WO2006037911A1 - Device for fixing an anti-theft system, in particular for motor vehicle wheels - Google Patents

Device for fixing an anti-theft system, in particular for motor vehicle wheels Download PDF

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Publication number
WO2006037911A1
WO2006037911A1 PCT/FR2005/050763 FR2005050763W WO2006037911A1 WO 2006037911 A1 WO2006037911 A1 WO 2006037911A1 FR 2005050763 W FR2005050763 W FR 2005050763W WO 2006037911 A1 WO2006037911 A1 WO 2006037911A1
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WO
WIPO (PCT)
Prior art keywords
proximal
distal
key
torque
fixing device
Prior art date
Application number
PCT/FR2005/050763
Other languages
French (fr)
Inventor
Grégory CHOBEAU
Original Assignee
Societe Des Forges De Froncles S.A.
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 Societe Des Forges De Froncles S.A. filed Critical Societe Des Forges De Froncles S.A.
Publication of WO2006037911A1 publication Critical patent/WO2006037911A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
    • F16B41/005—Measures against unauthorised operation of bolts, nuts or pins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • F16B31/021—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load by means of a frangible part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0061—Specially shaped nuts or heads of bolts or screws for rotations by a tool with grooves, notches or splines on the external peripheral surface designed for tools engaging in radial direction

