EP0449177B1 - Plug - Google Patents

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Publication number
EP0449177B1
EP0449177B1 EP91104673A EP91104673A EP0449177B1 EP 0449177 B1 EP0449177 B1 EP 0449177B1 EP 91104673 A EP91104673 A EP 91104673A EP 91104673 A EP91104673 A EP 91104673A EP 0449177 B1 EP0449177 B1 EP 0449177B1
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EP
European Patent Office
Prior art keywords
pins
lock cylinder
locking
securing
pin
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 - Lifetime
Application number
EP91104673A
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German (de)
French (fr)
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EP0449177A2 (en
EP0449177A3 (en
Inventor
Joachim Beer
Norbert Kordt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aug Winkhaus GmbH and Co KG
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Aug Winkhaus GmbH and Co KG
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Publication of EP0449177A2 publication Critical patent/EP0449177A2/en
Publication of EP0449177A3 publication Critical patent/EP0449177A3/en
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Publication of EP0449177B1 publication Critical patent/EP0449177B1/en
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    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B27/00Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
    • E05B27/0042Cylinder 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
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00Keys; Accessories therefor
    • E05B19/0017Key profiles
    • E05B19/0041Key profiles characterized by the cross-section of the key blade in a plane perpendicular to the longitudinal axis of the key
    • E05B19/0052Rectangular flat keys

