EP0023604B1 - Locking device with at least one profiled locking cylinder - Google Patents

Locking device with at least one profiled locking cylinder Download PDF

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Publication number
EP0023604B1
EP0023604B1 EP80103977A EP80103977A EP0023604B1 EP 0023604 B1 EP0023604 B1 EP 0023604B1 EP 80103977 A EP80103977 A EP 80103977A EP 80103977 A EP80103977 A EP 80103977A EP 0023604 B1 EP0023604 B1 EP 0023604B1
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EP
European Patent Office
Prior art keywords
key
core
locking device
pin
lock cylinder
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
Application number
EP80103977A
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German (de)
French (fr)
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EP0023604A1 (en
Inventor
Helga Meiners
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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Application filed by Aug Winkhaus GmbH and Co KG filed Critical Aug Winkhaus GmbH and Co KG
Priority to AT80103977T priority Critical patent/ATE12419T1/en
Publication of EP0023604A1 publication Critical patent/EP0023604A1/en
Application granted granted Critical
Publication of EP0023604B1 publication Critical patent/EP0023604B1/en
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    • 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
    • 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
    • E05B19/007—Key profiles characterized by the cross-section of the key blade in a plane perpendicular to the longitudinal axis of the key with U- or V-shaped cross-section
    • 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 locking device according to the preamble of claim 1.
  • a "rooster profile” is understood to mean profiles of the profile shape shown in FIG. 1.
  • a locking device is known from DE-A-12 533 494.
  • the longitudinal planes containing the housing pin and core pin bores of the individual rows are parallel to one another and parallel to a plane of symmetry of the locking cylinder containing the cylinder core axis of the locking cylinder.
  • the control surfaces of the flat key are produced in the copy milling process with end mills working on both sides of the flat key with a flat end face and a cutter shaft lying transversely to the flat side of the key, which mill the corresponding notches on both sides into the solidly designed key shaft. This type of production of the control surfaces is the key for the authorized first manufacturer.
  • the key notch pattern corresponds exactly to the arrangement of the tumbler pin pairs in the locking cylinder.
  • the invention has for its object to provide a locking device of the required type so that it can be manufactured more easily in the factory while maintaining considerable difficulties with unauthorized imitation of the key.
  • the combination of the features according to the characterizing part of claim 1 serves to achieve this object.
  • the production of the control surfaces of the key notches for the factory-made first manufacturer of the keys is relatively simple with appropriate mechanical equipment with relatively insensitive and long-life tools such as disc milling cutters and broaching, planing or filing tools. Nevertheless, devices of this type, in which the tools have to be adjusted in particular positions and setting angles defined by the position of the longitudinal plane, are not readily available to the mass of potential unauthorized imitators.
  • the production of the blind notches facilitates the factory production because the size of the tools and possibly their stroke are not limited by the constraint to avoid cuts in the other profile branch.
  • the keys of the locking devices according to the invention have a characteristic appearance due to the blind notches, which are separated from the actual key notches by the longitudinal recess.
  • the angle of inclination of the longitudinal planes can be made relatively large despite the housing design with Hahn profile, without that Casing pin holes cut or excessively weaken the boundary surfaces of the profile bag.
  • the size of this angle is decisive for the size of the distance between the rows of notches in the two profile branches. Keeping this distance large is desirable in view of a reduced mutual influence of controlling notches and blind notches in the respective profile branch for a given distance of the tumbler pin pairs in the direction of the axis of the locking cylinder.
  • the distance between the tumbler pin pairs in the individual longitudinal planes can therefore be kept small without the risk of interfering mutual influence of controlling notches and blind notches, which in turn is desirable in order to be able to accommodate the largest possible number of tumbler pin pairs in each longitudinal plane for a given length of the profile locking cylinder.
  • a locking cylinder is known from CH-A-260 517, in which elongated notches for controlling tumbler pin pairs are arranged in the side faces of a flat key in the axial direction of the flat key.
  • the length of the notches considerably exceeds the amount required to control the tumbler pin pairs, so that it is not possible to draw conclusions about the position of the tumbler pin pairs in the locking cylinder from the position of the notches on the key.
  • the angular dimensions specified in claim 2 take into account the wish that the housing pin bores arranged in the longitudinal planes neither cut nor excessively weaken the side walls of the profile sack.
  • the spacing of the action planes of the rows of notches is expanded while maintaining the flat key character and prevents the notches and blind notches from penetrating in a profile branch in an inadmissible manner.
  • the measure of claim 4 serves the goal of providing sufficient meat on the flat key for the formation of the control surface in the profile branches.
  • the measure of claim 5 aims to be able to provide guide and locking ribs in the areas of the key side surfaces that remain parallel in a conventional manner.
  • the measure of claim 6 serves to maintain the flat key character.
  • the measure of claim 9 is to be understood from the endeavor to be able to use as unchanged as possible rooster profiles which have only a relatively small wall thickness between the cylinder outer circumferential surface and the housing bore in their cylindrical profile part.
  • the recesses in the inner circumferential surface of the housing bore can be individual recesses, which are expediently formed by radial bores to be subsequently closed; but it is also conceivable to design the recesses for a number of additional tumbler pins as a coherent groove in the inner circumferential surface of the housing bore; Such a groove can be obtained, for example, from the housing bore by broaching.
  • the core holes for the additional tumbler pins are expediently not passed through the cylinder core axis, but instead arrange them so that they cross the cylinder core axis on the side remote from the tumbler pin pairs.
  • the measure of claim 13 is understood to be the endeavor to enable the cylinder core to rotate as freely as possible without having to oversize the core pin bores for the additional locking pins in the core and thereby excessively weaken the cylinder core. In flat key is removed then the additional mem can testifte l not fall to the guidance loss in the key channel.
  • the measure of claim 16 serves the aim of preventing the loss of guidance of the core pins of the spring-loaded tumbler pin pairs in the respective core bore by radial inward displacement.
  • the measure of claim 18 aims to further increase the security against locking.
  • the measure of claim 19 is to ensure in a simple manner that the core pins of the tumbler pin pairs when turning the Zy linderkerns at the mouths of the housing pin holes in the cylinder core bore not locking.
  • the measure of claim 20 ensures optimal sliding of the key over the radially inner ends of the core pins when inserting and pulling the key.
  • the locking devices according to the invention are particularly suitable for the production of locking systems, wherein according to claim 21 there is a multitude of possibilities to differentiate the individual locking devices.
  • Locking system is generally understood here, regardless of whether a master key is assigned to all locking cylinders or groups of them.
  • the preferred procedure is to provide holes for the additional locking pins in the cylinder core at the same locations within a group or subgroup of locking cylinders, the differentiation of individual locking cylinders within the group or Subgroup is carried out by filling these bores with additional tumbler pins differently according to location and / or number, as detailed in DE-AS 2 003 059.
  • a profile lock cylinder with a cylinder housing 10 which is designed as a cock profile.
  • the tap profile shown in Fig. 1 with the cylindrical profile part 12 and the profile bag 14 is shown to scale.
  • the cylinder housing 10 has a housing bore 16 with an inner peripheral surface 18.
  • a cylinder core 20 is rotatably inserted into the housing bore 16.
  • the cylinder core 20 has a key channel 22.
  • the shaft 24 of a flat key 26 is inserted into this key channel 22.
  • the flat key 26 is shown in detail in FIGS. 4 to 6.
  • the shaft 24 is, as can be seen from FIGS. 4 to 6, provided with longitudinal locking and guide ribs 28 and locking and guide grooves 30 extending therebetween.
  • One side surface of the shaft 24 is designated 32, the other 34.
  • the side surfaces 32 and 34 are connected to one another by edge surfaces 36 and 38.
  • the edge surfaces 36 and 38 are, as can be seen from FIGS. 5 and 6, narrower than the side surfaces 32 and 34, so that one can speak of a flat key.
  • the flat key has a region 40 near the edge, which is defined by side surface regions 32a and 34a, adjacent to the edge surface 38.
  • the width of the region 40 close to the edge corresponds to approximately 20% of the total width of the key side surfaces 32 and 34.
  • the side surface regions 32a and 34a close to the edge form an angle ex of approximately 30 ° with one another.
  • a V-shaped longitudinal recess 42 is let into the edge surface 38 of the shaft 24 between the edge surface areas 32a and 34a near the edge. As a result, a V-shaped branching profile is formed in the region 40 near the edge.
  • a filler rib 44 engages in the V-shaped longitudinal recess 42 of the shaft 24, which is formed from the material of the cylinder core 20 delimiting the key channel 22.
  • This filling rib 44 is complementary to the longitudinal recess 42 of the shaft 24 according to FIGS. 5 and 6.
  • the boundary surfaces 46 and 48 of the longitudinal recess 42 are parallel to the side surface regions 32a and 34a. 5 and 6, the maximum thickness of the shaft 24 in the region 40 near the edge is not greater than the thickness of the key handle and approximately 30% greater than the maximum thickness of the shaft 24 outside the region 40 near the edge.
  • housing pin bores 50, 52 are provided in the profile bag 14.
  • the housing pin bores 50 include core pin bores 54;
  • the housing pin bores 52 include core pin bores 56.
  • the housing pin bores 50, 52 contain housing pins 58, 60;
  • the core pin bores 54, 56 contain core pins 62, 64.
  • the housing pins 58 and the core pins 62 together form a pair of tumbler pins 58, 62;
  • the housing pins 60 and the core pins 64 together form a tumbler pin pair 60, 64.
  • a plurality of tumbler pin pairs 58, 62 and a plurality of tumbler pin pairs 60, 64 lie one after the other perpendicular to the plane of the drawing.
  • the tumbler pin pairs 58, 62 lie in a longitudinal plane E; the tumbler pin pairs 60, 64 lie in a longitudinal plane F.
  • the two longitudinal planes E and F intersect in the cylinder core axis 0, which is also to be understood as the longitudinal axis of the profile locking cylinder.
  • the longitudinal planes E and F are arranged symmetrically on both sides of the plane of symmetry S of the profile locking cylinder and form an angle a with one another. This angle ⁇ is as large as the angle shown in FIGS. 2 and 6, which the side surface regions 32a and 34a and the boundary surfaces 46 and 48 enclose with one another.
  • the core pin bores 54, 56 are offset from one another in the axial direction of the profile locking cylinder, the core pin bores 56 each being in the middle between two successive core pin bores 54.
  • the tumbler pin pairs 58, 62 as can be seen from FIGS. 1, 4, 5 and 6, key notches 68 are arranged; Key notches 70 are assigned to tumbler pin pairs 60, 64, as can be seen from FIGS. 4 and 5.
  • 1 shows the engagement of a core pin 62 of a tumbler pin pair 58, 62 in a key notch 68. As can be seen in FIG.
  • the key notches are defined by notch delimiting surfaces 68a, 68b, 68c, namely flanks 68a, 68b and a control surface 68c , of which a flank 68b can be seen in FIGS. 1 and 6.
  • the key notches 70 are defined by notch delimitation surfaces 70a, 70b and 70c, namely flanks 70a, 70b and a control surface 70c, of which the flank 70b can be seen in FIG. 5.
  • the notch delimitation surfaces 68a, 68b, 68c are perpendicular to the longitudinal plane E
  • the notch delimitation surfaces 70a, 70b, 70c are perpendicular to the longitudinal plane F.
  • the longitudinal planes E and F are also shown in FIGS. 5 and 6 , provided that the profile lock cylinder not shown in FIGS. 5 and 6 is in the same position relative to the shaft 24 as shown in FIG. 1.
  • the control surfaces 68c, 70c are used for core pin control.
  • the key notches 68 and 70 extend through both legs of the V-shaped branching profile. If the notch depth is small, it can happen that a key notch in one profile branch does not cut the opposite profile branch of the V-shaped branching profile.
  • Fig. 5 is made clear by a prism 72 inserted in the key notch 70 that the key notch 70 is open at both ends in the viewing direction perpendicular to the longitudinal plane F, i. H. is not limited by the material of the key.
  • FIG. 6 shows how the key notch 68 can be produced by a side milling cutter 74; the axis 76 of the side milling cutter 74 lies in the longitudinal plane E and is perpendicular to the plane of the drawing in FIG. H. it runs parallel to the longitudinal direction of the key, or viewed with the key inserted in FIG. 1, parallel to the cylinder core axis 0 of the profile locking cylinder.
  • the profile of the disk for generating the key notch 68 is shown in FIG. 7.
  • the radius of the side milling cutter 74 is large compared to the depth of the key notch 68 and against the thickness of the flat key shank 24, so that the key notch 68 generated by the grinding wheel 74 can be approximated by a prism, corresponding to that 5 shown prism 72.
  • all tumbler pin pairs 58, 62; 60, 64 are held in a position in which the parting planes 59, 61 of the tumbler pin pairs 58, 62; 60, 64 coincide with the inner peripheral surface 18 of the housing bore 16 so that the cylinder core 20 can be rotated by the inserted key.
  • the radially inner ends 63 of the core pins 62 are conical and curved in the tip region to match the angles defined between the notch delimitation surfaces 68a, 68b; the same naturally applies to the tips of the core pins 64.
  • the radially outer end surfaces 65 of the core pins 62 are rotationally symmetrical domes around the core pin axis and have a radius of curvature which is slightly smaller than the radius of the inner peripheral surface 18 of the housing bore 16.
  • the housing pins 58 and 60 are biased radially inward by helical compression springs 51 and 53.
  • additional tumbler pins 78, 80 are arranged in the cylinder core 20. These additional tumbler pins 78, 80 are springless tumbler pins.
  • the tumbler pins 78 interact with level fluctuations in the form of recesses 82 in the key side surface 32 and with recesses 84 in the inner peripheral surface 18 of the housing bore 16. The same applies to the tumbler pins 80. If the correct key 26 is inserted into the lock cylinder, the tumbler pins 78 can be inserted into the recesses 84 through the shaft 24 to such an extent that the shaft 24 can be pushed in and out of the key channel 22 without hindrance can.
  • the tumbler pins 78 can be pushed radially inward into the recesses 82 by the interaction of their mushroom heads with the recesses 84 so that the cylinder core 20 can be rotated.
  • the bore in the cylinder core 20 which receives the tumbler pin 78 is designated 79, it is offset in accordance with the shape of the tumbler pin 78.
  • tumbler pins 78 1 It is a plurality of tumbler pins 78 1 arranged one behind the other perpendicular to the plane of the drawing; the same applies to the tumbler pins 80. All tumbler pins 78 and 80 lie in a common plane Z which runs parallel to the cylinder core axis 0 of the locking cylinder outside this cylinder core axis 0 and is perpendicular to the plane of symmetry S. A tumbler pin 78 and a tumbler pin 80 can each lie in a common plane perpendicular to the axis 0, approximately in the middle between a core pin bore 56 and a core pin bore 54 in FIG. 3. However, the tumbler pins 78 and 80 can also be in different planes lie along axis 0.
  • tumbler pins 78 and 80 lie on different levels than the tumbler pin pairs 58, 62; 60, 64, so that the rotation of the cylinder core is not blocked by the engagement of the spring-loaded housing pins 58 and 60 in the bores 79 of the mushroom-shaped locking pins 78 and 80.
  • the tumbler pins 78 can all be of the same length, as can the tumbler pins 80.
  • the tumbler pins 78 and 80 can also be of equal length to one another; they can also be of different lengths, for example such that the tumbler pins of a first group have a first length and the tumbler pins of a second group have a second length, it being possible for the tumbler pins of both groups to be arranged in a mixed sequence.
  • lock cylinder to lock cylinder Further differentiations from lock cylinder to lock cylinder are possible by changing the guide and locking ribs 28 and the guide and locking grooves 30. Further differentiations from lock cylinder to lock cylinder are possible due to different lengths of the housing pins 58 and the core pins 62 and correspondingly different depths of the key notches 68. The principle of filling only individual housing pin bores 50 and core pin bores 54 with tumbler pin pairs for the purpose of differentiating between lock cylinder and lock cylinder can of course also be used. Furthermore, in order to differentiate individual locking cylinders from one another, one or more plates can be inserted between the housing pins 58 and the core pins 62.
  • Parent keys are designed so that they can be inserted regardless of the profile shape of the key channel 22; they receive recesses 82 of the same or different level so that the locking pins 78 can enter radially inwards for all or at least one group of locking cylinders, and they are designed in their notch design with respect to the key notches 68, 70 so that they hold the tumbler pin pairs 58, 62 Control all locking cylinders or a group of locking cylinders within a locking system in such a way that the parting planes 59 between the pins 58 and 62 or between these pins and inserted platelets fall into the inner peripheral surface 18 of the housing bore 16.
  • the key notches 68 and 70 cannot be easily milled on conventional key cutting machines, which increases the security of the profile locking cylinder according to the invention against key imitation by unauthorized persons.
  • the key notches 68 and 70 can be produced in the factory with a corresponding special device in a simple and rational manner.
  • the total number of tumbler pin pairs 58, 62; 60, 64 is larger than if the tumbler pin pairs were arranged in a single row, as is the case with the classic locking cylinders. Under unfavorable conditions, it may not be possible to accommodate as many tumbler pin pairs (considering the mutual influence of key notches and blind notches) as would be possible if the tumbler pin pairs were arranged in two mutually parallel planes without blind notches. However, this limitation is offset by the other advantages inherent in the invention and is in any case completely irrelevant if the additional closure variations are available through the additional locking pins 78 and 80 according to the preferred embodiment of the invention.
  • a rib 67 is provided in the key channel 22, which extends over the length of the key channel and which prevents the inward movement of the core pins 62, 64 when the key is pulled into the key channel.
  • the key notches of a row of notches continue at least partially in the profile branch of the key which receives the other row of notches as blind notches.
  • This characteristic appearance arises in particular when the manufacturing method according to FIGS. And 7 is used, which is of great importance with regard to rational factory production.
  • a reciprocating machining tool can also be used, which could be constructed similarly to how the prism 72 in FIG. 5 and which would have to reciprocate in the longitudinal direction of the prism in order to clear, plan or key the key notch 70 to file.

