessous d'éléments de charpente de construction de toute nature, il peut non seulement se poser les mêmes problèmes que ceux mentionnés ci-dessus mais également un autre inconvénient tenant au fait que, une fois la clé appliquée sur ou dans l'organe vissable, il faut la maintenir pour qu'elle ne tombe pas, et ce tout en effectuant la rotation de serrage ou de desserrage.In addition, in the case of a worker working under a car or well below structural elements of construction of any kind, he can not only pose the same problems as those mentioned above but also another disadvantage due to the fact that, once the key applied to or in the screwable member, it must be maintained so that it does not fall, and this while performing the tightening or loosening rotation.

Il est évident qu'en plus de la nature intrinsèque des inconvénients précités, il s'y ajoute souvent une perte de temps et bien entendu un manque d'efficacité.It is obvious that in addition to the intrinsic nature of the abovementioned drawbacks, there is often added a waste of time and of course a lack of efficiency.

C'est pourquoi l'invention a pour but de créer un outil universel amovible du type indiqué plus haut permettant d'accroître le bras de levier que l'on peut exercer sur une clé tubulaire, telle qu'une clé Allen ou une clé à tubes, ou même un tournevis, et ce avec une possibilité de rotation totale sur 360°, soit à la manière d'un strict bras de levier du type poignée, soit à la manière d'une manivelle, tout en éliminant le risque de blessure auquel était soumis l'utilisateur lorqu'il tenait simplement l'élément de clé à la main. L'outil selon l'invention devant en outre permettre d'empêcher, d'une manière commode, toute chute intempestive de la clé lors du serrage ou du desserrage d'un organe vissable.This is why the invention aims to create a removable universal tool of the type indicated above for increasing the lever arm that can be exerted on a tubular key, such as an Allen key or a wrench. tubes, or even a screwdriver, and this with the possibility of total rotation through 360 °, either in the manner of a strict lever arm of the handle type, or in the manner of a crank, while eliminating the risk of injury to which the user was subjected when he simply held the key element in his hand. The tool according to the in Furthermore, this should make it possible to prevent any untimely fall of the key during the tightening or loosening of a screwable member.

Ce problème est résolu grâce au fait que l'outil du type indiqué plus haut se compose d'un organe de préhension formé d'un manche évidé portant(avec possibilité de rotation, mais avec blocage contre tout déplacement axial),une tête prolongée d'un corps tubulaire, équipée de moyens pour bloquer, en position axiale et transversale, la tige d'un outil de serrage, ladite tête rotative étant fixée au manche par des moyens de retenue amovibles, non solidaires de ce dernier.This problem is solved by the fact that the tool of the type indicated above consists of a gripping member formed of a hollow handle carrying (with the possibility of rotation, but with locking against any axial displacement), an extended head d 'A tubular body, equipped with means for locking, in axial and transverse position, the rod of a clamping tool, said rotary head being fixed to the handle by removable retaining means, not integral with the latter.

Selon une première variante de réalisation, les moyens de blocage en position axiale d'un outil de serrage sont constitués par un perçage axial notamment à six pans creux, ménagés dans la tête et le corps tubulaire de l'outil.According to a first alternative embodiment, the locking means in the axial position of a tightening tool are constituted by an axial bore in particular with a hexagon socket, formed in the head and the tubular body of the tool.

Selon une autre variante de réalisation, les moyens de blocage en position axiale d'un outil de serrage sont constitués par un perçage axial profilé cylindrique ménagé dans la tête et le corps tubulaire et par une vis transversale insérée dans un taraudage radial correspondant de la tête de l'outil, perpendiculairement à l'axe de ce dernier et à l'axe des moyens de blocage en position transversale de la tige d'un outil.According to another alternative embodiment, the locking means in the axial position of a tightening tool are constituted by an axial cylindrical profile bore made in the head and the tubular body and by a transverse screw inserted in a corresponding radial tapping of the head. of the tool, perpendicular to the axis of the latter and to the axis of the locking means in transverse position of the rod of a tool.

En outre, selon l'invention, les moyens de blocage en position transversale de la tige d'un outil sont constitués par des perçages transversaux (radiaux) hexagonaux de même section et alignés suivant un axe commun.In addition, according to the invention, the means for locking in transverse position of the shank of a tool are constituted by transverse (radial) hexagonal bores of the same section and aligned along a common axis.

