EP2283193B1 - Wire reinforcement for a plastic cylinder lock casing and manufacturing method - Google Patents
Wire reinforcement for a plastic cylinder lock casing and manufacturing method Download PDFInfo
- Publication number
- EP2283193B1 EP2283193B1 EP09741782.8A EP09741782A EP2283193B1 EP 2283193 B1 EP2283193 B1 EP 2283193B1 EP 09741782 A EP09741782 A EP 09741782A EP 2283193 B1 EP2283193 B1 EP 2283193B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- cylinder casing
- plastic
- tumbler
- cylinder housing
- 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.)
- Not-in-force
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Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B9/00—Lock casings or latch-mechanism casings ; Fastening locks or fasteners or parts thereof to the wing
- E05B9/04—Casings of cylinder locks
- E05B9/048—Stator reinforcements
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B29/00—Cylinder locks and other locks with plate tumblers which are set by pushing the key in
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
- E05B15/16—Use of special materials for parts of locks
- E05B15/1635—Use of special materials for parts of locks of plastics materials
- E05B2015/1664—Use of special materials for parts of locks of plastics materials for lock housing
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B45/00—Alarm locks
- E05B45/06—Electric alarm locks
- E05B45/08—Electric alarm locks with contact making inside the lock or in the striking plate
- E05B45/10—Electric alarm locks with contact making inside the lock or in the striking plate by introducing the key or another object
Definitions
- the invention relates to a lock cylinder component for a motor vehicle.
- the invention relates to a cylinder housing or a cylinder guide for a lock cylinder of a motor vehicle.
- the cylinder housing has an opening arranged in the longitudinal direction of the cylinder housing into which a cylinder core with at least one tumbler movably arranged in the cylinder core can be received in a rotatable manner.
- a tumbler receptacle is formed, in which the movable tumbler can at least partially submerge in order to hold the cylinder core against rotation against the cylinder housing.
- Lock cylinders for motor vehicles usually have a cylinder housing and a cylinder core.
- a lock cylinder is for example from the DE 103 13 125 A1 known.
- the cylinder core is rotatably mounted in the cylinder housing.
- tumblers are slidably and spring loaded added, which can dive differently deep into the cylinder housing depending on the action of an inserted key. If one of the tumblers dips into the cylinder housing, rotation of the cylinder core with respect to the cylinder housing is prevented. Only when a matching inserted key brings the tumblers out of engagement with the cylinder housing, so they disappear completely in the cylinder core, the rotation of the cylinder core relative to the cylinder housing is possible and unlocking the lock takes place.
- the tumblers are in engagement with the cylinder housing and lock a rotation as they dip partially in the cylinder core and partially in the fixed cylinder housing.
- corresponding recesses are formed in the cylinder housing, in which the tumblers can dip or intervene.
- cylinder housings are made of metal, so for example produced in the zinc die-casting process.
- Zinc alloys Zamac are often used which have the required mechanical properties to withstand a load which is exerted by a rotation of the locked cylinder core against the cylinder housing.
- the document DE3134471A1 describes a cylinder lock with tumblers and a housing made of fiber-reinforced plastics.
- a lock with a cylindrical rotor in a stator made of self-lubricating plastic is known.
- the rotor has a number of radially displaceable tumblers.
- GB2082664A discloses a cylinder lock having a stator made of plastic material with recesses having soft metal inserts to reduce the wear recesses.
- the FR1261278A describes a lock with a lock cylinder made of plastic and a stator for receiving the lock cylinder, wherein between these components a metallic reinforcement insert is introduced.
- US3967481A describes a lock in which spring-loaded tumblers are connected to electrical signal lines. An inserted into the lock key can move the tumblers and make switch contacts.
- the object of the invention is to enable an improved lock cylinder arrangement, in particular to provide an improved cylinder housing, which meets safety requirements and is advantageous in the manufacture and use.
- the cylinder housing is formed of a plastic and embedded in the plastic is a reinforcing insert of plastic.
- the reinforcement is formed adjacent to the tumbler receptacle and has an increased strength compared to the material of the plastic of the cylinder housing.
- the reinforcing insert is embedded in the material of the cylinder housing and placed so that it is adjacent to a bearing surface for the tumblers, which act on the tumblers upon rotation of the locked cylinder core.
- the reinforcing insert increases in one area, the mechanical strength of the cylinder housing, which is particularly stressed when a load on the lock cylinder by unauthorized operation. Dip the tumblers in the recordings in the cylinder housing and therefore lock the lock cylinder against rotation and unlocking the associated lock, the tumblers get in a violent rotation in abutment against the contact surfaces of the tumbler and exert a force on this.
- the reinforcing insert is embedded in and enclosed in the material in this region, absorbs part of the force from the tumblers and distributes the force over the entire extent of the reinforcing insert.
- the tumblers are regularly prevented from narrowing down Side impact on the cylinder housing, cut into the plastic material.
