ES2843791T3 - Lock device - Google Patents

Abstract

Core extension (60), in particular a core extension (60) for a lock core (8) of a lock cylinder (100) extending essentially in an axial direction (Z) to axially extend a lock core (8), wherein the core extension (60) is constructed in several parts and comprises at least one extension piece (65) and at least one pressure piece (61) contiguous in the axial direction (Z), where The extension piece (65) has an eccentric pressure piece housing (66) for receiving the pressure piece (61), wherein the pressure piece (61) is at least partially received and / or can be received to realize an interaction between the pressure piece (61) and the extension piece (65), wherein the extension piece (65) has coupling means (72) for connection to the corresponding coupling means (72) of the core of lock (8), where the coupling means form a point of predetermined breakage of the core extension, wherein the extension piece (65) has at least one locking recess (93) that extends transversely to the axial direction (Z) for interaction with a locking mechanism (90) , in particular to receive a latch (93b), wherein the coupling means of the lock core (8) and the extension piece (65) are designed for an axial coupling and here for a bolt connection, so that this way an at least positive connection is made.

Description

DESCRIPTION

Lock device

The invention relates to a core extension, in particular a core extension for a lock core of a lock cylinder extending essentially in an axial direction to axially extend a lock core, according to claim 1.

The invention also relates to an extended lock core, in particular an extended lock core for a lock cylinder of a cylinder lock, comprising at least one lock core unit and at least one core extension, according to with claim 2.

The invention further relates to an anti-snap lock cylinder, in particular an anti-snap lock cylinder for a cylinder lock, with at least one lock core and a cylinder housing in which the lock core is housed. , the cylinder housing having at least one predetermined breaking point according to claim 4.

Furthermore, the invention relates to a lock device comprising at least one key and at least one lock core corresponding thereto and / or a corresponding lock cylinder according to claim 11.

The invention also relates to a method for the anti-snap fixing of a lock cylinder according to claim 12.

Last but not least, the invention relates to a method for producing an anti-snap lock cylinder according to claim 13.

Lock cores, lock core extensions, lock cylinders, cylinder locks, keys or the like and the processes for their manufacture are generally known from the state of the art. Such components are also known in the anti-snap field. Known anti-snap lock cylinders provide for material reinforcement or pre-storage of the predetermined breaking point in front of the screw hole in the front part.

From EP 2730727 A2, a lock cylinder with a rotating cylinder core in a lock cylinder module and a locking latch for locking when opening or breaking the lock cylinder module is known, the lock bolt being arranged in a scanning unit adjacent to the lock cylinder module and for scanning the position of the lock cylinder module includes an optical latch and a locking bolt to lock. The lock cylinder according to the prior art has a core extension. The core extension is designed to couple two cylinder cores. An extension of the housing is also provided so that, in particular, a modular structure of a lock cylinder is obtained.

From DE 10 2011 100 444 A1, a double lock cylinder is known having a core extension in the form of a one-piece housing for each cylinder core. The core extensions can be displaced axially.

From GB2545389, a lock cylinder with a safety mechanism is known. This has a one-piece core extension, which has a material that is weakened through a groove formed there, which serves as a predetermined breaking point. In the operating position, the slot is aligned with a channel that is provided for a locking latch. The locking latch is held prestressed by a cross latch.

From document EP2840204 a lock cylinder with a casing, an impeller with a rotating locking lug on the casing and with an exterior and an interior on both sides of the impeller is known, wherein at least one core of cylinder with sleepers and inside a cross member pre-tensioned by the spring force, which is blocked by a part that can be displaced axially under the force of the spring and which is at least partially retained in the housing and which locks the lock cylinder when the exterior is broken due to the lock failure, wherein a predetermined breaking point is provided in the casing on the exterior between the non-axially displaceable impeller and the nearest drum, and the axially displaceable part is slidably mounted and non-rotationally permanent in the impeller and is spring loaded in the axial direction on the cylinder core end face on the outside applied direct or indirectly.

From GB 2531 900 A, another double lock cylinder with a predetermined breaking point is known.

Other anti-snap locks are known, for example from DE 20021352 U1, WO 2014176647 A1, WO 2011 051 703 A2.

It is an object of the present invention to create a core extension, an extended lock core, an anti-snap lock cylinder, a lock device and a method for this, in which an improved anti-snap function is implemented and is improves your operation and production procedure.

These and other tasks are solved by a core extension according to claim 1, an extended lock core according to claim 2, an anti-snap lock cylinder according to claim 4, a lock device according to with claim 11 and the method according to claims 12 and 13.

Advantageous developments of the invention are specified in the dependent claims or are specified below with reference to the description of the figures.

The invention includes the technical teaching that, with a core extension, in particular a core extension for a lock core of a lock cylinder, which extends essentially in an axial direction to axially extend a lock core, it is envisaged that the core extension is formed in several parts and comprises at least one extension piece and at least one thrust piece adjoining it in the axial direction. The extension of the core is preferably carried out in several parts, in particular in two parts. In another embodiment, the core extension is constructed in several parts, in particular in four parts, six parts or with several parts. The core extension is preferably designed in two parts. The pressure piece is connected to the extension piece in the axial direction. The thrust piece is preferably placed in a thrust piece receptacle in the extension piece. For this, in the axial direction of the lock cylinder, a hole or recess is provided in the extension piece, which acts as a housing for the pressure piece. The pressure piece is located in the pressure piece holder. Therefore, both the thrust piece housing and the thrust piece are preferably arranged essentially axially. In this way, the pressure piece is attached to at least one end face of the extension piece in the axial direction. In this case, the pressure piece can protrude axially at least partially beyond the extension piece or it can be arranged completely in the housing of the pressure piece, thus remaining recessed. The pressure piece preferably protrudes in the axial direction over the extension piece, in particular in the outward direction. The pressure piece is secured in the pressure piece housing so that it is not pulled out. For this, the pressure piece and the pressure piece housing have corresponding shoulders. A shoulder of the pressure piece is attached to a shoulder of the pressure piece housing in an operating position.

The core extension has the extension piece and the pressure piece axially adjacent and / or housed in the extension piece. By axial contiguous is meant any arrangement, including an insert, in which the pressure piece is in contact with the extension piece and a rear end of the pressure piece is arranged at a distance in the axial direction from a front end of the extension piece. The pressure piece is preferably located in the extension piece and is therefore preferably at least partially accommodated in the extension piece. The extension piece is designed to connect or interact with the lock core. The thrust piece is designed to interact with an axially adjacent coupling mechanism. Both the interaction with the lock core and the interaction with the coupling mechanism take place in a fixed manner in rotation, so that a torque can be transmitted.

Preferably, the extension piece is designed to extend flush with the outside of the lock core. This means that the extension piece and the lock core are arranged (approximately) concentrically, i.e. if the extension piece and the lock core are configured as rotating parts, they are arranged one behind the other on a common axis. , the respective axis of the corresponding part being thus arranged concentrically and / or aligned with each other. The thrust piece housing is eccentric. That is, the axis of the pressure piece housing is offset, more precisely arranged or designed offset parallel to the common axis of the lock core and the extension piece. The extension piece further preferably has a coupling section that interacts with a corresponding receiving section of the lock core. Alternatively, the lock core can have a coupling section and the extension piece can have a receiving section. The coupling section and the receiving section are designed to interact, in particular to transmit a pair, and are also called coupling means due to the coupling with each other. The coupling section and the receiving section are preferably designed to be complementary.

