WO1991012438A1 - Locking and unlocking arrangement for a screw or nut device, particularly a theft prevention screw or nut on a vehicle wheel - Google Patents

Locking and unlocking arrangement for a screw or nut device, particularly a theft prevention screw or nut on a vehicle wheel Download PDF

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Publication number
WO1991012438A1
WO1991012438A1 PCT/FR1991/000107 FR9100107W WO9112438A1 WO 1991012438 A1 WO1991012438 A1 WO 1991012438A1 FR 9100107 W FR9100107 W FR 9100107W WO 9112438 A1 WO9112438 A1 WO 9112438A1
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WO
WIPO (PCT)
Prior art keywords
screw
fixing
arrangement
arrangement according
tool
Prior art date
Application number
PCT/FR1991/000107
Other languages
French (fr)
Inventor
Daniel Lanneree
Original Assignee
Daniel Lanneree
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 Daniel Lanneree filed Critical Daniel Lanneree
Publication of WO1991012438A1 publication Critical patent/WO1991012438A1/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
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/0046—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool having one eccentric circular or polygonal recess or protrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/48—Spanners; Wrenches for special purposes
    • B25B13/485—Spanners; Wrenches for special purposes for theft-proof screws, bolts or nuts
    • 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

Definitions

  • the present invention relates to a locking and unlocking arrangement for a screw or nut device, in particular intended for an anti-theft screw or nut for vehicle wheels.
  • the vehicle wheels each comprising a tire mounted on a rim are generally fixed to the disc by screwing screws or nuts. These screws and nuts are standard, namely with a classic hexagonal head.
  • Anti-theft screws are available on the market to replace one of the standard screws on each wheel. These anti-theft screws have a specifically shaped head so that they can be turned for screwing or unscrewing only by means of a tool specific to the screw head.
  • the coding of the screw head and of the tool part requires complex apparatuses, for example a machine with an indexing divider plate or the like.
  • the electrolytic treatment can generally only be done at the end of manufacture and therefore an assembly arrangement for the different parts is necessary at the end of manufacture.
  • the locking and unlocking arrangement for a screw or nut device Comprises complementary gripping surfaces of the fixing part and the tool part which are formed by intermediate parts. , integral with one of the surface of the fixing part and the other of the corresponding surface of the tool part, these intermediate parts comprising complementary surfaces and being fixed to the fixing and tool parts by a cooperative arrangement by shape, indexed and identical.
  • the arrangement of cooperation by indexed form is constituted by a central or eccentric interlocking connection.
  • the central or eccentric interlocking connection is preferably a toothing connection.
  • each toothing consists of a regular toothing, from which a tooth has been removed.
  • the complementary surfaces of the intermediate parts can also be indexed by their shape or by their position.
  • the complementary surfaces are preferably also formed by an interlocking connection.
  • Said interlocking connection consists of a centered or eccentric blind hole and a centered or eccentric pin.
  • the coding is done by two intermediate pieces, one for the screw and the other for the tool, the indexing of which is simple to perform and simple to reproduce.
  • indexing the cooperative arrangements connecting the fixing and tool parts to the intermediate parts a certain number of possible codings is obtained.
  • the indexing of the complementary surfaces of the intermediate parts the number of possible codings is multiplied.
  • the transition to the electrolytic bath can be carried out immediately after the manufacture of each individual part.
  • the fitting of the screw head and the tool part is done by a simple and unique arrangement preferably by a single blind hole centered or eccentric and a single pin centered or eccentric. Nesting is therefore obviously simpler to carry out than in the case of devices of the prior art.
  • FIGS. 1 and 2 represent a fixing screw according to the invention (FIG. 1) and its intermediate part (FIG. 2) intended to form its grip surface,
  • Figures 3 and 4 show a tool part (Figure 3) according to the invention and its intermediate part ( Figure 4) intended to form its gripping surface.
  • Figures 1 and 2 therefore show the elements intended to fix any part and in particular a vehicle wheel rim to the disc.
  • the fixing in itself is therefore carried out by screwing in a conventional manner by the fixing element 1 in the case shown consisting of a screw with a threaded rod 11 and a head 12.