Definitions

  • the present invention relates to an antitheft fixing device, in particular for motor vehicle wheels, of the type comprising a threaded portion and a driving portion adapted to allow transmission to said threaded portion of a tightening or loosening torque at the by means of a key or the like, the coupling of the key or the like with said drive portion being achieved through concordant impressions whose characteristics of shape, dimensions and arrangement are able to constitute a code.
  • the wheel of a motor vehicle is fixed by means of screws whose head, which allows the transmission of the tightening or loosening torque, is of hexagonal shape.
  • Numerous screw devices or the like provided with coding means are known, such as those described in documents GB 2.006.371, FR 2.359.730 and FR 2.567.215. These devices comprise on the one hand a screw whose head has either peripheral and / or facial notches arranged angularly irregularly, and on the other hand a socket-type key provided with pins or fingers arranged according to the same arrangement and intended to to cooperate with said notches in order to achieve the coupling capable of allowing the transfer of torque.
  • the screw of this device has a head lined externally at a certain distance and coaxially with a flange or the like which delimits with said head an annular space provided adapted to closely accommodate the annular end portion of the key, and said head present on its periphery, in random angular locations to form the code, longitudinal notches parallel to the axis of said head, intended to cooperate with concordant impressions that includes said key.
  • Such a screw is practically inviolable, especially when it is placed in a deep well, but it can be faulted when there are no wells or shallow wells, because in this case it may be possible to rotate with a striking tool such as a chisel applied either on the flange or at the notches.
  • Nuts or screws are also known which make it possible to tighten to a given torque and to avoid unscrewing or malicious removal.
  • Such a nut has two parts, proximal threaded and smooth distal, separated by a zone of less resistance able to break when subjected to a torque beyond a certain value and which corresponds to the value of the desired tightening torque , the proximal portion consisting of a body provided with a recess for coupling with a specific tool, while the distal portion has a impression allowing a coupling with a current tool.
  • the nut is screwed onto the screw, the proximal portion of the head of the latter, so that the transmission of the screwing torque is achieved through the distal portion by means of a conventional tool, and at the beyond the maximum torque, so as to obtain the rupture of the zone of least resistance, and to require that the unscrewing can be achieved only through the maneuvering of the proximal portion by means of a specific tool.
  • JP 11 325021 Such a nut is described in JP 11 325021, while JP 09 257021 describes a screw whose head has the same characteristics.
  • the present invention therefore aims to provide an antitheft fixing device to overcome these various disadvantages, and which is particularly inviolable regardless of the depth of the well.
  • the anti-theft fastening device in particular for motor vehicle wheels, according to the invention, is of the type comprising a threaded portion and a driving portion adapted to allow transmission to said threaded portion of a tightening or loosening torque at the by means of a wrench or the like, the coupling of the wrench or the like with said driving part being carried out through an imprint included in said drive part and a complementary recess included in said wrench or the like, and whose structural and dimensional characteristics are capable of constituting a code, and it is essentially characterized in that said driving portion is divided, in the longitudinal direction, into at least two separate coaxial, distal and proximal parts, by a weakening groove so as to be connected by a reduced cross-sectional area capable of breaking when said distal portion is subjected to a torque greater than a threshold torque lower than that required to achieve the desired fixation, and in that the fragment of impression that includes said proximal portion is designed capable of increasing the attachment capacity so at least just sufficient to allow the application of the
  • the proximal portion and / or the distal portion has a generally frustoconical shape profile.
  • the imprint fragment of the proximal portion is angularly offset from that of the distal portion, while the complementary imprint of the key or the like is divided into two staggered portions. angularly of the same value, and separated in the longitudinal direction of a space corresponding to the thickness of the distal portion, so as to allow that intended to cooperate with the impression fragment of the proximal portion, after crossing the fragment impression of the distal portion, to be moved in the weakening groove, under the effect of the pivoting of the key or the like, to then be engaged in said cavity fragment of the proximal portion.
  • the imprints on the distal and proximal portions have different arrangements so as to constitute different codes, said distal and proximal portions being of different diameters appropriate.
  • the impressions are in the form of longitudinal grooves.
  • the longitudinal grooves are of cross section in the form of a portion of a circle.
  • the grooves are of a depth which varies in the longitudinal direction.
  • the device is made of ferrous material, while the key or the like, and in particular the bottom thereof, is provided with magnetic means capable of promoting coupling.
  • FIG. 1 shows a schematic top view of an antitheft fastening device according to the invention.
  • FIG. 2 represents a schematic view in partial longitudinal section of the same device.
  • Figure 3 shows a schematic bottom view of a key adapted to the operation of this device.
  • FIG. 4 shows a schematic top view of a particular embodiment of the same device.
  • FIG. 5 shows a schematic bottom view of a key adapted to this particular embodiment.
  • a fixing device 1 which comprises in a conventional manner, as can be seen in FIG. 2, a threaded portion 2 and a head 3 intended to allow the transmission of the torque
  • the driving torque is transmitted to the head 3 by means of a key 4, shown in FIG. 3, the coupling being made through matching impressions.
  • the impression consists of a set of notches 5 arranged substantially longitudinally and angularly distributed in an arrangement which creates a code
  • the key 4 has the general appearance of a sleeve 40, adaptable to a tool, having internally and peripherally substantially longitudinal ribs 41 of a shape matching that of the notches 5, and arranged angularly according to the same code.
  • the head 3 has, not limited to, a frustoconical shape, which is also found at the key 4, which facilitates the coupling, and complicate the seizure fraudulent head 3 by means of a clamping tool.
  • the head 3 is divided into two coaxial parts, a distal portion 6 and a proximal portion 7, connected by an intermediate zone 8 of lesser section and separated by a peripheral groove 80.
  • the notches 5 extend over the two parts 6 and 7, and are in the form of two segments, respectively 56 and 57, separated by the groove 80.
  • the intermediate zone 8 has, of manufacture, the particularity of constituting an embrittlement zone, capable of breaking under the application of a torque beyond a certain value, which is lower than that of the torque required for the fixation performed. by the device according to the invention.
  • the application to the single part 6 of the torque required to unscrewing has the effect of breaking the head 3 at the intermediate zone 8, leaving only the proximal portion 7 to transmit the unscrewing torque.
  • the notch segments 57 of the proximal portion 7 are designed so as not to allow the transmission of such a torque.
  • the notch segments 57 of the proximal portion 7 are designed so as to allow to increase sufficiently the transmission capacity of the required torque to the head 3.
  • the required torque can be transmitted efficiently and without breakage only if it is transmitted simultaneously to the distal 6 and proximal 7 parts.
  • the notches 5 and the ribs 41 corresponding must have forms with little grip, being for example, not limited to section in a portion of a circle.
  • the notches 5 may, whether the general shape of the head 3 is frustoconical or not, be of variable depth. It can thus be expected that the depth of the notches 5 decreases, from the distal portion 6 to the proximal portion 7, so that the attachment possibilities are minimum at the proximal portion.
  • the longitudinal notches 5 are not parallel to the axis of the device 1, but each inclined at an angle, other than that due to possible tronconicity of the head 3, oriented so as to cause shifting a typing tool.
  • the truncation of the head 3 has another advantage than those mentioned above, that of only allowing the coupling of the key 4 to the head 3, and therefore the transmission of the required torque, only when the key 4 is engaged completely. on the head 3, that is to say when it is coupled simultaneously to the notch segments 57 of the proximal portion 7.
  • the head 3 is also divided into a proximal portion 7 and a distal portion 6, by a peripheral groove
  • FIG. 5 shows the key 4 adapted to this head 3 and for the maneuvering.
  • This key 4 consists of a bushing 40 having internally and peripherally coupling means to the notch segments 56 and 57.
  • These coupling means consist of pieces divided into two series, a series of pins 46 intended to cooperate with the notch segments 56, and a series of pins 47 intended to cooperate with the notch segments 57, the series of pins 46 being of course offset angularly relative to the series of pins 47, the same offset angle as the notch segments 56 and 57.
  • the series of pins 46 is separated from the series of pins 47 by a space 42 of a width corresponding to the thickness of the distal portion 6, while the thickness of the pins 47 is less than the width of the groove 80.
  • the key 4 is approaching the head 3, the pins 47 engaged in the notch segments 56 to abut against the proximal portion 7, and then by axial rotation the pins 47 are brought opposite the segments of FIG. notch 57 passing through the groove 80, which also brings the pins 46 next to the slot segments 56, then extending the thrust is fully coupled to the key 4 to the head 3.
  • Such a device therefore has a more complex code than that of the first embodiment.
  • it may be provided to combine the arrangement of the notch segments 56 and 57 with the offset angle so that no notch segment 56 is in alignment with a notch segment 57, making then even more unlikely a possible unscrewing with a typing tool.
  • the head 3 is of frustoconical shape, but it could be cylindrical without presenting the risks of its unfortunate deterioration mentioned for the previous embodiment.
  • the torque can be transmitted to the distal portion 6 only through the pins 46, which can be engaged in the notch segments 56 only if the pins 47 cooperate with the notch segments 57.
  • the head 3 is divided into two parts proximal and distal, but it is obvious that it is possible to divide it into more than two parts, thus achieving several embrittlement.
  • the distal 6 and proximal 7 parts have different codes, provided that the implantation diameters of the codes are appropriate, that is to say that the diameter of the distal portion 6 is less than that of the proximal portion 7, and so as to allow the passage of the key 4.

Abstract

The invention concerns a device for fixing an anti-theft system, in particular for motor vehicle wheels, comprising a threaded portion (2) and a driving portion (3) adapted to transmit to the threaded portion (2) a tightening or loosening torque by means of a wrench, whereof the connection with the driving part (3) is provided via complementary indentations. The driving part (3) is divided, in the longitudinal direction, into at least two coaxial parts, distal (6) and proximal (7), separated by a weakening groove (80) so as to be connected through a zone (8) with reduced cross-section adapted to be broken when the distal part (6) is subjected to a torque higher than a threshold torque lower than that required to produce the desired attachment, and the indentation fragment (57) comprised by the proximal part (7) is designed so as to increase the catching capacity at least just enough to enable the required torque to be applied.