Radially, the cylinder core and the extension piece have approximately equal dimensions, so that a flush transition is ensured. At the end opposite the cylinder core, the core extension has a pressure piece designed as a pressure latch. The pressure latch or pressure piece is designed to interact with the extension piece. For this, the extension piece has a corresponding pressure piece or pressure latch housing. The pressure latch housing is designed preferably as a hole. In one embodiment, the hole can be designed as a stepped hole. The pressure latch is designed to be at least partially complementary to the hole. In particular, the pressure latch has a shaft section. The shaft section is designed as a cylindrical shaft section. The stem section and the bore are designed to be complementary so that the pressure latch with the stem section can be received or received in the bore. To axially secure against outward pull-out, the bore and the shaft section are complementary staggered. Due to the eccentric arrangement of the pressure piece or the pressure latch housing, the pressure piece or the pressure latch is also received eccentrically.

In order that the thrust piece or the pressure latch is limited in the axial direction to the extension part, a stop is provided which can be provided on the housing and / or the pressure latch. The pressure latch preferably has a shoulder that functions as a stop. The shoulder is made up of a central part. The central part is axially connected to the shoulder of the shaft. The central part is also preferably cylindrical, but has a diameter greater than the shaft section. The pressure latch has an end portion on the side opposite the axle section. The end part is preferably configured as a rounded end cap. The end cap is radially smaller than the center part. In particular, the maximum radial dimension of the end cap corresponds approximately to that of the shaft section. Towards its end, the end cap tapers, preferably curves, so that a hemispherical shape is realized. The end cap, the central part and the shaft section are arranged concentrically to each other. In general, the pressure latch is designed to be rotationally symmetrical about its axis, preferably as a rotating part.

Accordingly, in one embodiment, provision is made for the extension piece to have a pressure piece housing for receiving the pressure piece, in which the pressure piece is received at least partially to effect an interaction between the pressure piece. pressure and the extension piece. The thrust piece housing is preferably arranged eccentrically. In this context, eccentric means that an axis of the thrust piece housing is offset, in particular an offset parallel to an axis of rotation of the lock core.

Another embodiment provides that the thrust piece has at least one change in cross-section in the axial direction, which causes, inter alia, an abutment of the thrust piece in the direction of the thrust piece housing. In particular, a radial change in cross section is anticipated as seen in the axial direction. The change in cross section can be continuous or sudden. Preferably at least one shoulder is provided, preferably precisely one shoulder. The respective shoulder is preferably designed as a circumferential shoulder.

The invention provides that the extension piece has coupling means for connection to the corresponding coupling means of the lock core. The coupling means form a predetermined breaking point of the core extension. In addition to the molding and the corresponding housing -the coupling means-, the extension piece has other coupling means for connection to the lock core. The coupling means of the lock core and the extension piece are designed for an axial coupling and here: according to the invention for a bolt connection. In this way, an at least positive connection is made. The connection comprises a latch and a latch housing. The latch housing extends transversely, in particular perpendicular to the axis of the lock core and the extension piece and at least partially penetrates both the lock core and the extension piece. The latch housing is preferably designed as a through opening, in particular as a through hole through the lock core and the extension piece. In the assembled state, the latch receiving sections of the lock core and the extension piece are aligned. A latch is inserted through the latch receiving sections for connection. Thus, in addition to a connection provided in the circumferential direction for transmitting a torque, an axial clamping device is also provided. The latch and the through opening are dimensioned so that they can form a second predetermined breaking point. The predetermined breaking point includes any type of strain or strain point that represents a desired and / or intended impairment of function. In particular, a predetermined breaking point is dimensioned such that during a breaking attempt it breaks in front of the component with the weakest section, generally the front hole area, and thus prevents the component from breaking in the area of the weaker section (front hole). This includes both partial deformation and breaking or tearing. The cross section of the latch and the through opening are designed accordingly. The latch is designed to be complementary to the through opening and its outer dimension roughly corresponds to the inner dimension of the through opening. The dimension of the cross-sectional area of the latch is preferably less than the cross-section of a cylinder housing in the area of the screw hole of the front part. The cross section of the through opening is preferably greater than the cross section of the predetermined breaking point in the cylinder housing.

If it were attempted to be opened using the press fit procedure, the axial connection of the extension piece and the lock core would separate. This makes the extension piece more difficult to remove in the axial direction.

The invention also provides that the extension piece has at least one locking recess that extends transversely to the axial direction to interact with a locking mechanism. A locking mechanism is provided so that the extension piece cannot simply be pulled out in the axial direction when attempting to break. To interact with the locking mechanism, the extension piece has at least one corresponding locking mechanism housing or, for a shorter time, locking housing. The housing of the locking mechanism is designed as a recess, in particular as a knockout. The knockout hole preferably extends in a radial direction. At least two blind holes are preferably provided. At least two of the blind holes are arranged at the same distance in the axial direction from one end of the extension piece, but are radially offset. Preferably, two adjacent knockouts are arranged offset by approximately 90 °. In this way, the core extension can be used for conventional keylock combinations and for reversible keylock combinations. The respective knockouts are preferably radially aligned.

The invention also includes the technical teaching that with an extended lock core, in particular an extended lock core for a lock cylinder of a cylinder lock, comprising at least one lock core unit and at least one extension of core, it is envisaged that the lock core unit with the core extension through the corresponding coupling means of the lock core unit and the core extension are connected, in particular secured in the axial direction, in particular in wherein the core extension is configured as a core extension described herein, wherein the lock core unit has coupling means for connecting the lock core unit to the core extension, representing a weakening of the material and, therefore hence a predetermined breaking point, where the core extension is formed in several parts. The axial lock prevents it from moving in the axial direction. The coupling means are designed as axial coupling means that prevent the connecting piece and the central locking unit from being axially separated. According to the invention, the axial connection, as described above, is configured as a latch connection. The lock core unit corresponds to an unextended lock core, that is, a lock core without a core extension. However, the central unit of the lock has coupling means for connecting the central unit of the lock to the extension of the core. These represent a weakening of the material and therefore a predetermined breaking point. The core extension can be made in one piece or in several pieces. Thus, in one embodiment, two or more core extensions can be provided. In the case of a multi-part design of a core extension, at least two core extensions can be designed differently. For example, one core extension can be designed with an anti-snap function, while at least one other core extension can be designed without an anti-snap function or with a different or limited anti-snap function. For example, a lock core can be extended with a conventional core extension, which is then followed by core extension with the extension piece described herein and the pressure piece or pressure latch. In one embodiment, at least a part of the core extension is secured, in particular latched, in the axial direction with the adjacent part - the lock core unit and / or an adjacent core extension. In another embodiment, all parts of the core extension, with the exception of the respective thrust piece or thrust piece, are axially fixed to each other, in particular with latches. In any case, the core extension is fixed axially with the lock unit, in particular fixed with latches.