  • the fixing element 1 in the case shown consisting of a screw with a threaded rod 11 and a head 12.
  • the screw head 12 is made a toothed cavity 13, the indexing characteristics of which will be described later.
  • an intermediate part 3 which in turn is formed by a cylindrical part 31 having on one of its faces a cylindrical cavity 32 centered or eccentric and on the other of its faces " a cylindrical part in projection and toothed 33 itself centered or eccentric.
  • the cavity 32 of the intermediate part 3 intended to be connected to the screw can always be arranged in the same way; similarly, the possible eccentricity of the cavity 13 of the screw head 12 and of the toothed part 33 of the intermediate part 3 can be standard.
  • indexing to achieve a set of specific fixing is essentially achieved by a particular characteristic of the cooperating teeth of the cavity 13 and of the part 33.
  • this indexing is obtained by removing a tooth on the male and female teeth and by locating.
  • a zero position for the positioning of the intermediate parts is identified on the screw l and the tool part 2, from which by rotation tooth by tooth of the corresponding intermediate part 3, 3 ′, the various indexed positions of the intermediate parts 3, 3 'with respect to the tool 2 and fixing parts 1.
  • Figures 3 and 4 show the tool part 2 and its corresponding intermediate part 3 '.
  • the tool part 2 therefore comprises a part 21 consisting of a set of conventional hexagonal heads intended to be actuated by a crank key or equivalent.
  • the body 22 of the tool part 2 has on its upper surface a toothed cavity 23 centered or eccentric.
  • the body 22 may have a hollow cylindrical part 24 which has the function of facilitating and guiding the introduction of the screw head into the tool part
  • the intermediate part corresponding to the tool part 2 and referenced 3 ' is formed, in a similar manner to the intermediate part 3, of a cylindrical part 31' comprising on one of its faces a toothed projecting part 33 '.
  • a centered or eccentric pin 32 intended to come to cooperate with the cavity 32 of the intermediate part 3 of the screw 1. Consequently this possible eccentricity is identical to that of the cavity 32 .
  • the teeth of the protruding part 33 ′ and of the cavity 23 ′ are intended to cooperate and are indexed so that the part 3 ′ comes to be arranged in a precise position corresponding exactly to the position of the part 3 on the screw head 12.
  • the indexing of the toothed parts of the tool part 2 be identical to the indexing of the toothed parts of the screw 1.
  • An advantage of this locking method is that it is possible to identify the indexing of the teeth on the four different parts, more precisely, in the case of the preferred embodiment, the tooth removed.
  • the establishment of the two intermediate parts 3 and 3 'respectively on the screw head 12 and on the body of the tool part 2 is relatively easy.
  • indexing described above can be supplemented by the indexing of the complementary surfaces of the intermediate parts, namely of the tenon arrangement 32 ′ and cavity 32 both centered or eccentric. This can be done by the various shape of the tenon 32 ′ and the cavity 32 or by the various dimensions of the offset.
  • the locking arrangement described above can also be adapted to a fixing system with a blind thread nut, the nut head then having the same characteristics as the screw head 12 described.
  • the arrangement described has the advantage of being able to be produced on standard nuts or screws by simple machining.
  • the method of manufacturing the elements described above will preferably be as follows.
  • the draft of the screw 1 with its toothed cavity formed by cold striking is passed to the electrolysis bath. Its intermediate part 3 is toothed, cold struck and bathed.
  • the screw 1 and its intermediate part 3 are assembled according to the predetermined indexing. In the same way the tool part 2 and its intermediate part 3 'are shaped and assembled according to an indexing in the same way as the screw and its intermediate part.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Plates (AREA)
  • Transmission Devices (AREA)

Abstract

A locking and unlocking arrangement for a screw or nut fixing device, particularly a theft prevention screw or nut for the wheel of a vehicle, the gripping surface and the fixing piece having a specifically coded shape so that they can only be screwed or unscrewed by means of the complementary surface of a tool which matches the fixing piece. In the case of a screw, a centered or offset toothed cavity (13) is formed in the head (12) of the screw (1), an intermediate piece (3) made from a cylindrical piece (31) is combined with said screw (1) and has on one of its sides a centered or offset cylindrical cavity (32), while the other side carries a toothed cylindrical projecting portion (33) which is also centered or offset. Indexing takes place by connecting the teeth (13, 33). The related tool is made to correspond.