Definitions

  • the invention relates to a locking cylinder with a locking cylinder housing and a cylinder core rotatably held in a receiving bore of the locking cylinder housing, which contains an axially extending key channel for receiving a flat key, with a large number of pairs arranged in a row one after the other in bores of the locking cylinder housing and the locking cylinder core of spring-loaded tumbler pins, which scan the flat key, and with at least one securing element which is guided in a radially movable manner in a recess in the cylinder core and which is assigned a circumferentially extending, in particular crescent-shaped groove in the inner wall of the receiving bore, into which the securing element at least in which the flat key is removed permitting rotational position of the cylinder core engages radially spring-loaded.
  • locking cylinders of the above type which, in a circular segment-shaped, axially normal groove of the cylinder core, lead a likewise circular segment-shaped securing plate in a radially movable manner.
  • the securing plate is resiliently biased radially outward into a groove in the inner wall of the receiving bore of the lock cylinder housing which rotatably receives the cylinder core.
  • the crescent-shaped groove takes up the securing plate at least in the rotational position of the cylinder core that allows the insertion or removal of the flat key and in this way secures the cylinder core against violent pulling out of the lock cylinder housing.
  • the circular segment-shaped securing plate of the known locking cylinder if it is to be adequately anchored in the cylinder core, must extend comparatively deep into the cylinder core. This weakens the cylinder core in a plane normal to the axis between adjacent pairs of tumbler pins. If the groove receiving the securing plate extends along the flat side of the key channel receiving the flat key, as in the case of the locking cylinder of the utility model 88 13 882, the securing plate adjusts the installation space for additional springless locking pins, as described, for example, in German patents 20 03 059 and 31 23 511 are provided in the cylinder core to increase the locking security and the number of possible locking combinations.
  • German patent 25 14 920 it is also known, in a lock cylinder lockable by a cross bit key, radially extending to the key channel of the cylinder core carbide pins for drilling security to provide.
  • the hard metal pins are seated in the holes in the cylinder core and are driven radially outwards into assigned holes in the inner wall of the lock cylinder housing during the drilling attempt.
  • the hard metal pins of the known locking cylinder offer only limited protection against violent pulling out of the cylinder core, since it is not ensured that they will actually be gripped and driven out during the pulling attempt, for example by means of a screw screwed into the key channel.
  • the securing element is designed as a spring-loaded pin and is guided in a bore of the cylinder core which is angularly offset from the bores of tumbler pins.
  • a locking pin of this type weakens the cylinder core only comparatively little.
  • the locking pin can be arranged in and of itself in any angular position with respect to the tumbler pins, but is preferably arranged at an acute angle to the plane containing the pin axes of the tumbler pins, for example at an angle of approximately 45 °, so that the securing pin largely outside of the area of the key channel that is normally open to the circumference of the cylinder core. This benefits the stability of the cylinder core.
  • the area can be on the side the key channel for the inclusion of additional locking pins are kept free, as described for example in German patents 20 03 059 and 31 23 511.
  • the locking pin is held in the groove of the lock cylinder housing by the force of a preload spring.
  • the locking pin on its the groove adjacent end has a cone widening towards the groove and tapering in a cutting edge.
  • a conical cutting edge of this type pulls the locking pin in the manner of a chisel edge towards the lock cylinder housing and reliably prevents the locking pin from sliding back into its bore in the cylinder core.
  • the cutting cone can be formed by a conical head which projects beyond the shaft diameter of the securing pin. The locking pins can be produced with less effort, however, if the cone is limited by an annular groove in the locking pin, since the locking pin can then be made from rod material.
  • the end of the securing pin adjacent to the groove expediently has a spherical end face so as to hinder the rotary movement of the cylinder core as little as possible, or for one in the case of crescent-shaped grooves in which the securing pin engages depending on the rotational position of the cylinder core or is lifted out of the groove to ensure the least possible hindrance to the rotary movement.
  • the end of the locking pin facing away from the groove contains Expediently, an axial guide bore for a spring which prestresses the locking pin radially outward and which is supported at the other end on the bottom of the receiving bore of the locking pin which is designed as a blind bore. Since the spring is received in this way over part of its length by the locking pin, comparatively long springs can be used which can keep the locking pin pre-tensioned in the groove even if it is a comparatively deep groove.
  • the cylinder core contains more than one of the locking pins explained above.
  • the locking pins are expediently arranged next to one another in at least one row in the axial direction of the cylinder core, in particular with the same spacing as that of the tumbler pins arranged in a row. In order to ensure that the cylinder core is weakened as evenly as possible, the locking pins are offset against the tumbler pins in the axial direction of the cylinder core.
  • the locking pins can be provided in several rows, preferably on sides of the tumbler pin row that are opposite one another in the circumferential direction. Two such series have proven to be suitable.
  • the invention can be used in particular in a locking cylinder with additional locking pins, which scan the flat side depressions of the flat key.
  • the holes in the locking pins are angularly offset against the levels of both the tumbler pins and the additional locking pins.
  • Fig. 1 shows a lockable by a flat key 1 double lock cylinder 3, which contains in its lock cylinder housing 5 two mutually axially aligned cylinder cores 7, which are coupled in the usual way with a lock bit hub 9, which is arranged in a recess 11 of the lock cylinder housing 5.
  • the cylinder cores 7 are of the same design and are rotatably seated in a receiving bore 13 in the lock cylinder housing 5.
  • Each of the lock cylinders 7 contains radial bores 17 which are continuous to a key channel 15 and are arranged axially one behind the other in a row and which have bores 21 in a web 19 of the lock cylinder housing 5 .
  • In the bores 17, 21 sit in a conventional manner by springs 23 pairs of tumbler pins 25, 27, which on the narrow side of the flat key Scan the intended toothing and, if the locking secret matches, release the cylinder core for rotation in the locking cylinder housing 5.
  • the cylinder core 7 contains on both sides of the plane containing the pin axes of the tumbler pins 25 and thus on both sides of the key channel 15, rows of stepped bores 31 running transversely to the key channel 15, which pass through to the key channel 15 and stepped additional locking pins 33 slidably included.
  • the additional locking pins 33 have at their end facing away from the key channel 15 a spherical segment-shaped head 35, to which a dome-shaped recess 37 of the inner wall of the receiving bore 13 is assigned in the locked position of the locking cylinder (FIG. 2).
  • the additional locking pins 33 scan with their inner end recesses 39 in the flat sides of the flat key 1 and prevent rotation of the cylinder core 7 in addition to the tumbler pins 25, 27 if the locking secret does not match.
  • the additional locking pins 33 are in turn arranged axially next to one another, the additional locking pins 33 being offset from the tumbler pins 25, 27 by a gap.
  • a row of locking pins 41 is arranged on both sides of a plane containing the pin axes of the tumbler pin pairs 25, 27.
  • the locking pins 41 are seated in radial bores 43 of the cylinder core 7 with axes parallel to each other and lying in a common plane per row.
  • the locking pins 41 are made of helical compression springs 45 biased radially outward and engage with their radially outer ends in crescent-shaped grooves 47 of the inner wall of the receiving bore 13 of the lock cylinder housing 5, each assigned to the individual locking pins 41 in the locked position (FIG. 2). In the locked position of the locking cylinder 3, the locking pins 41 thus prevent the cylinder core 7 from being pulled out of the locking cylinder housing 5.
  • the springs 45 clamped between the bottom of the bore 43 designed as a blind hole on the one hand and the locking pin 41 on the other hand are seated in pocket bores 49 of the locking pins 41.
  • the pocket bores 49 increase the available travel length of the springs 45.
  • the ends of the locking pins 41 which engage in the slots 47 carry a cutting cone 51 which widens towards the slot 47 and is separated from the otherwise cylindrical locking pin 41 by a circumferential keyway 53.
  • the cutting cone 51 ensures that the locking pin 41 cannot slide back into the bore 43. It is understood that the cutting cone 51 does not have to form a sharp-edged cutting edge, it is sufficient if its conical base has a rounded end edge.
  • the radially outer end face 55 of each locking pin 41 is rounded convexly so as to prevent the locking pin 41 from entering and leaving the grooves 47 or the depressions 37 as little as possible when the cylinder core 7 rotates.
  • the two rows of locking pins 41 are in levels on both sides of the arrangement level of the tumbler pins 25 arranged, the levels of the locking pins 41 between the levels of the additional locking pins 33 on the one hand and the level of the locking pins 25 on the other hand at an angle of approximately 45 ° to the level of the tumbler pins 25.
  • the crescent-shaped grooves 47 do not overlap one another and are limited to an angular range of less than 180 °, so that they do not overlap with the dome-shaped depressions 37 in the circumferential direction.
  • the locking pins 41 are preferably made of hard metal or hardened steel or bronze.
  • the additional locking pins 33 on the one hand and the locking pins 41 on the other hand are each arranged in pairs in common planes, in such a way that the rows of the additional locking pins 33 and the locking pins 41 gap against the row of Tumbler pins 25 are offset.
  • FIGS. 4 to 6 show a variant of a double locking cylinder 3a, which differs from the locking cylinder of FIGS. 1 to 3 only in that only the rows of locking pins 41a are offset against the row of tumbler pins 25a, while the Additional locking pins 33a are arranged with respect to their pin axes in common axially normal planes with the tumbler pins 25a. Otherwise, the components of the locking cylinder 3a correspond to the components of the locking cylinder 3.
  • FIGS. 4 to 6 the reference numbers to distinguish the letter a is added.

Landscapes

  • Percussive Tools And Related Accessories (AREA)
  • Lock And Its Accessories (AREA)
  • Pens And Brushes (AREA)
  • Soil Working Implements (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Braking Arrangements (AREA)
  • Taps Or Cocks (AREA)

Abstract

To secure a cylinder core (7) of a locking cylinder (3) against being pulled out of the locking-cylinder housing (5) by force, there are proposed retaining pins (41) which are seated in bores (43) of the cylinder core (7) and which are prestressed by springs (45) into, for example, sickle-shaped grooves (47) of the receiving bore (13) of the locking-cylinder housing (5). The retaining pins (41) each have, at their end engaging into the groove (47), a knife-edge cone (51) which widens towards the groove (47) and which, during an attempt to pull the cylinder core (7) forcibly out of the locking-cylinder housing (5), prevents the retaining pin (41) from sliding back into its bore (42). Retaining pins (41) of the foregoing type require only a comparatively small amount of space in the cylinder core (7) which is consequently not needlessly weakened. Furthermore, sufficient constructional space for accommodating additional blocking pins (33) or the like remains in the cylinder core (7). <IMAGE>