According to the invention, the connection of the coupling means on the side of the lock core and the coupling means on the side of the extension of the core is designed as a predetermined breaking point at which the core unit of the lock it can separate from the core extension when a corresponding force is applied. The cross sections are designed accordingly. As stated, the predetermined breaking point generally causes failure of the cross section, either by breaking or simply by at least partial deformation.

According to the invention, the corresponding coupling means are configured as a latch and latch housing, in particular as a latch and latch hole. The latch material and latch cross section or latch hole dimension are selected so that the predetermined breaking point breaks versus the area around the front hole.

The invention also provides that, in a locking mechanism for an anti-snap lock cylinder, which locks the extension of the core in a cylinder housing when a lock core is moved axially, in particular when an attempt is made to extract the lock core , wherein the locking mechanism has at least one locking bolt preloaded in a locking bolt housing in a cylinder housing against, in particular directly against a lock core or an extended lock core, which interacts with the extension of the core or lock core extended during axial movement when attempting to remove the extended lock core from the lock core, in particular it engages in its recess because the locking housing is upstream of the locking pin housing or locking pin. lock and / or a connection between the lock core side coupling means and the lock core side coupling means of the core extension is designed as a predetermined breaking point, at which a lock core unit can separate from a core extension when a corresponding force is applied. Unlike the solutions known to the State of the art, the solution according to the invention does not require another optical latch or the like that directly locks the blocking latch and releases it to engage in the blocking cavity when it is fired. On the contrary, the solution according to the invention provides that the locking function is integrated into the existing components in the operating state. To this end, in an operating position of the locking mechanism, the locking bolt is preloaded directly against the extended lock core or the core extension. A spring presses the locking latch against the core extension. To prevent the locking latch from catching in the core extension locking housing, the locking housing is located opposite the locking latch housing or the locking latch. This means that the axis of the locking housing and the axis of the locking latch or the locking latch housing are arranged offset parallel to each other. In the operating position, the prestressed locking latch is pressed against an area around the opening of the locking housing so that the locking latch is not forced into the locking housing. Only with an axial movement of the core extension and therefore the locking housing, the axes of the locking housing and the locking latch / locking latch housing are arranged coaxially with each other and the locking bolt is forced inside the lock housing by the spring and therefore fits there.

The locking mechanism has a locking latch housing. This is preferably formed in a cylinder housing, for example as a knockout hole. A spring loaded locking latch is received in the locking latch housing. The locking latch housing and the locking latch are arranged such that an adjacently arranged lock core or an extended lock core presses the locking latch back into the locking latch housing in an operating position in the that the axes of the locking housing and the locking latch or the locking latch housing are offset relative to each other and in an axially displaced position in which the aforementioned axes are arranged coaxially or aligned with each other, enables the locking latch to lock is moved out of its pressed position at least partially in the direction of the core extension. Consequently, a recess is provided in the extension of the core, in which the locking latch can partially advance.

Alternatively or additionally, the locking mechanism has a connection between the lock core and the core extension. The extension connects the lock core or lock core unit and the extension piece of the core extension against axial separation. The connection is dimensioned with cross sections such that they form an additional predetermined breaking point in a different component of an anti-snap cylinder than in the cylinder housing.

The invention further includes the technical teaching that in an anti-snap lock cylinder, in particular an anti-snap lock cylinder for a cylinder lock, with at least one lock core and a cylinder housing in which the lock core is housed, wherein the cylinder housing, which is designed in particular in one piece, has at least one predetermined breaking point displaced forward, wherein a locking mechanism, in particular a locking mechanism, is provided lock described here, that in particular, when the lock core is moved axially, in particular when an attempt is made to extract the lock core, the extension of the core locks against an axial movement outside the cylinder housing and / or that, in addition to the predetermined breaking point in the cylinder housing, provides another predetermined breaking point, which is preferably provided in a component other than the cylinder housing itself to implement Enter a two-stage anti-snap function. In the context of the present invention, forwardly shifted is understood to be a position between an outer side and the screw hole of the front part. The predetermined breaking point is therefore upstream of the front part screw hole, that is, the weakest cross section apart from the predetermined breaking points, in the outer direction. In the event of an attempted break, the pre-offset predetermined break point would break in front of the cross section in the area of the front screw hole. The cylinder housing (also) has a predetermined breaking point. According to the invention, in addition to the predetermined breaking point in the cylinder housing, at least one other predetermined breaking point is provided. This other predetermined breaking point is provided in a different component of the cylinder housing and is therefore located outside the actual cylinder housing, whereby the component with the second predetermined breaking point can be arranged in the housing of the cylinder, that is, surrounded by it. On the outside, it should be understood that the other predetermined breaking point is in a component other than that of the cylinder housing. The predetermined breaking point, which is not formed in the cylinder housing, for example by an incision, is preferably implemented by the coupling means of the core extension.

Therefore, one embodiment provides that the connection of the lock core side coupling means and the core extension side coupling means is designed as a predetermined breaking point not assigned to the casing, in which the lock core unit can be separated from the core extension when a corresponding force is applied.

According to the invention, the corresponding coupling means are configured as a latch and latch housing, in particular as a latch and latch hole.

The invention also includes the technical teaching that in an anti-snap lock cylinder, in particular an anti-snap lock cylinder for a cylinder lock, with at least one lock core and a cylinder housing in which it is housed the lock core, wherein the cylinder housing, which in particular is made in one piece, has at least one predetermined breaking point, it is provided that in addition to the predetermined breaking point in the cylinder housing, another point is provided predetermined breakage, which is preferably provided in a component other than the cylinder housing, to achieve a two-step anti-snap function. A first predetermined breaking point is formed in the cylinder housing in a forward position. The default breaking point is designed as a cross section cone. The cross section in the radial direction perpendicular to the axis must be considered through the corresponding axial position. The cross section through the front screw hole is the weakest point in a conventional lock cylinder. Without an additional predetermined breaking point, the lock cylinder would break there in an attempt to break. Because an advanced predetermined breaking point is anticipated in the case of an anti-snap cylinder, the lock cylinder will break at the advanced predetermined breaking point in the event of a snapping attempt. Another predetermined breaking point is provided to further increase security against attempted breakage. Here other predetermined breaking points can be provided in the cylinder housing, in particular predetermined breaking points moving forward. However, at least one other predetermined breaking point is preferably provided in a different component of the cylinder housing, therefore outside the cylinder housing, in particular in the lock core, more precisely between the lock core and the prolongation of the nucleus. According to the invention, the second predetermined breaking point is configured as an axial safety element for the extension piece and the lock cylinder, for example a radial bolt connection or a bolt connection oriented transversely to an axis of rotation, in where the cross section or cross sections of the security device are to be selected accordingly. The perpendicular or radial cross section through the connection is weaker than the perpendicular or radial cross section through the front screw hole.

One embodiment provides that the lock core is designed as an extended lock core described herein, wherein the additional predetermined breaking point in addition to that of the cylinder housing, i.e. the additional predetermined breaking point in another cylinder component anti-snap lock that in the cylinder housing, is formed by the connection or coupling means of the extension of the core and the central unit of the lock. The second predetermined breaking point is preferably designed such that it is only broken after the first predetermined breaking point has been broken, preferably the predetermined breaking point formed in the one-piece housing. In one embodiment, the second predetermined breaking point is not immediately broken, but the coupling means is at least partially deformed. In this way, the deformation also contributes to blocking.

