Cylinder lock

Abstract

A cylinder lock comprises a locking cylinder, a bracket for receiving the locking cylinder, and a locking element. The locking cylinder has a cylinder housing and a cylinder core rotatable within the cylinder housing about a cylinder axis, with a keyway. The locking element is axially fixed to the locking cylinder and comprises a blocking section, which in a blocking position rests against a stop section of the bracket, and a coupling section. The coupling section is accessible for coupling actuation through the keyway and can be rotationally coupled to the cylinder core by means of this actuation. The blocking section can then be moved from the blocking position to a release position by rotating the cylinder core with an associated key, in which the locking cylinder is released for removal from the bracket.

Description

[0001] The invention relates to a cylinder lock with a locking cylinder and with a holder for receiving the locking cylinder, wherein the locking cylinder has a cylinder housing and a cylinder core rotatable in the cylinder housing about a cylinder axis with a key channel.

[0002] For example, a cylinder lock is described in DE 10 2006 061 224 B3, in which a locking cylinder is fixed in a housing by means of a locking element. For this purpose, the locking element, which is axially coupled to a cylinder core, has two locking lugs with which the locking element engages through recesses in the housing, so that the cylinder core is held in the housing. The locking element can be moved perpendicular to a rotation axis of the special key by means of a special key and disengaged from the recesses in order to optionally remove the locking cylinder.

[0003] Furthermore, US Patent 3,713,311 A describes a cylinder lock in which a lock core is inserted into a housing and secured by a retaining tab of a retaining element projecting radially from the lock core. However, by inserting an extended special key, a pin, which is rotationally fixed to the cylinder core, can be brought into engagement with the retaining element. By subsequently turning the key, the retaining tab is aligned with the lock core, and the lock core can then be removed from the housing.

[0004] Furthermore, US 2005 / 072197 A1 describes a retaining clip for axially fixing a cylinder core in a holder.

[0005] These types of cylinder locks have numerous applications and can generally be used for stationary or mobile locking mechanisms, such as doors, flaps, or similar devices, or for padlocks, bicycle locks, or similar items. The cylinder lock allows the user to selectively lock, unlock, or release the respective locking mechanism by operating it. A corresponding key can be inserted into the keyway of the cylinder core, and the cylinder core can be rotated around its axis between a locked and unlocked position using the key. Rotation of the cylinder core from the locked to the unlocked position is blocked until the correct key is inserted.

[0006] In the locked position of the cylinder core, an opening action of the locking mechanism, for example, to open a door or flap relative to its surroundings, can be blocked by a bolt. Such a bolt can be driven directly or indirectly (e.g., via a coupled locking bolt) by the rotatable cylinder core, for example, via a drive section located on the rear of the cylinder core. By moving the cylinder core into the open position, such a bolt can be retracted or released, allowing the locking mechanism or the door, flap, or similar object to be opened.

[0007] By selectively locking or unlocking the locking mechanisms of doors, flaps, or similar items using such cylinder locks, rooms or buildings can be protected against unauthorized access, or items stored in boxes or containers can be secured. The locking and unlocking function of a cylinder lock can also be used indirectly, for example, to block a door handle in the locked position of the cylinder core and to release it for operation in the unlocked position. For instance, hinged or pivoting handles can be locked or unlocked from within the door itself. After unlocking the cylinder lock by operating the handle, a bolt can be retracted, allowing the door or flap to be opened.

[0008] To reliably counteract break-in attempts, it is essential that the cylinder lock is securely mounted in its installation environment (e.g., door or flap). This can be achieved using a mounting bracket that either forms the installation environment or is permanently attached to it. The cylinder should be fixed in the bracket in such a way as to largely prevent unauthorized removal. However, in some cases, it may be desirable to allow the authorized user to remove the cylinder from the bracket, for example, to replace it with a different cylinder that requires a different key.Particularly in the case of objects that are intended to be accessible to changing authorized users, such as rented motorhomes, other vehicles, rooms, or buildings, it may be desirable to replace the lock cylinder before handing the object over to another person in order to ensure the object's security. In some such cases, the problem arises that the lock cylinder and its surrounding area are only accessible from one side, i.e., from the side where the keyway of the keyway opens.

[0009] It is an object of the invention to create a cylinder lock which, on the one hand, reliably secures the locking cylinder in the associated holder against unauthorized removal attempts, but on the other hand allows the authorized user to easily and quickly remove or replace the locking cylinder.

[0010] This problem is solved by a cylinder lock having the features of claim 1.

[0011] The cylinder lock has a locking element, which is axially fixed to the cylinder and has a blocking section that, in a blocking position, rests against a stop section of the holder to secure the cylinder against removal from the holder. Furthermore, the locking element has a coupling section that is accessible for coupling actuation through the keyway and which can be rotationally coupled to the cylinder core by such coupling actuation. When the coupling section of the locking element is rotationally coupled to the cylinder core, the blocking section of the locking element can be moved from the blocking position to a release position by rotating the cylinder core with an associated key, in which the cylinder is released for removal from the holder.Furthermore, the coupling section of the locking element is designed to be moved away from the key channel by the coupling actuation, i.e., away from the key insertion opening of the cylinder core.

[0012] The aforementioned coupling actuation can, in particular, involve axial pressure actuation or force application. Specifically, the coupling section can be subjected to a force directed away from the keyway by a tool or special key inserted through the keyway, causing it to move away from the keyway and be rotationally fixed to the cylinder core. The keyway can extend along the cylinder axis, allowing the coupling section of the locking element to be moved axially away from the keyway relative to the cylinder axis by the coupling actuation. For example, the coupling section can be bent or shifted by the coupling actuation to be rotationally fixed to the cylinder core.

[0013] First, the locking element and the contact of its blocking section with the stop section of the bracket ensure a secure and reliable fixation of the lock cylinder within the bracket, preventing unauthorized removal attempts. The bracket may, in particular, have a receiving recess into which the lock cylinder can be inserted axially with respect to its axis, or into which it is inserted when mounted. Because the locking element is held firmly against the lock cylinder axially, and its blocking section rests against the stop section of the bracket in the locked position, axial removal of the lock cylinder from the bracket is prevented.The blocking section of the locking element – ​​viewed along the cylinder axis – can engage behind the stop section of the bracket in the blocking position in such a way that the locking cylinder is secured against removal from the bracket by the locking element. In particular, the bracket can completely surround the locking cylinder, so that removal from the bracket can only occur in an axial direction, and the locking cylinder can be completely secured in the bracket by the blocking section of the locking element in its blocking position.