- the reinforcing insert absorbs the concentrated or concentrated force and distributes the high pressure to the extension of the reinforcement, which reduces the pressure on the plastic.
- the reinforcing insert embedded according to the second aspect of the invention is completely enclosed by the material of the cylinder housing.
- the reinforcing insert may be placed directly below the surface of the abutment surface or at a small distance from the surface inside the cylinder housing body.
- the cylinder housing is formed in this way with such a reinforcing insert, a lower strength of the material can be selected for the plastic material of the cylinder housing.
- the plastic from which the cylinder housing is formed a fiber-reinforced or ball-reinforced material.
- Fiber-reinforced materials or so-called composite materials have special material properties.
- the above-mentioned plastic series with the brand name Grivory for example, as a construction material with 30 wt.%, 40 wt.%, 50 wt.% Or 60 wt.% Glass fiber content available and processed.
- Such materials have properties that make their use for producing a cylinder housing according to the invention particularly advantageous. In particular, they are sufficiently hard and tensile to withstand the stresses Stand up, which act in a violent access to a lock cylinder and in particular the cylinder housing.
- the tensile strength of such materials is regularly according to ISO 527 in the range of 230 to 270 MPa, the hardness of such materials according to ISO 868 in the range of D 94 (Shore-D hardness).
- the reinforcing insert is formed of an electrically conductive material.
- the reinforcing insert may be formed of an electrically conductive material. This opens up new possibilities of functionality of the lock cylinder or the cylinder housing in particular.
- a conductive material as a reinforcing insert can be used for example as a sensor to detect violent access attempts.
- the reinforcing insert can be contacted in order to apply or interrogate an electrical signal, wherein a device for evaluating the signal is provided.
- a voltage signal can be applied, for example, to the conductive insert. If a violent access, so the electrically conductive insert is either contacted by the likewise metallic tumblers or can be damaged or severed by these. This can be detected by evaluating an electrical signal or monitoring the electrical signals on the conductive insert in the cylinder housing. A violent actuation of the door lock can be detected and access to the other vehicle functions can be prevented.
- This functionality is only possible thanks to the inventive design of the lock cylinder, as a material for the cylinder housing a non-conductive plastic material use place. This shows that the combination of the mechanically highly stable plastic with the metallic insert offers completely new functionalities for the safety functions of a vehicle.
- a plurality of reinforcing inserts are embedded in the cylinder housing.
- reinforcing inserts are included in the material of the cylinder housing, they can be arranged at different positions and be formed from different materials. Cylinder cores regularly have insertion openings for the tumblers at two diametrically opposed locations in the radial direction. The tumblers can thus emerge to two opposite sides of the cylinder core and immerse in corresponding recesses in the cylinder housing. Preferably, each of these receiving openings for the tumblers on at least one reinforcing insert, which is arranged in the direction of breakage on the receptacle for the tumblers.
- These reinforcing inserts can all be formed of identical materials and in identical design or designed differently, for example one of the reinforcing inserts can at the same time assume the sensor function already mentioned above.
- a method for producing a cylinder housing for a lock cylinder of a motor vehicle is disclosed.
- a metal wire is stretched through the cavity of a tool of an injection molding machine for producing the cylinder housing, wherein the metal wire is tensioned in the axial direction of the lock cylinder to be formed.
- a plastic is injected into the tool and the metal wire is thereby enclosed and embedded in the interior of the material of the lock cylinder.
- the hardened workpiece with the embedded metal wire is ejected.
- the tension of the metal wire through the cavity of the tool prior to injection of the plastic ensures complete extension of the metal wire through the workpiece. In this way, the effect of the cylinder housing according to the invention can be achieved and it is ensured that the reinforcing insert is exposed accessible from the metal wire on both sides.
- the metal wire is unwound from a wire supply and tensioned by the cavity of the tool. Before or after the injection molding process, the metal wire is then cut to length on both sides of the workpiece. If a use of the metal wire is planned as a sensor, during or after cutting to a contacting of the metal wire done or the metal wire is cut at a predetermined distance from the cylinder housing to make contacts for a clip connection or solder joint.
- FIG. 1 a cross section through a lock cylinder 1 is shown.
- the lock cylinder housing 2 surrounds the lock cylinder core 3.
- the cylinder core 3 is rotatably received in the housing 2.
- a radially continuous recess 4 is formed, in which a tumbler 5 is slidably received.
- the tumbler 5 can be transverse to move the longitudinal axis of the cylinder core 3 and is biased by a spring 6 against a stop in the cylinder core.
- an insertion opening 11 is formed, in which a key bit can be inserted.
- An inserted key bit passes in this way through the tumblers arranged one behind the other and shifts them.