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  • Lock And Its Accessories (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Braking Arrangements (AREA)
  • Television Systems (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)
  • Valve Housings (AREA)
  • Mechanical Operated Clutches (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

1. Locking device having at least one profiled lock cylinder, this comprising a lock cylinder housing (10) with cock profile and a lock cylinder core (20), mounted rotatably in a bore (16) of the lock cylinder housing (10), with a key passage (22) formed for the reception of a flat key (26), where in the profile sack (14) of the lock cylinder housing (10) and in the lock cylinder core (20) housing pin bores (50, 52) and core pin bores (54, 56) are provided in two adjacent longitudinal planes (E, F) each directed in a row one behind the other towards the narrow side of the key passage (22), for the reception of springloaded pin tumbler pairs (58, 62; 60, 64), the core pins (62, 64) of which co-operate at their radially inner ends with two notch rows (68, 70) arranged in adjacent narrow side regions of the flat key (26), while furthermore the pin tumbler bores (50, 54; 52, 56) of the two rows are offset in relation to one another in the longitudinal direction of the lock cylinder core (20), and where finally the control faces (68c, 70c) of the notches (68, 70) of the flat key (26) stand substantially perpendicularly to the respective longitudinal plane (E, F) accommodating the pin tumbler pairs (58, 62; 60, 64), characterised by the combination of the following features : a) the longitudinal planes (E, F) containing the housing pin bores and core pin bores (50, 52; 54, 56) of the individual rows are inclined in relation to one another at an acute angle (alpha) converging towards the lock narrow side, the apex of which angle coincides approximately with the axis (O) of the cylinder core and the angle bisector of which coincides approximately with the plane (S) of symmetry of the lock cylinder, which passes through the cylinder core axis (O) ; b) the cross-sectional profile of the flat key (26) is branched on the narrow side forming a longitudinal recess (42) and the lock cylinder core (20) comprises a filler rib (44) engaging in the longitudinal recess (42) between the profile branches ; c) the key notches (68, 70) are continued at least in part by blind notches in the other profile branch in each case.

Description

Die Erfindung betrifft eine Schließvorrichtung nach dem Oberbegriff des Anspruchs 1.The invention relates to a locking device according to the preamble of claim 1.

Unter einem »Hahnprofil« werden jedenfalls in der deutschen Fachliteratur Profile der in Fig. 1 dargestellten Profilform verstanden. Von einem Flachschlüssel im Sinne der Erfindung spricht man in der Regel, wenn das Breite-zu-Dicke-Verhältnis des achsnormalen Schlüsselschafteinhüllquerschnitts von etwa 2,5:1 bis etwa 3,2: 1 ist (siehe auch Hron »Schloßkonstruktionen«, Rudolf Bohmann, Industrie- und Fachverlag, Heidelberg, Wien, 1952, Seite 104, zweiter Absatz).In any case, in the German specialist literature, a "rooster profile" is understood to mean profiles of the profile shape shown in FIG. 1. One generally speaks of a flat key in the sense of the invention if the width-to-thickness ratio of the axis-normal key shaft envelope cross-section is from approximately 2.5: 1 to approximately 3.2: 1 (see also Hron “lock constructions”, Rudolf Bohmann , Industrie- und Fachverlag, Heidelberg, Vienna, 1952, page 104, second paragraph).

