EP1777038B1 - Coded wrench for a theftproof rim - Google Patents

Coded wrench for a theftproof rim Download PDF

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Publication number
EP1777038B1
EP1777038B1 EP20060119114 EP06119114A EP1777038B1 EP 1777038 B1 EP1777038 B1 EP 1777038B1 EP 20060119114 EP20060119114 EP 20060119114 EP 06119114 A EP06119114 A EP 06119114A EP 1777038 B1 EP1777038 B1 EP 1777038B1
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EP
European Patent Office
Prior art keywords
coded
adjustable spanner
pins
rotating axis
set forth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP20060119114
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German (de)
French (fr)
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EP1777038A1 (en
Inventor
Daniel Lannerèe
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ADL SAS
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ADL SAS
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Publication date
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Publication of EP1777038A1 publication Critical patent/EP1777038A1/en
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Publication of EP1777038B1 publication Critical patent/EP1777038B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • 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

Definitions

  • Such a wrench is for example from the EP 133 1066 out.
  • wheel nuts or bolts which serve to secure the rim to a wheel hub of the motor vehicle, are provided with an encrypted drive region, at least one of them. So they can not be rotated with normal wrenches, in particular not be solved.
  • the coded wrench of the type mentioned is provided for another form of rim protection, namely for rims, which have a cap, which covers the wheel nuts or screws so that they are not accessible.
  • the cap is held by a coded screw on the rim.
  • the coded wrench is provided. If it is possible to loosen the coded screw, you can generally solve the wheel nuts or screws.
  • the coding of the screw ie its protection against free rotation, is the decisive part of the theft protection.
  • the invention has the object, the coded wrench of the type mentioned in such a way that it is easier and cheaper to produce, better proven in use, especially stainless and even after years There is no problem that the cap due to the wrench dirty.
  • This wrench can be produced by injection molding in one operation. Because it is made of plastic, it can not rust, it is also lighter than the wrench of the prior art.
  • the wrench according to the invention therefore has considerable advantages in practical use, in particular one does not need to protect it from rusting. There is no risk that rusted pins will affect the cover in any way.
  • the pins are changed from the prior art cylindrical pins.
  • the pins are now no longer round, but they have a substantially semi-oval cross-sectional shape. This is in particular at the junction with the base. In practical use of the wrench occur in the plane of the base surface, the highest shear forces.
  • the pins according to the invention can therefore absorb high forces.
  • the cross-sectional shape of the pins corresponds to the corresponding pockets of the associated coded screw. As a result, the contact surface of the pins is coded to the corresponding areas in the pockets Screw larger, so that local loads of the pins are lower than in the prior art. Overall, it is achieved that, despite the execution of the pins in plastic, the necessary torques, as they occur in practical operation, can be transmitted.
  • the torques to be transmitted are about 15 Nm.
  • the pins have a constant cross section over their height measured parallel to the axis of rotation. It is advantageous if the outer end line runs concentrically to a shell of the cylindrical base body, preferably slightly offset inwardly relative to this shell. Preferably, the centers of the semicircles of the at least two pins lie on a circular arc about the axis of rotation. The coding is done by different distribution of the pins.
  • the plug-in portion is made of a plastic, which is armored with at least 20%, preferably 40% with reinforcing threads, such as glass threads.
  • the rest of the wrench may be made of the same plastic but without reinforcement.
  • the entire wrench is made of the reinforced material.
  • a polyamide 66 filled with 43% by volume of glass fibers e.g. ZYTEL 70G43L used.
  • the central projection protrudes slightly further freely downwards in the direction of the axis of rotation than the pins of equal length, in particular it projects at least 1 mm further downwards.
  • the wrench has an actuating portion 20 which is formed substantially T-shaped.
  • the crossbeam of the T offers a handle with which you can grasp and operate the wrench.
  • the trunk of the T connects this handle to a cylindrical base body 22.
  • This cylindrical base body 22 is part of a plug-in area 24.
  • the cylindrical base body has a lower base area 26 which is a circular area. From her jump three pins 28, which are identical. In a known manner, they are arranged offset, the offset is the encryption.
  • a central projection 30 projects from the base surface 26. This central projection 30 is located on a rotation axis 32 of the wrench. Around this axis of rotation 32 of the wrench is rotated in practical use. It passes through the trunk of the T and the actuating portion 20.
  • the central projection 30 is substantially cylindrical, strictly speaking, it has a step which is particularly in FIG. 1 is apparent.
  • the step is at the height where the pins 28 end.
  • the central projection 30 tapers slightly and has a projection with respect to the pins 28.
  • the pins 28 project downwards in the direction of the axis of rotation 32. They have constant cross section over their height. Its cross-section is essentially in the form of a half oblong oval. More precisely, the cross-section is bounded by a semicircle 34, the center 36 of which lies on a radial 38.
  • the semicircle 34 has a vertex 40 which lies on the radial 38 and the axis of rotation 32 is closer than the remaining points of the semicircle 34.
  • the semicircle 34 has bow ends, where the semicircle stops. At each end of the arc, the semicircle is continued tangentially by a side line 44, 46, the two side lines run parallel to each other, they also extend parallel to the radial 38.
  • each pin Radially outwardly, the cross section of each pin is bounded by a termination line 48. It connects the side lines 44, 46 at their outer end points and extends concentrically to a jacket 50 of the cylindrical base body 22, it extends slightly inwardly offset to the jacket, it has almost the same diameter as the jacket 50.
  • the centers 36 of the three pins 28th are located on a circular arc 52 about the axis of rotation 32, actually the point at which the axis of rotation 32 pierces the base surface 26 and also in the corresponding, higher cross-sectional planes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Buffer Packaging (AREA)