In another embodiment, the core extension is envisioned to be configured as a core extension described herein.

Another embodiment envisages that a locking mechanism is provided which locks the lock core in the cylinder housing when the lock core moves axially, in particular when trying to extract the lock core, in particular locks it against the axial movement. The locking mechanism may comprise the second predetermined breaking point. Locking occurs more precisely when the core extension is moved axially. This means that no more optical latches are needed, requiring the corresponding holes. Because the core extension either interacts directly with or pushes the locking latch back into the locking latch housing against spring force. Therefore, there is no indirect shot as with a marker. Consequently, only one housing for the locking latch (and spring) must be provided in the housing to receive the locking mechanism. At right angles to this, no further optical latches or the like are envisaged. This design also makes it possible to dispense with a housing extension, necessary for the realization of a cylinder with an optical latch. Therefore, the lock cylinder consists of a single housing and is designed without a scanning latch. The locking latch can also be simply designed as a cylindrical latch without a constriction or the like. As a result, the manufacturing effort increases significantly with an improved mode of operation. Locking is accomplished by radial penetration of the locking latch into the locking housing.

Yet another embodiment provides that the locking mechanism has at least one locking bolt loaded into a locking bolt housing in the cylinder housing against the cylinder core or the extended lock core, which during axial movement during an attempted removal of the lock core from the extended lock core with the cylinder core cooperates with the extended lock core, in particular it engages in its recess. The locking mechanism is activated by displacement, in particular axial movement, of the core extension. No need for an optical latch or other indirect trigger. The extension of the core, more precisely the extension piece, thus forms the activation mechanism. In the mode of operation, the locking latch is spring loaded against the extension of the core, preferably in an area outside the housing of the locking mechanism in the extension piece. The housing of the locking mechanism (lock housing) is arranged adjacent to the spring loaded locking latch and therefore also adjacent to the housing of the locking latch. The housing of the locking mechanism is arranged in the part extension in such a way that in case of axial displacement or axial movement outwards, the locking bolt can at least partially reach the housing of the locking mechanism. The locking bolt, therefore also the locking bolt housing and the locking mechanism housing, are preferably axially offset, thus approx. (axially) parallel to each other.

Yet another embodiment provides that the locking latch housing is located upstream of the locking recess or locking mechanism housing in an operating position. Upstream in the sense of the invention here means that the housing of the locking bolt is closer to the outside than the recess for receiving the locking bolt in the extension piece, ie the housing of the locking mechanism. As the core extension moves outward, the extension piece releases the locking latch so that it can protrude into the locking mechanism housing. Therefore, the coupling lock mechanism blocks further axial and / or rotational movement of the core extension.

One embodiment also provides that the cylinder housing has a locking lever slot for a rotating locking lever about an axis of rotation, the locking lever slot and / or the locking lever having a shoulder so that the slot and / or lever have different dimensions in the axial direction. The locking lever is radially and rotatably housed in the cylinder housing. Consequently, the cylinder housing has a corresponding locking lever slot. It penetrates radially into the housing and extends in the axial direction. In order to realize a small lock cylinder, the slot of the locking lever is configured with a change in cross-section in the radial direction, in particular with at least one shoulder. Corresponding or complementary thereto, the locking lever has a corresponding change in cross section or corresponding shoulders in the radial direction. In particular, an L-shaped cross section, viewed from the side, is provided for the slot or the locking lever.

Therefore, an embodiment provides that a first shoulder section with a smaller axial dimension is arranged closer, in particular radially closer to the axis (of rotation) of the lock core than a shoulder section with a dimension axial major and the locking mechanism in the lock cylinder is arranged in the radial direction above the shoulder section with the major axial dimension and / or next to the shoulder section with the minor axial dimension. The smaller axial dimension allows for more shell material at this point. The locking mechanism is formed in the housing material next to the smaller axial shoulder. In particular, the housing of the locking latch is formed here. This is preferably adjacent to the opening section with the smallest axial dimension, above the opening section with the largest axial dimension and below the extension piece.

In a preferred embodiment, it is envisaged that the anti-snap lock cylinder is designed as a double lock cylinder with an outer lock cylinder section and an inner lock cylinder section. When attempting to break, the outer lock cylinder section is attacked and partially destroyed. Due to the solution according to the invention, the inner section of the lock cylinder remains functional.

Furthermore, the invention includes the technical teaching that in a lock device comprising at least one key and at least one corresponding lock core and / or a corresponding lock cylinder, the lock core is provided as the lock core The extended length described here and / or the lock cylinder is designed in accordance with an anti-snap lock cylinder described herein and the key corresponds to and / or is assigned to the lock cylinder and / or the lock core.

The invention also includes the technical teaching that in a method for securing anti-snap of a described anti-snap lock cylinder, it is envisaged that during a snapping attempt in which a force is applied to the outer section of the lock cylinder , first breaks the first predetermined breaking point of the cylinder housing and when the lateral force is further applied to the outer section of the lock cylinder, the second predetermined breaking point is broken and / or deformed in a component of the anti cylinder -snap other than the cylinder housing.

One embodiment provides for the locking mechanism to engage in the recess between the breaking of the first predetermined breaking point and the breaking of the second predetermined breaking point.

Last but not least, the invention includes the technical teaching that in a process for producing an anti-snap lock cylinder described here, the steps are foreseen: providing a first predetermined breaking point in the cylinder housing, in in particular the one-piece cylinder casing, and providing a second predetermined breaking point in another component of the anti-snap cylinder than in the cylinder casing, in particular in the extended lock core, more precisely between the lock core and the prolongation of the nucleus. A lock core or lock core unit is provided to produce the anti-snap cylinder. This is connected to a core extension. The core extension and the lock core unit are preferably connected via a latch connection. The locking mechanism is also provided. This is arranged or formed in or on the cylinder housing. For this purpose, the extended lock core is inserted into the casing of the cylinder in such a way that the extended lock core, more precisely the extension of the lock core, pushes the locking bolt towards the housing of the locking bolt.

The present invention with the anti-snap function therefore offers protection against violent attacks in which the outer part of the lock cylinder must be broken. The first predetermined breaking point upstream in the cylinder housing and the additional locking mechanism ensure that even after breaking the cylinder housing on the outside, an attacker cannot access the locking lever. If the rotary mechanism is locked from the outside at the same time, the door can still be closed from the inside. This is particularly relevant for any dangerous situation that may arise, such as in the event of a fire, etc. In one embodiment, a cylinder front is equipped with a hole and removal guard. Furthermore, the area between the predetermined breaking point in the cylinder housing and the locking lever is protected against perforation in one embodiment by hard metal elements.