Description

Die Erfindung betrifft einen Schließzylinder mit einem Schließzylindergehäuse und einem in einer Aufnahmebohrung des Schließzylindergehäuses drehbar gehaltenen Zylinderkern, welcher einen axial sich erstreckenden Schlüsselkanal zur Aufnahme eines Flachschlüssels enthält, mit einer Vielzahl in einer Reihe hintereinander in Bohrungen des Schließzylindergehäuses und des Schließzylinderkerns angeordneten, zueinander parallelen Paaren von federbelasteten, den Flachschlüssel abtastenden Zuhaltungsstiften und mit wenigstens einem in einer Aussparung des Zylinderkerns radial beweglich geführten Sicherungselement, dem in der Innenwand der Aufnahmebohrung eine in Umfangsrichtung sich erstreckende, insbesondere sichelförmige Nut zugeordnet ist, in die das Sicherungselement zumindest in der das Abziehen des Flachschlüssels erlaubenden Drehstellung des Zylinderkerns radial federbelastet eingreift.The invention relates to a locking cylinder with a locking cylinder housing and a cylinder core rotatably held in a receiving bore of the locking cylinder housing, which contains an axially extending key channel for receiving a flat key, with a large number of pairs arranged in a row one after the other in bores of the locking cylinder housing and the locking cylinder core of spring-loaded tumbler pins, which scan the flat key, and with at least one securing element which is guided in a radially movable manner in a recess in the cylinder core and which is assigned a circumferentially extending, in particular crescent-shaped groove in the inner wall of the receiving bore, into which the securing element at least in which the flat key is removed permitting rotational position of the cylinder core engages radially spring-loaded.

Aus den deutschen Gebrauchsmustern 80 02 395 und 88 13 882 sind Schließzylinder der vorstehenden Art bekannt, die in einer kreisabschnittförmigen, zum Umfang hin offenen, achsnormalen Nut des Zylinderkerns ein gleichfalls kreisabschnittförmiges Sicherungsplättchen radial beweglich führen. Das Sicherungsplättchen ist federnd nach radial außen in eine Nut der Innenwand der den Zylinderkern drehbar aufnehmenden Aufnahmebohrung des Schließzylindergehäuses hinein vorgespannt. Die beispielsweise sichelförmige Nut nimmt das Sicherungsplättchen zumindest in der das Einstecken bzw. Abziehen des Flachschlüssels erlaubenden Drehstellung des Zylinderkerns auf und sichert auf diese Weise den Zylinderkern gegen gewaltsames Ausziehen aus dem Schließzylindergehäuse.From the German utility models 80 02 395 and 88 13 882, locking cylinders of the above type are known which, in a circular segment-shaped, axially normal groove of the cylinder core, lead a likewise circular segment-shaped securing plate in a radially movable manner. The securing plate is resiliently biased radially outward into a groove in the inner wall of the receiving bore of the lock cylinder housing which rotatably receives the cylinder core. The crescent-shaped groove, for example, takes up the securing plate at least in the rotational position of the cylinder core that allows the insertion or removal of the flat key and in this way secures the cylinder core against violent pulling out of the lock cylinder housing.

Das kreisabschnittförmige Sicherungsplättchen des bekannten Schließzylinders muß sich, wenn es hinreichend in dem Zylinderkern verankert sein soll, vergleichsweise tief in den Zylinderkern hinein erstrecken. Damit wird der Zylinderkern in einer achsnormalen Ebene zwischen benachbarten Paaren von Zuhaltungsstiften stark geschwächt. Erstreckt sich die das Sicherungsplättchen aufnehmende Nut wie im Fall des Schließzylinders des Gebrauchsmusters 88 13 882 längs der Flachseite des den Flachschlüssel aufnehmenden Schlüsselkanals, so verstellt das Sicherungsplättchen den Einbauraum für zusätzliche federlose Sperrstifte, wie sie beispielsweise in den deutschen Patenten 20 03 059 und 31 23 511 in dem Zylinderkern zur Erhöhung der Sperrsicherheit und der Zahl möglicher Schließkombinationen vorgesehen sind.The circular segment-shaped securing plate of the known locking cylinder, if it is to be adequately anchored in the cylinder core, must extend comparatively deep into the cylinder core. This weakens the cylinder core in a plane normal to the axis between adjacent pairs of tumbler pins. If the groove receiving the securing plate extends along the flat side of the key channel receiving the flat key, as in the case of the locking cylinder of the utility model 88 13 882, the securing plate adjusts the installation space for additional springless locking pins, as described, for example, in German patents 20 03 059 and 31 23 511 are provided in the cylinder core to increase the locking security and the number of possible locking combinations.

Aus dem deutschen Patent 25 14 920 ist es ferner bekannt, in einem durch einen Kreuzbartschlüssel schließbaren Schließzylinder radial zum Schlüsselkanal des Zylinderkerns verlaufende Hartmetallstifte zur Aufbohrsicherung vorzusehen. Die Hartmetallstifte sitzen im Klemmsitz in Bohrungen des Zylinderkerns und werden beim Aufbohrversuch nach radial außen in zugeordnete Bohrungen der Innenwand des Schließzylindergehäuses hineingetrieben. Die Hartmetallstifte des bekannten Schließzylinders bieten nur einen begrenzten Schutz gegen gewaltsames Ausziehen des Zylinderkerns, da nicht sichergestellt ist, daß sie beim Ausziehversuch beispielsweise mittels einer in den Schlüsselkanal eingedrehten Schraube tatsächlich erfaßt und ausgetrieben werden.From the German patent 25 14 920 it is also known, in a lock cylinder lockable by a cross bit key, radially extending to the key channel of the cylinder core carbide pins for drilling security to provide. The hard metal pins are seated in the holes in the cylinder core and are driven radially outwards into assigned holes in the inner wall of the lock cylinder housing during the drilling attempt. The hard metal pins of the known locking cylinder offer only limited protection against violent pulling out of the cylinder core, since it is not ensured that they will actually be gripped and driven out during the pulling attempt, for example by means of a screw screwed into the key channel.