Description

DISPOSITIF DE FIXATION ANTIVOL, NOTAMMENT POUR ROUES DE VEHICULES AUTOMOBILES.ANTI-THEFT FIXING DEVICE, IN PARTICULAR FOR AUTOMOTIVE VEHICLE WHEELS.
La présente invention a pour objet un dispositif de fixation antivol, notamment pour roues de véhicules automobiles, du type comprenant une partie filetée et une partie d'entraînement apte à permettre la transmission à ladite partie filetée d'un couple de serrage ou de desserrage au moyen d'une clé ou analogue, l'accouplement de la clé ou analogue avec ladite partie d'entraînement étant réalisé au travers d'empreintes concordantes dont les caractéristiques de forme, de dimensions et de disposition sont aptes à constituer un code.The present invention relates to an antitheft fixing device, in particular for motor vehicle wheels, of the type comprising a threaded portion and a driving portion adapted to allow transmission to said threaded portion of a tightening or loosening torque at the by means of a key or the like, the coupling of the key or the like with said drive portion being achieved through concordant impressions whose characteristics of shape, dimensions and arrangement are able to constitute a code.
De manière classique, la roue d'un véhicule automobile est fixée au moyen de vis dont la tête, qui permet la transmission du couple de serrage ou de desserrage, est de forme hexagonale.Conventionally, the wheel of a motor vehicle is fixed by means of screws whose head, which allows the transmission of the tightening or loosening torque, is of hexagonal shape.
Afin d'éviter qu'un tiers puisse enlever frauduleusement les roues, il est actuellement proposé que, pour chacune des roues, au moins l'une des vis présente une tête qui nécessite une clef particulière pour pouvoir être manœuvrée.In order to prevent a third party from fraudulently removing the wheels, it is currently proposed that for each of the wheels, at least one of the screws has a head which requires a special key to be able to be maneuvered.
On connaît de nombreux dispositifs de vis ou analogue munis de moyens de codage, comme par exemple ceux décrits dans les documents GB 2.006.371, FR 2.359.730 et FR 2.567.215. Ces dispositifs comprennent d'une part une vis dont la tête présente soit des encoches périphériques et/ou faciales arrangées angulairement de manière irrégulière, et d'autre part une clef de type douille, munie de pions ou doigts disposés selon le même arrangement et destinés à coopérer avec lesdites encoches en vue de réaliser l'accouplement susceptible de permettre le transfert de couple.Numerous screw devices or the like provided with coding means are known, such as those described in documents GB 2.006.371, FR 2.359.730 and FR 2.567.215. These devices comprise on the one hand a screw whose head has either peripheral and / or facial notches arranged angularly irregularly, and on the other hand a socket-type key provided with pins or fingers arranged according to the same arrangement and intended to to cooperate with said notches in order to achieve the coupling capable of allowing the transfer of torque.
Ces dispositifs présentent des inconvénients, notamment en ce qu'ils sont inefficaces face à des outils fabriqués spécialement à cet effet et ne comportant qu'un seul pion ou doigt, ou à des outils aptes à les saisir puissamment tels que des pinces.These devices have disadvantages, in particular in that they are ineffective in the face of specially manufactured tools for this purpose and having only one piece or finger, or tools able to seize powerfully such as clamps.
Il a été proposé des dispositifs permettant de pallier cet inconvénient, et notamment le dispositif décrit dans le document WO 03/081057 au nom de la demanderesse. La vis de ce dispositif présente une tête bordée extérieurement à une certaine distance et coaxialement d'une collerette ou analogue qui délimite avec ladite tête un espace annulaire prévu apte à loger étroitement la partie extrême de forme annulaire de la clé, et ladite tête présente sur son pourtour, en des emplacements angulaires aléatoires pour former le code, des encoches longitudinales parallèles à l'axe de ladite tête, destinées à coopérer avec des empreintes concordantes que comporte ladite clé.It has been proposed devices to overcome this drawback, and in particular the device described in WO 03/081057 in the name of the applicant. The screw of this device has a head lined externally at a certain distance and coaxially with a flange or the like which delimits with said head an annular space provided adapted to closely accommodate the annular end portion of the key, and said head present on its periphery, in random angular locations to form the code, longitudinal notches parallel to the axis of said head, intended to cooperate with concordant impressions that includes said key.
Du fait de la forme des encoches et de leur emplacement en périphérie de la tête, il n'est pas possible d'utiliser un outil à un seul pion ou doigt, tandis que la collerette empêche l'utilisation d'une pince.Because of the shape of the notches and their location on the periphery of the head, it is not possible to use a tool with a single pin or finger, while the collar prevents the use of a clamp.
Une telle vis est pratiquement inviolable surtout lorsqu'elle est disposée dans un puits profond, elle peut par contre être prise en défaut lorsqu'il y pas de puits ou un puits de faible profondeur, car dans ce cas il peut être possible de l'entraîner en rotation avec un outil de frappe tel qu'un burin appliqué soit sur la collerette, soit au niveau des encoches.Such a screw is practically inviolable, especially when it is placed in a deep well, but it can be faulted when there are no wells or shallow wells, because in this case it may be possible to rotate with a striking tool such as a chisel applied either on the flange or at the notches.