A forced theft procedure is called snapping, in which an attempt is made to remove the lock cylinder by breaking it when the door is closed in order to gain access to the lock. In the initial situation, the door, which is equipped with a cylinder lock with a lock cylinder, is locked. The snapping attack occurs from the outside. The lock cylinder and the lock are firmly attached to the door. The length (axial) of the lock cylinder adapts to the door leaf and any hardware that may exist, and does not protrude more than 3 mm. The theft (attempted) is done with a pair of pliers, usually a lock-device welding pliers, and a flat-head screwdriver. Using pliers and a screwdriver, the fixture that surrounds the lock cylinder on the outside of the door, if any, is removed or bent so that the lock cylinder is freely accessible from the outside. Then the pliers are placed horizontally or vertically on the lock cylinder and, if necessary, locked. Try to apply the pliers as close as possible to the door leaf or the ceiling of the lock. Then the handle of the pliers is pulled to the right and left or up and down. This ensures that the lock cylinder housing breaks at the weakest cross section, without a predetermined breaking point in the front screw hole area, otherwise at the predetermined breaking point, as the Smaller material cross section is present there. If the rod or cylinder housing breaks after the sudden movement, the outer part of the lock cylinder can be removed with the pliers on conventional locks. The locking lever and the inside of the lock cylinder are exposed and accessible from the outside. The locking lever can be turned directly with a screwdriver and the locking bolt can be retracted. If this is not immediately possible, the inside of the lock cylinder is first pressed into the door with the screwdriver and the now mostly loose locking lever is removed from the lock. Then the latch mechanism of the lock is actuated directly or with the help of the locking lever with a screwdriver. The aforementioned breaking procedure is considered successful if, after removing the lock cylinder, totally or partially, the lock bolt can be closed at least one turn. Lock cylinders that offer greater resistance to this type of attack are commonly called anti-snap cylinders.

To counter the attempted theft with the snapping procedure, it is necessary to take various countermeasures on the lock cylinder. First of all, it must be avoided that the lock cylinder can break at the weakest point (without a predetermined breaking point): the cross section at the front screw hole, that is, the point with the cross section of smaller material. In the case of a double cylinder without predetermined breaking points, this point is in the area of the front screw hole. In one embodiment, the front screw hole area is reinforced with very hard or very elastic materials or combinations of materials. This prevents, for example, it from breaking or breaking completely after the material has broken and is brittle. Another embodiment envisages that a modular lock cylinder is provided. The lock cylinder is made up of segments. In the event of a sharp movement with the pliers, only the individual segments of the lock cylinder housing will break off and can be pulled out, but not the entire outside of the lock cylinder on the outside of the door. In this way, the weakness of the material is displaced from the band with the screw hole of the front part to the fixing element and connection of the module segments. In another embodiment, the weak point of the material is moved forward to a predetermined first breaking point. A predetermined breaking point or several predetermined breaking points are provided between the front screw hole and the outer front surface of the lock cylinder. The material left there has a smaller material cross section than the band in the front screw hole area. During a break attempt, the lock cylinder breaks at the first predetermined break point rather than in the front screw hole area, as was previously the case with conventional designs. Therefore, a part of the lock cylinder housing remains between the screw hole of the face plate and the exterior of the door, so that the remaining parts of the lock cylinder can no longer be removed or pushed. Once it has been ensured that the lock cylinder cannot be broken at all or if it can be broken in a controlled manner, additional measures can be taken to prevent the locking lever from subsequently rotating from outside the door. The locking lever can be fixed temporarily or permanently by a shaft on the inside or outside of the lock cylinder, by spring loaded or non-suspended projecting latches. If the lock lever is only temporarily fixed, this means that even if the lock cylinder part has been broken from the outside, it can still be closed from the inside of the door.

In the present invention, the lock cylinder is arranged with a predetermined breaking point between the front screw hole and the last housing latch, in particular the rearmost, on the outside of the cylinder. This predetermined break point is positioned and designed such that the remaining material has a lower section modulus than the material in the front screw hole area.

In the upper, large-diameter part of the lock cylinder housing, the lock core and a shaft, also an extension of the core, with an integrated thrust piece are arranged. The core end of the lock core and the core extension are connected by means of a latch. This small diameter latch has no further function during the closing process and is part of the protection mechanism in the event of a snapping attack.

The inserted pressure piece and the corresponding hole in the extension of the core are designed so that a step or a cone delimits the pressure piece in the direction of the front surface of the exterior of the lock cylinder in axial movement. This prevents the pressure piece from being withdrawn after the outer part of the lock cylinder has been broken, as a result of which the engagement mechanism of the locking lever located behind would be freely accessible.

In the extension of the core, two blind holes are made at an angle of 90 ° to each other. A bottom-facing hole is provided. The other hole is offset 90 ° to one side of the core extension. Therefore, the holes are at a 6 o'clock position and at a 3 or 9 o'clock position. This means that the core extension can be used for both conventional and horizontal locking systems. In each case, one of the holes, depending on the profile system of the lock cylinder, interacts with the locking mechanism in case of attack.

Beneath the core extension and between the first predetermined breaking point and the front screw hole there is a hole in the lock cylinder housing, protruding at the large upper diameter, in which the locking mechanism is located. This includes a spring loaded chuck. The hole is arranged in such a way that in the initial state it is closer to the front surface of the exterior of the lock cylinder than the knockout hole of the core extension.

An additional piercing protection segment is inserted between the predetermined breaking point and the locking mechanism or the locking latch housing in the axial direction to protect the locking mechanism against subsequent attacks even after the lock cylinder part has been broken.

If the lock cylinder is now attacked by the breaking procedure, it first breaks at the predetermined breaking point located upstream. By setting the predetermined breaking point, the lock core remains on the outside of the cylinder housing. The core extension connected to the lock core is displaced when broken by the connecting latch to the outside of the lock cylinder, so that the spring-loaded mandrel of the locking mechanism can jump into the knockout hole of the core extension . The core extension is now locked in the mandrel locked position. If the force continues to act on the outside of the lock cylinder, it acts on the core and on the connecting bolt for the extension of the core. The diameter, material and / or position of the latch at the end of the lock core core is designed so that it will now break or bend, so that the previous connection between the lock core and the extension is released of the nucleus.

The outer part of the lock cylinder together with the lock core is now removed with pliers or can be removed, the core extension has moved to the locked position in the remaining part of the lock cylinder, the chuck of the locking mechanism. The lock has popped and the connection between the lock core and the core extension is separated. The core extension and thus the locking lever can no longer be rotated from the outside.

An attacker now looks from the outside at a flat surface of the housing, more precisely the rear surface of the predetermined breaking point and the extension of the fixed core with pressure piece. Gripping with pliers is no longer possible due to the cut in the door leaf or because the rest of the lock cylinder part protrudes slightly from the lock cover. Against more screwdriver attacks, the core extension is designed in such a way that there is no edge for a powerful accessory. The part of the core extension that previously protruded into the lock core is designed on the inside so that the screwdriver slides when torque is applied and the force cannot act on the component itself or the locking mechanism. The pressure piece is protected by the step or the cone in such a way that the attacker cannot remove it after the outer part of the lock cylinder has been broken. Access to the locking lever engagement mechanism is also protected.

From the inside of the door, the lock cylinder can still be closed even after the outside has been attacked and broken. This has the advantage that the door can be opened from the inside and therefore it is possible to leave the building.