Es ist Aufgabe der Erfindung, einen Schließzylinder zu schaffen, dessen Zylinderkern in hohem Maß gegen Ausziehen gesichert ist, wobei hierzu vorgesehene Sicherungselemente in dem Zylinderkern nur wenig Platz beanspruchen sollen.It is an object of the invention to provide a locking cylinder, the cylinder core of which is secured to a large extent against being pulled out, with securing elements provided for this purpose being said to take up little space in the cylinder core.

Diese Aufgabe wird ausgehend von dem eingangs erläuterten Schließzylinder dadurch gelöst, daß das Sicherungselement als federbelasteter Stift ausgebildet ist und in einer zu den Bohrungen benachbarter Zuhaltungsstifte winkelversetzten Bohrung des Zylinderkerns geführt ist.This object is achieved on the basis of the locking cylinder explained at the outset in that the securing element is designed as a spring-loaded pin and is guided in a bore of the cylinder core which is angularly offset from the bores of tumbler pins.

Ein Sicherungsstift dieser Art schwächt den Zylinderkern nur vergleichsweise wenig. Der Sicherungsstift kann an und für sich in beliebiger Winkellage, bezogen auf die Zuhaltungsstifte, angeordnet sein, ist aber vorzugsweise unter einem spitzen Winkel zu der die Stiftachsen der Zuhaltungsstifte enthaltenden Ebene, beispielsweise in einem Winkel von etwa 45° angeordnet, so daß der Sicherungsstift weitgehend außerhalb des normalerweise zum Umfang des Zylinderkerns offenen Bereichs des Schlüsselkanals untergebracht ist. Dies kommt der Stabilität des Zylinderkerns zugute. Zudem kann, wie in einer bevorzugten Ausgestaltung vorgesehen ist, der Bereich seitlich des Schlüsselkanals für die Aufnahme von Zusatzsperrstiften freigehalten werden, wie sie beispielsweise in den deutschen Patenten 20 03 059 und 31 23 511 beschrieben sind.A locking pin of this type weakens the cylinder core only comparatively little. The locking pin can be arranged in and of itself in any angular position with respect to the tumbler pins, but is preferably arranged at an acute angle to the plane containing the pin axes of the tumbler pins, for example at an angle of approximately 45 °, so that the securing pin largely outside of the area of the key channel that is normally open to the circumference of the cylinder core. This benefits the stability of the cylinder core. In addition, as is provided in a preferred embodiment, the area can be on the side the key channel for the inclusion of additional locking pins are kept free, as described for example in German patents 20 03 059 and 31 23 511.

Der Sicherungsstift wird durch die Kraft einer Vorspannfeder in der Nut des Schließzylindergehäuses gehalten. Um zu verhindern, daß sich der Sicherungsstift beim Versuch, den Zylinderkern gewaltsam auszuziehen, unter Deformierung seiner Bohrung oder der Nut schräg stellt und damit unter Freigabe des Zylinderkerns in seine Bohrung zurückgleitet, ist in einer bevorzugten Ausgestaltung vorgesehen, daß der Sicherungsstift an seinem der Nut benachbarten Ende einen zur Nut hin sich erweiternden und in einer Schneide auslaufenden Konus aufweist. Eine Konusschneide dieser Art zieht den Sicherungsstift nach Art einer Meiselschneide zum Schließzylindergehäuse hin und verhindert sicher, daß der Sicherungsstift in seine Bohrung des Zylinderkerns zurückgleitet. Der Schneidenkonus kann durch einen über den Schaftdurchmesser des Sicherungsstifts überstehenden Konuskopf gebildet sein. Die Sicherungsstifte lassen sich aber mit geringerem Aufwand herstellen, wenn der Konus durch eine Ringnut des Sicherungsstifts begrenzt ist, da dann der Sicherungsstift aus Stangenmaterial hergestellt werden kann.The locking pin is held in the groove of the lock cylinder housing by the force of a preload spring. In order to prevent the locking pin from sloping when deforming its bore or the groove when trying to pull out the cylinder core and thus sliding back into its bore with the release of the cylinder core, in a preferred embodiment it is provided that the locking pin on its the groove adjacent end has a cone widening towards the groove and tapering in a cutting edge. A conical cutting edge of this type pulls the locking pin in the manner of a chisel edge towards the lock cylinder housing and reliably prevents the locking pin from sliding back into its bore in the cylinder core. The cutting cone can be formed by a conical head which projects beyond the shaft diameter of the securing pin. The locking pins can be produced with less effort, however, if the cone is limited by an annular groove in the locking pin, since the locking pin can then be made from rod material.

Zweckmäßigerweise hat das der Nut benachbarte Ende des Sicherungsstifts eine ballige Stirnseite, um so die Drehbewegung des Zylinderkerns möglichst wenig zu behindern bzw. bei sichelförmigen Nuten, in die der Sicherungsstift abhängig von der Drehstellung des Zylinderkerns eingreift bzw. aus der Nut herausgehoben ist, für eine möglichst geringe Behinderung der Drehbewegung zu sorgen.The end of the securing pin adjacent to the groove expediently has a spherical end face so as to hinder the rotary movement of the cylinder core as little as possible, or for one in the case of crescent-shaped grooves in which the securing pin engages depending on the rotational position of the cylinder core or is lifted out of the groove to ensure the least possible hindrance to the rotary movement.