Description

AGENCEMENT DE VERROUILLAGE ET DE DEVERROUILLAGE POUR DISPOSITIF A VIS OU ECROU, EN PARTICULIER DES TINE A UNE VIS OU UN ECROU ANTIVOL POUR ROUE DE VEHICULE.LOCKING AND UNLOCKING ARRANGEMENT FOR A SCREW OR NUT DEVICE, PARTICULARLY A TIGHT SCREW OR ANTITHEFT NUT FOR VEHICLE WHEEL.
La présente invention se rapporte à un agencement de verrouillage et de déverrouillage pour dispositif à vis ou écrou, en particulier destiné à une vis ou un écrou antivol pour roues de véhicules. Les roues de véhicules comportant chacune un pneumatique monté sur une jante sont fixées en général sur le disque par vissage de vis ou d'écrous. Ces vis et écrous sont standards à savoir à tête hexagonale classique. Il existe sur le marché des vis antivol destinées à remplacer l'une des vis standards de chaque roue. Ces vis antivol ont une tête conformée de façon spécifique afin de ne pouvoir être tournées pour vissage ou dévissage que par l'intermédi?ire d'un outil propre à la tête de vis. Ces types de dispositifs antérieurs posent un certain nombre de problèmes essentiellement quant à sa fabrication.The present invention relates to a locking and unlocking arrangement for a screw or nut device, in particular intended for an anti-theft screw or nut for vehicle wheels. The vehicle wheels each comprising a tire mounted on a rim are generally fixed to the disc by screwing screws or nuts. These screws and nuts are standard, namely with a classic hexagonal head. Anti-theft screws are available on the market to replace one of the standard screws on each wheel. These anti-theft screws have a specifically shaped head so that they can be turned for screwing or unscrewing only by means of a tool specific to the screw head. These types of prior devices pose a number of problems essentially with regard to its manufacture.
Le codage de la tête de vis et de la pièce d'outil nécessite des appareillages complexes par exemple une machine à plateau diviseur à indexation ou autres.The coding of the screw head and of the tool part requires complex apparatuses, for example a machine with an indexing divider plate or the like.
Le traitement électrolytique ne peut se faire en général qu'en fin de fabrication et donc un agencement de montage des différentes pièces est nécessaire en fin de fabrication.The electrolytic treatment can generally only be done at the end of manufacture and therefore an assembly arrangement for the different parts is necessary at the end of manufacture.
Enfin en cas de perte de la pièce d'outil, seul un code numérique ou autre associé à l'ensemble des pièces peut permettre de retrouver une pièce d'outil correspondante. La présente invention se propose donc de résoudre ces problèmes.Finally, in the event of loss of the tool part, only a numerical or other code associated with all of the parts can make it possible to find a corresponding tool part. The present invention therefore proposes to solve these problems.
Pour ce faire, l'agencement de verrouillage et de déverrouillage pour dispositif à vis ou écrou, conforme à l'invention .comporte des surfaces de prise complémentaires de la pièce de fixation et la pièce d'outil qui sont formées-par des pièces intermédiaires, solidaire l'une de la surface de la pièce de fixation et l'autre de la surface correspondante de la pièce d'outil, ces pièces intermédiaires comportant des surfaces complémentaires et étant fixées aux pièces de fixation et d'outil par un agencement de coopération par forme, indexée et identique.To do this, the locking and unlocking arrangement for a screw or nut device, in accordance with the invention. Comprises complementary gripping surfaces of the fixing part and the tool part which are formed by intermediate parts. , integral with one of the surface of the fixing part and the other of the corresponding surface of the tool part, these intermediate parts comprising complementary surfaces and being fixed to the fixing and tool parts by a cooperative arrangement by shape, indexed and identical.
Selon un mode de réalisation préféré, l'agencement de coopération par forme indexée est constitué par une liaison par emboîtement centré ou excentré. La liaison par emboîtement centré ou excentrée est de préférence une liaison par denture.According to a preferred embodiment, the arrangement of cooperation by indexed form is constituted by a central or eccentric interlocking connection. The central or eccentric interlocking connection is preferably a toothing connection.
