EP4357567A1 - Key for a lock cylinder - Google Patents
Key for a lock cylinder Download PDFInfo
- Publication number
- EP4357567A1 EP4357567A1 EP22202672.6A EP22202672A EP4357567A1 EP 4357567 A1 EP4357567 A1 EP 4357567A1 EP 22202672 A EP22202672 A EP 22202672A EP 4357567 A1 EP4357567 A1 EP 4357567A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- key
- section
- profile groove
- shaft
- profile
- 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.)
- Pending
Links
- 230000007704 transition Effects 0.000 claims abstract description 20
- 238000003801 milling Methods 0.000 description 4
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 210000000481 breast Anatomy 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B19/00—Keys; Accessories therefor
- E05B19/0017—Key profiles
- E05B19/0035—Key profiles characterized by longitudinal bit variations
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B19/00—Keys; Accessories therefor
- E05B19/0017—Key profiles
- E05B19/0029—Key profiles characterized by varying cross-sections of different keys within a lock system
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B19/00—Keys; Accessories therefor
- E05B19/0017—Key profiles
- E05B19/0041—Key profiles characterized by the cross-section of the key blade in a plane perpendicular to the longitudinal axis of the key
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
- E05B27/0042—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with additional key identifying function, e.g. with use of additional key operated rotor-blocking elements, not of split pin tumbler type
Definitions
- the invention relates to a key for a locking cylinder with a bow and a shaft, with at least one profile groove arranged in a side surface of the shaft and with a profile extension partially overlapping the profile groove and creating an undercut.
- Such a key is, for example, from the WO 2010/096009 A1 known.
- the profile extension extends over a space in the profile groove and thus forms the undercut.
- the undercut extends over the entire longitudinal axis of the shaft.
- This profile extension can have different geometries and can therefore be designed to lock different locking cylinders.
- the undercut makes it more difficult to copy the key.
- the EP 1 835 096 A1 A key for a locking cylinder is known in which a profile extension arranged on the side surface of the shaft is formed by a strip.
- the strip overlaps more than 50% of the profile groove and is fastened in a groove in the shaft. This is intended to help protect the key from being copied.
- the invention is based on the problem of developing a key of the type mentioned at the beginning in such a way that it is made more difficult to copy. Furthermore, the key should enable a particularly large variety of locking secrets.
- the profile groove has a first section in which the profile groove has straight or outwardly opening flanks towards the side surface and a second section adjoining the first section and having the profile extension.
- the second section is arranged on a key tip of the shaft facing away from the bow.
- This design means that a contour adapted to the profile groove is arranged very deep inside the lock cylinder in a locking channel of the lock cylinder. It is therefore not visible from outside the lock cylinder whether the undercut of the key is being scanned. This design makes copying the key very difficult.
- different lock cylinders can be present in a locking system, with one lock cylinder scanning the undercut on the key tip and another lock cylinder not. This contributes to a particularly large variety of possible locking secrets in a locking system.
- the differently designed flanks could produce disruptive edges and corners.
- Such disruptive edges and corners between the two sections can be easily avoided according to another advantageous development of the invention if the shaft has a transition section and if the transition section has a continuous course of the flanks from the first section to the second section.
- this transition section is produced by a milling tool milling the second section. The outlet of this rotating milling tool thus forms the transition section.
- a continuous change in the profile groove over a large area of the length of the shaft can be easily produced according to another advantageous development of the invention if the transition section extends over at least half of the shaft. This continuous change makes it even more difficult to copy the key because it is not visible from outside the lock cylinder where exactly the variable profile groove is scanned. In extreme cases, the transition section extends over almost the entire length of the shaft, so that the profile groove is funnel-shaped apart from the two sections at the ends of the shaft.
- an almost step-like course of the profile groove can be easily created if the length of the transition section is smaller than the lengths of the first and second sections.