Description

Die Erfindung bezieht sich auf einen kodierten Schraubschlüssel für eine diebstahlgesicherte Felge eines Kraftfahrzeugs, welche eine kodierte Schraube aufweist, die eine Abdeckkappe an der Felge hält, der Schraubenschlüssel für diese kodierte Schraube hat

  • einen Betätigungsbereich, der insbesondere einen Handgriff aufweist,
  • eine Drehachse und
  • einen Steckbereich, der einen zylindrischen Basiskörper hat, welcher mit dem Betätigungsbereich verbunden ist, eine Basisfläche aufweist und weiterhin mindestens zwei Stifte, die von der Basisfläche parallel zur Drehachse vorspringen, sowie einen zentralen Vorsprung hat, der gleichachsig mit der Drehachse von der Basisfläche vorspringt.
The invention relates to a coded wrench for a theft-proof rim of a motor vehicle, which has a coded screw which holds a cap on the rim, which has wrenches for this coded screw
  • an actuating region, which in particular has a handle,
  • a rotation axis and
  • a mating portion having a cylindrical base body connected to the operating portion, having a base surface and further having at least two pins protruding from the base surface parallel to the rotation axis and a central projection projecting coaxially with the rotation axis from the base surface.

Ein solcher Schraubenschlüssel geht beispielsweise aus der EP 133 1 066 hervor.Such a wrench is for example from the EP 133 1066 out.

Es ist bekannt, Felgen von Kraftfahrzeugen mit Diebstahlsicherungen zu versehen. Häufig werden Radmuttern oder -schrauben, die für die Befestigung der Felge an einer Radnabe des Kraftfahrzeugs dienen, mit verschlüsseltem Antriebsbereich versehen, zumindest eine von ihnen. So können sie mit normalen Schraubschlüsseln nicht gedreht, insbesondere nicht gelöst werden.It is known to provide rims of motor vehicles with anti-theft devices. Frequently, wheel nuts or bolts, which serve to secure the rim to a wheel hub of the motor vehicle, are provided with an encrypted drive region, at least one of them. So they can not be rotated with normal wrenches, in particular not be solved.

Der kodierte Schraubschlüssel der eingangs genannten Art ist für eine andere Form der Felgensicherung vorgesehen, nämlich für Felgen, die eine Abdeckkappe haben, welche die Radmuttern bzw. -schrauben so abdeckt, dass diese nicht zugänglich sind. Die Abdeckkappe wird durch eine kodierte Schraube an der Felge gehalten. Für das Drehen dieser Schraube ist der kodierte Schraubschlüssel vorgesehen. Gelingt es, die kodierte Schraube zu lösen, kann man im Allgemeinen auch die Radmuttern bzw. -schrauben lösen. Die Kodierung der Schraube, also ihre Sicherung gegen Freidrehen, sei der entscheidende Teil der Diebstahlsicherung.The coded wrench of the type mentioned is provided for another form of rim protection, namely for rims, which have a cap, which covers the wheel nuts or screws so that they are not accessible. The cap is held by a coded screw on the rim. For turning this screw, the coded wrench is provided. If it is possible to loosen the coded screw, you can generally solve the wheel nuts or screws. The coding of the screw, ie its protection against free rotation, is the decisive part of the theft protection.