Eine Schließvorrichtung nach dem Oberbegriff des Anspruchs 1 ist aus der DE-A-12 533 494 bekannt. Dabei sind die die Gehäusestift- und Kernstiftbohrungen der einzelnen Reihen enthaltenden Längsebenen zueinander und zu einer die Zylinderkernachse des Schließzylinders enthaltenden Symmetrieebene des Schließzylinders parallel. Die Steuerflächen des Flachschlüssels werden im Kopierfräsverfahren mit von beiden Seiten des Flachschlüssels arbeitenden Fingerfräsern planer Stirnfläche und quer zur Schlüsselflachseite liegender Fräserwelle erzeugt, welche die entsprechenden Kerben beidseitig in den massiv ausgebildeten Schlüsselschaft einfräsen. Diese Art der Herstellung der Steuerflächen ist für den befugten Ersthersteller der Schlüssel aufwendig. Für den unbefugten Nachahmer ist die Herstellung der Schlüssel zwar erschwert aber praktisch doch möglich, weil es bei der Einzelnachahmung der Schlüssel durch Unbefugte bekanntlich auf ein besonders rationelles Arbeiten nicht im gleichen Maße ankommt, wie bei der serienmäßigen Schlüsselfabrikation des Erstherstellers. Das Kerbenbild des Schlüssels entspricht exakt der Anordnung der Zuhaltungsstiftpaare im Schließzylinder.A locking device according to the preamble of claim 1 is known from DE-A-12 533 494. The longitudinal planes containing the housing pin and core pin bores of the individual rows are parallel to one another and parallel to a plane of symmetry of the locking cylinder containing the cylinder core axis of the locking cylinder. The control surfaces of the flat key are produced in the copy milling process with end mills working on both sides of the flat key with a flat end face and a cutter shaft lying transversely to the flat side of the key, which mill the corresponding notches on both sides into the solidly designed key shaft. This type of production of the control surfaces is the key for the authorized first manufacturer. For the unauthorized copycat, the production of the keys is difficult, but it is practically possible, because when it comes to copying the keys individually by unauthorized persons, it is a well-known fact that particularly efficient work is not as important as in the series production of the key by the first manufacturer. The key notch pattern corresponds exactly to the arrangement of the tumbler pin pairs in the locking cylinder.

Der Erfindung liegt die Aufgabe zugrunde, eine Schließvorrichtung der vorausgesetzten Gattung so auszubilden, daß unter Erhaltung erheblicher Schwierigkeiten bei unbefugter Nachahmung des Schlüssels dieser fabrikmäßig leichter hergestellt werden kann. Zur Lösung dieser Aufgabe dient die Kombination der Merkmale nach dem kennzeichnenden Teil des Anspruchs 1.The invention has for its object to provide a locking device of the required type so that it can be manufactured more easily in the factory while maintaining considerable difficulties with unauthorized imitation of the key. The combination of the features according to the characterizing part of claim 1 serves to achieve this object.

Bei der erfindungsgemäßen Ausbildung ist die Herstellung der Steuerflächen der Schlüsselkerben für den fabrikmäßigen Ersthersteller der Schlüssel bei entsprechender maschineller Einrichtung mit relativ unempfindlichen und lange Standzeiten aufweisenden Werkzeugen wie Scheibenfräsern sowie Räum-, Hobel- oder Feilwerkzeugen verhältnismäßig einfach. Gleichwohl stehen Einrichtungen dieser Art, bei denen die Werkzeuge in durch die Lage der Längsebene definierten besonderen Stellungen und Einstellwinkeln einjustiert werden müssen, der Masse potentieller unbefugter Nachahmer nicht ohne weiteres zur Verfügung. Die Erzeugung der Blindkerben erleichtert dabei die fabrikmäßige Herstellung, weil die Größe der Werkzeuge und ggf. deren Hub nicht durch den Zwang zur Vermeidung von Einschnitten in den jeweils anderen Profilzweig beschränkt sind.In the embodiment according to the invention, the production of the control surfaces of the key notches for the factory-made first manufacturer of the keys is relatively simple with appropriate mechanical equipment with relatively insensitive and long-life tools such as disc milling cutters and broaching, planing or filing tools. Nevertheless, devices of this type, in which the tools have to be adjusted in particular positions and setting angles defined by the position of the longitudinal plane, are not readily available to the mass of potential unauthorized imitators. The production of the blind notches facilitates the factory production because the size of the tools and possibly their stroke are not limited by the constraint to avoid cuts in the other profile branch.

Die Schlüssel der erfindungsgemäßen Schließvorrichtungen haben durch die Blindkerben, welche durch die Längsausnehmung von den eigentlichen Schlüsselkerben getrennt sind, ein charakteristisches Erscheinungsbild.The keys of the locking devices according to the invention have a characteristic appearance due to the blind notches, which are separated from the actual key notches by the longitudinal recess.

Ein weiterer Vorteil der erfindungsgemäßen Ausgestaltung ist darin zu sehen, daß die zur Bohrung der Gehäusestiftbohrungen eingesetzten Bohrnadeln annähernd senkrecht auf der Außenumfangsfläche des Schließzylindergehäuses angesetzt werden können, da ja die diese Gehäusestiftbohrungen enthaltenden Längsebenen durch die Achse des Schließzylinders gehen.Another advantage of the configuration according to the invention can be seen in the fact that the drilling needles used for drilling the housing pin bores can be applied approximately perpendicularly on the outer circumferential surface of the locking cylinder housing, since the longitudinal planes containing these housing pin bores pass through the axis of the locking cylinder.

Durch die Anordnung der Längsebenen in der Weise, daß die Winkelhalbierende des von ihnen eingeschlossenen spitzen Winkels annähernd mit der durch die Achse des Schließzylinders verlaufenden Symmetrieebene zusammenfällt, läßt sich der Neigungswinkel der Längsebenen trotz der Gehäusegestaltung mit Hahn-Profil verhältnismäßig groß gestalten, ohne daß die Gehäusestiftbohrungen die Begrenzungsflächen des Profilsacks anschneiden oder übermäßig schwächen. Die Größe dieses Winkels ist bestimmend für die Größe des Abstands der Kerbenreihen in den beiden Profilzweigen. Diesen Abstand groß zu halten ist erwünscht im Hinblick auf eine verringerte gegenseitige Beeinflussung von steuernden Kerben und Blindkerben im jeweiligen Profilzweig bei gegebenem Abstand der Zuhaltungsstiftpaare in Richtung der Achse des Schließzylinders. Man kann deshalb den Abstand der Zuhaltungsstiftpaare in den einzelnen Längsebenen ohne Gefahr der störenden gegenseitigen Beeinflussung von steuernden Kerben und Blindkerben gering halten, was wiederum erwünscht ist, um bei gegebener Länge des Profilschließzylinders eine möglichst große Anzahl von Zuhaltungsstiftpaaren in jeder Längsebene unterbringen zu können.By arranging the longitudinal planes in such a way that the bisector of the included acute angle approximately coincides with the plane of symmetry running through the axis of the lock cylinder, the angle of inclination of the longitudinal planes can be made relatively large despite the housing design with Hahn profile, without that Casing pin holes cut or excessively weaken the boundary surfaces of the profile bag. The size of this angle is decisive for the size of the distance between the rows of notches in the two profile branches. Keeping this distance large is desirable in view of a reduced mutual influence of controlling notches and blind notches in the respective profile branch for a given distance of the tumbler pin pairs in the direction of the axis of the locking cylinder. The distance between the tumbler pin pairs in the individual longitudinal planes can therefore be kept small without the risk of interfering mutual influence of controlling notches and blind notches, which in turn is desirable in order to be able to accommodate the largest possible number of tumbler pin pairs in each longitudinal plane for a given length of the profile locking cylinder.

Aus der GB-B-517 655 ist es bekannt, bei einem Profilschließzylinder den Flachschlüssel mit einem oder zwei zusätzlichen Profilzweigen seitlich der Hauptkerbenreihe auszuführen und die ggf. gekerbten Profilzweige zur Steuerung zusätzlicher Zuhaltungsstiftpaare zu verwenden, welche in entsprechend der Neigung der Profilzweige gelegten Längsebenen angeordnet sind. Dabei wird aber darauf geachtet, beim Einschneiden der Hauptkerben ein Anschneiden des bzw. der Profilzweige gerade zu vermeiden, so daß zum einen die fabrikmäßige Herstellung der Schlüssel durch Einschränkung des Scheibenfräserdurchmessers erschwert ist und andererseits nicht das charakteristische Bild mit den Blindkerben entsteht. Zwischen der Hauptkerbenreihe und den Profilzweigen ergibt sich bei dieser Ausführungsform eine Längsausnehmung, in welche eine Füllrippe des Schließzylinderkerns eingreift. Indessen besteht bei dieser Ausführungsform im Hinblick auf eine gattungsfremde Gestalt des Schließzylindergehäuses nicht das Problem der Unterbringung von Zuhaltungsstiftpaaren in einen räumlich beengten Profilsack, so daß diese Schrift auch keine Anregung zu der symmetrischen Anordnung der Längsebenen in bezug auf die Symmetrieebene des Profilschließzylinders geben konnte.From GB-B-517 655 it is known to design the flat key with one or two additional profile branches on the side of the main notch row in a profile locking cylinder and to use the possibly notched profile branches for controlling additional tumbler pin pairs, which are arranged in longitudinal planes arranged according to the inclination of the profile branches are. Care is taken, however, to avoid cutting the profile branch (s) when cutting the main notches, so that on the one hand the manufacture of the keys by the restriction of the side milling cutter diameter is made more difficult and on the other hand the characteristic image with the blind notches is not created. In this embodiment, there is a longitudinal recess between the main notch row and the profile branches, into which a filler rib of the locking cylinder that intervenes. However, in this embodiment, with regard to a non-generic shape of the lock cylinder housing, there is no problem of accommodating tumbler pin pairs in a spatially constricted profile bag, so that this document could not provide any suggestion for the symmetrical arrangement of the longitudinal planes with respect to the plane of symmetry of the profile lock cylinder.

Aus der DE-U-7 818 276 ist es bei einem Rundzylinder bekannt, Zuhaltungsstiftpaare, welche in bezüglich der Symmetrieebene symmetrisch angeordneten Längsebenen untergebracht sind, durch Ausnehmungen in einer Schlüsselschmalseite eines Flachschlüssels zu steuern, wobei aber keine Blindkerben vorgesehen sind. Im übrigen ist es aus der DE-C 373 825 schon sehr lange bekannt, bei Profilschließzylindern mit Rundschlüsseln Zuhaltungsstiftpaare in einer Mehrzahl von gegeneinander geneigten und symmetrisch in bezug auf eine Symmetrieebene angeordneten Längsebene anzuordnen.From DE-U-7 818 276 it is known in a round cylinder to control tumbler pin pairs, which are accommodated in longitudinal planes arranged symmetrically with respect to the plane of symmetry, through recesses in a narrow key side of a flat key, but no blind notches are provided. In addition, it has been known from DE-C 373 825 for a very long time to arrange tumbler pin pairs in profile lock cylinders with round keys in a plurality of longitudinal planes inclined with respect to one another and arranged symmetrically with respect to a plane of symmetry.

Aus der CH-A-162691 ist es zum Aufbau von Schließanlagen aus Schließzylindern mit Kreuzschlüssel bekannt, übergeordnete und untergeordnete Schlüssel mit Kerben unterschiedlicher Kerbentiefe auszuführen, wobei beim untergeordneten Schließzylinder das dieser Kerbe zugeordnete Zuhaltungsstiftpaar entfällt, so daß die dem entfallenen Zuhaltungsstiftpaar entsprechende Kerbe am untergeordneten Schlüssel als »Blindkerbe« angesprochen werden kann.From CH-A-162691 it is known for the construction of locking systems from locking cylinders with a cross key to execute superordinate and subordinate keys with notches of different notch depths Key can be addressed as a "blind notch".