In summary, the lock cylinder according to the invention comprises a one-piece lock housing with two-step anti-snap function. The two-step anti-snap function is implemented by a first predetermined breaking point upstream in the one-piece housing, for example by an incision, followed by a second predetermined breaking point. The second predetermined breaking point is made by axial connection of the core extension. A locking mechanism is provided for this purpose, which interacts directly with the core extension without an optical latch. An axial movement of the core extension, during which the off-axis arrangement of the locking latch and locking housing is changed to a coaxial, i.e. aligned arrangement, activates the locking mechanism. Blocking is caused by changes in the off-axis arrangement of the locking latch and the locking housing in the operating position in a locking position, that is, an aligned coaxial arrangement of the locking latch and the locking housing, wherein the locking latch engages the locking housing. As a result, only one locking latch, which is spring preloaded in the locking latch housing, is required for implementation. A latch and a latch holder are expendable. In this way, a compact lock cylinder or a compact lock device can be realized that can be housed in a single housing. A modular structure with a housing extension is not required.

Other measures that improve the invention are specified in the dependent claims or result from the following description of at least one embodiment of the invention, which is shown schematically in the figures. In the figures, the same or similar components are identified by the same or similar reference symbols.

Fig. 1 shows, schematically in a side view, an embodiment of an anti-snap lock cylinder, Fig. 2 shows schematically in a side view another embodiment of an anti-snap lock cylinder,

Fig. 3 shows schematically in an exploded perspective view the embodiment according to Fig. 1, Fig. 4 shows schematically in a perspective view an embodiment of an extended lock core according to Fig. 3,

Fig. 5 shows, schematically in perspective view, an embodiment of a pressure piece of a core extension,

Fig. 6 shows schematically, in side view, the embodiment according to Fig. 5,

Fig. 7 shows schematically in a front view the embodiment according to Fig. 5,

Fig. 8 shows schematically in a perspective view an embodiment of an extension piece of a core extension,

Fig. 9 shows schematically in a side view the embodiment according to Fig. 8,

Fig. 10 shows schematically in another side view of the embodiment according to Fig. 8,

Fig. 11 schematically shows in a sectional view section B-B of the embodiment according to Fig. 9,

Fig. 12 schematically in another sectional view the embodiment according to Fig. 9,

Fig. 13 shows schematically in a side view a cylinder housing of the embodiment according to Fig. 2, Fig. 14 shows schematically in front view the embodiment according to Figs. 1 and 2,

Fig. 15 schematically shows in a sectional side view the section D-D of the embodiment according to Fig. 1 shown in Fig. 14,

Fig. 16 shows, in a side sectional view, the D-D section of the embodiment according to Fig. 2, represented in Fig. 14, and

Fig. 17 shows, schematically, a detail of the anti-snap lock cylinder.

Figures 1 to 17 show in different views and degrees of detail embodiments of a cylinder 100 or anti-snap lock or its parts or components.

Fig. 1 shows schematically in a side view an embodiment of an anti-snap lock cylinder 100. The lock cylinder 100 is designed as a double lock cylinder 100a. A section of the lock cylinder faces an interior I and a section of the lock cylinder faces an exterior A. The boundary line or boundary plane between interior I and exterior A is formed by the maximum cross section of the front screw hole 6, in which the front screw 7 is inserted, which is only schematically indicated by the reference number 7, plane of extension M radial or perpendicular to the axial axis Z. In the embodiment shown in Fig. 1, the outer section of the The lock cylinder is larger in the axial direction than the inner section of the lock cylinder 100, so that an asymmetric design with respect to the central plane M results. Symmetrical designs are possible. The double lock cylinder 100a is designed more precisely as a profile double cylinder and has a cylinder housing 2. The cylinder housing 2 is composed of a cylinder wall 4 having a cylinder opening 3 and a circular cross section, and a band section 5 extending from the wall of the same material radially (see in particular Fig. 14). In each cylinder opening 3 there is a cylinder core or lock core 8, more precisely a lock core unit 8a, which is axially fixed, for example, by means of a locking ring. tighten 11 (see in particular Fig. 3). The inner wall of the cylinder wall 4 forms a core hole into which the respective lock core unit 8a is inserted.

In the lock core 8, a radially cut key channel is incorporated, indicated here by reference numeral 9, which is open to one side of the lock core 8 and is aligned with a longitudinal center plane of the lock section. band 5. In a known manner, the lock core 8 houses at least two-part latch elements, latch bolts, clamp bolts, core bolts and / or housing bolts 10, which are arranged by recesses of a key on the shaft side of the key or on the chest side of the key (see also Fig. 3). Housing latches 10 interact in known manner with compression springs 10a and corresponding core latches 10b. The core-side ends of the housing latches 10, which are suspended in the direction of the key channel 9, project into the key channel 9 in a stop-limited manner. However, such housing latches 10 are known, so they will not be discussed in more detail. A locking unit with a locking lever 41 is received around an axis of rotation of the cylinder wall 4 in a recess or an opening or a slot 42 of the locking lever. This is rotated around the axis of rotation Z when a key that matches the lock profile is turned, that is, with a key with a corresponding key profile and recesses on the side of the key shaft or on the side of the lock. key chest mating with bolt latches 10, thus performing a generally known locking function of the respective lock cylinder 100. The key shows, among other things, a key shaft and / or a key face in which the key profile is formed and, for example, in reversible key embodiments, dimples or permutation incisions. The groove 42 is located both to the left and to the right of the central plane M and therefore, together with the screw hole of the front part 6, weakens the cross-section of the cylinder housing material 2 in the plane center M. So the cylinder housing 2 is not in the area of the front screw hole 6 in the center plane during a snapping attempt. M breaks, a predetermined breaking point 80 is provided. The predetermined breaking point 80 is provided here as a groove 81 extending radially from the wall of the cylinder 4 into the web 5 without completely cutting the web 5. The unit The lock has here a lock lever 41 without an axial change in cross-section in the radial direction. Correspondingly, the mating groove 42 is designed without any axial cross-sectional change in the radial direction.

Fig. 2 schematically shows in a side view another embodiment of an anti-snap lock cylinder 100. In the embodiment shown in Fig. 2, the lock lever 41 and the slot 42, with an otherwise essentially identical embodiment of the lock cylinder 100 according to Fig. 1, formed with an axial cross-section change in the direction radial. Lock lever 41 and slot 42 are approximately L-shaped in view. In this case, the locking lever 41 and the slot 42 form a larger dimension in the axial direction Z than a radially closer section in a section that is more radially distant from the axis of rotation Z. Thus, radially closer to the axis of rotation Z between the groove 42 and the axis of rotation Z, a projection or shoulder 42a is created, which creates additional space for the material. In the case of a small lock cylinder 100, this additional material space may be provided on the shoulder or shoulder 42a, for example for a locking mechanism 90 (see in particular Fig. 16).

Fig. 3 shows schematically in exploded perspective the embodiment according to Fig. 1. The lock core 8 or the lock core unit 8a is inserted into the cylinder housing 2 in the axial direction. The lock core 8 or the lock core unit 8a, hereinafter abbreviated as lock core 8, 8a, is here designed as an extended lock core 8. For this purpose, the extended lock core 8 has an extension core 60 in addition to the actual lock core 8, 8a or the lock core unit 8a. The core extension 60 comprises a pressure latch 61 and an extension piece 65. The pressure catch 61 is received at the end of the extension piece 65 directed towards the center M. transmission of a pair. In particular, the accommodation can take place on this in a fixed manner in rotation. A detailed description of the core extension 60 or its components will be given below in Figures 5 to 12. At the end facing the lock core 8, 8a, the extension piece 65 has coupling means 77 for a fixed connection. rotationally with the corresponding coupling means 77 of the lock core 8, 8a. A latch connection is provided for an axial connection between the extension piece 65 and the lock core 8, 8a. In this case, a latch 71, for example a pin, is inserted into the corresponding latch housings 72, which overlap in the assembled state, into the extension piece 65 and into the lock core 8, 8a. Therefore, the extension piece 65 and the lock core 8, 8a are axially coupled. The lock core 8 on the inside does not have a core extension 60 in the embodiment shown in Fig. 3.