Bei dem kodierten Schraubschlüssel nach dem Stand der Technik wird zunächst ein Vorprodukt hergestellt, das den Betätigungsbereich und den zylindrischen Basiskörper einschließlich des zentralen Vorsprungs ausbildet, aber nicht die mindestens zwei Stifte hat. In den Basiskörper werden nun parallel zur Drehachse der Anzahl der Stifte entsprechend Bohrungen eingebracht, in diese Bohrungen werden Stifte eingesetzt. Die Stifte sind zylindrisch, im Allgemeinen werden sie von einem runden Vollmaterial abgeschnitten. Diese Herstellung des Schraubschlüssels nach dem Stand der Technik ist aufwendig. Zudem hat der Schraubschlüssel nach dem Stand der Technik das Problem, dass die Stifte im Basiskörper fest verankert werden müssen, dies muss für den gesamten Temperaturbereich, der für Automobilteile vorgeschrieben ist und der sehr groß ist, sichergestellt sein. Die Stifte sind aus Metall und können rosten. Verrostete Stifte hinterlassen unschöne Spuren an der Abdeckkappe, die ein Sichtteil ist. Dabei ist zu beachten, dass der Schraubschlüssel nur relativ selten benutzt wird und allgemein oft lange Zeit im Auto verbleibt.In the coded wrench of the prior art, a precursor is first made which forms the operating portion and the cylindrical base body including the central projection but does not have the at least two pins. In the base body are now parallel to the axis of rotation of the number of pins corresponding holes introduced, in these holes pins are used. The pins are cylindrical, generally they are cut from a round solid material. This production of the wrench according to the prior art is expensive. In addition, the prior art wrench has the problem that the pins must be firmly anchored in the base body, this must be ensured for the entire temperature range prescribed for automotive parts which is very large. The pins are made of metal and can rust. Rusty pens leave unsightly marks on the cap, which is a visible part. It should be noted that the wrench is used only relatively rarely and generally often long time in the car remains.

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, den kodierten Schraubschlüssel der eingangs genannten Art dahingehend weiterzubilden, dass er einfacher und kostengünstiger herstellbar ist, sich im Gebrauch besser bewährt, insbesondere rostfrei ist und auch nach Jahren nicht das Problem besteht, dass die Abdeckkappe aufgrund des Schraubschlüssels verschmutzt.Proceeding from this, the invention has the object, the coded wrench of the type mentioned in such a way that it is easier and cheaper to produce, better proven in use, especially stainless and even after years There is no problem that the cap due to the wrench dirty.

Diese Aufgabe wird ausgehend von dem kodierten Schraubschlüssel der eingangs genannten Art dadurch gelöst, dass der Schraubschlüssel einstückig aus einem Kunststoff hergestellt ist, und dass der Querschnitt der Stifte in einer Ebene rechtwinklig zur Drehachse begrenzt ist a) von einem Halbkreis, dessen Zentrum auf einer Radialen durch die Drehachse liegt, der einen Scheitelpunkt hat, welche der Drehachse näher ist als der Rest des Halbkreises, b) von zwei Seitenlinien, die tangential an den Bogenenden des Halbkreises anschließen und parallel zu der Radialen verlaufen und c) eine äußere Abschlusslinie.This object is achieved on the basis of the coded wrench of the type mentioned above in that the wrench is made in one piece from a plastic, and that the cross section of the pins is limited in a plane perpendicular to the axis of rotation a) of a semicircle whose center is on a radial b) of two side lines tangential to the arc ends of the semicircle and parallel to the radial, and c) an outer end line.