Das der Nut abgewandte Ende des Sicherungsstifts enthält zweckmäßigerweise eine axiale Führungsbohrung für eine den Sicherungsstift radial nach außen vorspannende Feder, die sich anderenends am Boden der als Sackbohrung ausgebildeten Aufnahmebohrung des Sicherungsstifts abstützt. Da die Feder auf diese Weise über einen Teil ihrer Länge von dem Sicherungsstift aufgenommen ist, können vergleichsweise lange Federn benutzt werden, die den Sicherungsstift auch dann noch vorgespannt in der Nut halten können, wenn es sich um eine vergleichsweise tiefe Nut handelt.The end of the locking pin facing away from the groove contains Expediently, an axial guide bore for a spring which prestresses the locking pin radially outward and which is supported at the other end on the bottom of the receiving bore of the locking pin which is designed as a blind bore. Since the spring is received in this way over part of its length by the locking pin, comparatively long springs can be used which can keep the locking pin pre-tensioned in the groove even if it is a comparatively deep groove.

In bevorzugten Ausgestaltungen der Erfindung enthält der Zylinderkern mehr als einen der vorstehend erläuterten Sicherungsstifte. Zweckmäßigerweise sind die Sicherungsstifte in Achsrichtung des Zylinderkerns nebeneinander in wenigstens einer Reihe angeordnet, insbesondere mit dem gleichen Abstand, den auch die in einer Reihe angeordneten Zuhaltungsstifte voneinander haben. Um für eine möglichst gleichmäßige Materialschwächung des Zylinderkerns zu sorgen, sind die Sicherungsstifte in Achsrichtung des Zylinderkerns gegen die Zuhaltungsstifte auf Lücke versetzt.In preferred embodiments of the invention, the cylinder core contains more than one of the locking pins explained above. The locking pins are expediently arranged next to one another in at least one row in the axial direction of the cylinder core, in particular with the same spacing as that of the tumbler pins arranged in a row. In order to ensure that the cylinder core is weakened as evenly as possible, the locking pins are offset against the tumbler pins in the axial direction of the cylinder core.

Die Sicherungsstifte können in mehreren Reihen, vorzugsweise auf einander in Umfangsrichtung sich gegenüberliegenden Seiten der Zuhaltungsstiftreihe, vorgesehen werden. Als geeignet haben sich zwei solcher Reihen herausgestellt.The locking pins can be provided in several rows, preferably on sides of the tumbler pin row that are opposite one another in the circumferential direction. Two such series have proven to be suitable.

Die Erfindung läßt sich insbesondere bei einem Schließzylinder mit Zusatzsperrstiften einsetzen, die Flachseitenvertiefungen des Flachschlüssels abtasten. Die Bohrungen der Sperrstifte sind hierbei gegen die Ebenen sowohl der Zuhaltungsstifte als auch der Zusatzsperrstifte winkelversetzt.The invention can be used in particular in a locking cylinder with additional locking pins, which scan the flat side depressions of the flat key. The holes in the locking pins are angularly offset against the levels of both the tumbler pins and the additional locking pins.

Im folgenden wird die Erfindung anhand einer Zeichnung näher erläutert. Hierbei zeigt:

Fig. 1
eine teilweise aufgebrochene schematische Darstellung eines Doppel-Schließzylinders;
Fig. 2
eine Schnittansicht des Schließzylinders bei abgezogenem Flachschlüssels, gesehen entlang einer Linie II-II in Fig. 1;
Fig. 3
eine Schnittansicht ähnlich Fig. 2, jedoch bei eingestecktem Flachschlüssel und gegenüber seiner Sperrstellung verdrehtem Zylinderkern;
Fig. 4
eine teilweise aufgebrochene Seitenansicht einer Variante eines Doppel-Schließzylinders;
Fig. 5
eine Schnittansicht des Schließzylinders bei abgezogenem Flachschlüssel, gesehen entlang einer Linie V-V in Fig. 4 und
Fig. 6
eine Schnittansicht ähnlich Fig. 5, jedoch bei eingeführtem Flachschlüssel und gegenüber seiner Sperrstellung verdrehten Zylinderkern.
The invention is explained in more detail below with reference to a drawing. Here shows:
Fig. 1
a partially broken schematic representation of a double locking cylinder;
Fig. 2
a sectional view of the lock cylinder with the flat key removed, seen along a line II-II in Fig. 1;
Fig. 3
3 shows a sectional view similar to FIG. 2, but with the flat key inserted and the cylinder core rotated relative to its locked position;
Fig. 4
a partially broken side view of a variant of a double locking cylinder;
Fig. 5
a sectional view of the lock cylinder with the flat key removed, seen along a line VV in Fig. 4 and
Fig. 6
a sectional view similar to FIG. 5, but with the flat key inserted and the cylinder core rotated relative to its locked position.

Fig. 1 zeigt einen durch einen Flachschlüssel 1 sperrbaren Doppel-Schließzylinder 3, der in seinem Schließzylindergehäuse 5 zwei zueinander axial ausgerichtete Zylinderkerne 7 enthält, die in üblicher Weise mit einer Schließbartnabe 9 gekuppelt sind, welche in einer Aussparung 11 des Schließzylindergehäuses 5 angeordnet ist. Die Zylinderkerne 7 sind gleich gestaltet und sitzen drehbar in einer Aufnahmebohrung 13 des Schließzylindergehäuses 5. Jeder der Schließzylinder 7 enthält zu einem Schlüsselkanal 15 durchgehende, in einer Reihe axial hintereinander angeordnete, radiale Bohrungen 17, welchen in einem Steg 19 des Schließzylindergehäuses 5 Bohrungen 21 gegenüberliegen. In den Bohrungen 17, 21 sitzen in herkömmlicher Weise von Federn 23 vorgespannte Paare von Zuhaltungsstiften 25, 27, die die an der Schmalseite des Flachschlüssels 1 vorgesehene Zahnung abtasten und bei Übereinstimmung des Schließgeheimnisses den Zylinderkern zur Drehung in dem Schließzylindergehäuse 5 freigeben.Fig. 1 shows a lockable by a flat key 1 double lock cylinder 3, which contains in its lock cylinder housing 5 two mutually axially aligned cylinder cores 7, which are coupled in the usual way with a lock bit hub 9, which is arranged in a recess 11 of the lock cylinder housing 5. The cylinder cores 7 are of the same design and are rotatably seated in a receiving bore 13 in the lock cylinder housing 5. Each of the lock cylinders 7 contains radial bores 17 which are continuous to a key channel 15 and are arranged axially one behind the other in a row and which have bores 21 in a web 19 of the lock cylinder housing 5 . In the bores 17, 21 sit in a conventional manner by springs 23 pairs of tumbler pins 25, 27, which on the narrow side of the flat key Scan the intended toothing and, if the locking secret matches, release the cylinder core for rotation in the locking cylinder housing 5.