On connaît également des écrous ou vis permettant de serrer à un couple donné et d'éviter un dévissage ou un enlèvement malveillant. Un tel écrou comporte deux parties, proximale taraudée et distaie lisse, séparées par une zone de moindre résistance apte à casser lorsqu'elle est soumise à un couple au- delà d'une certaine valeur et qui correspond à la valeur du couple de serrage désirée, la partie proximale consistant en un corps pourvu d'une empreinte permettant l'accouplement avec un outil spécifique, tandis que la partie distale présente une empreinte permettant un accouplement avec un outil courant. En pratique, l'écrou est vissé sur la vis, partie proximale du côté de la tête de cette dernière, en sorte que la transmission du couple de vissage soit réalisée au travers de la partie distale au moyen d'un outil classique, et au-delà du couple maxi, en sorte d'obtenir la rupture de la zone de moindre résistance, et d'obliger que le dévissage ne puisse être réalisé qu'au travers du manœuvrement de la partie proximale au moyen d'un outil spécifique.Nuts or screws are also known which make it possible to tighten to a given torque and to avoid unscrewing or malicious removal. Such a nut has two parts, proximal threaded and smooth distal, separated by a zone of less resistance able to break when subjected to a torque beyond a certain value and which corresponds to the value of the desired tightening torque , the proximal portion consisting of a body provided with a recess for coupling with a specific tool, while the distal portion has a impression allowing a coupling with a current tool. In practice, the nut is screwed onto the screw, the proximal portion of the head of the latter, so that the transmission of the screwing torque is achieved through the distal portion by means of a conventional tool, and at the beyond the maximum torque, so as to obtain the rupture of the zone of least resistance, and to require that the unscrewing can be achieved only through the maneuvering of the proximal portion by means of a specific tool.
Un tel écrou est décrit dans le document JP 11 325021, tandis que le document JP 09 257021 décrit une vis dont la tête présente les mêmes caractéristiques.Such a nut is described in JP 11 325021, while JP 09 257021 describes a screw whose head has the same characteristics.
De tels dispositifs présentent l'inconvénient d'être à usage unique, puisque la rupture fait partie du processus de mise en œuvre.Such devices have the disadvantage of being disposable, since the break is part of the implementation process.
La présente invention a donc pour but de proposer un dispositif de fixation antivol permettant de remédier à ces divers inconvénients, et qui notamment est inviolable quelle que soit la profondeur du puits.The present invention therefore aims to provide an antitheft fixing device to overcome these various disadvantages, and which is particularly inviolable regardless of the depth of the well.
Le dispositif de fixation antivol, notamment pour roues de véhicules automobiles, selon l'invention, est du type comprenant une partie filetée et une partie d'entraînement apte à permettre la transmission à ladite partie filetée d'un couple de serrage ou de desserrage au moyen d'une clé ou analogue, l'accouplement de la clé ou analogue avec ladite partie d'entraînement étant réalisé au travers d'une empreinte que comporte ladite partie d'entraînement et d'une empreinte complémentaire que comporte ladite clé ou analogue, et dont les caractéristiques structurelles et dimensionnelles sont aptes à constituer un code, et il se caractérise essentiellement en ce que ladite partie d'entraînement est divisée, dans le sens longitudinal, en au moins deux parties coaxiales, distale et proximale, séparées par une gorge de fragilisation en sorte d'être reliées par une zone de section transversale réduite apte à rompre lorsque ladite partie distale est soumise à un couple supérieur à un couple seuil inférieur à celui requis pour réaliser la fixation désirée, et en ce que le fragment d'empreinte que comporte ladite partie proximale est conçu apte à augmenter la capacité d'accrochage de manière au moins juste suffisante à permettre l'application du couple requis.The anti-theft fastening device, in particular for motor vehicle wheels, according to the invention, is of the type comprising a threaded portion and a driving portion adapted to allow transmission to said threaded portion of a tightening or loosening torque at the by means of a wrench or the like, the coupling of the wrench or the like with said driving part being carried out through an imprint included in said drive part and a complementary recess included in said wrench or the like, and whose structural and dimensional characteristics are capable of constituting a code, and it is essentially characterized in that said driving portion is divided, in the longitudinal direction, into at least two separate coaxial, distal and proximal parts, by a weakening groove so as to be connected by a reduced cross-sectional area capable of breaking when said distal portion is subjected to a torque greater than a threshold torque lower than that required to achieve the desired fixation, and in that the fragment of impression that includes said proximal portion is designed capable of increasing the attachment capacity so at least just sufficient to allow the application of the required torque.
L'application du couple requis uniquement à la partie distale entraine la séparation de cette dernière du reste du dispositif, tandis que la partie proximale ne présente pas à elle seule suffisamment de moyens d'accrochage pour permettre la transmission du couple requis. Ainsi, le serrement ou le desserrement du dispositif ne peut être réalisé que lorsqu'il y a accouplement de la clé ou analogue avec la totalité de la partie c'est-à-dire les parties proximale et distale.Application of the required torque only to the distal portion causes separation of the latter from the rest of the device, while the proximal portion alone does not have sufficient attachment means to allow the transmission of the required torque. Thus, the tightening or loosening of the device can be achieved only when there is coupling of the key or the like with the entire part that is to say the proximal and distal parts.
Selon une caractéristique additionnelle du dispositif selon l'invention, la partie proximale et/ou la partie distale présente un profil de forme générale tronconique.According to an additional feature of the device according to the invention, the proximal portion and / or the distal portion has a generally frustoconical shape profile.