Dieser Schraubschlüssel lässt sich in einem Arbeitsvorgang im Spritzguss herstellen. Da er aus Kunststoff gefertigt ist, kann er nicht rosten, er ist zudem leichter als der Schraubschlüssel nach dem Stand der Technik. Der erfindungsgemäße Schraubschlüssel hat daher erhebliche Vorteile im praktischen Gebrauch, insbesondere muss man ihn nicht vor einem Verrosten schützen. Es besteht nicht die Gefahr, dass durch verrostete Stifte die Abdecklappe in irgendeiner Form beeinträchtigt wird.This wrench can be produced by injection molding in one operation. Because it is made of plastic, it can not rust, it is also lighter than the wrench of the prior art. The wrench according to the invention therefore has considerable advantages in practical use, in particular one does not need to protect it from rusting. There is no risk that rusted pins will affect the cover in any way.

Die Stifte sind gegenüber den zylindrischen Stiften nach dem Stand der Technik geändert. Die Stifte sind nun nicht mehr rund, vielmehr haben sie eine im Wesentlichen halbovale Querschnittsform. Diese liegt insbesondere an der Verbindungsstelle mit der Basis vor. Beim praktischen Einsatz des Schraubschlüssels treten in der Ebene der Basisfläche die höchsten Scherkräfte auf. Dort ist nun die Verbindungsfläche der Stifte mit dem Basiskörper deutlich größer als im Stand der Technik, beispielsweise doppelt so groß. Die erfindungsgemäßen Stifte können deshalb hohe Kräfte aufnehmen. Die Querschnittsform der Stifte entspricht den entsprechenden Taschen der zugehörigen kodierten Schraube. Dadurch ist die Anlagefläche der Stifte an die entsprechenden Flächen in den Taschen der kodierten Schraube größer, so dass lokale Belastungen der Stifte geringer sind als im Stand der Technik. Insgesamt wird erreicht, dass trotz der Ausführung der Stifte in Kunststoff die notwendigen Drehmomente, wie sie im praktischen Betrieb auftreten, übertragen werden können. Die zu übertragenden Drehmomente liegen bei etwa 15 Nm.The pins are changed from the prior art cylindrical pins. The pins are now no longer round, but they have a substantially semi-oval cross-sectional shape. This is in particular at the junction with the base. In practical use of the wrench occur in the plane of the base surface, the highest shear forces. There is now the connecting surface of the pins with the base body significantly larger than in the prior art, for example, twice as large. The pins according to the invention can therefore absorb high forces. The cross-sectional shape of the pins corresponds to the corresponding pockets of the associated coded screw. As a result, the contact surface of the pins is coded to the corresponding areas in the pockets Screw larger, so that local loads of the pins are lower than in the prior art. Overall, it is achieved that, despite the execution of the pins in plastic, the necessary torques, as they occur in practical operation, can be transmitted. The torques to be transmitted are about 15 Nm.

Vorzugsweise haben die Stifte einen konstanten Querschnitt über ihre parallel zur Drehachse gemessene Höhe. Vorteilhaft ist, wenn die äußere Abschlusslinie konzentrisch zu einem Mantel des zylindrischen Basiskörpers verläuft, vorzugsweise geringfügig gegenüber diesem Mantel nach innen versetzt ist. Vorzugsweise liegen die Zentren der Halbkreise der mindestens zwei Stifte auf einem Kreisbogen um die Drehachse. Die Kodierung erfolgt durch unterschiedliche Verteilung der Stifte.Preferably, the pins have a constant cross section over their height measured parallel to the axis of rotation. It is advantageous if the outer end line runs concentrically to a shell of the cylindrical base body, preferably slightly offset inwardly relative to this shell. Preferably, the centers of the semicircles of the at least two pins lie on a circular arc about the axis of rotation. The coding is done by different distribution of the pins.

Vorzugsweise ist der Steckbereich aus einem Kunststoff gefertigt ist, der zumindest mit 20%, vorzugsweise zu 40% mit Armierungsfäden, beispielsweise Glasfäden, armiert ist. Der Rest des Schraubschlüssels kann aus demselben Kunststoff, aber ohne Armierung, hergestellt sein. Vorzugsweise ist jedoch der gesamte Schraubschlüssel aus dem armierten Material hergestellt ist. Insbesondere wird ein Polyamid 66, das mit 43 Vol-% an Glasfasern gefüllt ist, z.B. ZYTEL 70G43L verwendet.Preferably, the plug-in portion is made of a plastic, which is armored with at least 20%, preferably 40% with reinforcing threads, such as glass threads. The rest of the wrench may be made of the same plastic but without reinforcement. Preferably, however, the entire wrench is made of the reinforced material. In particular, a polyamide 66 filled with 43% by volume of glass fibers, e.g. ZYTEL 70G43L used.

