EP3228787A1 - Improved lock cylinder - Google Patents

Abstract

The present invention relates to a lock cylinder having a cylinder housing and a cylinder core rotatably mounted in the cylinder housing, wherein the cylinder core has a keyway for insertion of a key in a Schlüsseleinschubrichtung, wherein the lock cylinder further comprises a plurality of tumbler elements which a rotational movement of the cylinder core in the Allow cylinder housing in a respective release position and lock in a respective blocking position, wherein one of the plurality of tumblers is an Axialzuhaltungselement which is completely displaced in its keyed position in its release position, in particular substantially parallel to the Schlüsseleinschubrichtung, with fully inserted in the keyway key wherein the lock cylinder further comprises a locking bar with two relatively movable bar elements, and wherein one of the rod elements of the locking bar there s Axialzuhaltungselement forms. Furthermore, the present invention relates to a locking system and a method.

Description

The present invention relates to a lock cylinder having a cylinder housing and a cylinder core rotatably mounted in the cylinder housing, wherein the cylinder core has a keyway for insertion of a key in a Schlüsseleinschubrichtung, wherein the lock cylinder further comprises a plurality of tumbler elements which a rotational movement of the cylinder core in the Allowing cylinder housing in a respective release position and lock in a respective locking position, wherein the plurality of tumbler elements comprises a Axialzuhaltungselement which is displaced with its fully inserted into the key channel key relative to its locking position substantially parallel to the key insertion direction in its release position. Furthermore, the present invention relates to a locking system with such a lock cylinder and a key. Furthermore, the present invention relates to a method for unlocking a lock cylinder.

The publication WO 03/064795 A1 shows a lock cylinder with a cylinder housing, a rotatably mounted therein cylinder core, which has a keyway for insertion of a key whose rotation is normally locked by means of a rotation joint between the cylinder core and cylinder housing intersecting tumbler. In this case, the tumbler element is designed as a key insertion direction of a blocking in a release position displaceable locking member which cooperates in its displacement of the locking in the release position with a transversely slidable key insertion direction motion transmission member. The motion transmission member is a pin which is engageable by insertion of the key from one of the locking position of the locking part corresponding to non-operative position in a displacement of the locking member in the release position enabling operative position.

Based on this lock cylinder, it is an object of the present invention to provide a lock cylinder that provides at least equivalent security and can be made easier and cheaper.

According to a first aspect of the invention, therefore, there is provided a lock cylinder having a cylinder housing and a cylinder core rotatably mounted in the cylinder housing, the cylinder core having a key channel for inserting a key in a key insertion direction, the lock cylinder further comprising a plurality of tumblers having a key Allowing rotational movement of the cylinder core in the cylinder housing in a respective release position and lock in a respective locking position, wherein one of the plurality of tumblers is an Axialzuhaltungselement which is displaced with its fully inserted into the key channel key relative to its locking position in its release position, wherein the lock cylinder of Further comprising a locking bar with two relatively movable rod elements, wherein one of the rod elements of the locking bar forms the Axialzuhaltungselement.

The "Axialzuhaltungselement" is a tumbler, which is offset from its locking position to its release position substantially parallel or parallel to the key insertion direction. It is therefore offset in the axial direction of the lock cylinder. Therefore, the tumbler element becomes an "axial tumbler" within the scope of the present invention Called application. In its release position, it allows a rotational movement of the cylinder core in the cylinder housing. As explained in detail below, this is made possible by the fact that it can escape in the release position upon rotation of the cylinder core in the cylinder housing in a receiving recess of the cylinder core. The Axialzuhaltungselement is a rod element of a locking bar. The locking rod has two relatively movable rod elements. In particular, it becomes possible in this way, as will be described in more detail below, to design the locking bar in such a way that, for example, an automated assembly is made possible. In particular, the rod elements may be identical. Furthermore, the rod elements may have a rotationally symmetrical cross section. While previously a locking bar was provided which had to be supported by a spring on a wall of the cylinder core, now the two rod elements can be supported relative to each other moved. This makes it possible to provide the locking bar as a prefabricated component arrangement, which makes the installation easier and significantly reduces or eliminates the risk of losing individual parts of the arrangement. The simpler production and due to the rotational symmetry of the elements involved lower tooling costs make the production and assembly overall more cost effective.

The lock cylinder can have exactly one Axialzuhaltungselement. But the lock cylinder can also have more than one Axialzuhaltungselement. The plurality of tumbler elements thus has at least one Axulzuhaltungselement. In other words, at least one of the plurality of tumbler elements is an axial tumbler element. If a plurality of Axialzuhaltungselementen provided exactly one of Axialzuhaltungselemente may be formed by a rod member of the locking bar. It can, if a plurality of Axialzuhaltungselementen is provided, but also several or all of these Axialzuhaltungselemente be formed by a rod member of a locking bar. It can also be provided a plurality of locking rods in the lock cylinder, of which in each case exactly one rod element or each of which a plurality of rod elements each form an Axialzuhaltungselement.