- the tumbler 5 on the insertion opening 11 on a projection 12 which can engage with a lateral groove of the key shank in engagement. Due to the formation of the groove in the key shank of a key to be inserted, the tumbler 5 is displaced against the bias 6 and can be brought out of engagement with the opening 8 or 9 with a matching key-lock cylinder combination. If the cylinder core is not properly unlocked and in the in FIG. 1 position forcibly in the unlocking direction (clockwise) moves, z. B.
- the tumbler 5 presses with the abutment edge 13 against the wall of the receptacle 9.
- the cylinder housing 2 is formed from a plastic, in which the insert reinforcement 14 extends in the axial direction.
- the reinforcing insert 14 is formed of wire and injected into the interior of the material of the cylinder housing 2 in the manufacturing process.
- the reinforcing insert 14 absorbs a force acting on the violent access or the pressure of the tumbler 5, which would otherwise possibly lead to damage or incision in the plastic material of the cylinder housing 2.
- the pressure is distributed in the axial direction of the cylinder housing 2 and a cutting of the tumblers 5 in the material of the cylinder housing 2 is prevented.
- the material of the cylinder housing 2 is therefore reinforced in the embodiment shown in the damage-critical and safety-relevant area of the contact edge 13. This makes possible the use of such plastics for safety-related lock cylinders which do not actually meet the specifications for such loads. However, the reinforcement increases the stability and load capacity especially in the critical range and the lock cylinder meets the required specifications for safety-relevant applications. The reinforcement allows an optimization of the load capacity of the cylinder housing with minimal material costs and minimal weight gain.
- FIG. 2 shows the lock cylinder FIG. 1 in an unlocked position, with a key 15 is inserted into the cylinder core 3 and in the key hole 11 of the tumbler 5 was pushed through.
- the lateral groove 16 of the key 15 interacts with the projection 12 of the tumbler 5 and moves the tumbler vertically.
- the tumbler is out of engagement with the recess 9 in the cylinder housing.
- the cylinder housing 2 is formed in the illustrated embodiment of a plastic which allows sliding of the cylinder core 3 in the interior of the cylinder housing 2 without additional lubricants. Accordingly, in the illustrated embodiment eliminates the need for greasing of the lock cylinder.
- an additional reinforcement can be arranged close to the recess 8.
- the reinforcement may be formed in a different geometry, for. B. with rectangular cross-section or in several superimposed or juxtaposed segments. It is essential that according to the invention, the advantages of the plastic material are exploited, at the same time the associated material disadvantages are repealed.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Lock And Its Accessories (AREA)
Description
Die Erfindung betrifft ein Schließzylinderbauteil für ein Kraftfahrzeug. Insbesondere betrifft die Erfindung ein Zylindergehäuse bzw. eine Zylinderführung für einen Schließzylinder eines Kraftfahrzeugs. Das Zylindergehäuse weist eine in Längsrichtung des Zylindergehäuses angeordnete Öffnung auf, in welche ein Zylinderkern mit wenigstens einer im Zylinderkern beweglich angeordneten Zuhaltung drehbar aufnehmbar ist. In dem Zylindergehäuse ist wenigstens eine Zuhaltungsaufnahme ausgebildet, in welche die bewegliche Zuhaltung wenigstens teilweise eintauchen kann, um den Zylinderkern gegen das Zylindergehäuse drehfest festzuhalten.The invention relates to a lock cylinder component for a motor vehicle. In particular, the invention relates to a cylinder housing or a cylinder guide for a lock cylinder of a motor vehicle. The cylinder housing has an opening arranged in the longitudinal direction of the cylinder housing into which a cylinder core with at least one tumbler movably arranged in the cylinder core can be received in a rotatable manner. In the cylinder housing at least one tumbler receptacle is formed, in which the movable tumbler can at least partially submerge in order to hold the cylinder core against rotation against the cylinder housing.
Schließzylinder für Kraftfahrzeuge weisen üblicherweise ein Zylindergehäuse und einen Zylinderkern auf. Ein solcher Schließzylinder ist beispielsweise aus der
Gemäß dem Stand der Technik werden Zylindergehäuse aus Metall gefertigt, also beispielsweise im Zink-Druckgussverfahren hergestellt. Dabei kommen oft Zink-Legierungen (Zamac) zum Einsatz, welche die erforderlichen mechanischen Eigenschaften aufweisen, um einer Belastung standzuhalten, welche durch eine Drehung des gesperrten Zylinderkerns gegen das Zylindergehäuse ausgeübt wird.According to the prior art cylinder housings are made of metal, so for example produced in the zinc die-casting process. Zinc alloys (Zamac) are often used which have the required mechanical properties to withstand a load which is exerted by a rotation of the locked cylinder core against the cylinder housing.
Die Herstellung derartiger Zylindergehäuse ist kostenaufwändig und rohstoffintensiv.The production of such cylinder housing is costly and resource intensive.