- This design allows the locking channel of the locking cylinder to have a stop or a scanning device for the transition section, so that a key without a transition section or with a transition section in the wrong place cannot be inserted into the locking channel. This makes it even more difficult to copy the key and increases the possible number of locking secrets.
- FIG. 1 shows schematically a locking cylinder 1 with a key 2 inserted therein.
- the locking cylinder 1 has a core 4 which can be rotated in a housing 3 and a separate tumbler 6 which is guided laterally into the locking channel 5.
- the key 2 has a reed 7 and a shaft 8 which is inserted into the locking channel 5.
- the shaft 8 has several profile grooves 10, 11 on its side surface 9.
- the separate tumbler 6 scans one of the profile grooves 11 near a key tip 12.
- the separate tumbler 6 is shown as a representative of various tumbler options.
- the locking cylinder 1 can have several tumblers for scanning the side surface 9.
- the key 2 can have locking notches in a key breast (not shown), which are scanned by pin tumblers in the locking cylinder 1.
- Figure 2 shows enlarged key 2 from Figure 1 . It can be seen that most of the profile grooves 10 extend unchanged over the entire shaft 8.
- One of the profile grooves 11 has a first section 13 arranged near the reed 7 and a second section 14 leading to the key tip 12.
- a transition section 15 is arranged between the two sections 13, 14.
- the Figure 1 The separate locking mechanism 6 shown scans the second section 14.
- Figure 3 shows the key in a view from the key tip 12.
- the one profile groove 11 scanned by the separate tumbler 6 has a different width and a different depth over its length. The smallest width and depth is in the first section 13, while the largest width and depth is in the second section 14.
- the transition section 15 creates a continuous course of the profile groove 11 from the first to the second section 13, 14.
- Figure 3 DB denotes the change in width
- DT denotes the change in depth between the first and the second section 13, 14.
- Figure 4 shows a sectional view through key 2 from Figure 2 along the line IV - IV in the area of the first section 13.
- the profile groove 11 scanned by the separate locking device 6 has flanks 16 which slope slightly outwards towards the side surface 9.
- This section 13 has no undercut and is quite easy to manufacture with a milling tool.
- Figure 5 shows a sectional view through key 2 from Figure 2 along the line V - V in the area of the transition section 15.
- the one profile groove 11 scanned by the separate locking device 6 is opposite the Figure 4 shown first section 13 is widened and deepened.
- a profile extension 17 that extends over the profile groove 11 creates an undercut 18, which is relatively difficult to produce.
- Figure 6 shows another sectional view through key 2 from Figure 2 along the line VI - VI in the area of the second section 14.
- the one profile groove 11 scanned by the separate locking device 6 is opposite the Figure 5 shown transition section 15 is further widened and deepened.
- the undercut 18 under profile extension 17 is further enlarged compared to the transition section 15.
- the separate tumbler 6 shown can be produced, for example, as a passive profiling arranged in the core 4 of the locking cylinder 1, which blocks the insertion of a key 2 that does not have the intended profile groove 11.
- the separate tumbler 6 can also have an actively movable locking element that blocks the movement of the core 4 relative to the housing 3.
- this tumbler can also be omitted in subordinate locking cylinders 1. to enable locking with a large number of keys 2.
Landscapes
- Lock And Its Accessories (AREA)
Abstract
Bei einem Schlüssel (2) mit einem Schaft (8) und einer Reide (7) ist eine Profilnut (11) auf zwei Abschnitte (13, 14) unterteilt. Die Profilnut (11) im nahe der Reide (7) angeordneten Abschnitt (13) ist gerade und ohne Hinterschnitt gestaltet. Der der Reide (7) fern angeordnete Abschnitt (14) hat einen Hinterschnitt (18). Zwischen den beiden Abschnitten (13, 14) ist ein Übergangsabschnitt (15) für eine stetige Angleichung der unterschiedlich gestalteten Abschnitte (13, 14) angeordnet. Der Schlüssel (2) hat hierdurch einen besonders hohen Kopierschutz.In a key (2) with a shaft (8) and a bow (7), a profile groove (11) is divided into two sections (13, 14). The profile groove (11) in the section (13) arranged close to the bow (7) is straight and without an undercut. The section (14) arranged far from the bow (7) has an undercut (18). A transition section (15) is arranged between the two sections (13, 14) for a constant adjustment of the differently designed sections (13, 14). The key (2) therefore has a particularly high level of copy protection.