According to a further aspect, a locking system with a key and with a lock cylinder according to the first aspect of the invention or one of its embodiments is provided.

Accordingly, this locking system has the same advantages as the lock cylinder according to the first aspect of the invention.

According to a third aspect, a method for unlocking a lock cylinder with a cylinder housing and a cylinder housing rotatably mounted in the cylinder housing is proposed, wherein the cylinder core has a keyway for insertion of a key in a Schlüsseleinschubrichtung, wherein the lock cylinder further comprises a plurality of tumbler elements, the allow a rotational movement of the cylinder core in the cylinder housing in a respective release position and lock in a respective locking position, wherein one of the plurality of tumbler elements is an Axulzuhaltungselement, and wherein the lock cylinder further comprises a locking rod with two relatively movable rod elements, wherein one of the rod elements of the Locking rod forms the Axialzuhaltungselement, wherein the key is fully inserted into the keyway and thereby, in the case of a Schließber with respect to this feature key, the axial tumbler element is moved from its locking position substantially parallel to the key insertion direction, in particular parallel to the key insertion direction, relative to the other rod member in its release position.

In particular, it can be provided that the rod elements are identical and rotationally symmetrical. The rod elements are then offset relative to each other parallel to their rotational symmetry axis. In other words, instead of an offset of the Axialzuhaltungselements parallel to the Schlüsseleinschubeinrichtung relative to the other rod member are also spoken of that the key is fully inserted into the keyway and thereby the Axialzuhaltungselement parallel to its axis of rotational symmetry from a locking position relative to the other rod member in its release position is offset.

The method thus has the same advantages as has been carried out for the aforementioned lock cylinder according to the first aspect. In particular, a structure is provided in this way while maintaining safety, which enables the method for unlocking with reduced risk of tilting and / or jamming of an involved spring element. By arranging, as will be explained in more detail below, a spring element between the two rod elements, the resilient movement can be provided in a more secure manner.

The object initially posed is therefore completely solved.

In one embodiment, it may be provided that the lock cylinder further has a movement transmission element movable transversely to the key insertion direction, which interacts with the key and with the axial tumbler element in order to displace the axial tumbler element essentially parallel to the key insertion direction, in particular parallel to the key insertion direction ,

In this way, it becomes possible to set up a force deflection by means of the motion transmission element, which initially moves the motion transmission element transversely to the key insertion direction, for example by the complete insertion of the key. The key can, for example, act on one end of the motion transmission element. At an opposite end of the motion transmission element, in turn, a cooperation with the Axialzuhaltungselement done and this in turn be parallel or substantially parallel to the Schlüsseleinschubrichtung. In this way, by means of the motion transmission element twice a force deflection by about 90 ° take place, so that the Axialzuhaltungselement is offset substantially parallel to the key insertion direction.

In a further embodiment it can be provided that the motion transmission element is designed as a pin.

In this way, the motion transmission element can be provided in a constructive simple manner.

In a further embodiment it can be provided that the plurality of tumbler elements has at least one further tumbler element. It can be provided that at least one of the further tumbler is offset relative to its locking position transversely to the key insertion direction in the release position when fully inserted into the keyway key.

In such Zuhaltungselementen may, for example, be a core pin of a pin tumbler. Furthermore, it may, for example, be a profiled pin which cooperates with indentations on a shank of the key. In this way, the safety of the entire lock cylinder can be further increased.

In a further embodiment it can be provided that the two rod elements of the locking rod are supported by means of a spring element to each other.

In this way it is possible that the Axialzuhaltungselement or that the Axialzuhaltungselement forming rod member may be biased in its locking position spring. It is supported by means of the spring element on the other rod member. Spacing the Axialzuhaltungselements in the release position then causes a compression of the spring element. This then stores elastic return energy. If the key is withdrawn from the lock cylinder, then the Axialzuhaltungselement can be returned by means of the stored spring energy back into the locked position. The other of the rod elements can be supported on the cylinder core. In the rod elements, however, suitable contact surfaces for the spring element can be provided, so that its operation is associated with only a small risk of tilting or improper compression of the spring element.

In a further embodiment it can be provided that the spring element is a helical spring.

By means of such a helical spring, the desired spring effect can be provided particularly simple and at the same time simplifies the assembly of the spring element become. Basically, however, other spring elements are conceivable, for example. A disc spring or an element made of an elastic material.

In a further embodiment of the lock cylinder can be provided that each rod member has an outer circumferential groove in which the spring element is mounted.

In particular, a combination with a coil spring can be provided for a particularly simple assembly. For example, the coil spring may be hooked or inserted with its respective open ends into such an outer peripheral groove of the rod member. At the same time it is provided so that the spring element holds the two rod elements together. The locking bar is then a pre-assembled assembly that can be mounted automatically.

In a further embodiment it can be provided that the Axialzuhaltungselement is biased by the spring element in its locking position.

The spring element thus has an almost relaxed position in the locked position. If the Axialzuhaltungselement offset from the locked position to the release position, the spring element is tensioned. A provision from the release position to the locked position then takes place by relaxing the spring element.