Selon une variante, les moyens de blocage en position transversale de la tige d'un outil sont constitués par des perçages transversaux cylindriques de même section alignés suivant un axe commun et par ladite vis transversale.According to a variant, the means for locking in transverse position of the rod of a tool are constituted by cylindrical transverse bores of the same section aligned along a common axis and by said transverse screw.

Il ressort à l'évidence de ces caractéristiques un bon nombre d'avantages, liés au fait qu'on peut fixer cet outil universel auxiliaire sur l'une des extrémités d'une clé Allen, d'une clé à pipe ou d'une clé à tube, et accroître le couple de serrage ou de desserrage par suite de la présence d'un bras de levier supérieur formé par le manche et la tête de l'outil, que l'on peut utiliser soit en tant que bras de levier strict à la manière d'une poignée de porte, soit à la manière d'une manivelle permettant d'entraîner aisément en rotation ladite clé, (le manche de l'outil tournant librement sur la tête de ce dernier) et ce, sans aucune chute possible de la clé.It is obvious from these characteristics a good number of advantages, related to the fact that one can fix this auxiliary universal tool on one of the ends of an Allen key, a pipe wrench or a pipe wrench, and increase the tightening or loosening torque due to the presence of a upper lever arm formed by the handle and the head of the tool, which can be used either as a strict lever arm in the manner of a door handle, or in the manner of a crank allowing 'Easily drive said key in rotation (the handle of the tool freely rotating on the latter's head) without any possible fall of the key.

D'autres caractéristiques et avantages de l'invention ressortiront de la description donnée ci-après, prise en référence aux dessins annexés, sur lesquels :

  • - la fig.1 représente, en coupe transversale axiale, l'outil universel selon l'invention ;
  • - la fig.2 est une vue en perspective schématique de l'outil illustré en fig.1, dans sa position d'utilisation dite "en manivelle" ;
  • - la fig.3 est une vue en élévation latérale de l'outil utilisé comme bras de levier "type poignée" ;
  • - la fig.4 est une vue schématique montrant une autre utilisation avantageuse de l'outil auxiliaire, permettant d'améliorer le serrage que l'on peut réaliser avec un tournevis.
Other characteristics and advantages of the invention will emerge from the description given below, taken with reference to the appended drawings, in which:
  • - Fig.1 shows, in axial cross section, the universal tool according to the invention;
  • - Fig.2 is a schematic perspective view of the tool illustrated in Fig.1, in its use position called "crank";
  • - Fig.3 is a side elevational view of the tool used as a "handle type" lever arm;
  • - Fig.4 is a schematic view showing another advantageous use of the auxiliary tool, to improve the tightening that can be achieved with a screwdriver.

Comme illustré en fig.1, l'outil est constitué essentiellement d'un manche cylindrique 1, se présentant sous la forme d'un fourreau, son alésage comportant un épaulement annulaire 11 définissant une section 2 de diamètre moindre que le reste de l'alésage, cet épaulement en saillie constituant une butée pour la tête d'une vis dont le rôle sera précisé ci-après. Le manche est associé à une tête 3, de forme annulaire, prolongée sur l'une de ses faces par un embout 4 venant se loger dans le diamètre rétréci du manche, la tête 3 et l'embout 4 étant traversés par un perçage axial 5 dont une partie est taraudée en 41 pour recevoir une vis ou butée de fin de course 6 dont la tête est en appui sur l'épaulement annulaire 11 de l'alésage du manche 1. Cette vis peut être aisément vissée dans l'embout 4 par l'extrémité ouverte du manche jusqu'à ce qu'elle vienne en appui contre la face frontale de l'embout 4. Cette vis a pour effet de rendre la tête rotative 3 solidaire du manche tout en autorisant sa rotation, par rapport à ce dernier, par un pivotement de l'ensemble tête, embout 4 et vis 6. En outre, cette vis constitue également une butée de fin de course axiale pour l'outil qui, lorsqu'il sera introduit axialement dans le perçage 5, viendra en appui par son extrémité frontale sur la face d'extrémité 61 de la vis.As illustrated in fig.1, the tool essentially consists of a cylindrical handle 1, in the form of a sheath, its bore having an annular shoulder 1 1 defining a section 2 of smaller diameter than the rest of the 'bore, this projecting shoulder constituting a stop for the head of a screw whose role will be specified below. The handle is associated with a head 3, of annular shape, extended on one of its faces by an end piece 4 which is received in the narrowed diameter of the handle, the head 3 and the end piece 4 being crossed by an axial bore 5 a part of which is tapped at 4 1 to receive a screw or limit stop 6 whose head is supported on the annular shoulder 1 1 of the bore of the handle 1. This screw can be easily screwed into the end piece 4 by the open end of the handle until it comes to bear against the front face of the end piece 4. This screw has the effect of making the rotary head 3 integral with the handle while allowing its rotation relative to the latter, by pivoting the head, end piece 4 and screw 6 assembly. In addition, this screw also constitutes an axial end-of-travel stop for the tool which, when will be introduced axially into the bore 5, will come to bear by its front end on the end face 6 1 of the screw.