Das Dokument
Aus der
Die
Aufgabe der Erfindung ist es, eine verbesserte Schließzylinderanordnung zu ermöglichen, insbesondere ein verbessertes Zylindergehäuse bereitzustellen, welches Sicherheitsanforderungen genügt und vorteilhaft in der Herstellung und Verwendung ist.The object of the invention is to enable an improved lock cylinder arrangement, in particular to provide an improved cylinder housing, which meets safety requirements and is advantageous in the manufacture and use.
Diese Aufgabe wird erfindungsgemäß gelöst durch ein Zylindergehäuse mit den Merkmalen des Patentanspruchs 1 sowie ein Verfahren zur Herstellung eines Zylindergehäuses mit den Merkmalen des Patentanspruchs 7.This object is achieved by a cylinder housing with the features of
Gemäß der Erfindung ist das Zylindergehäuse aus einem Kunststoff gebildet und in dem Kunststoff ist eine Verstärkungseinlage von Kunststoff umschlossen eingebettet. Die Verstärkung ist benachbart zu der Zuhaltungsaufnahme ausgebildet und weist gegenüber dem Material des Kunststoffs des Zylindergehäuses eine erhöhte Festigkeit auf. Die Verstärkungseinlage ist so in dem Material des Zylindergehäuses eingebettet und platziert, dass sie an eine Anlagefläche für die Zuhaltungen angrenzt, auf welche die Zuhaltungen bei einer Drehung des gesperrten Zylinderkerns einwirken.According to the invention, the cylinder housing is formed of a plastic and embedded in the plastic is a reinforcing insert of plastic. The reinforcement is formed adjacent to the tumbler receptacle and has an increased strength compared to the material of the plastic of the cylinder housing. The reinforcing insert is embedded in the material of the cylinder housing and placed so that it is adjacent to a bearing surface for the tumblers, which act on the tumblers upon rotation of the locked cylinder core.
Die Verstärkungseinlage erhöht in einem Bereich die mechanische Belastbarkeit des Zylindergehäuses, der bei einer Belastung des Schließzylinders durch eine unberechtigte Betätigung besonders beansprucht wird. Tauchen die Zuhaltungen in die Aufnahmen im Zylindergehäuse ein und sperren daher den Schließzylinder gegen eine Drehung und Entsperrung des zugehörigen Schlosses, so gelangen die Zuhaltungen bei einer gewaltsamen Drehung in Anlage an die Anlageflächen der Zuhaltungsaufnahme und üben eine Kraft auf diese aus. Die Verstärkungseinlage ist erfindungsgemäss in diesem Bereich in das Material eingebettet und darin umschlossen, nimmt einen Teil der Kraft von den Zuhaltungen auf und verteilt die Kraft über die gesamte Erstreckung der Verstärkungseinlage. Insbesondere wird verhindert, dass die Zuhaltungen, die regelmäßig mit einer schmalen Seite auf das Zylindergehäuse einwirken, in das Kunststoffmaterial einschneiden. Die Verstärkungseinlage nimmt nämlich die punktuell oder konzentriert einwirkende Kraft auf und verteilt den hohen Druck auf die Erstreckung der Verstärkung, wodurch der Druck auf den Kunststoff verringert wird. Die gemäß dem zweiten Aspekt der Erfindung eingebettete Verstärkungseinlage ist vollständig von dem Material des Zylindergehäuses umschlossen. Die Verstärkungseinlage kann unmittelbar unter der Oberfläche der Anlagefläche platziert sein oder in geringem Abstand zu der Oberfläche im Inneren des Zylindergehäusekörpers.The reinforcing insert increases in one area, the mechanical strength of the cylinder housing, which is particularly stressed when a load on the lock cylinder by unauthorized operation. Dip the tumblers in the recordings in the cylinder housing and therefore lock the lock cylinder against rotation and unlocking the associated lock, the tumblers get in a violent rotation in abutment against the contact surfaces of the tumbler and exert a force on this. According to the invention, the reinforcing insert is embedded in and enclosed in the material in this region, absorbs part of the force from the tumblers and distributes the force over the entire extent of the reinforcing insert. In particular, the tumblers are regularly prevented from narrowing down Side impact on the cylinder housing, cut into the plastic material. The reinforcing insert absorbs the concentrated or concentrated force and distributes the high pressure to the extension of the reinforcement, which reduces the pressure on the plastic. The reinforcing insert embedded according to the second aspect of the invention is completely enclosed by the material of the cylinder housing. The reinforcing insert may be placed directly below the surface of the abutment surface or at a small distance from the surface inside the cylinder housing body.
Wird das Zylindergehäuse auf diese Weise mit einer solchen Verstärkungseinlage ausgebildet, so kann für das Kunststoffmaterial des Zylindergehäuses eine geringere Festigkeit des Materials gewählt werden.If the cylinder housing is formed in this way with such a reinforcing insert, a lower strength of the material can be selected for the plastic material of the cylinder housing.