In a further embodiment it can be provided that the locking bar has a guide pin which extends into each of the two rod elements and a movement of the two rod elements relative to each other.

In this way it is ensured that the rod elements are moved relative to each other parallel to a longitudinal axis of the guide pin. The spring element, in particular the spring element designed as a helical spring, can then extend around the guide pin between the rod elements. In this way it is further ensured that the spring element can not be lost. The rod elements are then held together by the spring element and in their position and Movement to each other determined by the guide pin. All elements of the locking bar are thus mounted firmly together as an assembly, which allows a preassembled delivery of the locking bar in the form of several locking rods as bulk material. It is almost impossible in this way that individual elements of a lock bar are lost.

In a further embodiment it can be provided that the two rod elements are identical. In particular, each rod element can be constructed rotationally symmetrical.

In this way, the production of the locking bar is further simplified and is less expensive. In addition, the installation of the locking bar is simplified. With identical design, both rod elements are identical components, which keeps the tool costs low. Also, the pre-assembly of the locking bar error-prone, since it is impossible to mount wrong rod elements together. In the rotationally symmetrical structure, moreover, the assembly in the lock cylinder can be simplified, since due to the rotationally symmetrical structure of the entire locking rod assembly does not have to maintain a certain position.

In a further embodiment of the lock cylinder can be provided that the Axialzuhaltungselement rests in its locking position on a stage of a receiving recess of the cylinder core, and wherein the Axialzuhaltungselement protrudes radially in its blocking position beyond the cylinder core into a locking groove of the cylinder housing. The term "radial" refers to the axis of rotation of the cylinder core in the cylinder housing. In this way, the locking rod is partially disposed in the receiving recess in the locking position. However, the Axialzuhaltungselement, due to the bias of the spring element, is located on a stage of the receiving recess. Thus, upon rotation of the cylinder core, the axial locking element can not slide radially inwardly into the receiving recess, but jams, resting on the step, with an edge of the locking groove of the cylinder housing. In this way, a blockage of the cylinder core is achieved relative to the cylinder housing over a relatively large axial distance.

In a further embodiment it can be provided that the Axialzuhaltungselement is offset in its release position relative to the stage, so that it can escape radially inwardly by sliding on the formed in the cylinder housing locking groove in the receiving recess.

In this way, in the release position of the cylinder core relative to the cylinder housing can be rotated. The locking bar then slides on the locking groove and deviates radially inwardly into the receiving recess.

In a further embodiment it can be provided that one of the two rod elements forms the Axialzuhaltungselement and the other of the two rod elements is located at a head end of a transversely displaceable to the key insertion direction tumbler pin or rests.

In this way, the lock cylinder can be further formed safety critical. In particular, it can be provided that the other of the two rod elements is pressed at a not properly formed key of the transversely displaceable to the key insertion direction tumbler pin radially outwardly into the locking groove of the cylinder housing. In this way, a blocking of the cylinder core relative to the cylinder housing is then provided over a longer axial distance, so that a violent rotation of the cylinder core can be prevented.

In a further embodiment it can be provided that the Axialzuhaltungselement is obliquely controlled by the motion transmission element.

In this way, a force deflection of 90 ° can be provided in a particularly simple manner. For this purpose, both the motion transmission element and the Axialzuhaltungselement have a conical tip. These conical tips then abut each other, so that the oblique flanks can bring about a conversion of the direction of movement.

In a further embodiment, it may be provided that a conical tip of the motion transmission element forms a sliding surface on which an oblique control edge of the Axialzuhaltungselements can slide, when a radially inwardly directed force acts on the Axialzuhaltungselement upon rotation of the cylinder core.

In this way, a release position may be provided that the Axialzuhaltungselement safely slides off the tip of the motion transmitting member over an edge of the step and evades into the receiving recess.

In a further embodiment, in particular of the method, it can be provided that the lock cylinder further comprises a motion transmission element movable transversely to the key insertion direction, which interacts with the key and with the Axialzuhaltungselement to the Axialzuhaltungselement by the complete insertion of the key substantially parallel to the Set the key insertion direction in the release position.

As a result, similar advantages, as already described above, provided. By means of the motion transmission element, a force in the direction of the key insertion direction can first be transversely transposed to the key insertion direction and then in turn be deflected parallel or substantially parallel to the key insertion direction for displacing the axial tumbler element.

It may be provided that the key has a key shaft extending along a longitudinal direction with two key broadside faces, the key shank having a recess through the key broadside faces, a rod extending through the recess, and the rod being non-rotatably mounted in the key shank, and wherein in the recess at least two rings are arranged on the rod next to each other, wherein an inner diameter of each ring is greater than an outer diameter of the rod.