La tête rotative comporte, par ailleurs, deux perçages transversaux ou radiaux 7 ayant, dans l'exemple représenté, une forme hexagonale, c'est-à-dire un contour de section complémentaire de la section de l'outil qui, dans le mode de réalisation illustré, est constitué d'une clé Allen telle que celle visible en fig.2. Ces orifices radiaux 7 sont perpendiculaires au plan passant par l'axe 8 du manche et traversent la tête 3 de part en part. La tête rotative comporte par ailleurs un autre orifice radial 10 orienté dans un plan perpendiculaire à l'axe des deux orifices radiaux 7, cet orifice étant taraudé pour recevoir une vis de serrage 9 ayant pour fonction de retenir l'outil dans la tête rotative 3, que celui-ci est introduit axialement ou transversalement dans l'orifice 5 ou dans les orifices 7. L'orifice 5 est en effet, à l'instar des orifices transversaux, de section hexagonale pour recevoir, toujours dans l'exemple considéré, l'extrémité de forme complémentaire de la clé Allen. La vis de serrage 9 a pour effet d'appliquer fermement l'outil contre les parois de l'orifice axial 5 ou des orifices radiaux 7 pour l'immobiliser afin qu'il fasse corps avec la tête rotative 3.The rotary head also comprises two transverse or radial bores 7 having, in the example shown, a hexagonal shape, that is to say a contour of section complementary to the section of the tool which, in the mode illustrated, consists of an Allen key such as that visible in fig.2. These radial orifices 7 are perpendicular to the plane passing through the axis 8 of the handle and pass through the head 3 right through. The rotary head also comprises another radial orifice 10 oriented in a plane perpendicular to the axis of the two radial orifices 7, this orifice being tapped to receive a clamping screw 9 having the function of retaining the tool in the rotary head 3 , that the latter is introduced axially or transversely into the orifice 5 or into the orifices 7. The orifice 5 is in fact, like the transverse orifices, of hexagonal section to receive, still in the example considered, the complementary shaped end of the Allen key. The clamping screw 9 has the effect of firmly applying the tool against the walls of the axial orifice 5 or of the radial orifices 7 to immobilize it so that it forms one body with the rotary head 3.

La section hexagonale de la clé Allen, visible notamment en fig.2, est donnée à titre d'exemple car, il est bien évident que l'on pourrait utiliser tout autre type d'outil, quelle que soit sa section, le principal étant que cette dernière soit autre que cylindrique et que la forme de l'orifice axial 5 ou des orifices radiaux 7 soit complémentaire de cette section. On pourrait par conséquent envisager de donner à ces orifices axiaux et radiaux toute autre forme polygonale, voire même cylindrique, à la condition de prévoir un méplat s'opposant à la rotation de l'outil par rapport à la tête 3 de manière à ce que celle-ci soit rendue solidaire de l'outil après serrage de la vis 9.The hexagonal section of the Allen key, visible in particular in fig. 2, is given as an example because, it is obvious that one could use any other type of tool, whatever its section, the main one being that the latter is other than cylindrical and that the shape of the axial orifice 5 or of the radial orifices 7 is complementary to this section. We could therefore consider giving these axial and radial orifices any other polygonal shape, or even cylindrical, on the condition of providing a flat opposing the rotation of the tool relative to the head 3 so that this either secured to the tool after tightening the screw 9.