Selon un agencement particulier, chaque denture est constituée d'une denture régulière, à laquelle a été supprimée une dent. les surfaces complémentaires des pièces intermédiaires peuvent également être indexées par leur forme ou par leur position. Les surfaces complémentaires sont de préférence également constituées par une liaison par emboîtement. Ladite liaison par emboîtement est constituée d'un trou borgne centré ou excentré et d'un picot centré ou excentré.According to a particular arrangement, each toothing consists of a regular toothing, from which a tooth has been removed. the complementary surfaces of the intermediate parts can also be indexed by their shape or by their position. The complementary surfaces are preferably also formed by an interlocking connection. Said interlocking connection consists of a centered or eccentric blind hole and a centered or eccentric pin.
Ainsi, le codage se fait par deux pièces intermédiaires l'une pour la vis l'autre pour l'outil dont l'indexation est simple à réaliser et simple à reproduire. Par indexation des agencements de coopération reliant pièces de fixation et d'outil aux pièces intermédiaires, on obtient un certain nombre de codages possibles. En ajoutant à cela, l'indexation des surfaces complémentaires des pièces intermédiaires on multiplie le nombre de codages possibles.Thus, the coding is done by two intermediate pieces, one for the screw and the other for the tool, the indexing of which is simple to perform and simple to reproduce. By indexing the cooperative arrangements connecting the fixing and tool parts to the intermediate parts, a certain number of possible codings is obtained. By adding to this, the indexing of the complementary surfaces of the intermediate parts, the number of possible codings is multiplied.
Le passage au bain électrolytique peut être réalisé immédiatement après fabrication de chaque pièce individuelle.The transition to the electrolytic bath can be carried out immediately after the manufacture of each individual part.
L'emboîtement de la tête de vis et de la pièce d'outil se fait par un agencement simple et unique de préférence par un seul trou borgne centré ou excentré et d'un seul picot centré ou excentré. L'emboîtement est donc manifestement plus simple à réaliser que dans le cas des dispositifs de l'art antérieur.The fitting of the screw head and the tool part is done by a simple and unique arrangement preferably by a single blind hole centered or eccentric and a single pin centered or eccentric. Nesting is therefore obviously simpler to carry out than in the case of devices of the prior art.
L'invention est exposée ci-après plus en détail à l'aide de dessins représentant seulement un mode d'exécution.The invention is set out below in more detail with the aid of drawings representing only one embodiment.
- les figures 1 et 2 représentent une vis de fixation conforme à l'invention (figure 1) et sa pièce intermédiaire (figure 2) destinée à former sa surface de prise,FIGS. 1 and 2 represent a fixing screw according to the invention (FIG. 1) and its intermediate part (FIG. 2) intended to form its grip surface,
- les figures 3 et 4 représentent une pièce d'outil (figure 3) conforme à l'invention et sa pièce intermédiaire (figure 4) destinée à former sa surface de prise. Sur les figures 1 et 2 sont donc représentés les éléments destinés à fixer une pièce quelconque et en particulier une jante de roue de véhicule sur le disque.- Figures 3 and 4 show a tool part (Figure 3) according to the invention and its intermediate part (Figure 4) intended to form its gripping surface. Figures 1 and 2 therefore show the elements intended to fix any part and in particular a vehicle wheel rim to the disc.
La fixation en soi est donc réalisée par vissage de façon classique par l'élément de fixation 1 dans le cas représenté constitué d'une vis avec une tige filetée 11 et une tête 12. Dans la tête de vis 12 est réalisée une cavité à denture 13 dont les caractéristiques d'indexation seront décrites plus loin. A cette vis 1 est associée une pièce intermédiaire 3 qui quant à elle est formée d'une pièce cylindrique 31 présentant sur l'une de ses faces une cavité cylindrique 32 centrée ou excentrée et sur l'autre de ses faces" une partie cylindrique en saillie et dentée 33 elle-même centrée ou excentrée.The fixing in itself is therefore carried out by screwing in a conventional manner by the fixing element 1 in the case shown consisting of a screw with a threaded rod 11 and a head 12. In the screw head 12 is made a toothed cavity 13, the indexing characteristics of which will be described later. With this screw 1 is associated an intermediate part 3 which in turn is formed by a cylindrical part 31 having on one of its faces a cylindrical cavity 32 centered or eccentric and on the other of its faces " a cylindrical part in projection and toothed 33 itself centered or eccentric.