Furthermore, the key may have exactly two rings, in particular wherein the rings are arranged adjacent to each other on the rod. The rings can be identical be formed, in particular have an identical shape and dimensions. The rings may each be formed symmetrically to a rotational symmetry axis, and may be formed asymmetrically relative to a plane perpendicular to the rotational axis of symmetry ring center plane, in particular wherein an outer peripheral surface of the ring is formed asymmetrically to the ring center plane. The recess may be arranged symmetrically to a perpendicular to the key broad side surfaces and parallel to a longitudinally extending center plane of the key shaft.

The rings may be arranged symmetrically to a median plane of the key shaft extending perpendicular to the key broad side surfaces and parallel to the longitudinal direction. In each case one of the two rings can be arranged on each side of a perpendicular to the key broad side surfaces and parallel to the longitudinal direction extending median plane of the key shaft. The rings can be arranged in mirror image to each other on the rod. The recess may be dimensioned such that the rings are guided perpendicular to the key broad side surfaces and rotatable on the rod.

A width of the recess may be slightly larger than an overall width of the juxtaposed rings, so that a guided by the recess and the respective other ring movement of each ring is perpendicular to the Schlüsselbreitseitenflächen possible, in particular, a length of the recess parallel to the longitudinal direction slightly larger be as a respective outer diameter of the rings. The rod may be parallel to the key broadside faces in the key shank. The key shank may have at least one longitudinal groove running parallel to the longitudinal direction in at least one of the key broadway side surfaces.

The key shank can have at least one depression for querying a profiled pin in at least one of the key broadside faces. The recess may be arranged in a key head facing away front third of the key shaft. The key can be designed as a reversible key.

The rod may extend through the entire key shank, the key shank having two opposite key narrow side surfaces, and each key narrow side surface having an opening for press-fitting the rod. An outer diameter of each ring may be greater than a distance between the key wide-side surfaces. The key shank may have at least one tip recess in at least one of the key broadside side surfaces, wherein the at least one tip depression adjoins the recess.

It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.

Fig. 1

eine symmetrische Explosionsansicht eines Schließsystems und der Elemente eines Schließzylinders,

Fig. 2

Elemente des Schließzylinders in einer isometrischen Darstellung in einer Sperrposition,

Fig. 3

den Schließzylinder in einer Sperrposition und den Schlüssel zu Beginn des Einführens des Schlüssels in den Schlüsselkanal,

Fig. 4

eine Position der Elemente der Fig. 3, wenn der Schlüssel nahezu vollständig in den Schlüsselkanal eingeschoben ist,

Fig. 5

eine Position der Elemente der Fig. 3, wenn der Schlüssel vollständig in den Schlüsselkanal eingeschoben ist,

Fig. 6

eine vergrößerte und vereinfachte Darstellung der wesentlichen für das Versetzen des Axialzuhaltungselements wirkenden Elemente,

Fig. 7

eine Darstellung der Elemente der Fig. 3, wie sie ein Rotieren des Zylinderkerns in dem Zylindergehäuse ermöglichen,

Fig. 8

eine isometrische Darstellung der Elemente des Schließzylinders in einer der Fig. 7 entsprechenden Lage,

Fig. 9

eine vergrößerte Einzeldarstellung eines Stangenelements,

Fig. 10

eine vergrößerte Einzeldarstellung eines Bewegungsübertragungselements,

Fig. 11

verschiedene Ansichten einer Ausgestaltung einer Sperrstange,

Fig. 12

ein schematisches Ablaufdiagramm eines Verfahrens.

Embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description. Show it:

Fig. 1

a symmetrical exploded view of a locking system and the elements of a lock cylinder,

Fig. 2

Elements of the lock cylinder in an isometric view in a locked position,

Fig. 3

the lock cylinder in a locked position and the key at the beginning of the insertion of the key in the key channel,

Fig. 4

a position of the elements of Fig. 3 when the key is almost completely inserted into the keyway,

Fig. 5

a position of the elements of Fig. 3 when the key is fully inserted into the keyway,

Fig. 6

an enlarged and simplified representation of the essential elements acting for the displacement of the Axlezuhaltungselements,

Fig. 7

a representation of the elements of the Fig. 3 how they allow a rotation of the cylinder core in the cylinder housing,

Fig. 8

an isometric view of the elements of the lock cylinder in one of Fig. 7 appropriate location,

Fig. 9

an enlarged detail of a rod element,

Fig. 10

an enlarged detail view of a motion transmission element,

Fig. 11

different views of an embodiment of a locking bar,

Fig. 12

a schematic flow diagram of a method.

Fig. 1 shows a symmetrical exploded view of a locking system 100. The locking system 100 has a lock cylinder 10 and a key 18.

The key 18 has in the illustrated embodiment a key head 20 which serves as a handle for gripping and turning the key. Furthermore, the key 18 has a key shank 22 which is inserted into the lock cylinder 10. In the illustrated embodiment, the key 18 is formed as a flat key and a reversible key. However, this does not necessarily have to be the case. Other geometric configurations of key shank 22 are possible, such as asymmetrical configurations that do not provide reversible key functions.