Wie am besten die Fig. 2 und 3 zeigen, enthält der Zylinderkern 7 beiderseits der die Stiftachsen der Zuhaltungsstifte 25 enthaltenden Ebene und damit beiderseits des Schlüsselkanals 15 quer zum Schlüsselkanal 15 verlaufende Reihen von Stufenbohrungen 31, die bis zum Schlüsselkanal 15 hindurchgehen und gestufte Zusatzsperrstifte 33 verschiebbar enthalten. Die Zusatzsperrstifte 33 haben an ihrem dem Schlüsselkanal 15 abgewandten Ende einen kugelabschnittförmig gerundeten Kopf 35, dem in der Sperrstellung des Schließzylinders (Fig. 2) jeweils eine kalottenförmige Vertiefung 37 der Innenwand der Aufnahmebohrung 13 zugeordnet ist. Die Zusatzsperrstifte 33 tasten mit ihrem inneren Ende Vertiefungen 39 in den Flachseiten des Flachschlüssels 1 ab und verhindern bei fehlender Übereinstimmung des Schließgeheimnisses eine Drehung des Zylinderkerns 7 zusätzlich zu den Zuhaltungsstiften 25, 27.As best shown in FIGS. 2 and 3, the cylinder core 7 contains on both sides of the plane containing the pin axes of the tumbler pins 25 and thus on both sides of the key channel 15, rows of stepped bores 31 running transversely to the key channel 15, which pass through to the key channel 15 and stepped additional locking pins 33 slidably included. The additional locking pins 33 have at their end facing away from the key channel 15 a spherical segment-shaped head 35, to which a dome-shaped recess 37 of the inner wall of the receiving bore 13 is assigned in the locked position of the locking cylinder (FIG. 2). The additional locking pins 33 scan with their inner end recesses 39 in the flat sides of the flat key 1 and prevent rotation of the cylinder core 7 in addition to the tumbler pins 25, 27 if the locking secret does not match.

Die Zusatzsperrstifte 33 sind, wie am besten Fig. 1 zeigt, wiederum in Reihen axial nebeneinander angeordnet, wobei die Zusatzsperrstifte 33 auf Lücke gegenüber den Zuhaltungsstiften 25, 27 versetzt sind.As best shown in FIG. 1, the additional locking pins 33 are in turn arranged axially next to one another, the additional locking pins 33 being offset from the tumbler pins 25, 27 by a gap.

Um gewaltsames Ausziehen des Zylinderkerns 7 aus dem Schließzylindergehäuse 5 zu verhindern, sind beiderseits einer die Stiftachsen der Zuhaltungsstiftpaare 25, 27 enthaltenden Ebene je eine Reihe von Sperrstiften 41 angeordnet. Die Sperrstifte 41 sitzen in radialen Bohrungen 43 des Zylinderkerns 7 mit zueinander parallelen und pro Reihe in jeweils einer gemeinsamen Ebene liegenden Achsen. Die Sperrstifte 41 werden von Schraubendruckfedern 45 nach radial außen vorgespannt und greifen mit ihren radial äußeren Enden in sichelförmige, den einzelnen Sperrstiften 41 jeweils gesondert zugeordnete Nuten 47 der Innenwand der Aufnahmebohrung 13 des Schließzylindergehäuses 5 in der Sperrstellung (Fig. 2) ein. Die Sperrstifte 41 verhindern damit in der Sperrstellung des Schließzylinders 3 das gewaltsame Ausziehen des Zylinderkerns 7 aus dem Schließzylindergehäuse 5.In order to prevent the cylinder core 7 from being pulled out of the lock cylinder housing 5, a row of locking pins 41 is arranged on both sides of a plane containing the pin axes of the tumbler pin pairs 25, 27. The locking pins 41 are seated in radial bores 43 of the cylinder core 7 with axes parallel to each other and lying in a common plane per row. The locking pins 41 are made of helical compression springs 45 biased radially outward and engage with their radially outer ends in crescent-shaped grooves 47 of the inner wall of the receiving bore 13 of the lock cylinder housing 5, each assigned to the individual locking pins 41 in the locked position (FIG. 2). In the locked position of the locking cylinder 3, the locking pins 41 thus prevent the cylinder core 7 from being pulled out of the locking cylinder housing 5.

Um eine vergleichsweise große radiale Tiefe der Nuten 47 zu ermöglichen, sitzen die zwischen dem Boden der als Sackloch ausgebildeten Bohrung 43 einerseits und dem Sperrstift 41 andererseits eingespannten Federn 45 in Taschenbohrungen 49 der Sperrstifte 41. Die Taschenbohrungen 49 vergrößern die verfügbare Federweglänge der Federn 45.In order to enable a comparatively large radial depth of the grooves 47, the springs 45 clamped between the bottom of the bore 43 designed as a blind hole on the one hand and the locking pin 41 on the other hand are seated in pocket bores 49 of the locking pins 41. The pocket bores 49 increase the available travel length of the springs 45.