Fig. 4 shows schematically in a perspective view an embodiment of an extended lock core 8 according to Fig. 3. The extended lock core 8 sits inside the cylinder opening 3, on the outside of the double lock cylinder 100a. An axial coupling of the extension piece 65 and the lock core 8 is accomplished by a latch 71 which is inserted through the latch housings 72. Coupling means 77 for torque transmission are also shown. These are designed here as a recess in the central locking unit 8 and as a molding in the extension piece 65. To implement a locking mechanism 90 (see, for example, Fig. 17), locking housings 93 are provided which extend in the radial direction (see in particular Fig. 17).

Fig. 5 shows schematically in perspective view an embodiment of a pressure piece 61 of a core extension 60. The pressure piece 61 is essentially cylindrical. The pressure piece 61 has a central part 63, from one side of which the shaft section 62 extends centrally to the central part 63, but with a smaller diameter. An end cap 64, also with a smaller diameter, also protrudes centrally from its other side. The shaft section 62 is designed to be complementary to the complementary shaft housing of the extension piece 65, which is shown in Figs. 8 to 12. Fig. 6 shows schematically in side view the embodiment according to Fig. 5. Fig. 7 schematically shows the embodiment according to Fig. 5 in front view.

Fig. 8 shows schematically, in a perspective view, an embodiment of the extension piece 65 of the core extension 60. The core extension 60 is essentially configured as a cylindrical base body 67. This comprises the extension piece or pieces 65 and the pressure piece or pressure latch 61. The extension piece or piece 65 has a pressure piece housing 66 that extends over its entire axial length. Thrust piece 61 with corresponding shaft section 62 is axially housed in thrust piece housing 66. Thrust piece housing 66 is designed to be complementary to shaft section 62, here as a cylindrical bore. . The walls 68, which are designed as coupling elements for coupling to an axially adjacent coupling mechanism, are formed to project laterally from the base body 67. The coupling elements are designed for torque transmission. The coupling elements are located on the side facing the cover 64 of the pressure piece 61. On the opposite side of the base body 67, coupling means 77 are provided, here in the form of a molding 69. These are designed to be coupled with the corresponding coupling means 77 of the lock core 8, so that a torque can be transmitted from the lock core 8 to the extension of the core 60, or vice versa, by coupling the coupling means 77. The Fig. 9 shows schematically in a side view the embodiment according to Fig. 8. Fig. 10 shows schematically in another side view the embodiment according to Fig. 8. Fig. 11 shows schematically in a sectional view the section BB of the embodiment according to Fig. 8. Fig. 12 schematically shows in another sectional view the embodiment according to Fig. 8. As can also be seen in Fig. 8-12, the extension piece 65 has an openingthrough 17 eccentric. The through opening 17 forms the thrust piece housing 66, so that the pressure piece 61 rests in the through opening 17. Two locking recesses, locking housings or locking latch housings 93 designed as knockouts are provided. radially in the base body 67. The locking latch 93b can engage this when fired. The locking housings 93 are arranged offset 90 ° from each other.

Fig. 13 shows schematically in a side view a cylinder housing 2 of the embodiment according to Fig. 2. The aperture 42 has a larger dimension in the Z direction radially away from the axis of rotation Z, so that in the side view An L-shape results. The locking mechanism 90 is provided above the L-shape leg that protrudes in the Z direction, shown here by the broken line. This is shown in more detail in Fig. 15. The predetermined breaking point 80, designed as a slot 81, is offset outward A. If the outer cylinder section breaks, the core extension 60 moves toward the outside. Outside, the locking mechanism 90, more precisely the locking latch 93b, engages the locking housing 93 of the extension piece 65.

Fig. 14 schematically shows in a front view the embodiment according to Fig. 13. A description of Fig. 13 has already been given above. In view, the embodiment of the cylinder housing 2 shown does not differ from the embodiments of the cylinder housing according to Fig. 1 or Fig. 2, since, for example, the groove 42 of the lock lever is not visible here. Thus, Fig. 13 can also show the embodiment of the cylinder housing according to Fig. 1.

Fig. 15 shows schematically in a sectional side view the section DD shown in Fig. 14, but according to a cylinder housing 2 according to the embodiment according to Fig. 1. Here, the opening 42 is formed with a constant cross section . In addition to the locking mechanism 90, shown here by the housing 93a of the locking latch in the housing, a cylindrical latch is provided at 94. The cylinder latch here serves as an additional perforation protection segment between the predetermined breaking point 80 and the locking mechanism 90.

Fig. 16 schematically shows in a sectional side view the section DD shown in Fig. 14, here according to a cylinder housing 2 according to the embodiment according to Fig. 2. In this embodiment, the opening 42 is configured with a section transverse shifted in the radial direction. In addition to a locking latch 93 (not shown here) of the housing-side locking latch housing 93a adjacent to the locking mechanism 90, a housing 94a is provided for the cylindrical latch 94 designed as an adjacent perforation protection segment. abroad A.

Fig. 17 schematically shows a section of the anti-snap lock cylinder 100 or an embodiment thereof in a sectional view. In particular, the locking mechanism 90 can be clearly seen in sectional view. In In the Figure shown, this includes the locking latch 93b, which is pressurized by a compression spring 10b. Compression spring 10b and locking latch 93b are arranged in the locking latch housing 93a on the side of the housing. The arrangement is such that the pressurized locking latch 93b is pressed against the extension of the core 60 on one side. The locking housing or locking recess 93 is provided in the extension piece 65 of the core extension 60. The locking housing 93 is oriented in the same way, radially, as the locking latch 93b. The locking housing 93 is designed such that the locking latch 93b can move into or engaging in the locking housing 93 when the locking housing 93 and the housing-side locking latch housing 93a are arranged approximately in the same way. coaxial mode with each other. In the illustrated initial or operative position, the locking housing 93 is disposed offset from the locking latch housing 93a and therefore also the locking latch 93b. The spring-pressurized locking latch 93b thus presses against the extension piece 65 of the core extension 60. During a break attempt, the core extension 60 with the extension piece 65 moves outward A. As a result, the locking housing 93 is brought into an extension of the housing-side locking latch housing 93a so that these are arranged coaxially and / or axially aligned. In this aligned arrangement, the locking latch 93b biased by the compression spring 10b partially enters the locking housing 93 in the extension piece 65, so that further movement of the extension piece 65 is blocked due to engagement of the locking latch 93b in the extension piece 65. On the side close to the locking mechanism 90 in the outer direction A, the cylinder latch 94 is provided which serves as a hole protection. The locking lever 41 with the additional lock cylinder mechanism 100 is arranged in the inner direction I. The basic design of the locking mechanism 90 in the case of a stepped lock lever 41 is similar to that of a non-stepped lock lever 41. The two embodiments differ essentially in the size of the locking latch 93b and the housing of the locking latch 93a on the side of the housing. The operation of the locking mechanism 90 is the same in both cases.