The lock cylinder 10 has a cylinder housing 12. In the illustrated embodiment, it is the cylinder housing 12 is a profile cylinder, which is formed in a conventional standard profile. In the illustrated embodiment, the cylinder housing 12 is formed as a cylinder housing of a double cylinder. This means that basically two cylinder cores 16 are insertable, for example, to provide on the door from both sides with a safety-relevant closing function. However, this is not necessarily the case. Instead of a double cylinder, for example, a half-cylinder or another cylindrical shape is conceivable. Furthermore, it can be provided, for example, that the cylinder housing 12 has the shape of a padlock or the like. In the illustrated embodiment, the cylinder housing 12, for example, a bore 14 to attach the cylinder housing 12 fixed in a door.

A cylinder core is indicated generally at 16. Not shown is, for example, an actuator which is coupled to the cylinder core 16 and rotates together with the cylinder core 16 when it is locked. By means of the actuating element can then be acted example. On a lock to open a door.

The cylinder core 16 is basically rotatable in the cylinder housing 12. The rotation of the cylinder core 16 then acts on the actuating element, not shown, on the lock and opens, for example, a door. The turning of the cylinder core 16 in the cylinder housing 12 is locked with the key 18 but by means of several tumblers. For this purpose, the tumblers tumble elements that extend in a locked position via a rotary joint between the cylinder core 16 and the cylinder housing 12 and lock the cylinder core 16 in this way. In a release position, the fulcrum between the cylinder core 16 and the cylinder housing 12 free of tumbler elements, so that a free rotation of the cylinder core 16 in the cylinder housing 12 by means of the handle 20 of the key 18 is possible.

Schematically, several pin stops in the form of core pins 28 and associated housing pins 24 are shown with associated spring elements 26 of the housing pins. These all interact with the key 18 in such a way that in a release position a parting plane between the housing pins and the core pins positioned so that the cylinder core 16 can be rotated with the core pins 28.

The core pins 28, the housing pins 24 with associated spring elements 26 thus form further tumblers 30, which are offset between their release position and its locking position transversely to an insertion direction of the key 18 in the lock cylinder 16.

Further elements of the lock cylinder 10, which are explained in more detail below, are two long profile pins 32 and 34 and a short profile pin 36. These are also brought by the key shank 22 in release positions. The short profile pin 36 also leads together with a locking bar 38. Furthermore, the locking rod 38 acts as a further tumbler. These serve, in particular, to lock a rotation of the cylinder core 16 with respect to the cylinder housing 12, possibly at the longer regions of the axial direction. A motion transmitting member 40 is further provided. This is designed as a pin and serves to be actuated by the key 18 and offset transversely to a key insertion direction to, as will also be explained in more detail below, thereby act on the locking rod 38 by means of a conical tip, so that a rod member of Locking rod 38 in the axial direction, ie offset substantially parallel to a key insertion direction. Further profile pins are identified as a group by the reference numeral 42. These can cooperate with lateral recesses on the key shank 22 and also provide further tumblers here.

Furthermore, a deflection pin is designated by the reference numeral 44. This serves in particular to deflect against movable elements of the key shaft 22 of the key 18 during the complete insertion of the key 18.

The key 18 may in particular be a key, as described in the German patent application no. 10 2015 111 914.5 the applicant is described. However, this is not absolutely necessary. It could also be another key. In particular, it may be such a key that is adapted to act on the motion transmitting member 40 such that it translates transversely to an insertion direction of the key 18.

The Fig. 2 shows various elements of the lock cylinder with the key removed. The locking rod 38 is in a blocking position, which is designated as 58 in total.

Shown is the cylinder core 16 in a cutaway view. The key is not inserted in the cylinder core 16. A key channel of the cylinder core 16 is designated by the reference numeral 54. A key insertion direction is designated by reference numeral 56.

Shown are the deflection pins 44 already mentioned above. Shown are a deflection pin 44 and an oppositely arranged deflection pin 44 '. These turning pins cooperate with movable elements of the key 18 to actuate the illustrated core pin 28 and the motion transmitting member 40. Below, in particular, the deflection pin 44 and the actuation of the motion transmission element 40 are important. The profile pins 32 and 34 cooperate with recesses in the key. These will be discussed in more detail below. Furthermore, the motion transmission element acts on the locking bar 38. The locking bar 38 has an axial locking element 48. In the illustrated locking position, the Axialzuhaltungselement protrudes radially beyond a radial outer surface of the cylinder core 16. This will be explained again in the following Fig. 3 clarified. The locking bar 38 has a further rod element 50. In the illustrated embodiment, the Axialzuhaltungselement 48 and the further rod member 50 are identical. Both are rotationally symmetric and have a conical tip. A spring element 52, which is formed in the illustrated embodiment as a helical spring, supports the rod elements 48 and 50 from each other and is connected thereto. The spring member 52 biases the Axialzuhaltungselement 48 in the illustrated locked position. For this purpose, it pushes the rod elements 48 and 50 apart. The rod member 50 is supported on a cylinder core 16 so that the axial-locking member or rod member 48 is pushed out against the movement-transmitting member 40 and radially outward beyond the cylinder core 16.