Aus der CH-A-260 517 ist ein Schließzylinder bekannt, bei dem in den Seitenflächen eines Flachschlüssels in Achsrichtung der Flachschlüssels längliche Kerben zur Steuerung von Zuhaltungsstiftpaaren angeordnet sind. Die Länge der Kerben übersteigt das zur Steuerung der Zuhaltungsstiftpaare erforderliche Maß erheblich, so daß es nicht möglich ist, aus der Lage der Kerben am Schlüssel Rückschlüsse auf die Lage der Zuhaltungsstiftpaare im Schließzylinder zu ziehen.A locking cylinder is known from CH-A-260 517, in which elongated notches for controlling tumbler pin pairs are arranged in the side faces of a flat key in the axial direction of the flat key. The length of the notches considerably exceeds the amount required to control the tumbler pin pairs, so that it is not possible to draw conclusions about the position of the tumbler pin pairs in the locking cylinder from the position of the notches on the key.

Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.Advantageous developments of the invention result from the subclaims.

Die im Anspruch 2 angegebenen Winkelmaße tragen dem Wunsche Rechnung, daß die in den Längsebenen angeordneten Gehäusestiftbohrungen die Seitenwände des Profilsacks weder anschneiden noch übermäßig schwächen.The angular dimensions specified in claim 2 take into account the wish that the housing pin bores arranged in the longitudinal planes neither cut nor excessively weaken the side walls of the profile sack.

Durch die Maßnahme des Anspruchs 3 wird unter Erhaltung des Flachschlüsselcharakters der Abstand der Wirkungsebenen der Kerbenreihen erweitert und verhindert, daß sich die Kerben und Blindkerben in einem Profilzweig in unzulässiger Weise durchdringen.By the measure of claim 3, the spacing of the action planes of the rows of notches is expanded while maintaining the flat key character and prevents the notches and blind notches from penetrating in a profile branch in an inadmissible manner.

Die Maßnahme des Anspruchs 4 dient dem Ziele, für die Bildung der Steuerfläche in den Profilzweigen ausreichendes Fleisch am Flachschlüssel zur Verfügung zu stellen.The measure of claim 4 serves the goal of providing sufficient meat on the flat key for the formation of the control surface in the profile branches.

Die Maßnahme des Anspruchs 5 zielt darauf ab, in den parallel bleibenden Bereichen der Schlüsselseitenflächen in herkömmlicher Weise Führungs- und Sperrippen vorsehen zu können.The measure of claim 5 aims to be able to provide guide and locking ribs in the areas of the key side surfaces that remain parallel in a conventional manner.

Die Maßnahme des Anspruchs 6 dient der Erhaltung des Flachschlüsselcharakters.The measure of claim 6 serves to maintain the flat key character.

Durch die Maßnahme des Anspruchs 8 wird die Nachschließsicherheit erhöht.The security against locking is increased by the measure of claim 8.

Die Maßnahme des Anspruchs 9 ist aus dem Bestreben heraus zu verstehen, möglichst unveränderte Hahn-Profile verwenden zu können, die in ihrem zylindrischen Profilteil nur verhältnismäßig geringe Wandstärke zwischen Zylinderaußenumfangsfläche und Gehäusebohrung besitzen. Dabei können die Ausnehmungen in der Innenumfangsfläche der Gehäusebohrung Einzelausnehmungen sein, welche zweckmäßig durch nachträglich zu verschließende Radialbohrungen gebildet werden; es ist aber auch denkbar, die Ausnehmungen für eine Reihe von zusätzlichen Zuhaltestiften als zusammenhängende Nut in der Innenumfangsfläche der Gehäusebohrung auszuführen; eine solche Nut kann beispielsweise durch Räumen von der Gehäusebohrung her gewonnen werden.The measure of claim 9 is to be understood from the endeavor to be able to use as unchanged as possible rooster profiles which have only a relatively small wall thickness between the cylinder outer circumferential surface and the housing bore in their cylindrical profile part. The recesses in the inner circumferential surface of the housing bore can be individual recesses, which are expediently formed by radial bores to be subsequently closed; but it is also conceivable to design the recesses for a number of additional tumbler pins as a coherent groove in the inner circumferential surface of the housing bore; Such a groove can be obtained, for example, from the housing bore by broaching.

Um bei Anwendung der Maßnahme des Anspruchs 10 Kollisionen der niveauvariierten Steuerungsbereiche an den Flachschlüsselseitenflächen für die Steuerung der zusätzlichen Zuhaltestifte mit den kantseitigen Kerben für die Steuerung der federbelasteten Zuhaltungsstiftpaare zu vermeiden, läßt man die Kernbohrungen für die zusätzlichen Zuhaltestifte zweckmäßig nicht durch die Zylinderkernachse gehen, sondern ordnet sie so an, daß sie die Zylinderkernachse auf der von den Zuhaltungsstiftpaaren abgelegenen Seite kreuzen.In order to avoid collisions of the level-varied control areas on the flat key side surfaces for the control of the additional tumbler pins with the edge-side notches for the control of the spring-loaded tumbler pin pairs when applying the measure of claim 10, the core holes for the additional tumbler pins are expediently not passed through the cylinder core axis, but instead arrange them so that they cross the cylinder core axis on the side remote from the tumbler pin pairs.

Dies führt auch dazu, daß man die zusätzlichen Zuhaltestifte bevorzugt gemäß den Ansprüchen 11 und 12 anordnet.This also leads to the fact that the additional tumbler pins are preferably arranged according to claims 11 and 12.

Die Maßnahme des Anspruchs 13 -versteht sich aus dem Bestreben, ein möglichst ungehemmtes Drehen des Zylinderkerns zu ermöglichen, ohne die Kernstiftbohrungen für die zusätzlichen Zuhaltestifte im Kern übergroß dimensionieren zu müssen und dadurch den Zylinderkern übermäßig zu schwächen. Bei abgezogenem Flachschlüssel können dann die zusätzlichen Zuhaltestifte nicht in den Schlüsselkanal bis zum Führungsverlust hineinfallen.The measure of claim 13 is understood to be the endeavor to enable the cylinder core to rotate as freely as possible without having to oversize the core pin bores for the additional locking pins in the core and thereby excessively weaken the cylinder core. In flat key is removed then the additional mem can testifte l not fall to the guidance loss in the key channel.

Die Maßnahmen der Ansprüche 14 und 15 sind zu verstehen aus dem Bestreben, Kollisionen von Zuhaltungsstiften mit nicht zugehörigen Bohrungen zu vermeiden. Insbesondere soll das Eindringen der Gehäusestifte der federbelasteten Zuhaltungsstiftpaare in die für die zusätzlichen Zuhaltestifte bestimmten Bohrungen des Zylinderkerns durch die Maßnahme des Anspruchs 15 vermieden werden.The measures of claims 14 and 15 are to be understood from the endeavor to avoid collisions of tumbler pins with non-associated bores. In particular, the penetration of the housing pins of the spring-loaded tumbler pin pairs into the bores of the cylinder core intended for the additional tumbler pins is to be avoided by the measure of claim 15.

Die Maßnahme des Anspruchs 16 dient dem Ziele, den Führungsverlust der Kernstifte der federbelasteten Zuhaltungsstiftpaare in der jeweiligen Kernbohrung durch Radialeinwärtsverschiebung zu verhindern.The measure of claim 16 serves the aim of preventing the loss of guidance of the core pins of the spring-loaded tumbler pin pairs in the respective core bore by radial inward displacement.

Die Maßnahme des Anspruchs 18 zielt auf eine weitere Erhöhung der Nachschließsicherheit ab.The measure of claim 18 aims to further increase the security against locking.

Die Maßnahme des Anspruchs 19 soll auf einfache Weise sicherstellen, daß die Kernstifte der Zuhaltungsstiftpaare sich beim Drehen des Zylinderkerns an den Mündungen der Gehäusestiftbohrungen in die Zylinderkernbohrung nicht sperrend verhaken können.The measure of claim 19 is to ensure in a simple manner that the core pins of the tumbler pin pairs when turning the Zy linderkerns at the mouths of the housing pin holes in the cylinder core bore not locking.

Die Maßnahme des Anspruchs 20 sorgt für ein optimales Gleiten des Schlüssels über die radial inneren Enden der Kernstifte beim Einschieben und Ziehen des Schlüssels.The measure of claim 20 ensures optimal sliding of the key over the radially inner ends of the core pins when inserting and pulling the key.

Die erfindungsgemäßen Schließvorrichtungen eignen sich besonders für die Herstellung von Schließanlagen, wobei gemäß Anspruch 21 eine Vielzahl von Möglichkeiten besteht um die einzelnen Schließvorrichtungen zu unterscheiden.The locking devices according to the invention are particularly suitable for the production of locking systems, wherein according to claim 21 there is a multitude of possibilities to differentiate the individual locking devices.

»Schließanlage« wird hier ganz allgemein verstanden, gleichgültig, ob sämtlichen Schließzylindern oder Gruppen von ihnen ein übergeordneter Schlüssel zugeordnet ist."Locking system" is generally understood here, regardless of whether a master key is assigned to all locking cylinders or groups of them.

Als Schließanlage im weitesten Sinn wird z. B. auch verstanden, wenn eine Großwohnanlage mit ähnlichen Schließzylindern ausgerüstet ist, die sich untereinander durch eines oder mehrere der Unterscheidungsmerkmale a) bis d) des Anspruchs 21 unterscheiden, ohne daß übergeordnete Schlüssel existieren.As a locking system in the broadest sense, e.g. B. also understood if a large residential complex is equipped with similar locking cylinders, which differ from each other by one or more of the distinguishing features a) to d) of claim 21, without parent keys exist.

Zur Unterscheidungsmöglichkeit a) nach Anspruch 21 kommt auch noch hinzu, daß den Zuhaltungsstiftpaaren noch ein oder mehrere Plättchen beigelegt sein können, so daß sich unterschiedlich schließende Schließvorrichtungen ergeben, wobei dann ein etwaiger übergeordneter Schlüssel mit seiner Kerbentiefe so gewählt sein kann, daß bei Verwendung dieses übergeordneten Schlüssels für verschiedene Schließvorrichtungen verschiedene Trennebenen zwischen Plättchen und Stiften in die Trennfläche zwischen Zylinderkern und Gehäusebohrung fallen.In addition to the possibility of differentiation a) according to claim 21, there is also the fact that one or more plates can be added to the tumbler pin pairs, so that different closing mechanisms result, in which case a superordinate key with its notch depth can be chosen so that when using this parent key for different locking devices different separating planes between platelets and pins fall into the separating surface between the cylinder core and the housing bore.