[0014] To allow authorized users to easily and quickly remove the lock cylinder from its holder, for example, to replace it, despite this reliable security against unauthorized removal attempts, the locking mechanism can be released by the authorized user. To do this, the coupling section of the locking element can first be actuated using any tool inserted from the outside through the keyway, or using a specially designed key (as explained below), to couple the coupling section to the cylinder core in a rotationally fixed manner. For example, an elongated, rod-like tool can be used and brought into contact with the coupling section through the keyway, which can then guide the tool.The coupling actuation can be achieved, in particular, by applying force to the coupling section, whereby a force in the axial direction or along the cylinder axis can be transmitted to the coupling section by means of a tool or special key passed through the keyway. As a result of such force application, the coupling section can, for example, be bent, deflected, and / or displaced to establish a connection (e.g., an engagement connection) with the cylinder core.

[0015] After the coupling section of the locking element has been rotationally fixed to the cylinder core in this first step, a second step is required: the cylinder core must be rotated using the assigned key to move the blocking section into the release position and allow the lock cylinder to be removed from its housing. Simply actuating the coupling section does not change the position of the blocking section; rather, rotation of the cylinder core using the assigned key is required. The key used to rotate the cylinder core can be the assigned key used in normal operation of the cylinder lock, or the special key used for actuating the coupling section can also be used to rotate the cylinder core.The rotation of the cylinder core, due to its coupling with the coupling section of the locking element, causes the blocking section of the locking element to move towards the release position. For this purpose, the blocking section can be effectively connected to the coupling section, for example via a connecting section of the locking element, as will be explained below. However, the rotation of the cylinder core can only be performed by the authorized user who possesses the assigned key, so that only the authorized user can move the blocking section into the release position, in which the lock cylinder can be removed from the housing. Tampering attempts are thus reliably prevented.In this process, the blocking section can be brought out of alignment with the stop section of the holder by rotating the cylinder core after a coupling actuation of the coupling section, so that the blocking section in the release position does not block axial movement of the locking cylinder out of the holder and the locking cylinder can be removed from the holder.

[0016] To achieve a high level of security for the cylinder lock and to ensure that only authorized users can remove the cylinder from its housing, the cylinder may, for example, have multiple locking pins (e.g., pin tumblers or disc tumblers) that prevent the cylinder core from rotating relative to the cylinder housing in the locked position. However, these pins can be sorted by inserting the corresponding key into the keyway, thus releasing the cylinder core for rotation. Only by inserting the key, or when the pins are sorted, can the cylinder core be moved into the unlocked position, in which, for example, a door secured by the cylinder lock can be opened.Similarly, the blocking section of the locking element, when the coupling section is rotationally fixed to the cylinder core, can only be moved into the release position by means of the associated key, whereby it may be provided in particular that the cylinder core is moved completely from the locked position to the open position.

[0017] Such a cylinder lock thus enables, on the one hand, the reliable fixing of the cylinder in the housing to counteract attempts at forced entry or manipulation. On the other hand, the cylinder can be easily removed and, for example, replaced by an authorized user by moving the blocking section of the locking element into the release position in two steps. Since the coupling actuation of the locking element's coupling section is performed from the outside, frontally through the keyway, a special key or other suitable tool can be guided directly to the coupling section through the keyway. The coupling actuation of the coupling section can therefore be carried out easily and, in particular, without specific technical knowledge, even by a user who is not intimately familiar with the cylinder lock's construction.Then, the cylinder core simply needs to be turned in the usual way using the assigned key to move the blocking section into the release position and to remove the lock cylinder from the holder.

[0018] Further embodiments of the invention can be found in the dependent claims, the following description and the drawings.

[0019] In some embodiments, the coupling section of the locking element can be arranged in line with the keyway of the cylinder core. In particular, the coupling section of the locking element can be arranged in line with the keyway when the cylinder core is in the locked position and the cylinder lock is locked. The locking element can at least partially surround the cylinder core or the cylinder housing, and the coupling section can extend radially inwards with respect to the cylinder axis in line with the keyway. By arranging the coupling section in line with the keyway, a tool inserted through the keyway or a key specifically designed for this purpose can come into direct contact with the coupling section.are directed to the coupling section which is in line with the keyway, so that coupling actuation of the coupling section of the locking element for rotationally fixed coupling with the cylinder core can be carried out extremely easily.

[0020] In some embodiments, the coupling section of the locking element can be designed to be permanently and stably coupled to the cylinder core in a rotationally fixed manner due to the coupling actuation or force application through the keyway, particularly by inelastic or bistable deformation. In other words, the coupling section can be designed to maintain the rotationally fixed coupling to the cylinder core even after the coupling actuation has ceased.

[0021] For example, the coupling section can be plastically deformable by the coupling actuation, whereby the deformed coupling section is permanently and rotationally fixed to the cylinder core. For example, the coupling section can be forced away from the keyway by a tool inserted through the keyway and thus be inelastically deformable, so that the rotationally fixed coupling can remain even when the tool is removed and the force applied to the coupling section is discontinued. Such plastic deformation can be achieved, for example, by bending the coupling section, and it can also be provided that the coupling section can be set into a pivoting motion by the coupling actuation through the keyway, at the endpoint of which a rotationally fixed coupling to the cylinder core exists.As an alternative to plastic deformation, the coupling section can, for example, be designed as a bistable spring which, after overcoming a certain resistance or reaching a dead point due to coupling actuation, snaps shut and is thus stably deformed, for example, by a deflection angle in the range of 30° to 90°. In such an embodiment, the coupling section can be rotationally fixed to the cylinder core after snapping shut. The snapping shut can be perceptible to the user, for example, haptically and / or audibly, so that the user can perceive the successful coupling actuation of the coupling section.

[0022] However, a permanent or inelastic deformation of the coupling section of the locking element is not absolutely necessary for the purpose of rotationally fixed coupling with the cylinder core, especially if a (longer) special key is used for coupling actuation, which keeps the coupling section engaged with the cylinder core until and during the subsequent rotation of the cylinder core.

[0023] In some embodiments, the cylinder core may have a coupling recess, wherein the coupling section of the locking element may be designed to engage with the coupling recess of the cylinder core when the coupling actuation or force is applied through the keyway. The coupling recess may be arranged, in particular, in line with the keyway, so that the coupling section of the locking element can be forced or pushed into the coupling recess by the coupling actuation through the keyway. The coupling recess may point towards the keyway or be axially opposite it along the cylinder axis.In particular, the coupling section of the locking element can be brought into a permanent coupling engagement with the coupling recess of the cylinder core by applying a force and a resulting stable deformation, for example by bending, so that the coupling section of the locking element can then be permanently and rotationally fixedly coupled to the cylinder core.