Vorzugsweise springt der zentrale Vorsprung geringfügig weiter frei nach unten in Richtung der Drehachse vor als die unter sich gleichlangen Stifte, insbesondere springt er zumindest 1 mm weiter nach unten vor.Preferably, the central projection protrudes slightly further freely downwards in the direction of the axis of rotation than the pins of equal length, in particular it projects at least 1 mm further downwards.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus den übrigen Ansprüchen sowie der nun folgenden Beschreibung eines nicht einschränkend zu verstehenden Ausführungsbeispiels der Erfindung, das unter Bezugnahme auf die Zeichnung im Folgenden näher erläutert wird. In dieser Zeichnung zeigen:

Fig. 1:
eine Seitenansicht des Schraubschlüssels,
Fig. 2:
einen Querschnitt entlang der Schnittlinie II-II in Figur 1,
Fig. 3:
einen Querschnitt entlang der Schnittlinie III-III in Figur 1,
Fig. 4:
ein Schnittbild entlang der Schnittlinie IV-IV in Figur 1,
Fig. 5:
eine Draufsicht von unten auf den Schraubschlüssel gemäß Fig. 1 und
Fig. 6:
eine Draufsicht auf eine kodierte Schraube.
Further advantages and features of the invention will become apparent from the other claims and the following description of a non-limiting embodiment of the invention, which is explained in more detail with reference to the drawings below. In this drawing show:
Fig. 1:
a side view of the wrench,
Fig. 2:
a cross section along the section line II-II in FIG. 1 .
3:
a cross section along the section line III-III in FIG. 1 .
4:
a sectional view along the section line IV-IV in FIG. 1 .
Fig. 5:
a plan view from below of the wrench according to Fig. 1 and
Fig. 6:
a plan view of a coded screw.

Wie aus den Figuren zu ersehen ist, hat der Schraubschlüssel einen Betätigungsbereich 20, der im Wesentlichen T-förmig ausgebildet ist. Der Querbalken des T bietet eine Handhabe, mit der man den Schraubschlüssel erfassen und betätigen kann. Der Stamm des T verbindet diese Handhabe mit einem zylindrischen Basiskörper 22. Dieser zylindrische Basiskörper 22 ist Teil eines Steckbereichs 24. Der zylindrische Basiskörper hat eine untere Basisfläche 26, die eine Kreisfläche ist. Von ihr springen drei Stifte 28 vor, die baugleich sind. In bekannter Weise sind sie versetzt angeordnet, im Versatz liegt die Verschlüsselung. Weiterhin springt von der Basisfläche 26 ein zentraler Vorsprung 30 vor. Dieser zentrale Vorsprung 30 liegt auf einer Drehachse 32 des Schraubschlüssels. Um diese Drehachse 32 wird der Schraubschlüssel im praktischen Einsatz gedreht. Sie verläuft durch den Stamm des T und den Betätigungsbereich 20.As can be seen from the figures, the wrench has an actuating portion 20 which is formed substantially T-shaped. The crossbeam of the T offers a handle with which you can grasp and operate the wrench. The trunk of the T connects this handle to a cylindrical base body 22. This cylindrical base body 22 is part of a plug-in area 24. The cylindrical base body has a lower base area 26 which is a circular area. From her jump three pins 28, which are identical. In a known manner, they are arranged offset, the offset is the encryption. Furthermore, a central projection 30 projects from the base surface 26. This central projection 30 is located on a rotation axis 32 of the wrench. Around this axis of rotation 32 of the wrench is rotated in practical use. It passes through the trunk of the T and the actuating portion 20.