Im Falle der Zylinderdifferenzierung durch das Unterscheidungsmerkmal b) nach Anspruch 21 geht man bevorzugt so vor, daß man innerhalb einer Gruppe oder Untergruppe von Schließzylindern in dem Zylinderkern an jeweils gleichen Stellen Bohrungen für die zusätzlichen Zuhaltestifte vorsieht, wobei die Unterscheidung einzelner Schließzylinder innerhalb der Gruppe bzw. Untergruppe durch nach Ort und/oder Zahl unterschiedliche Besetzung dieser Bohrungen mit zusätzlichen Zuhaltestiften erfolgt, wie in der DE-AS 2 003 059 im einzelnen dargelegt.In the case of cylinder differentiation by means of the distinguishing feature b) according to claim 21, the preferred procedure is to provide holes for the additional locking pins in the cylinder core at the same locations within a group or subgroup of locking cylinders, the differentiation of individual locking cylinders within the group or Subgroup is carried out by filling these bores with additional tumbler pins differently according to location and / or number, as detailed in DE-AS 2 003 059.

Die Figuren erläutern die Erfindung anhand eines Ausführungsbeispiels, es stellt dar:

  • Fig. 1 einen achsnormalen Schnitt durch einen Profilschließzylinder einer erfindungsgemäßen Schließvorrichtung längs Linie I-I der Fig. 3;
  • Fig. 2 einen achsnormalen Schnitt durch den Profilschließzylinder längs Linie 11-11 der Fig. 3;
  • Fig. 3 einen achsparallelen Schnitt durch den Profilschließzylinder längs Linie 111-111 der Fig. 1;
  • F i g. 4 eine Seitenansicht eines Schlüssels für den Profilschließzylinder gemäß Fig. 1 bis 3 in Pfeilrichtung IV der Fig. 6;
  • Fig. 5 einen Schnitt nach Linie V-V der Fig. 4;
  • Fig. 6 einen Schnitt nach Linie VI-VI der Fig. 4; und
  • Fig. 7 einen Scheibenfräser zum Einfräsen von Kerben im Schlüssel gemäß Fig. 4 bis 6.
The figures explain the invention using an exemplary embodiment, it shows:
  • FIG. 1 shows an axis-normal section through a profile locking cylinder of a locking device according to the invention along line II of FIG. 3;
  • FIG. 2 shows an axis-normal section through the profile locking cylinder along line 11-11 of FIG. 3;
  • 3 shows an axially parallel section through the profile locking cylinder along line 111-111 of FIG. 1;
  • F i g. 4 shows a side view of a key for the profile locking cylinder according to FIGS. 1 to 3 in the direction of arrow IV of FIG. 6;
  • Fig. 5 is a section along line VV of Fig. 4;
  • Fig. 6 is a section along line VI-VI of Fig. 4; and
  • 7 shows a side milling cutter for milling notches in the key according to FIGS. 4 to 6.

In Fig. 1 erkennt man einen Profilschließzylinder mit einem Zylindergehäuse 10, welches als Hahn-Profil ausgebildet ist. Das in Fig. 1 dargestellte Hahn-Profil mit dem zylindrischen Profilteil 12 und dem Profilsack 14 ist maßstabgetreu dargestellt. Das Zylindergehäuse 10 weist eine Gehäusebohrung 16 mit einer Innenumfangsfläche 18 auf. In die Gehäusebohrung 16 ist ein Zylinderkern 20 drehbar eingesetzt. Der Zylinderkern 20 weist einen Schlüsselkanal 22 auf. In diesem Schlüsselkanal 22 ist der Schaft 24 eines Flachschlüssels 26 eingesetzt. Der Flachschlüssel 26 ist im einzelnen in Fig. 4 bis 6 dargestellt. Der Schaft 24 ist, wie aus den Fig. 4 bis 6 zu ersehen, mit längsverlaufenden Sperr- und Führungsrippen 28 und dazwischen verlaufenden Sperr- und Führungsnuten 30 versehen. Die eine Seitenfläche des Schafts 24 ist mit 32, die andere mit 34 bezeichnet. Die Seitenflächen 32 und 34 sind durch Kantflächen 36 und 38 miteinander verbunden. Die Kantflächen 36 und 38 sind, wie aus Fig. 5 und 6 zu ersehen, schmaler als die Seitenflächen 32 und 34, so daß von einem Flachschlüssel gesprochen werden kann. Der Flachschlüssel weist angrenzend an die Kantfläche 38 einen kantnahen Bereich 40 auf, welcher durch Seitenflächenbereiche 32a und 34a definiert ist. Die Breite des kantnahen Bereichs 40 entspricht etwa 20% der Gesamtbreite der Schlüsselseitenflächen 32 und 34. Die kantnahen Seitenflächenbereiche 32a und 34a schließen miteinander einen Winkel ex von ca. 30° ein. Zwischen den kantnahen Seitenflächenbereichen 32a und 34a ist in die Kantfläche 38 des Schafts 24 eine V-förmige Längsausnehmung 42 eingelassen. Dadurch ist im kantnahen Bereich 40 ein V-förmiges Verzweigungsprofil gebildet.In Fig. 1 you can see a profile lock cylinder with a cylinder housing 10, which is designed as a cock profile. The tap profile shown in Fig. 1 with the cylindrical profile part 12 and the profile bag 14 is shown to scale. The cylinder housing 10 has a housing bore 16 with an inner peripheral surface 18. A cylinder core 20 is rotatably inserted into the housing bore 16. The cylinder core 20 has a key channel 22. The shaft 24 of a flat key 26 is inserted into this key channel 22. The flat key 26 is shown in detail in FIGS. 4 to 6. The shaft 24 is, as can be seen from FIGS. 4 to 6, provided with longitudinal locking and guide ribs 28 and locking and guide grooves 30 extending therebetween. One side surface of the shaft 24 is designated 32, the other 34. The side surfaces 32 and 34 are connected to one another by edge surfaces 36 and 38. The edge surfaces 36 and 38 are, as can be seen from FIGS. 5 and 6, narrower than the side surfaces 32 and 34, so that one can speak of a flat key. The flat key has a region 40 near the edge, which is defined by side surface regions 32a and 34a, adjacent to the edge surface 38. The width of the region 40 close to the edge corresponds to approximately 20% of the total width of the key side surfaces 32 and 34. The side surface regions 32a and 34a close to the edge form an angle ex of approximately 30 ° with one another. A V-shaped longitudinal recess 42 is let into the edge surface 38 of the shaft 24 between the edge surface areas 32a and 34a near the edge. As a result, a V-shaped branching profile is formed in the region 40 near the edge.

Wie man aus Fig. ersieht, greift in die V-förmige Längsausnehmung 42 des Schafts 24 eine Füllrippe 44 ein, welche aus dem den Schlüsselkanal 22 begrenzenden Material des Zylinderkerns 20 gebildet ist. Diese Füllrippe 44 ist komplementär zu der Längsausnehmung 42 des Schafts 24 gemäß den Fig. 5 und 6.As can be seen from FIG. 1, a filler rib 44 engages in the V-shaped longitudinal recess 42 of the shaft 24, which is formed from the material of the cylinder core 20 delimiting the key channel 22. This filling rib 44 is complementary to the longitudinal recess 42 of the shaft 24 according to FIGS. 5 and 6.

Die Begrenzungsflächen 46 und 48 der Längsausnehmung 42 sind parallel zu den Seitenflächenbereichen 32a bzw. 34a. Die maximale Dicke des Schafts 24 ist, wie aus Fig. 5 und 6 zu ersehen, im kantnahen Bereich 40 nicht größer als die Dicke des Schlüsselgriffs und etwa um 30% größer als die maximale Dicke des Schafts 24 außerhalb des kantnahen Bereichs 40.The boundary surfaces 46 and 48 of the longitudinal recess 42 are parallel to the side surface regions 32a and 34a. 5 and 6, the maximum thickness of the shaft 24 in the region 40 near the edge is not greater than the thickness of the key handle and approximately 30% greater than the maximum thickness of the shaft 24 outside the region 40 near the edge.

Wie aus Fig. 1 zu ersehen, sind in dem Profilsack 14 Gehäusestiftbohrungen 50, 52 vorgesehen. Zu den Gehäusestiftbohrungen 50 gehören Kernstiftbohrungen 54; zu den Gehäusestiftbohrungen 52 gehören Kernstiftbohrungen 56. In der Ruhestellung des Schließzylinders bei abgezogenem Schlüssel fluchten die Gehäusestiftbohrungen 50, 52 mit den Kernstiftbohrungen 54, 56. Die Gehäusestiftbohrungen 50, 52 enthalten Gehäusestifte 58, 60; die Kernstiftbohrungen 54, 56 enthalten Kernstifte 62, 64. Die Gehäusestifte 58 und die Kernstifte 62 bilden zusammen je ein Zuhaltungsstiftpaar 58, 62; die Gehäusestifte 60 und die Kernstifte 64 bilden zusammen je ein Zuhaltungsstiftpaar 60, 64. In Fig. 1 betrachtet, liegt eine Mehrzahl von Zuhaltungsstiftpaaren 58, 62 und eine Mehrzahl von Zuhaltungsstiftpaaren 60, 64, senkrecht zur Zeichenebene hintereinander. Die Zuhaltungsstiftpaare 58, 62 liegen in einer Längsebene E; die Zuhaltungsstiftpaare 60, 64 liegen in einer Längsebene F. Die beiden Längsebenen E und F schneiden sich in der Zylinderkernachse 0, die auch als Längsachse des Profilschließzylinders zu verstehen ist. Die Längsebenen E und F sind symmetrisch beiderseits der Symmetrieebene S des Profilschließzylinders angeordnet und schließen miteinander einen Winkel a ein. Dieser Winkel a ist ebenso groß wie der in den Fig. 2 und 6 eingezeichnete Winkel, den dort die Seitenflächenbereiche 32a und 34a sowie die Begrenzungsflächen 46 und 48 miteinander einschließen.As can be seen from FIG. 1, housing pin bores 50, 52 are provided in the profile bag 14. The housing pin bores 50 include core pin bores 54; The housing pin bores 52 include core pin bores 56. In the rest position of the locking cylinder with the key removed, the housing pin bores 50, 52 are aligned with the core pin bores 54, 56. The housing pin bores 50, 52 contain housing pins 58, 60; the core pin bores 54, 56 contain core pins 62, 64. The housing pins 58 and the core pins 62 together form a pair of tumbler pins 58, 62; the housing pins 60 and the core pins 64 together form a tumbler pin pair 60, 64. Viewed in FIG. 1, a plurality of tumbler pin pairs 58, 62 and a plurality of tumbler pin pairs 60, 64 lie one after the other perpendicular to the plane of the drawing. The tumbler pin pairs 58, 62 lie in a longitudinal plane E; the tumbler pin pairs 60, 64 lie in a longitudinal plane F. The two longitudinal planes E and F intersect in the cylinder core axis 0, which is also to be understood as the longitudinal axis of the profile locking cylinder. The longitudinal planes E and F are arranged symmetrically on both sides of the plane of symmetry S of the profile locking cylinder and form an angle a with one another. This angle α is as large as the angle shown in FIGS. 2 and 6, which the side surface regions 32a and 34a and the boundary surfaces 46 and 48 enclose with one another.