[0024] The coupling recess can be designed or arranged, for example, as a slot and / or eccentrically with respect to the cylinder axis to enable the transmission of torque. Prior to coupling actuation, the coupling section of the locking element can be arranged axially with respect to the cylinder axis between the coupling recess and the keyway, and / or, particularly in the locked position of the cylinder core, extend in alignment with the keyway and the coupling recess. The cylinder core can be formed in one piece, or it is possible for the cylinder core to comprise several elements connected to each other in a rotationally fixed manner, one of which has the coupling recess.

[0025] In some embodiments, a first and a second associated key may be provided, wherein the first and the second associated key may be configured for rotary actuation of the cylinder core, and wherein the second associated key – as the aforementioned special key – may be configured such that the coupling actuation can be carried out by means of the second associated key. In particular, the second associated key may have an axial actuating extension by which the coupling section can be pushed away from the key channel when the second associated key is inserted into the key channel.

[0026] While the first assigned key may primarily be intended for rotating the cylinder core to open and close a cylinder lock during normal use, the second assigned key may be specifically designed for removing the lock cylinder from the housing. The second assigned key may be designed to automatically perform the coupling action upon or during its insertion into the keyway, connecting the coupling section to the cylinder core in a rotationally fixed manner. Subsequent rotation of the cylinder core, particularly into the open position, then moves the blocking section into the release position. Both the first and second assigned keys may also be designed to align the locking pins of the cylinder, thereby enabling rotation of the cylinder core.

[0027] Removing the lock cylinder using such a second assigned key also generally involves two steps: first, the coupling is activated by inserting the second assigned key into the keyway; then, the blocking section of the locking mechanism is moved into the release position by turning the cylinder core with the second assigned key. However, a user only needs to insert the second assigned key into the keyway and can then immediately turn the cylinder core. This eliminates the need to separately insert any other tool into the keyway to activate the coupling and subsequently remove the tool to release the keyway for inserting the (first or second) assigned key.

[0028] In addition to various recesses formed along a key shaft to sort the locking cylinder's tumblers and allow rotation of the cylinder core, the second associated key may, in particular, have an actuating extension that represents an axial extension of the second associated key relative to the first associated key. The actuating extension may be such that, during the insertion of the second associated key into the keyway, or before the second associated key is fully inserted into the keyway, it comes into contact with the coupling section in order to exert a force on the coupling section directed away from the keyway. In particular, the coupling section may be deformed by this actuating action and, for example, forced into a coupling recess.The actuating extension of the second associated key can be arranged, in particular, in such a coupling recess of the cylinder core during the rotary actuation of the cylinder core by means of the second associated key.

[0029] In some embodiments, the coupling section may be elastically deformable by the coupling actuation performed by means of the second associated key. Thus, when using the second associated key, it is not necessary for the coupling section of the locking element to be permanently or inelastically deformable. The second associated key may, for example, have an actuating extension by which the coupling section can be forced into a coupling recess for rotationally fixed coupling with the cylinder core, thereby becoming deformable.During the subsequent rotation of the cylinder core to move the blocking section into the release position, the coupling section can be held in rotationally fixed coupling with the cylinder core by the actuating extension, whereby the coupling section can return to the position before the coupling actuation after the cylinder core has been removed from the holder and the second associated key has been withdrawn from the key channel.

[0030] In some embodiments, the cylinder core can have a drive section, wherein the coupling section of the locking element can be rotationally fixed to the drive section of the cylinder core. In particular, such a drive section can be provided to drive a downstream locking element, for example, to enable or lock the operation of a door or flap handle depending on the position of the cylinder core. The drive section can be arranged on the rear side of the cylinder core, i.e., at an end of the cylinder core axially opposite to the cylinder axis from a key insertion opening for inserting the key into the keyway.In order to be able to couple the coupling section with the driver section, the driver section can in particular have the aforementioned coupling recess, with which the coupling section of the locking element can be brought into a coupling engagement during a coupling actuation and into which the coupling section can be forced, in particular by applying force.

[0031] The drive section of the cylinder core can be formed, in particular, by a separate drive element which is firmly connected to the rest of the cylinder core, especially by screws. Alternatively, however, it is also possible that the cylinder core is formed in one piece and has an integrated drive section for driving a subordinate locking element, which can, in particular, form a rear end section of the cylinder core.

[0032] The coupling section of the locking element can be arranged in a rotary recess of the cylinder core, in particular of the drive section or a drive element. The rotary recess can be designed as an axially narrow depression in which the coupling section is arranged axially with respect to the cylinder axis between the keyway and a coupling recess formed on the drive section. This allows the cylinder core and its drive section, or a drive element connected to the remaining part of the cylinder core, to rotate freely relative to the coupling section of the locking element for opening or locking the cylinder lock, provided that the coupling section has not previously been fixedly coupled to the cylinder core by the coupling mechanism.The blocking section of the locking element can therefore reliably remain in the blocking position during the use of the cylinder lock for opening or locking, without the locking element moving during this time.

[0033] In particular, the coupling section and the blocking section of the locking element can be arranged in a common plane before the coupling actuation occurs through the keyway. This common plane can be orthogonal to the cylinder axis.

[0034] In some embodiments, the locking element can have a ring and / or a ring segment. A ring can form a circumferentially closed structure, while a ring segment can be circumferentially open and, for example, C-shaped. The ring or ring segment can be, for example, hollow cylindrical (with a pronounced circumferential surface, i.e., with an axial extent along the cylinder axis that is greater than the material thickness of the ring or ring segment), or disc-shaped or flat (similar to a snap ring, i.e., with an axial extent along the cylinder axis that is less than the ring width of the ring or ring segment). In particular, such a ring or ring segment can be...The ring section forms a connecting section of the locking element, which at least partially surrounds a section of the cylinder housing and from which the coupling section of the locking element can extend radially inwards with respect to the cylinder axis, so that the coupling section, for example, in the locked position of the cylinder core, is aligned with the keyway and can be easily accessed through it for coupling operation. The blocking section can project laterally from such a ring or ring section to engage behind the stop section of the holder and thereby secure the locking cylinder in the holder.

[0035] The locking element can be one-piece or multi-piece, and in particular multi-layered.