Der zentrale Vorsprung 30 ist im Wesentlichen zylindrisch, genau genommen hat er eine Stufe, die insbesondere in Figur 1 ersichtlich ist. Die Stufe befindet sich in der Höhe, in der die Stifte 28 enden. Im Bereich der Stufe verjüngt sich der zentrale Vorsprung 30 etwas und hat einen Überstand gegenüber den Stiften 28. Beim Einsetzen des Schraubschlüssels auf eine kodierte Schraube 54, wie sie in Fig. 6 gezeigt ist, kommt zunächst der zentrale Vorsprung 30 in Kontakt mit der entsprechenden zentralen Öffnung 58 der Schraube, anschließend kann der Schraubschlüssel um die Drehachse 32 gedreht werden, bis sich die Stifte 28 in entsprechenden Taschen 56 der Schraube 54 einfinden.The central projection 30 is substantially cylindrical, strictly speaking, it has a step which is particularly in FIG. 1 is apparent. The step is at the height where the pins 28 end. In the area of the step, the central projection 30 tapers slightly and has a projection with respect to the pins 28. When inserting the wrench on a coded screw 54, as in Fig. 6 is shown, first comes the central projection 30 in contact with the corresponding central opening 58 of the screw, then the wrench can be rotated about the axis of rotation 32 until the pins 28 in corresponding pockets 56 of the screw 54 einkommen.

Die Stifte 28 springen in Richtung der Drehachse 32 nach unten vor. Sie haben konstanten Querschnitt über ihre Höhe. Ihr Querschnitt hat im Wesentlichen die Form eines halben länglichen Ovals. Präziser gesagt ist der Querschnitt begrenzt von einem Halbkreis 34, dessen Zentrum 36 auf einer Radialen 38 liegt. Der Halbkreis 34 hat einen Scheitelpunkt 40, der auf der Radialen 38 liegt und der Drehachse 32 näher ist als die restlichen Punkte des Halbkreises 34. Der Halbkreis 34 hat Bogenenden, dort hört der Halbkreis auf. An jedem Bogenende wird der Halbkreis tangential durch eine Seitenlinie 44, 46 fortgesetzt, die beiden Seitenlinien laufen parallel zueinander, sie verlaufen auch parallel zur Radialen 38. Der Halbkreis 34 und die beiden Seitenlinien 44, 46 bilden einen Teil eines erwähnten Ovals. Radial nach außen hin wird der Querschnitt jedes Stiftes durch eine Abschlusslinie 48 begrenzt. Sie verbindet die Seitenlinien 44, 46 an ihren äußeren Endpunkten und verläuft konzentrisch zu einem Mantel 50 des zylindrischen Basiskörpers 22, sie verläuft etwas geringfügig nach innen versetzt zum Mantel, sie hat nahezu denselben Durchmesser wie der Mantel 50. Die Zentren 36 der drei Stifte 28 befinden sich auf einem Kreisbogen 52 um die Drehachse 32, genau genommen um den Punkt, an dem die Drehachse 32 die Basisfläche 26 durchstößt bzw. ebenso in den entsprechenden, höher gelegenen Querschnittsebenen.The pins 28 project downwards in the direction of the axis of rotation 32. They have constant cross section over their height. Its cross-section is essentially in the form of a half oblong oval. More precisely, the cross-section is bounded by a semicircle 34, the center 36 of which lies on a radial 38. The semicircle 34 has a vertex 40 which lies on the radial 38 and the axis of rotation 32 is closer than the remaining points of the semicircle 34. The semicircle 34 has bow ends, where the semicircle stops. At each end of the arc, the semicircle is continued tangentially by a side line 44, 46, the two side lines run parallel to each other, they also extend parallel to the radial 38. The semicircle 34 and the two side lines 44, 46 form part of a said oval. Radially outwardly, the cross section of each pin is bounded by a termination line 48. It connects the side lines 44, 46 at their outer end points and extends concentrically to a jacket 50 of the cylindrical base body 22, it extends slightly inwardly offset to the jacket, it has almost the same diameter as the jacket 50. The centers 36 of the three pins 28th are located on a circular arc 52 about the axis of rotation 32, actually the point at which the axis of rotation 32 pierces the base surface 26 and also in the corresponding, higher cross-sectional planes.