Wie man aus Fig. 3 erkennen kann, sind die Kernstiftbohrungen 54, 56 in Achsrichtung des Profilschließzylinders gegeneinander versetzt, wobei die Kernstiftbohrungen 56 jeweils in der Mitte zwischen zwei einanderfolgenden Kernstiftbohrungen 54 sind. Den Zuhaltungsstiftpaaren 58, 62 sind, wie aus den Fig. 1, 4, 5 und 6 zu ersehen, Schlüsselkerben 68 angeordnet; den Zuhaltungsstiftpaaren 60, 64 sind, wie aus Fig. 4 und 5 zu ersehen, Schlüsselkerben 70 zugeordnet. In Fig. 1 erkennt man den Eingriff eines Kernstifts 62 eines Zuhaltungsstiftpaars 58, 62 in eine Schlüsselkerbe 68. Die Schlüsselkerben sind, wie aus Fig. 4 ersichtlich, durch Kerbenbegrenzungsflächen 68a, 68b, 68c, nämlich Flanken 68a, 68b und eine Steuerfläche 68c definiert, von denen man in Fig. 1 und 6 eine Flanke 68b erkennt. Die Schlüsselkerben 70 sind durch Kerbenbegrenzungsflächen 70a, 70b und 70c definiert, nämlich Flanken 70a, 70b und eine Steuerfläche 70c, von denen man in Fig. 5 die Flanke 70b erkennt. Die Kerbenbegrenzungsflächen 68a, 68b, 68c stehen senkrecht auf der Längsebene E, die Kerbenbegrenzungsflächen 70a, 70b, 70c stehen senkrecht auf der Längsebene F. Die Längsebenen E und F sind, um dies deutlich zu machen, auch in den Fig. 5 und 6 eingezeichnet, unter der Voraussetzung, daß der in den Fig. 5 und 6 nicht eingezeichnete Profilschließzylinder relativ zum Schaft 24 die gleiche Stellung einnimmt, wie in Fig. 1 dargestellt. Die Steuerflächen 68c, 70c dienen der Kernstiftsteuerung.As can be seen from FIG. 3, the core pin bores 54, 56 are offset from one another in the axial direction of the profile locking cylinder, the core pin bores 56 each being in the middle between two successive core pin bores 54. The tumbler pin pairs 58, 62, as can be seen from FIGS. 1, 4, 5 and 6, key notches 68 are arranged; Key notches 70 are assigned to tumbler pin pairs 60, 64, as can be seen from FIGS. 4 and 5. 1 shows the engagement of a core pin 62 of a tumbler pin pair 58, 62 in a key notch 68. As can be seen in FIG. 4, the key notches are defined by notch delimiting surfaces 68a, 68b, 68c, namely flanks 68a, 68b and a control surface 68c , of which a flank 68b can be seen in FIGS. 1 and 6. The key notches 70 are defined by notch delimitation surfaces 70a, 70b and 70c, namely flanks 70a, 70b and a control surface 70c, of which the flank 70b can be seen in FIG. 5. The notch delimitation surfaces 68a, 68b, 68c are perpendicular to the longitudinal plane E, the notch delimitation surfaces 70a, 70b, 70c are perpendicular to the longitudinal plane F. To make this clear, the longitudinal planes E and F are also shown in FIGS. 5 and 6 , provided that the profile lock cylinder not shown in FIGS. 5 and 6 is in the same position relative to the shaft 24 as shown in FIG. 1. The control surfaces 68c, 70c are used for core pin control.

Wie aus Fig. 5 und 6 ersichtlich, erstrecken sich die Schlüsselkerben 68 und 70 durch beide Schenkel des V-förmigen Verzweigungsprofils. Bei geringer Kerbentiefe kann es allerdings vorkommen, daß auch einmal eine Schlüsselkerbe in dem einen Profilzweig den gegenüberliegenden Profilzweig des V-förmigen Verzweigungsprofils nicht anschneidet.5 and 6, the key notches 68 and 70 extend through both legs of the V-shaped branching profile. If the notch depth is small, it can happen that a key notch in one profile branch does not cut the opposite profile branch of the V-shaped branching profile.

In Fig. 5 ist durch ein in die Schlüsselkerbe 70 eingelegtes Prisma 72 deutlich gemacht, daß die Schlüsselkerbe 70 in Durchblicksrichtung senkrecht zur Längsebene F beidendig offen ist, d. h. nicht durch Material des Schlüssels begrenzt ist.In Fig. 5 is made clear by a prism 72 inserted in the key notch 70 that the key notch 70 is open at both ends in the viewing direction perpendicular to the longitudinal plane F, i. H. is not limited by the material of the key.

In Fig. 6 ist dargestellt, wie die Schlüsselkerbe 68 durch einen Scheibenfräser 74 erzeugt werden kann; die Achse 76 des Scheibenfräsers 74 liegt in der Längsebene E und steht in Fig. 6 senkrecht zur Zeichenebene, d. h. sie verläuft parallel zur Schlüssellängsrichtung, oder bei eingestecktem Schlüssel in Fig. 1 betrachtet, parallel zur Zylinderkernachse 0 des Profilschließzylinders. Das Profil der Scheibe zur Erzeugung der Schlüsselkerbe 68 ist in Fig. 7 dargestellt. Der Radius des Scheibenfräsers 74 ist, wie aus Fig. 6 und 7 ersichtlich, groß gegen die Tiefe der Schlüsselkerbe 68 und gegen die Dicke des Flachschlüsselschafts 24, so daß die durch die Schleifscheibe 74 erzeugte Schlüsselkerbe 68 durch ein Prisma angenähert werden kann, entsprechend dem in Fig. 5 eingezeichneten Prisma 72.FIG. 6 shows how the key notch 68 can be produced by a side milling cutter 74; the axis 76 of the side milling cutter 74 lies in the longitudinal plane E and is perpendicular to the plane of the drawing in FIG. H. it runs parallel to the longitudinal direction of the key, or viewed with the key inserted in FIG. 1, parallel to the cylinder core axis 0 of the profile locking cylinder. The profile of the disk for generating the key notch 68 is shown in FIG. 7. 6 and 7, the radius of the side milling cutter 74 is large compared to the depth of the key notch 68 and against the thickness of the flat key shank 24, so that the key notch 68 generated by the grinding wheel 74 can be approximated by a prism, corresponding to that 5 shown prism 72.

Wenn der richtige Schlüssel eingesteckt ist, so sind sämtliche Zuhaltungsstiftpaare 58,62; 60, 64 durch die ihnen zugehörigen Schlüsselkerben 68 bzw. 70 in einer Stellung gehalten, in welcher die Trennebenen 59, 61 der Zuhaltungsstiftpaare 58, 62; 60, 64 mit der Innenumfangsfläche 18 der Gehäusebohrung 16 zusammenfallen, so daß der Zylinderkern 20 durch den eingesteckten Schlüssel gedreht werden kann. Die radial inneren Enden 63 der Kernstifte 62 sind konisch und im Spitzenbereich gewölbt in Anpassung an die zwischen den Kerbenbegrenzungsflächen 68a, 68b definierten Winkel; entsprechendes gilt natürlich für die Spitzen der Kernstifte 64. Die radial äußeren Endflächen 65 der Kernstifte 62 sind rotationssymmetrische Kuppeln um die Kernstiftachse und haben einen Krümmungsradius, der geringfügig kleiner ist als der Radius der Innenumfangsfläche 18 der Gehäusebohrung 16.If the correct key is inserted, all tumbler pin pairs 58, 62; 60, 64 are held in a position in which the parting planes 59, 61 of the tumbler pin pairs 58, 62; 60, 64 coincide with the inner peripheral surface 18 of the housing bore 16 so that the cylinder core 20 can be rotated by the inserted key. The radially inner ends 63 of the core pins 62 are conical and curved in the tip region to match the angles defined between the notch delimitation surfaces 68a, 68b; the same naturally applies to the tips of the core pins 64. The radially outer end surfaces 65 of the core pins 62 are rotationally symmetrical domes around the core pin axis and have a radius of curvature which is slightly smaller than the radius of the inner peripheral surface 18 of the housing bore 16.

Die Gehäusestifte 58 und 60 sind durch Schraubendruckfedern 51 und 53 radial einwärts vorgespannt.The housing pins 58 and 60 are biased radially inward by helical compression springs 51 and 53.

Wie aus Fig. 1 ersichtlich, sind in dem Zylinderkern 20 pilzförmige zusätzliche Zuhaltestifte 78, 80 angeordnet. Diese zusätzlichen Zuhaltestifte 78, 80 sind federlose Zuhaltestifte. Die Zuhaltestifte 78 wirken mit Niveauschwankungen in Form von Ausnehmungen 82 in der Schlüsselseitenfläche 32 und mit Ausnehmungen 84 in der Innenumfangsfläche 18 der Gehäusebohrung 16 zusammen. Entsprechendes gilt für die Zuhaltestifte 80. Wenn der richtige Schlüssel 26 in den Schließzylinder eingeschoben ist, so können die Zuhaltestifte 78 durch den Schaft 24 so weit in die Ausnehmungen 84 eingeschoben werden, daß der Schaft 24 unbehindert in dem Schlüsselkanal 22 aus- und eingeschoben werden kann. Andererseits können beim Drehen des Zylinderkerns 20 durch den eingeschobenen Schlüssel die Zuhaltestifte 78 durch Zusammenwirken ihrer Pilzköpfe mit den Ausnehmungen 84 so weit radial einwärts in die Ausnehmungen 82 hineingeschoben werden, daß der Zylinderkern 20 verdreht werden kann. Die den Zuhaltestift 78 aufnehmende Bohrung im Zylinderkern 20 ist mit 79 bezeichnet, sie ist der Form des Zuhaltestifts 78 entsprechend abgesetzt.1, mushroom-shaped additional tumbler pins 78, 80 are arranged in the cylinder core 20. These additional tumbler pins 78, 80 are springless tumbler pins. The tumbler pins 78 interact with level fluctuations in the form of recesses 82 in the key side surface 32 and with recesses 84 in the inner peripheral surface 18 of the housing bore 16. The same applies to the tumbler pins 80. If the correct key 26 is inserted into the lock cylinder, the tumbler pins 78 can be inserted into the recesses 84 through the shaft 24 to such an extent that the shaft 24 can be pushed in and out of the key channel 22 without hindrance can. On the other hand, when the cylinder core 20 is rotated by the inserted key, the tumbler pins 78 can be pushed radially inward into the recesses 82 by the interaction of their mushroom heads with the recesses 84 so that the cylinder core 20 can be rotated. The bore in the cylinder core 20 which receives the tumbler pin 78 is designated 79, it is offset in accordance with the shape of the tumbler pin 78.