Selon un mode de réalisation particulier du dispositif selon l'invention, le fragment d'empreinte de la partie proximale est décalé angulairement par rapport à celui de la partie distale, tandis l'empreinte complémentaire de la clé ou analogue est divisée en deux parties décalées angulairement de la même valeur, et séparées dans le sens longitudinal d'un espace correspondant à l'épaisseur de la partie distale, en sorte de permettre à celle destinée à coopérer avec le fragment d'empreinte de la partie proximale, après franchissement du fragment d'empreinte de la partie distale, d'être déplacée dans la gorge de fragilisation, sous l'effet du pivotement de la clé ou analogue, pour ensuite être engagée dans ledit fragment d'empreinte de la partie proximale. Selon un autre mode de réalisation particulier du dispositif selon l'invention, les empreintes sur les parties distale et proximale présentent des dispositions différentes en sorte de constituer des codes différents, lesdites parties distale et proximale étant de diamètres différents appropriés.According to a particular embodiment of the device according to the invention, the imprint fragment of the proximal portion is angularly offset from that of the distal portion, while the complementary imprint of the key or the like is divided into two staggered portions. angularly of the same value, and separated in the longitudinal direction of a space corresponding to the thickness of the distal portion, so as to allow that intended to cooperate with the impression fragment of the proximal portion, after crossing the fragment impression of the distal portion, to be moved in the weakening groove, under the effect of the pivoting of the key or the like, to then be engaged in said cavity fragment of the proximal portion. According to another particular embodiment of the device according to the invention, the imprints on the distal and proximal portions have different arrangements so as to constitute different codes, said distal and proximal portions being of different diameters appropriate.
Selon une autre caractéristique additionnelle du dispositif selon l'invention, les empreintes se présentent sous la forme de gorges longitudinales.According to another additional feature of the device according to the invention, the impressions are in the form of longitudinal grooves.
Selon une autre caractéristique additionnelle du dispositif selon l'invention, les gorges longitudinales sont de section transversale en forme de portion de cercle.According to another additional characteristic of the device according to the invention, the longitudinal grooves are of cross section in the form of a portion of a circle.
Selon une autre caractéristique additionnelle du dispositif selon l'invention, les gorges sont d'une profondeur qui varie dans le sens longitudinal.According to another additional feature of the device according to the invention, the grooves are of a depth which varies in the longitudinal direction.
Selon une autre caractéristique additionnelle du dispositif selon l'invention, il est réalisé en matériau ferreux, tandis que la clé ou analogue, et notamment le fond de celle-ci, est munie de moyens magnétiques aptes à favoriser l'accouplement.According to another additional feature of the device according to the invention, it is made of ferrous material, while the key or the like, and in particular the bottom thereof, is provided with magnetic means capable of promoting coupling.
Les avantages et les caractéristiques du dispositif selon l'invention, ressortiront plus clairement de la description qui suit et qui se rapporte au dessin annexé, lequel en représente plusieurs modes de réalisation non limitatifs.The advantages and characteristics of the device according to the invention will become more clearly apparent from the description which follows and which refers to the appended drawing, which represents several non-limiting embodiments thereof.
Dans le dessin annexé :In the attached drawing:
- la figure 1 représente une vue schématique de dessus d'un dispositif de fixation antivol selon l'invention.- Figure 1 shows a schematic top view of an antitheft fastening device according to the invention.
la figure 2 représente une vue schématique en coupe longitudinale partielle du même dispositif. - la figure 3 représente une vue schématique de dessous d'une clé adaptée au manœuvrement de ce dispositif.FIG. 2 represents a schematic view in partial longitudinal section of the same device. - Figure 3 shows a schematic bottom view of a key adapted to the operation of this device.
- la figure 4 représente une vue schématique de dessus d'un mode de réalisation particulier du même dispositif.- Figure 4 shows a schematic top view of a particular embodiment of the same device.
- la figure 5 représente une vue schématique de dessous d'une clé adaptée à ce mode de réalisation particulier.- Figure 5 shows a schematic bottom view of a key adapted to this particular embodiment.
En référence aux figures 1 et 2, on peut voir un dispositif 1 de fixation selon l'invention qui comporte de manière traditionnelle, comme cela est visible sur la figure 2, une partie filetée 2 et une tête 3 destinée à permettre la transmission du couple d'entraînement en rotation de la partie filetée 2. Le couple d'entraînement est transmis à la tête 3 par l'intermédiaire d'une clé 4, représentée sur la figure 3, l'accouplement étant réalisé au travers d'empreintes concordantes.With reference to FIGS. 1 and 2, there can be seen a fixing device 1 according to the invention which comprises in a conventional manner, as can be seen in FIG. 2, a threaded portion 2 and a head 3 intended to allow the transmission of the torque The driving torque is transmitted to the head 3 by means of a key 4, shown in FIG. 3, the coupling being made through matching impressions.
Sur la tête 3 l'empreinte consiste en un ensemble d'encoches 5 disposées sensiblement longitudinalement et réparties angulairement selon un arrangement qui crée un code, tandis que la clé 4 présente l'aspect général d'une douille 40, adaptable sur un outil, comportant intérieurement et périphériquement des nervures 41 sensiblement longitudinales de forme concordante à celle des encoches 5, et arrangées angulairement selon le même code.On the head 3 the impression consists of a set of notches 5 arranged substantially longitudinally and angularly distributed in an arrangement which creates a code, while the key 4 has the general appearance of a sleeve 40, adaptable to a tool, having internally and peripherally substantially longitudinal ribs 41 of a shape matching that of the notches 5, and arranged angularly according to the same code.
On notera que dans le mode de réalisation représenté, la tête 3 présente, de manière non limitative, une forme tronconique, que l'on retrouve également au niveau de la clé 4, qui permet de faciliter l'accouplement, et de compliquer le saisissement frauduleux de la tête 3 au moyen d'un outil de serrage.Note that in the embodiment shown, the head 3 has, not limited to, a frustoconical shape, which is also found at the key 4, which facilitates the coupling, and complicate the seizure fraudulent head 3 by means of a clamping tool.