Claims (9)

  1. A coded adjustable spanner for a theft-proof wheel rim of a motor vehicle which comprises a coded screw (54) retaining a protective cover on said wheel rim, said adjustable spanner for this coded screw (54) has
    - an actuation region (20) that comprises in particular a handle,
    - a rotating axis (32) and
    - a plug region (24) that has i) a cylindrical base body (22) which is connected to said actuation region (20) and comprises a base surface (26), ii) at least two pins (28), which project from said base surface (26), parallel to the rotating axis (32) and iii) a central projection (30) that protrudes from the base surface (26), coaxial with the rotating axis (32), and that is
    characterized in that said adjustable spanner is made from one piece of plastic material and that, in a plane perpendicular to the rotating axis (32), the cross section or the pins (28) is limited a) by a semi-circle (34) the center (36) of which lies on a radial (38) through the rotating axis (32) that has an apex (40) that is closer to the rotating axis (32) than the rest of the semi-circle (34), b) by two side lines (44, 46) that adjoin tangentially the arc ends (42) of the semi-circle (34) and extend parallel to the radial (38) and c) by an outer terminating line (48).
  2. The coded adjustable spanner as set forth in claim 1, characterized in that the pins (28) comprise a constant cross section over their height, which is measured parallel to the rotating axis (32).
  3. The coded adjustable spanner as set forth in claim 1, characterized in that the outer terminating line (48) extends concentrically with an outer surface area (50) of the cylindrical base body (22) and that it is preferably slightly offset inward with respect to said outer surface area (50).
  4. The coded adjustable spanner as set forth in cairn 1, characterized in that the centers (36) of the semi-circles (34) of the at least two pins (28) lie on an arc of a circle (52) about the rotating axis (32).
  5. The coded adjustable spanner as set forth in claim 1, characterized in that the plug region (24) is made from a plastic material that is reinforced at least 20 %, preferably at least 40 %, with reinforcement threads, such as glass threads, and that the entire adjustable spanner is preferably made from this material.
  6. The coded adjustable spanner as set forth in claim 1, characterized in that the central projection (30) projects freely downward in the direction of the rotating axis (32) slightly further, more specifically at least 1 mm further, than the pins (28), which are all of the same length.
  7. The coded adjustable spanner as set forth in claim 1, characterized in that the plastic material is a polyamide.
  8. The coded adjustable spanner as set forth in claim 1., characterized in that the length of the pin (28), which is measured in the direction of the radial (38), is greater than the diameter of the semi-circle (34), more specifically at least 25 % greater.
  9. The coded adjustable spanner as set forth in claim 1, characterized in that the diameter of the semi-circle (34) is about 20 % the diameter of the outer surface area (50) of the cylindrical base body (26).
EP20060119114 2005-10-21 2006-08-17 Coded wrench for a theftproof rim Expired - Fee Related EP1777038B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200520016637 DE202005016637U1 (en) 2005-10-21 2005-10-21 Encoded screw or cover nut wrench for vehicle wheels to serve as an anti-theft security device is made entirely of a plastic material, with an end face which provided with appropriately shaped pins

Publications (2)

Publication Number Publication Date
EP1777038A1 EP1777038A1 (en) 2007-04-25
EP1777038B1 true EP1777038B1 (en) 2009-10-28

Family

ID=35512346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20060119114 Expired - Fee Related EP1777038B1 (en) 2005-10-21 2006-08-17 Coded wrench for a theftproof rim

Country Status (3)

Country Link
EP (1) EP1777038B1 (en)
DE (2) DE202005016637U1 (en)
ES (1) ES2335681T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006000595U1 (en) 2006-01-13 2006-06-08 Adl S.A.S., Lagny-Sur-Marne Coded wrench and associated coded screw for a theft-proof rim
CN100415451C (en) * 2006-09-25 2008-09-03 南京云帆科技实业有限公司 Spanner for mounting locking anti-theft nut unit
DE202012007659U1 (en) 2012-08-03 2012-11-06 Bks Gmbh Knaufzylinder

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1415174A (en) * 1972-08-16 1975-11-26 Ceag Ltd Key for operating a security bolt
US4569259A (en) * 1984-04-25 1986-02-11 Rubin Sol R Automobile wheel cover locking bolt and wrench combination
GB8619770D0 (en) * 1986-08-14 1986-09-24 Cooper L A Screws
FR2767215A1 (en) * 1997-08-05 1999-02-12 Roberge Philippe Raphael Andre Remote anti-theft device for stopping vehicle at large distance from owner
DE10202568A1 (en) * 2002-01-24 2003-07-31 Adl S A Key for a fastening part of an anti-theft fastening of a vehicle wheel to a wheel hub

Also Published As

Publication number Publication date
DE502006005233D1 (en) 2009-12-10
ES2335681T3 (en) 2010-03-31
EP1777038A1 (en) 2007-04-25
DE202005016637U1 (en) 2005-12-22

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