Die in die Nuten 47 eingreifenden Enden der Sperrstifte 41 tragen einen zur Nut 47 hin sich erweiternden Schneidenkonus 51, der durch eine umlaufende Keilnut 53 aus dem im übrigen zylindrischen Sperrstift 41 abgeteilt ist. Beim Versuch, den Zylinderkern 7 gewaltsam aus dem Schließzylindergehäuse 5 auszuziehen, sorgt der Schneidenkonus 51 dafür, daß der Sicherungsstift 41 nicht in die Bohrung 43 zurückgleiten kann. Es versteht sich, daß der Schneidenkonus 51 keine scharfkantige Schneide bilden muß, es genügt, wenn seine Konusbasis eine verrundete Endkante hat. Die radial außen gelegene Stirnseite 55 jedes Sicherungsstifts 41 ist konvex verrundet, um bei einer Drehung des Zylinderkerns 7 den Ein- und Austritt des Sicherungsstifts 41 aus den Nuten 47 bzw. den Vertiefungen 37 möglichst wenig zu behindern.The ends of the locking pins 41 which engage in the slots 47 carry a cutting cone 51 which widens towards the slot 47 and is separated from the otherwise cylindrical locking pin 41 by a circumferential keyway 53. When trying to forcefully pull the cylinder core 7 out of the lock cylinder housing 5, the cutting cone 51 ensures that the locking pin 41 cannot slide back into the bore 43. It is understood that the cutting cone 51 does not have to form a sharp-edged cutting edge, it is sufficient if its conical base has a rounded end edge. The radially outer end face 55 of each locking pin 41 is rounded convexly so as to prevent the locking pin 41 from entering and leaving the grooves 47 or the depressions 37 as little as possible when the cylinder core 7 rotates.

Die beiden Reihen von Sicherungsstiften 41 sind in Ebenen beiderseits der Anordnungsebene der Zuhaltungsstifte 25 angeordnet, wobei die Ebenen der Sicherungsstifte 41 zwischen den Ebenen der Zusatzsperrstifte 33 einerseits und der Ebene der Sicherungsstifte 25 andererseits unter einem Winkel von etwa 45° zur Ebene der Zuhaltungsstifte 25 verlaufen. Die sichelförmigen Nuten 47 überlappen sich nicht gegenseitig und sind auf einen Winkelbereich von weniger als 180° begrenzt, so daß sie auch mit den kalottenförmigen Vertiefungen 37 in Umfangsrichtung nicht überlappen.The two rows of locking pins 41 are in levels on both sides of the arrangement level of the tumbler pins 25 arranged, the levels of the locking pins 41 between the levels of the additional locking pins 33 on the one hand and the level of the locking pins 25 on the other hand at an angle of approximately 45 ° to the level of the tumbler pins 25. The crescent-shaped grooves 47 do not overlap one another and are limited to an angular range of less than 180 °, so that they do not overlap with the dome-shaped depressions 37 in the circumferential direction.

Die Sicherungsstifte 41 bestehen vorzugsweise aus Hartmetall oder gehärtetem Stahl oder Bronze.The locking pins 41 are preferably made of hard metal or hardened steel or bronze.

Bei dem Ausführungsbeispiel des Doppel-Schließzylinders 3 der Fig. 1 bis 3 sind die Zusatzsperrstifte 33 einerseits und die Sicherungsstifte 41 andererseits jeweils paarweise in gemeinsamen Ebenen angeordnet und zwar so, daß die Reihen der Zusatzsperrstifte 33 und der Sicherungsstifte 41 auf Lücke gegen die Reihe der Zuhaltungsstifte 25 versetzt sind.In the embodiment of the double locking cylinder 3 of FIGS. 1 to 3, the additional locking pins 33 on the one hand and the locking pins 41 on the other hand are each arranged in pairs in common planes, in such a way that the rows of the additional locking pins 33 and the locking pins 41 gap against the row of Tumbler pins 25 are offset.

Die Fig. 4 bis 6 zeigen eine Variante eines Doppel-Schließzylinders 3a, der sich von dem Schließzylinder der Fig. 1 bis 3 lediglich dadurch unterscheidet, daß nur die Reihen der Sicherungsstifte 41a gegen die Reihe der Zuhaltungsstifte 25a auf Lücke versetzt sind, während die Zusatzsperrstifte 33a bezogen auf ihre Stiftachsen in gemeinsamen achsnormalen Ebenen mit den Zuhaltungsstiften 25a angeordnet sind. Im übrigen entsprechen die Komponenten des Schließzylinders 3a den Komponenten des Schließzylinders 3. Zur Erläuterung des Aufbaus und der Wirkungsweise wird auf die Beschreibung der Fig. 1 bis 3 Bezug genommen, wobei jedoch in den Fig. 4 bis 6 den Bezugszahlen zur Unterscheidung der Buchstabe a zugefügt ist.4 to 6 show a variant of a double locking cylinder 3a, which differs from the locking cylinder of FIGS. 1 to 3 only in that only the rows of locking pins 41a are offset against the row of tumbler pins 25a, while the Additional locking pins 33a are arranged with respect to their pin axes in common axially normal planes with the tumbler pins 25a. Otherwise, the components of the locking cylinder 3a correspond to the components of the locking cylinder 3. For an explanation of the structure and the mode of operation, reference is made to the description of FIGS. 1 to 3, but in FIGS. 4 to 6 the reference numbers to distinguish the letter a is added.