Quelle que soit la vis de fixation 1, la cavité 32 de la partie intermédiaire 3 destinée à être reliée à la vis peut être toujours disposée de la même façon ; de même 1'excentrement éventuel de la cavité 13 de la tête de vis 12 et de la partie dentée 33 de la partie intermédiaire 3 peut être standard. Par contre l'indexation permettant de réaliser un ensemble de fixation spécifique est essentiellement réalisée par une caractéristique particulière des dentures coopérantes de la cavité 13 et de la partie 33.Whatever the fixing screw 1, the cavity 32 of the intermediate part 3 intended to be connected to the screw can always be arranged in the same way; similarly, the possible eccentricity of the cavity 13 of the screw head 12 and of the toothed part 33 of the intermediate part 3 can be standard. By cons indexing to achieve a set of specific fixing is essentially achieved by a particular characteristic of the cooperating teeth of the cavity 13 and of the part 33.
Selon un mode de réalisation préféré, cette indexation est obtenue par suppression d'une dent sur les dentures mâles et femelles et par repérage.According to a preferred embodiment, this indexing is obtained by removing a tooth on the male and female teeth and by locating.
Plus précisément on repère une position zéro de disposition des pièces intermédiaires sur la vis l et la pièce d'outil 2, à partir de laquelle par rotation dent par dent de la pièce intermédiaire correspondante 3, 3', on obtient les diverses positions indexées des pièces intermédiaires 3, 3' par rapport aux pièces d'outil 2 et de fixation 1.More precisely, a zero position for the positioning of the intermediate parts is identified on the screw l and the tool part 2, from which by rotation tooth by tooth of the corresponding intermediate part 3, 3 ′, the various indexed positions of the intermediate parts 3, 3 'with respect to the tool 2 and fixing parts 1.
Les figures 3 et 4 représentent quant à elles la pièce d'outil 2 et sa pièce intermédiaire correspondante 3' .Figures 3 and 4 show the tool part 2 and its corresponding intermediate part 3 '.
La pièce d'outil 2 comporte donc une partie 21 constituée d'un ensemble de têtes hexagonales classiques destinées à être actionnées par une clé de manivelle ou équivalent. Le corps 22 de la pièce d'outil 2 comporte sur sa surface supérieure une cavité dentée 23 centrée ou excentrée.The tool part 2 therefore comprises a part 21 consisting of a set of conventional hexagonal heads intended to be actuated by a crank key or equivalent. The body 22 of the tool part 2 has on its upper surface a toothed cavity 23 centered or eccentric.
De préférence mais de façon non systématique, le corps 22 peut présenter une partie cylindrique creuse 24 qui a pour fonction de faciliter et de guider l'introduction de la tête de vis dans la pièce d'outilPreferably but not systematically, the body 22 may have a hollow cylindrical part 24 which has the function of facilitating and guiding the introduction of the screw head into the tool part
2.2.
La pièce intermédiaire correspondant à la pièce d'outil 2 et référencée 3' est formée, de façon analogue à la pièce intermédiaire 3, d'une partie cylindrique 31' comportant sur une de ses faces une partie saillante dentée 33'. Par contre, sur l'autre de ses faces, elle comporte un tenon 32 centré ou excentré destiné à venir coopérer avec la cavité 32 de la partie intermédiaire 3 de la vis 1. En conséquence cet excentrement éventuel est identique à celui de la cavité 32. Tout co me dans le cas de la vis 1, les dentures de la partie saillante 33' et de la cavité 23' sont destinées à venir coopérer et sont indexées afin que la partie 3' vienne se disposer selon une position précise correspondant exactement à la position de la partie 3 sur la tête de vis 12. Pour ce faire, il suffit donc que l'indexation des parties dentées de la pièce d'outil 2 soierit identiques à l'indexation des parties dentées de la vis 1. Un intérêt de ce procédé de verrouillage est qu'il est possible de repérer sur les quatre différentes pièces l'indexation de la denture, plus précisément, dans le cas du mode de réalisation préféré la dent supprimée. Ainsi, la mise en place des deux pièces intermédiaires 3 et 