The Fig. 3 shows the position of the Fig. 2 in a side-sectional view of the cylinder core 16 and the cylinder housing 12. Also shown is a parting plane 64 between the cylinder core 16 and the cylinder housing 12, with respect to the Bar 38 and with respect to the profile pins 34 and 32 is relevant. Identical elements are furthermore identified by the same reference symbols and will therefore not be explained again below.

With regard to the key 18, a key shaft 62 can be seen. On this key shaft 62, two rings 60 and 61 are arranged. These rings are deflected by the deflection pins 44, 44 'at the end of the keyway 54 and in turn act on the core pin 28 such that it presses the housing pin 24 down and a dividing plane between the housing pin 24 and the core pin 28 exactly on the parting plane between the cylinder core and cylinder housing 12 is located. On the other hand, the motion transmitting member 40 is actuated and displaced upward in the direction of the parting plane 64. In this case, this acts on the Axialzuhaltungselement 48 a. This process was explained in more detail below in more detail.

In the illustrated blocking position 58, the Axialzuhaltungselement 48 rests on a step 68 of a receiving recess 66. As a result, it projects beyond the parting plane 64 into a locking groove 70 of the cylinder housing 12. Rotation of the cylinder core 16 in the cylinder housing 12 is thus blocked. Axialzuhaltungselement 48 is biased in the locked position 58. The rod element 50 bears against the cylinder core 16. The spring member 52 pushes the rod member 50 and the Axialzuhaltungselement 48 apart. This then results in the Fig. 3 shown location.

The profile pin 36 as well as the profile pins 34 and 32 take the position shown with a removed key. In the Fig. 3 shows the direction of gravity down. The profile pins 32, 34, 36 thus occupy the position shown in the cylinder core 16.

In the Fig. 4 the key 18 is shown in an advanced position. The key is almost completely inserted into the closing channel.

The ring 60 of the key 18 also faces up, the ring 61 of the key still points down. This position is taken by the rings just before they are deflected by the deflecting pins 44, 44 'in opposite directions, ie the ring 60 after below and ring 61 upwards. Identical elements are further identified with the same reference numerals and will not be explained again.

In the key 18, three recesses 74, 76 and 78 are indicated. These interact with the three profile pins 32, 34 and 36 together. As can be seen in the illustrated positioning, an element that does not have these recesses 74, 76, 78 and is inserted into the keyway causes the profile pins 32, 34, and 36 to be forced upwardly by such an element. As a result, the profile pins 32 and 34 are above the parting plane 64 in the locking groove 70. Furthermore, the profile pin 36 of the rod element 50 of the locking rod 38 pushes upward, so that this also partially protrudes into the locking groove 70. In this way, over a long axial length by means of the elements 48, 50, 34 and 32, a blocking of the rotational movement of the cylinder core 16 relative to the cylinder housing 12 is provided. In particular, if by means of an inserted into the key channel element a violent rotation of the cylinder core 16 is to be effected, thus enters a particularly strong backup of the arrangement.

In the Fig. 5 the key 18 is now fully inserted in the keyway. The ring 60 is deflected by the deflection pin 44 'down and pushes the core pin 28 against the housing pin 24 down. The parting plane between the core pin 28 and the housing pin 24 is now such that the cylinder core 16 could be rotated. Furthermore, the motion transmitting member 40 is pushed up by the ring 61 which is deflected by the deflecting pin 44. The motion transmitting member 40 acts on the Axialzuhaltungselement 48 a. The spring element 52 is compressed. Axialzuhaltungselement 48 thus moves "axially", ie substantially parallel to the insertion direction 56 of the key 18. In particular, the Axialzuhaltungselement 48 moves away from the step 68. Although in the illustrated position, a portion of the Axialzuhaltungselements 48 is still above the parting plane 64, in a rotation of the cylinder core, however, since it is moved away with the step 68 forward, dodge radially inwardly into the receiving recess 66.

Furthermore, it can be seen that the parting plane depressions 74, 76, 78 cooperate with the profiled pins 32, 34 and 36, which thus fall back down into its release position, or slide over the locking groove and be moved into this. The Profile pins 32 and 34 are thus now again radially inward of the parting plane 64. Furthermore, the rod member 50 can move back into its release position. The receiving recess 66 is thus completely released and is not partially occupied by the profile pin 36.

The Fig. 6 shows again the representation of the Fig. 5 with the elements involved with respect to the locking bar 38. The key 18 is fully inserted as described in the keyway. The deflecting pin 44 deflects the ring 61 upwards. In this way, the motion transmitting member 40 is displaced upward. Via an inclined edge control, this presses the axial locking element 48 and moves it against the spring force of the spring element 52 towards the rod element 50, which is supported on the cylinder core 16. This movement is further guided by a guide pin 72 explained in more detail below. In this position, a rotation of the cylinder core 16 is already possible, so that the release position 80 is reached.