[0036] In some embodiments, the locking element can be axially held in an annular groove of the lock cylinder. Such an annular groove can be located, in particular, on the side of the lock cylinder axially opposite the cylinder axis, near the key insertion opening through which the key can be inserted into the keyway. The annular groove can, for example, be formed by an end section of the cylinder housing that has a smaller radial extent with respect to the cylinder axis than a section of the cylinder housing adjoining it towards the key insertion opening. Furthermore, the annular groove can be bounded on a rear side, for example, by the drive section, in particular a drive element, which can also have a larger radial extent than the aforementioned end section of the cylinder housing.The locking element can thus be axially fixed between the drive section and the radially extending section of the cylinder housing. In particular, a ring-shaped or ring-section-shaped connecting section of the locking element can be arranged in the annular groove, from which the coupling section and / or the blocking section protrudes.

[0037] In some embodiments, the blocking section of the locking element can be movable relative to the cylinder housing and / or the mounting. In particular, in the blocking position, the blocking section can be arranged outside the alignment of the locking cylinder with respect to the cylinder axis (when viewed along the cylinder axis) and project laterally to abut the stop section and secure the locking cylinder in the mounting. After the coupling section has been actuated, the blocking section can be moved radially and / or tangentially with respect to the cylinder axis by rotating the cylinder core, so that in the release position the blocking section can be arranged, in particular, in line with the locking cylinder to allow the locking cylinder to be removed from the mounting.

[0038] In some embodiments, the blocking section of the locking element can be biased towards the blocking position. Such bias can be generated, for example, by the inherent elasticity of the blocking section and / or the locking element, and / or by a separate spring. The locking element can also include a spring or be designed as a spring. By turning the cylinder core with the associated key, the blocking section can be moved into the release position against the bias after coupling actuation of the coupling section, while the bias can reliably hold the blocking section in the blocking position during use of the cylinder lock.

[0039] In some embodiments, the locking element in the relaxed state can have a circumferential oversize relative to the lock cylinder and in particular relative to the aforementioned annular groove of the lock cylinder, so that when the cylinder core is turned by means of the associated key and the blocking section is moved accordingly, it has sufficient clearance to be able to move into the release position.

[0040] In some embodiments, the locking section is designed to directly follow the rotational movement of the coupling section while the cylinder core is being rotated. In other embodiments, an indirect drive of the locking section may be provided, for example, by the locking section sliding along a guide section of the cylinder housing or the mounting.

[0041] The locking element can have a support section that prevents it from rotating relative to the cylinder housing and / or the mounting. In particular, such a support section can generate a preload on the locking section in the direction of the locking position and prevent unintentional rotation of the locking element, for example, due to friction, when the cylinder core is moved to open or lock the cylinder lock. After the coupling section has been actuated, the locking element or a spring can be tensioned against the preload by rotating the cylinder core, thereby moving the locking section radially and / or tangentially with respect to the cylinder axis relative to the mounting and / or the cylinder housing into the release position.

[0042] In particular, the support section can project outwards from a connecting section of the locking element in a plane orthogonal to the cylinder axis and / or laterally, especially radially or obliquely to a radial orientation, and bear against an inner side of the bracket to prevent rotation relative to the bracket. Alternatively, instead of bearing against the bracket, the support section can also be formed on and / or connected to the cylinder housing.

[0043] In some embodiments, the locking element can have a circular arc-shaped connecting section. In particular, the circular arc-shaped connecting section can at least partially surround the cylinder housing. For example, the cylinder housing can have a substantially hollow cylindrical core receiving section into which the cylinder core is inserted, and the circular arc-shaped connecting section can at least partially surround the core receiving section of the cylinder housing. The coupling section can, for example, extend radially inward from the connecting section with respect to the cylinder axis.

[0044] The circular arc-shaped connecting section can be elastic, particularly within a plane orthogonal to the cylinder axis. In some embodiments, the locking section of the locking element can project laterally, particularly radially, outwards with respect to the circular arc shape of the connecting section. The elasticity of the connecting section can generate a preload of the locking section into the locked position, whereby, after actuation of the coupling section, the locking section can be moved against the preload relative to the cylinder housing and / or the mounting into the release position. For this purpose, the connecting section can be elastically deformable during rotation of the cylinder core while the coupling section is rotationally fixed to the cylinder core. In some embodiments, the circular arc-shaped connecting section can be essentially rigid, and the connecting section can be preloaded by a separate spring.

[0045] The arc-shaped connecting section can extend, in particular, between the support section and the locking section of the locking element. Specifically, the connecting section can be annular and interrupted between the locking section and the support section of the locking element; that is, the locking section and the support section can be arranged at both ends of the locking element.

[0046] In some embodiments, the bracket may have a lateral blocking recess into which the blocking section of the locking element projects or engages. In particular, the blocking section may project through such a lateral blocking recess. The lateral blocking recess or its boundaries may form the stop section for the blocking section, so that the blocking section, by projecting into or through the blocking recess, rests against the bracket and thereby secures the locking cylinder in the bracket.

[0047] In some embodiments, the lock cylinder can extend along the cylinder axis. The cylinder housing can include a core receiving section for receiving the cylinder core, as well as a flange section projecting radially away from the core receiving section with respect to the cylinder axis. The mounting can comprise a mounting core receiving section and a mounting flange section. The core receiving section of the cylinder housing can, in particular, be substantially hollow-cylindrical, and the flange section projecting radially away from the core receiving section can serve to receive pin tumblers for locking the cylinder core in the locked position against rotation. Furthermore, the locking cylinder can be held in the mounting in a rotationally fixed manner by the flange section.

[0048] The core receiving section can extend axially with respect to the cylinder axis beyond the flange section with a rear end section, wherein the locking element or a connecting section of the locking element can be arranged on the rear end section. In particular, the rear section of the core receiving section can have a reduced radial extent than the remaining part of the core receiving section and form the aforementioned annular groove.

[0049] Furthermore, the mounting core section of the bracket can have a lower locking recess through which the locking section of the locking element can extend towards the mounting flange section. This lower locking recess can transition into the lateral locking recess into which the locking section can project or through which it can extend. The lateral locking recess of the bracket can be formed, in particular, on the mounting flange section, so that the mounting flange section can form the stop section for the locking section of the locking element.

[0050] On the mounting flange section, a contact surface for the aforementioned support section of the locking element can be formed opposite the lateral blocking recess, thus preventing the locking element from rotating. The lateral blocking recess can be open towards the rear of the mounting. Furthermore, the lock cylinder or cylinder housing can be axially fixed at the rear by the mounting flange section, so that the mounting flange section can form a stop for the flange section of the cylinder housing. In the release position, the blocking section of the locking element can be arranged, in particular, in line with the flange section of the cylinder housing to allow the lock cylinder to be removed from the mounting.

[0051] In particular, the locking element may be made at least partially, especially with the exception of the coupling section, of spring steel.