Claims (12)

  1. A lock cylinder with a lock cylinder housing (5) and, supported to rotate in a bore (13) in the lock cylinder housing (5), a cylinder core (7) containing an axially extending key passage (15) to accommodate a flat key (1), with a plurality of mutually parallel pairs of spring-loaded tumbler pins (25, 27) which scan the flat key (1) and disposed in a row one behind another in bores (17, 21) in the lock cylinder housing (5) and cylinder core (7) and with at least one securing element (41) guided for radial movement in a recess (43) in the cylinder core (7) and with which there is a groove (47) which is in particular sickle-shaped and extends in a peripheral direction in the interior wall of the receiving bore (13), said securing element (41) engaging said groove in a radially spring-loaded manner in the rotated position of the cylinder core (7) which allows the flat key (1) to be withdrawn, characterised in that the securing element is constructed as a spring-loaded pin (41) and is guided in a bore (43) in the cylinder core (7) which is angularly offset in relation to the bores (17) of adjacent tumbler pins (25).
  2. A lock cylinder according to Claim 1, characterised in that the securing pin (41) has at its end adjacent the groove (47) a cone (51) which widens out towards the groove and ends in a sharp edge.
  3. A lock cylinder according to Claim 2, characterised in that the cone (51) is bounded by an annular groove (53) on the securing pin (41).
  4. A lock cylinder according to one of Claims 1 to 3, characterised in that the end of the securing pin (41) adjacent the groove (47) has a bulbous end (55).
  5. A lock cylinder according to one of Claims 1 to 4, characterised in that the end of the securing pin (41) remote from the groove (47) contains an axial guide bore (49) for a spring (45) which pre-tensions the securing pin (41) in a radially outward direction.
  6. A lock cylinder according to one of Claims 1 to 5, characterised in that the securing pin (41) consists of hardened steel or of hard metal or bronze.
  7. A lock cylinder according to one of Claims 1 to 6, characterised in that a plurality of mutually parallel securing pins (41) are disposed beside one another in at least one row in the axial direction of the cylinder core (7).
  8. A lock cylinder according to Claim 7, characterised in that the securing pins (41) of the individual row are alternately offset in the axial direction of the cylinder core (7) in respect of the tumbler pins (25) which are likewise disposed in a row.
  9. A lock cylinder according to Claim 7 or 8, characterised in that the pin axes of the securing pins (41) of the single row are in a plane which is inclined at an acute angle, particularly of about 45°, in respect of a plane containing the pin axes of the tumbler pins (25).
  10. A lock cylinder according to one of Claims 7 to 9, characterised in that two rows of securing pins (41) are provided on peripherally opposite sides of the row (25) of tumbler pins.
  11. A lock cylinder according to Claim 10, characterised in that separate and peripherally separated sickle-shaped grooves (47) are associated with the securing pins (41) of the two rows.
  12. A lock cylinder according to one of Claims 1 to 11, characterised in that the cylinder core (7) contains in at least a plane extending cross-wise to a plane containing the pin axes of the tumbler pins (25) bores (31) in which springless auxiliary locking pins (33) are displaceably guided, having one end adapted for displacement in to the key passage (15) for scanning depressions (39) in the flat sides of the flat key (1) while their other ends are adapted for displacement in cup-shaped locking depressions (37) in the inside wall of the core-receiving bore (13) of the lock cylinder housing (5) and in that the bore or bores (43) of the locking pins (41) are angularly offset in respect of the planes of both the tumbler pins (25) and also of the auxiliary locking pins (33).
EP91104673A 1990-03-27 1991-03-25 Plug Expired - Lifetime EP0449177B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9003572U DE9003572U1 (en) 1990-03-27 1990-03-27 Lock cylinder
DE9003572U 1990-03-27

Publications (3)

Publication Number Publication Date
EP0449177A2 EP0449177A2 (en) 1991-10-02
EP0449177A3 EP0449177A3 (en) 1992-05-13
EP0449177B1 true EP0449177B1 (en) 1994-06-01

Family

ID=6852387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91104673A Expired - Lifetime EP0449177B1 (en) 1990-03-27 1991-03-25 Plug

Country Status (4)

Country Link
EP (1) EP0449177B1 (en)
AT (1) ATE106492T1 (en)
DE (2) DE9003572U1 (en)
ES (1) ES2025536T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9003572U1 (en) * 1990-03-27 1990-05-31 Aug. Winkhaus GmbH & Co KG, 4404 Telgte Lock cylinder
DE4237565C2 (en) * 1992-11-06 1995-04-06 Winkhaus Fa August Lock cylinder and method for manufacturing the lock cylinder
CA2529716C (en) 2003-06-16 2011-03-29 Camware Holdings Pty Ltd Rotary lock and key

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1913963A (en) * 1928-11-22 1933-06-13 Chicago Lock Co Lock
DE2003059C3 (en) * 1970-01-23 1979-11-22 Fa. Aug. Winkhaus, 4404 Telgte Locking system
DE2514920C2 (en) * 1975-04-05 1982-06-16 Zeiss Ikon Ag, 7000 Stuttgart Lock cylinder with anti-drilling protection with pin tumblers
AT364612B (en) * 1979-03-01 1981-11-10 Evva Werke LOCK, PARTICULARLY CYLINDLE LOCK
DE3123511C2 (en) * 1981-06-13 1984-09-20 Aug. Winkhaus KG, 4404 Telgte TURN CYLINDER LOCK
DE8813882U1 (en) * 1988-11-05 1989-01-26 BKS GmbH, 5620 Velbert Profile locking cylinder
DE8902774U1 (en) * 1989-03-03 1989-05-24 Zeiss Ikon Ag, 7000 Stuttgart Core pull lock
DE8904898U1 (en) * 1989-04-19 1989-06-22 August Börkey Nachf. GmbH, 5820 Gevelsberg Locking cylinders, especially profile cylinders
DE9003572U1 (en) * 1990-03-27 1990-05-31 Aug. Winkhaus GmbH & Co KG, 4404 Telgte Lock cylinder

Also Published As

Publication number Publication date
ES2025536T3 (en) 1994-10-16
ATE106492T1 (en) 1994-06-15
EP0449177A2 (en) 1991-10-02
EP0449177A3 (en) 1992-05-13
DE9003572U1 (en) 1990-05-31
ES2025536T1 (en) 1992-04-01
DE59101746D1 (en) 1994-07-07

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