The Fig. 7 shows a position such as the blocking rod 38 can then take during the rotation of the cylinder core 16. Upon rotation of the cylinder core, the circular outer cross section of the rod elements 48, 50 contacts an edge of the locking groove 70. However, due to the positioning in the release position 80, the axial locking element 48 with its conical tip can escape on the motion transmission element 40 and the step 68 into the receiving recess 66. As can be seen, then the profile pins 32, 34 and the locking rod 38 are located radially within the parting plane 64, so that the cylinder core 16 can be rotated in the cylinder housing 12.

The Fig. 8 shows the in the Fig. 7 shown position of the elements again in an isometric cutaway view corresponding to that of Fig. 2 ,

As can be seen, the locking bar 38 can completely escape into the receiving recess 66, so that the cylinder core 16 can be rotated.

The Fig. 9 shows a side view and a cross-sectional view along the section line AA of the rod members 48, 50 of the locking bar 38. The rod members 48, 50, ie Axialzuhaltungselement 48 and the other rod member 50 are formed identically in the illustrated embodiment. The rod member 48, 50 is rotationally symmetrical. It has an inner recess 84 into which a guide pin, which will be explained below, is introduced. Furthermore, the rod element 48, 50 has a conical tip 82. By a flank of the apex, the rod member 48, 50 slide on both the motion transmitting member 40 and the step 68 in the receiving recess 66 to evade upon rotation of the cylinder core 16.

Furthermore, an outer circumferential groove 86 is provided. One end of the spring element 52 designed as a helical spring can be attached to this outer circumferential groove 86, e.g. glued in this or hooked with a turn. In this way, the spring element 52 can hold the rod elements 48, 50 together.

In the Fig. 10 an embodiment of the motion transmission element 40 is shown. An angle at the foot of the motion transmission element is indicated by the reference numeral 92 and may, for example, be 70 °. The head of the motion transmitting member 40 is provided with a two-stage angle to facilitate sliding of the Axulzuhaltungselements 48. Therein, a first head region 91 is provided, which tapers at an angle of 60 °. This angle is indicated by the reference numeral 90. Furthermore, a second head region 89 is provided, the flanks of which enclose with each other an angle 88 which is 80 °.

The Fig. 11 shows various views of the locking bar 38. In particular in the cross section AA can be seen that the spring element 52 in the respective Außenumfangsnut 86, 86 'of the rod members 48, 50 is glued or hooked. The spring element 52 is designed as a helical spring. A guide pin 72 extends from the inner recess 84 of the rod member 48 in the inner recess 84 'of the rod member 50. In this case, the guide pin 72 extends through the spring element 52 therethrough. In this way, the locking rod 38 is formed as a pre-assembled component. It is rotationally symmetrical with respect to the rotational symmetry axis designated by the reference numeral 73. In this respect, the locking bar 38 mounted be maintained without certain specifications regarding the position about a rotational symmetry 73 or its orientation along the rotational symmetry 73. This means that the rod elements 48, 50 could also be installed interchanged, but the locking rod 38 still fulfills its function. By means of the guide pin 72, the rod elements 48, 50 are held in position relative to each other. The relative movement between the rod elements 48, 50 is guided by the guide pin 72. Thus, the direction of the spring force is determined as a spring element 52. This is loaded alone on train and pressure in the direction of the rotational axis of symmetry 73.

The Fig. 12 shows a schematic flow diagram of a method 200. The method is used to unlock a lock cylinder 10. In this case, first in a step 210, a key is fully inserted into a keyway of the lock cylinder. The lock cylinder has a cylinder housing and a cylinder core rotatably mounted in the cylinder housing, wherein the cylinder core has a keyway for insertion of the key in a Schlüsseleinschubrichtung, wherein the lock cylinder further comprises a plurality of tumblers, the rotational movement of the cylinder core in the cylinder housing in a enable respective release position and lock in a respective lock position.

The plurality of tumbler elements has an axial tumbler element, wherein the lock cylinder further comprises a locking bar with two rod elements movable relative to each other. One of the rod elements of the locking bar forms the Axialzuhaltungselement. If the key is fully inserted into the keyway, the Axialzuhaltungselement is thereby offset from its locking position substantially parallel to the key insertion direction relative to the other rod member in a release position.

In step 220, the fully inserted key displaces a motion transfer member 40 transverse to the key insertion direction. Thereby, in a step 230, the Axialzuhaltungselement is offset relative to the other rod member 50. This offset is essentially parallel to the key insertion direction. In a step 240, the cylinder core 16 can now be rotated relative to the cylinder housing 12. Axialzuhaltungselement 48 in common with the entire locking bar 38 differs in a receiving recess 66 in the cylinder core 16 from.