[0052] In some embodiments, the cylinder lock, as already explained, can have a first associated key and a second associated key, both designed to rotate the cylinder core. The length of the first key can be selected such that when the first key is fully inserted into the keyway, the coupling section of the locking element cannot be actuated, while the length of the second associated key can be selected such that when the second associated key is fully inserted into the keyway, the coupling section of the locking element can be actuated in order to couple the coupling section to the cylinder core in a rotationally fixed manner.

[0053] While the first assigned key is primarily used to lock or unlock the cylinder lock during normal use by turning the cylinder core, the second assigned key may be specifically designed for removing the cylinder. To do this, the second assigned key, when inserted into the keyway, can come into contact with the coupling section, applying force to actuate it. The user can then turn the cylinder core, immediately moving the locking section into the release position. However, even in this case, removal of the cylinder from its housing is only possible for an authorized user. This is achieved by inserting a special key, specifically the second assigned key, to disengage the cylinder's locking pins.Only then is it possible to rotate the cylinder core and move the blocking section into the release position.

[0054] The locking element can comprise a circular arc-shaped connecting section for axially fixed connection of the locking element to the locking cylinder, wherein the blocking section for blocking an axial relative movement between the locking cylinder and the holder projects laterally outwards with respect to the circular arc shape of the connecting section, and wherein the coupling section projects radially inwards from the connecting section.

[0055] In particular, the locking cylinder to be fixed can have a cylinder housing with a substantially hollow cylindrical core receiving section for receiving the cylinder core, as well as a flange section projecting radially away from the core receiving section with respect to the cylinder axis. The arc-shaped connecting section of the locking element can be annularly closed or segmented, for example, C-shaped. The coupling section can project radially inwards with respect to the arc or the cylinder axis.

[0056] As described above, such a locking element makes it easy to secure the lock cylinder in the holder against unauthorized removal attempts and, at the same time, to allow the authorized user to easily remove or replace the lock cylinder.

[0057] In some embodiments, the coupling section can be stably deformable in the axial direction with respect to the cylinder axis, particularly through inelastic or bistable deformation. Such axial deformability with respect to the cylinder axis can, in particular, enable a rotationally fixed coupling of the coupling section to a cylinder core. This can be achieved, in particular, by bending, snapping, or pivoting the coupling section as a result of an axial force being applied.

[0058] Furthermore, the locking element can have a support section projecting outwards from the connecting section, essentially perpendicular to the cylinder axis. In particular, this support section can project radially away from the connecting section with respect to the cylinder axis or obliquely with respect to a radial orientation.

[0059] The locking element or its connecting section can be at least partially elastically deformable, particularly within a plane orthogonal to the cylinder axis. Furthermore, the locking element can be made at least partially, particularly with the exception of the coupling section, of spring steel. This can enable extremely cost-effective manufacturing of the locking element, allowing it to be easily replaced after the lock cylinder has been removed or the coupling section has been actuated. Alternatively, instead of elastic deformability, the blocking section of the locking element can be pre-tensioned in the direction of the blocking position by a separate spring.

[0060] Furthermore, the locking element can have the features already mentioned in connection with the cylinder lock.

[0061] Furthermore, the invention relates to a method for removing a locking cylinder of a cylinder lock from a holder, wherein the locking cylinder comprises a cylinder housing and a cylinder core rotatable in the cylinder housing about a cylinder axis, the cylinder being provided with a keyway, the cylinder being received in the holder and secured against removal from the holder by a locking element axially fixed to the cylinder, the locking element having a blocking section which, in a blocking position, rests against a stop section of the holder. In particular, the cylinder lock can be designed as disclosed herein.In this process, a coupling section of the locking element is rigidly coupled to the cylinder core by means of a coupling actuation through the keyway. The cylinder core is then rotated using an associated key, thereby moving the blocking section into a release position. The cylinder core is then removed from its holder. Finally, the coupling section of the locking element is moved away from the keyway by the coupling actuation.

[0062] The coupling actuation of the coupling section can be effected, in particular, by means of any tool, especially an elongated or rod-like tool, through the keyway to exert a force away from the keyway onto the coupling section. By rotating the cylinder core, the blocking section can then be moved into a release position, whereby the blocking section can be aligned with a flange section of the cylinder housing. However, this can only be done by the authorized user, since the cylinder core can only be rotated by the associated key. The locking cylinder can then be removed from the holder, in particular axially.The procedure therefore allows the authorized user to easily and quickly remove the lock cylinder from the holder, while effectively preventing an unauthorized user from removing the lock cylinder from the holder.

[0063] In particular, it may also be provided that the coupling operation can be carried out using the same or a further associated key, so that no separate tool is required for coupling operation. The associated key may, in particular, be a second associated key specifically designed for removing the lock cylinder from its holder. In addition, a first associated key may be provided, which, while allowing the cylinder core to be rotated to open or lock the cylinder lock, cannot be used for coupling operation. For this purpose, the second associated key may, for example, have an actuating extension that, upon insertion into the keyway, makes contact with the coupling section and applies force to it.This makes it possible to remove the lock cylinder from the holder in two steps, but only using the assigned key, especially the second one.

[0064] It may be provided that, after the removal of the lock cylinder, another lock cylinder is inserted into the holder. This second cylinder has a core that can be turned using a different key, but not the key that belonged to the removed lock cylinder. Consequently, it may be provided that the lock cylinder is replaced, so that the cylinder lock can then be opened with a different key. This is particularly useful for properties secured by cylinder locks that may be opened temporarily by different users, for example, during a tenancy, as it ensures the security of each user.

[0065] The invention is explained below by way of example using a specific embodiment with reference to the drawings.

[0066] They show: Fig. 1 a perspective view of a cylinder lock with a lock cylinder held in a holder, Figs. 2A and 2B are rear and front perspective exploded views of essential components of the cylinder lock, Fig. 3 a side view of the lock cylinder of the cylinder lock, Figs. 4A to 4C are a perspective rear view, a perspective front view and a rear view of the lock cylinder with the driver section released or removed, Figs. 5A and 5B are a rear view of a locking element for securing the lock cylinder in the holder and a perspective view of components of the locking element, Fig. 6 a perspective side view of the holder, Fig. 7 a perspective rear view of the holder with the lock cylinder inserted, and Figs. 8A and 8B are respective side views of a first associated key and a second associated key.