3' respectivement sur la tête de vis 12 et sur le corps de la pièce d'outil 2 est relativement aisée.The intermediate part corresponding to the tool part 2 and referenced 3 'is formed, in a similar manner to the intermediate part 3, of a cylindrical part 31' comprising on one of its faces a toothed projecting part 33 '. On the other hand, on the other of its faces, it has a centered or eccentric pin 32 intended to come to cooperate with the cavity 32 of the intermediate part 3 of the screw 1. Consequently this possible eccentricity is identical to that of the cavity 32 . Just like me in the case of screw 1, the teeth of the protruding part 33 ′ and of the cavity 23 ′ are intended to cooperate and are indexed so that the part 3 ′ comes to be arranged in a precise position corresponding exactly to the position of the part 3 on the screw head 12. To do this, it is therefore sufficient that the indexing of the toothed parts of the tool part 2 be identical to the indexing of the toothed parts of the screw 1. An advantage of this locking method is that it is possible to identify the indexing of the teeth on the four different parts, more precisely, in the case of the preferred embodiment, the tooth removed. Thus, the establishment of the two intermediate parts 3 and 3 'respectively on the screw head 12 and on the body of the tool part 2 is relatively easy.
On peut également envisager qu'un repère soit disposé de façon visible sur la tête de vis 12 ou sur sa pièce intermédiaire 3 et sur le corps 22 de la pièce d'outil 2 ou de sa pièce intermédiaire 3'.It is also conceivable that a mark is placed visibly on the screw head 12 or on its intermediate piece 3 and on the body 22 of the tool piece 2 or of its intermediate piece 3 '.
Ainsi, en cas de perte de la pièce d'outil 2, il serait possible pour une personne initiée au code d'indexation de repérer le type de pièce d'outil nécessaire et cela sans nécessité de référence numérique ou autre.Thus, in the event of loss of the tool part 2, it would be possible for a person initiated to the indexing code to identify the type of tool part required and this without the need for a numerical or other reference.
L'indexation décrite ci-dessus peut être complétée par l'indexation des surfaces complémentaires des pièces intermédiaires, à savoir de l'agencement en tenon 32' et cavité 32 tous deux centrés ou excentrés. Celle-ci peut se faire par forme diverse du tenon 32' et de la cavité 32 ou par dimension diverse de 1'excentrement.The indexing described above can be supplemented by the indexing of the complementary surfaces of the intermediate parts, namely of the tenon arrangement 32 ′ and cavity 32 both centered or eccentric. This can be done by the various shape of the tenon 32 ′ and the cavity 32 or by the various dimensions of the offset.
Par ailleurs, l'agencement de verrouillage décrit ci-dessus peut être adapté également à un système de fixation par écrou à filetage borgne, la tête de l'écrou comportant alors les mêmes caractéristiques que la tête de vis 12 décrite.Furthermore, the locking arrangement described above can also be adapted to a fixing system with a blind thread nut, the nut head then having the same characteristics as the screw head 12 described.
En outre l'agencement décrit présente l'intérêt de pouvoir être réalisé sur des écrous ou vis standards par simple usinage.In addition, the arrangement described has the advantage of being able to be produced on standard nuts or screws by simple machining.
Le mode de fabrication des éléments décrits ci-dessus sera de préférence le suivant.The method of manufacturing the elements described above will preferably be as follows.
L'ébauche de la vis 1 avec sa cavité à denture formée par frappe à froid est passée au bain d'électrolyse. Sa pièce intermédiaire 3 est dentée, frappée à froid et passée au bain. La vis 1 et sa pièce intermédiaire 3 sont assemblées selon l'indexation prédéterminée. De la même façon la pièce d'outil 2 et sa partie intermédiaire 3' sont façonnées et assemblées selon une indexation de la même façon que la vis et sa pièce intermédiaire. The draft of the screw 1 with its toothed cavity formed by cold striking is passed to the electrolysis bath. Its intermediate part 3 is toothed, cold struck and bathed. The screw 1 and its intermediate part 3 are assembled according to the predetermined indexing. In the same way the tool part 2 and its intermediate part 3 'are shaped and assembled according to an indexing in the same way as the screw and its intermediate part.