Claims (18)

Locking cylinder (10) having a cylinder housing (12) and a in the cylinder housing (12) rotatably mounted cylinder core (16), wherein the cylinder core (16) has a keyway (54) for insertion of a key (18) in a key insertion direction (56) wherein the lock cylinder (10) further comprises a plurality of tumbler elements (24, 28, 32, 34, 26, 42, 48, 50) which permit rotational movement of the cylinder core in the cylinder housing (12) in a respective release position (80). allow and lock in a respective locked position (58), wherein one of the plurality of tumbler elements (24, 28, 32, 34, 26, 42, 48, 50) is an axial tumbler (48) which is fully inserted into the keyway (54). inserted key (18) is offset relative to its locking position (58) in its release position (80), in particular substantially parallel to the key insertion direction (56), and characterized in that the lock cylinder (10) of the Wei a locking bar (38) with two relatively movable bar members (48, 50), and wherein one of the rod elements (48, 50) of the locking bar (38) forms the Axialzuhaltungselement (48). The lock cylinder (10) of claim 1, characterized in that the lock cylinder (10) further comprises a motion transfer member (40) movable transversely of the key insertion direction (56) and cooperating with the key (18) and the axial tumbler member (48). to offset the Axialzuhaltungselement (48) substantially parallel to the Schlüsseleinschubrichtung (56). Lock cylinder (10) according to claim 2, characterized in that the motion transmission element (40) is designed as a pin. Locking cylinder (10) according to one of claims 1 to 3, characterized in that the plurality of tumbler elements (24, 28, 32, 34, 26, 42, 48, 50) at least one further tumbler element (24, 28, 32, 34, 26, 42, 48, 50), in particular wherein at least one of the further tumbler elements (28) is displaced relative to its blocking position (58) transversely to the key insertion direction (56) into the release position (80) when the key (18) is fully inserted into the keyway (54). Lock cylinder (10) according to one of claims 1 to 4, characterized in that the two rod elements (48, 50) of the locking rod (38) by means of a spring element (52) are supported against each other. Lock cylinder (10) according to claim 5, characterized in that the spring element (52) is a helical spring. Lock cylinder (10) according to claim 5 or 6, characterized in that each rod element (48, 50) has an outer circumferential groove in which the spring element is mounted. Locking cylinder (10) according to one of claims 5 to 7, characterized in that the Axialzuhaltungselement (48) by means of the spring element (52) is biased in its locking position (58). Locking cylinder (10) according to one of claims 1 to 8, characterized in that the locking bar (38) has a guide pin (72) which extends into each of the two rod elements (48, 50) and a movement of the two rod elements (48 , 50) relative to each other. Lock cylinder (10) according to one of claims 1 to 9, characterized in that the two rod elements (48, 50) are identical. Locking cylinder (10) according to one of claims 1 to 10, characterized in that the Axialzuhaltungselement (48) rests in its locking position (58) on a step (68) of a receiving recess (66) of the cylinder core, and wherein the Axialzuhaltungselement (48) protrudes in its blocking position (58) radially beyond the cylinder core (16) out into a locking groove (70) of the cylinder housing (12). Locking cylinder (10) according to claim 11, characterized in that the Axialzuhaltungselement (48) in its release position (80) is offset relative to the step (68) so that it radially inwardly by sliding on the in the cylinder housing (12) formed Lock groove (70) can escape into the receiving recess (66). Locking cylinder (10) according to one of claims 1 to 12, characterized in that one of the two rod elements (48, 50) forms the Axialzuhaltungselement (48) and the other of the two rod elements (48, 50) at a head end of a transversely to the key insertion direction (56) displaceable tumbler pin (36). Lock cylinder (10) according to one of claims 1 to 13, characterized in that the Axialzuhaltungselement (48) of the motion transmission element (40) is inclined edge-controlled. Locking cylinder (10) according to one of claims 1 to 14, characterized in that a conical tip of the motion transmission element (40) forms a sliding surface on which an oblique control edge of the Axialzuhaltungselements (48) can slide, when a rotation of the cylinder core a radially to Inwardly directed force on the Axialzuhaltungselement (48) acts. Locking system (100) with a lock cylinder according to one of claims 1 to 15 and a bowl (18). Method for unlocking a lock cylinder (10) having a cylinder housing (12) and a cylinder core (16) rotatably mounted in the cylinder housing (12), the cylinder core (16) having a keyway (54) for inserting a key in a key insertion direction (56) wherein the lock cylinder (10) further comprises a plurality of tumbler elements having a Allowing rotational movement of the cylinder core in the cylinder housing (12) in a respective release position (80) and lock a respective locking position (58), wherein one of the plurality of tumbler elements is a Axulzuhaltungselement (48), and wherein the lock cylinder (10) further comprises a Locking bar (38) having two bar members (48, 50) movable relative to each other, one of the bar members (48, 50) of the bar (38) forming the axial bar (48), characterized in that the key (18) is fully inserted into the bar Keyway (54) is inserted and thereby the Axialzuhaltungselement (48) from its locking position (58) is displaced relative to the other rod member in its release position (80), in particular substantially parallel to the key insertion direction (56). A method as claimed in claim 17, characterized in that the lock cylinder (10) further comprises a motion transfer member (40) movable transversely of the key insertion direction (56), cooperating with the key (18) and with the axial retention member (48) about the axial retention member (48) by the complete insertion of the key substantially parallel to the key insertion direction (56) in the release position (80).

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