Description
Die Erfindung betrifft einen Schlüssel für einen Schließzylinder mit einer Reide und einem Schaft, mit zumindest einer in einer Seitenfläche des Schaftes angeordneten Profilnut und mit einem die Profilnut teilweise übergreifenden und einen Hinterschnitt erzeugenden Profilfortsatz.The invention relates to a key for a locking cylinder with a bow and a shaft, with at least one profile groove arranged in a side surface of the shaft and with a profile extension partially overlapping the profile groove and creating an undercut.
Ein solcher Schlüssel ist beispielsweise aus der
Weiterhin ist aus der
Nachteilig bei den Schlüsseln nach dem Stand der Technik ist, dass die Erschwerung des Kopierens nur begrenzt ist. Weiterhin ist der Beitrag der bekannten Schlüssel für die Anzahl von Schließgeheimnissen in einer Schließanlage begrenzt.The disadvantage of state-of-the-art keys is that they are only slightly more difficult to copy. Furthermore, the contribution of known keys to the number of locking secrets in a locking system is limited.
Der Erfindung liegt das Problem zugrunde, einen Schlüssel der eingangs genannten Art so weiterzubilden, dass dessen Kopieren weiter erschwert ist. Weiterhin soll der Schlüssel eine besonders große Vielfalt an Schließgeheimnissen ermöglichen.The invention is based on the problem of developing a key of the type mentioned at the beginning in such a way that it is made more difficult to copy. Furthermore, the key should enable a particularly large variety of locking secrets.
Dieses Problem wird erfindungsgemäß dadurch gelöst, dass
die Profilnut einen ersten Abschnitt hat, in dem die Profilnut zu der Seitenfläche gerade oder sich nach außen öffnende Flanken hat und einen sich an den ersten Abschnitt anschließenden zweiten, den Profilfortsatz aufweisenden Abschnitt hat.This problem is solved according to the invention by
the profile groove has a first section in which the profile groove has straight or outwardly opening flanks towards the side surface and a second section adjoining the first section and having the profile extension.
Zur Verbesserung des Kopierschutzes des Schlüssels trägt es gemäß einer anderen vorteilhaften Weiterbildung der Erfindung bei, wenn der zweite Abschnitt an einer der Reide abgewandten Schlüsselspitze des Schaftes angeordnet ist. Durch diese Gestaltung ist eine der Profilnut angepasste Kontur in einem Schließkanal des Schließzylinders sehr tief innerhalb des Schließzylinders angeordnet. Daher ist von außerhalb des Schließzylinders nicht sichtbar, ob der Hinterschnitt des Schlüssels abgetastet wird. Diese Gestaltung trägt zu einer großen Erschwerung des Kopierens des Schlüssels bei. In einer Schließanlage können zudem unterschiedliche Schließzylinder vorhanden sein, bei dem ein Schließzylinder den Hinterschnitt an der Schlüsselspitze abtastet und ein anderer Schließzylinder nicht. Dies trägt zu einer besonders großen Vielfalt der möglichen Schließgeheimnisse in einer Schließanlage bei.According to another advantageous development of the invention, it helps to improve the copy protection of the key if the second section is arranged on a key tip of the shaft facing away from the bow. This design means that a contour adapted to the profile groove is arranged very deep inside the lock cylinder in a locking channel of the lock cylinder. It is therefore not visible from outside the lock cylinder whether the undercut of the key is being scanned. This design makes copying the key very difficult. In addition, different lock cylinders can be present in a locking system, with one lock cylinder scanning the undercut on the key tip and another lock cylinder not. This contributes to a particularly large variety of possible locking secrets in a locking system.