Claims

REVENDICATIONS
1 - Agencement de verrouillage et de déverrouillage pour dispositif de fixation à vis ou écrou, la surface de prise de la pièce de fixation étant conformée par codage de façon spécifique afin de ne pouvoir être tournée pour vissage ou dévissage que par l'intermédiaire de la surface complémentaire d'une pièce d'outil propre à la pièce de fixation, agencement caractérisé en ce que les surfaces de prise complémentaires de la pièce de fixation (1) et de la pièce d'outil (2) sont formées par des pièces intermédiaires (3, 3') solidaires l'une de la surface de la pièce de fixation (1) et l'autre de la surface correspondante de la pièce d'outil (2) , ces pièces intermédiaires (3, 3') comportant des surfaces complémentaires et étant fixées aux pièces de fixation (1) et d'outil (2) par un agencement de coopération par forme, indexée et identique. 2 - Agencement selon la revendication 1, caractérisé en ce que l'agencement de coopération par forme indexée est constitué par une liaison par emboîtement centré ou excentré.1 - Locking and unlocking arrangement for a screw or nut fixing device, the grip surface of the fixing piece being shaped by specific coding so that it can only be turned for screwing or unscrewing by means of the complementary surface of a tool part specific to the fixing part, arrangement characterized in that the complementary gripping surfaces of the fixing part (1) and of the tool part (2) are formed by intermediate parts (3, 3 ') integral with one of the surface of the fixing part (1) and the other with the corresponding surface of the tool part (2), these intermediate parts (3, 3') comprising complementary surfaces and being fixed to the fixing pieces (1) and tool (2) by a cooperative arrangement by shape, indexed and identical. 2 - Arrangement according to claim 1, characterized in that the cooperation arrangement by indexed form is constituted by a central or eccentric interlocking connection.
3 - Agencement selon la revendication 2, caractérisé en ce que la liaison par emboîtement centrée ou excentrée est une liaison par denture.3 - Arrangement according to claim 2, characterized in that the connection by centered or eccentric interlocking is a connection by teeth.
4 - Agencement selon la revendication 3 , caractérisé en ce que chaque denture est constituée d'une denture régulière, à laquelle a été supprimée une dent.4 - Arrangement according to claim 3, characterized in that each toothing consists of a regular toothing, from which a tooth has been removed.
5 - Agencement selon la revendication 1, caractérisé en ce que les surfaces complémentaires des pièces intermédiaires (3, 3') sont indexées par leur forme. 6 - Agencement selon la revendication 1, caractérisé en ce que les surfaces complémentaires des pièces intermédiaires (3, 3') sont indexées par leur position.5 - Arrangement according to claim 1, characterized in that the complementary surfaces of the intermediate parts (3, 3 ') are indexed by their shape. 6 - Arrangement according to claim 1, characterized in that the complementary surfaces of intermediate parts (3, 3 ') are indexed by their position.
7 - Agencement selon la revendication 1, 5 ou 6, caractérisé en ce que les surfaces complémentaires des pièces intermédiaires (3, 3') sont constituées par une liaison par emboîtement.7 - Arrangement according to claim 1, 5 or 6, characterized in that the complementary surfaces of the intermediate parts (3, 3 ') are constituted by a nesting connection.
8 - Agencement selon la revendication 7, caractérisé en ce que ladite liaison par emboîtement est constituée d'un trou borgne centré ou excentré et d'un picot centré ou excentré.8 - Arrangement according to claim 7, characterized in that said interlocking connection consists of a centered or eccentric blind hole and a centered or eccentric pin.
9) Ensemble d'éléments antivol pour la fixation d'une roue de véhicule, comprenant une pièce de fixation destinée à la liaison de la jante de la roue sur son disque et une pièce d'outil destinée à être intercalée entre une clé de manivelle, ou équivalent, et la pièce de fixation, afin de serrer ou desserrer celle-ci comportant un agencement selon l'une quelconque des revendications précédentes.9) Set of anti-theft elements for fixing a vehicle wheel, comprising a fixing part intended for the connection of the rim of the wheel on its disc and a tool part intended to be interposed between a crank key , or equivalent, and the fixing part, in order to tighten or loosen the latter comprising an arrangement according to any one of the preceding claims.
10 - Ensemble d'éléments selon la revendication 9, caractérisé en ce que le corps (22) de la pièce d'outil (2) est prolongé par une partie cylindrique creuse (24) sur la face comportant la cavité dentée (23) .10 - set of elements according to claim 9, characterized in that the body (22) of the tool part (2) is extended by a hollow cylindrical part (24) on the face comprising the toothed cavity (23).
11 - Ensemble d'éléments selon la revendication 9 ou 10, caractérisé en ce que le corps11 - set of elements according to claim 9 or 10, characterized in that the body
(22) de la pièce d'outil comporte sur sa face opposée à celle de la surface de prise, au moins une surface de prise hexagonale standard (21) . (22) of the tool part has on its face opposite that of the gripping surface, at least one standard hexagonal gripping surface (21).
PCT/FR1991/000107 1990-02-13 1991-02-12 Locking and unlocking arrangement for a screw or nut device, particularly a theft prevention screw or nut on a vehicle wheel WO1991012438A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9001661A FR2658253B1 (en) 1990-02-13 1990-02-13 LOCKING AND UNLOCKING ARRANGEMENT FOR A SCREW OR NUT DEVICE, PARTICULARLY FOR A SCREW OR ANTITHEFT NUT FOR VEHICLE WHEEL.
FR90/01661 1990-02-13