Üblicherweise ist es erforderlich, dass sicherheitsrelevante Türschlösser von Kraftfahrzeugen ein Drehmoment von etwa 50 Nm aufnehmen können, ohne dass eine Zerstörung des Schließzylinders erfolgt. Die Ausbildung aus einem Kunststoff mit einer eingebetteten Verstärkungseinlage gewährleistet diese Belastbarkeit im sicherheitsrelevanten Bereich.Usually, it is necessary that safety-relevant door locks of motor vehicles can absorb a torque of about 50 Nm, without destruction of the lock cylinder takes place. The training of a plastic with an embedded reinforcing insert ensures this resilience in safety-relevant area.
Vorzugsweise ist der Kunststoff, aus welchem das Zylindergehäuse gebildet ist, ein faserverstärkter oder kugelverstärkter Werkstoff.Preferably, the plastic from which the cylinder housing is formed, a fiber-reinforced or ball-reinforced material.
Faserverstärkte Werkstoffe oder auch sogenannte Verbundmaterialien weisen besondere Werkstoffeigenschaften auf. Die oben bereits erwähnte Kunststoffreihe mit der Markenbezeichnung Grivory ist beispielsweise als Konstruktionswerkstoff mit 30 Gew.%, 40 Gew.%, 50 Gew.% oder 60 Gew.% Glasfaseranteil erhältlich und zu verarbeiten. Derartige Werkstoffe weisen Eigenschaften auf, die ihre Verwendung zur Herstellung eines erfindungsgemäßen Zylindergehäuses besonders vorteilhaft machen. Insbesondere sind sie ausreichend hart und zugfest, um den Belastungen Stand zu halten, die bei einem gewaltsamen Zugriff auf einen Schließzylinder und insbesondere das Zylindergehäuse einwirken. Die Zugfestigkeit derartiger Materialien ist regelmäßig gemäß ISO 527 im Bereich von 230 bis 270 MPa, wobei die Härte solcher Materialien nach ISO 868 im Bereich von D 94 liegt (Shore-D Härte).Fiber-reinforced materials or so-called composite materials have special material properties. The above-mentioned plastic series with the brand name Grivory, for example, as a construction material with 30 wt.%, 40 wt.%, 50 wt.% Or 60 wt.% Glass fiber content available and processed. Such materials have properties that make their use for producing a cylinder housing according to the invention particularly advantageous. In particular, they are sufficiently hard and tensile to withstand the stresses Stand up, which act in a violent access to a lock cylinder and in particular the cylinder housing. The tensile strength of such materials is regularly according to ISO 527 in the range of 230 to 270 MPa, the hardness of such materials according to ISO 868 in the range of D 94 (Shore-D hardness).
Trotz dieser Eigenschaften sind diese Materialien mit Spritzgießtechniken zu verarbeiten, wobei dies deutlich einfacher möglich ist, als bei der Herstellung herkömmlicher Zylindergehäuse mit Alu-Druckgussverfahren. Vorzugsweise ist die Verstärkungseinlage aus einem elektrisch leitfähigen Material gebildet.Despite these properties, these materials are to be processed with injection molding techniques, which is much easier possible than in the production of conventional cylinder housings with aluminum die-casting. Preferably, the reinforcing insert is formed of an electrically conductive material.
Während das Zylindergehäuse aus einem Kunststoff mit geringer elektrischer Leitfähigkeit gebildet ist, kann die Verstärkungseinlage aus einem elektrisch leitfähigen Material gebildet sein. Dies eröffnet neue Möglichkeiten einer Funktionalität des Schließzylinders bzw. des Zylindergehäuses insbesondere. Ein derartiges leitfähiges Material als Verstärkungseinlage kann beispielsweise als Sensor verwendet werden, um gewaltsame Zugriffsversuche zu detektieren. Dazu ist gemäß einer Weiterbildung der Erfindung die Verstärkungseinlage kontaktierbar, um ein elektrisches Signal anzulegen oder abzufragen, wobei eine Einrichtung zur Auswertung des Signals vorgesehen ist.While the cylinder housing is formed of a plastic with low electrical conductivity, the reinforcing insert may be formed of an electrically conductive material. This opens up new possibilities of functionality of the lock cylinder or the cylinder housing in particular. Such a conductive material as a reinforcing insert can be used for example as a sensor to detect violent access attempts. For this purpose, according to a development of the invention, the reinforcing insert can be contacted in order to apply or interrogate an electrical signal, wherein a device for evaluating the signal is provided.