[0067] Fig. 1 Figure 1 shows a cylinder lock 11, which extends along a cylinder axis Z and can be operated by means of a key 31 inserted through a key insertion opening 63 into a key channel 23 in order to rotate a cylinder core 21 between a locked position and an unlocked position. The cylinder core 21 is part of a locking cylinder 13 (see Figure 1). Fig. 2A bis 4C ) is inserted into a bracket 15, which can be fixed, for example, in a door, a flap, or other installation environment of a locking mechanism, in order to lock or unlock the door, flap, or the like by means of the cylinder lock 11. For this purpose, on one side of the bracket 15 axially opposite the key insertion opening 63 with respect to the cylinder axis Z, a lock insert 67, secured by a retaining ring 65, extends from the bracket 15. This lock insert is rotationally fixed to the cylinder core 21 and can, for example, be designed to enable or lock the operation of a locking mechanism, such as a handle of a door or flap, depending on the rotational position of the cylinder core 21.

[0068] Like the exploded views of the Fig. 2A and 2BTo illustrate, the locking cylinder 13 can be inserted axially with respect to the cylinder axis Z through a receiving opening 48 into the holder 15. The locking cylinder 13 has a cylinder housing 19 in which the cylinder core 21 is rotatably mounted about the cylinder axis Z. The cylinder housing 19 comprises a substantially hollow cylindrical core receiving section 53 for receiving the cylinder core 21 and a flange section 55 projecting radially from the core receiving section 53 with respect to the cylinder axis Z. Furthermore, the locking cylinder 13 can have tumblers (not shown) which, in a locked position, prevent rotation of the cylinder core 21 about the cylinder axis Z. However, by inserting the key 31 into the keyway 23, these tumblers can be repositioned so that the cylinder core 21 can be rotated into an open position. Therefore, opening the cylinder lock 11 is only possible using the corresponding key 31.

[0069] The bracket 15 is designed to completely surround the lock cylinder 13 or the cylinder housing 17 and, in the embodiment shown here, has a bracket core receiving section 57 and a bracket flange section 59, reflecting the shape of the cylinder housing 19. The lock cylinder 13 can be held rotationally fixed in the bracket 15 by the flange section 55, which projects radially from the core receiving section 53, and the bracket flange section 57. Furthermore, the bracket 15 has a Fig. 1 The cap 61 shown covers the cylinder housing 19 in the direction of the key insertion opening 63. It should be noted that the bracket 15 can, in principle, have any shape and, in particular, can also be part of a larger installation environment for the lock cylinder 13.

[0070] Because the mounting bracket 15 completely surrounds the locking cylinder 13, the cylinder can only be removed axially through the receiving opening 48. Therefore, it is necessary to fix the locking cylinder 13 axially within the mounting bracket to secure it against unauthorized removal attempts. For this purpose, a locking element 17 is provided, which is axially fixed to the locking cylinder 13 or the cylinder housing 19. This locking element 17 has a circular arc-shaped connecting section 49, which is formed by an annular section 39 and can be connected to the cylinder housing 19 via an annular groove 41. As shown in Fig. 2A and 2BAs shown, the locking element 17 can optionally have an additional stabilizing element 37. The annular groove 41 is formed by a rear end section of the core receiving section 53, which is axially opposite to the cylinder axis Z with respect to the key insertion opening 63 and extends beyond the flange section 55 and has a reduced radial extent compared to the rest of the core receiving section 53.

[0071] Furthermore, the cylinder core 21 has a driver section 35 on a rear side axially opposite the key insertion opening 63, which is formed by a driver element 36 that is separate from the rest of the cylinder core 21 and which, in the mounted state of the cylinder lock 11, is rotationally fixed to the rest of the cylinder core 21 (see in particular also Fig. 3 The drive element 36 forms, on the one hand, a rear boundary of the annular groove 41 to axially hold the locking element 17, and on the other hand serves to transmit a rotation of the cylinder core 21 to the lock insert 67. The cylinder core 21 and the drive element 36 have corresponding fastening openings 71 to allow the drive element 36 and the cylinder core 21 to be screwed firmly together.

[0072] The locking element 17 has a blocking section 25 projecting laterally from the connecting section 49, which, in a blocking position B shown in the figures, projects laterally beyond the flange section 35 of the cylinder housing 19 and rests against a stop section 27 formed by the bracket 15 (see in particular Fig. 1 and 7 as well as Fig. 4C The mounting core section 57 has a lower blocking recess 50 through which the blocking section 25 of the locking element 17 projects towards the mounting flange section 59 and into a lateral mounting recess 51 formed on the mounting flange section 59. The boundary of this lateral mounting recess 51 formed by the mounting flange section 59 constitutes the stop section 27 against which the blocking section 25 rests in an axially effective manner. By holding the locking element 17 axially firmly in the annular groove 41 on the locking cylinder 13 and engaging behind the stop section 27 as described, the locking cylinder 13 can be reliably secured in the mounting 15, particularly against unauthorized removal or break-in attempts.

[0073] The locking element 17, or rather its blocking section 25, ensures that the locking cylinder 13, which is held in the holder 15, is reliably secured against unauthorized removal. However, to allow the authorized user to remove the locking cylinder 13 from the holder 15 and, for example, replace it with another locking cylinder that can be operated with a different key, the locking element 17 has a coupling section 29 that projects radially inwards from the connecting section 49 (see in particular...). Fig. 2A , 4A , 4C as well as 5A and 5B).

[0074] This coupling section 29 is arranged in the locked position of the locking cylinder 13 or its cylinder core 21 shown in the figures, in line with the keyway 23, and can be actuated from the outside, through the keyway 23, to establish a coupling engagement with the cylinder core 21 (cf. Fig. 4A and 4C ). By such coupling actuation of the coupling section 29, the coupling section 29 of the locking element 17 can be connected to the cylinder core 21 in a rotationally fixed manner, whereupon the blocking section 25 can be brought into a release position F by turning the cylinder core 21 using the associated key 31, which in Fig. 4C This is illustrated by an arrow indicating the movement of the blocking section 25 to reach the release position F. This movement of the blocking section 25 is approximately tangential to the cylinder axis Z. In the release position F of the blocking section 25, the locking cylinder 13 is released for removal from the holder 15, with the blocking section 25 being out of the axial alignment of the stop section 27 of the holder 15 (see figure). Fig. 2A and 7 ) is moved out and can be arranged in particular in line with the flange section 55 of the cylinder housing 19.

[0075] Due to this two-step process of moving the blocking section 25 into the release position F, the locking cylinder 13 can only be removed from the holder 15 by the authorized user, since the second step requires the assigned key 31 to turn the cylinder core 21. While the authorized user can thus release the locking cylinder 13 from the outside in the holder 15 by means of two extremely simple and quick steps, the locking cylinder 13 is reliably secured against unauthorized removal attempts by the locking element 17.