Selon l'invention, la tête 3 est divisée en deux parties coaxiales, une partie distale 6 et une partie proximale 7, reliées par une zone intermédiaire 8 de moindre section et séparées par une gorge périphérique 80.According to the invention, the head 3 is divided into two coaxial parts, a distal portion 6 and a proximal portion 7, connected by an intermediate zone 8 of lesser section and separated by a peripheral groove 80.
Les encoches 5 s'étendent sur les deux parties 6 et 7, et se présentent sous la forme de deux segments, respectivement 56 et 57, séparés par la gorge 80.The notches 5 extend over the two parts 6 and 7, and are in the form of two segments, respectively 56 and 57, separated by the groove 80.
La zone intermédiaire 8 présente, de fabrication, la particularité de constituer une zone de fragilisation, apte à rompre sous l'application d'un couple au-delà d'une certaine valeur, laquelle est inférieure à celle du couple requis pour la fixation réalisée par le dispositif selon l'invention.The intermediate zone 8 has, of manufacture, the particularity of constituting an embrittlement zone, capable of breaking under the application of a torque beyond a certain value, which is lower than that of the torque required for the fixation performed. by the device according to the invention.
Ainsi, l'application à la seule partie distaie 6 du couple requis au dévissage a pour effet la rupture de la tête 3 au niveau de la zone intermédiaire 8, ne laissant que la partie proximale 7 pour transmettre le couple de dévissage. Or, les segments d'encoches 57 de la partie proximale 7 sont conçus en sorte de ne pas permettre la transmission d'un tel couple.Thus, the application to the single part 6 of the torque required to unscrewing has the effect of breaking the head 3 at the intermediate zone 8, leaving only the proximal portion 7 to transmit the unscrewing torque. However, the notch segments 57 of the proximal portion 7 are designed so as not to allow the transmission of such a torque.
En effet, les segments d'encoches 57 de la partie proximale 7 sont conçus en sorte de permettre d'augmenter suffisamment la capacité de transmission du couple requis à la tête 3.Indeed, the notch segments 57 of the proximal portion 7 are designed so as to allow to increase sufficiently the transmission capacity of the required torque to the head 3.
Ainsi, le couple requis ne peut être transmis efficacement et sans rupture que s'il est transmis simultanément aux parties distaie 6 et proximale 7.Thus, the required torque can be transmitted efficiently and without breakage only if it is transmitted simultaneously to the distal 6 and proximal 7 parts.
Dans le cas d'une tentative de dévissage frauduleux au moyen d'un outil de serrage tel qu'une pince, il est difficile de saisir simultanément les parties distale 6 et proximale 7, et ce d'autant plus si la tête 3 présente une forme générale tronconique. Une telle tentative se solde donc par la rupture de la zone intermédiaire 8, tandis que le saisissement de la partie proximale 6 est impossible, si ce n'est en atelier. On notera qu'une tentative de dévissage de la tête 3 au moyen d'un burin a les mêmes effets, il est en effet difficile de transmettre par frappe le couple requis de manière précise aux segments 56 et 57.In the case of an attempt to unscrew fraudulently by means of a clamping tool such as a clamp, it is difficult to simultaneously grasp the distal 6 and proximal 7, and all the more so if the head 3 has a general frustoconical shape. Such an attempt therefore results in the breaking of the intermediate zone 8, while the seizing of the proximal portion 6 is impossible, except in the workshop. Note that an attempt to unscrew the head 3 by means of a chisel has the same effects, it is indeed difficult to transmit by striking the torque required precisely segments 56 and 57.
Les encoches 5 et les nervures 41 correspondantes doivent présenter des formes offrant peu de prise, en étant par exemple, non limitativement, de section en portion de cercle. Les encoches 5 peuvent, que la forme générale de la tête 3 soit ou non tronconique, être de profondeur variable. Il peut être ainsi prévu que la profondeur des encoches 5 aille en diminuant, de la partie distale 6 vers la partie proximale 7, sorte que les possibilités d'accrochage soient minimums au niveau de la partie proximale.The notches 5 and the ribs 41 corresponding must have forms with little grip, being for example, not limited to section in a portion of a circle. The notches 5 may, whether the general shape of the head 3 is frustoconical or not, be of variable depth. It can thus be expected that the depth of the notches 5 decreases, from the distal portion 6 to the proximal portion 7, so that the attachment possibilities are minimum at the proximal portion.
II est également possible que les encoches longitudinales 5 ne soient pas d'axe parallèle à celui du dispositif 1, mais inclinées chacune selon un certain angle, autre que celui dû à une éventuelle tronconicité de la tête 3, orienté de manière à occasionner le ripage d'un outil de frappe.It is also possible that the longitudinal notches 5 are not parallel to the axis of the device 1, but each inclined at an angle, other than that due to possible tronconicity of the head 3, oriented so as to cause shifting a typing tool.
On notera que la tronconicité de la tête 3 présente un autre avantage que ceux évoqués précédemment, celui de ne permettre l'accouplement de la clé 4 à la tête 3, et donc la transmission du couple requis, que lorsque la clé 4 est engagée complètement sur la tête 3, c'est-à-dire lorsqu'elle est accouplée simultanément aux segments d'encoches 57 de la partie proximale 7.Note that the truncation of the head 3 has another advantage than those mentioned above, that of only allowing the coupling of the key 4 to the head 3, and therefore the transmission of the required torque, only when the key 4 is engaged completely. on the head 3, that is to say when it is coupled simultaneously to the notch segments 57 of the proximal portion 7.
En effet, dans le cas d'une tête de forme non tronconique, cylindrique par exemple, l'enfoncement incomplet de la clé 4 sur la tête 3 peut avoir pour conséquence l'application, de manière malencontreuse, du couple à la partie distale 6 uniquement.Indeed, in the case of a non-frustoconical shaped head, for example cylindrical, the incomplete depression of the key 4 on the head 3 may result in the unfortunate application of the torque to the distal portion 6 only.