Es ist eine Mehrzahl von Zuhaltungsstiften 78 in Fig. 1 senkrecht zur Zeichenebene hintereinander angeordnet; das gleiche gilt für die Zuhaltestifte 80. Sämtliche Zuhaltestifte 78 und 80 liegen in einer gemeinsamen Ebene Z, die parallel zu der Zylinderkernachse 0 des Schließzylinders außerhalb dieser Zylinderkernachse 0 verläuft und senkrecht zu der Symmetrieebene S steht. Es können jeweils ein Zuhaltestift 78 und ein Zuhaltestift 80 in einer gemeinsamen Ebene senkrecht zur Achse 0 liegen, etwa jeweils in der Mitte zwischen einer Kernstiftbohrung 56 und einer Kernstiftbohrung 54 in Fig. 3. Es können aber auch die Zuhaltestifte 78 und 80 in verschiedenen Ebenen längs der Achse 0 liegen. Wichtig ist aber, daß die Zuhaltestifte 78 und 80 in anderen Ebenen liegen als die Zuhaltungsstiftpaare 58, 62; 60, 64, damit das Drehen des Zylinderkerns nicht durch das Eingreifen der federbelasteten Gehäusestifte 58 und 60 in die Bohrungen 79 der pilzförmigen Zuhaltestifte 78 und 80 blockiert wird.It is a plurality of tumbler pins 78 1 arranged one behind the other perpendicular to the plane of the drawing; the same applies to the tumbler pins 80. All tumbler pins 78 and 80 lie in a common plane Z which runs parallel to the cylinder core axis 0 of the locking cylinder outside this cylinder core axis 0 and is perpendicular to the plane of symmetry S. A tumbler pin 78 and a tumbler pin 80 can each lie in a common plane perpendicular to the axis 0, approximately in the middle between a core pin bore 56 and a core pin bore 54 in FIG. 3. However, the tumbler pins 78 and 80 can also be in different planes lie along axis 0. It is important, however, that the tumbler pins 78 and 80 lie on different levels than the tumbler pin pairs 58, 62; 60, 64, so that the rotation of the cylinder core is not blocked by the engagement of the spring-loaded housing pins 58 and 60 in the bores 79 of the mushroom-shaped locking pins 78 and 80.

Die Zuhaltestifte 78 können alle gleich lang sein, ebenso die Zuhaltestifte 80. Es können auch die Zuhaltestifte 78 und 80 untereinander gleich lang sein; sie können auch unterschiedlich lang sein, etwa so, daß die Zuhaltestifte einer ersten Gruppe eine erste Länge haben und die Zuhaltestifte einer zweiten Gruppe eine zweite Länge, wobei die Zuhaltestifte beider Gruppen in gemischter Folge angeordnet sein können. Man kann die maximal vorkommende Zahl von Bohrungen 79 für die Zuhaltestifte 78 und 80 vorbohren und die Differenzierung von Schließzylinder zu Schließzylinder innerhalb einer Schließanlage durch nach Zahl und Ort unterschiedliche Besetzung der Bohrungen 79 mit Zuhaltestiften 78 vornehmen.The tumbler pins 78 can all be of the same length, as can the tumbler pins 80. The tumbler pins 78 and 80 can also be of equal length to one another; they can also be of different lengths, for example such that the tumbler pins of a first group have a first length and the tumbler pins of a second group have a second length, it being possible for the tumbler pins of both groups to be arranged in a mixed sequence. You can pre-drill the maximum number of holes 79 for the locking pins 78 and 80 and differentiate between locking cylinder and locking cylinder within a locking system by filling the holes 79 with locking pins 78 differently according to number and location.

Weitere Differenzierungen von Schließzylinder zu Schließzylinder sind möglich durch Veränderung der Führungs- und Sperrippen 28 sowie der Führungs- und Sperrnuten 30. Weitere Differenzierungen von Schließzylinder zu Schließzylinder sind möglich durch unterschiedliche Länge der Gehäusestifte 58 und der Kernstifte 62 und entsprechend unterschiedliche Tiefe der Schlüsselkerben 68. Das Prinzip der Besetzung nur einzelner Gehäusestiftbohrungen 50 und Kernstiftbohrungen 54 mit Zuhaltungsstiftpaaren zum Zwecke der Differenzierung von Schließzylinder zu Schließzylinder kann natürlich auch angewandt werden. Weiterhin können zur Differenzierung einzelner Schließzylinder untereinander ein oder mehrere Plättchen zwischen die Gehäusestifte 58 und die Kernstifte 62 eingelegt werden.Further differentiations from lock cylinder to lock cylinder are possible by changing the guide and locking ribs 28 and the guide and locking grooves 30. Further differentiations from lock cylinder to lock cylinder are possible due to different lengths of the housing pins 58 and the core pins 62 and correspondingly different depths of the key notches 68. The principle of filling only individual housing pin bores 50 and core pin bores 54 with tumbler pin pairs for the purpose of differentiating between lock cylinder and lock cylinder can of course also be used. Furthermore, in order to differentiate individual locking cylinders from one another, one or more plates can be inserted between the housing pins 58 and the core pins 62.

Übergeordnete Schlüssel werden so ausgebildet, daß sie ohne Rücksicht auf die Profilform des Schlüsselkanals 22 eingeschoben werden können; sie erhalten Ausnehmungen 82 von gleichem oder unterschiedlichem Niveau, so daß für alle oder mindestens eine Gruppe von Schließzylindern die Zuhaltestifte 78 radial einwärts eintreten können, und sie werden in ihrer Kerbengestaltung bezüglich der Schlüsselkerben 68, 70 so gestaltet, daß sie die Zuhaltungsstiftpaare 58, 62 aller Schließzylinder oder einer Gruppe von Schließzylindern innerhalb einer Schließanlage derart steuern, daß die Trennebenen 59 zwischen den Stiften 58 und 62 bzw. zwischen diesen Stiften und eingelegten Plättchen in die Innenumfangsfläche 18 der Gehäusebohrung 16 fallen.Parent keys are designed so that they can be inserted regardless of the profile shape of the key channel 22; they receive recesses 82 of the same or different level so that the locking pins 78 can enter radially inwards for all or at least one group of locking cylinders, and they are designed in their notch design with respect to the key notches 68, 70 so that they hold the tumbler pin pairs 58, 62 Control all locking cylinders or a group of locking cylinders within a locking system in such a way that the parting planes 59 between the pins 58 and 62 or between these pins and inserted platelets fall into the inner peripheral surface 18 of the housing bore 16.

Man erkennt ohne weiteres, daß die Schlüsselkerben 68 und 70 auf herkömmlichen Schlüsselfräsmaschinen nicht ohne weiteres gefräst werden können, was die Sicherheit der erfindungsgemäßen Profilschließzylinder gegen Schlüsselnachahmung durch Unbefugte erhöht. Man erkennt aber auch aus den Fig. 6 und 7, daß die Herstellung der Schlüsselkerben 68 und 70 im Fabrikbetrieb mit entsprechender Spezialeinrichtung auf einfache und rationelle Weise vorgenommen werden kann.It can easily be seen that the key notches 68 and 70 cannot be easily milled on conventional key cutting machines, which increases the security of the profile locking cylinder according to the invention against key imitation by unauthorized persons. However, it can also be seen from FIGS. 6 and 7 that the key notches 68 and 70 can be produced in the factory with a corresponding special device in a simple and rational manner.

Die Gesamtzahl der unterzubringenden Zuhaltungsstiftpaare 58, 62; 60, 64 ist größer, als wenn die Zuhaltungsstiftpaare in einer einzigen Reihe angeordnet wären, wie dies bei den klassischen Schließzylindern der Fall ist. Unter ungünstigen Bedingungen können möglicherweise nicht so viele Zuhaltungsstiftpaare untergebracht werden (mit Rücksicht auf gegenseitige Beeinflussung von Schlüsselkerben und Blindkerben), wie dies bei Anordnung von Zuhaltungsstiftpaaren in zwei zueinander parallelen Ebenen ohne Blindkerben möglich wäre. Diese Einschränkung wird aber durch die übrigen, der Erfindung inhärenten Vorteile aufgewogen und ist jedenfalls dann völlig unbeachtlich, wenn die zusätzlichen Schlie- ßungsvariationen durch die zusätzlichen Zuhaltestifte 78 und 80 nach der bevorzugten Ausführungsform der Erfindung zur Verfügung stehen.The total number of tumbler pin pairs 58, 62; 60, 64 is larger than if the tumbler pin pairs were arranged in a single row, as is the case with the classic locking cylinders. Under unfavorable conditions, it may not be possible to accommodate as many tumbler pin pairs (considering the mutual influence of key notches and blind notches) as would be possible if the tumbler pin pairs were arranged in two mutually parallel planes without blind notches. However, this limitation is offset by the other advantages inherent in the invention and is in any case completely irrelevant if the additional closure variations are available through the additional locking pins 78 and 80 according to the preferred embodiment of the invention.

Nachzutragen ist noch, daß, wie aus Fig. 1 ersichtlich, in dem Schlüsselkanal 22 eine Rippe 67 vorgesehen ist, welche sich über die Länge des Schlüsselkanals erstreckt und welche die Einwärtsbewegung der Kernstifte 62,64 bei gezogenem Schlüssel in den Schlüsselkanal verhindert.It should also be added that, as can be seen from FIG. 1, a rib 67 is provided in the key channel 22, which extends over the length of the key channel and which prevents the inward movement of the core pins 62, 64 when the key is pulled into the key channel.

Charakteristisch für die Schlüssel der erfindungsgemäßen Schließzylinder ist, daß sich die Schlüsselkerben einer Kerbenreihe wenigstens teilweise in dem die jeweils andere Kerbenreihe aufnehmenden Profilzweig des Schlüssels als Blindkerben fortsetzen. Dieses charakteristische Erscheinungsbild ergibt sich insbesondere dann, wenn das Herstellungsverfahren gemäß den Fig. und 7 angewandt wird, welches im Hinblick auf eine rationelle fabrikmäßige Fertigung von großer Bedeutung ist. Natürlich kann anstelle der rotierenden Scheibe auch ein hin- und hergehendes Bearbeitungswerkzeug verwendet werden, welches ähnlich aufgebaut sein könnte, wie das Prisma 72 in Fig. 5 und welches in Prismenlängsrichtung hin- und hergehen müßte, um die Schlüsselkerbe 70 zu räumen, zu hobeln oder zu feilen.It is characteristic of the keys of the locking cylinders according to the invention that the key notches of a row of notches continue at least partially in the profile branch of the key which receives the other row of notches as blind notches. This characteristic appearance arises in particular when the manufacturing method according to FIGS. And 7 is used, which is of great importance with regard to rational factory production. Of course, instead of the rotating disk, a reciprocating machining tool can also be used, which could be constructed similarly to how the prism 72 in FIG. 5 and which would have to reciprocate in the longitudinal direction of the prism in order to clear, plan or key the key notch 70 to file.

Wenn nicht alle Schlüsselkerben der einen Kerbenreihe entsprechende Blindkerben in dem der anderen Kerbenreihe zugehörigen Profilzweig ergeben, so liegt dies daran, daß bei der Herstellung extrem seichter Schlüsselkerben in der einen Kerbenreihe das Herstellungswerkzeug unter Umständen nicht mehr in das der anderen Kerbenreihe zugehörige Material einschneidet.If not all key notches of the one row of notches result in corresponding blind notches in the profile branch belonging to the other row of notches, this is because the production of extremely shallow key notches in the one row of notches may no longer cut the production tool into the material belonging to the other row of notches.