In ihren aneinanderstoßenden Bereich der beiden Abschnitte könnten die unterschiedlich gestalteten Flanken störende Kanten und Ecken erzeugen. Solche störende Kanten und Ecken zwischen den beiden Abschnitten lassen sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach vermeiden, wenn der Schaft einen Übergangsabschnitt hat und wenn der Übergangsabschnitt einen stetigen Verlauf der Flanken von dem ersten Abschnitt zu dem zweiten Abschnitt aufweist. Dieser Übergangsabschnitt wird im einfachsten Fall von einem den zweiten Abschnitt fräsenden Fräswerkzeug erzeugt. Der Auslauf dieses rotierenden Fräswerkzeugs bildet hierdurch den Übergangsabschnitt.In the abutting area of the two sections, the differently designed flanks could produce disruptive edges and corners. Such disruptive edges and corners between the two sections can be easily avoided according to another advantageous development of the invention if the shaft has a transition section and if the transition section has a continuous course of the flanks from the first section to the second section. In the simplest case, this transition section is produced by a milling tool milling the second section. The outlet of this rotating milling tool thus forms the transition section.
Eine kontinuierliche Veränderung der Profilnut über einen großen Bereich der Länge des Schaftes lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach erzeugen, wenn der Übergangsabschnitt sich über zumindest die Hälfte des Schaftes erstreckt. Diese kontinuierliche Veränderung trägt zu einer weiteren Erschwerung des Kopierens des Schlüssels bei, weil von außerhalb des Schließzylinders nicht sichtbar ist, wo genau die veränderliche Profilnut abgetastet wird. Im Extremfall erstreckt sich der Übergangsabschnitt über nahezu die gesamte Länge des Schaftes, so dass die Profilnut abgesehen von den beiden Abschnitten an den Enden des Schaftes trichterförmig gestaltet ist.A continuous change in the profile groove over a large area of the length of the shaft can be easily produced according to another advantageous development of the invention if the transition section extends over at least half of the shaft. This continuous change makes it even more difficult to copy the key because it is not visible from outside the lock cylinder where exactly the variable profile groove is scanned. In extreme cases, the transition section extends over almost the entire length of the shaft, so that the profile groove is funnel-shaped apart from the two sections at the ends of the shaft.
Ein nahezu stufenartiger Verlauf der Profilnut lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach erzeugen, wenn die Länge des Übergangsabschnittes kleiner ist als die Längen des ersten und des zweiten Abschnitts. Durch diese Gestaltung kann der Schließkanal des Schließzylinders einen Anschlag oder eine Abtastung für den Übergangsabschnitt aufweisen, so dass ein Schlüssel ohne Übergangsabschnitt oder mit einem Übergangsabschnitt an der falschen Stelle nicht in den Schließkanal eingeführt werden kann. Dies trägt zur weiteren Erschwerung des Kopierens des Schlüssels und zur Erhöhung der möglichen Anzahl der Schließgeheimnisse bei.According to another advantageous development of the invention, an almost step-like course of the profile groove can be easily created if the length of the transition section is smaller than the lengths of the first and second sections. This design allows the locking channel of the locking cylinder to have a stop or a scanning device for the transition section, so that a key without a transition section or with a transition section in the wrong place cannot be inserted into the locking channel. This makes it even more difficult to copy the key and increases the possible number of locking secrets.
Zur weiteren Erschwerung des Kopierens des Schlüssels trägt es gemäß einer anderen vorteilhaften Weiterbildung der Erfindung bei, wenn die beiden Abschnitte der Profilnut eine unterschiedliche Tiefe aufweisen.According to another advantageous development of the invention, it contributes to making copying the key even more difficult if the two sections of the profile groove have a different depth.