On notera que pour éviter les conséquences d'une telle manipulation malencontreuse, il est possible d'équiper la clé 4, notamment le fond de celle-ci, de moyens magnétiques aptes à favoriser l'accouplement.Note that to avoid the consequences of such an unfortunate manipulation, it is possible to equip the key 4, especially the bottom thereof, magnetic means capable of promoting mating.
En référence maintenant à la figure 4, on peut voir une mode de réalisation particulier du dispositif selon l'invention. Dans cette variante, la tête 3 est également divisée en une partie proximale 7 et une partie distale 6, par une gorge périphériqueReferring now to Figure 4, one can see a particular embodiment of the device according to the invention. In this variant, the head 3 is also divided into a proximal portion 7 and a distal portion 6, by a peripheral groove
80, qui comportent chacune des segments d'encoches respectivement 57 et 56, avec la particularité que les segments d'encoche 57 sont décalés angulairement par rapport aux segments d'encoche 56.80, which each have notch segments 57 and 56, respectively, with the feature that the notch segments 57 are angularly offset from the notch segments 56.
La figure 5 représente la clé 4 adaptée à cette tête 3 et permettant de la manœuvrer. Cette clé 4 consiste en une douille 40 comportant intérieurement et périphériquement des moyens d'accouplement aux segments d'encoche 56 et 57.Figure 5 shows the key 4 adapted to this head 3 and for the maneuvering. This key 4 consists of a bushing 40 having internally and peripherally coupling means to the notch segments 56 and 57.
Ces moyens d'accouplement consistent en des pions répartis en deux séries, une série de pions 46 destinés à coopérer avec les segments d'encoche 56, et une série de pions 47 destinés à coopérer avec les segments d'encoche 57, la série de pions 46 étant bien entendu décalée angulairement par rapport à la série de pions 47, du même angle de décalage que les segments d'encoche 56 et 57. De plus, la série de pions 46 est séparée de la série de pions 47 par un espace 42 d'une largeur correspondant à l'épaisseur de la partie distale 6, tandis que l'épaisseur des pions 47 est inférieure à la largeur de la gorge 80.These coupling means consist of pieces divided into two series, a series of pins 46 intended to cooperate with the notch segments 56, and a series of pins 47 intended to cooperate with the notch segments 57, the series of pins 46 being of course offset angularly relative to the series of pins 47, the same offset angle as the notch segments 56 and 57. In addition, the series of pins 46 is separated from the series of pins 47 by a space 42 of a width corresponding to the thickness of the distal portion 6, while the thickness of the pins 47 is less than the width of the groove 80.
En pratique la clé 4 est approchée de la tête 3, les pions 47 engagés dans les segments d'encoche 56 jusqu'à venir en butée contre la partie proximale 7, puis par rotation axiale les pions 47 sont amenés en regard des segments d'encoche 57 en passant dans la gorge 80, ce qui amène également les pions 46 en regard des segments d'encoche 56, puis en prolongeant la poussée on accouple entièrement la clé 4 à la tête 3. Un tel dispositif présente donc un code plus complexe que celui du premier mode de réalisation. Avantageusement, il peut être prévu de combiner la disposition des segments 56 et 57 d'encoches avec l'angle de décalage en sorte qu'aucun segment d'encoche 56 ne soit dans l'alignement d'un segment d'encoche 57, rendant alors encore plus improbable un possible dévissage avec un outil de frappe.In practice, the key 4 is approaching the head 3, the pins 47 engaged in the notch segments 56 to abut against the proximal portion 7, and then by axial rotation the pins 47 are brought opposite the segments of FIG. notch 57 passing through the groove 80, which also brings the pins 46 next to the slot segments 56, then extending the thrust is fully coupled to the key 4 to the head 3. Such a device therefore has a more complex code than that of the first embodiment. Advantageously, it may be provided to combine the arrangement of the notch segments 56 and 57 with the offset angle so that no notch segment 56 is in alignment with a notch segment 57, making then even more unlikely a possible unscrewing with a typing tool.
Par ailleurs, dans le mode de réalisation représenté, la tête 3 est de forme tronconique, mais elle pourrait être cylindrique sans présenter les risques de sa détérioration malencontreuse évoqués pour le mode de réalisation précédent. En effet, le couple ne peut être transmis à la partie distaie 6 qu'au travers des pions 46, lesquels ne peuvent être engagés dans les segments d'encoche 56 que si les pions 47 coopèrent avec les segments d'encoche 57.Moreover, in the embodiment shown, the head 3 is of frustoconical shape, but it could be cylindrical without presenting the risks of its unfortunate deterioration mentioned for the previous embodiment. Indeed, the torque can be transmitted to the distal portion 6 only through the pins 46, which can be engaged in the notch segments 56 only if the pins 47 cooperate with the notch segments 57.
Dans les modes de réalisation décrits, la tête 3 est divisée en deux parties proximale et distale, mais il est bien évident qu'il est possible de la diviser en plus de deux parties, en réalisant ainsi plusieurs fragilisations.In the embodiments described, the head 3 is divided into two parts proximal and distal, but it is obvious that it is possible to divide it into more than two parts, thus achieving several embrittlement.
D'autre part, il est également possible de prévoir que les parties distale 6 et proximale 7 présentent des codes différents, à la condition que les diamètres d'implantation des codes soient appropriés, c'est-à-dire que le diamètre de la partie distale 6 soit inférieur à celui de la partie proximale 7, et en sorte d'autoriser le passage de la clé 4. On the other hand, it is also possible to provide that the distal 6 and proximal 7 parts have different codes, provided that the implantation diameters of the codes are appropriate, that is to say that the diameter of the distal portion 6 is less than that of the proximal portion 7, and so as to allow the passage of the key 4.