Solange die elektrisch leitfähige Einlage vom nichtleitfähigen Kunststoffmaterial des Zylindergehäuses umschlossen ist, kann ein Spannungssignal beispielsweise an die leitfähige Einlage angelegt werden. Erfolgt ein gewaltsamer Zugriff, so wird die elektrisch leitfähige Einlage entweder von den ebenfalls metallischen Zuhaltungen kontaktiert oder kann von diesen beschädigt oder durchtrennt werden. Dies ist durch die Auswertung eines elektrischen Signals oder eine Überwachung der elektrischen Signale an der leitfähigen Einlage in dem Zylindergehäuse detektierbar. Eine gewaltsame Betätigung des Türschlosses kann so erfasst werden und der Zugriff auf die weiteren Fahrzeugfunktionen unterbunden werden. Diese Funktionalität ist nur dank der erfindungsgemässen Gestaltung des Schliesszylinders möglich, da als Material für das Zylindergehäuse ein nicht-leitfähiges Kunststoffmaterial Verwendung findet. Damit zeigt sich, dass die Kombination des mechanisch hochstabilen Kunststoffes mit der metallischen Einlage gänzlich neue Funktionalitäten für die Sicherheitsfunktionen eines Fahrzeuges bietet.As long as the electrically conductive insert is enclosed by the non-conductive plastic material of the cylinder housing, a voltage signal can be applied, for example, to the conductive insert. If a violent access, so the electrically conductive insert is either contacted by the likewise metallic tumblers or can be damaged or severed by these. This can be detected by evaluating an electrical signal or monitoring the electrical signals on the conductive insert in the cylinder housing. A violent actuation of the door lock can be detected and access to the other vehicle functions can be prevented. This functionality is only possible thanks to the inventive design of the lock cylinder, as a material for the cylinder housing a non-conductive plastic material use place. This shows that the combination of the mechanically highly stable plastic with the metallic insert offers completely new functionalities for the safety functions of a vehicle.
In einer bevorzugten Ausführungsform der Erfindung sind mehrere Verstärkungseinlagen in das Zylindergehäuse eingebettet.In a preferred embodiment of the invention, a plurality of reinforcing inserts are embedded in the cylinder housing.
Sind mehrere Verstärkungseinlagen im Material des Zylindergehäuses eingeschlossen, können diese an verschiedenen Positionen angeordnet sein und aus verschiedenen Materialien gebildet sein. Regelmäßig weisen Zylinderkerne an zwei in radialer Richtung diametralen Orten Einschuböffnungen für die Zuhaltungen aus. Die Zuhaltungen können also zu zwei gegenüberliegenden Seiten aus dem Zylinderkern austreten und in zugehörige Ausnehmungen im Zylindergehäuse eintauchen. Vorzugsweise weist jede dieser Aufnahmeöffnungen für die Zuhaltungen wenigstens eine Verstärkungseinlage auf, die in Aufbruchsrichtung an der Aufnahme für die Zuhaltungen angeordnet ist. Diese Verstärkungseinlagen können alle aus identischen Materialien und in identischer Ausführung gebildet sein oder unterschiedlich ausgebildet sein, zum Beispiel kann eine der Verstärkungseinlagen gleichzeitig die oben bereits erwähnte Sensorfunktion übernehmen.If several reinforcing inserts are included in the material of the cylinder housing, they can be arranged at different positions and be formed from different materials. Cylinder cores regularly have insertion openings for the tumblers at two diametrically opposed locations in the radial direction. The tumblers can thus emerge to two opposite sides of the cylinder core and immerse in corresponding recesses in the cylinder housing. Preferably, each of these receiving openings for the tumblers on at least one reinforcing insert, which is arranged in the direction of breakage on the receptacle for the tumblers. These reinforcing inserts can all be formed of identical materials and in identical design or designed differently, for example one of the reinforcing inserts can at the same time assume the sensor function already mentioned above.
Gemäß einem weiteren Aspekt der Erfindung wird ein Verfahren zur Herstellung eines Zylindergehäuses für einen Schließzylinder eines Kraftfahrzeuges offenbart. Gemäß dem erfindungsgemäßen Verfahren wird zur Herstellung des Zylindergehäuses ein Metalldraht durch die Kavität eines Werkzeuges einer Spritzgießmaschine gespannt, wobei der Metalldraht in axialer Richtung des zu bildenden Schließzylinders gespannt wird. Ein Kunststoff wird in das Werkzeug eingespritzt und der Metalldraht wird dabei umschlossen und so in das Innere des Materials des Schließzylinders eingebettet. Das ausgehärtete Werkstück mit dem eingebetteten Metalldraht wird ausgeworfen. Die Spannung des Metalldrahtes durch die Kavität des Werkzeugs vor dem Einspritzen des Kunststoffs stellt eine vollständige Erstreckung des Metalldrahts durch das Werkstück sicher. Auf diese Weise kann der erfindungsgemäße Effekt des Zylindergehäuses erzielt werden und es ist sichergestellt, dass die Verstärkungseinlage aus dem Metalldraht an beiden Seiten zugreifbar freiliegt.According to a further aspect of the invention, a method for producing a cylinder housing for a lock cylinder of a motor vehicle is disclosed. According to the inventive method, a metal wire is stretched through the cavity of a tool of an injection molding machine for producing the cylinder housing, wherein the metal wire is tensioned in the axial direction of the lock cylinder to be formed. A plastic is injected into the tool and the metal wire is thereby enclosed and embedded in the interior of the material of the lock cylinder. The hardened workpiece with the embedded metal wire is ejected. The tension of the metal wire through the cavity of the tool prior to injection of the plastic ensures complete extension of the metal wire through the workpiece. In this way, the effect of the cylinder housing according to the invention can be achieved and it is ensured that the reinforcing insert is exposed accessible from the metal wire on both sides.