[0076] To connect the coupling section 29 to the cylinder core 21 in a rotationally fixed manner, a coupling actuation can be effected by means of an elongated tool (not shown) that can be guided through the keyway 23. The coupling section 29 can be moved away from the keyway 23 by the tool or subjected to a force directed away from the keyway 23 and thereby deformed in a stable manner, causing the coupling section 29 to engage in a coupling recess 33 formed on the drive element 36 (see figure). Fig. 2B and 4B) can be forced and brought into a coupling engagement with the coupling recess 33. As a result of such coupling actuation or force application to the coupling section 29, the coupling section 29 can be permanently deformed and thus permanently brought into a rotationally fixed coupling with the drive element 36 or the cylinder core 21. For example, the coupling section 29 can be inelastically bent by means of a tool guided through the keyway 23 or can snap shut after overcoming resistance in order to come into a stable, i.e., self-maintaining, engagement with the coupling recess 33.

[0077] How in particular Fig. 4C As illustrated, a tool guided through the keyway 23 can be directly directed onto and brought into contact with the coupling section 29 because the coupling section 29 is aligned with the keyway 23 when the cylinder core 21 is in the locked position. Coupling actuation of the coupling section 29 can thus be carried out easily and without any knowledge of the cylinder lock 11's construction, so that even users unfamiliar with this construction can easily perform the steps for removing the lock cylinder 13 from the holder 15.

[0078] As an alternative to coupling actuation by means of a rod-like tool and subsequent rotation of the cylinder core 21 by means of the associated key 31, a second associated key 32 can also be provided, which can be specifically provided for removing the locking cylinder 13 from the holder 15. How Fig. 8B shows that the second assigned key has a value of 32 compared to the one in Fig. 8A The first assigned key 31, as illustrated above, has an actuating extension 34, so that the second assigned key 32 is axially longer than the first assigned key 31. Both the first assigned key 31 and the second assigned key 32 are designed to engage the tumblers (e.g., pin tumblers) of the locking cylinder 13 in order to rotate the cylinder core 21.

[0079] The length of the second associated key 32 is selected by the actuating extension 34 such that the coupling section 29 can be actuated by inserting the second associated key 32 into the key channel 23, thus coupling the coupling section 29 to the cylinder core 21 in a rotationally fixed manner. When the second associated key 32 is inserted, a force directed away from the key channel 23 can be transmitted to the coupling section 29 via the actuating extension 34, so that the coupling section 29 can be forced into the coupling recess 33. The locking section 25 can then be moved directly into the release position F by rotating the second associated key 32 inserted into the key channel 23. The actuating extension 34 can be positioned in the coupling recess 33 while the cylinder core 21 is being rotated.

[0080] The first assigned key 31, however, has a length chosen such that the coupling section 29 cannot be actuated by the first assigned key 31. While the second assigned key 32 may therefore be specifically intended for the convenient removal of the locking cylinder 13 from the holder 15, the first assigned key 31 can be used to open or lock the cylinder lock 11 without the coupling section 29 being connected to the cylinder core 21 during such use of the cylinder lock 11.

[0081] However, in order to prevent unintentional rotation of the coupling section 29 or the locking element 17 before coupling actuation of the coupling section 29 during opening or locking operations of the cylinder lock 11, the undeformed coupling section 29 is arranged in a rotational recess 69 of the driver element 36 (see Fig. 2B and 4BThe coupling section 29 can thus extend radially inwards from the connecting section 49 between the keyway 23 and the driver section 35, whereby the cylinder core 21 and the driver element 36 can be rotated relative to the coupling section 29 and thus to the locking element 17 for the operation of the cylinder lock 11.

[0082] Furthermore, the locking element 17 has a support section 45 projecting laterally outwards from the connecting section 49, perpendicular to the cylinder axis Z, with which the locking element 17 is supported against rotation relative to the cylinder housing 19 or the bracket 15 (cf. Fig. 5A and 5B ). As particularly evident from Fig. 6 As can be seen, the support section 45 rests against an inner side 51 of the mounting flange section 59, which is located opposite the lateral locking recess 51, through which the locking section 25 protrudes in the locking position B.

[0083] In addition to preventing the locking element 17 from rotating, the support section 45 also serves as a counter-bearing to pre-tension the blocking section 25 in the direction of the blocking position B. For this purpose, the locking element 17 is designed as a spring 43, and the connecting section 49 can be slightly pre-tensioned outwards in diameter when placed on the annular groove 41 of the cylinder housing 19. In particular, the connecting section 49 can be designed to be elastic for this purpose. During assembly or when inserting the lock cylinder 13 into the holder 15, the locking element 17 can initially be compressed against the pre-tension, whereby the blocking section 25 and the support section 45 bear against the inner walls of the holder 15 during the insertion of the lock cylinder 13 into the holder and can thus keep the spring 43 under tension.When the lock cylinder 13 is fully inserted, the spring 43 can expand, with the blocking section 25 protruding through the lateral blocking recess 51, while the support section 45 holds the locking part 17 on the inside 47 of the holder 15 opposite the blocking recess 51.

[0084] If the coupling section 29 is then coupled to the cylinder core 21 and rotated along with it, the extended spring 43 can be compressed inwards again against the preload, so that the locking section 25 can be moved into the release position F. The connecting section 49 can be arranged with clearance to the annular groove 41 when the locking section 25 is in the locking position B, in order to allow the spring 43 to be compressed inwards during movement of the locking section 25 into the release position F. This allows the locking section 25 to be aligned with the flange section 55 in the release position F, so that the locking cylinder 13 can be removed from the holder 15. In particular, the locking section 25 can contact the support section 45 in the release position F.

[0085] The cylinder lock 11 described here as an example thus enables the secure and reliable fixing of the locking cylinder 13 in the holder 15 by means of the blocking section 25 of the locking element 17, in order to counteract break-in attempts by removing the locking cylinder 13 from the holder 15. At the same time, however, the authorized user can easily and quickly remove the locking cylinder 13 from the holder 15 and, for example, replace it. For example, after removing the locking cylinder 13, the user can insert another locking cylinder into the holder 15, which can be operated by a different key 31, but not by the key 31 assigned to the locking cylinder 21 originally located in the holder 15.In particular, the security of objects accessible to changing users can be increased by such a simple and quick replacement of the locking cylinder 13. Bezugszeichenliste