Claims

REVENDICATIONS
1) Dispositif de fixation antivol, notamment pour roues de véhicules automobiles, du type comprenant une partie filetée 1) Anti-theft fixing device, in particular for motor vehicle wheels, of the type comprising a threaded part
(2) et une partie d'entraînement (2) and a training part
(3) apte à permettre la transmission à ladite partie filetée (2) d'un couple de serrage ou de desserrage au moyen d'une clé ou analogue (4) , l'accouplement de la clé ou analogue (3) capable of allowing the transmission to said threaded part (2) of a tightening or loosening torque by means of a key or the like (4), the coupling of the key or the like
(4) avec ladite partie d'entraînement (3) étant réalisé au travers d'une empreinte (4) with said driving part (3) being produced through an imprint
(5) que comporte ladite partie d'entraînement (3) et d'une empreinte complémentaire (41) que comporte ladite clé ou analogue (4) , et dont les caractéristiques structurelles et dimensionnelles sont aptes à constituer un code, caractérisé en ce que ladite partie d'entraînement (3) est divisée, dans le sens longitudinal, en au moins deux parties coaxiales, distale (6) et proximale (7) , séparées par une gorge de fragilisation (80) en sorte d'être reliées par une zone (8) de section transversale réduite apte à rompre lorsque ladite partie distale (6) est soumise à un couple supérieur à un couple seuil inférieur à celui requis pour réaliser la fixation désirée, et en ce que le fragment d'empreinte (57) que comporte ladite partie proximale (7) est conçu apte à augmenter la capacité d'accrochage de manière au moins juste suffisante à permettre l'application du couple requis.(5) which comprises said driving part (3) and a complementary imprint (41) which comprises said key or the like (4), and whose structural and dimensional characteristics are capable of constituting a code, characterized in that said driving part (3) is divided, in the longitudinal direction, into at least two coaxial parts, distal (6) and proximal (7), separated by a weakening groove (80) so as to be connected by a zone (8) of reduced cross section capable of breaking when said distal part (6) is subjected to a torque greater than a threshold torque lower than that required to achieve the desired fixation, and in that the impression fragment (57) that said proximal part (7) comprises is designed capable of increasing the hooking capacity in a manner at least just sufficient to allow the application of the required torque.
2) Dispositif de fixation antivol selon la revendication 1, caractérisé en ce que la partie proximale (7) et/ou la partie distale (6) présente un profil de forme générale tronconique.2) Anti-theft fixing device according to claim 1, characterized in that the proximal part (7) and/or the distal part (6) has a profile of generally frustoconical shape.
3) Dispositif de fixation antivol selon la revendication 1 ou la revendication 2, caractérisé en ce que le fragment d'empreinte (57) de la partie proximale (7) est décalé angulairement par rapport à celui (56) de la partie distale (6) , tandis l'empreinte complémentaire de la clé ou analogue (4) est divisée en deux parties (47, 46) décalées angulairement de la même valeur, et séparées dans le sens longitudinal d'un espace (42) correspondant à l'épaisseur de la partie distale (6) , en sorte de permettre à celle (47) destinée à coopérer avec le fragment d'empreinte (57) de la partie proximale (7) , après franchissement du fragment d'empreinte (56) de la partie distale3) Anti-theft fixing device according to claim 1 or claim 2, characterized in that the impression fragment (57) of the proximal part (7) is angularly offset relative to that (56) of the distal part (6) ) , while the complementary imprint of the key or the like (4) is divided into two parts (47, 46) angularly offset by the same value, and separated in the longitudinal direction by a space (42) corresponding to the thickness of the part distal part (6), so as to allow that (47) intended to cooperate with the impression fragment (57) of the proximal part (7), after crossing the impression fragment (56) of the distal part
(6) , d'être déplacée dans la gorge de fragilisation (80) , sous l'effet du pivotement de la clé ou analogue (4) , pour ensuite être engagée dans ledit fragment d'empreinte (57) de la partie proximale (7) .(6), to be moved in the weakening groove (80), under the effect of the pivoting of the key or the like (4), to then be engaged in said impression fragment (57) of the proximal part ( 7).
4) Dispositif de fixation antivol selon la revendication 1 ou la revendication 2, caractérisé en ce que les empreintes sur les parties distale (6) et proximale (7) présentent des dispositions différentes en sorte de constituer des codes différents, lesdites parties distale (6) et proximale (7) étant de diamètres différents appropriés.4) Anti-theft fixing device according to claim 1 or claim 2, characterized in that the imprints on the distal (6) and proximal (7) parts have different arrangements so as to constitute different codes, said distal parts (6) ) and proximal (7) being of different appropriate diameters.
5) Dispositif de fixation antivol selon l'une quelconque des revendications précédentes, caractérisé en ce que les empreintes (5) de la partie d'entraînement (3) se présentent sous la forme de gorges longitudinales.5) Anti-theft fixing device according to any one of the preceding claims, characterized in that the indentations (5) of the driving part (3) are in the form of longitudinal grooves.
6) Dispositif de fixation antivol selon la revendication 5, caractérisé en ce que les gorges longitudinales (5) sont de section transversale en forme de portion de cercle.6) Anti-theft fixing device according to claim 5, characterized in that the longitudinal grooves (5) have a cross section in the shape of a portion of a circle.
7) Dispositif de fixation antivol selon la revendication 5 ou la revendication 6, caractérisé en ce que les gorges (5) sont d'une profondeur qui varie dans le sens longitudinal.7) Anti-theft fixing device according to claim 5 or claim 6, characterized in that the grooves (5) have a depth which varies in the longitudinal direction.
8) Dispositif de fixation antivol selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est réalisé en matériau ferreux, tandis que la clé ou analogue (4) , et notamment le fond de celle-ci, est munie de moyens magnétiques aptes à favoriser l'accouplement. 8) Anti-theft fixing device according to any one of the preceding claims, characterized in that it is made of ferrous material, while the key or the like (4), and in particular the bottom thereof, is provided with magnetic means capable of promoting coupling.
PCT/FR2005/050763 2004-10-05 2005-09-20 Device for fixing an anti-theft system, in particular for motor vehicle wheels WO2006037911A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0452273 2004-10-05
FR0452273A FR2876059B1 (en) 2004-10-05 2004-10-05 ANTI-THEFT FIXING DEVICE, IN PARTICULAR FOR AUTOMOTIVE VEHICLE WHEELS

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JP2016527062A (en) * 2013-10-11 2016-09-08 ライト メディカル テクノロジー インコーポレイテッドＷｒｉｇｈｔ Ｍｅｄｉｃａｌ Ｔｅｃｈｎｏｌｏｇｙ， Ｉｎｃ． Tapered cylindrical cruciform saddle-shaped toe implant and method

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Publication number Priority date Publication date Assignee Title
FR3020026B1 (en) * 2014-04-17 2018-02-09 Societe Des Forges De Froncles ANTI-THEFT FIXING DEVICE FOR SOLIDARIZING A WHEEL ON THE HUB OF A MOTOR VEHICLE
RU194467U1 (en) * 2019-10-18 2019-12-11 Сергей Борисович Бирюков LOCK FOR CAR WHEELS
RU194466U1 (en) * 2019-10-18 2019-12-11 Сергей Борисович Бирюков LOCK FOR CAR WHEELS

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GB2006371A (en) 1977-10-04 1979-05-02 Hart H Fastening means
FR2567215A1 (en) 1984-07-04 1986-01-10 Lanneree Daniel Anti-theft device for fixing a member such as a vehicle wheel by screwing
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Publication number Priority date Publication date Assignee Title
JP2016527062A (en) * 2013-10-11 2016-09-08 ライト メディカル テクノロジー インコーポレイテッドＷｒｉｇｈｔ Ｍｅｄｉｃａｌ Ｔｅｃｈｎｏｌｏｇｙ， Ｉｎｃ． Tapered cylindrical cruciform saddle-shaped toe implant and method

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FR2876059B1 (en) 2006-12-08

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