Dans l'exemple de la fig.2, l'outil 1 est utilisé à la manière d'une manivelle. Dans ce cas, la clé Allen, qui est constituée d'une tige hexagonale pliée à angle droit, est introduite par sa branche la plus courte 11 dans les orifices radiaux 7 de la tête rotative 3, la branche la plus longue 12 se situant dans un plan parallèle à l'axe 8 du manche. La vis de serrage 9 est alors introduite dans l'orifice 10 pour venir serrer fermement la branche 11 dans la tête rotative afin que les deux éléments fassent corps. Dans cette position, l'outil peut être utilisé comme une manivelle en introduisant l'extrémité 121 de la clé dans la tête à six pans creux d'une vis, même si celle-ci est logée au fond d'une cavité ou en un lieu difficilement accessible. Il suffit en effet de tenir le manche 1 dans la main puis d'assurer une rotation selon la flèche 14 pour que la tête rotative 3 tourne de 360° par rapport au manche, engendrant ainsi un tour complet de la vis à tête à six pans creux. L'utilisation de l'outil à titre de manivelle est particulièrement avantageuse, car le fait que l'axe du manche soit décalé de l'axe de la branche 12 de la clé confère à l'ensemble un couple de serrage relativement important, ce qui permet de visser ou de dévisser des orga-nes de serrage sans effort et sans blessure.In the example in fig. 2, tool 1 is used in the manner of a crank. In this case, the Allen key, which consists of a hexagonal rod bent at a right angle, is introduced by its shortest branch 11 into the radial orifices 7 of the rotary head 3, the longest branch 12 being located in a plane parallel to the axis 8 of the handle. The clamping screw 9 is then introduced into the orifice 10 in order to firmly tighten the branch 11 in the rotary head so that the two elements form a body. In this position, the tool can be used as a crank by inserting the end 12 1 of the key into the hexagon head of a screw, even if the latter is housed at the bottom of a cavity or in a place difficult to access. It suffices in fact to hold the handle 1 in the hand and then to ensure a rotation along the arrow 14 so that the rotary head 3 rotates 360 ° relative to the handle, thus generating a complete revolution of the hexagon head screw hollow. The use of the tool as a crank is particularly advantageous, because the fact that the axis of the handle is offset from the axis of the branch 12 of the key gives the assembly a relatively large tightening torque, this which allows to screw or unscrew or g a-nes of clamping effortlessly and without injury.

Il est bien évident que l'on pourrait également utiliser l'outil en introduisant dans les orifices radiaux 7 la grande branche 12 de la clé et en utilisant la petite branche 11 comme organe de serrage d'une vis. Dans ce cas, le bras de levier serait encore plus grand et le couple de serrage ou de desserrage serait proportionnellement augmenté.It is obvious that the tool could also be used by inserting the large branch 12 of the key into the radial holes 7 and using the small branch 11 as a tightening member for a screw. In this case, the lever arm would be even greater and the tightening or loosening torque would be proportionally increased.

Selon une variante de réalisation, telle qu'illustrée en fig.3, on peut également utiliser l'outil universel comme poignée permettant d'accroître, dans des conditions très sensibles, le bras de levier que constitue la clé Allen. Dans ce cas, il suffit d'introduire l'une quelconque des deux branches 11 ou 12 de la clé dans l'orifice axial 5 de la tête rotative, puis de visser la vis de blocage 9 pour obtenir une sorte de poignée ou bec de canne permettant des couples de serrage im- portants, en particulier lorsque c'est la branche la plus longue 12 qui est introduite dans le perçage hexagonal 5 de la tête rotative 3. On peut là encore, en jouant sur la longueur de la branche introduite dans l'orifice axial de la tête rotative 3, adapter le couple de serrage et surtout avoir accès à des vis logées dans des cavités réputées relativement inaccessibles tout en bénéficiant d'une grande force de serrage ou de desserrage. Dans l'exemple illustré en fig.3, c'est la branche la plus longue 12 qui a été introduite dans la tête rotative 3 en prenant comme hypothèse le fait que la vis dans laquelle sera introduite la branche la plus courte 11 est facilement accessible. On constate que, dans cette hypothèse, le bras de levier a été multiplié sensiblement par deux (longueur du manche 1 + longueur de la branche 12 de la clé).According to an alternative embodiment, as illustrated in FIG. 3, it is also possible to use the universal tool as a handle making it possible to increase, under very sensitive conditions, the lever arm that constitutes the Allen key. In this case, it suffices to introduce any one of the two branches 11 or 12 of the key into the axial orifice 5 of the rotary head, then to screw the locking screw 9 to obtain a sort handle or cane spout allowing tightening torques i m - load-bearing, in particular when it is the longest branch 1 2 which is introduced into the hexagonal bore 5 of the rotary head 3. It is again possible, by playing along the length of the branch introduced into the axial orifice of the rotary head 3, adapt the tightening torque and above all have access to screws housed in cavities known to be relatively inaccessible while benefiting from a large clamping or loosening force . In the example illustrated in fig. 3, it is the longest branch 12 which has been introduced into the rotary head 3, assuming that the screw into which the shortest branch 11 will be introduced is easily accessible . It can be seen that, in this hypothesis, the lever arm has been multiplied substantially by two (length of the handle 1 + length of the branch 12 of the key).