Publications (1)

Publication Number Publication Date
WO1991012438A1 true WO1991012438A1 (en) 1991-08-22

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PCT/FR1991/000107 WO1991012438A1 (en) 1990-02-13 1991-02-12 Locking and unlocking arrangement for a screw or nut device, particularly a theft prevention screw or nut on a vehicle wheel

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FR (1) FR2658253B1 (en)
WO (1) WO1991012438A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19902192B4 (en) * 1999-01-21 2007-07-05 Adl S.A. Anti-theft screw part
PL3368781T3 (en) 2015-10-30 2020-02-28 Abc Umformtechnik Gmbh & Co. Kg Anti-theft screw part for attaching a wheel rim to a motor vehicle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0070247A2 (en) * 1981-07-15 1983-01-19 FRANCAISE D'ACCESSOIRES AUTOMOBILES F2A Société Anonyme Universal anti-theft device, especially for nuts and bolts to fix car-wheels
US4473169A (en) * 1982-02-22 1984-09-25 Fitzgerald Fitz E Anti-theft plug and fastener

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0070247A2 (en) * 1981-07-15 1983-01-19 FRANCAISE D'ACCESSOIRES AUTOMOBILES F2A Société Anonyme Universal anti-theft device, especially for nuts and bolts to fix car-wheels
US4473169A (en) * 1982-02-22 1984-09-25 Fitzgerald Fitz E Anti-theft plug and fastener

Also Published As

Publication number Publication date
FR2658253A1 (en) 1991-08-16
FR2658253B1 (en) 1992-04-24

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