Vorzugsweise wird der Metalldraht von einem Drahtvorrat abgewickelt und durch die Kavität des Werkzeuges gespannt. Vor oder nach dem Spritzgießvorgang wird der Metalldraht dann beidseitig des Werkstückes abgelängt. Falls eine Verwendung des Metalldrahtes als Sensor geplant ist, kann beim oder nach dem Ablängen auch eine Kontaktierung des Metalldrahts erfolgen oder der Metalldraht wird in einem vorgegebenen Abstand vom Zylindergehäuse abgelängt, um Kontakte für eine Clip-Verbindung oder Lötverbindung stehen zu lassen.Preferably, the metal wire is unwound from a wire supply and tensioned by the cavity of the tool. Before or after the injection molding process, the metal wire is then cut to length on both sides of the workpiece. If a use of the metal wire is planned as a sensor, during or after cutting to a contacting of the metal wire done or the metal wire is cut at a predetermined distance from the cylinder housing to make contacts for a clip connection or solder joint.
Weitere vorteilhafte Ausführungsformen der Erfindung sind in den Ansprüchen angegeben.Further advantageous embodiments of the invention are specified in the claims.
Die Erfindung wird nun anhand der beiliegenden Zeichnung näher erläutert.
-
zeigt eine schematische Schnittansicht durch einen Schließzylinder mit einem Zylindergehäuse gemäß einem Ausführungsbeispiel der Erfindung.Figur 1 -
zeigt den inFigur 2 dargestellten Schließzylinder in Entriegelungsstellung und mit eingeschobenem Schlüssel.Figur 1
-
FIG. 1 shows a schematic sectional view through a lock cylinder with a cylinder housing according to an embodiment of the invention. -
FIG. 2 shows the inFIG. 1 lock cylinder shown in unlocked position and with inserted key.
In
In dem Zylindergehäuse 2 sind diametral gegenüberliegende Ausnehmungen 8 und 9 angeordnet. Bei der in
In axialer Richtung (in
In der Zuhaltung 5 ist eine Einschuböffnung 11 ausgebildet, in die ein Schlüsselbart eingeschoben werden kann. Ein eingeschobener Schlüsselbart tritt auf diese Weise durch die hintereinander angeordneten Zuhaltungen hindurch und verschiebt diese. Zum Verschieben und bereitstellen der Schließ- oder Entriegelfunktionalität weist die Zuhaltung 5 an der Einschuböffnung 11 einen Vorsprung 12 auf, der mit einer seitlichen Nut des Schlüsselschaftes in Eingriff gelangen kann. Durch die Ausbildung der Nut im Schlüsselschaft eines einzuschiebenden Schlüssels wird die Zuhaltung 5 entgegen der Vorspannung 6 verschoben werden und kann bei passender Schlüssel-Schließzylinderkombination außer Eingriff mit der Öffnung 8 oder 9 gebracht werden. Wird der Zylinderkern hingegen nicht ordnungsgemäß entriegelt und in der in
Das Material des Zylindergehäuses 2 wird daher bei der gezeigten Ausführungsform im beschädigungskritischen und sicherheitsrelevanten Bereich der Anlagekante 13 verstärkt. Dadurch wird die Verwendung von solchen Kunststoffen für sicherheitsrelevante Schließzylinder möglich, die eigentlich nicht die Spezifikationen für derartige Belastungen erfüllen. Die Verstärkung erhöht jedoch die Stabilität und Belastbarkeit gerade im kritischen Bereich und der Schließzylinder erfüllt die geforderten Spezifikationen für sicherheitsrelevante Anwendungen. Die Verstärkung ermöglicht mit minimalem Materialaufwand und minimalem Gewichtszuwachs eine Optimierung der Belastbarkeit des Zylindergehäuses.The material of the
Im Rahmen der Erfindung sind selbstverständlich weitere Abwandlungen möglich. Beispielsweise kann in dem dargestellten Ausführungsbeispiel eine zusätzliche Verstärkung nahe der Ausnehmung 8 angeordnet werden. Ferner kann die Verstärkung in anderer Geometrie ausgebildet sein, z. B. mit rechteckigem Querschnitt oder in mehreren übereinander angeordneten oder nebeneinander angeordneten Segmenten. Wesentlich ist, dass gemäß der Erfindung die Vorteile des Kunststoffwerkstoffs ausgenutzt werden, wobei gleichzeitig die damit verbundenen Materialnachteile aufgehoben werden.In the context of the invention, of course, further modifications are possible. For example, in the illustrated embodiment, an additional reinforcement can be arranged close to the
Claims (9)
- A cylinder casing (2) for a locking cylinder of a motor vehicle, with an opening arranged in longitudinal direction of the cylinder casing, in which a cylinder core (3) with at least one tumbler (5) can be rotatably accommodated, wherein the cylinder casing (2) has at least one tumbler recess (9) formed in it, into which the tumbler (5) can be partially dipped, and wherein the cylinder casing is made from a plastic, characterised in that
at least one reinforcement insert (14) is embedded enclosed in the plastic, adjacent to the tumbler recess (9), wherein the reinforcement insert (14) is formed of wire extending in axial direction of the cylinder casing and consisting of a material with a strength greater than that of the plastic,
wherein the reinforcement insert (14) is placed adjacent to a contact surface (13), which is acted upon by a tumbler (5) dipping into the tumbler recess when the locked cylinder core performs a rotation. - The cylinder casing (2) according to claim 1, wherein the plastic, from which the cylinder casing (2) is made, is a fibre-reinforced or ball-reinforced material.