[0086] 11 Cylinder lock 13 Lock cylinder 15 Bracket 17 Security element 19 Cylinder housing 21 Cylinder core 23 Keyway 25 Blocking section 27 Stop section 29 Coupling section 31 First assigned key 32 Second assigned key 33 Coupling recess 35 Drive section 36 Drive element 37 Stabilizing element 39 Ring section 41 Ring groove 43 Spring 45 Support section 47 Inside of bracket 48 Bracket receiving opening 49 Connecting section 50 Lower blocking recess 51 Side blocking recess 53 Core receiving section 55 Flange section 57 Bracket core receiving section 59 Bracket flange section 61 Cap 63 Key insertion opening 65 Retaining ring 67 Lock insert 69 Rotating recess 71 Mounting opening B Blocking position F Release position ZZ Cylinder axis

Claims

1. A cylinder lock (11), comprising a lock cylinder (13); a holder (15) for receiving the lock cylinder (13); and a securing element (17), wherein the lock cylinder (13) has a cylinder housing (19) and a cylinder core (21) which is rotatable about a cylinder axis (Z) in the cylinder housing (19) and which has a keyway (23); wherein the securing element (17) is axially fixedly held at the lock cylinder (13) and has a blocking section (25) which, in a blocking position (B), contacts an abutment section (27) of the holder (15) to secure the lock cylinder (13) against a removal from the holder (15); wherein the securing element (17) further has a coupling section (29) which is accessible through the keyway (23) for a coupling actuation and which is rotationally fixedly couplable to the cylinder core (21) by the coupling actuation; and wherein the blocking section (25) of the securing element (17) is displaceable from the blocking position (B) into a release position (F), in which the lock cylinder (13) is released for a removal from the holder (15), by turning the cylinder core (21) by means of an associated key (31) when the coupling section (29) of the securing element (17) is rotationally fixedly coupled to the cylinder core (21), characterized in that the coupling section (29) of the securing element (17) is configured to be moved away from the keyway (23) by the coupling actuation.

2. A cylinder lock (11) in accordance with claim 1, wherein the coupling section (29) of the securing element (17) is arranged in alignment with the keyway (23) of the cylinder core (21).

3. A cylinder lock (11) in accordance with claim 1 or claim 2, wherein the coupling section (29) of the securing element (17) is configured to be rotationally fixedly coupled to the cylinder core (21) in a stable manner due to the coupling actuation, in particular by an inelastic or bistable deformation.

4. A cylinder lock (11) in accordance with any one of the preceding claims, wherein the cylinder core (21) has a coupling recess (33), wherein the coupling section (29) of the securing element (17) is configured to be brought into a coupling engagement with the coupling recess (33) of the cylinder core (21) by the coupling actuation.

5. A cylinder lock (11) in accordance with any one of the preceding claims, wherein the cylinder core (21) has an entrainer section (35), wherein the coupling section (29) of the securing element (17) is rotationally fixedly couplable to the entrainer section (35) of the cylinder core (21).

6. A cylinder lock (11) in accordance with any one of the preceding claims, wherein the securing element (17) is axially fixedly held in a ring groove (41) of the lock cylinder (13).

7. A cylinder lock (11) in accordance with any one of the preceding claims, wherein the blocking section (25) of the securing element (17) is movable relative to the cylinder housing (19) and / or relative to the holder (15); and / or wherein the blocking section (25) of the securing element (17) is preloaded in the direction of the blocking position (B); and / or wherein the securing element (17) has a support section (45) with which the securing element (17) is supported against a rotation relative to the cylinder housing (19) and / or relative to the holder (15).

8. A cylinder lock (11) in accordance with any one of the preceding claims, wherein the securing element (17) has an arcuate connection section (49), wherein: the arcuate connection section (49) at least partly surrounds the cylinder housing (19); and / or the arcuate connection section (49) is elastic; and / or the blocking section (25) of the securing element (17) projects laterally outwardly with respect to the arcuate shape of the connection section (49); and / or the coupling section (29) of the securing element (17) projects radially inwardly from the arcuate connection section (49).

9. A cylinder lock (11) in accordance with any one of the preceding claims, wherein the holder (15) has a lateral blocking recess (51) into which the blocking section (25) of the securing element (17) projects; and / or wherein the lock cylinder (13) extends along the cylinder axis (Z), and wherein the cylinder housing (19) comprises a core reception section (53) for receiving the cylinder core (21); and a flange section (55) projecting radially away from the core reception section (53) with respect to the cylinder axis (Z), wherein the holder (15) comprises a holder core reception section (57) and a holder flange section (59).

10. A cylinder lock (11) in accordance with any one of the preceding claims, comprising a first associated key (31) and a second associated key (32) which are both configured to turn the cylinder core (21), wherein the length of the first key (31) is selected such that the coupling section (29) of the securing element (17) is not actuable through a complete introduction of the first key (31) into the keyway (23); and wherein the length of the second associated key (32) is selected such that the coupling section (29) of the securing element (17) is actuable through a complete introduction of the second associated key (32) into the keyway (23) in order to rotationally fixedly couple the coupling section (29) to the cylinder core (21).

11. A cylinder lock (11) in accordance with any one of the preceding claims, wherein the securing element (17) comprises an arcuate connection section (49) for axially fixedly connecting the securing element (17) to the lock cylinder, wherein the blocking section (25) for blocking a relative axial movement between the lock cylinder (13) and the holder (15) projects away laterally outwardly with respect to the arcuate shape of the connection section (49); and wherein the coupling section (29) projects radially inwardly from the connection section (49).

12. A cylinder lock (11) in accordance with claim 11, wherein the coupling section (29) is axially inelastically deformable or deformable in a bistable manner.

13. A cylinder lock (11) in accordance with claim 11 or claim 12, wherein the securing element (17) has a support section (45) projecting outwardly away from the connection section (49) substantially perpendicular to the cylinder axis (Z).

14. A method of removing a lock cylinder (13) of a cylinder lock (11) from a holder (15), wherein the lock cylinder (13) has a cylinder housing (19) and a cylinder core (21) which is rotatable about a cylinder axis (Z) in the cylinder housing (19) and which has a keyway (23); wherein the lock cylinder (13) is received in the holder (15) and is secured against a removal from the holder (15) by a securing element (17) axially fixedly held at the lock cylinder (13), wherein the securing element (17) has a blocking section (25) which, in a blocking position (B), contacts an abutment section (27) of the holder (15); wherein the cylinder lock (11) is in particular configured in accordance with any one of the claims 1 to 13; wherein - a coupling section (29) of the securing element (17) is rotationally fixedly coupled to the cylinder core (21) by a coupling actuation through the keyway (23); - the cylinder core (21) is then turned by means of an associated key (31) and the blocking section (25) is hereby brought into a release position (F); and - the cylinder core (21) is removed from the holder (15), characterized in that the coupling section (29) of the securing element (17) is moved away from the keyway (23) by the coupling actuation.

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