Claims (23)

1. Locking device having at least one profiled lock cylinder, this comprising a lock cylinder housing (10) with cock profile and a lock cylinder core (20), mounted rotatably in a bore (16) of the lock cylinder housing (10), with a key passage (22) formed for the reception of a flat key (26), where in the profile sack (14) of the lock cylinder housing (10) and in the lock cylinder core (20) housing pin bores (50, 52) and core pin bores (54, 56) are provided in two adjacent longitudinal planes (E, F) each directed in a row one behind the other towards the narrow side of the key passage (22), for the reception of springloaded pin tumbler pairs (58, 62; 60, 64), the core pins (62, 64) of which co-operate at their radially inner ends with two notch rows (68, 70) arranged in adjacent narrow side regions of the flat key (26), while furthermore the pin tumbler bores (50, 54; 52, 56) of the two rows are offset in relation to one another in the longitudinal direction of the lock cylinder core (20), and where finally the control faces (68c, 70c) of the notches (68, 70) of the flat key (26) stand substantially perpendicularly to the respective longitudinal plane (E, F) accommodating the pin tumbler pairs (58, 62; 60, 64), characterised by the combination of the following features:
a) the longitudinal planes (E, F) containing the housing pin bores and core pin bores (50, 52; 54, 56) of the individual rows are inclined in relation to one another at an acute angle (a) converging towards the lock narrow side, the apex of which angle coincides approximately with the axis (0) of the cylinder core and the angle bisector of which coincides approximately with the plane (S) of symmetry of the lock cylinder, which passes through the cylinder core axis (0);
b) the cross-sectional profile of the flat key (26) is branched on the narrow side forming a longitudinal recess (42) and the lock cylinder core (20) comprises a filler rib (44) engaging in the longitudinal recess (42) between the profile branches;
c) the key notches (68, 70) are continued at least in part by blind notches in the other profile branch in each case.
2. Locking device according to claim 1, characterised in that the longitudinal planes (E, F) include with one another an angle (a) of less than 40°, preferably less than 30°.
3. Locking cylinder device according to claim 1 or 2, characterised in that the flat key (26), considered in a cross-section normal to the axis, is thickened by side face zones (32a, 34a) diverging towards the narrow side (38) in a region (40) close to the narrow side (38), and the key passage (22) is correspondingly widened.
4. Locking device according to claim 3, characterised in that the divergent side face zones (32a, 34a) are approximately parallel to the pertinent longitudinal planes (E, F).
5. Locking device according to claim 4, characterised in that the region (40) of the thickening close to the narrow side (38) extends over at most 30%, preferably at most 20%, of the width of the key side faces (32, 34).
6. Locking device according to one of claims 3 to 5, characterised in that the maximum thickening of the flat key (26) amounts to at most 35%, preferably about 30%, compared with the thickness of the envelope rectangle of the flat key in its unthickened region.
7. Locking device according to one of claims 3 to 6, characterised in that the limiting surfaces (46, 48) of the longitudinal recess (42) are substantially parallel to the respectively associated divergent side face zones (32a, 34a) of the flat key.
8. Locking device according to one of claims 1 to 7, characterised by additional pin tumblers (78, 80) which co-operate with level fluctuations (82) on at least one, preferably both side faces (32,34) of the flat key (26).
9. Locking device according to claim 8, characterised in that the additional pin tumblers (78, 80) are springless pin tumblers in the core (20) which co-operate at their radially outer ends with recesses (84) in the internal circumferential surface (18) of the housing bore (16), namely in a manner in which the additional pin tumblers (78, 80) on introduction of a correct flat key (26) into the key passage (22), until liberation of the key passage (22) for the flat key (26) to be introduced, can be pushed out into the pertinent recesses (84) of the internal circumferential surface (18) of the housing bore (16), and in the subsequent rotation of the cylinder core (20) the additional core pins (78, 80) can be pushed radially inwards, by cam-type co-operation with the recesses (84) in the circumferential surface (18) of the housing bore (16), until complete liberation of the rotating movement of the cylinder core (20).
10. Locking cylinder device according to claim 8 or 9, characterised in that the additional tumbler pins (78, 80) stand with their axis substantially perpendicular to the longitudinal central plane (S) of the key passage (22).
11. Locking device according to one of claims 8 to 10, characterised in that the additional pin tumblers (78, 80) are arranged on one side of the key passage (22) in a common plane (Z) parallel to the axis (0) of the cylinder core.
12. Locking device according to claim 11, characterised in that the additional pin tumblers (78, 80) are arranged on both sides of the key passage (22) in a common plane (Z).
13. Locking device according to one of claims 8 to 12, characterised in that the additional pin tumblers (78, 80) are widened in mushroom form at their radially outer ends and in that the core pin bores (79) of the cylinder core (20) are correspondingly stepped.
14. Locking device according to one of claims 8 to 13, characterised in that the additional pin tumblers (78) on the one side of the flat key (26) are offset in the direction of the cylinder core axis (0) in relation to the additional pin tumblers (80) on the other side of the flat key (26).
15. Locking device according to one of claims 8 to 14, characterised in that the additional pin tumblers (78, 80) on both sides of the flat key (26) are offset in the direction of the cylinder core axis (0) in relation to the pin tumbler pairs (58, 62; 60, 64).
16. Locking device according to one of claims 1 to 15, characterised in that within the key passage (22) at least one securing rib (67) extending parallel to the cylinder core axis (O) is provided in such position that the core pins (62, 64) abut on it in radially inward displacement so that they do not lose the guidance in the respective core pin bore (54,56).
17. Locking device according to one of claims 1 to 16, characterised in that the notches (68, 70) of the notch rows - considered in a longitudinal plane (E, F) through the key containing the associated pin tumbler pairs (58, 62; 60, 64) - possess a triangular or trapezium form with flanks (68a, 68b; 70a, 70b) inclined towards one another and possibly a trapezium base (68c, 70c) extending between the flanks (68a, 68b; 70a, 70b).
18. Locking device according to one of claims 3 to 17, characterised in that blocking and guide ribs (28) and blocking and guide grooves (30) are arranged in the flat key (26) and correspondingly in the key passage (22) outside the region (40) close to the narrow side.
19. Locking device according to one of claims 1 to 18, characterised in that the core pins (62, 64) possess at their radially outer ends a dome surface (65) symmetrical in rotation about the core pin axis, and the radius of curvature of this dome surface (65) is only slightly smaller than the radius of the housing bore (16).
20. Locking device according to one of claims 1 to 19, characterised in that the un- notched edge faces of the profile branches, remaining from the key blank, stand perpendicularly to the respective longitudinal plane (E, F) containing the pin tumbler pairs.
21. Locking installation having a plurality of locking devices according to one of claims 1 to 20, characterised in that the locking devices differ from one another:
a) by the location and/or length adaptation of different pin tumbler pairs (58,62) and correspondingly different notch depths of the key (26) and/or
b) by different length, position and/or number of the additional pin tumblers (78, 80) and correspondingly different key configuration and/or
c) by different profiling of the key passages (22) and correspondingly different profiling of the key side faces (32, 34) and/or
d) by different profiling of the filler rib (44) and correspondingly different profiling of the longitudinal recess (42) in the key (26).
22. Locking installation according to claim 21, characterised in that to a group and/or sub-group of locking devices there is allocated a master key which corresponds to the different data of all the individual locks of the group or sub-group.
23. Flat key having the features concerning the key which are stated in one of claims 1 to 22.
EP80103977A 1979-08-03 1980-07-10 Locking device with at least one profiled locking cylinder Expired EP0023604B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80103977T ATE12419T1 (en) 1979-08-03 1980-07-10 LOCKING DEVICE WITH AT LEAST ONE PROFILE LOCKING CYLINDER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2931653 1979-08-03
DE2931653A DE2931653C2 (en) 1979-08-03 1979-08-03 Profile lock cylinder

Publications (2)

Publication Number Publication Date
EP0023604A1 EP0023604A1 (en) 1981-02-11
EP0023604B1 true EP0023604B1 (en) 1985-03-27

Family

ID=6077613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103977A Expired EP0023604B1 (en) 1979-08-03 1980-07-10 Locking device with at least one profiled locking cylinder

Country Status (5)

Country Link
EP (1) EP0023604B1 (en)
AT (1) ATE12419T1 (en)
DE (1) DE2931653C2 (en)
ES (2) ES252349Y (en)
YU (1) YU181280A (en)

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US5050412A (en) * 1985-05-21 1991-09-24 Costruzioni Italiane Serrature Affini C.I.S.A. S.P.A. Flat key cylinder lock with anti-burglar features
DE3542008A1 (en) * 1985-11-28 1987-06-04 Dom Sicherheitstechnik Key for lock cylinders
DE3609473A1 (en) * 1986-03-20 1987-10-01 Winkhaus Fa August LOCKING CYLINDER
DE4000179A1 (en) * 1990-01-05 1991-07-11 Bks Gmbh KEY FOR LOCKING CYLINDERS, ESPECIALLY OF LOCKING SYSTEMS
US5419168A (en) * 1991-10-24 1995-05-30 Medeco Security Locks, Inc. Hierarchical cylinder lock and key system
DE4213592A1 (en) * 1992-04-24 1993-10-28 Heinz Wolter Lock cylinder key
SE505885C2 (en) * 1993-12-30 1997-10-20 Bo Widen Cylinder lock-key combination, key, key blank and lock included in the combination
SE505364C2 (en) * 1993-12-30 1997-08-11 Bo Widen Cylinder lock-key combination, key, key blank and lock
AT405668B (en) * 1995-02-01 1999-10-25 Evva Werke FLAT KEY FOR CYLINDLE LOCK
US5615565A (en) * 1995-09-19 1997-04-01 Medeco Security Locks, Inc. Keys for cylinder locks
US5819567A (en) * 1996-07-19 1998-10-13 International Security Products, Inc. Lock system with key trapping
US5823030A (en) * 1997-01-29 1998-10-20 International Security Products, Inc. Cylinder lock system
HU222964B1 (en) * 1997-10-31 2004-01-28 EVVA-WERK SPEZIALERZEUGUNG von Zylinder- und Sicherheitsschlössern Gesellschaft m.b.H. & Co. KG Cylinder lock and flat key
DE10127472B4 (en) * 2001-06-07 2004-02-19 Aberle Gmbh & Co. Cylinder core for locking cylinders
CN102493714A (en) * 2011-11-18 2012-06-13 夏建国 Idling digital lock and matched flat key thereof

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Also Published As

Publication number Publication date
ES252349U (en) 1981-10-01
ES252349Y (en) 1982-04-01
ES259248U (en) 1982-01-16
ES259248Y (en) 1982-07-01
DE2931653C2 (en) 1982-11-18
EP0023604A1 (en) 1981-02-11
YU181280A (en) 1983-04-30
ATE12419T1 (en) 1985-04-15
DE2931653A1 (en) 1981-02-05

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