- The cylinder casing (2) according to one of the preceding claims, wherein the plastic, from which the cylinder casing (2) is made, has a Shore-D hardness of more than D89.
- The cylinder casing (2) according to one of claims 1 to 3, wherein the reinforcement insert (14) is made from electrically conductive material.
- The cylinder casing (2) according to claim 4, wherein the reinforcement insert (14) can be contacted in order to apply or query an electrical signal, wherein further, a device is provided for evaluating the signal.
- The cylinder casing (2) according to one of the preceding claims, wherein a number of reinforcement inserts are embedded in the cylinder casing (2).
- A method for producing a cylinder casing for a locking cylinder of a motor vehicle, wherein
a metal wire is tensioned through the cavity of a tool of an injection moulding machine, wherein the metal wire is tensioned in axial direction of the locking cylinder,
a plastic is injected into the tool, which encases the metal wire,
the hardened workpiece is ejected. - The method according to claim 7, wherein the metal wire is unwound from a wire store and is cut to length on either side of the workpiece before or after the injection process.
- The method according to one of claims 7 or 8, wherein a number of reinforcement inserts are embedded in the cylinder barrel.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810001627 DE102008001627A1 (en) | 2008-05-07 | 2008-05-07 | Lock cylinder component for a motor vehicle |
PCT/EP2009/002044 WO2009135563A1 (en) | 2008-05-07 | 2009-03-19 | Closing cylinder component for a motor vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2283193A1 EP2283193A1 (en) | 2011-02-16 |
EP2283193B1 true EP2283193B1 (en) | 2017-02-01 |
Family
ID=40792844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09741782.8A Not-in-force EP2283193B1 (en) | 2008-05-07 | 2009-03-19 | Wire reinforcement for a plastic cylinder lock casing and manufacturing method |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2283193B1 (en) |
DE (1) | DE102008001627A1 (en) |
WO (1) | WO2009135563A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102926591A (en) * | 2010-04-27 | 2013-02-13 | 宁波宜高五金锁具有限公司 | Technology for detecting insertion of foreign body in intelligent lock cylinder |
DE102012111606A1 (en) * | 2012-11-29 | 2014-04-10 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | cylinder housing |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1261278A (en) * | 1960-04-04 | 1961-05-19 | Improvements to cylinder locks | |
US3967481A (en) * | 1974-12-30 | 1976-07-06 | Schlage Lock Company | Detector cylinder |
FR2308765A1 (en) * | 1975-04-22 | 1976-11-19 | Antivols Simplex Sa | Cylinder lock with rotor and radial pins - has housing made from self lubricating plastics with embedded metal parts |
GB2082664B (en) * | 1980-08-15 | 1984-08-15 | Ball Plastics Ltd | A lock mechanism |
DE3134471A1 (en) * | 1981-09-01 | 1983-03-17 | Ebe Elektro-Bau-Elemente Gmbh, 7022 Leinfelden-Echterdingen | Cylinder lock |
DE10313125A1 (en) | 2003-03-24 | 2004-10-14 | Huf Hülsbeck & Fürst Gmbh & Co. Kg | lock cylinder |
US7875228B2 (en) * | 2006-05-26 | 2011-01-25 | Sg Design Technologies | Apparatus, system, and method for maintaining part orientation during manufacturing |
-
2008
- 2008-05-07 DE DE200810001627 patent/DE102008001627A1/en not_active Withdrawn
-
2009
- 2009-03-19 EP EP09741782.8A patent/EP2283193B1/en not_active Not-in-force
- 2009-03-19 WO PCT/EP2009/002044 patent/WO2009135563A1/en active Application Filing
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
DE102008001627A1 (en) | 2009-11-12 |
EP2283193A1 (en) | 2011-02-16 |
WO2009135563A1 (en) | 2009-11-12 |
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