Selon la variante de réalisation illustrée en figure 4, on peut également, grâce à l'action de l'outil universel selon l'invention, accroître de façon sensible l'action de serrage exercée par un tournevis.According to the alternative embodiment illustrated in FIG. 4, it is also possible, thanks to the action of the universal tool according to the invention, to appreciably increase the clamping action exerted by a screwdriver.

A cet effet, on insère préalablement la tige 13 du tournevis dont la poignée est repérée par la référence 15 à l'intérieur des perçages transversaux 7 de la tête 3 et on bloque ladite tête sur la tige 13 du tournevis en utilisant la vis de serrage 9. Ensuite, on introduit l'extrémité 16 en forme de lame de la tige du tournevis dans la fente d'une vis à serrer (ou à desserrer) et on utilise à nouveau le manche 1 comme poignée pour exercer sur la tige 13 du tournevis un couple supérieur à celui que l'on pourrait obtenir en serrant simplement à la main le manche 15 dudit tournevis.To this end, the rod 13 of the screwdriver is inserted beforehand, the handle of which is identified by the reference 15 inside the transverse bores 7 of the head 3 and the said head is blocked on the rod 13 of the screwdriver using the clamping screw 9. Next, the blade-shaped end 16 of the screwdriver shank is inserted into the slot of a screw to be tightened (or loosened) and the handle 1 is again used as a handle for exerting on the shank 13 of the screwdriver a torque greater than that which could be obtained by simply tightening by hand the handle 15 of said screwdriver.

Il ressort à l'évidence que dans le cas de tiges de clés à six pans ou d'un tournevis dont la tige est de section transversale polygonale, la tige de la clé ou du tournevis est déjà bloquée contre toute rotation par rapport à la tête 3 de l'outil et que le serrage de la vis 9 n'est nécessaire que pour s'opposer à tout déplacement longitudinal de la tête 3 sur la tige 13 de l'outil considéré.It is obvious that in the case of hexagonal key stems or a screwdriver whose rod is of polygonal cross section, the key or screwdriver rod is already locked against any rotation relative to the head 3 of the tool and that the tightening of the screw 9 is only necessary to oppose any longitudinal movement of the head 3 on the rod 13 of the tool considered.

Bien entendu, il est possible de prévoir sur l'extrémité frontale de la vis de serrage 9 des crans ou tout autre moyen de préhension permettant d'accroître l'action de blocage de la vis sur la tige de la clé ou autre outil sans rien changer au principe de l'invention.Of course, it is possible to provide notches or any other gripping means on the front end of the tightening screw 9 which make it possible to increase the locking action of the screw on the rod of the key or other tool without anything change to the principle of the invention.

Claims (8)