It goes without saying that the above-mentioned features of the invention can be used not only in the specified combination respectively, but also in other combinations or alone, without departing from the scope of the invention.

Reference symbols list

2 cylinder housing

3 cylinder opening

4 cylinder wall

5 band section

6 hole for front screw

7 front screw

8 lock cores (extended)

8th lock core unit

9 key channel

10 drum latch, retaining latch, drum element, casing latch

10a core latch

10b compression spring

11 clamping ring

17 through opening

41 lock lever

42 lock lever slot

42nd overhang, shoulder

60 core extension

61 snap latch, thrust piece

62 shaft section

63 center section

64 end cap

65 extension piece

66 thrust piece housing

67 base body

68 wall

69 molding

71 latch

72 latch housing

77 coupling means

80 default breaking point (on the housing)

81 slot

90 locking mechanism

93 locking housing (core extension), locking recess

93a locking latch housing (in housing) 93b locking latch

94 cylinder latch

94th accommodation

100 anti-snap lock cylinder

100th double lock cylinder

M median plane

On the outside, outside

I side inside, inside

Z axis Z, axis of rotation (axial direction)

Claims (13)

1. Core extension (60), in particular a core extension (60) for a lock core (8) of a lock cylinder (100) extending essentially in an axial direction (Z) to axially extend a core lock (8), wherein the core extension (60) is constructed in several parts and comprises at least one extension piece (65) and at least one pressure piece (61) contiguous in the axial direction (Z), wherein the extension piece (65) has an eccentric pressure piece housing (66) for receiving the pressure piece (61), wherein the pressure piece (61) is at least partially received and / or can be received to perform an interaction between the pressure piece (61) and the extension piece (65), wherein the extension piece (65) has coupling means (72) for connection to the corresponding coupling means (72) of the lock core (8), wherein the coupling means form a pu A predetermined breaking point of the core extension, where the extension piece (65) has at least one locking recess (93) that extends transversely to the axial direction (Z) for interaction with a locking mechanism (90 ), in particular to receive a latch (93b), wherein the coupling means of the lock core (8) and the extension piece (65) are designed for an axial coupling and here for a bolt connection, so that in this way an at least positive connection is made. 2. Extended lock core (8) for a lock cylinder (100) of a cylinder lock, comprising at least one lock core unit (8a) and at least one core extension (60), wherein the The lock core unit with the core extension (60) is secured through the corresponding coupling means of the lock core unit (8a) and the core extension (60) in the axial direction (Z), in where the connection of the coupling means on the side of the lock core and the coupling means on the side of the extension of the core are designed as a predetermined breaking point at which the lock core unit (8a) can separated from the core extension (60) according to the action of force, the corresponding coupling means being designed as latch (71) and latch housing (70). 3. Extended lock core (8) according to claim 2, characterized in that the corresponding coupling means are configured as a bolt (71) and a bolt hole. 4. Anti-snap lock cylinder (100) for cylinder lock, with at least one lock core (8) and a cylinder casing (2) in which the lock core (8) is housed, where the cylinder housing (2) has at least one predetermined breaking point (80), characterized in that a locking mechanism (90) that blocks the extension of the core (60) against axial movement in the cylinder housing (2) when the lock core (8) moves axially during an attempt to extract the lock core and where the anti-snap lock cylinder (100) provides, in addition to the predetermined breaking point (80) in the cylinder casing ( 2), an additional predetermined breaking point found in a different component of the anti-snap lock cylinder (100) than in the cylinder housing (2) itself is intended to implement a two-step anti-snap function , wherein the lock core (8) is configured as a cer core extended radius (8) according to one of the preceding claims 2 or 3, wherein the other predetermined breaking point is formed by the coupling of or coupling means of the extension of the core (60) and the core unit of lock (8a). Anti-snap lock cylinder (100) according to claim 4, characterized in that the locking mechanism (90) has at least prestressed locking bolt (93b) in a locking bolt housing (93a) in a housing cylinder (2) directly against a lock core (8) or an extended lock core (8) that interacts with the core extension (60) or the extended lock core (8) when attempting to remove the lock core prolonged (8) of the lock core during axial movement. 6. Anti-snap lock cylinder (100) according to claim 4 or 5, characterized in that the extension of the core (60) is configured as an extension of the core (60) according to claim 1. Anti-snap lock cylinder (100) according to one of the preceding claims 4 to 6, characterized in that the housing of the locking bolt (93a) is located upstream of the locking recess (93) in an operating position . Anti-snap lock cylinder (100) according to one of the preceding claims 4 to 7, characterized in that the cylinder housing (2) has a lock lever slot (42) for a locking lever (41) rotatable around an axis of rotation (Z), wherein the locking lever (41) and / or the slot of the locking lever (42) has a projection so that the slot (42) and / or the lever ( 41) have different dimensions in the axial direction (Z). Anti-snap lock cylinder (100) according to one of the preceding claims 4 to 8, characterized in that a first shoulder section with a smaller axial dimension is arranged closer to the axis of rotation (Z) of the lock core (8) than a shoulder section with a larger axial dimension and the locking mechanism (90) it is arranged in the lock cylinder (100) in the radial direction above the shoulder section with the largest axial dimension and / or adjacent to the shoulder section with the smallest axial dimension. Anti-snap lock cylinder (100) according to one of the preceding claims 4 to 9, characterized in that the anti-snap lock cylinder (100) is designed as a double lock cylinder (100a) with an outer section ( A) of lock cylinder and an inner section (I) of lock cylinder. 11. Closing device (100), comprising at least one key and at least one lock core (8) and corresponding / or a corresponding lock cylinder (100), characterized in that the lock core (8) is configured as extended lock core (8) according to one of the preceding claims 2 or 3 and / or the lock cylinder (100) is configured according to an anti-snap lock cylinder (100) according to one of the claims 4 to 10 above and the key of the anti-snap lock cylinder (100) corresponds to and / or is assigned to the extended lock core (8). 12. Procedure for anti-snap insurance of an anti-snap lock cylinder (100) according to one of claims 4 to 10 above, wherein in an anti-snap attempt in which a transverse force is applied to the section outer lock cylinder (A), the first predetermined breaking point (80) of the cylinder housing (2) is broken and when the transverse force is further applied to the outer lock cylinder section (A), the Second predetermined breaking point breaks at a component of the anti-lock lock cylinder (100) other than the cylinder housing (2) and / or between the breaking of the first predetermined breaking point (80) and the breaking of the second breaking point The predetermined lock mechanism (90) fits into the locking recess (93). 13. Process for producing an anti-snap lock cylinder (100) according to one of the preceding claims 4 to 10, comprising the steps: providing a first predetermined breaking point (80) in the cylinder housing (2), in particular the one-piece cylinder housing (2) and provide a second predetermined breaking point in another component of the anti-snap lock cylinder (100) than the cylinder casing (2) in the extended lock core (8), more precisely between the lock core (8) and the nucleus prolongation (60).