Zur weiteren Erschwerung des Kopierens des Schlüssels trägt es gemäß einer anderen vorteilhaften Weiterbildung der Erfindung bei, wenn die beiden Abschnitte der Profilnut eine unterschiedliche Breite aufweisen.According to another advantageous development of the invention, it contributes to making copying the key even more difficult if the two sections of the profile groove have a different width.
Die Erfindung lässt zahlreiche Ausführungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips ist eine davon in der Zeichnung dargestellt und wird nachfolgend beschrieben. Diese zeigt in
- Fig.1
- einen Schließzylinder mit einem darin eingeführten Schlüssel,
- Fig.2
- vergrößert eine Seitenansicht des Schlüssels aus
,Figur 1 - Fig.3
- stark vergrößert eine Ansicht auf eine Schlüsselspitze des Schlüssels aus
,Figur 1 - Fig.4
- eine Schnittdarstellung durch den Schlüssel aus
entlang der Linie IV - IV,Figur 2 - Fig.5
- eine Schnittdarstellung durch den Schlüssel aus
entlang der Linie V - V,Figur 2 - Fig.6
- eine Schnittdarstellung durch den Schlüssel aus
entlang der Linie VI - VIFigur 2
- Fig.1
- a locking cylinder with a key inserted into it,
- Fig.2
- enlarges a side view of the key from
Figure 1 , - Fig.3
- greatly enlarged view of a key tip of the key from
Figure 1 , - Fig.4
- a cross-section through the key
Figure 2 along line IV - IV, - Fig.5
- a cross-section through the key
Figure 2 along the line V - V, - Fig.6
- a cross-section through the key
Figure 2 along line VI - VI
Zur Vereinfachung der Zeichnung ist nur die separate Zuhaltung 6 stellvertretend für verschiedene Möglichkeiten von Zuhaltungen dargestellt. Selbstverständlich kann der Schließzylinder 1 mehrere Zuhaltungen zur Abtastung der Seitenfläche 9 aufweisen. Zudem kann der Schlüssel 2 in einer Schlüsselbrust nicht dargestellte Schließkerben aufweisen, welche von Stiftzuhaltungen im Schließzylinder 1 abgetastet werden.To simplify the drawing, only the
Die in
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22202672.6A EP4357567A1 (en) | 2022-10-20 | 2022-10-20 | Key for a lock cylinder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22202672.6A EP4357567A1 (en) | 2022-10-20 | 2022-10-20 | Key for a lock cylinder |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4357567A1 true EP4357567A1 (en) | 2024-04-24 |
Family
ID=83899878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22202672.6A Pending EP4357567A1 (en) | 2022-10-20 | 2022-10-20 | Key for a lock cylinder |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP4357567A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1835096A1 (en) | 2006-03-17 | 2007-09-19 | Aug. Winkhaus GmbH & Co. KG | Key for a lock cylinder |
EP2078808A2 (en) * | 2008-01-10 | 2009-07-15 | Aug. Winkhaus GmbH & Co. KG | Key for a lock cylinder |
WO2010096009A1 (en) | 2009-02-18 | 2010-08-26 | Winloc Ag | Profiled key for cylinder locks |
WO2020001901A1 (en) * | 2018-06-28 | 2020-01-02 | Evva Sicherheitstechnologie Gmbh | Flat key for a cylinder lock, and cylinder lock |
-
2022
- 2022-10-20 EP EP22202672.6A patent/EP4357567A1/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1835096A1 (en) | 2006-03-17 | 2007-09-19 | Aug. Winkhaus GmbH & Co. KG | Key for a lock cylinder |
EP2078808A2 (en) * | 2008-01-10 | 2009-07-15 | Aug. Winkhaus GmbH & Co. KG | Key for a lock cylinder |
WO2010096009A1 (en) | 2009-02-18 | 2010-08-26 | Winloc Ag | Profiled key for cylinder locks |
WO2020001901A1 (en) * | 2018-06-28 | 2020-01-02 | Evva Sicherheitstechnologie Gmbh | Flat key for a cylinder lock, and cylinder lock |
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