1°) Outil universel amovible utilisable comme auxiliaire permettant d'exercer un couple accru pour le serrage/ desserrage d'organes vissables et/ou pour l'entraînement d'outils de serrage, applicable notamment aux organes de fixation filetés, du type vis, boulons, etc ... aux clés Allen, aux clés à tube et à pipe et aux tournevis, caractérisé en ce qu'il se compose d'un organe de préhension (1), formé d'un manche évidé et d'une tête indépendante (3) rendue solidaire axialement du manche tout en pouvant librement tourner par rapport à celui-ci, ladite tête rotative comportant au moins un orifice axial (5) et un orifice radial (7) pour recevoir l'extrémité d'un outil ou d'un organe de serrage, un moyen de blocage étant prévu pour rendre l'outil ou l'organe de serrage solidaire en rotation de la tête prolongeant le manche évidé (1).1) Removable universal tool usable as an auxiliary allowing to exert an increased torque for the tightening / loosening of screwable members and / or for the drive of tightening tools, applicable in particular to threaded fasteners, of the screw type, bolts, etc ... to Allen keys, pipe and pipe wrenches and screwdrivers, characterized in that it consists of a gripping member (1), formed by a hollowed handle and a head independent (3) made axially integral with the handle while being able to freely rotate relative to the latter, said rotary head comprising at least one axial orifice (5) and a radial orifice (7) for receiving the end of a tool or a clamping member, a locking means being provided to make the tool or the clamping member integral in rotation with the head extending the hollowed handle (1). 2°) Outil selon la revendication 1, caractérisé en ce que la tête rotative (3) est de forme circulaire et comporte sur l'une de ses faces un embout (4) venant se loger dans une partie rétrécie (2) du manche, la tête rotative (3) ainsi que l'embout (4) étant traversés de part en part par un orifice axial (5) dont une partie est taraudée pour recevoir une vis de blocage (6) dont la tête vient en appui sur un épaulement intérieur (11) du manche (1).2 °) Tool according to claim 1, characterized in that the rotary head (3) is circular in shape and comprises on one of its faces a nozzle (4) which is received in a narrowed part (2) of the handle, the rotary head (3) as well as the end piece (4) being traversed right through by an axial orifice (5) of which a part is tapped to receive a locking screw (6) whose head comes to bear on a shoulder inside (1 1 ) of the handle (1). 3°) Outil selon l'une quelconque des revendications 1 et 2, caractérisé en ce que l'orifice axial (5) de la tête rotative et les orifices radiaux (7) sont d'une forme autre que cylindrique.3 °) Tool according to any one of claims 1 and 2, characterized in that the axial orifice (5) of the rotary head and the radial orifices (7) are of a shape other than cylindrical. 4°) Outil selon la revendication 3, caractérisé en ce que les orifices axial et radiaux (5,7) de la tête rotative (3) sont polygonaux, notamment hexagonaux.4 °) Tool according to claim 3, characterized in that the axial and radial orifices (5,7) of the rotary head (3) are polygonal, in particular hexagonal. 5°) Outil selon la revendication 1, caractérisé en ce que la tête rotative comporte un orifice transversal perpendiculaire aux orifices axial et radiaux (5,7), cet orifice transversal (10) recevant une vis de blocage (9) venant en appui sur l'extrémité de l'outil introduit dans l'un quelconque des orifices (5 ou 7).5 °) Tool according to claim 1, characterized in that the rotary head comprises a transverse orifice perpendicular to the axial and radial orifices (5,7), this transverse orifice (10) receiving a locking screw (9) bearing on the end of the tool inserted into any one of the holes (5 or 7). 6°) Outil selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les orifices axial (5) et radiaux (7) de la tête rotative (3) ont une forme complémentaire de la section transversale de la tige d'un outil tel que clé ou tournevis.6 °) Tool according to any one of claims 1 to 5, characterized in that the axial (5) and radial (7) orifices of the rotary head (3) have a shape complementary to the cross section of the rod. a tool such as a wrench or screwdriver. 7°) Outil selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la tête rotative (3) peut recevoir indifféremment, dans le plan axial ou dans le plan transversal, la branche la plus longue ou la branche la plus courte d'un outil tel qu'une clé Allen.7 °) Tool according to any one of claims 1 to 6, characterized in that the rotary head (3) can receive either in the axial plane or in the transverse plane, the longest branch or the shortest branch a tool such as an Allen wrench. 8°) Outil selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les orifices radiaux (7), qui traversent de part en part la tête rotative (3), reçoivent la tige d'un tournevis, le manche (1) servant alors de bras de levier pour multiplier le couple de serrage ou de desserrage du tournevis.8 °) Tool according to any one of claims 1 to 7, characterized in that the radial orifices (7), which pass right through the rotary head (3), receive the rod of a screwdriver, the handle ( 1) then serving as a lever arm to multiply the tightening or loosening torque of the screwdriver.
EP83402458A 1983-01-05 1983-12-19 Universal tool for use as an auxiliary for clamping and/or loosening screwable elements and screwing tools Withdrawn EP0116245A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8300071 1983-01-05
FR8300071A FR2538740B1 (en) 1983-01-05 1983-01-05 UNIVERSAL TOOL THAT CAN BE USED AS AN AUXILIARY FOR TIGHTENING AND / OR UNLOCKING VETABLE ORGANS AND TIGHTENING TOOLS

Publications (1)

Publication Number Publication Date
EP0116245A1 true EP0116245A1 (en) 1984-08-22

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EP83402458A Withdrawn EP0116245A1 (en) 1983-01-05 1983-12-19 Universal tool for use as an auxiliary for clamping and/or loosening screwable elements and screwing tools

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US (1) US4566357A (en)
EP (1) EP0116245A1 (en)
JP (1) JPS59134667A (en)
FR (1) FR2538740B1 (en)

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Also Published As

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JPS59134667A (en) 1984-08-02
FR2538740A1 (en) 1984-07-06
FR2538740B1 (en) 1985-07-19
US4566357A (en) 1986-01-28

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